From 979bbf8ce30cf34cb17a1a3eb632f9eadff349bb Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Mon, 1 Jul 2024 16:16:52 +0200 Subject: [PATCH 01/50] adds support to handle out of order events arriving in the RSP Engine. --- .gitignore | 2 + dist/config/log_config.json | 8 ++ dist/operators/r2r.js | 21 +++++- dist/operators/r2r.test.js | 21 ++++++ dist/operators/s2r.d.ts | 10 ++- dist/operators/s2r.js | 66 +++++++++++----- dist/operators/s2r.test.js | 45 +++++++++-- dist/rsp.d.ts | 1 + dist/rsp.js | 34 ++++++++- dist/util/Logger.d.ts | 38 ++++++++++ dist/util/Logger.js | 123 ++++++++++++++++++++++++++++++ package-lock.json | 4 +- package.json | 2 +- src/operators/s2r.test.ts | 113 ++++++++++++++++++++++------ src/operators/s2r.ts | 146 +++++++++++++++++++++++------------- src/rsp.ts | 2 +- 16 files changed, 531 insertions(+), 105 deletions(-) create mode 100644 dist/config/log_config.json create mode 100644 dist/util/Logger.d.ts create mode 100644 dist/util/Logger.js diff --git a/.gitignore b/.gitignore index 898d504..cc6c774 100644 --- a/.gitignore +++ b/.gitignore @@ -104,3 +104,5 @@ typings/ # TernJS port file .tern-port + +# Removing the build directory diff --git a/dist/config/log_config.json b/dist/config/log_config.json new file mode 100644 index 0000000..8546489 --- /dev/null +++ b/dist/config/log_config.json @@ -0,0 +1,8 @@ +{ + "log_level": "INFO", + "classes_to_log": [ + "RDFStream", + "RSPEngine" + ], + "destination": "FILE" +} diff --git a/dist/operators/r2r.js b/dist/operators/r2r.js index 3c97c6f..f9bbb7e 100644 --- a/dist/operators/r2r.js +++ b/dist/operators/r2r.js @@ -10,9 +10,9 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge }; Object.defineProperty(exports, "__esModule", { value: true }); exports.R2ROperator = void 0; +const rdf_data_factory_1 = require("rdf-data-factory"); const N3 = require('n3'); -const { DataFactory } = N3; -const { namedNode, literal, defaultGraph, quad } = DataFactory; +const DF = new rdf_data_factory_1.DataFactory(); class R2ROperator { constructor(query) { this.query = query; @@ -34,6 +34,23 @@ class R2ROperator { const myEngine = new QueryEngine(); return yield myEngine.queryBindings(this.query, { sources: [store], + extensionFunctions: { + 'http://extension.org/functions#sqrt'(args) { + const arg = args[0]; + if (arg.termType === 'Literal') { + return DF.literal(Math.sqrt(Number(arg.value)).toString()); + } + }, + 'http://extension.org/functions#pow'(args) { + const arg1 = args[0]; + if (arg1.termType === 'Literal') { + const arg2 = args[1]; + if (arg2.termType === 'Literal') { + return DF.literal(Math.pow(Number(arg1.value), Number(arg2.value)).toString()); + } + } + } + }, }); }); } diff --git a/dist/operators/r2r.test.js b/dist/operators/r2r.test.js index 85833f0..240b033 100644 --- a/dist/operators/r2r.test.js +++ b/dist/operators/r2r.test.js @@ -34,3 +34,24 @@ test('test_query_engine', () => __awaiter(void 0, void 0, void 0, function* () { expect(resuults.length).toBe(2); }); })); +test('test_query_engine_with_extension_functions', () => __awaiter(void 0, void 0, void 0, function* () { + let r2r = new r2r_1.R2ROperator(` + PREFIX extension: + SELECT (extension:sqrt(?o) as ?sqrt) (extension:pow(?o,2) as ?pow) WHERE { ?s ?p ?o }`); + const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), literal('4'), defaultGraph()); + const quad2 = quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), literal('9'), defaultGraph()); + let quadSet = new Set(); + quadSet.add(quad1); + quadSet.add(quad2); + let container = new s2r_1.QuadContainer(quadSet, 0); + const bindingsStream = yield r2r.execute(container); + let results = new Array(); + // @ts-ignore + bindingsStream.on('data', (binding) => { + results.push(binding); + }); + bindingsStream.on('end', () => { + // The data-listener will not be called anymore once we get here. + expect(results.length).toBe(2); + }); +})); diff --git a/dist/operators/s2r.d.ts b/dist/operators/s2r.d.ts index 0288f46..ccb9dfb 100644 --- a/dist/operators/s2r.d.ts +++ b/dist/operators/s2r.d.ts @@ -1,4 +1,5 @@ /// +/// import { EventEmitter } from "events"; import { Quad } from 'n3'; export declare enum ReportStrategy { @@ -36,11 +37,18 @@ export declare class CSPARQLWindow { report: ReportStrategy; tick: Tick; emitter: EventEmitter; + interval_id: NodeJS.Timeout; name: string; - constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number); + private late_buffer; + private max_delay; + constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number); getContent(timestamp: number): QuadContainer | undefined; add(e: Quad, timestamp: number): void; + process_event(e: Quad, t_e: number, toEvict: Set): void; + emit_on_trigger(t_e: number): void; compute_report(w: WindowInstance, content: QuadContainer, timestamp: number): boolean; scope(t_e: number): void; subscribe(output: 'RStream' | 'IStream' | 'DStream', call_back: (data: QuadContainer) => void): void; + process_late_elements(): void; + set_current_time(t: number): void; } diff --git a/dist/operators/s2r.js b/dist/operators/s2r.js index 05f8df3..f997658 100644 --- a/dist/operators/s2r.js +++ b/dist/operators/s2r.js @@ -1,6 +1,7 @@ "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.CSPARQLWindow = exports.QuadContainer = exports.WindowInstance = exports.Tick = exports.ReportStrategy = void 0; +const events_1 = require("events"); var ReportStrategy; (function (ReportStrategy) { ReportStrategy[ReportStrategy["NonEmptyContent"] = 0] = "NonEmptyContent"; @@ -45,7 +46,7 @@ class QuadContainer { } exports.QuadContainer = QuadContainer; class CSPARQLWindow { - constructor(name, width, slide, report, tick, start_time) { + constructor(name, width, slide, report, tick, start_time, max_delay) { this.name = name; this.width = width; this.slide = slide; @@ -54,8 +55,10 @@ class CSPARQLWindow { this.time = start_time; this.t0 = start_time; this.active_windows = new Map(); - let EventEmitter = require('events').EventEmitter; - this.emitter = new EventEmitter(); + this.emitter = new events_1.EventEmitter(); + this.max_delay = max_delay; + this.late_buffer = new Map(); + this.interval_id = setInterval(() => { this.process_late_elements(); }, this.slide); } getContent(timestamp) { let max_window = null; @@ -76,31 +79,50 @@ class CSPARQLWindow { } } add(e, timestamp) { + var _a; console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); let toEvict = new Set(); let t_e = timestamp; if (this.time > t_e) { - console.error("OUT OF ORDER NOT HANDLED"); + if (this.time - t_e > this.max_delay) { + console.error("Late element [" + e + "] with timestamp [" + t_e + "] is out of the allowed delay [" + this.max_delay + "]"); + return; + } + else { + console.warn("Late element [" + e + "] with timestamp [" + t_e + "] is being buffered for out of order processing"); + if (!this.late_buffer.has(t_e)) { + this.late_buffer.set(t_e, new Set()); + } + (_a = this.late_buffer.get(t_e)) === null || _a === void 0 ? void 0 : _a.add(e); + return; + } } + this.process_event(e, t_e, toEvict); + for (let w of toEvict) { + console.debug("Evicting [" + w.open + "," + w.close + ")"); + this.active_windows.delete(w); + } + } + process_event(e, t_e, toEvict) { this.scope(t_e); for (let w of this.active_windows.keys()) { - console.debug("Processing Window " + this.name + " [" + w.open + "," + w.close + ") for element (" + e + "," + timestamp + ")"); if (w.open <= t_e && t_e < w.close) { - console.debug("Adding element [" + e + "] to Window [" + w.open + "," + w.close + ")"); let temp_window = this.active_windows.get(w); if (temp_window) { - temp_window.add(e, timestamp); + temp_window.add(e, t_e); } } else if (t_e > w.close) { - console.debug("Scheduling for Eviction [" + w.open + "," + w.close + ")"); toEvict.add(w); } } + this.emit_on_trigger(t_e); + } + emit_on_trigger(t_e) { let max_window = null; let max_time = 0; this.active_windows.forEach((value, window) => { - if (this.compute_report(window, value, timestamp)) { + if (this.compute_report(window, value, t_e)) { if (window.close > max_time) { max_time = window.close; max_window = window; @@ -109,18 +131,14 @@ class CSPARQLWindow { }); if (max_window) { if (this.tick == Tick.TimeDriven) { - if (timestamp > this.time) { - this.time = timestamp; + if (t_e > this.time) { + this.time = t_e; this.emitter.emit('RStream', this.active_windows.get(max_window)); // @ts-ignore console.log("Window [" + max_window.open + "," + max_window.close + ") triggers. Content: " + this.active_windows.get(max_window)); } } } - for (let w of toEvict) { - console.debug("Evicting [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } } compute_report(w, content, timestamp) { if (this.report == ReportStrategy.OnWindowClose) { @@ -131,9 +149,7 @@ class CSPARQLWindow { scope(t_e) { let c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; let o_i = c_sup - this.width; - console.debug("Calculating the Windows to Open. First one opens at [" + o_i + "] and closes at [" + c_sup + "]"); do { - console.debug("Computing Window [" + o_i + "," + (o_i + this.width) + ") if absent"); computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); o_i += this.slide; } while (o_i <= t_e); @@ -141,6 +157,22 @@ class CSPARQLWindow { subscribe(output, call_back) { this.emitter.on(output, call_back); } + process_late_elements() { + this.late_buffer.forEach((elements, timestamp) => { + elements.forEach((element) => { + let to_evict = new Set(); + this.process_event(element, timestamp, to_evict); + for (let w of to_evict) { + console.debug("Evicting [" + w.open + "," + w.close + ")"); + this.active_windows.delete(w); + } + }); + }); + this.late_buffer.clear(); + } + set_current_time(t) { + this.time = t; + } } exports.CSPARQLWindow = CSPARQLWindow; function computeWindowIfAbsent(map, key, mappingFunction) { diff --git a/dist/operators/s2r.test.js b/dist/operators/s2r.test.js index c2f6655..67b2614 100644 --- a/dist/operators/s2r.test.js +++ b/dist/operators/s2r.test.js @@ -23,11 +23,11 @@ test('create_graph_container', () => { test('add_to_window', () => { const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); const quad2 = quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0); + let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); csparqlWindow.add(quad, 0); }); test('test_scope', () => { - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0); + let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); csparqlWindow.scope(4); let num_active_windows = csparqlWindow.active_windows.size; /** @@ -42,14 +42,14 @@ test('test_scope', () => { expect(num_active_windows).toBe(6); }); test('test_evictions', () => { - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0); + let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); generate_data(10, csparqlWindow); expect(csparqlWindow.active_windows.size).toBe(5); }); test('test_stream_consumer', () => { let recevied_data = new Array(); let received_elementes = new Array; - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0); + let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); // register window consumer csparqlWindow.subscribe('RStream', function (data) { console.log('Foo raised, Args:', data); @@ -65,7 +65,7 @@ test('test_stream_consumer', () => { test('test_content_get', () => { let recevied_data = new Array(); let received_elementes = new Array; - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0); + let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); // generate some data generate_data(10, csparqlWindow); let content = csparqlWindow.getContent(10); @@ -76,3 +76,38 @@ test('test_content_get', () => { let undefinedContent = csparqlWindow.getContent(20); expect(undefinedContent).toBeUndefined(); }); +describe('out_of_order_processing', () => { +}); +test('test_the_max_delay_function', () => { + let window; + const width = 10; + const slide = 5; + const max_delay = 50; + const start_time = 0; + window = new s2r_1.CSPARQLWindow('testWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, start_time, max_delay); + window.subscribe('RStream', (data) => { + console.log(`RStream output: ${data}`); + }); + console.log(window); + window.set_current_time(100); + window.add(quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 18); + window.add(quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 5); + expect(window.active_windows.size).toBe(0); +}); +test('out_of_order_processing', () => { + let window; + const width = 10; + const slide = 5; + const max_delay = 10; + const start_time = 0; + window = new s2r_1.CSPARQLWindow('testWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, start_time, max_delay); + window.subscribe('RStream', (data) => { + console.log(`RStream output: ${data}`); + }); + window.set_current_time(20); + window.add(quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 28); + window.add(quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 15); + window.add(quad(namedNode('https://rsp.js/test_subject_2'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 14); + expect(window.active_windows.size).toBe(2); + clearInterval(window.interval_id); +}); diff --git a/dist/rsp.d.ts b/dist/rsp.d.ts index dba5614..9a4d00c 100644 --- a/dist/rsp.d.ts +++ b/dist/rsp.d.ts @@ -17,6 +17,7 @@ export declare class RSPEngine { windows: Array; streams: Map; private r2r; + private logger; constructor(query: string); register(): any; getStream(stream_name: string): RDFStream | undefined; diff --git a/dist/rsp.js b/dist/rsp.js index ee63928..9247c5a 100644 --- a/dist/rsp.js +++ b/dist/rsp.js @@ -1,4 +1,27 @@ "use strict"; +var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { + if (k2 === undefined) k2 = k; + var desc = Object.getOwnPropertyDescriptor(m, k); + if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { + desc = { enumerable: true, get: function() { return m[k]; } }; + } + Object.defineProperty(o, k2, desc); +}) : (function(o, m, k, k2) { + if (k2 === undefined) k2 = k; + o[k2] = m[k]; +})); +var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { + Object.defineProperty(o, "default", { enumerable: true, value: v }); +}) : function(o, v) { + o["default"] = v; +}); +var __importStar = (this && this.__importStar) || function (mod) { + if (mod && mod.__esModule) return mod; + var result = {}; + if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); + __setModuleDefault(result, mod); + return result; +}; var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } return new (P || (P = Promise))(function (resolve, reject) { @@ -12,6 +35,8 @@ Object.defineProperty(exports, "__esModule", { value: true }); exports.RSPEngine = exports.RDFStream = void 0; const s2r_1 = require("./operators/s2r"); const r2r_1 = require("./operators/r2r"); +const LOG_CONFIG = __importStar(require("./config/log_config.json")); +const Logger_1 = require("./util/Logger"); const N3 = require('n3'); const { DataFactory } = N3; const { namedNode, literal, defaultGraph, quad } = DataFactory; @@ -37,10 +62,12 @@ class RSPEngine { constructor(query) { this.windows = new Array(); this.streams = new Map(); + const logLevel = Logger_1.LogLevel[LOG_CONFIG.log_level]; + this.logger = new Logger_1.Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination); let parser = new rspql_1.RSPQLParser(); let parsed_query = parser.parse(query); parsed_query.s2r.forEach((window) => { - let windowImpl = new s2r_1.CSPARQLWindow(window.window_name, window.width, window.slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0); + let windowImpl = new s2r_1.CSPARQLWindow(window.window_name, window.width, window.slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); this.windows.push(windowImpl); let stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); @@ -52,7 +79,7 @@ class RSPEngine { let emitter = new EventEmitter(); this.windows.forEach((window) => { window.subscribe("RStream", (data) => __awaiter(this, void 0, void 0, function* () { - console.log('Received window content', data); + this.logger.info(`Received window content ${data} for time ${data.last_time_changed()}`, `RSPEngine`); // iterate over all the windows for (let windowIt of this.windows) { // filter out the current triggering one @@ -64,6 +91,7 @@ class RSPEngine { } } } + this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_stamp_changed}`, `RSPEngine`); let bindingsStream = yield this.r2r.execute(data); bindingsStream.on('data', (binding) => { let object_with_timestamp = { @@ -75,7 +103,7 @@ class RSPEngine { emitter.emit("RStream", object_with_timestamp); }); bindingsStream.on('end', () => { - console.log("Ended stream"); + this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()}`, `RSPEngine`); }); yield bindingsStream; })); diff --git a/dist/util/Logger.d.ts b/dist/util/Logger.d.ts new file mode 100644 index 0000000..9b1dafd --- /dev/null +++ b/dist/util/Logger.d.ts @@ -0,0 +1,38 @@ +export declare enum LogLevel { + TRACE = 0, + DEBUG = 1, + INFO = 2, + CONFIG = 3, + WARN = 4, + ERROR = 5, + FATAL = 6, + SEVERE = 7, + AUDIT = 8, + STATS = 9 +} +export declare enum LogDestination { + CONSOLE = 0, + FILE = 1 +} +export declare class Logger { + private log_level; + private loggable_classes; + private log_destination; + constructor(logLevel: LogLevel, loggableClasses: string[], logDestination: any); + setLogLevel(logLevel: LogLevel): void; + setLoggableClasses(loggableClasses: string[]): void; + setLogDestination(logDestination: LogDestination): void; + log(level: LogLevel, message: string, className: string): void; + trace(message: string, className: string): void; + debug(message: string, className: string): void; + info(message: string, className: string): void; + config(message: string, className: string): void; + warn(message: string, className: string): void; + error(message: string, className: string): void; + fatal(message: string, className: string): void; + severe(message: string, className: string): void; + audit(message: string, className: string): void; + stats(message: string, className: string): void; + static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination): Logger; + static getLoggerWithDefaults(): Logger; +} diff --git a/dist/util/Logger.js b/dist/util/Logger.js new file mode 100644 index 0000000..4340674 --- /dev/null +++ b/dist/util/Logger.js @@ -0,0 +1,123 @@ +"use strict"; +var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { + if (k2 === undefined) k2 = k; + var desc = Object.getOwnPropertyDescriptor(m, k); + if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { + desc = { enumerable: true, get: function() { return m[k]; } }; + } + Object.defineProperty(o, k2, desc); +}) : (function(o, m, k, k2) { + if (k2 === undefined) k2 = k; + o[k2] = m[k]; +})); +var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { + Object.defineProperty(o, "default", { enumerable: true, value: v }); +}) : function(o, v) { + o["default"] = v; +}); +var __importStar = (this && this.__importStar) || function (mod) { + if (mod && mod.__esModule) return mod; + var result = {}; + if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); + __setModuleDefault(result, mod); + return result; +}; +Object.defineProperty(exports, "__esModule", { value: true }); +exports.Logger = exports.LogDestination = exports.LogLevel = void 0; +const fs = __importStar(require("fs")); +var LogLevel; +(function (LogLevel) { + LogLevel[LogLevel["TRACE"] = 0] = "TRACE"; + LogLevel[LogLevel["DEBUG"] = 1] = "DEBUG"; + LogLevel[LogLevel["INFO"] = 2] = "INFO"; + LogLevel[LogLevel["CONFIG"] = 3] = "CONFIG"; + LogLevel[LogLevel["WARN"] = 4] = "WARN"; + LogLevel[LogLevel["ERROR"] = 5] = "ERROR"; + LogLevel[LogLevel["FATAL"] = 6] = "FATAL"; + LogLevel[LogLevel["SEVERE"] = 7] = "SEVERE"; + LogLevel[LogLevel["AUDIT"] = 8] = "AUDIT"; + LogLevel[LogLevel["STATS"] = 9] = "STATS"; +})(LogLevel = exports.LogLevel || (exports.LogLevel = {})); +var LogDestination; +(function (LogDestination) { + LogDestination[LogDestination["CONSOLE"] = 0] = "CONSOLE"; + LogDestination[LogDestination["FILE"] = 1] = "FILE"; +})(LogDestination = exports.LogDestination || (exports.LogDestination = {})); +class Logger { + constructor(logLevel, loggableClasses, logDestination) { + this.log_level = logLevel; + this.loggable_classes = loggableClasses; + this.log_destination = logDestination; + console.log(`Logger initialized with log level ${this.log_level}, loggable classes ${this.loggable_classes}, and log destination ${this.log_destination}`); + } + setLogLevel(logLevel) { + this.log_level = logLevel; + } + setLoggableClasses(loggableClasses) { + this.loggable_classes = loggableClasses; + } + setLogDestination(logDestination) { + this.log_destination = logDestination; + } + log(level, message, className) { + console.log(`Logging level: ${level}`); + console.log(`this.log_level: ${this.log_level}`); + if (level >= this.log_level && this.loggable_classes.includes(className)) { + const logPrefix = `[${LogLevel[level]}] [${className}]`; + const logMessage = `${Date.now()} ${logPrefix} ${message}`; + console.log(`Logging destination: ${this.log_destination}`); + switch (this.log_destination) { + case 'CONSOLE': + console.log(logMessage); + break; + case 'FILE': + try { + fs.appendFileSync(`./logs/${className}.log`, `${logMessage}\n`); + } + catch (error) { + console.error(`Error writing to file: ${error}`); + } + break; + default: + console.log(`Invalid log destination: ${this.log_destination}`); + } + } + } + trace(message, className) { + this.log(LogLevel.TRACE, message, className); + } + debug(message, className) { + this.log(LogLevel.DEBUG, message, className); + } + info(message, className) { + this.log(LogLevel.INFO, message, className); + } + config(message, className) { + this.log(LogLevel.CONFIG, message, className); + } + warn(message, className) { + this.log(LogLevel.WARN, message, className); + } + error(message, className) { + this.log(LogLevel.ERROR, message, className); + } + fatal(message, className) { + this.log(LogLevel.FATAL, message, className); + } + severe(message, className) { + this.log(LogLevel.SEVERE, message, className); + } + audit(message, className) { + this.log(LogLevel.AUDIT, message, className); + } + stats(message, className) { + this.log(LogLevel.STATS, message, className); + } + static getLogger(logLevel, loggableClasses, logDestination) { + return new Logger(logLevel, loggableClasses, logDestination); + } + static getLoggerWithDefaults() { + return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); + } +} +exports.Logger = Logger; diff --git a/package-lock.json b/package-lock.json index 9022648..5360a35 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,12 +1,12 @@ { "name": "rsp-js", - "version": "1.1.1", + "version": "1.2.1", "lockfileVersion": 2, "requires": true, "packages": { "": { "name": "rsp-js", - "version": "1.1.1", + "version": "1.2.1", "license": "MIT", "dependencies": { "@comunica/query-sparql": "^2.5.2", diff --git a/package.json b/package.json index 83db715..e5ae29b 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "1.2.1", + "version": "1.4.0", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index 72c2926..c1d651d 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -1,11 +1,11 @@ -import {CSPARQLWindow, QuadContainer, ReportStrategy, Tick, WindowInstance} from './s2r'; +import { CSPARQLWindow, QuadContainer, ReportStrategy, Tick, WindowInstance } from './s2r'; const N3 = require('n3'); const { DataFactory } = N3; const { namedNode, literal, defaultGraph, quad } = DataFactory; // @ts-ignore -import {Quad} from 'n3'; +import { Quad } from 'n3'; function generate_data(num_events: number, csparqlWindow: CSPARQLWindow) { for (let i = 0; i < num_events; i++) { const stream_element = quad( @@ -44,25 +44,25 @@ test('create_graph_container', () => { test('add_to_window', () => { const quad1 = quad( - namedNode('https://rsp.js/test_subject_0'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), ); const quad2 = quad( - namedNode('https://rsp.js/test_subject_1'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), + namedNode('https://rsp.js/test_subject_1'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), ); - let csparqlWindow = new CSPARQLWindow(":window1",10,2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0); + let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); - csparqlWindow.add(quad,0); + csparqlWindow.add(quad, 0); }); test('test_scope', () => { - let csparqlWindow = new CSPARQLWindow(":window1",10,2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0); + let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); csparqlWindow.scope(4); let num_active_windows = csparqlWindow.active_windows.size; @@ -79,7 +79,7 @@ test('test_scope', () => { expect(num_active_windows).toBe(6); }); test('test_evictions', () => { - let csparqlWindow = new CSPARQLWindow(":window1",10,2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0); + let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); generate_data(10, csparqlWindow); @@ -87,11 +87,11 @@ test('test_evictions', () => { }); test('test_stream_consumer', () => { - let recevied_data = new Array(); - let received_elementes = new Array; - let csparqlWindow = new CSPARQLWindow(":window1",10,2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0); + let recevied_data = new Array(); + let received_elementes = new Array; + let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); // register window consumer - csparqlWindow.subscribe('RStream',function (data: QuadContainer) { + csparqlWindow.subscribe('RStream', function (data: QuadContainer) { console.log('Foo raised, Args:', data); console.log('dat size', data.elements.size); recevied_data.push(data); @@ -101,23 +101,94 @@ test('test_stream_consumer', () => { generate_data(10, csparqlWindow); expect(recevied_data.length).toBe(4); - expect(received_elementes.length).toBe(2+4+6+8); + expect(received_elementes.length).toBe(2 + 4 + 6 + 8); }); test('test_content_get', () => { let recevied_data = new Array(); let received_elementes = new Array; - let csparqlWindow = new CSPARQLWindow(":window1",10,2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0); + let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); // generate some data generate_data(10, csparqlWindow); let content = csparqlWindow.getContent(10); expect(content).toBeDefined(); - if(content) { + if (content) { expect(content.elements.size).toBe(10); } let undefinedContent = csparqlWindow.getContent(20); expect(undefinedContent).toBeUndefined(); }); + +describe('out_of_order_processing', () => { + +}); + + +test('test_the_max_delay_function', () => { + let window: CSPARQLWindow; + const width = 10; + const slide = 5; + const max_delay = 50; + const start_time = 0; + window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, start_time, max_delay); + + window.subscribe('RStream', (data: any) => { + console.log(`RStream output: ${data}`); + }); + + console.log(window); + window.set_current_time(100); + + window.add(quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ), 18); + window.add(quad( + namedNode('https://rsp.js/test_subject_1'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ), 5); + expect(window.active_windows.size).toBe(0); +}); + +test('out_of_order_processing', () => { + let window: CSPARQLWindow; + const width = 10; + const slide = 5; + const max_delay = 10; + const start_time = 0; + window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, start_time, max_delay); + + window.subscribe('RStream', (data: any) => { + console.log(`RStream output: ${data}`); + }); + + window.set_current_time(20); + + window.add(quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ), 28); + window.add(quad( + namedNode('https://rsp.js/test_subject_1'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ), 15); + window.add(quad( + namedNode('https://rsp.js/test_subject_2'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ), 14); + expect(window.active_windows.size).toBe(2); + clearInterval(window.interval_id); +}); \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 0a99c8c..17a9051 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -1,6 +1,6 @@ -import {EventEmitter} from "events"; +import { EventEmitter } from "events"; // @ts-ignore -import {Quad} from 'n3'; +import { Quad } from 'n3'; export enum ReportStrategy { NonEmptyContent, @@ -23,15 +23,15 @@ export class WindowInstance { } getDefinition() { - return "["+this.open+","+this.close+")"; + return "[" + this.open + "," + this.close + ")"; } - hasCode(){ + hasCode() { return 0; } } -export class QuadContainer{ +export class QuadContainer { elements: Set; last_time_stamp_changed: number; constructor(elements: Set, ts: number) { @@ -42,7 +42,7 @@ export class QuadContainer{ len() { return this.elements.size; } - add(quad: Quad, ts: number){ + add(quad: Quad, ts: number) { this.elements.add(quad); this.last_time_stamp_changed = ts; } @@ -62,8 +62,11 @@ export class CSPARQLWindow { report: ReportStrategy; tick: Tick; emitter: EventEmitter; + interval_id: NodeJS.Timeout; name: string; - constructor(name:string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time : number) { + private late_buffer: Map>; // Buffer for out-of-order late elements + private max_delay: number; // The maximum delay allowed for a observation to be considered in the window + constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { this.name = name; this.width = width; this.slide = slide; @@ -72,108 +75,147 @@ export class CSPARQLWindow { this.time = start_time; this.t0 = start_time; this.active_windows = new Map(); - let EventEmitter = require('events').EventEmitter; this.emitter = new EventEmitter(); + this.max_delay = max_delay; + this.late_buffer = new Map>(); + this.interval_id = setInterval(() => { this.process_late_elements() }, this.slide); } - getContent(timestamp: number): QuadContainer | undefined{ + getContent(timestamp: number): QuadContainer | undefined { let max_window = null; let max_time = Number.MAX_SAFE_INTEGER; - this.active_windows.forEach((value: QuadContainer,window:WindowInstance)=> { - if(window.open <= timestamp && timestamp <= window.close){ - if(window.close < max_time){ + this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { + if (window.open <= timestamp && timestamp <= window.close) { + if (window.close < max_time) { max_time = window.close; max_window = window; } } }); - if(max_window){ + if (max_window) { return this.active_windows.get(max_window); - }else{ + } else { return undefined; } } add(e: Quad, timestamp: number) { - console.debug("Window " + this.name+ " Received element (" + e + "," + timestamp + ")"); + console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); let toEvict = new Set(); let t_e = timestamp; if (this.time > t_e) { - console.error("OUT OF ORDER NOT HANDLED"); + if (this.time - t_e > this.max_delay) { + console.error("Late element [" + e + "] with timestamp [" + t_e + "] is out of the allowed delay [" + this.max_delay + "]"); + return; + } + else { + console.warn("Late element [" + e + "] with timestamp [" + t_e + "] is being buffered for out of order processing"); + if (!this.late_buffer.has(t_e)) { + this.late_buffer.set(t_e, new Set()); + } + this.late_buffer.get(t_e)?.add(e); + return; + } + } + + this.process_event(e, t_e, toEvict); + + for (let w of toEvict) { + console.debug("Evicting [" + w.open + "," + w.close + ")"); + this.active_windows.delete(w); } + } + + process_event(e: Quad, t_e: number, toEvict: Set) { this.scope(t_e); - for ( let w of this.active_windows.keys()){ - console.debug("Processing Window " + this.name+ " [" + w.open + "," + w.close + ") for element (" + e + "," + timestamp + ")"); - if (w.open <= t_e && t_e < w.close ){ - console.debug("Adding element [" + e + "] to Window [" + w.open + "," + w.close + ")"); - let temp_window = this.active_windows.get(w); - if(temp_window){ - temp_window.add(e, timestamp); - } - } else if (t_e > w.close ){ - console.debug("Scheduling for Eviction [" + w.open + "," + w.close + ")"); - toEvict.add(w); + for (let w of this.active_windows.keys()) { + if (w.open <= t_e && t_e < w.close) { + let temp_window = this.active_windows.get(w); + if (temp_window) { + temp_window.add(e, t_e); } + } else if (t_e > w.close) { + toEvict.add(w); + } } + + this.emit_on_trigger(t_e); + } + + + emit_on_trigger(t_e: number) { let max_window = null; let max_time = 0; - this.active_windows.forEach((value: QuadContainer,window:WindowInstance)=> { - if(this.compute_report(window,value, timestamp)){ - if(window.close > max_time){ + this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { + if (this.compute_report(window, value, t_e)) { + if (window.close > max_time) { max_time = window.close; max_window = window; } } }); - if(max_window){ - if(this.tick == Tick.TimeDriven){ - if(timestamp > this.time){ - this.time = timestamp; + + if (max_window) { + if (this.tick == Tick.TimeDriven) { + if (t_e > this.time) { + this.time = t_e; this.emitter.emit('RStream', this.active_windows.get(max_window)); // @ts-ignore - console.log("Window ["+ max_window.open + "," + max_window.close + ") triggers. Content: " + this.active_windows.get(max_window)); + console.log("Window [" + max_window.open + "," + max_window.close + ") triggers. Content: " + this.active_windows.get(max_window)); } } } - - for(let w of toEvict){ - console.debug("Evicting [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } - } - compute_report(w: WindowInstance, content: QuadContainer, timestamp: number){ - if(this.report == ReportStrategy.OnWindowClose) { + + compute_report(w: WindowInstance, content: QuadContainer, timestamp: number) { + if (this.report == ReportStrategy.OnWindowClose) { return w.close < timestamp; } return false; } - scope(t_e:number){ - let c_sup = Math.ceil(( Math.abs(t_e - this.t0) / this.slide)) * this.slide; + scope(t_e: number) { + let c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; let o_i = c_sup - this.width; - console.debug("Calculating the Windows to Open. First one opens at [" + o_i + "] and closes at [" + c_sup + "]"); do { - console.debug("Computing Window [" + o_i + "," + (o_i + this.width) + ") if absent"); - computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), ()=>new QuadContainer(new Set(),0)); + computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); o_i += this.slide; } while (o_i <= t_e); } - subscribe(output: 'RStream'|'IStream'|'DStream', call_back: (data: QuadContainer) => void) { - this.emitter.on(output,call_back); + subscribe(output: 'RStream' | 'IStream' | 'DStream', call_back: (data: QuadContainer) => void) { + this.emitter.on(output, call_back); + } + + process_late_elements() { + this.late_buffer.forEach((elements: Set, timestamp: number) => { + elements.forEach((element: Quad) => { + let to_evict = new Set(); + this.process_event(element, timestamp, to_evict); + + for (let w of to_evict) { + console.debug("Evicting [" + w.open + "," + w.close + ")"); + this.active_windows.delete(w); + } + }); + }); + this.late_buffer.clear(); + } + + set_current_time(t: number) { + this.time = t; } } function computeWindowIfAbsent(map: Map, key: WindowInstance, mappingFunction: (key: WindowInstance) => QuadContainer) { let val = map.get(key); let found = false; - for (let w of map.keys()){ - if (w.open == key.open && w.close == key.close){ + for (let w of map.keys()) { + if (w.open == key.open && w.close == key.close) { found = true; break; } diff --git a/src/rsp.ts b/src/rsp.ts index a39ea1c..af27652 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -51,7 +51,7 @@ export class RSPEngine { let parser = new RSPQLParser(); let parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { - let windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0); + let windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); this.windows.push(windowImpl); let stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); From c97999bc41ce87aecfe3f5f4234c9ec1ff503467 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Mon, 1 Jul 2024 16:21:01 +0200 Subject: [PATCH 02/50] feat: Add max_delay configuration to log_config.json and use it in RSPEngine --- src/config/log_config.json | 3 ++- src/rsp.ts | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/src/config/log_config.json b/src/config/log_config.json index 5efccd0..f43a002 100644 --- a/src/config/log_config.json +++ b/src/config/log_config.json @@ -4,5 +4,6 @@ "RDFStream", "RSPEngine" ], - "destination": "FILE" + "destination": "FILE", + "max_delay": 60000 } \ No newline at end of file diff --git a/src/rsp.ts b/src/rsp.ts index af27652..5085c3d 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -51,7 +51,7 @@ export class RSPEngine { let parser = new RSPQLParser(); let parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { - let windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + let windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, LOG_CONFIG.max_delay); this.windows.push(windowImpl); let stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); From d7d2ce603180e9e342d6997f03dd6b9334fa1919 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 2 Jul 2024 14:08:50 +0200 Subject: [PATCH 03/50] printing the size of the window. --- dist/config/log_config.json | 3 ++- dist/operators/s2r.test.js | 1 + dist/rsp.js | 52 +++++++++++++++++++------------------ dist/rspql.js | 6 +++-- src/operators/s2r.test.ts | 4 +-- src/operators/s2r.ts | 1 - src/rsp.ts | 52 +++++++++++++++++++------------------ src/rspql.ts | 50 ++++++++++++++++++----------------- 8 files changed, 89 insertions(+), 80 deletions(-) diff --git a/dist/config/log_config.json b/dist/config/log_config.json index 8546489..f39ad60 100644 --- a/dist/config/log_config.json +++ b/dist/config/log_config.json @@ -4,5 +4,6 @@ "RDFStream", "RSPEngine" ], - "destination": "FILE" + "destination": "FILE", + "max_delay": 60000 } diff --git a/dist/operators/s2r.test.js b/dist/operators/s2r.test.js index 67b2614..623e07b 100644 --- a/dist/operators/s2r.test.js +++ b/dist/operators/s2r.test.js @@ -105,6 +105,7 @@ test('out_of_order_processing', () => { console.log(`RStream output: ${data}`); }); window.set_current_time(20); + console.log(window); window.add(quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 28); window.add(quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 15); window.add(quad(namedNode('https://rsp.js/test_subject_2'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 14); diff --git a/dist/rsp.js b/dist/rsp.js index 9247c5a..273874b 100644 --- a/dist/rsp.js +++ b/dist/rsp.js @@ -67,7 +67,7 @@ class RSPEngine { let parser = new rspql_1.RSPQLParser(); let parsed_query = parser.parse(query); parsed_query.s2r.forEach((window) => { - let windowImpl = new s2r_1.CSPARQLWindow(window.window_name, window.width, window.slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); + let windowImpl = new s2r_1.CSPARQLWindow(window.window_name, window.width, window.slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, LOG_CONFIG.max_delay); this.windows.push(windowImpl); let stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); @@ -79,33 +79,35 @@ class RSPEngine { let emitter = new EventEmitter(); this.windows.forEach((window) => { window.subscribe("RStream", (data) => __awaiter(this, void 0, void 0, function* () { - this.logger.info(`Received window content ${data} for time ${data.last_time_changed()}`, `RSPEngine`); - // iterate over all the windows - for (let windowIt of this.windows) { - // filter out the current triggering one - if (windowIt != window) { - let currentWindowData = windowIt.getContent(data.last_time_changed()); - if (currentWindowData) { - // add the content of the other windows to the quad container - currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + if (data.len() > 0) { + this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + // iterate over all the windows + for (let windowIt of this.windows) { + // filter out the current triggering one + if (windowIt != window) { + let currentWindowData = windowIt.getContent(data.last_time_changed()); + if (currentWindowData) { + // add the content of the other windows to the quad container + currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + } } } + this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + let bindingsStream = yield this.r2r.execute(data); + bindingsStream.on('data', (binding) => { + let object_with_timestamp = { + bindings: binding, + timestamp_from: window.t0, + timestamp_to: window.t0 + window.slide + }; + window.t0 += window.slide; + emitter.emit("RStream", object_with_timestamp); + }); + bindingsStream.on('end', () => { + this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + }); + yield bindingsStream; } - this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_stamp_changed}`, `RSPEngine`); - let bindingsStream = yield this.r2r.execute(data); - bindingsStream.on('data', (binding) => { - let object_with_timestamp = { - bindings: binding, - timestamp_from: window.t0, - timestamp_to: window.t0 + window.slide - }; - window.t0 += window.slide; - emitter.emit("RStream", object_with_timestamp); - }); - bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()}`, `RSPEngine`); - }); - yield bindingsStream; })); }); return emitter; diff --git a/dist/rspql.js b/dist/rspql.js index 3b67367..371b878 100644 --- a/dist/rspql.js +++ b/dist/rspql.js @@ -41,10 +41,12 @@ class RSPQLParser { const regexp = /FROM +NAMED +WINDOW +([^ ]+) +ON +STREAM +([^ ]+) +\[RANGE +([^ ]+) +STEP +([^ ]+)\]/g; const matches = trimmed_line.matchAll(regexp); for (const match of matches) { - parsed.add_s2r({ window_name: this.unwrap(match[1], prefixMapper), + parsed.add_s2r({ + window_name: this.unwrap(match[1], prefixMapper), stream_name: this.unwrap(match[2], prefixMapper), width: Number(match[3]), - slide: Number(match[4]) }); + slide: Number(match[4]) + }); } } else { diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index c1d651d..c6a6a73 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -170,7 +170,7 @@ test('out_of_order_processing', () => { }); window.set_current_time(20); - +console.log(window); window.add(quad( namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), @@ -189,6 +189,6 @@ test('out_of_order_processing', () => { namedNode('http://rsp.js/test_object'), defaultGraph(), ), 14); - expect(window.active_windows.size).toBe(2); + expect(window.active_windows.size).toBe(2); clearInterval(window.interval_id); }); \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 17a9051..20e915d 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -129,7 +129,6 @@ export class CSPARQLWindow { process_event(e: Quad, t_e: number, toEvict: Set) { this.scope(t_e); - for (let w of this.active_windows.keys()) { if (w.open <= t_e && t_e < w.close) { let temp_window = this.active_windows.get(w); diff --git a/src/rsp.ts b/src/rsp.ts index 5085c3d..6aa08c0 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -46,7 +46,7 @@ export class RSPEngine { constructor(query: string) { this.windows = new Array(); this.streams = new Map(); - const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; + const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); let parser = new RSPQLParser(); let parsed_query = parser.parse(query); @@ -65,33 +65,35 @@ export class RSPEngine { let emitter = new EventEmitter(); this.windows.forEach((window) => { window.subscribe("RStream", async (data: QuadContainer) => { - this.logger.info(`Received window content ${data} for time ${data.last_time_changed()}`, `RSPEngine`); - // iterate over all the windows - for (let windowIt of this.windows) { - // filter out the current triggering one - if (windowIt != window) { - let currentWindowData = windowIt.getContent(data.last_time_changed()); - if (currentWindowData) { - // add the content of the other windows to the quad container - currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + if (data.len() > 0) { + this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + // iterate over all the windows + for (let windowIt of this.windows) { + // filter out the current triggering one + if (windowIt != window) { + let currentWindowData = windowIt.getContent(data.last_time_changed()); + if (currentWindowData) { + // add the content of the other windows to the quad container + currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + } } } + this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + let bindingsStream = await this.r2r.execute(data); + bindingsStream.on('data', (binding: any) => { + let object_with_timestamp: binding_with_timestamp = { + bindings: binding, + timestamp_from: window.t0, + timestamp_to: window.t0 + window.slide + } + window.t0 += window.slide; + emitter.emit("RStream", object_with_timestamp); + }); + bindingsStream.on('end', () => { + this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + }); + await bindingsStream; } - this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_stamp_changed}`, `RSPEngine`); - let bindingsStream = await this.r2r.execute(data); - bindingsStream.on('data', (binding: any) => { - let object_with_timestamp: binding_with_timestamp = { - bindings: binding, - timestamp_from: window.t0, - timestamp_to: window.t0 + window.slide - } - window.t0 += window.slide; - emitter.emit("RStream", object_with_timestamp); - }); - bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()}`, `RSPEngine`); - }); - await bindingsStream; }) }); return emitter; diff --git a/src/rspql.ts b/src/rspql.ts index 2803bab..1f93b77 100644 --- a/src/rspql.ts +++ b/src/rspql.ts @@ -5,17 +5,17 @@ export class ParsedQuery { constructor() { this.sparql = "Select * WHERE{?s ?p ?o}"; // @ts-ignore - this.r2s = {operator: "RStream", name: "undefined"}; + this.r2s = { operator: "RStream", name: "undefined" }; this.s2r = new Array(); } - set_sparql(sparql: string){ + set_sparql(sparql: string) { this.sparql = sparql; } - set_r2s(r2s: R2S){ + set_r2s(r2s: R2S) { this.r2s = r2s; } - add_s2r(s2r: WindowDefinition){ + add_s2r(s2r: WindowDefinition) { this.s2r.push(s2r); } } @@ -30,42 +30,44 @@ type R2S = { name: string } export class RSPQLParser { - parse(query: string): ParsedQuery{ + parse(query: string): ParsedQuery { let parsed = new ParsedQuery(); let split = query.split(/\r?\n/); let sparqlLines = new Array(); - let prefixMapper = new Map(); - split.forEach((line)=>{ + let prefixMapper = new Map(); + split.forEach((line) => { let trimmed_line = line.trim(); //R2S if (trimmed_line.startsWith("REGISTER")) { const regexp = /REGISTER +([^ ]+) +<([^>]+)> AS/g; const matches = trimmed_line.matchAll(regexp); for (const match of matches) { - if (match[1]=== "RStream" || match[1]=== "DStream" || match[1]=== "IStream"){ - parsed.set_r2s({operator: match[1], name: match[2]}); + if (match[1] === "RStream" || match[1] === "DStream" || match[1] === "IStream") { + parsed.set_r2s({ operator: match[1], name: match[2] }); } } } - else if(trimmed_line.startsWith("FROM NAMED WINDOW")){ + else if (trimmed_line.startsWith("FROM NAMED WINDOW")) { const regexp = /FROM +NAMED +WINDOW +([^ ]+) +ON +STREAM +([^ ]+) +\[RANGE +([^ ]+) +STEP +([^ ]+)\]/g; const matches = trimmed_line.matchAll(regexp); for (const match of matches) { - parsed.add_s2r({window_name: this.unwrap(match[1],prefixMapper), - stream_name: this.unwrap(match[2],prefixMapper), + parsed.add_s2r({ + window_name: this.unwrap(match[1], prefixMapper), + stream_name: this.unwrap(match[2], prefixMapper), width: Number(match[3]), - slide: Number(match[4])}); + slide: Number(match[4]) + }); } - }else{ + } else { let sparqlLine = trimmed_line; - if (sparqlLine.startsWith("WINDOW")){ - sparqlLine = sparqlLine.replace("WINDOW","GRAPH"); + if (sparqlLine.startsWith("WINDOW")) { + sparqlLine = sparqlLine.replace("WINDOW", "GRAPH"); } - if (sparqlLine.startsWith("PREFIX")){ + if (sparqlLine.startsWith("PREFIX")) { const regexp = /PREFIX +([^:]*): +<([^>]+)>/g; const matches = trimmed_line.matchAll(regexp); for (const match of matches) { - prefixMapper.set(match[1],match[2]); + prefixMapper.set(match[1], match[2]); } } sparqlLines.push(sparqlLine); @@ -74,15 +76,15 @@ export class RSPQLParser { parsed.sparql = sparqlLines.join("\n"); return parsed; } - unwrap(prefixedIri: string, mapper: Map){ - if(prefixedIri.trim().startsWith("<")){ - return prefixedIri.trim().slice(1,-1); + unwrap(prefixedIri: string, mapper: Map) { + if (prefixedIri.trim().startsWith("<")) { + return prefixedIri.trim().slice(1, -1); } let split = prefixedIri.trim().split(":"); let iri = split[0]; - if (mapper.has(iri)){ - return mapper.get(iri)+split[1]; - }else{ + if (mapper.has(iri)) { + return mapper.get(iri) + split[1]; + } else { return ""; } } From f9bce4e2ef0facee8de9f8c8a73e1c55043a242c Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 2 Jul 2024 15:26:27 +0200 Subject: [PATCH 04/50] reusing windows. --- dist/operators/s2r.d.ts | 1 + dist/operators/s2r.js | 7 ++++++- src/operators/s2r.ts | 13 +++++++++---- 3 files changed, 16 insertions(+), 5 deletions(-) diff --git a/dist/operators/s2r.d.ts b/dist/operators/s2r.d.ts index ccb9dfb..e265db6 100644 --- a/dist/operators/s2r.d.ts +++ b/dist/operators/s2r.d.ts @@ -19,6 +19,7 @@ export declare class WindowInstance { constructor(open: number, close: number); getDefinition(): string; hasCode(): number; + is_same(other_window: WindowInstance): boolean; } export declare class QuadContainer { elements: Set; diff --git a/dist/operators/s2r.js b/dist/operators/s2r.js index f997658..be5ee6b 100644 --- a/dist/operators/s2r.js +++ b/dist/operators/s2r.js @@ -26,6 +26,9 @@ class WindowInstance { hasCode() { return 0; } + is_same(other_window) { + return this.open == other_window.open && this.close == other_window.close; + } } exports.WindowInstance = WindowInstance; class QuadContainer { @@ -179,8 +182,9 @@ function computeWindowIfAbsent(map, key, mappingFunction) { let val = map.get(key); let found = false; for (let w of map.keys()) { - if (w.open == key.open && w.close == key.close) { + if (w.is_same(key)) { found = true; + val = map.get(w); break; } } @@ -188,4 +192,5 @@ function computeWindowIfAbsent(map, key, mappingFunction) { val = mappingFunction(key); map.set(key, val); } + return val; } diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 20e915d..f5e722e 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -28,6 +28,10 @@ export class WindowInstance { hasCode() { return 0; } + + is_same(other_window: WindowInstance): boolean { + return this.open == other_window.open && this.close == other_window.close; + } } @@ -182,11 +186,10 @@ export class CSPARQLWindow { do { computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); o_i += this.slide; - } while (o_i <= t_e); - } + subscribe(output: 'RStream' | 'IStream' | 'DStream', call_back: (data: QuadContainer) => void) { this.emitter.on(output, call_back); } @@ -213,9 +216,11 @@ export class CSPARQLWindow { function computeWindowIfAbsent(map: Map, key: WindowInstance, mappingFunction: (key: WindowInstance) => QuadContainer) { let val = map.get(key); let found = false; + for (let w of map.keys()) { - if (w.open == key.open && w.close == key.close) { + if (w.is_same(key)) { found = true; + val = map.get(w); break; } } @@ -223,5 +228,5 @@ function computeWindowIfAbsent(map: Map, key: Win val = mappingFunction(key); map.set(key, val); } - + return val; } From f348263b77177c71ec4ff69f2e998c788f2add98 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 3 Jul 2024 11:08:01 +0200 Subject: [PATCH 05/50] added watermarking and support for OnContentChange report strategy --- src/operators/s2r.ts | 43 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 40 insertions(+), 3 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index f5e722e..a6ff47c 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -17,9 +17,11 @@ export enum Tick { export class WindowInstance { open: number; close: number; + has_triggered: boolean; constructor(open: number, close: number) { this.open = open; this.close = close; + this.has_triggered = false; } getDefinition() { @@ -68,6 +70,7 @@ export class CSPARQLWindow { emitter: EventEmitter; interval_id: NodeJS.Timeout; name: string; + private current_watermark: number; // To track the current watermark of the window private late_buffer: Map>; // Buffer for out-of-order late elements private max_delay: number; // The maximum delay allowed for a observation to be considered in the window constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { @@ -77,6 +80,7 @@ export class CSPARQLWindow { this.report = report; this.tick = tick; this.time = start_time; + this.current_watermark = start_time; this.t0 = start_time; this.active_windows = new Map(); this.emitter = new EventEmitter(); @@ -145,8 +149,32 @@ export class CSPARQLWindow { } this.emit_on_trigger(t_e); + this.update_watermark(t_e); } + update_watermark(new_time: number) { + if (new_time > this.current_watermark) { + this.current_watermark = new_time; + this.check_watermark(); + } + } + + check_watermark() { + let to_evict = new Set(); + this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { + if (window.close <= this.current_watermark - this.max_delay) { + to_evict.add(window); + } + }); + + for (let window of to_evict) { + this.active_windows.delete(window); + this.emitter.emit('RStream', this.active_windows.get(window)); + console.debug(`Watermark evicting window ${window.getDefinition()}`) + } + + + } emit_on_trigger(t_e: number) { let max_window = null; @@ -164,9 +192,16 @@ export class CSPARQLWindow { if (this.tick == Tick.TimeDriven) { if (t_e > this.time) { this.time = t_e; - this.emitter.emit('RStream', this.active_windows.get(max_window)); - // @ts-ignore - console.log("Window [" + max_window.open + "," + max_window.close + ") triggers. Content: " + this.active_windows.get(max_window)); + if (max_window) { + // @ts-ignore + if (!max_window.has_triggered || this.report == ReportStrategy.OnContentChange) { + // @ts-ignore + max_window.has_triggered = true; + this.emitter.emit('RStream', this.active_windows.get(max_window)); + // @ts-ignore + console.log("Window [" + max_window.open + "," + max_window.close + ") triggers. Content: " + this.active_windows.get(max_window)); + } + } } } } @@ -175,6 +210,8 @@ export class CSPARQLWindow { compute_report(w: WindowInstance, content: QuadContainer, timestamp: number) { if (this.report == ReportStrategy.OnWindowClose) { return w.close < timestamp; + } else if (this.report == ReportStrategy.OnContentChange) { + return true; } return false; From 5ff311908e3fd44402583a86b31c54778f573fa5 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 3 Jul 2024 11:17:43 +0200 Subject: [PATCH 06/50] checking if the window data is defined or not. --- src/rsp.ts | 54 ++++++++++++++++++++++++++++-------------------------- 1 file changed, 28 insertions(+), 26 deletions(-) diff --git a/src/rsp.ts b/src/rsp.ts index 6aa08c0..707ffa0 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -65,36 +65,38 @@ export class RSPEngine { let emitter = new EventEmitter(); this.windows.forEach((window) => { window.subscribe("RStream", async (data: QuadContainer) => { - if (data.len() > 0) { - this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); - // iterate over all the windows - for (let windowIt of this.windows) { - // filter out the current triggering one - if (windowIt != window) { - let currentWindowData = windowIt.getContent(data.last_time_changed()); - if (currentWindowData) { - // add the content of the other windows to the quad container - currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + if (data) { + if (data.len() > 0) { + this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + // iterate over all the windows + for (let windowIt of this.windows) { + // filter out the current triggering one + if (windowIt != window) { + let currentWindowData = windowIt.getContent(data.last_time_changed()); + if (currentWindowData) { + // add the content of the other windows to the quad container + currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + } } } + this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + let bindingsStream = await this.r2r.execute(data); + bindingsStream.on('data', (binding: any) => { + let object_with_timestamp: binding_with_timestamp = { + bindings: binding, + timestamp_from: window.t0, + timestamp_to: window.t0 + window.slide + } + window.t0 += window.slide; + emitter.emit("RStream", object_with_timestamp); + }); + bindingsStream.on('end', () => { + this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + }); + await bindingsStream; } - this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); - let bindingsStream = await this.r2r.execute(data); - bindingsStream.on('data', (binding: any) => { - let object_with_timestamp: binding_with_timestamp = { - bindings: binding, - timestamp_from: window.t0, - timestamp_to: window.t0 + window.slide - } - window.t0 += window.slide; - emitter.emit("RStream", object_with_timestamp); - }); - bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); - }); - await bindingsStream; } - }) + }); }); return emitter; } From b4036767f4a3da14d36595f2b524866ce79ebea3 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 3 Jul 2024 11:36:08 +0200 Subject: [PATCH 07/50] removing window emit from check_watermark function. --- src/config/log_config.json | 2 +- src/operators/s2r.ts | 3 --- 2 files changed, 1 insertion(+), 4 deletions(-) diff --git a/src/config/log_config.json b/src/config/log_config.json index f43a002..a21f31f 100644 --- a/src/config/log_config.json +++ b/src/config/log_config.json @@ -5,5 +5,5 @@ "RSPEngine" ], "destination": "FILE", - "max_delay": 60000 + "max_delay": 120000 } \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index a6ff47c..5943345 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -169,11 +169,8 @@ export class CSPARQLWindow { for (let window of to_evict) { this.active_windows.delete(window); - this.emitter.emit('RStream', this.active_windows.get(window)); console.debug(`Watermark evicting window ${window.getDefinition()}`) } - - } emit_on_trigger(t_e: number) { From 94b6f533d8588c53c8e5cdedd41035317c7ebaa9 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 3 Jul 2024 13:26:16 +0200 Subject: [PATCH 08/50] trying a fix to remove multiple window triggers. --- src/operators/s2r.ts | 42 ++++++++++++++++++++++++++++++++++-------- 1 file changed, 34 insertions(+), 8 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 5943345..2b362f7 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -143,7 +143,7 @@ export class CSPARQLWindow { if (temp_window) { temp_window.add(e, t_e); } - } else if (t_e > w.close) { + } else if (t_e >= w.close) { toEvict.add(w); } } @@ -174,6 +174,34 @@ export class CSPARQLWindow { } emit_on_trigger(t_e: number) { + + if (this.late_buffer.size === 0) { + let windows_to_trigger: WindowInstance[] = []; + + this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { + if (this.compute_report(window, value, t_e)) { + windows_to_trigger.push(window); + } + }); + + + if (windows_to_trigger.length > 0) { + if (this.tick == Tick.TimeDriven){ + if (t_e > this.time){ + this.time = t_e; + windows_to_trigger.forEach((window: WindowInstance) => { + if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { + window.has_triggered = true; + this.emitter.emit('RStream', this.active_windows.get(window)); + console.log(`Window ${window.getDefinition()} triggers. Content: " + ${this.active_windows.get(window)}`); + } + }); + } + } + } + + } + let max_window = null; let max_time = 0; this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { @@ -196,7 +224,7 @@ export class CSPARQLWindow { max_window.has_triggered = true; this.emitter.emit('RStream', this.active_windows.get(max_window)); // @ts-ignore - console.log("Window [" + max_window.open + "," + max_window.close + ") triggers. Content: " + this.active_windows.get(max_window)); + console.log(`Window ${max_window.getDefinition()} triggers. Content: " + ${this.active_windows.get(max_window)}`); } } } @@ -229,18 +257,16 @@ export class CSPARQLWindow { } process_late_elements() { + let to_evict = new Set(); + this.late_buffer.forEach((elements: Set, timestamp: number) => { elements.forEach((element: Quad) => { - let to_evict = new Set(); this.process_event(element, timestamp, to_evict); - - for (let w of to_evict) { - console.debug("Evicting [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } }); }); + this.late_buffer.clear(); + this.emit_on_trigger(this.current_watermark); } set_current_time(t: number) { From 8a619b8bb1119b4a5133b504ae049edd16cd7fce Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 4 Jul 2024 23:24:16 +0200 Subject: [PATCH 09/50] This reverts commit b4036767f4a3da14d36595f2b524866ce79ebea3 and adds watermarking logic but trigger fails currently. --- src/config/log_config.json | 2 +- src/operators/s2r.ts | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/src/config/log_config.json b/src/config/log_config.json index a21f31f..f43a002 100644 --- a/src/config/log_config.json +++ b/src/config/log_config.json @@ -5,5 +5,5 @@ "RSPEngine" ], "destination": "FILE", - "max_delay": 120000 + "max_delay": 60000 } \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 2b362f7..1ff66c6 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -169,8 +169,11 @@ export class CSPARQLWindow { for (let window of to_evict) { this.active_windows.delete(window); + this.emitter.emit('RStream', this.active_windows.get(window)); console.debug(`Watermark evicting window ${window.getDefinition()}`) } + + } emit_on_trigger(t_e: number) { From c9026a31fd44e4773aabf64dc7d5dc66d06d658e Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 4 Jul 2024 23:24:47 +0200 Subject: [PATCH 10/50] adds watermarking with a failing test for triggering the window. --- .eslintrc.js | 73 + esdoc.json | 6 + package-lock.json | 5357 +++++++++++++++++++++++++++++++----- package.json | 18 +- src/config/log_config.json | 3 +- src/operators/r2r.test.ts | 16 +- src/operators/r2r.ts | 19 +- src/operators/s2r.test.ts | 340 +-- src/operators/s2r.ts | 316 ++- src/rsp.test.ts | 122 +- src/rsp.ts | 62 +- src/rspql.test.ts | 34 +- src/rspql.ts | 44 +- src/util/Logger.ts | 86 + 14 files changed, 5497 insertions(+), 999 deletions(-) create mode 100644 .eslintrc.js create mode 100644 esdoc.json diff --git a/.eslintrc.js b/.eslintrc.js new file mode 100644 index 0000000..423cdd1 --- /dev/null +++ b/.eslintrc.js @@ -0,0 +1,73 @@ +module.exports = { + root: true, + env: {node: true, es2020: true, jest: true}, + extends: [ + 'eslint:recommended' + ], + ignorePatterns: ['dist', '.eslintrc.cjs', 'tests'], + parserOptions: {ecmaVersion: 'latest', sourceType: 'module'}, + parser: '@typescript-eslint/parser', + plugins: ['jsdoc', 'jest'], + rules: { + 'prefer-const': ['error', { + 'destructuring': 'any', + 'ignoreReadBeforeAssign': false + }], + // 'no-multiple-empty-lines': ['error', + // {'max': 1, 'maxEOF': 0} + // ], + // 'indent': ['error', 2], + // 'semi': ['error', 'always'], + // 'camelcase': 'error', + // 'quotes': ['error', 'single', { 'avoidEscape': true }], + 'jsdoc/check-access': 1, // Recommended + 'jsdoc/check-alignment': 1, // Recommended + // 'jsdoc/check-examples': 1, + // 'jsdoc/check-indentation': 1, + // 'jsdoc/check-line-alignment': 1, + 'jsdoc/check-param-names': 1, // Recommended + 'jsdoc/check-property-names': 1, // Recommended + // 'jsdoc/check-syntax': 1, + 'jsdoc/check-tag-names': 1, // Recommended + 'jsdoc/check-types': 1, // Recommended + 'jsdoc/check-values': 1, // Recommended + 'jsdoc/empty-tags': 1, // Recommended + 'jsdoc/implements-on-classes': 1, // Recommended + // 'jsdoc/informative-docs': 1, + // 'jsdoc/match-description': 1, + 'jsdoc/multiline-blocks': 1, // Recommended + // 'jsdoc/no-bad-blocks': 1, + // 'jsdoc/no-blank-block-descriptions': 1, + // 'jsdoc/no-defaults': 1, + // 'jsdoc/no-missing-syntax': 1, + 'jsdoc/no-multi-asterisks': 1, // Recommended + // 'jsdoc/no-restricted-syntax': 1, + // 'jsdoc/no-types': 1, + 'jsdoc/no-undefined-types': 1, // Recommended + // 'jsdoc/require-asterisk-prefix': 1, + 'jsdoc/require-description': 1, + 'jsdoc/require-description-complete-sentence': 1, + // 'jsdoc/require-example': 1, + // 'jsdoc/require-file-overview': 1, + 'jsdoc/require-hyphen-before-param-description': 1, + 'jsdoc/require-jsdoc': [1, { contexts: ['ClassDeclaration', 'ClassProperty', 'FunctionDeclaration', 'MethodDefinition'] }], + 'jsdoc/require-param': 1, // Recommended + 'jsdoc/require-param-description': 1, // Recommended + 'jsdoc/require-param-name': 1, // Recommended + 'jsdoc/require-param-type': 1, // Recommended + 'jsdoc/require-property': 1, // Recommended + 'jsdoc/require-property-description': 1, // Recommended + 'jsdoc/require-property-name': 1, // Recommended + 'jsdoc/require-property-type': 1, // Recommended + 'jsdoc/require-returns': 1, // Recommended + 'jsdoc/require-returns-check': 1, // Recommended + 'jsdoc/require-returns-description': 1, // Recommended + 'jsdoc/require-returns-type': 1, // Recommended + // 'jsdoc/require-throws': 1, + 'jsdoc/require-yields': 1, // Recommended + 'jsdoc/require-yields-check': 1, // Recommended + // 'jsdoc/sort-tags': 1, + 'jsdoc/tag-lines': 1, // Recommended + 'jsdoc/valid-types': 1 // Recommended + }, + } \ No newline at end of file diff --git a/esdoc.json b/esdoc.json new file mode 100644 index 0000000..b6896ab --- /dev/null +++ b/esdoc.json @@ -0,0 +1,6 @@ +{ + "source": "./src", + "destination": "./docs", + "plugins": [{"name": "esdoc-standard-plugin"}] + } + \ No newline at end of file diff --git a/package-lock.json b/package-lock.json index 5360a35..741a1ba 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,16 +1,22 @@ { "name": "rsp-js", - "version": "1.2.1", + "version": "1.4.0", "lockfileVersion": 2, "requires": true, "packages": { "": { "name": "rsp-js", - "version": "1.2.1", + "version": "1.4.0", "license": "MIT", "dependencies": { "@comunica/query-sparql": "^2.5.2", - "n3": "^1.16.3" + "@typescript-eslint/parser": "^7.15.0", + "esdoc": "^1.1.0", + "eslint": "^8.57.0", + "eslint-plugin-jest": "^28.6.0", + "eslint-plugin-jsdoc": "^48.5.0", + "n3": "^1.16.3", + "tslog": "^4.9.3" }, "devDependencies": { "@types/jest": "^29.2.4", @@ -24,7 +30,7 @@ "version": "2.2.1", "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.2.1.tgz", "integrity": "sha512-lFMjJTrFL3j7L9yBxwYfCq2k6qqwHyzuUl/XBnif78PWTJYyL/dfowQHWE3sp6U6ZzqWiiIZnpTMO96zhkjwtg==", - "dev": true, + "devOptional": true, "dependencies": { "@jridgewell/gen-mapping": "^0.3.0", "@jridgewell/trace-mapping": "^0.3.9" @@ -37,7 +43,7 @@ "version": "7.21.4", "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.21.4.tgz", "integrity": "sha512-LYvhNKfwWSPpocw8GI7gpK2nq3HSDuEPC/uSYaALSJu9xjsalaaYFOq0Pwt5KmVqwEbZlDu81aLXwBOmD/Fv9g==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/highlight": "^7.18.6" }, @@ -49,7 +55,7 @@ "version": "7.21.4", "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.21.4.tgz", "integrity": "sha512-/DYyDpeCfaVinT40FPGdkkb+lYSKvsVuMjDAG7jPOWWiM1ibOaB9CXJAlc4d1QpP/U2q2P9jbrSlClKSErd55g==", - "dev": true, + "devOptional": true, "engines": { "node": ">=6.9.0" } @@ -58,7 +64,7 @@ "version": "7.21.4", "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.21.4.tgz", "integrity": "sha512-qt/YV149Jman/6AfmlxJ04LMIu8bMoyl3RB91yTFrxQmgbrSvQMy7cI8Q62FHx1t8wJ8B5fu0UDoLwHAhUo1QA==", - "dev": true, + "devOptional": true, "dependencies": { "@ampproject/remapping": "^2.2.0", "@babel/code-frame": "^7.21.4", @@ -88,13 +94,13 @@ "version": "1.9.0", "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.9.0.tgz", "integrity": "sha512-ASFBup0Mz1uyiIjANan1jzLQami9z1PoYSZCiiYW2FczPbenXc45FZdBZLzOT+r6+iciuEModtmCti+hjaAk0A==", - "dev": true + "devOptional": true }, "node_modules/@babel/core/node_modules/semver": { "version": "6.3.0", "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz", "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==", - "dev": true, + "devOptional": true, "bin": { "semver": "bin/semver.js" } @@ -103,7 +109,7 @@ "version": "7.21.4", "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.21.4.tgz", "integrity": "sha512-NieM3pVIYW2SwGzKoqfPrQsf4xGs9M9AIG3ThppsSRmO+m7eQhmI6amajKMUeIO37wFfsvnvcxQFx6x6iqxDnA==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/types": "^7.21.4", "@jridgewell/gen-mapping": "^0.3.2", @@ -118,7 +124,7 @@ "version": "7.21.4", "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.21.4.tgz", "integrity": "sha512-Fa0tTuOXZ1iL8IeDFUWCzjZcn+sJGd9RZdH9esYVjEejGmzf+FFYQpMi/kZUk2kPy/q1H3/GPw7np8qar/stfg==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/compat-data": "^7.21.4", "@babel/helper-validator-option": "^7.21.0", @@ -137,7 +143,7 @@ "version": "5.1.1", "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-5.1.1.tgz", "integrity": "sha512-KpNARQA3Iwv+jTA0utUVVbrh+Jlrr1Fv0e56GGzAFOXN7dk/FviaDW8LHmK52DlcH4WP2n6gI8vN1aesBFgo9w==", - "dev": true, + "devOptional": true, "dependencies": { "yallist": "^3.0.2" } @@ -146,7 +152,7 @@ "version": "6.3.0", "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz", "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==", - "dev": true, + "devOptional": true, "bin": { "semver": "bin/semver.js" } @@ -155,7 +161,7 @@ "version": "7.18.9", "resolved": "https://registry.npmjs.org/@babel/helper-environment-visitor/-/helper-environment-visitor-7.18.9.tgz", "integrity": "sha512-3r/aACDJ3fhQ/EVgFy0hpj8oHyHpQc+LPtJoY9SzTThAsStm4Ptegq92vqKoE3vD706ZVFWITnMnxucw+S9Ipg==", - "dev": true, + "devOptional": true, "engines": { "node": ">=6.9.0" } @@ -164,7 +170,7 @@ "version": "7.21.0", "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.21.0.tgz", "integrity": "sha512-HfK1aMRanKHpxemaY2gqBmL04iAPOPRj7DxtNbiDOrJK+gdwkiNRVpCpUJYbUT+aZyemKN8brqTOxzCaG6ExRg==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/template": "^7.20.7", "@babel/types": "^7.21.0" @@ -177,7 +183,7 @@ "version": "7.18.6", "resolved": "https://registry.npmjs.org/@babel/helper-hoist-variables/-/helper-hoist-variables-7.18.6.tgz", "integrity": "sha512-UlJQPkFqFULIcyW5sbzgbkxn2FKRgwWiRexcuaR8RNJRy8+LLveqPjwZV/bwrLZCN0eUHD/x8D0heK1ozuoo6Q==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/types": "^7.18.6" }, @@ -189,7 +195,7 @@ "version": "7.21.4", "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.21.4.tgz", "integrity": "sha512-orajc5T2PsRYUN3ZryCEFeMDYwyw09c/pZeaQEZPH0MpKzSvn3e0uXsDBu3k03VI+9DBiRo+l22BfKTpKwa/Wg==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/types": "^7.21.4" }, @@ -201,7 +207,7 @@ "version": "7.21.2", "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.21.2.tgz", "integrity": "sha512-79yj2AR4U/Oqq/WOV7Lx6hUjau1Zfo4cI+JLAVYeMV5XIlbOhmjEk5ulbTc9fMpmlojzZHkUUxAiK+UKn+hNQQ==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/helper-environment-visitor": "^7.18.9", "@babel/helper-module-imports": "^7.18.6", @@ -220,7 +226,7 @@ "version": "7.20.2", "resolved": "https://registry.npmjs.org/@babel/helper-plugin-utils/-/helper-plugin-utils-7.20.2.tgz", "integrity": "sha512-8RvlJG2mj4huQ4pZ+rU9lqKi9ZKiRmuvGuM2HlWmkmgOhbs6zEAw6IEiJ5cQqGbDzGZOhwuOQNtZMi/ENLjZoQ==", - "dev": true, + "devOptional": true, "engines": { "node": ">=6.9.0" } @@ -229,7 +235,7 @@ "version": "7.20.2", "resolved": "https://registry.npmjs.org/@babel/helper-simple-access/-/helper-simple-access-7.20.2.tgz", "integrity": "sha512-+0woI/WPq59IrqDYbVGfshjT5Dmk/nnbdpcF8SnMhhXObpTq2KNBdLFRFrkVdbDOyUmHBCxzm5FHV1rACIkIbA==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/types": "^7.20.2" }, @@ -241,7 +247,7 @@ "version": "7.18.6", "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.18.6.tgz", "integrity": "sha512-bde1etTx6ZyTmobl9LLMMQsaizFVZrquTEHOqKeQESMKo4PlObf+8+JA25ZsIpZhT/WEd39+vOdLXAFG/nELpA==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/types": "^7.18.6" }, @@ -253,7 +259,7 @@ "version": "7.19.4", "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.19.4.tgz", "integrity": "sha512-nHtDoQcuqFmwYNYPz3Rah5ph2p8PFeFCsZk9A/48dPc/rGocJ5J3hAAZ7pb76VWX3fZKu+uEr/FhH5jLx7umrw==", - "dev": true, + "devOptional": true, "engines": { "node": ">=6.9.0" } @@ -262,7 +268,7 @@ "version": "7.19.1", "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.19.1.tgz", "integrity": "sha512-awrNfaMtnHUr653GgGEs++LlAvW6w+DcPrOliSMXWCKo597CwL5Acf/wWdNkf/tfEQE3mjkeD1YOVZOUV/od1w==", - "dev": true, + "devOptional": true, "engines": { "node": ">=6.9.0" } @@ -271,7 +277,7 @@ "version": "7.21.0", "resolved": "https://registry.npmjs.org/@babel/helper-validator-option/-/helper-validator-option-7.21.0.tgz", "integrity": "sha512-rmL/B8/f0mKS2baE9ZpyTcTavvEuWhTTW8amjzXNvYG4AwBsqTLikfXsEofsJEfKHf+HQVQbFOHy6o+4cnC/fQ==", - "dev": true, + "devOptional": true, "engines": { "node": ">=6.9.0" } @@ -280,7 +286,7 @@ "version": "7.21.0", "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.21.0.tgz", "integrity": "sha512-XXve0CBtOW0pd7MRzzmoyuSj0e3SEzj8pgyFxnTT1NJZL38BD1MK7yYrm8yefRPIDvNNe14xR4FdbHwpInD4rA==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/template": "^7.20.7", "@babel/traverse": "^7.21.0", @@ -294,7 +300,7 @@ "version": "7.18.6", "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.18.6.tgz", "integrity": "sha512-u7stbOuYjaPezCuLj29hNW1v64M2Md2qupEKP1fHc7WdOA3DgLh37suiSrZYY7haUB7iBeQZ9P1uiRF359do3g==", - "dev": true, + "devOptional": true, "dependencies": { "@babel/helper-validator-identifier": "^7.18.6", "chalk": "^2.0.0", @@ -308,7 +314,7 @@ "version": "3.2.1", "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz", "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==", - "dev": true, + "devOptional": true, "dependencies": { "color-convert": "^1.9.0" }, @@ -320,7 +326,7 @@ "version": "2.4.2", "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz", "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==", - "dev": true, + "devOptional": true, "dependencies": { "ansi-styles": "^3.2.1", "escape-string-regexp": "^1.0.5", @@ -334,7 +340,7 @@ "version": "1.9.3", "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz", "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==", - "dev": true, + "devOptional": true, "dependencies": { "color-name": "1.1.3" } @@ -343,13 +349,13 @@ "version": "1.1.3", "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz", "integrity": "sha512-72fSenhMw2HZMTVHeCA9KCmpEIbzWiQsjN+BHcBbS9vr1mtt+vJjPdksIBNUmKAW8TFUDPJK5SUU3QhE9NEXDw==", - "dev": true + "devOptional": true }, "node_modules/@babel/highlight/node_modules/escape-string-regexp": { "version": "1.0.5", "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz", "integrity": "sha512-vbRorB5FUQWvla16U8R/qgaFIya2qGzwDrNmCZuYKrbdSUMG6I1ZCGQRefkRVhuOkIGVne7BQ35DSfo1qvJqFg==", - "dev": true, + "devOptional": true, "engines": { "node": ">=0.8.0" } @@ -358,7 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"https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-2.0.1.tgz", + "integrity": "sha512-jRKe/iQYMyVJpzPH+3HL97Lgu5HrCfii+qSo+TfjKHtOnvbnvdVfMYrn9Q34YV81M2e5sviJlI6Ko9y+nByzvA==", + "optional": true + }, "xmlchars": { "version": "2.2.0", "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz", @@ -12964,7 +16982,7 @@ "version": "3.1.1", "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz", "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==", - "dev": true + "devOptional": true }, "yargs": { "version": "17.7.1", @@ -12988,8 +17006,7 @@ "yocto-queue": { "version": "0.1.0", "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz", - "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==", - "dev": true + "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==" } } } diff --git a/package.json b/package.json index e5ae29b..bd77d3d 100644 --- a/package.json +++ b/package.json @@ -9,9 +9,17 @@ "start": "node dist/index.js", "test": "jest --coverage", "test:watch": "jest --watch", + "docs": "esdoc", + "lint:ts": "eslint . --ext ts --report-unused-disable-directives --max-warnings 0", + "lint:ts:fix": "eslint . --ext ts --report-unused-disable-directives --max-warnings 0 --fix", "release": "npm run build && npm publish --access public" }, - "keywords": ["RSP", "RDF Stream Processing", "Semantic Web", "RDF"], + "keywords": [ + "RSP", + "RDF Stream Processing", + "Semantic Web", + "RDF" + ], "author": "Pieter Bonte", "license": "MIT", "devDependencies": { @@ -23,6 +31,12 @@ }, "dependencies": { "@comunica/query-sparql": "^2.5.2", - "n3": "^1.16.3" + "@typescript-eslint/parser": "^7.15.0", + "esdoc": "^1.1.0", + "eslint": "^8.57.0", + "eslint-plugin-jest": "^28.6.0", + "eslint-plugin-jsdoc": "^48.5.0", + "n3": "^1.16.3", + "tslog": "^4.9.3" } } diff --git a/src/config/log_config.json b/src/config/log_config.json index f43a002..5efccd0 100644 --- a/src/config/log_config.json +++ b/src/config/log_config.json @@ -4,6 +4,5 @@ "RDFStream", "RSPEngine" ], - "destination": "FILE", - "max_delay": 60000 + "destination": "FILE" } \ No newline at end of file diff --git a/src/operators/r2r.test.ts b/src/operators/r2r.test.ts index 236abf6..775bd90 100644 --- a/src/operators/r2r.test.ts +++ b/src/operators/r2r.test.ts @@ -8,7 +8,7 @@ import { Quad } from 'n3'; import { R2ROperator } from "./r2r"; test('test_query_engine', async () => { - let r2r = new R2ROperator(`SELECT * WHERE { ?s ?p ?o }`); + const r2r = new R2ROperator(`SELECT * WHERE { ?s ?p ?o }`); const quad1 = quad( namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), @@ -21,12 +21,12 @@ test('test_query_engine', async () => { namedNode('http://rsp.js/test_object'), defaultGraph(), ); - let quadSet = new Set(); + const quadSet = new Set(); quadSet.add(quad1); quadSet.add(quad2); - let container = new QuadContainer(quadSet, 0); + const container = new QuadContainer(quadSet, 0); const bindingsStream = await r2r.execute(container); - let resuults = new Array(); + const resuults = new Array(); // @ts-ignore bindingsStream.on('data', (binding) => { console.log(binding.toString()); // Quick way to print bindings for testing @@ -41,7 +41,7 @@ test('test_query_engine', async () => { }); test('test_query_engine_with_extension_functions', async () => { - let r2r = new R2ROperator(` + const r2r = new R2ROperator(` PREFIX extension: SELECT (extension:sqrt(?o) as ?sqrt) (extension:pow(?o,2) as ?pow) WHERE { ?s ?p ?o }`); const quad1 = quad( @@ -56,12 +56,12 @@ test('test_query_engine_with_extension_functions', async () => { literal('9'), defaultGraph(), ); - let quadSet = new Set(); + const quadSet = new Set(); quadSet.add(quad1); quadSet.add(quad2); - let container = new QuadContainer(quadSet, 0); + const container = new QuadContainer(quadSet, 0); const bindingsStream = await r2r.execute(container); - let results = new Array(); + const results = new Array(); // @ts-ignore bindingsStream.on('data', (binding) => { results.push(binding); diff --git a/src/operators/r2r.ts b/src/operators/r2r.ts index 79c0ff4..c014699 100644 --- a/src/operators/r2r.ts +++ b/src/operators/r2r.ts @@ -4,23 +4,38 @@ const N3 = require('n3'); const DF = new DataFactory(); // @ts-ignore import { Literal, Quad } from 'n3'; +/** + * + */ export class R2ROperator { query: string; staticData: Set; + /** + * + * @param query + */ constructor(query: string) { this.query = query; this.staticData = new Set(); } + /** + * + * @param quad + */ addStaticData(quad: Quad) { this.staticData.add(quad); } + /** + * + * @param container + */ async execute(container: QuadContainer) { const store = new N3.Store(); - for (let elem of container.elements) { + for (const elem of container.elements) { store.addQuad(elem); } - for (let elem of this.staticData) { + for (const elem of this.staticData) { store.addQuad(elem); } const QueryEngine = require('@comunica/query-sparql').QueryEngine; diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index c6a6a73..b6b831e 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -1,11 +1,13 @@ -import { CSPARQLWindow, QuadContainer, ReportStrategy, Tick, WindowInstance } from './s2r'; - -const N3 = require('n3'); - -const { DataFactory } = N3; +import { EventEmitter } from "events"; +import { DataFactory, Quad } from "n3"; +import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer } from './s2r'; const { namedNode, literal, defaultGraph, quad } = DataFactory; -// @ts-ignore -import { Quad } from 'n3'; + +/** + * + * @param num_events + * @param csparqlWindow + */ function generate_data(num_events: number, csparqlWindow: CSPARQLWindow) { for (let i = 0; i < num_events; i++) { const stream_element = quad( @@ -18,177 +20,207 @@ function generate_data(num_events: number, csparqlWindow: CSPARQLWindow) { } } -test('create_graph_container', () => { - const quad1 = quad( - namedNode('https://ruben.verborgh.org/profile/#me'), - namedNode('http://xmlns.com/foaf/0.1/givenName'), - literal('Ruben', 'en'), - defaultGraph(), - ); - const quad2 = quad( - namedNode('https://ruben.verborgh.org/profile/#me'), - namedNode('http://xmlns.com/foaf/0.1/lastName'), - literal('Verborgh', 'en'), - defaultGraph(), - ); - let content = new Set; - content.add(quad1); - content.add(quad2); - let container = new QuadContainer(content, 0); - - expect(container.len()).toBe(2); - expect(container.last_time_changed()).toBe(0); -}); - - +describe('CSPARQLWindow', () => { + test('create_graph_container', () => { + const quad1 = quad( + namedNode('https://ruben.verborgh.org/profile/#me'), + namedNode('http://xmlns.com/foaf/0.1/givenName'), + literal('Ruben', 'en'), + defaultGraph(), + ); + const quad2 = quad( + namedNode('https://ruben.verborgh.org/profile/#me'), + namedNode('http://xmlns.com/foaf/0.1/lastName'), + literal('Verborgh', 'en'), + defaultGraph(), + ); + const content = new Set; + content.add(quad1); + content.add(quad2); + const container = new QuadContainer(content, 0); -test('add_to_window', () => { - const quad1 = quad( - namedNode('https://rsp.js/test_subject_0'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ); - const quad2 = quad( - namedNode('https://rsp.js/test_subject_1'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ); + expect(container.len()).toBe(2); + expect(container.last_time_changed()).toBe(0); + }); - let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + test('add_to_window', () => { + const quad1 = quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ); + const quad2 = quad( + namedNode('https://rsp.js/test_subject_1'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ); - csparqlWindow.add(quad, 0); -}); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + csparqlWindow.add(quad1, 0); + }); -test('test_scope', () => { - let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); - csparqlWindow.scope(4); - - let num_active_windows = csparqlWindow.active_windows.size; - /** - * open windows: - * [-6, 4) - * [-4, 6) - * [-2, 8) - * [0, 10) - * [2, 12) - * [4, 14) - */ - - expect(num_active_windows).toBe(6); -}); -test('test_evictions', () => { - let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + test('test_scope', () => { + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + csparqlWindow.scope(4); + + const num_active_windows = csparqlWindow.active_windows.size; + /** + * Open windows: + * [-6, 4) + * [-4, 6) + * [-2, 8) + * [0, 10) + * [2, 12) + * [4, 14). + */ + + expect(num_active_windows).toBe(6); + }); - generate_data(10, csparqlWindow); + test('test_evictions', () => { + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); - expect(csparqlWindow.active_windows.size).toBe(5); -}); + generate_data(10, csparqlWindow); -test('test_stream_consumer', () => { - let recevied_data = new Array(); - let received_elementes = new Array; - let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); - // register window consumer - csparqlWindow.subscribe('RStream', function (data: QuadContainer) { - console.log('Foo raised, Args:', data); - console.log('dat size', data.elements.size); - recevied_data.push(data); - data.elements.forEach(item => received_elementes.push(item)); + expect(csparqlWindow.active_windows.size).toBe(5); }); - // generate some data - generate_data(10, csparqlWindow); - expect(recevied_data.length).toBe(4); - expect(received_elementes.length).toBe(2 + 4 + 6 + 8); -}); + test('test_stream_consumer', () => { + const recevied_data = new Array(); + const received_elementes = new Array; + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + // register window consumer + csparqlWindow.subscribe('RStream', function (data: QuadContainer) { + console.log('Foo raised, Args:', data); + console.log('dat size', data.elements.size); + recevied_data.push(data); + data.elements.forEach(item => received_elementes.push(item)); + }); + // generate some data + generate_data(10, csparqlWindow); -test('test_content_get', () => { - let recevied_data = new Array(); - let received_elementes = new Array; - let csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + expect(recevied_data.length).toBe(4); + expect(received_elementes.length).toBe(2 + 4 + 6 + 8); - // generate some data - generate_data(10, csparqlWindow); + }); - let content = csparqlWindow.getContent(10); - expect(content).toBeDefined(); - if (content) { - expect(content.elements.size).toBe(10); - } - let undefinedContent = csparqlWindow.getContent(20); - expect(undefinedContent).toBeUndefined(); -}); -describe('out_of_order_processing', () => { + test('test_content_get', () => { + const recevied_data = new Array(); + const received_elementes = new Array; + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); -}); + // generate some data + generate_data(10, csparqlWindow); + const content = csparqlWindow.getContent(10); + expect(content).toBeDefined(); + if (content) { + expect(content.elements.size).toBe(10); + } + const undefinedContent = csparqlWindow.getContent(20); + expect(undefinedContent).toBeUndefined(); + }); +}); -test('test_the_max_delay_function', () => { +describe('CSPARQLWindow OOO', () => { let window: CSPARQLWindow; const width = 10; const slide = 5; - const max_delay = 50; - const start_time = 0; - window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, start_time, max_delay); + const startTime = 0; + const maxDelay = 2; + const quad1 = quad(DataFactory.blankNode(), DataFactory.namedNode('predicate'), DataFactory.literal('object1')); + const quad2 = quad(DataFactory.blankNode(), DataFactory.namedNode('predicate'), DataFactory.literal('object2')); - window.subscribe('RStream', (data: any) => { - console.log(`RStream output: ${data}`); + beforeEach(() => { + window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay); }); - console.log(window); - window.set_current_time(100); - - window.add(quad( - namedNode('https://rsp.js/test_subject_0'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ), 18); - window.add(quad( - namedNode('https://rsp.js/test_subject_1'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ), 5); - expect(window.active_windows.size).toBe(0); -}); + afterEach(() => { + window.stop(); + }); -test('out_of_order_processing', () => { - let window: CSPARQLWindow; - const width = 10; - const slide = 5; - const max_delay = 10; - const start_time = 0; - window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, start_time, max_delay); + test('should initialize correctly', () => { + expect(window.name).toBe('testWindow'); + expect(window.width).toBe(width); + expect(window.slide).toBe(slide); + expect(window.time).toBe(startTime); + expect(window.max_delay).toBe(maxDelay); + }); + + test('should add element to the active window', () => { + window.add(quad1, 1); + const quadContainer = window.getContent(1); + expect(quadContainer?.len()).toBe(1); + }); + + test('should buffer late elements', () => { + window.add(quad1, 1); + window.add(quad2, 0); + expect(window.late_buffer.size).toBe(1); + expect(window.late_buffer.get(0)?.has(quad2)).toBe(true); + }); + + test('should evict windows based on watermark', () => { + window.add(quad1, 1); + window.set_current_time(12); + window.add(quad2, 12); + const activeWindows = Array.from(window.active_windows.keys()); + expect(activeWindows.length).toBe(2); + window.update_watermark(22); + expect(window.active_windows.size).toBe(0); + }); + + test('should trigger event on window close', (done) => { + window.subscribe('RStream', (data: QuadContainer) => { + expect(data.len()).toBe(1); + done(); + }); + let activeWindows = Array.from(window.active_windows.keys()); + window.add(quad1, 1); + window.set_current_time(12); + window.add(quad2, 12); + expect(activeWindows.length).toBe(2); + window.update_watermark(22); + expect(activeWindows.length).toBe(0); + }); - window.subscribe('RStream', (data: any) => { - console.log(`RStream output: ${data}`); + test('should process late elements', () => { + window.add(quad1, 6); + window.add(quad2, 4); // Late element + window.process_late_elements(); + const quadContainer = window.getContent(0); + console.log(quadContainer); + expect(quadContainer?.len()).toBe(1); }); - window.set_current_time(20); -console.log(window); - window.add(quad( - namedNode('https://rsp.js/test_subject_0'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ), 28); - window.add(quad( - namedNode('https://rsp.js/test_subject_1'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ), 15); - window.add(quad( - namedNode('https://rsp.js/test_subject_2'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ), 14); - expect(window.active_windows.size).toBe(2); - clearInterval(window.interval_id); -}); \ No newline at end of file + test('should update current time when adding a new element', () => { + const initial_time = window.time; + const new_time = initial_time + 10; + window.add(quad1, new_time); + expect(window.time).toBe(new_time); + }); + + test('should trigger on window change', (done) => { + const report_window = new CSPARQLWindow('reportWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay); + const callback = jest.fn((data: QuadContainer) => { + console.log('Callback called'); + expect(data.len()).toBe(1); + expect(data.elements.has(quad1)).toBeTruthy(); + done(); + }); + + report_window.subscribe('RStream', callback); + + // Add first element to the window + report_window.add(quad1, 1); + // Now moving the time forward to trigger the window close report strategy + report_window.set_current_time(11); + report_window.update_watermark(23); + + expect(callback).toHaveBeenCalledTimes(1); + }) +}); diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 1ff66c6..308f6bb 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -14,51 +14,91 @@ export enum Tick { BatchDriven, } +/** + * + */ export class WindowInstance { open: number; close: number; has_triggered: boolean; + /** + * + * @param open + * @param close + */ constructor(open: number, close: number) { this.open = open; this.close = close; this.has_triggered = false; } + /** + * + */ getDefinition() { return "[" + this.open + "," + this.close + ")"; } + /** + * + */ hasCode() { return 0; } + /** + * + * @param other_window + */ is_same(other_window: WindowInstance): boolean { return this.open == other_window.open && this.close == other_window.close; } } +/** + * + */ export class QuadContainer { elements: Set; last_time_stamp_changed: number; + /** + * + * @param elements + * @param ts + */ constructor(elements: Set, ts: number) { this.elements = elements; this.last_time_stamp_changed = ts; } + /** + * + */ len() { return this.elements.size; } + /** + * + * @param quad + * @param ts + */ add(quad: Quad, ts: number) { this.elements.add(quad); this.last_time_stamp_changed = ts; } + /** + * + */ last_time_changed() { return this.last_time_stamp_changed; } } +/** + * + */ export class CSPARQLWindow { width: number; slide: number; @@ -71,8 +111,19 @@ export class CSPARQLWindow { interval_id: NodeJS.Timeout; name: string; private current_watermark: number; // To track the current watermark of the window - private late_buffer: Map>; // Buffer for out-of-order late elements - private max_delay: number; // The maximum delay allowed for a observation to be considered in the window + public late_buffer: Map>; // Buffer for out-of-order late elements + public max_delay: number; // The maximum delay allowed for a observation to be considered in the window + private pending_triggers: Set; // Tracking windows that have pending triggers + /** + * + * @param name + * @param width + * @param slide + * @param report + * @param tick + * @param start_time + * @param max_delay + */ constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { this.name = name; this.width = width; @@ -85,9 +136,14 @@ export class CSPARQLWindow { this.active_windows = new Map(); this.emitter = new EventEmitter(); this.max_delay = max_delay; + this.pending_triggers = new Set(); this.late_buffer = new Map>(); this.interval_id = setInterval(() => { this.process_late_elements() }, this.slide); } + /** + * + * @param timestamp + */ getContent(timestamp: number): QuadContainer | undefined { let max_window = null; let max_time = Number.MAX_SAFE_INTEGER; @@ -106,52 +162,105 @@ export class CSPARQLWindow { } } + /** + * + * @param e + * @param timestamp + */ add(e: Quad, timestamp: number) { console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); - let toEvict = new Set(); - let t_e = timestamp; + const t_e = timestamp; + if (timestamp > this.time) { + this.time = timestamp; + } + console.log("Current Time: " + this.time + " Event Time: " + t_e); - if (this.time > t_e) { - if (this.time - t_e > this.max_delay) { - console.error("Late element [" + e + "] with timestamp [" + t_e + "] is out of the allowed delay [" + this.max_delay + "]"); - return; - } - else { - console.warn("Late element [" + e + "] with timestamp [" + t_e + "] is being buffered for out of order processing"); - if (!this.late_buffer.has(t_e)) { - this.late_buffer.set(t_e, new Set()); - } - this.late_buffer.get(t_e)?.add(e); - return; - } + if (this.if_event_late(t_e)) { + console.log("Event is late at time " + t_e); + this.buffer_late_event(e, t_e); + return; } - this.process_event(e, t_e, toEvict); + const to_evict = this.process_event(e, t_e); + this.evict_windows(to_evict); + + } + + /** + * + * @param timestamp + */ + if_event_late(timestamp: number) { + return this.time > timestamp; + } + + /** + * + * @param e + * @param timestamp + */ + buffer_late_event(e: Quad, timestamp: number) { + if (this.time - timestamp > this.max_delay) { + console.error("Late element [" + e + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); + } + else { + console.warn("Late element [" + e + "] with timestamp [" + timestamp + "] is being buffered for out of order processing"); + if (!this.late_buffer.has(timestamp)) { + this.late_buffer.set(timestamp, new Set()); + } + this.late_buffer.get(timestamp)?.add(e); + } + } - for (let w of toEvict) { + /** + * + * @param toEvict + */ + evict_windows(toEvict: Set) { + for (const w of toEvict) { console.debug("Evicting [" + w.open + "," + w.close + ")"); this.active_windows.delete(w); } - } - process_event(e: Quad, t_e: number, toEvict: Set) { + /** + * + * @param e + * @param t_e + */ + process_event(e: Quad, t_e: number) { + const toEvict = new Set(); this.scope(t_e); - for (let w of this.active_windows.keys()) { + for (const w of this.active_windows.keys()) { if (w.open <= t_e && t_e < w.close) { - let temp_window = this.active_windows.get(w); + const temp_window = this.active_windows.get(w); if (temp_window) { temp_window.add(e, t_e); } } else if (t_e >= w.close) { - toEvict.add(w); + toEvict.add(w); } } - - this.emit_on_trigger(t_e); this.update_watermark(t_e); + console.log(this.get_window_instance(t_e)); + this.pending_triggers.add(this.get_window_instance(t_e)) + return toEvict; + } + + /** + * + * @param t_e + */ + get_window_instance(t_e: number) { + const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; + const o_i = c_sup - this.width; + return new WindowInstance(o_i, o_i + this.width) } + /** + * Updating the watermark. + * @param {number} new_time - The new watermark to be set. + */ update_watermark(new_time: number) { if (new_time > this.current_watermark) { this.current_watermark = new_time; @@ -159,82 +268,96 @@ export class CSPARQLWindow { } } + /** + * + */ check_watermark() { - let to_evict = new Set(); + // Evict windows that are out of the watermark and should be evicted. + const to_evict = new Set(); + // Checking all of the currently active windows. this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { + // If the window is out of the watermark, add it to the eviction list, i.e if it is less than or + // equal to the current watermark minus the maximum delay. if (window.close <= this.current_watermark - this.max_delay) { + // Add the window to the eviction list. to_evict.add(window); } }); - for (let window of to_evict) { + + // Emit triggers for the windows that are within the watermark, if any. + this.emit_on_trigger(this.current_watermark); + + // Evict the windows that are out of the watermark. + for (const window of to_evict) { this.active_windows.delete(window); - this.emitter.emit('RStream', this.active_windows.get(window)); console.debug(`Watermark evicting window ${window.getDefinition()}`) } - - } + /** + * + * @param t_e + */ emit_on_trigger(t_e: number) { - - if (this.late_buffer.size === 0) { - let windows_to_trigger: WindowInstance[] = []; - - this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { - if (this.compute_report(window, value, t_e)) { - windows_to_trigger.push(window); + this.pending_triggers.forEach((window: WindowInstance) => { + console.log("Checking window [" + window.open + "," + window.close + ")"); + const content = this.active_windows.get(window); + + console.log(`Content of the window `,content); + + if (content) { + let should_emit = false; + + if (this.report == ReportStrategy.OnWindowClose) { + if (window.close <= t_e) { + should_emit = true; + } + } + else if (this.report == ReportStrategy.OnContentChange) { + should_emit = true; } - }); - - if (windows_to_trigger.length > 0) { - if (this.tick == Tick.TimeDriven){ - if (t_e > this.time){ - this.time = t_e; - windows_to_trigger.forEach((window: WindowInstance) => { + if (should_emit) { + if (this.tick == Tick.TimeDriven) { + if (t_e > this.time) { + this.time = t_e; if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { window.has_triggered = true; - this.emitter.emit('RStream', this.active_windows.get(window)); - console.log(`Window ${window.getDefinition()} triggers. Content: " + ${this.active_windows.get(window)}`); + this.emitter.emit('RStream', content); + console.log("Window [" + window.open + "," + window.close + ") triggers. Content: " + content); } - }); + } } + this.pending_triggers.delete(window); } } - - } - - let max_window = null; - let max_time = 0; - this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { - if (this.compute_report(window, value, t_e)) { - if (window.close > max_time) { - max_time = window.close; - max_window = window; - } + else { + console.error("Window [" + window.open + "," + window.close + ") has no content"); } - }); + }) + } - if (max_window) { - if (this.tick == Tick.TimeDriven) { - if (t_e > this.time) { - this.time = t_e; - if (max_window) { - // @ts-ignore - if (!max_window.has_triggered || this.report == ReportStrategy.OnContentChange) { - // @ts-ignore - max_window.has_triggered = true; - this.emitter.emit('RStream', this.active_windows.get(max_window)); - // @ts-ignore - console.log(`Window ${max_window.getDefinition()} triggers. Content: " + ${this.active_windows.get(max_window)}`); - } - } - } - } - } + /** + * + */ + stop() { + clearInterval(this.interval_id); } + /** + * + */ + get_current_watermark() { + return this.current_watermark; + } + + /** + * + * @param w + * @param content + * @param timestamp + */ compute_report(w: WindowInstance, content: QuadContainer, timestamp: number) { if (this.report == ReportStrategy.OnWindowClose) { return w.close < timestamp; @@ -245,8 +368,12 @@ export class CSPARQLWindow { } + /** + * + * @param t_e + */ scope(t_e: number) { - let c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; + const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; let o_i = c_sup - this.width; do { computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); @@ -255,32 +382,51 @@ export class CSPARQLWindow { } + /** + * + * @param output + * @param call_back + */ subscribe(output: 'RStream' | 'IStream' | 'DStream', call_back: (data: QuadContainer) => void) { this.emitter.on(output, call_back); } + /** + * + */ process_late_elements() { - let to_evict = new Set(); - this.late_buffer.forEach((elements: Set, timestamp: number) => { elements.forEach((element: Quad) => { - this.process_event(element, timestamp, to_evict); + const to_evict = new Set(); + this.process_event(element, timestamp); + for (const w of to_evict) { + console.debug("Evicting Late [" + w.open + "," + w.close + ")"); + this.active_windows.delete(w); + } }); }); - this.late_buffer.clear(); - this.emit_on_trigger(this.current_watermark); } + /** + * + * @param t + */ set_current_time(t: number) { this.time = t; } } +/** + * + * @param map + * @param key + * @param mappingFunction + */ function computeWindowIfAbsent(map: Map, key: WindowInstance, mappingFunction: (key: WindowInstance) => QuadContainer) { let val = map.get(key); let found = false; - for (let w of map.keys()) { + for (const w of map.keys()) { if (w.is_same(key)) { found = true; val = map.get(w); @@ -292,4 +438,4 @@ function computeWindowIfAbsent(map: Map, key: Win map.set(key, val); } return val; -} +} \ No newline at end of file diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 5d203ab..dee7492 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -1,26 +1,37 @@ -import {RDFStream, RSPEngine} from "./rsp"; +import { RDFStream, RSPEngine } from "./rsp"; const N3 = require('n3'); const { DataFactory } = N3; const { namedNode, defaultGraph, quad } = DataFactory; +/** + * + * @param num_events + * @param rdfStreams + */ function generate_data(num_events: number, rdfStreams: RDFStream[]) { for (let i = 0; i < num_events; i++) { - rdfStreams.forEach((stream)=>{ + rdfStreams.forEach((stream) => { const stream_element = quad( namedNode('https://rsp.js/test_subject_' + i), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph(), ); - stream.add(stream_element, i);}); + stream.add(stream_element, i); + }); } } -function generate_data2(num_events: number, rdfStream: RDFStream) { +/** + * + * @param num_events + * @param rdfStream + */ +async function generate_data2(num_events: number, rdfStream: RDFStream) { for (let i = 0; i < num_events; i++) { const stream_element = quad( - namedNode('https://rsp.js/test_subject_' + i), + namedNode('https://rsp.js/test_subject2_' + i), namedNode('http://rsp.js/test_property2'), namedNode('http://rsp.js/test_object2'), defaultGraph(), @@ -29,7 +40,7 @@ function generate_data2(num_events: number, rdfStream: RDFStream) { } } test('rsp_consumer_test', async () => { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -37,16 +48,16 @@ test('rsp_consumer_test', async () => { WINDOW :w1 { ?s ?p ?o} }`; - let rspEngine = new RSPEngine(query); - let stream= rspEngine.getStream("https://rsp.js/stream1"); - let emitter = rspEngine.register(); - let results = new Array(); + const rspEngine = new RSPEngine(query); + const stream = rspEngine.getStream("https://rsp.js/stream1"); + const emitter = rspEngine.register(); + const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); results.push(object.bindings.toString()); }); - if(stream){ + if (stream) { generate_data(10, [stream]); } @@ -55,11 +66,11 @@ test('rsp_consumer_test', async () => { await sleep(2000); - expect(results.length).toBe(2+4+6+8); + expect(results.length).toBe(2 + 4 + 6 + 8); console.log(results); }); test('rsp_multiple_same_window_test', async () => { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -70,18 +81,18 @@ test('rsp_multiple_same_window_test', async () => { WINDOW :w2 { ?s ?p ?o} }`; - let rspEngine = new RSPEngine(query); - let stream1 = rspEngine.getStream("https://rsp.js/stream1"); - let stream2 = rspEngine.getStream("https://rsp.js/stream2"); + const rspEngine = new RSPEngine(query); + const stream1 = rspEngine.getStream("https://rsp.js/stream1"); + const stream2 = rspEngine.getStream("https://rsp.js/stream2"); - let emitter = rspEngine.register(); - let results = new Array(); + const emitter = rspEngine.register(); + const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); results.push(object.bindings.toString()); }); - if(stream1 && stream2){ + if (stream1 && stream2) { generate_data(10, [stream1, stream2]); } @@ -90,12 +101,12 @@ test('rsp_multiple_same_window_test', async () => { await sleep(1000); - expect(results.length).toBe(2*(2+4+6+8)); + expect(results.length).toBe(2 * (2 + 4 + 6 + 8)); console.log(results); }); test('rsp_multiple_difff_window_test', async () => { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -106,18 +117,18 @@ test('rsp_multiple_difff_window_test', async () => { WINDOW :w2 { ?s ?p2 ?o2} }`; - let rspEngine = new RSPEngine(query); - let stream1 = rspEngine.getStream("https://rsp.js/stream1"); - let stream2 = rspEngine.getStream("https://rsp.js/stream2"); + const rspEngine = new RSPEngine(query); + const stream1 = rspEngine.getStream("https://rsp.js/stream1"); + const stream2 = rspEngine.getStream("https://rsp.js/stream2"); - let emitter = rspEngine.register(); - let results = new Array(); + const emitter = rspEngine.register(); + const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); results.push(object.bindings.toString()); }); - if(stream1 && stream2){ + if (stream1 && stream2) { for (let i = 0; i < 10; i++) { const stream_element = quad( namedNode('https://rsp.js/test_subject_' + i), @@ -141,11 +152,11 @@ test('rsp_multiple_difff_window_test', async () => { await sleep(2000); - expect(results.length).toBe(2+4+6+8); + expect(results.length).toBe(2 + 4 + 6 + 8); console.log(results); }); test('rsp_static_plus_window_test', async () => { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -155,7 +166,7 @@ test('rsp_static_plus_window_test', async () => { WINDOW :w1 { ?s ?p ?o} }`; - let rspEngine = new RSPEngine(query); + const rspEngine = new RSPEngine(query); const static_data = quad( namedNode('http://rsp.js/test_object'), namedNode('https://rsp.js/hasInfo'), @@ -164,16 +175,16 @@ test('rsp_static_plus_window_test', async () => { ); rspEngine.addStaticData(static_data); - let stream1 = rspEngine.getStream("https://rsp.js/stream1"); + const stream1 = rspEngine.getStream("https://rsp.js/stream1"); - let emitter = rspEngine.register(); - let results = new Array(); + const emitter = rspEngine.register(); + const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); results.push(object.bindings.toString()); }); - if(stream1){ + if (stream1) { generate_data(10, [stream1]); } @@ -182,12 +193,12 @@ test('rsp_static_plus_window_test', async () => { await sleep(1000); - expect(results.length).toBe(2+4+6+8); + expect(results.length).toBe(2 + 4 + 6 + 8); console.log(results); }); test('test_get_all_streams', () => { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -197,8 +208,41 @@ test('test_get_all_streams', () => { WINDOW :w1 { ?s ?p ?o} }`; - let rspEngine = new RSPEngine(query); - let streams_registered = rspEngine.get_all_streams(); + const rspEngine = new RSPEngine(query); + const streams_registered = rspEngine.get_all_streams(); expect(streams_registered.length).toBe(1); - expect(streams_registered[0]).toBe("https://rsp.js/stream1"); + expect(streams_registered[0]).toBe("https://rsp.js/stream1"); }) + + +test('test_out_of_order_event_processing', async () => { + const query = `PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + }`; + + const rspEngine = new RSPEngine(query); + const stream = rspEngine.getStream("https://rsp.js/stream1"); + const emitter = rspEngine.register(); + const results = new Array(); + emitter.on('RStream', (object: any) => { + console.log("received results"); + results.push(object.bindings.toString()); + }); + // @ts-ignore + if (stream) { + generate_data(10, [stream]); + } + + // @ts-ignore + const sleep = (ms) => new Promise(r => setTimeout(r, ms)); + + if (stream) { + await generate_data2(10, stream); + } + // expect(results.length).toBe(2 + 4 + 6 + 8 + 2 + 4 + 6 + 8); + console.log(results.length); +}); \ No newline at end of file diff --git a/src/rsp.ts b/src/rsp.ts index 707ffa0..e317802 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -16,13 +16,21 @@ export type binding_with_timestamp = { timestamp_to: number } +/** + * + */ export class RDFStream { name: string; emitter: EventEmitter; + /** + * + * @param name + * @param window + */ constructor(name: string, window: CSPARQLWindow) { this.name = name; - let EventEmitter = require('events').EventEmitter; + const EventEmitter = require('events').EventEmitter; this.emitter = new EventEmitter(); this.emitter.on('data', (quadcontainer: QuadContainer) => { // @ts-ignore @@ -32,47 +40,64 @@ export class RDFStream { }); } + /** + * + * @param event + * @param ts + */ add(event: Set, ts: number) { this.emitter.emit('data', new QuadContainer(event, ts)); } } +/** + * + */ export class RSPEngine { windows: Array; streams: Map; + public max_delay: number; private r2r: R2ROperator; private logger: Logger; - constructor(query: string) { + /** + * + * @param query + */ + constructor(query: string, max_delay: number) { this.windows = new Array(); + this.max_delay = max_delay; this.streams = new Map(); const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); - let parser = new RSPQLParser(); - let parsed_query = parser.parse(query); + const parser = new RSPQLParser(); + const parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { - let windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, LOG_CONFIG.max_delay); + const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay); this.windows.push(windowImpl); - let stream = new RDFStream(window.stream_name, windowImpl); + const stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); }) this.r2r = new R2ROperator(parsed_query.sparql); } + /** + * + */ register() { - let EventEmitter = require('events').EventEmitter; - let emitter = new EventEmitter(); + const EventEmitter = require('events').EventEmitter; + const emitter = new EventEmitter(); this.windows.forEach((window) => { window.subscribe("RStream", async (data: QuadContainer) => { if (data) { if (data.len() > 0) { this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); // iterate over all the windows - for (let windowIt of this.windows) { + for (const windowIt of this.windows) { // filter out the current triggering one if (windowIt != window) { - let currentWindowData = windowIt.getContent(data.last_time_changed()); + const currentWindowData = windowIt.getContent(data.last_time_changed()); if (currentWindowData) { // add the content of the other windows to the quad container currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); @@ -80,9 +105,9 @@ export class RSPEngine { } } this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); - let bindingsStream = await this.r2r.execute(data); + const bindingsStream = await this.r2r.execute(data); bindingsStream.on('data', (binding: any) => { - let object_with_timestamp: binding_with_timestamp = { + const object_with_timestamp: binding_with_timestamp = { bindings: binding, timestamp_from: window.t0, timestamp_to: window.t0 + window.slide @@ -101,16 +126,27 @@ export class RSPEngine { return emitter; } + /** + * + * @param stream_name + */ getStream(stream_name: string) { return this.streams.get(stream_name); } + /** + * + * @param static_data + */ addStaticData(static_data: Quad) { this.r2r.addStaticData(static_data); } + /** + * + */ get_all_streams() { - let streams: string[] = []; + const streams: string[] = []; this.streams.forEach((stream) => { streams.push(stream.name); }); diff --git a/src/rspql.test.ts b/src/rspql.test.ts index 22c8db6..638beef 100644 --- a/src/rspql.test.ts +++ b/src/rspql.test.ts @@ -1,14 +1,14 @@ import {RSPQLParser} from "./rspql"; -let simple_query = `PREFIX : +const simple_query = `PREFIX : REGISTER RStream AS SELECT AVG(?v) as ?avgTemp FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] WHERE{ WINDOW :w1 { ?sensor :value ?v ; :measurement: ?m } }`; -let advanced_query = `PREFIX : +const advanced_query = `PREFIX : REGISTER RStream AS SELECT AVG(?v) as ?avgTemp FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -21,19 +21,19 @@ let advanced_query = `PREFIX : }`; test('test_r2s', async () => { - let parser = new RSPQLParser(); - let parsed_query = parser.parse(simple_query); + const parser = new RSPQLParser(); + const parsed_query = parser.parse(simple_query); - let expected_r2s = {operator: "RStream", name: "output"}; + const expected_r2s = {operator: "RStream", name: "output"}; expect(parsed_query.r2s).toStrictEqual(expected_r2s); }); test('test_single_window', async () => { - let parser = new RSPQLParser(); - let parsed_query = parser.parse(simple_query); + const parser = new RSPQLParser(); + const parsed_query = parser.parse(simple_query); - let expected_windows = {window_name: "https://rsp.js/w1", + const expected_windows = {window_name: "https://rsp.js/w1", stream_name: "https://rsp.js/stream1", width: 10, slide: 2}; @@ -41,10 +41,10 @@ test('test_single_window', async () => { }); test('test_multiple_window', async () => { - let parser = new RSPQLParser(); - let parsed_query = parser.parse(advanced_query); + const parser = new RSPQLParser(); + const parsed_query = parser.parse(advanced_query); - let expected_windows = [{window_name: "https://rsp.js/w1", + const expected_windows = [{window_name: "https://rsp.js/w1", stream_name: "https://rsp.js/stream1", width: 10, slide: 2}, @@ -56,10 +56,10 @@ test('test_multiple_window', async () => { expect(parsed_query.s2r).toStrictEqual(expected_windows); }); test('test_simple_sparql_extract', async () => { - let parser = new RSPQLParser(); - let parsed_query = parser.parse(simple_query); + const parser = new RSPQLParser(); + const parsed_query = parser.parse(simple_query); - let expected_sparql = + const expected_sparql = `PREFIX : SELECT AVG(?v) as ?avgTemp WHERE{ @@ -69,10 +69,10 @@ GRAPH :w1 { ?sensor :value ?v ; :measurement: ?m } }); test('test_sparql_extract_multiple_windows', async () => { - let parser = new RSPQLParser(); - let parsed_query = parser.parse(advanced_query); + const parser = new RSPQLParser(); + const parsed_query = parser.parse(advanced_query); - let expected_sparql = + const expected_sparql = `PREFIX : SELECT AVG(?v) as ?avgTemp diff --git a/src/rspql.ts b/src/rspql.ts index 1f93b77..0b76c9f 100644 --- a/src/rspql.ts +++ b/src/rspql.ts @@ -1,7 +1,13 @@ +/** + * + */ export class ParsedQuery { sparql: string; r2s: R2S; s2r: Array; + /** + * + */ constructor() { this.sparql = "Select * WHERE{?s ?p ?o}"; // @ts-ignore @@ -9,12 +15,24 @@ export class ParsedQuery { this.s2r = new Array(); } + /** + * + * @param sparql + */ set_sparql(sparql: string) { this.sparql = sparql; } + /** + * + * @param r2s + */ set_r2s(r2s: R2S) { this.r2s = r2s; } + /** + * + * @param s2r + */ add_s2r(s2r: WindowDefinition) { this.s2r.push(s2r); } @@ -29,14 +47,21 @@ type R2S = { operator: "RStream" | "IStream" | "DStream", name: string } +/** + * + */ export class RSPQLParser { + /** + * + * @param query + */ parse(query: string): ParsedQuery { - let parsed = new ParsedQuery(); - let split = query.split(/\r?\n/); - let sparqlLines = new Array(); - let prefixMapper = new Map(); + const parsed = new ParsedQuery(); + const split = query.split(/\r?\n/); + const sparqlLines = new Array(); + const prefixMapper = new Map(); split.forEach((line) => { - let trimmed_line = line.trim(); + const trimmed_line = line.trim(); //R2S if (trimmed_line.startsWith("REGISTER")) { const regexp = /REGISTER +([^ ]+) +<([^>]+)> AS/g; @@ -76,12 +101,17 @@ export class RSPQLParser { parsed.sparql = sparqlLines.join("\n"); return parsed; } + /** + * + * @param prefixedIri + * @param mapper + */ unwrap(prefixedIri: string, mapper: Map) { if (prefixedIri.trim().startsWith("<")) { return prefixedIri.trim().slice(1, -1); } - let split = prefixedIri.trim().split(":"); - let iri = split[0]; + const split = prefixedIri.trim().split(":"); + const iri = split[0]; if (mapper.has(iri)) { return mapper.get(iri) + split[1]; } else { diff --git a/src/util/Logger.ts b/src/util/Logger.ts index 5ec28ab..0e8efbf 100644 --- a/src/util/Logger.ts +++ b/src/util/Logger.ts @@ -18,11 +18,20 @@ export enum LogDestination { FILE, } +/** + * + */ export class Logger { private log_level: LogLevel; private loggable_classes: string[]; private log_destination: any; + /** + * + * @param logLevel + * @param loggableClasses + * @param logDestination + */ constructor(logLevel: LogLevel, loggableClasses: string[], logDestination: any) { this.log_level = logLevel; this.loggable_classes = loggableClasses; @@ -31,18 +40,36 @@ export class Logger { } + /** + * + * @param logLevel + */ setLogLevel(logLevel: LogLevel) { this.log_level = logLevel; } + /** + * + * @param loggableClasses + */ setLoggableClasses(loggableClasses: string[]) { this.loggable_classes = loggableClasses; } + /** + * + * @param logDestination + */ setLogDestination(logDestination: LogDestination) { this.log_destination = logDestination; } + /** + * + * @param level + * @param message + * @param className + */ log(level: LogLevel, message: string, className: string) { console.log(`Logging level: ${level}`); console.log(`this.log_level: ${this.log_level}`); @@ -68,50 +95,109 @@ export class Logger { } } + /** + * + * @param message + * @param className + */ trace(message: string, className: string) { this.log(LogLevel.TRACE, message, className); } + /** + * + * @param message + * @param className + */ debug(message: string, className: string) { this.log(LogLevel.DEBUG, message, className); } + /** + * + * @param message + * @param className + */ info(message: string, className: string) { this.log(LogLevel.INFO, message, className); } + /** + * + * @param message + * @param className + */ config(message: string, className: string) { this.log(LogLevel.CONFIG, message, className); } + /** + * + * @param message + * @param className + */ warn(message: string, className: string) { this.log(LogLevel.WARN, message, className); } + /** + * + * @param message + * @param className + */ error(message: string, className: string) { this.log(LogLevel.ERROR, message, className); } + /** + * + * @param message + * @param className + */ fatal(message: string, className: string) { this.log(LogLevel.FATAL, message, className); } + /** + * + * @param message + * @param className + */ severe(message: string, className: string) { this.log(LogLevel.SEVERE, message, className); } + /** + * + * @param message + * @param className + */ audit(message: string, className: string) { this.log(LogLevel.AUDIT, message, className); } + /** + * + * @param message + * @param className + */ stats(message: string, className: string) { this.log(LogLevel.STATS, message, className); } + /** + * + * @param logLevel + * @param loggableClasses + * @param logDestination + */ static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination) { return new Logger(logLevel, loggableClasses, logDestination); } + /** + * + */ static getLoggerWithDefaults() { return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); } From 09936706089001e6f1244c510ad57aef02bcdb08 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Fri, 5 Jul 2024 14:35:15 +0200 Subject: [PATCH 11/50] fixed the bug related to triggering of the window and added tests. --- src/operators/s2r.test.ts | 216 +++++++++++++++++++++++++++++++++++--- src/operators/s2r.ts | 70 +++++++----- src/rsp.test.ts | 23 +++- src/rsp.ts | 15 ++- 4 files changed, 280 insertions(+), 44 deletions(-) diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index b6b831e..bcfef2b 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -1,7 +1,7 @@ import { EventEmitter } from "events"; import { DataFactory, Quad } from "n3"; -import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer } from './s2r'; const { namedNode, literal, defaultGraph, quad } = DataFactory; +import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer } from './s2r'; /** * @@ -157,6 +157,27 @@ describe('CSPARQLWindow OOO', () => { expect(quadContainer?.len()).toBe(1); }); + + test('check if event is late', () => { + window.add(quad1, 1); + window.set_current_time(8); + expect(window.if_event_late(2)).toBe(true); + }); + + + test('should add element to the late buffer', () => { + window.add(quad1, 5); + window.set_current_time(8); + // Add late element + window.buffer_late_event(quad2, 3); + // rejects if it is outside the allowed max_delay window + expect(window.late_buffer.size).toBe(0); + // Adds another late element + window.buffer_late_event(quad2, 7); + // accepts as it is inside the allowed max_delay window + expect(window.late_buffer.size).toBe(1); + }); + test('should buffer late elements', () => { window.add(quad1, 1); window.add(quad2, 0); @@ -174,20 +195,35 @@ describe('CSPARQLWindow OOO', () => { expect(window.active_windows.size).toBe(0); }); - test('should trigger event on window close', (done) => { - window.subscribe('RStream', (data: QuadContainer) => { - expect(data.len()).toBe(1); - done(); - }); - let activeWindows = Array.from(window.active_windows.keys()); - window.add(quad1, 1); - window.set_current_time(12); - window.add(quad2, 12); - expect(activeWindows.length).toBe(2); - window.update_watermark(22); - expect(activeWindows.length).toBe(0); + test('should update the watermark', () => { + expect(window.get_current_watermark()).toBe(0); + window.update_watermark(10); + expect(window.get_current_watermark()).toBe(10); }); + test('should return the window instance', () => { + const windowInstance = window.get_window_instance(1); + expect(windowInstance.open).toBe(-5); + expect(windowInstance.close).toBe(5); + const windowInstance2 = window.get_window_instance(6); + expect(windowInstance2.open).toBe(0); + expect(windowInstance2.close).toBe(10); + }); + + // test('should trigger event on window close', (done) => { + // window.subscribe('RStream', (data: QuadContainer) => { + // expect(data.len()).toBe(1); + // done(); + // }); + // let activeWindows = Array.from(window.active_windows.keys()); + // window.add(quad1, 1); + // window.set_current_time(12); + // window.add(quad2, 12); + // expect(activeWindows.length).toBe(2); + // window.update_watermark(22); + // expect(activeWindows.length).toBe(0); + // }); + test('should process late elements', () => { window.add(quad1, 6); window.add(quad2, 4); // Late element @@ -216,7 +252,7 @@ describe('CSPARQLWindow OOO', () => { report_window.subscribe('RStream', callback); // Add first element to the window - report_window.add(quad1, 1); + report_window.add(quad1, 1); // Now moving the time forward to trigger the window close report strategy report_window.set_current_time(11); report_window.update_watermark(23); @@ -224,3 +260,155 @@ describe('CSPARQLWindow OOO', () => { expect(callback).toHaveBeenCalledTimes(1); }) }); + +describe('CSPARQL Window Watermark Test', () => { + let csparqlWindow: CSPARQLWindow; + let window1: WindowInstance; + let window2: WindowInstance; + let quadContainer1: QuadContainer; + let quadContainer2: QuadContainer; + let quad1: Quad; + + beforeEach(() => { + quad1 = {} as Quad + + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); + window1 = new WindowInstance(0, 10); + window2 = new WindowInstance(5, 15); + quadContainer1 = new QuadContainer(new Set([quad1]), 5); + quadContainer2 = new QuadContainer(new Set([quad1]), 11); + csparqlWindow.active_windows.set(window1, quadContainer1); + csparqlWindow.active_windows.set(window2, quadContainer2); + }); + + afterEach(() => { + csparqlWindow.stop(); + csparqlWindow.set_current_watermark(0); + }); + + it('should evict windows out of the watermark', () => { + csparqlWindow.update_watermark(25); + csparqlWindow.evict_and_trigger_on_watermark(); + expect(csparqlWindow.active_windows.has(window1)).toBeFalsy(); + expect(csparqlWindow.active_windows.has(window2)).toBeFalsy(); + expect(csparqlWindow.active_windows.size).toBe(0); + }); + + it('should not evict windows within the watermark', () => { + csparqlWindow.set_current_watermark(0); + expect(csparqlWindow.active_windows.has(window1)).toBeTruthy(); + expect(csparqlWindow.active_windows.has(window2)).toBeTruthy(); + }); + + it('should not evict windows if the current watermark is still under the decided max delay allowed', () => { + csparqlWindow.update_watermark(10); + csparqlWindow.evict_and_trigger_on_watermark(); + expect(csparqlWindow.active_windows.has(window1)).toBeTruthy(); + expect(csparqlWindow.active_windows.has(window2)).toBeTruthy(); + }); +}); + + + +describe('CSPARQLWindow emit_on_trigger', () => { + let csparqlWindow: CSPARQLWindow; + let quad1: Quad; + let window1: WindowInstance; + let quadContainer1: QuadContainer; + + beforeEach(() => { + quad1 = {} as Quad; + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); + window1 = new WindowInstance(0, 10); + quadContainer1 = new QuadContainer(new Set([quad1]), 5); + csparqlWindow.active_windows.set(window1, quadContainer1); + csparqlWindow.pending_triggers.add(window1); + }); + + it('should emit the correct content when the window is triggered', () => { + const emitSpy = jest.spyOn(csparqlWindow.emitter, 'emit'); + csparqlWindow.set_current_watermark(15); + csparqlWindow.emit_on_trigger(15); + expect(emitSpy).toHaveBeenCalledWith('RStream', quadContainer1); + }); + + it('should not emit if the window has no content', () => { + const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); + csparqlWindow.active_windows.delete(window1); // Remove the content from the window + csparqlWindow.emit_on_trigger(15); + expect(emit_spy).not.toHaveBeenCalled(); + }); + + it('should emit only if the window has not already triggered', () => { + const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); + window1.has_triggered = true; // Set the window to already triggered + csparqlWindow.emit_on_trigger(15); + expect(emit_spy).not.toHaveBeenCalled(); + }); + + it('should clear pending triggers once the window is emitted for processing by the R2R operator', () => { + csparqlWindow.emit_on_trigger(15); + expect(csparqlWindow.pending_triggers.size).toBe(0); + }) + + it('should handle different report strategies', () => { + csparqlWindow.report = ReportStrategy.OnContentChange; + const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); + csparqlWindow.emit_on_trigger(15); + expect(emit_spy).toHaveBeenCalledWith('RStream', quadContainer1); + }); +}); + + +describe('CSPARQLWindow get quads from active windows', () => { + let csparqlWindow: CSPARQLWindow; + let quad1: Quad; + let window1: WindowInstance; + let quadContainer1: QuadContainer; + let window2: WindowInstance; + let quadContainer2: QuadContainer; + + beforeEach(() => { + quad1 = {} as Quad; + + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); + window1 = new WindowInstance(0, 10); + quadContainer1 = new QuadContainer(new Set([quad1]), 9); + window2 = new WindowInstance(5, 15); + quadContainer2 = new QuadContainer(new Set([quad1]), 9); + + csparqlWindow.active_windows.set(window1, quadContainer1); + csparqlWindow.active_windows.set(window2, quadContainer2); + }); + + afterEach(() => { + csparqlWindow.stop(); + }); + + it('should return the correct content from the active windows', () => { + const target_window = new WindowInstance(0, 10); + const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); + expect(content).toBe(quadContainer1); + }); + + it('should return undefined if no matching window is found', () => { + const target_window = new WindowInstance(10, 20); + const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); + expect(content).toBeUndefined(); + }); + + it('should add a window to pending triggers', () => { + csparqlWindow.add(quad1, 2); + const window_instance = csparqlWindow.get_window_instance(2); + expect(hasWindowInstance(csparqlWindow.pending_triggers, window_instance)).toBe(true); + }); +}); + +function hasWindowInstance(set: Set, window: WindowInstance) { + for (const elem of set) { + if (elem.open === window.open && elem.close === window.close) { + return true; + } + } + return false; +} \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 308f6bb..cd2d4a5 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -1,6 +1,8 @@ import { EventEmitter } from "events"; // @ts-ignore import { Quad } from 'n3'; +import { DataFactory } from "n3"; +const { namedNode, literal, defaultGraph, quad } = DataFactory; export enum ReportStrategy { NonEmptyContent, @@ -113,7 +115,7 @@ export class CSPARQLWindow { private current_watermark: number; // To track the current watermark of the window public late_buffer: Map>; // Buffer for out-of-order late elements public max_delay: number; // The maximum delay allowed for a observation to be considered in the window - private pending_triggers: Set; // Tracking windows that have pending triggers + public pending_triggers: Set; // Tracking windows that have pending triggers /** * * @param name @@ -173,7 +175,6 @@ export class CSPARQLWindow { if (timestamp > this.time) { this.time = timestamp; } - console.log("Current Time: " + this.time + " Event Time: " + t_e); if (this.if_event_late(t_e)) { console.log("Event is late at time " + t_e); @@ -223,6 +224,16 @@ export class CSPARQLWindow { } } + add_window_instance_to_pending_triggers(t_e: number) { + let window_instance = this.get_window_instance(t_e); + if (this.hasWindowInstance(this.pending_triggers, window_instance)) { + return; + } + else { + this.pending_triggers.add(window_instance); + } + } + /** * * @param e @@ -238,12 +249,11 @@ export class CSPARQLWindow { temp_window.add(e, t_e); } } else if (t_e >= w.close) { - toEvict.add(w); + toEvict.add(w); } } this.update_watermark(t_e); - console.log(this.get_window_instance(t_e)); - this.pending_triggers.add(this.get_window_instance(t_e)) + this.add_window_instance_to_pending_triggers(t_e); return toEvict; } @@ -264,14 +274,14 @@ export class CSPARQLWindow { update_watermark(new_time: number) { if (new_time > this.current_watermark) { this.current_watermark = new_time; - this.check_watermark(); + this.evict_and_trigger_on_watermark(); } } /** * */ - check_watermark() { + evict_and_trigger_on_watermark() { // Evict windows that are out of the watermark and should be evicted. const to_evict = new Set(); // Checking all of the currently active windows. @@ -301,14 +311,9 @@ export class CSPARQLWindow { */ emit_on_trigger(t_e: number) { this.pending_triggers.forEach((window: WindowInstance) => { - console.log("Checking window [" + window.open + "," + window.close + ")"); - const content = this.active_windows.get(window); - - console.log(`Content of the window `,content); - + let content = this.get_quads_from_active_windows(this.active_windows, window); if (content) { let should_emit = false; - if (this.report == ReportStrategy.OnWindowClose) { if (window.close <= t_e) { should_emit = true; @@ -319,22 +324,15 @@ export class CSPARQLWindow { } if (should_emit) { - if (this.tick == Tick.TimeDriven) { - if (t_e > this.time) { - this.time = t_e; - if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { - window.has_triggered = true; - this.emitter.emit('RStream', content); - console.log("Window [" + window.open + "," + window.close + ") triggers. Content: " + content); - } - } + this.time = t_e; + if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { + window.has_triggered = true; + console.log("Window [" + window.open + "," + window.close + ") triggers. Content: " + content); + this.emitter.emit('RStream', content); } this.pending_triggers.delete(window); } } - else { - console.error("Window [" + window.open + "," + window.close + ") has no content"); - } }) } @@ -415,6 +413,28 @@ export class CSPARQLWindow { set_current_time(t: number) { this.time = t; } + + set_current_watermark(t: number) { + this.current_watermark = t; + } + + get_quads_from_active_windows(map: Map, target: WindowInstance) { + for (let [key, value] of map.entries()) { + if (key.open === target.open && key.close === target.close && key.has_triggered === target.has_triggered) { + return value; + } + } + return undefined; + } + + hasWindowInstance(set: Set, window: WindowInstance) { + for (const elem of set) { + if (elem.open === window.open && elem.close === window.close) { + return true; + } + } + return false; + } } /** * diff --git a/src/rsp.test.ts b/src/rsp.test.ts index dee7492..06e7472 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -11,7 +11,6 @@ const { namedNode, defaultGraph, quad } = DataFactory; */ function generate_data(num_events: number, rdfStreams: RDFStream[]) { for (let i = 0; i < num_events; i++) { - rdfStreams.forEach((stream) => { const stream_element = quad( namedNode('https://rsp.js/test_subject_' + i), @@ -44,7 +43,7 @@ test('rsp_consumer_test', async () => { REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE{ + WHERE { WINDOW :w1 { ?s ?p ?o} }`; @@ -55,8 +54,10 @@ test('rsp_consumer_test', async () => { // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); + results.push(object.bindings.toString()); }); + if (stream) { generate_data(10, [stream]); } @@ -87,6 +88,9 @@ test('rsp_multiple_same_window_test', async () => { const emitter = rspEngine.register(); const results = new Array(); + + console.log(rspEngine.get_all_streams()); + // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); @@ -245,4 +249,19 @@ test('test_out_of_order_event_processing', async () => { } // expect(results.length).toBe(2 + 4 + 6 + 8 + 2 + 4 + 6 + 8); console.log(results.length); +}); + +test('test setting the max delay for out of order events', async () => { + const query = `PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + }`; + + const rsp_engine = new RSPEngine(query); + expect(rsp_engine.max_delay).toBe(0); + let rsp_engine_2 = new RSPEngine(query, 1000); + expect(rsp_engine_2.max_delay).toBe(1000); }); \ No newline at end of file diff --git a/src/rsp.ts b/src/rsp.ts index e317802..23a9259 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -64,16 +64,21 @@ export class RSPEngine { * * @param query */ - constructor(query: string, max_delay: number) { + constructor(query: string, max_delay?: number) { this.windows = new Array(); - this.max_delay = max_delay; + if (max_delay) { + this.max_delay = max_delay; + } + else { + this.max_delay = 0; + } this.streams = new Map(); const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); const parser = new RSPQLParser(); const parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { - const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay); + const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay); this.windows.push(windowImpl); const stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); @@ -93,6 +98,7 @@ export class RSPEngine { if (data) { if (data.len() > 0) { this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + console.log(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); // iterate over all the windows for (const windowIt of this.windows) { // filter out the current triggering one @@ -105,6 +111,7 @@ export class RSPEngine { } } this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); const bindingsStream = await this.r2r.execute(data); bindingsStream.on('data', (binding: any) => { const object_with_timestamp: binding_with_timestamp = { @@ -152,4 +159,6 @@ export class RSPEngine { }); return streams; } + + } From c7c7f4a1cddbf5b92dd10085a05272c5c99a9f14 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Fri, 5 Jul 2024 15:14:05 +0200 Subject: [PATCH 12/50] adds 2 more tests in rsp.test.js for OOO. --- src/operators/r2r.ts | 2 +- src/rsp.test.ts | 92 ++++++++++++++++++++++++++++++++++++++++++-- src/rsp.ts | 1 + 3 files changed, 91 insertions(+), 4 deletions(-) diff --git a/src/operators/r2r.ts b/src/operators/r2r.ts index c014699..3f94bc8 100644 --- a/src/operators/r2r.ts +++ b/src/operators/r2r.ts @@ -39,7 +39,7 @@ export class R2ROperator { store.addQuad(elem); } const QueryEngine = require('@comunica/query-sparql').QueryEngine; - + const myEngine = new QueryEngine(); return await myEngine.queryBindings(this.query, { sources: [store], diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 06e7472..c638d03 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -54,7 +54,7 @@ test('rsp_consumer_test', async () => { // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); - + results.push(object.bindings.toString()); }); @@ -90,7 +90,7 @@ test('rsp_multiple_same_window_test', async () => { const results = new Array(); console.log(rspEngine.get_all_streams()); - + // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); @@ -264,4 +264,90 @@ test('test setting the max delay for out of order events', async () => { expect(rsp_engine.max_delay).toBe(0); let rsp_engine_2 = new RSPEngine(query, 1000); expect(rsp_engine_2.max_delay).toBe(1000); -}); \ No newline at end of file +}); + + +test('test out of order processing with different delays', async () => { + const query = ` + PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + } + `; + + const rsp_engine = new RSPEngine(query); + const stream = rsp_engine.getStream("https://rsp.js/stream1"); + const emitter = rsp_engine.register(); + const results = new Array(); + + const event = quad( + namedNode(`https://rsp.js/test_subject`), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph() + ) + + emitter.on('RStream', (object: any) => { + results.push(object.bindings.toString()); + }); + + if (stream) { + stream.add(event, 0); + stream.add(event, 3); + stream.add(event, 1); + stream.add(event, 2); + stream.add(event, 4); + } + + const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); + await sleep(2000); + + expect(results.length).toBeGreaterThan(0); + console.log(results); +}); + + +test('test ooo event processing with varying delay settings', async() => { + const query = ` + PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + } + `; + + const rsp_engine = new RSPEngine(query, 1000); + const stream = rsp_engine.getStream("https://rsp.js/stream1"); + const emitter = rsp_engine.register(); + const results = new Array(); + + const event = quad( + namedNode(`https://rsp.js/test_subject`), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph() + ) + + emitter.on('RStream', (object: any) => { + results.push(object.bindings.toString()); + }); + + if (stream) { + stream.add(event, 0); + stream.add(event, 3); + stream.add(event, 1); + stream.add(event, 2); + stream.add(event, 4); + } + + const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); + await sleep(2000); + + expect(results.length).toBeGreaterThan(0); + console.log(results); +}) \ No newline at end of file diff --git a/src/rsp.ts b/src/rsp.ts index 23a9259..3c4ebbe 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -120,6 +120,7 @@ export class RSPEngine { timestamp_to: window.t0 + window.slide } window.t0 += window.slide; + this.logger.info(`Value ${object_with_timestamp}`, `RSPEngine`); emitter.emit("RStream", object_with_timestamp); }); bindingsStream.on('end', () => { From eb792218cf39d3d3f57934f0df4d892f184b7cfd Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 9 Jul 2024 11:16:41 +0200 Subject: [PATCH 13/50] feat: Add CSPARQLWindow to log_config.json and IntervalManager class This commit adds "CSPARQLWindow" to the "classes_to_log" array in the log_config.json file. It also introduces a new IntervalManager class in the IntervalManager.ts file, which is responsible for managing intervals and clearing them when necessary. --- src/config/log_config.json | 3 +- src/operators/r2r.ts | 25 ++++--- src/operators/s2r.test.ts | 19 ++---- src/operators/s2r.ts | 86 ++++++++++++++++++------ src/rsp.test.ts | 121 +++++++++++++++++++++++++++++---- src/rsp.ts | 45 +++++++------ src/rspql.ts | 38 ++++++----- src/util/IntervalManager.ts | 20 ++++++ src/util/Logger.ts | 129 ++++++++++++++++++------------------ 9 files changed, 329 insertions(+), 157 deletions(-) create mode 100644 src/util/IntervalManager.ts diff --git a/src/config/log_config.json b/src/config/log_config.json index 5efccd0..44f24bf 100644 --- a/src/config/log_config.json +++ b/src/config/log_config.json @@ -2,7 +2,8 @@ "log_level": "INFO", "classes_to_log": [ "RDFStream", - "RSPEngine" + "RSPEngine", + "CSPARQLWindow" ], "destination": "FILE" } \ No newline at end of file diff --git a/src/operators/r2r.ts b/src/operators/r2r.ts index 3f94bc8..4eb35d4 100644 --- a/src/operators/r2r.ts +++ b/src/operators/r2r.ts @@ -2,32 +2,38 @@ import { QuadContainer } from "./s2r"; import { DataFactory } from "rdf-data-factory"; const N3 = require('n3'); const DF = new DataFactory(); +const QueryEngine = require('@comunica/query-sparql').QueryEngine; // @ts-ignore -import { Literal, Quad } from 'n3'; +import { Quad } from 'n3'; /** - * + * R2R Operator Implementation Class for the RSP Engine. + * It performs operations such as Join, Filter, Aggregation on a stream of data + * to generate a new stream of data. */ export class R2ROperator { query: string; staticData: Set; /** - * - * @param query + * Constructor to initialize the R2R Operator. + * @param {string} query - The query to be executed. */ constructor(query: string) { this.query = query; this.staticData = new Set(); } /** - * - * @param quad + * Add static data to the R2R Operator which will be used in the query execution + * In case there are some quads which are present in each of the relation to be executed, it is better to add them as static data + * and therefore save space and the amount of data to be processed. + * @param {Quad} quad - The quad to be added as static data. */ addStaticData(quad: Quad) { this.staticData.add(quad); } /** - * - * @param container + * Execute the R2R Operator on the given container of quads. + * @param {QuadContainer} container - The container of quads on which the operator is to be executed. The container contains a set of quads. + * @returns {Promise} - The promise of the result of the query execution. */ async execute(container: QuadContainer) { const store = new N3.Store(); @@ -38,8 +44,7 @@ export class R2ROperator { for (const elem of this.staticData) { store.addQuad(elem); } - const QueryEngine = require('@comunica/query-sparql').QueryEngine; - + const myEngine = new QueryEngine(); return await myEngine.queryBindings(this.query, { sources: [store], diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index bcfef2b..f01616d 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -210,20 +210,6 @@ describe('CSPARQLWindow OOO', () => { expect(windowInstance2.close).toBe(10); }); - // test('should trigger event on window close', (done) => { - // window.subscribe('RStream', (data: QuadContainer) => { - // expect(data.len()).toBe(1); - // done(); - // }); - // let activeWindows = Array.from(window.active_windows.keys()); - // window.add(quad1, 1); - // window.set_current_time(12); - // window.add(quad2, 12); - // expect(activeWindows.length).toBe(2); - // window.update_watermark(22); - // expect(activeWindows.length).toBe(0); - // }); - test('should process late elements', () => { window.add(quad1, 6); window.add(quad2, 4); // Late element @@ -404,6 +390,11 @@ describe('CSPARQLWindow get quads from active windows', () => { }); }); +/** + * + * @param set + * @param window + */ function hasWindowInstance(set: Set, window: WindowInstance) { for (const elem of set) { if (elem.open === window.open && elem.close === window.close) { diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index cd2d4a5..dc2db8c 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -1,8 +1,8 @@ import { EventEmitter } from "events"; // @ts-ignore import { Quad } from 'n3'; -import { DataFactory } from "n3"; -const { namedNode, literal, defaultGraph, quad } = DataFactory; +import { Logger, LogLevel, LogDestination } from "../util/Logger"; +import * as LOG_CONFIG from "../config/log_config.json"; export enum ReportStrategy { NonEmptyContent, @@ -38,7 +38,7 @@ export class WindowInstance { * */ getDefinition() { - return "[" + this.open + "," + this.close + ")"; + return "[" + this.open + "," + this.close + ")" + " Triggered: " + this.has_triggered; } /** * @@ -108,6 +108,7 @@ export class CSPARQLWindow { t0: number; active_windows: Map; report: ReportStrategy; + logger: Logger; // Logger for the CSPARQL Window tick: Tick; emitter: EventEmitter; interval_id: NodeJS.Timeout; @@ -132,6 +133,8 @@ export class CSPARQLWindow { this.slide = slide; this.report = report; this.tick = tick; + const log_level: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; + this.logger = new Logger(log_level, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); this.time = start_time; this.current_watermark = start_time; this.t0 = start_time; @@ -181,10 +184,8 @@ export class CSPARQLWindow { this.buffer_late_event(e, t_e); return; } - const to_evict = this.process_event(e, t_e); this.evict_windows(to_evict); - } /** @@ -196,15 +197,17 @@ export class CSPARQLWindow { } /** - * + * * @param e * @param timestamp */ buffer_late_event(e: Quad, timestamp: number) { if (this.time - timestamp > this.max_delay) { + this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is out of the allowed delay [" + ${this.max_delay} + "]`, `CSPARQLWindow`); console.error("Late element [" + e + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); } else { + this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is being buffered for out of order processing`, `CSPARQLWindow`); console.warn("Late element [" + e + "] with timestamp [" + timestamp + "] is being buffered for out of order processing"); if (!this.late_buffer.has(timestamp)) { this.late_buffer.set(timestamp, new Set()); @@ -214,8 +217,8 @@ export class CSPARQLWindow { } /** - * - * @param toEvict + * Evict the windows that are out of the watermark. + * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. */ evict_windows(toEvict: Set) { for (const w of toEvict) { @@ -224,20 +227,26 @@ export class CSPARQLWindow { } } + /** + * Add the window instance to the pending triggers to be emitted. + * @param {number} t_e - The timestamp of the event to be processed. + */ add_window_instance_to_pending_triggers(t_e: number) { - let window_instance = this.get_window_instance(t_e); + const window_instance = this.get_window_instance(t_e); if (this.hasWindowInstance(this.pending_triggers, window_instance)) { return; } else { this.pending_triggers.add(window_instance); + console.log(`Size of the pending triggers: ${this.pending_triggers.size}`); + } } /** - * - * @param e - * @param t_e + * Process the event and update the watermark + * @param {Quad} e - The event to be processed of the form {subject, predicate, object, graph}. + * @param {number} t_e - The timestamp of the event. */ process_event(e: Quad, t_e: number) { const toEvict = new Set(); @@ -252,14 +261,15 @@ export class CSPARQLWindow { toEvict.add(w); } } + this.logger.info(`Event [" + ${e} + "] with timestamp [" + ${t_e} + "] is being processed`, `CSPARQLWindow`); this.update_watermark(t_e); this.add_window_instance_to_pending_triggers(t_e); return toEvict; } /** - * - * @param t_e + * Get the window instance for the given timestamp. + * @param {number} t_e - The timestamp for which the window instance is to be retrieved. */ get_window_instance(t_e: number) { const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; @@ -279,7 +289,7 @@ export class CSPARQLWindow { } /** - * + * */ evict_and_trigger_on_watermark() { // Evict windows that are out of the watermark and should be evicted. @@ -311,7 +321,7 @@ export class CSPARQLWindow { */ emit_on_trigger(t_e: number) { this.pending_triggers.forEach((window: WindowInstance) => { - let content = this.get_quads_from_active_windows(this.active_windows, window); + const content = this.get_quads_from_active_windows(this.active_windows, window); if (content) { let should_emit = false; if (this.report == ReportStrategy.OnWindowClose) { @@ -390,7 +400,8 @@ export class CSPARQLWindow { } /** - * + * Process the late elements that are out of order. + * The function is currently called periodically based on the slide of the window. */ process_late_elements() { this.late_buffer.forEach((elements: Set, timestamp: number) => { @@ -407,19 +418,28 @@ export class CSPARQLWindow { } /** - * - * @param t + * Set the current time to the given value. + * @param {number} t - The time to be set. */ set_current_time(t: number) { this.time = t; } + /** + * Set the watermark to the given value. + * @param {number} t - The watermark to be set. + */ set_current_watermark(t: number) { this.current_watermark = t; } + /** + * + * @param map + * @param target + */ get_quads_from_active_windows(map: Map, target: WindowInstance) { - for (let [key, value] of map.entries()) { + for (const [key, value] of map.entries()) { if (key.open === target.open && key.close === target.close && key.has_triggered === target.has_triggered) { return value; } @@ -427,6 +447,11 @@ export class CSPARQLWindow { return undefined; } + /** + * + * @param set + * @param window + */ hasWindowInstance(set: Set, window: WindowInstance) { for (const elem of set) { if (elem.open === window.open && elem.close === window.close) { @@ -435,6 +460,27 @@ export class CSPARQLWindow { } return false; } + + /** + * Get a string representation of the CSPARQLWindow definition. + */ + getCSPARQLWindowDefinition() { + let windowDefinitions = []; + for (const [window, quadContainer] of this.active_windows.entries()) { + windowDefinitions.push(window.getDefinition()); + } + return `CSPARQLWindow { + name: ${this.name}, + width: ${this.width}, + slide: ${this.slide}, + current_time: ${this.time}, + current_watermark: ${this.current_watermark}, + report_strategy: ${ReportStrategy[this.report]}, + tick: ${Tick[this.tick]}, + active_windows: [${windowDefinitions.join(", ")}] + }`; + } + } /** * diff --git a/src/rsp.test.ts b/src/rsp.test.ts index c638d03..f994de6 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -1,8 +1,8 @@ import { RDFStream, RSPEngine } from "./rsp"; +import { RSPQLParser } from "./rspql"; const N3 = require('n3'); - const { DataFactory } = N3; -const { namedNode, defaultGraph, quad } = DataFactory; +const { namedNode, defaultGraph, quad, literal } = DataFactory; /** * @@ -51,10 +51,10 @@ test('rsp_consumer_test', async () => { const stream = rspEngine.getStream("https://rsp.js/stream1"); const emitter = rspEngine.register(); const results = new Array(); + let count = 0; // @ts-ignore emitter.on('RStream', (object) => { - console.log("received results"); - + console.log(`received result ${object.bindings.toString()}`); results.push(object.bindings.toString()); }); @@ -66,9 +66,7 @@ test('rsp_consumer_test', async () => { const sleep = (ms) => new Promise(r => setTimeout(r, ms)); await sleep(2000); - expect(results.length).toBe(2 + 4 + 6 + 8); - console.log(results); }); test('rsp_multiple_same_window_test', async () => { const query = `PREFIX : @@ -185,7 +183,7 @@ test('rsp_static_plus_window_test', async () => { const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { - console.log("received results"); + console.log(`received result: ${object.bindings.toString()}`); results.push(object.bindings.toString()); }); if (stream1) { @@ -262,7 +260,7 @@ test('test setting the max delay for out of order events', async () => { const rsp_engine = new RSPEngine(query); expect(rsp_engine.max_delay).toBe(0); - let rsp_engine_2 = new RSPEngine(query, 1000); + const rsp_engine_2 = new RSPEngine(query, 1000); expect(rsp_engine_2.max_delay).toBe(1000); }); @@ -283,7 +281,7 @@ test('test out of order processing with different delays', async () => { const emitter = rsp_engine.register(); const results = new Array(); - const event = quad( + const event = quad( namedNode(`https://rsp.js/test_subject`), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), @@ -310,7 +308,7 @@ test('test out of order processing with different delays', async () => { }); -test('test ooo event processing with varying delay settings', async() => { +test('test ooo event processing with varying delay settings', async () => { const query = ` PREFIX : REGISTER RStream AS @@ -321,12 +319,13 @@ test('test ooo event processing with varying delay settings', async() => { } `; + const rsp_engine = new RSPEngine(query, 1000); const stream = rsp_engine.getStream("https://rsp.js/stream1"); const emitter = rsp_engine.register(); const results = new Array(); - const event = quad( + const event = quad( namedNode(`https://rsp.js/test_subject`), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), @@ -350,4 +349,102 @@ test('test ooo event processing with varying delay settings', async() => { expect(results.length).toBeGreaterThan(0); console.log(results); -}) \ No newline at end of file +}) + +describe.skip('test the rsp engine with out of order processing with various data frequency', () => { + const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + const location_two = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-y/"; + const location_three = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-z/"; + + const query = ` + PREFIX : + PREFIX saref: + PREFIX dahccsensors: + PREFIX func: + REGISTER RStream AS + SELECT ?o + + FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 6000 STEP 2000] + + WHERE { + WINDOW :w1 { + ?s saref:hasValue ?o . + ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + WINDOW :w2 { + ?s saref:hasValue ?o2 . + ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + WINDOW :w3 { + ?s saref:hasValue ?o3 . + ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + } + `; + + test('testing RSP Engine with 4Hz data frequency', async () => { + jest.setTimeout(100000); + const parser = new RSPQLParser(); + const parsed_query = parser.parse(query); + const rsp_engine = new RSPEngine(query, 1000); + let emitter = rsp_engine.register(); + const results = new Array(); + + const stream_x = await rsp_engine.getStream(location_one); + const stream_y = await rsp_engine.getStream(location_two); + const stream_z = await rsp_engine.getStream(location_three); + + if (stream_x && stream_y && stream_z) { + const rdf_streams = [stream_x, stream_y, stream_z]; + generate_dummy_data(500, rdf_streams, 4); + } + + emitter.on('RStream', (object: any) => { + console.log(object.bindings.toString()); + results.push(object.bindings.toString()); + }); + + await sleep(500000); + console.log(results); + + }); + +}); + +async function generate_dummy_data(number_of_events: number, rdf_streams: RDFStream[], frequency: number) { + let events_generated = 0; + const sleep_interval = 1000 / frequency; + + while (events_generated < number_of_events) { + rdf_streams.forEach((stream: any) => { + if (events_generated < number_of_events) { + const stream_element = quad( + namedNode('https://rsp.js/test_subject_' + events_generated), + namedNode('https://saref.etsi.org/core/hasValue'), + literal(`${Math.random() * 10}`, namedNode('http://www.w3.org/2001/XMLSchema#integer')), + defaultGraph(), + ); + + const stream_element_two = quad( + namedNode('https://rsp.js/test_subject_' + events_generated), + namedNode('https://saref.etsi.org/core/relatesToProperty'), + namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), + defaultGraph(), + ); + + const timestamp = Date.now(); + stream.add(stream_element, timestamp); + stream.add(stream_element_two, timestamp); + events_generated = events_generated + 1; + } + }); + + await sleep(sleep_interval); + } +} + +function sleep(ms: number) { + return new Promise(resolve => setTimeout(resolve, ms)); +} \ No newline at end of file diff --git a/src/rsp.ts b/src/rsp.ts index 3c4ebbe..1c63760 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -5,7 +5,7 @@ import * as LOG_CONFIG from "./config/log_config.json"; import { LogDestination, LogLevel, Logger } from "./util/Logger"; const N3 = require('n3'); const { DataFactory } = N3; -const { namedNode, literal, defaultGraph, quad } = DataFactory; +const { namedNode } = DataFactory; // @ts-ignore import { Quad } from 'n3'; import { RSPQLParser, WindowDefinition } from "./rspql"; @@ -17,16 +17,17 @@ export type binding_with_timestamp = { } /** - * + * RDF Stream Class to represent the stream of RDF Data. + * It emits the data to the CSPARQL Window for processing. */ export class RDFStream { name: string; emitter: EventEmitter; /** - * - * @param name - * @param window + * Constructor for the RDFStream class. + * @param {string} name - The name of the stream to be created. + * @param {CSPARQLWindow} window - The CSPARQL Window to which the stream is to be processed and emitted by the S2R Operator. */ constructor(name: string, window: CSPARQLWindow) { this.name = name; @@ -41,9 +42,9 @@ export class RDFStream { } /** - * - * @param event - * @param ts + * Adds the event to the RDF Stream to be processed by the RSP Engine. + * @param {Set} event - The event to be added to the stream. The event is a set of quads of the form {subject, predicate, object, graph}. + * @param {number} ts - The timestamp of the event. */ add(event: Set, ts: number) { this.emitter.emit('data', new QuadContainer(event, ts)); @@ -51,7 +52,8 @@ export class RDFStream { } /** - * + * RSPEngine Class to represent the RSP Engine. + * It contains the windows and streams of the RSP Engine. */ export class RSPEngine { windows: Array; @@ -61,8 +63,10 @@ export class RSPEngine { private logger: Logger; /** - * - * @param query + * Constructor for the RSPEngine class. + * @param {string} query - The query to be executed by the RSP Engine. + * @param {number} max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. + * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. */ constructor(query: string, max_delay?: number) { this.windows = new Array(); @@ -78,7 +82,7 @@ export class RSPEngine { const parser = new RSPQLParser(); const parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { - const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay); + const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay); this.windows.push(windowImpl); const stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); @@ -86,9 +90,9 @@ export class RSPEngine { this.r2r = new R2ROperator(parsed_query.sparql); } - /** - * + * Register the RSP Engine to start processing the data. + * @returns {any} - The event emitter to emit the data to the RSP Engine. */ register() { const EventEmitter = require('events').EventEmitter; @@ -120,7 +124,6 @@ export class RSPEngine { timestamp_to: window.t0 + window.slide } window.t0 += window.slide; - this.logger.info(`Value ${object_with_timestamp}`, `RSPEngine`); emitter.emit("RStream", object_with_timestamp); }); bindingsStream.on('end', () => { @@ -135,23 +138,25 @@ export class RSPEngine { } /** - * - * @param stream_name + * Get the stream by the stream name. + * @param {string} stream_name - The name of the stream to be fetched. + * @returns {RDFStream | undefined} - The stream with the given name. */ getStream(stream_name: string) { return this.streams.get(stream_name); } /** - * - * @param static_data + * Add static data to the RSP Engine. + * @param {Quad} static_data - The static data to be added to the RSP Engine. */ addStaticData(static_data: Quad) { this.r2r.addStaticData(static_data); } /** - * + * Get all the streams of the RSP Engine. + * @returns {string[]} - The list of all the streams in the RSP Engine. */ get_all_streams() { const streams: string[] = []; diff --git a/src/rspql.ts b/src/rspql.ts index 0b76c9f..7ddda5e 100644 --- a/src/rspql.ts +++ b/src/rspql.ts @@ -1,12 +1,12 @@ -/** - * +/** + * Parser for RSP-QL queries to extract the SPARQL query and the window definitions. */ export class ParsedQuery { sparql: string; r2s: R2S; s2r: Array; /** - * + * Constructor to initialize the ParsedQuery object with default values. */ constructor() { this.sparql = "Select * WHERE{?s ?p ?o}"; @@ -16,44 +16,51 @@ export class ParsedQuery { } /** - * - * @param sparql + * Set the SPARQL query for the ParsedQuery object. + * @param {string} sparql - The SPARQL query to be set. */ set_sparql(sparql: string) { this.sparql = sparql; } /** - * - * @param r2s + * Set the R2S operator for the ParsedQuery object. + * @param {R2S} r2s - The R2S operator to be set. */ set_r2s(r2s: R2S) { this.r2s = r2s; } /** - * - * @param s2r + * Add a S2R window definition to the ParsedQuery object. + * @param {WindowDefinition} s2r - The window definition to be added. */ add_s2r(s2r: WindowDefinition) { this.s2r.push(s2r); } } +/** + * Interface for the Window Definition in the RSP-QL query. + */ export type WindowDefinition = { window_name: string, stream_name: string, width: number, slide: number } +/** + * Interface for the R2S operator in the RSP-QL query. + */ type R2S = { operator: "RStream" | "IStream" | "DStream", name: string } /** - * + * RSP-QL Parser Class to parse the RSP-QL query and extract the SPARQL query and the window definitions. */ export class RSPQLParser { /** - * - * @param query + * Parse the RSP-QL query to extract the SPARQL query and the window definitions. + * @param {string} query - The RSP-QL query to be parsed. + * @returns {ParsedQuery} - The parsed query object containing the SPARQL query and the window definitions. */ parse(query: string): ParsedQuery { const parsed = new ParsedQuery(); @@ -102,9 +109,10 @@ export class RSPQLParser { return parsed; } /** - * - * @param prefixedIri - * @param mapper + * Unwrap the prefixed IRI to the full IRI using the prefix mapper. + * @param {string} prefixedIri - The prefixed IRI to be unwrapped. + * @param {Map} mapper - The prefix mapper to be used for unwrapping. + * @returns {string} - The unwrapped full IRI. */ unwrap(prefixedIri: string, mapper: Map) { if (prefixedIri.trim().startsWith("<")) { diff --git a/src/util/IntervalManager.ts b/src/util/IntervalManager.ts new file mode 100644 index 0000000..7faf6da --- /dev/null +++ b/src/util/IntervalManager.ts @@ -0,0 +1,20 @@ +import { CSPARQLWindow } from "../operators/s2r"; + +export class IntervalManager { + + public window_instance: CSPARQLWindow; + + constructor(window_instance: CSPARQLWindow) { + this.window_instance = window_instance; + } + + clear_interval() { + if (this.window_instance.interval_id) { + clearInterval(this.window_instance.interval_id); + console.log(`Interval cleared for window ${this.window_instance.name} with id ${this.window_instance.interval_id}`); + } + else { + console.log(`No interval to clear for window ${this.window_instance.name}`); + } + } +} \ No newline at end of file diff --git a/src/util/Logger.ts b/src/util/Logger.ts index 0e8efbf..d78b88b 100644 --- a/src/util/Logger.ts +++ b/src/util/Logger.ts @@ -1,5 +1,5 @@ import * as fs from 'fs'; - +/* eslint-disable no-unused-vars */ export enum LogLevel { TRACE, DEBUG, @@ -17,9 +17,10 @@ export enum LogDestination { CONSOLE, FILE, } +/* eslint-enable no-unused-vars */ /** - * + * Logger class to log messages based on the log level, loggable classes, and log destination. */ export class Logger { private log_level: LogLevel; @@ -27,10 +28,10 @@ export class Logger { private log_destination: any; /** - * - * @param logLevel - * @param loggableClasses - * @param logDestination + * Constructor for the Logger class. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + * @param {any} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. */ constructor(logLevel: LogLevel, loggableClasses: string[], logDestination: any) { this.log_level = logLevel; @@ -41,43 +42,39 @@ export class Logger { } /** - * - * @param logLevel + * Set the log level for the logger. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. */ setLogLevel(logLevel: LogLevel) { this.log_level = logLevel; } /** - * - * @param loggableClasses + * Set the loggable classes for the logger. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. */ setLoggableClasses(loggableClasses: string[]) { this.loggable_classes = loggableClasses; } /** - * - * @param logDestination + * Set the log destination for the logger. + * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. */ setLogDestination(logDestination: LogDestination) { this.log_destination = logDestination; } /** - * - * @param level - * @param message - * @param className + * Log the message based on the log level, loggable classes, and log destination. + * @param {LogLevel} level - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ log(level: LogLevel, message: string, className: string) { - console.log(`Logging level: ${level}`); - console.log(`this.log_level: ${this.log_level}`); - if (level >= this.log_level && this.loggable_classes.includes(className)){ const logPrefix = `[${LogLevel[level]}] [${className}]`; const logMessage = `${Date.now()} ${logPrefix} ${message}`; - console.log(`Logging destination: ${this.log_destination}`); switch (this.log_destination) { case 'CONSOLE': console.log(logMessage); @@ -95,108 +92,110 @@ export class Logger { } } - /** - * - * @param message - * @param className + /** + * Log the message with the TRACE log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ trace(message: string, className: string) { this.log(LogLevel.TRACE, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the DEBUG log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ debug(message: string, className: string) { this.log(LogLevel.DEBUG, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the INFO log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ info(message: string, className: string) { this.log(LogLevel.INFO, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the CONFIG log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ config(message: string, className: string) { this.log(LogLevel.CONFIG, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the WARN log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ warn(message: string, className: string) { this.log(LogLevel.WARN, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the ERROR log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ error(message: string, className: string) { this.log(LogLevel.ERROR, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the FATAL log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ fatal(message: string, className: string) { this.log(LogLevel.FATAL, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the SEVERE log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ severe(message: string, className: string) { this.log(LogLevel.SEVERE, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the AUDIT log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ audit(message: string, className: string) { this.log(LogLevel.AUDIT, message, className); } - /** - * - * @param message - * @param className + /** + * Log the message with the STATS log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. */ stats(message: string, className: string) { this.log(LogLevel.STATS, message, className); } /** - * - * @param logLevel - * @param loggableClasses - * @param logDestination + * Get the logger with the specified log level, loggable classes, and log destination. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. + * @returns {Logger} - The logger with the specified log level, loggable classes, and log destination. */ static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination) { return new Logger(logLevel, loggableClasses, logDestination); } /** - * + * Get the logger with the default log level, loggable classes, and log destination. + * @returns {Logger} - The logger with the default log level, loggable classes, and log destination. */ static getLoggerWithDefaults() { return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); From a45b097e9cef35f87b51be0ddd08701e7b5e8738 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 9 Jul 2024 14:45:24 +0200 Subject: [PATCH 14/50] refactor: Improve CSPARQLWindow class and add watermarking support This commit refactors the CSPARQLWindow class to improve its functionality and readability. It also adds support for watermarking, allowing for better handling of out-of-order events. The changes include: - Improved window management and event processing - Added methods for checking if an event is late or not - Implemented buffering of late events for out-of-order processing - Eviction and triggering of windows based on the watermark - Updated tests to cover the new functionality --- src/operators/s2r.ts | 78 +++++++++++++++++++++++++------------------- 1 file changed, 44 insertions(+), 34 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index dc2db8c..8d73d02 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -99,33 +99,35 @@ export class QuadContainer { } /** - * + * CSPARQL Window class that implements the windowing mechanism for the RSP Engine. + * The class is responsible for managing the windows, processing the events, and emitting the triggers based on the report strategy. + * The class also handles the out-of-order processing of the events based on the maximum delay allowed for the events and the watermark. */ export class CSPARQLWindow { - width: number; - slide: number; - time: number; - t0: number; - active_windows: Map; - report: ReportStrategy; + width: number; // The width of the window + slide: number; // The slide of the window + time: number; // The current time of the window + t0: number; // The start time of the window + active_windows: Map; // The active windows in the window and the content of the window + report: ReportStrategy; // The report strategy for the window logger: Logger; // Logger for the CSPARQL Window - tick: Tick; - emitter: EventEmitter; - interval_id: NodeJS.Timeout; - name: string; + tick: Tick; // The tick of the window + emitter: EventEmitter; // The event emitter for the window + interval_id: NodeJS.Timeout; // The interval id for the out-of-order processing of the late elements + name: string; // The name of the window private current_watermark: number; // To track the current watermark of the window public late_buffer: Map>; // Buffer for out-of-order late elements public max_delay: number; // The maximum delay allowed for a observation to be considered in the window public pending_triggers: Set; // Tracking windows that have pending triggers /** * - * @param name - * @param width - * @param slide - * @param report - * @param tick - * @param start_time - * @param max_delay + * @param {string} name - The name of the CSPARQL Window. + * @param {number} width - The width of the window. + * @param {number} slide - The slide of the window. + * @param {ReportStrategy} report - The report strategy for the window. + * @param {Tick} tick - The tick of the window. + * @param {number} start_time - The start time of the window. + * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. */ constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { this.name = name; @@ -146,8 +148,8 @@ export class CSPARQLWindow { this.interval_id = setInterval(() => { this.process_late_elements() }, this.slide); } /** - * - * @param timestamp + * Get the content of the window at the given timestamp if it exists, else return undefined. + * @param {number} timestamp - The timestamp for which the content of the window is to be retrieved. */ getContent(timestamp: number): QuadContainer | undefined { let max_window = null; @@ -168,9 +170,9 @@ export class CSPARQLWindow { } /** - * - * @param e - * @param timestamp + * Add the event to the window at the given timestamp and checks if the event is late or not. + * @param {Quad} e - The event to be added to the window. + * @param {number} timestamp - The timestamp of the event. */ add(e: Quad, timestamp: number) { console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); @@ -189,17 +191,17 @@ export class CSPARQLWindow { } /** - * - * @param timestamp + * Check if the event is late or not based on the timestamp of the event and comparing it to the current time of the window. + * @param {number} timestamp - The timestamp of the event. */ if_event_late(timestamp: number) { return this.time > timestamp; } /** - * - * @param e - * @param timestamp + * Buffer the late event for out-of-order processing based on the maximum delay allowed for the events. + * @param {Quad} e - The event to be buffered. + * @param {number} timestamp - The timestamp of the event. */ buffer_late_event(e: Quad, timestamp: number) { if (this.time - timestamp > this.max_delay) { @@ -213,6 +215,7 @@ export class CSPARQLWindow { this.late_buffer.set(timestamp, new Set()); } this.late_buffer.get(timestamp)?.add(e); + this.logger.info(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`, `CSPARQLWindow`); } } @@ -288,8 +291,8 @@ export class CSPARQLWindow { } } - /** - * + /** + * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. */ evict_and_trigger_on_watermark() { // Evict windows that are out of the watermark and should be evicted. @@ -332,16 +335,22 @@ export class CSPARQLWindow { else if (this.report == ReportStrategy.OnContentChange) { should_emit = true; } + else { + should_emit = false; + } if (should_emit) { this.time = t_e; if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { window.has_triggered = true; - console.log("Window [" + window.open + "," + window.close + ") triggers. Content: " + content); + this.logger.info(`Window ${window.getDefinition()} triggers with Content: " + ${content}`, `CSPARQLWindow`); this.emitter.emit('RStream', content); } this.pending_triggers.delete(window); } + else { + console.error("Window [" + window.open + "," + window.close + ") should not trigger"); + } } }) } @@ -404,6 +413,7 @@ export class CSPARQLWindow { * The function is currently called periodically based on the slide of the window. */ process_late_elements() { + this.logger.info(`Processing late elements for the window with the late_buffer size ${this.late_buffer.size}`, `CSPARQLWindow`) this.late_buffer.forEach((elements: Set, timestamp: number) => { elements.forEach((element: Quad) => { const to_evict = new Set(); @@ -434,9 +444,9 @@ export class CSPARQLWindow { } /** - * - * @param map - * @param target + * Get the quads from the active windows based on the given window instance. The function is used to get the content of the window based on the window instance. + * @param {Map} map - The map of the active windows. + * @param {WindowInstance} target - The window instance for which the content is to be retrieved. */ get_quads_from_active_windows(map: Map, target: WindowInstance) { for (const [key, value] of map.entries()) { From ab20f38de3da3467a83d2ff91cf33df380c59885 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 9 Jul 2024 14:57:33 +0200 Subject: [PATCH 15/50] refactor: Improve CSPARQLWindow class and add lazy loading support --- src/operators/s2r.ts | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 8d73d02..1b52a90 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -342,9 +342,14 @@ export class CSPARQLWindow { if (should_emit) { this.time = t_e; if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { - window.has_triggered = true; - this.logger.info(`Window ${window.getDefinition()} triggers with Content: " + ${content}`, `CSPARQLWindow`); - this.emitter.emit('RStream', content); + if (window.has_triggered) { + this.logger.info(`Window ${window.getDefinition()} is already triggered so not triggering it again.`, `CSPARQLWindow`); + } + else { + this.logger.info(`Window ${window.getDefinition()} triggers with Content: " + ${content}`, `CSPARQLWindow`); + this.emitter.emit('RStream', content); + window.has_triggered = true; + } } this.pending_triggers.delete(window); } From 5542b69ae88a034d122096663526cb1b450906ac Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 9 Jul 2024 15:35:41 +0200 Subject: [PATCH 16/50] refactor: Improve CSPARQLWindow class and add support for max delay and late element processing This commit refactors the CSPARQLWindow class to improve its functionality and readability. It also adds support for setting the maximum delay for out-of-order events and processing late elements. The changes include: - Updated constructor to accept options object for max delay and time to trigger processing of late elements - Modified RSPEngine constructor to pass the options object to CSPARQLWindow - Updated tests to cover the new functionality --- src/operators/s2r.test.ts | 20 ++++++++++---------- src/operators/s2r.ts | 6 ++++-- src/rsp.test.ts | 15 ++++++++++++--- src/rsp.ts | 14 ++++++++++---- 4 files changed, 36 insertions(+), 19 deletions(-) diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index f01616d..392e784 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -57,12 +57,12 @@ describe('CSPARQLWindow', () => { defaultGraph(), ); - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); csparqlWindow.add(quad1, 0); }); test('test_scope', () => { - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); csparqlWindow.scope(4); const num_active_windows = csparqlWindow.active_windows.size; @@ -80,7 +80,7 @@ describe('CSPARQLWindow', () => { }); test('test_evictions', () => { - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); generate_data(10, csparqlWindow); @@ -91,7 +91,7 @@ describe('CSPARQLWindow', () => { test('test_stream_consumer', () => { const recevied_data = new Array(); const received_elementes = new Array; - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); // register window consumer csparqlWindow.subscribe('RStream', function (data: QuadContainer) { console.log('Foo raised, Args:', data); @@ -111,7 +111,7 @@ describe('CSPARQLWindow', () => { test('test_content_get', () => { const recevied_data = new Array(); const received_elementes = new Array; - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); // generate some data generate_data(10, csparqlWindow); @@ -136,7 +136,7 @@ describe('CSPARQLWindow OOO', () => { const quad2 = quad(DataFactory.blankNode(), DataFactory.namedNode('predicate'), DataFactory.literal('object2')); beforeEach(() => { - window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay); + window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay, 1000); }); afterEach(() => { @@ -227,7 +227,7 @@ describe('CSPARQLWindow OOO', () => { }); test('should trigger on window change', (done) => { - const report_window = new CSPARQLWindow('reportWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay); + const report_window = new CSPARQLWindow('reportWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay, 1000); const callback = jest.fn((data: QuadContainer) => { console.log('Callback called'); expect(data.len()).toBe(1); @@ -258,7 +258,7 @@ describe('CSPARQL Window Watermark Test', () => { beforeEach(() => { quad1 = {} as Quad - csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1000); window1 = new WindowInstance(0, 10); window2 = new WindowInstance(5, 15); quadContainer1 = new QuadContainer(new Set([quad1]), 5); @@ -304,7 +304,7 @@ describe('CSPARQLWindow emit_on_trigger', () => { beforeEach(() => { quad1 = {} as Quad; - csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1000); window1 = new WindowInstance(0, 10); quadContainer1 = new QuadContainer(new Set([quad1]), 5); csparqlWindow.active_windows.set(window1, quadContainer1); @@ -357,7 +357,7 @@ describe('CSPARQLWindow get quads from active windows', () => { beforeEach(() => { quad1 = {} as Quad; - csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1000); window1 = new WindowInstance(0, 10); quadContainer1 = new QuadContainer(new Set([quad1]), 9); window2 = new WindowInstance(5, 15); diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 1b52a90..0ca6e05 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -119,6 +119,7 @@ export class CSPARQLWindow { public late_buffer: Map>; // Buffer for out-of-order late elements public max_delay: number; // The maximum delay allowed for a observation to be considered in the window public pending_triggers: Set; // Tracking windows that have pending triggers + public time_to_trigger_processing_late_elements: number; // The time to trigger the processing of the late elements /** * * @param {string} name - The name of the CSPARQL Window. @@ -129,12 +130,13 @@ export class CSPARQLWindow { * @param {number} start_time - The start time of the window. * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. */ - constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { + constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number, time_to_trigger_processing_late_elements: number) { this.name = name; this.width = width; this.slide = slide; this.report = report; this.tick = tick; + this.time_to_trigger_processing_late_elements = time_to_trigger_processing_late_elements; const log_level: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; this.logger = new Logger(log_level, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); this.time = start_time; @@ -145,7 +147,7 @@ export class CSPARQLWindow { this.max_delay = max_delay; this.pending_triggers = new Set(); this.late_buffer = new Map>(); - this.interval_id = setInterval(() => { this.process_late_elements() }, this.slide); + this.interval_id = setInterval(() => { this.process_late_elements() }, time_to_trigger_processing_late_elements); } /** * Get the content of the window at the given timestamp if it exists, else return undefined. diff --git a/src/rsp.test.ts b/src/rsp.test.ts index f994de6..f978252 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -260,7 +260,10 @@ test('test setting the max delay for out of order events', async () => { const rsp_engine = new RSPEngine(query); expect(rsp_engine.max_delay).toBe(0); - const rsp_engine_2 = new RSPEngine(query, 1000); + const rsp_engine_2 = new RSPEngine(query, { + max_delay: 1000, + time_to_trigger_processing_late_elements: 60000 + }); expect(rsp_engine_2.max_delay).toBe(1000); }); @@ -320,7 +323,10 @@ test('test ooo event processing with varying delay settings', async () => { `; - const rsp_engine = new RSPEngine(query, 1000); + const rsp_engine = new RSPEngine(query, { + max_delay: 1000, + time_to_trigger_processing_late_elements: 1000 + }); const stream = rsp_engine.getStream("https://rsp.js/stream1"); const emitter = rsp_engine.register(); const results = new Array(); @@ -388,7 +394,10 @@ describe.skip('test the rsp engine with out of order processing with various dat jest.setTimeout(100000); const parser = new RSPQLParser(); const parsed_query = parser.parse(query); - const rsp_engine = new RSPEngine(query, 1000); + const rsp_engine = new RSPEngine(query, { + max_delay: 1000, + time_to_trigger_processing_late_elements: 60000 + }); let emitter = rsp_engine.register(); const results = new Array(); diff --git a/src/rsp.ts b/src/rsp.ts index 1c63760..4152ec4 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -59,6 +59,7 @@ export class RSPEngine { windows: Array; streams: Map; public max_delay: number; + public time_to_trigger_processing_late_elements: number; private r2r: R2ROperator; private logger: Logger; @@ -68,13 +69,18 @@ export class RSPEngine { * @param {number} max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. */ - constructor(query: string, max_delay?: number) { + constructor(query: string, opts?: { + max_delay?: number + time_to_trigger_processing_late_elements?: number + }) { this.windows = new Array(); - if (max_delay) { - this.max_delay = max_delay; + if (opts) { + this.max_delay = opts.max_delay ? opts.max_delay : 0; + this.time_to_trigger_processing_late_elements = opts.time_to_trigger_processing_late_elements ? opts.time_to_trigger_processing_late_elements : 0; } else { this.max_delay = 0; + this.time_to_trigger_processing_late_elements = 60000; } this.streams = new Map(); const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; @@ -82,7 +88,7 @@ export class RSPEngine { const parser = new RSPQLParser(); const parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { - const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay); + const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay, this.time_to_trigger_processing_late_elements); this.windows.push(windowImpl); const stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); From d1e592fa99351d8d6ec309e9eba75cd7d5bf3b44 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 9 Jul 2024 16:12:41 +0200 Subject: [PATCH 17/50] refactor: Improve CSPARQLWindow class and add support for max delay and late element processing --- src/operators/s2r.ts | 32 ++++++++++++++++++-------------- src/rsp.test.ts | 6 ++++++ 2 files changed, 24 insertions(+), 14 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 0ca6e05..8a71a28 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -297,6 +297,7 @@ export class CSPARQLWindow { * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. */ evict_and_trigger_on_watermark() { + // Evict windows that are out of the watermark and should be evicted. const to_evict = new Set(); // Checking all of the currently active windows. @@ -308,8 +309,7 @@ export class CSPARQLWindow { to_evict.add(window); } }); - - + this.logger.info(`Current watermark: ${this.current_watermark} to emit triggers for the window`, `CSPARQLWindow`); // Emit triggers for the windows that are within the watermark, if any. this.emit_on_trigger(this.current_watermark); @@ -348,9 +348,9 @@ export class CSPARQLWindow { this.logger.info(`Window ${window.getDefinition()} is already triggered so not triggering it again.`, `CSPARQLWindow`); } else { + window.has_triggered = true; this.logger.info(`Window ${window.getDefinition()} triggers with Content: " + ${content}`, `CSPARQLWindow`); this.emitter.emit('RStream', content); - window.has_triggered = true; } } this.pending_triggers.delete(window); @@ -420,18 +420,22 @@ export class CSPARQLWindow { * The function is currently called periodically based on the slide of the window. */ process_late_elements() { - this.logger.info(`Processing late elements for the window with the late_buffer size ${this.late_buffer.size}`, `CSPARQLWindow`) - this.late_buffer.forEach((elements: Set, timestamp: number) => { - elements.forEach((element: Quad) => { - const to_evict = new Set(); - this.process_event(element, timestamp); - for (const w of to_evict) { - console.debug("Evicting Late [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } + if (this.late_buffer.size == 0) { + return; + } else { + this.logger.info(`Processing late elements for the window with the late_buffer size ${this.late_buffer.size}`, `CSPARQLWindow`) + this.late_buffer.forEach((elements: Set, timestamp: number) => { + elements.forEach((element: Quad) => { + const to_evict = new Set(); + this.process_event(element, timestamp); + for (const w of to_evict) { + console.debug("Evicting Late [" + w.open + "," + w.close + ")"); + this.active_windows.delete(w); + } + }); }); - }); - this.late_buffer.clear(); + this.late_buffer.clear(); + } } /** diff --git a/src/rsp.test.ts b/src/rsp.test.ts index f978252..de69aaf 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -348,6 +348,12 @@ test('test ooo event processing with varying delay settings', async () => { stream.add(event, 1); stream.add(event, 2); stream.add(event, 4); + stream.add(event, 5); + stream.add(event, 6); + stream.add(event, 7); + stream.add(event, 8); + stream.add(event, 9); + stream.add(event, 7); } const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); From 89205999e4cb4bb2643d843a0ddd99cbb27a1b98 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 9 Jul 2024 16:44:35 +0200 Subject: [PATCH 18/50] refactor: Improve CSPARQLWindow class and add support for max delay and late element processing --- src/operators/s2r.ts | 6 ++++++ src/rsp.ts | 4 ++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 8a71a28..5bc541b 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -178,6 +178,7 @@ export class CSPARQLWindow { */ add(e: Quad, timestamp: number) { console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); + this.time = timestamp; const t_e = timestamp; if (timestamp > this.time) { this.time = timestamp; @@ -289,8 +290,13 @@ export class CSPARQLWindow { update_watermark(new_time: number) { if (new_time > this.current_watermark) { this.current_watermark = new_time; + this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); this.evict_and_trigger_on_watermark(); } + else { + console.error("Watermark is not increasing"); + this.logger.info(`Watermark is not increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); + } } /** diff --git a/src/rsp.ts b/src/rsp.ts index 4152ec4..02fe3ad 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -120,7 +120,7 @@ export class RSPEngine { } } } - this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); const bindingsStream = await this.r2r.execute(data); bindingsStream.on('data', (binding: any) => { @@ -133,7 +133,7 @@ export class RSPEngine { emitter.emit("RStream", object_with_timestamp); }); bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); }); await bindingsStream; } From dfaf98467777bf0736780e63a1b23e656265ceb3 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 10 Jul 2024 14:05:43 +0200 Subject: [PATCH 19/50] refactor: Improve CSPARQLWindow class and add support for max delay and late element processing --- package-lock.json | 47 ++++++++++-- package.json | 1 + src/operators/r2r.test.ts | 60 +++++++++++++++ src/operators/r2r.ts | 1 - src/operators/s2r.test.ts | 26 +++---- src/operators/s2r.ts | 144 ++++++++++++++++++++++-------------- src/rsp.test.ts | 36 +++++---- src/rsp.ts | 5 +- src/util/IntervalManager.ts | 10 +++ 9 files changed, 234 insertions(+), 96 deletions(-) diff --git a/package-lock.json b/package-lock.json index 741a1ba..fd21581 100644 --- a/package-lock.json +++ b/package-lock.json @@ -20,6 +20,7 @@ }, "devDependencies": { "@types/jest": "^29.2.4", + "@types/node": "^20.14.10", "jest": "^29.3.1", "supertest": "^6.3.3", "ts-jest": "^29.0.3", @@ -3429,9 +3430,12 @@ } }, "node_modules/@types/node": { - "version": "18.16.1", - "resolved": "https://registry.npmjs.org/@types/node/-/node-18.16.1.tgz", - "integrity": "sha512-DZxSZWXxFfOlx7k7Rv4LAyiMroaxa3Ly/7OOzZO8cBNho0YzAi4qlbrx8W27JGqG57IgR/6J7r+nOJWw6kcvZA==" + "version": "20.14.10", + "resolved": "https://registry.npmjs.org/@types/node/-/node-20.14.10.tgz", + "integrity": "sha512-MdiXf+nDuMvY0gJKxyfZ7/6UFsETO7mGKF54MVD/ekJS6HdFtpZFBgrh6Pseu64XTb2MLyFPlbW6hj8HYRQNOQ==", + "dependencies": { + "undici-types": "~5.26.4" + } }, "node_modules/@types/prettier": { "version": "2.7.2", @@ -7109,6 +7113,14 @@ "jsonld-context-parse": "bin/jsonld-context-parse.js" } }, + "node_modules/jsonld-context-parser/node_modules/@types/node": { + "version": "18.19.39", + "resolved": "https://registry.npmjs.org/@types/node/-/node-18.19.39.tgz", + "integrity": "sha512-nPwTRDKUctxw3di5b4TfT3I0sWDiWoPQCZjXhvdkINntwr8lcoVCKsTgnXeRubKIlfnV+eN/HYk6Jb40tbcEAQ==", + "dependencies": { + "undici-types": "~5.26.4" + } + }, "node_modules/jsonld-streaming-parser": { "version": "3.2.0", "resolved": "https://registry.npmjs.org/jsonld-streaming-parser/-/jsonld-streaming-parser-3.2.0.tgz", @@ -9043,6 +9055,11 @@ "node": ">=4.2.0" } }, + "node_modules/undici-types": { + "version": "5.26.5", + "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz", + "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==" + }, "node_modules/universalify": { "version": "0.1.2", "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz", @@ -12463,9 +12480,12 @@ } }, "@types/node": { - "version": "18.16.1", - "resolved": "https://registry.npmjs.org/@types/node/-/node-18.16.1.tgz", - "integrity": "sha512-DZxSZWXxFfOlx7k7Rv4LAyiMroaxa3Ly/7OOzZO8cBNho0YzAi4qlbrx8W27JGqG57IgR/6J7r+nOJWw6kcvZA==" + "version": "20.14.10", + "resolved": "https://registry.npmjs.org/@types/node/-/node-20.14.10.tgz", + "integrity": "sha512-MdiXf+nDuMvY0gJKxyfZ7/6UFsETO7mGKF54MVD/ekJS6HdFtpZFBgrh6Pseu64XTb2MLyFPlbW6hj8HYRQNOQ==", + "requires": { + "undici-types": "~5.26.4" + } }, "@types/prettier": { "version": "2.7.2", @@ -15276,6 +15296,16 @@ "cross-fetch": "^3.0.6", "http-link-header": "^1.0.2", "relative-to-absolute-iri": "^1.0.5" + }, + "dependencies": { + "@types/node": { + "version": "18.19.39", + "resolved": "https://registry.npmjs.org/@types/node/-/node-18.19.39.tgz", + "integrity": "sha512-nPwTRDKUctxw3di5b4TfT3I0sWDiWoPQCZjXhvdkINntwr8lcoVCKsTgnXeRubKIlfnV+eN/HYk6Jb40tbcEAQ==", + "requires": { + "undici-types": "~5.26.4" + } + } } }, "jsonld-streaming-parser": { @@ -16762,6 +16792,11 @@ "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz", "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==" }, + "undici-types": { + "version": "5.26.5", + "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz", + "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==" + }, "universalify": { "version": "0.1.2", "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz", diff --git a/package.json b/package.json index bd77d3d..f86a175 100644 --- a/package.json +++ b/package.json @@ -24,6 +24,7 @@ "license": "MIT", "devDependencies": { "@types/jest": "^29.2.4", + "@types/node": "^20.14.10", "jest": "^29.3.1", "supertest": "^6.3.3", "ts-jest": "^29.0.3", diff --git a/src/operators/r2r.test.ts b/src/operators/r2r.test.ts index 775bd90..d4a59f8 100644 --- a/src/operators/r2r.test.ts +++ b/src/operators/r2r.test.ts @@ -6,6 +6,7 @@ const { namedNode, literal, defaultGraph, quad } = DataFactory; // @ts-ignore import { Quad } from 'n3'; import { R2ROperator } from "./r2r"; +import { RSPQLParser } from "../rspql"; test('test_query_engine', async () => { const r2r = new R2ROperator(`SELECT * WHERE { ?s ?p ?o }`); @@ -64,6 +65,8 @@ test('test_query_engine_with_extension_functions', async () => { const results = new Array(); // @ts-ignore bindingsStream.on('data', (binding) => { + console.log(binding); + results.push(binding); }); @@ -71,5 +74,62 @@ test('test_query_engine_with_extension_functions', async () => { // The data-listener will not be called anymore once we get here. expect(results.length).toBe(2); }); +}); + + +test.skip('test_with_huge_quad_data', async () => { + const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + const location_two = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + const location_three = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + + let rspql_query = ` + PREFIX : + PREFIX saref: + PREFIX dahccsensors: + PREFIX func: + REGISTER RStream AS + SELECT (func:sqrt(?o * ?o + ?o2 * ?o2 + ?o3 * ?o3) AS ?activityIndex) + FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 6000 STEP 2000] + + WHERE { + WINDOW :w1 { + ?s1 saref:hasValue ?o . + ?s1 saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + }`; + + let rspql_parser = new RSPQLParser(); + let parsed_query = rspql_parser.parse(rspql_query); + let r2r = new R2ROperator(parsed_query.sparql); + let quad_set = new Set(); + let number_of_quads = 3000; + + + for (let i = 0; i < number_of_quads; i++) { + for (let j = 0; j < 3; j++) { + const stream_element = quad( + namedNode('https://rsp.js/test_subject_' + i), + namedNode('https://saref.etsi.org/core/hasValue'), + literal(`${Math.random() * 10}`, namedNode('http://www.w3.org/2001/XMLSchema#integer')), + namedNode(`https://rsp.js/w${j}`), + ); + + const stream_element2 = quad( + namedNode('https://rsp.js/test_subject_' + i), + namedNode('https://saref.etsi.org/core/relatesToProperty'), + namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), + namedNode(`https://rsp.js/w${j}`), + ); + quad_set.add(stream_element); + quad_set.add(stream_element2); + } + } + let quad_container = new QuadContainer(quad_set, 0); + let bindings_stream = await r2r.execute(quad_container); + bindings_stream.on('data', (binding: any) => { + console.log(`Binding: ${binding.toString()}`); + }); }); \ No newline at end of file diff --git a/src/operators/r2r.ts b/src/operators/r2r.ts index 4eb35d4..cbd32e2 100644 --- a/src/operators/r2r.ts +++ b/src/operators/r2r.ts @@ -39,7 +39,6 @@ export class R2ROperator { const store = new N3.Store(); for (const elem of container.elements) { store.addQuad(elem); - } for (const elem of this.staticData) { store.addQuad(elem); diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index 392e784..805c7ec 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -1,12 +1,12 @@ -import { EventEmitter } from "events"; import { DataFactory, Quad } from "n3"; const { namedNode, literal, defaultGraph, quad } = DataFactory; import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer } from './s2r'; /** - * - * @param num_events - * @param csparqlWindow + * Generate data for the test cases. + * @param {number} num_events - The number of events to generate. + * @param {CSPARQLWindow} csparqlWindow - The CSPARQL Window to which the data is to be added. + * @returns {void} - Returns nothing. */ function generate_data(num_events: number, csparqlWindow: CSPARQLWindow) { for (let i = 0; i < num_events; i++) { @@ -50,13 +50,6 @@ describe('CSPARQLWindow', () => { namedNode('http://rsp.js/test_object'), defaultGraph(), ); - const quad2 = quad( - namedNode('https://rsp.js/test_subject_1'), - namedNode('http://rsp.js/test_property'), - namedNode('http://rsp.js/test_object'), - defaultGraph(), - ); - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); csparqlWindow.add(quad1, 0); }); @@ -109,8 +102,6 @@ describe('CSPARQLWindow', () => { test('test_content_get', () => { - const recevied_data = new Array(); - const received_elementes = new Array; const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); // generate some data @@ -357,7 +348,7 @@ describe('CSPARQLWindow get quads from active windows', () => { beforeEach(() => { quad1 = {} as Quad; - csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1000); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1); window1 = new WindowInstance(0, 10); quadContainer1 = new QuadContainer(new Set([quad1]), 9); window2 = new WindowInstance(5, 15); @@ -391,9 +382,10 @@ describe('CSPARQLWindow get quads from active windows', () => { }); /** - * - * @param set - * @param window + * Check if the set contains the window instance. + * @param {Set} set - The set of window instances. + * @param {WindowInstance} window - The window instance to check. + * @returns {boolean} - True if the window instance is in the set, false otherwise. */ function hasWindowInstance(set: Set, window: WindowInstance) { for (const elem of set) { diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 5bc541b..d225ddc 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -4,6 +4,7 @@ import { Quad } from 'n3'; import { Logger, LogLevel, LogDestination } from "../util/Logger"; import * as LOG_CONFIG from "../config/log_config.json"; +/* eslint-disable no-unused-vars */ export enum ReportStrategy { NonEmptyContent, OnContentChange, @@ -15,18 +16,18 @@ export enum Tick { TupleDriven, BatchDriven, } - +/* eslint-enable no-unused-vars */ /** - * + * WindowInstance class to represent the window instance of the CSPARQL Window. */ export class WindowInstance { open: number; close: number; has_triggered: boolean; /** - * - * @param open - * @param close + * Constructor for the WindowInstance class. + * @param {number} open - The open time of the window instance of the form {open, close, has_triggered}. + * @param {number} close - The close time of the window instance of the form {open, close, has_triggered}. */ constructor(open: number, close: number) { this.open = open; @@ -35,21 +36,24 @@ export class WindowInstance { } /** - * + * Get the definition of the window instance. + * @returns {string} - The definition of the window instance in the form [open, close) Triggered: has_triggered. */ getDefinition() { return "[" + this.open + "," + this.close + ")" + " Triggered: " + this.has_triggered; } /** - * + * Get the code of the window instance. + * @returns {number} - The code of the window instance. */ hasCode() { return 0; } /** - * - * @param other_window + * Check if the window instance is the same as the other window instance. + * @param {WindowInstance} other_window - The other window instance to be compared. + * @returns {boolean} - True if the window instances are the same, else false. */ is_same(other_window: WindowInstance): boolean { return this.open == other_window.open && this.close == other_window.close; @@ -58,15 +62,15 @@ export class WindowInstance { /** - * + * QuadContainer class to represent the container for the quads in the CSPARQL Window. */ export class QuadContainer { elements: Set; last_time_stamp_changed: number; - /** - * - * @param elements - * @param ts + /** + * Constructor for the QuadContainer class. + * @param {Set} elements - The set of quads in the container. + * @param {number} ts - The timestamp of the last change in the container. */ constructor(elements: Set, ts: number) { this.elements = elements; @@ -74,15 +78,17 @@ export class QuadContainer { } /** - * + * Get the length of the container of the quads. + * @returns {number} - The length of the container. */ len() { return this.elements.size; } /** - * - * @param quad - * @param ts + * Add the quad to the container of the quads. + * @param {Quad} quad - The quad to be added to the container. + * @param {number} ts - The timestamp of the quad. + * @returns {void} - The function returns nothing. */ add(quad: Quad, ts: number) { this.elements.add(quad); @@ -90,7 +96,8 @@ export class QuadContainer { } /** - * + * Get the last time the container was changed. + * @returns {number} - The last time the container was changed. */ last_time_changed() { return this.last_time_stamp_changed; @@ -113,7 +120,7 @@ export class CSPARQLWindow { logger: Logger; // Logger for the CSPARQL Window tick: Tick; // The tick of the window emitter: EventEmitter; // The event emitter for the window - interval_id: NodeJS.Timeout; // The interval id for the out-of-order processing of the late elements + interval_id: ReturnType; // The interval id for the out-of-order processing of the late elements name: string; // The name of the window private current_watermark: number; // To track the current watermark of the window public late_buffer: Map>; // Buffer for out-of-order late elements @@ -121,7 +128,7 @@ export class CSPARQLWindow { public pending_triggers: Set; // Tracking windows that have pending triggers public time_to_trigger_processing_late_elements: number; // The time to trigger the processing of the late elements /** - * + * Constructor for the CSPARQLWindow class. * @param {string} name - The name of the CSPARQL Window. * @param {number} width - The width of the window. * @param {number} slide - The slide of the window. @@ -129,6 +136,7 @@ export class CSPARQLWindow { * @param {Tick} tick - The tick of the window. * @param {number} start_time - The start time of the window. * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. + * @param {number} time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements for out-of-order processing. */ constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number, time_to_trigger_processing_late_elements: number) { this.name = name; @@ -152,6 +160,7 @@ export class CSPARQLWindow { /** * Get the content of the window at the given timestamp if it exists, else return undefined. * @param {number} timestamp - The timestamp for which the content of the window is to be retrieved. + * @returns {QuadContainer | undefined} - The content of the window if it exists, else undefined. */ getContent(timestamp: number): QuadContainer | undefined { let max_window = null; @@ -175,6 +184,7 @@ export class CSPARQLWindow { * Add the event to the window at the given timestamp and checks if the event is late or not. * @param {Quad} e - The event to be added to the window. * @param {number} timestamp - The timestamp of the event. + * @returns {void} - The function does not return anything. */ add(e: Quad, timestamp: number) { console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); @@ -196,6 +206,7 @@ export class CSPARQLWindow { /** * Check if the event is late or not based on the timestamp of the event and comparing it to the current time of the window. * @param {number} timestamp - The timestamp of the event. + * @returns {boolean} - True if the event is late, else false. */ if_event_late(timestamp: number) { return this.time > timestamp; @@ -205,6 +216,7 @@ export class CSPARQLWindow { * Buffer the late event for out-of-order processing based on the maximum delay allowed for the events. * @param {Quad} e - The event to be buffered. * @param {number} timestamp - The timestamp of the event. + * @returns {void} - The function does not return anything. */ buffer_late_event(e: Quad, timestamp: number) { if (this.time - timestamp > this.max_delay) { @@ -225,6 +237,7 @@ export class CSPARQLWindow { /** * Evict the windows that are out of the watermark. * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. + * @returns {void} - The function does not return anything. */ evict_windows(toEvict: Set) { for (const w of toEvict) { @@ -236,8 +249,10 @@ export class CSPARQLWindow { /** * Add the window instance to the pending triggers to be emitted. * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. */ add_window_instance_to_pending_triggers(t_e: number) { + console.log(`Size of the pending triggers before adding the window instance: ${this.pending_triggers.size}`); const window_instance = this.get_window_instance(t_e); if (this.hasWindowInstance(this.pending_triggers, window_instance)) { return; @@ -245,14 +260,14 @@ export class CSPARQLWindow { else { this.pending_triggers.add(window_instance); console.log(`Size of the pending triggers: ${this.pending_triggers.size}`); - } } /** - * Process the event and update the watermark + * Process the event and update the watermark . * @param {Quad} e - The event to be processed of the form {subject, predicate, object, graph}. * @param {number} t_e - The timestamp of the event. + * @returns {Set} - The set of windows to be evicted from the window to be processed by the R2R Operator. */ process_event(e: Quad, t_e: number) { const toEvict = new Set(); @@ -276,6 +291,7 @@ export class CSPARQLWindow { /** * Get the window instance for the given timestamp. * @param {number} t_e - The timestamp for which the window instance is to be retrieved. + * @returns {WindowInstance} - The window instance for the given timestamp. */ get_window_instance(t_e: number) { const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; @@ -286,6 +302,7 @@ export class CSPARQLWindow { /** * Updating the watermark. * @param {number} new_time - The new watermark to be set. + * @returns {void} - The function does not return anything. */ update_watermark(new_time: number) { if (new_time > this.current_watermark) { @@ -327,8 +344,9 @@ export class CSPARQLWindow { } /** - * - * @param t_e + * Emit the triggers for the windows that are within the watermark. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. */ emit_on_trigger(t_e: number) { this.pending_triggers.forEach((window: WindowInstance) => { @@ -369,24 +387,27 @@ export class CSPARQLWindow { } /** - * + * Clear the window interval for the out-of-order processing of the late elements. + * @returns {void} - The function does not return anything. */ stop() { clearInterval(this.interval_id); } /** - * + * Get the current time of the window. + * @returns {number} - The current time of the window. */ get_current_watermark() { return this.current_watermark; } /** - * - * @param w - * @param content - * @param timestamp + * Compute the report based on the window instance and the content of the window. + * @param {WindowInstance} w - The window instance for which the report is to be computed. + * @param {QuadContainer} content - The content of the window (which is a QuadContainer). + * @param {number} timestamp - The timestamp of the event to be processed. + * @returns {boolean} - True if the report is to be computed, else false. */ compute_report(w: WindowInstance, content: QuadContainer, timestamp: number) { if (this.report == ReportStrategy.OnWindowClose) { @@ -399,31 +420,36 @@ export class CSPARQLWindow { } /** - * - * @param t_e + * Scope the window based on the given timestamp. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. */ scope(t_e: number) { const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; let o_i = c_sup - this.width; - do { + while (o_i <= t_e) { computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); o_i += this.slide; - } while (o_i <= t_e); + } } - /** - * - * @param output - * @param call_back + /* eslint-disable no-unused-vars */ + /** + * Subscribe to the window based on the output stream and the callback function. + * @param {'RStream' | 'IStream' | 'DStream'} output - The output stream to which the window is to be subscribed. The output stream can be one of {'RStream', 'IStream', 'DStream'}. + * @param {(QuadContainer) => void} call_back - The callback function to be called when the window emits the triggers. + * @returns {void} - The function does not return anything. */ subscribe(output: 'RStream' | 'IStream' | 'DStream', call_back: (data: QuadContainer) => void) { this.emitter.on(output, call_back); } + /* eslint-enable no-unused-vars */ /** * Process the late elements that are out of order. * The function is currently called periodically based on the slide of the window. + * @returns {void} - The function does not return anything. */ process_late_elements() { if (this.late_buffer.size == 0) { @@ -447,6 +473,7 @@ export class CSPARQLWindow { /** * Set the current time to the given value. * @param {number} t - The time to be set. + * @returns {void} - The function does not return anything. */ set_current_time(t: number) { this.time = t; @@ -455,6 +482,7 @@ export class CSPARQLWindow { /** * Set the watermark to the given value. * @param {number} t - The watermark to be set. + * @returns {void} - The function does not return anything. */ set_current_watermark(t: number) { this.current_watermark = t; @@ -464,6 +492,7 @@ export class CSPARQLWindow { * Get the quads from the active windows based on the given window instance. The function is used to get the content of the window based on the window instance. * @param {Map} map - The map of the active windows. * @param {WindowInstance} target - The window instance for which the content is to be retrieved. + * @returns {QuadContainer | undefined} - The content of the window instance if it exists, else undefined. */ get_quads_from_active_windows(map: Map, target: WindowInstance) { for (const [key, value] of map.entries()) { @@ -475,9 +504,10 @@ export class CSPARQLWindow { } /** - * - * @param set - * @param window + * Check if the window instance is present in the set of window instances. + * @param {Set} set - The set of window instances. + * @param {WindowInstance} window - The window instance to be checked. + * @returns {boolean} - True if the window instance is present in the set, else false. */ hasWindowInstance(set: Set, window: WindowInstance) { for (const elem of set) { @@ -490,10 +520,12 @@ export class CSPARQLWindow { /** * Get a string representation of the CSPARQLWindow definition. + * The function is used to get the definition of the CSPARQLWindow in a string format. + * @returns {string} - The string representation of the CSPARQLWindow definition. */ getCSPARQLWindowDefinition() { - let windowDefinitions = []; - for (const [window, quadContainer] of this.active_windows.entries()) { + const windowDefinitions = []; + for (const [window] of this.active_windows.entries()) { windowDefinitions.push(window.getDefinition()); } return `CSPARQLWindow { @@ -509,26 +541,26 @@ export class CSPARQLWindow { } } +/* eslint-disable no-unused-vars */ /** - * - * @param map - * @param key - * @param mappingFunction + * Compute the window if absent based on the given window instance and the mapping function. + * @param {Map} map - The map of the active windows. + * @param {WindowInstance} window - The window instance of the form {open, close, has_triggered}. + * @param {mappingFunction} mappingFunction - The mapping function to be applied to the window instance. */ -function computeWindowIfAbsent(map: Map, key: WindowInstance, mappingFunction: (key: WindowInstance) => QuadContainer) { - let val = map.get(key); +function computeWindowIfAbsent(map: Map, window: WindowInstance, + mappingFunction: (key: WindowInstance) => QuadContainer) { let found = false; for (const w of map.keys()) { - if (w.is_same(key)) { + if (w.is_same(window)) { found = true; - val = map.get(w); break; } } if (!found) { - val = mappingFunction(key); - map.set(key, val); + map.set(window, mappingFunction(window)); } - return val; -} \ No newline at end of file +} + +/* eslint-enable no-unused-vars */ diff --git a/src/rsp.test.ts b/src/rsp.test.ts index de69aaf..0b9573c 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -1,13 +1,13 @@ import { RDFStream, RSPEngine } from "./rsp"; -import { RSPQLParser } from "./rspql"; const N3 = require('n3'); const { DataFactory } = N3; const { namedNode, defaultGraph, quad, literal } = DataFactory; /** - * - * @param num_events - * @param rdfStreams + * Generate data for the test. + * @param {number} num_events - The number of events to generate. + * @param {RDFStream[]} rdfStreams - The RDF Streams to which the data is to be added. + * @returns {void} - The data generation. */ function generate_data(num_events: number, rdfStreams: RDFStream[]) { for (let i = 0; i < num_events; i++) { @@ -23,9 +23,10 @@ function generate_data(num_events: number, rdfStreams: RDFStream[]) { } } /** - * - * @param num_events - * @param rdfStream + * Generate data for the test. + * @param {number} num_events - The number of events to generate. + * @param {RDFStream} rdfStream - The RDF Stream to which the data is to be added. + * @returns {Promise} - The promise of the data generation. */ async function generate_data2(num_events: number, rdfStream: RDFStream) { for (let i = 0; i < num_events; i++) { @@ -51,7 +52,6 @@ test('rsp_consumer_test', async () => { const stream = rspEngine.getStream("https://rsp.js/stream1"); const emitter = rspEngine.register(); const results = new Array(); - let count = 0; // @ts-ignore emitter.on('RStream', (object) => { console.log(`received result ${object.bindings.toString()}`); @@ -239,9 +239,6 @@ test('test_out_of_order_event_processing', async () => { generate_data(10, [stream]); } - // @ts-ignore - const sleep = (ms) => new Promise(r => setTimeout(r, ms)); - if (stream) { await generate_data2(10, stream); } @@ -355,7 +352,6 @@ test('test ooo event processing with varying delay settings', async () => { stream.add(event, 9); stream.add(event, 7); } - const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); await sleep(2000); @@ -398,13 +394,11 @@ describe.skip('test the rsp engine with out of order processing with various dat test('testing RSP Engine with 4Hz data frequency', async () => { jest.setTimeout(100000); - const parser = new RSPQLParser(); - const parsed_query = parser.parse(query); const rsp_engine = new RSPEngine(query, { max_delay: 1000, time_to_trigger_processing_late_elements: 60000 }); - let emitter = rsp_engine.register(); + const emitter = rsp_engine.register(); const results = new Array(); const stream_x = await rsp_engine.getStream(location_one); @@ -428,6 +422,13 @@ describe.skip('test the rsp engine with out of order processing with various dat }); +/** + * Generate dummy data for the test. + * @param {number} number_of_events - The number of events to generate. + * @param {RDFStream[]} rdf_streams - The RDF Streams to which the data is to be added. + * @param {number} frequency - The frequency of the data to be generated. + * @returns {Promise} - The promise of the dummy data generation. + */ async function generate_dummy_data(number_of_events: number, rdf_streams: RDFStream[], frequency: number) { let events_generated = 0; const sleep_interval = 1000 / frequency; @@ -460,6 +461,11 @@ async function generate_dummy_data(number_of_events: number, rdf_streams: RDFStr } } +/** + * Sleep function. + * @param {number} ms - The time to sleep in milliseconds. + * @returns {Promise} - The promise of the sleep function. + */ function sleep(ms: number) { return new Promise(resolve => setTimeout(resolve, ms)); } \ No newline at end of file diff --git a/src/rsp.ts b/src/rsp.ts index 02fe3ad..7dee3a6 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -66,8 +66,11 @@ export class RSPEngine { /** * Constructor for the RSPEngine class. * @param {string} query - The query to be executed by the RSP Engine. - * @param {number} max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. + * @param {{max_delay: number, time_to_trigger_processing_late_elements: number}} opts - The options for the RSP Engine for processing the data if they are late or out of order. + * @param {number} opts.max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. + * @param {number} opts.time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements in the window. + * This field is optional and defaults to 60000 milliseconds. */ constructor(query: string, opts?: { max_delay?: number diff --git a/src/util/IntervalManager.ts b/src/util/IntervalManager.ts index 7faf6da..32bd1f7 100644 --- a/src/util/IntervalManager.ts +++ b/src/util/IntervalManager.ts @@ -1,13 +1,23 @@ import { CSPARQLWindow } from "../operators/s2r"; +/** + * Class to manage the intervals for the CSPARQL Window. + */ export class IntervalManager { public window_instance: CSPARQLWindow; + /** + * Constructor for the IntervalManager class. + * @param {CSPARQLWindow} window_instance - The CSPARQL Window instance for which the interval is to be managed. + */ constructor(window_instance: CSPARQLWindow) { this.window_instance = window_instance; } + /** + * Set the interval for the CSPARQL Window. + */ clear_interval() { if (this.window_instance.interval_id) { clearInterval(this.window_instance.interval_id); From 19834d7aca7ebad8d43a3aabb050f2e010e9f74d Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 10 Jul 2024 14:23:31 +0200 Subject: [PATCH 20/50] added logging of the triggering window to show the length of the quadcontainer. --- src/operators/s2r.ts | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index d225ddc..1cdd694 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -320,7 +320,6 @@ export class CSPARQLWindow { * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. */ evict_and_trigger_on_watermark() { - // Evict windows that are out of the watermark and should be evicted. const to_evict = new Set(); // Checking all of the currently active windows. @@ -373,7 +372,7 @@ export class CSPARQLWindow { } else { window.has_triggered = true; - this.logger.info(`Window ${window.getDefinition()} triggers with Content: " + ${content}`, `CSPARQLWindow`); + this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); this.emitter.emit('RStream', content); } } @@ -383,7 +382,7 @@ export class CSPARQLWindow { console.error("Window [" + window.open + "," + window.close + ") should not trigger"); } } - }) + }); } /** From aeb6c8276d8e6ca2fe74caf43c14e509e7e476ec Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 10 Jul 2024 14:40:55 +0200 Subject: [PATCH 21/50] refactor: Add conditional check for content length before triggering window This commit refactors the `CSPARQLWindow` class to add a conditional check for the length of the `content` before triggering the window. If the `content` has a length greater than 0, the window is triggered and the `RStream` event is emitted. Otherwise, a log message is added to indicate that the window has no data. --- src/operators/s2r.ts | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 1cdd694..2433840 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -371,9 +371,14 @@ export class CSPARQLWindow { this.logger.info(`Window ${window.getDefinition()} is already triggered so not triggering it again.`, `CSPARQLWindow`); } else { - window.has_triggered = true; - this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); - this.emitter.emit('RStream', content); + if (content.len() > 0) { + this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); + window.has_triggered = true; + this.emitter.emit('RStream', content); + } + else { + this.logger.info(`Window ${window.getDefinition()} has no data.`, `CSPARQLWindow`); + } } } this.pending_triggers.delete(window); From cdb951791edacfae6c65031c0690722d28a842dc Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 10 Jul 2024 14:53:57 +0200 Subject: [PATCH 22/50] refactor: Add conditional check for content length before triggering window --- src/operators/s2r.ts | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 2433840..e640706 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -58,6 +58,10 @@ export class WindowInstance { is_same(other_window: WindowInstance): boolean { return this.open == other_window.open && this.close == other_window.close; } + + set_triggered() { + this.has_triggered = true; + } } @@ -188,18 +192,15 @@ export class CSPARQLWindow { */ add(e: Quad, timestamp: number) { console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); - this.time = timestamp; - const t_e = timestamp; + if (this.if_event_late(timestamp)) { + console.log("Event is late at time " + timestamp); + this.buffer_late_event(e, this.time); + return; + } + const to_evict = this.process_event(e, timestamp); if (timestamp > this.time) { this.time = timestamp; } - - if (this.if_event_late(t_e)) { - console.log("Event is late at time " + t_e); - this.buffer_late_event(e, t_e); - return; - } - const to_evict = this.process_event(e, t_e); this.evict_windows(to_evict); } @@ -312,7 +313,6 @@ export class CSPARQLWindow { } else { console.error("Watermark is not increasing"); - this.logger.info(`Watermark is not increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); } } @@ -373,7 +373,7 @@ export class CSPARQLWindow { else { if (content.len() > 0) { this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); - window.has_triggered = true; + window.set_triggered(); this.emitter.emit('RStream', content); } else { From 18889e519a66d7fec886b8eeb0f212400a654041 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Fri, 12 Jul 2024 10:05:11 +0200 Subject: [PATCH 23/50] refactor: Add conditional check for content length before triggering window --- src/operators/s2r.ts | 13 ++++++++----- src/rsp.test.ts | 3 ++- 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index e640706..2b19123 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -191,7 +191,7 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ add(e: Quad, timestamp: number) { - console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); + console.debug(`Adding [" + ${e} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); if (this.if_event_late(timestamp)) { console.log("Event is late at time " + timestamp); this.buffer_late_event(e, this.time); @@ -229,6 +229,8 @@ export class CSPARQLWindow { console.warn("Late element [" + e + "] with timestamp [" + timestamp + "] is being buffered for out of order processing"); if (!this.late_buffer.has(timestamp)) { this.late_buffer.set(timestamp, new Set()); + console.log(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`); + } this.late_buffer.get(timestamp)?.add(e); this.logger.info(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`, `CSPARQLWindow`); @@ -253,6 +255,7 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ add_window_instance_to_pending_triggers(t_e: number) { + this.logger.info(`Pending Triggers are : ${JSON.stringify(this.pending_triggers)}`, `CSPARQLWindow`) console.log(`Size of the pending triggers before adding the window instance: ${this.pending_triggers.size}`); const window_instance = this.get_window_instance(t_e); if (this.hasWindowInstance(this.pending_triggers, window_instance)) { @@ -260,7 +263,6 @@ export class CSPARQLWindow { } else { this.pending_triggers.add(window_instance); - console.log(`Size of the pending triggers: ${this.pending_triggers.size}`); } } @@ -283,7 +285,6 @@ export class CSPARQLWindow { toEvict.add(w); } } - this.logger.info(`Event [" + ${e} + "] with timestamp [" + ${t_e} + "] is being processed`, `CSPARQLWindow`); this.update_watermark(t_e); this.add_window_instance_to_pending_triggers(t_e); return toEvict; @@ -349,8 +350,9 @@ export class CSPARQLWindow { */ emit_on_trigger(t_e: number) { this.pending_triggers.forEach((window: WindowInstance) => { + this.logger.info(`Emitting triggers for the window ${window.getDefinition()}`, `CSPARQLWindow`); const content = this.get_quads_from_active_windows(this.active_windows, window); - if (content) { + if (content && content.len() > 0) { let should_emit = false; if (this.report == ReportStrategy.OnWindowClose) { if (window.close <= t_e) { @@ -365,7 +367,7 @@ export class CSPARQLWindow { } if (should_emit) { - this.time = t_e; + // this.time = t_e; if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { if (window.has_triggered) { this.logger.info(`Window ${window.getDefinition()} is already triggered so not triggering it again.`, `CSPARQLWindow`); @@ -373,6 +375,7 @@ export class CSPARQLWindow { else { if (content.len() > 0) { this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); + window.set_triggered(); this.emitter.emit('RStream', content); } diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 0b9573c..2ef1d59 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -309,6 +309,7 @@ test('test out of order processing with different delays', async () => { test('test ooo event processing with varying delay settings', async () => { + jest.setTimeout(100000); const query = ` PREFIX : REGISTER RStream AS @@ -338,6 +339,7 @@ test('test ooo event processing with varying delay settings', async () => { emitter.on('RStream', (object: any) => { results.push(object.bindings.toString()); }); + const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); if (stream) { stream.add(event, 0); @@ -352,7 +354,6 @@ test('test ooo event processing with varying delay settings', async () => { stream.add(event, 9); stream.add(event, 7); } - const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); await sleep(2000); expect(results.length).toBeGreaterThan(0); From 8a0060e7a66344f9894bc99a37ccd03b306febd1 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 20 Aug 2024 10:42:37 +0200 Subject: [PATCH 24/50] ```text refactor: Add simple-statistics npm dependency and update log_config.json This commit adds the "simple-statistics" npm dependency to the project, which is required for performing statistical calculations. It also updates the "log_config.json" file in both the source and distribution directories to include the "R2ROperator" class in the "classes_to_log" array. This ensures that log messages are generated for the "R2ROperator" class as well. --- config.json | 49 ++ dist/config/log_config.json | 7 +- dist/operators/r2r.d.ts | 20 + dist/operators/r2r.js | 26 +- dist/operators/r2r.test.js | 58 ++- dist/operators/s2r.d.ts | 196 ++++++- dist/operators/s2r.js | 478 +++++++++++++++--- dist/operators/s2r.test.js | 402 +++++++++++---- dist/rsp.d.ts | 51 +- dist/rsp.js | 127 +++-- dist/rsp.test.js | 282 +++++++++-- dist/rspql.d.ts | 38 ++ dist/rspql.js | 46 +- dist/rspql.test.js | 34 +- .../util/IntervalManager.js | 18 +- dist/util/Logger.d.ts | 88 ++++ dist/util/Logger.js | 93 +++- package-lock.json | 14 + package.json | 1 + src/config/log_config.json | 3 +- src/operators/s2r.test.ts | 41 +- src/operators/s2r.ts | 36 +- src/rsp.test.ts | 2 +- src/rsp.ts | 3 +- 24 files changed, 1788 insertions(+), 325 deletions(-) create mode 100644 config.json rename src/util/IntervalManager.ts => dist/util/IntervalManager.js (72%) diff --git a/config.json b/config.json new file mode 100644 index 0000000..2ca7517 --- /dev/null +++ b/config.json @@ -0,0 +1,49 @@ +{ + "@context": "https://linkedsoftwaredependencies.org/bundles/npm/@solid/community-server/^7.0.0/components/context.jsonld", + "import": [ + "css:config/app/init/static-root.json", + "css:config/app/main/default.json", + "css:config/app/variables/default.json", + "css:config/http/handler/default.json", + "css:config/http/middleware/default.json", + "css:config/http/notifications/webhooks.json", + "css:config/http/server-factory/http.json", + "css:config/http/static/default.json", + "css:config/identity/access/public.json", + "css:config/identity/email/default.json", + "css:config/identity/handler/default.json", + "css:config/identity/oidc/default.json", + "css:config/identity/ownership/token.json", + "css:config/identity/pod/static.json", + "css:config/ldp/authentication/dpop-bearer.json", + "css:config/ldp/authorization/allow-all.json", + "css:config/ldp/handler/default.json", + "css:config/ldp/metadata-parser/default.json", + "css:config/ldp/metadata-writer/default.json", + "css:config/ldp/modes/default.json", + "css:config/storage/backend/file.json", + "css:config/storage/key-value/resource-store.json", + "css:config/storage/location/pod.json", + "css:config/storage/middleware/default.json", + "css:config/util/auxiliary/empty.json", + "css:config/util/identifiers/suffix.json", + "css:config/util/index/default.json", + "css:config/util/logging/winston.json", + "css:config/util/representation-conversion/default.json", + "css:config/util/resource-locker/redis.json", + "css:config/util/variables/default.json" + ], + "@graph": [ + { + "comment": "The new expiration time for inactive locks, in milliseconds.", + "@type": "Override", + "overrideInstance": { + "@id": "urn:solid-server:default:ResourceLocker" + }, + "overrideParameters": { + "@type": "WrappedExpiringReadWriteLocker", + "expiration": 180000 + } + } + ] +} \ No newline at end of file diff --git a/dist/config/log_config.json b/dist/config/log_config.json index f39ad60..dcba16a 100644 --- a/dist/config/log_config.json +++ b/dist/config/log_config.json @@ -2,8 +2,9 @@ "log_level": "INFO", "classes_to_log": [ "RDFStream", - "RSPEngine" + "RSPEngine", + "CSPARQLWindow", + "R2ROperator" ], - "destination": "FILE", - "max_delay": 60000 + "destination": "FILE" } diff --git a/dist/operators/r2r.d.ts b/dist/operators/r2r.d.ts index a0b9e52..eb1edd1 100644 --- a/dist/operators/r2r.d.ts +++ b/dist/operators/r2r.d.ts @@ -1,9 +1,29 @@ import { QuadContainer } from "./s2r"; import { Quad } from 'n3'; +/** + * R2R Operator Implementation Class for the RSP Engine. + * It performs operations such as Join, Filter, Aggregation on a stream of data + * to generate a new stream of data. + */ export declare class R2ROperator { query: string; staticData: Set; + /** + * Constructor to initialize the R2R Operator. + * @param {string} query - The query to be executed. + */ constructor(query: string); + /** + * Add static data to the R2R Operator which will be used in the query execution + * In case there are some quads which are present in each of the relation to be executed, it is better to add them as static data + * and therefore save space and the amount of data to be processed. + * @param {Quad} quad - The quad to be added as static data. + */ addStaticData(quad: Quad): void; + /** + * Execute the R2R Operator on the given container of quads. + * @param {QuadContainer} container - The container of quads on which the operator is to be executed. The container contains a set of quads. + * @returns {Promise} - The promise of the result of the query execution. + */ execute(container: QuadContainer): Promise; } diff --git a/dist/operators/r2r.js b/dist/operators/r2r.js index f9bbb7e..f27023f 100644 --- a/dist/operators/r2r.js +++ b/dist/operators/r2r.js @@ -13,24 +13,44 @@ exports.R2ROperator = void 0; const rdf_data_factory_1 = require("rdf-data-factory"); const N3 = require('n3'); const DF = new rdf_data_factory_1.DataFactory(); +const QueryEngine = require('@comunica/query-sparql').QueryEngine; +/** + * R2R Operator Implementation Class for the RSP Engine. + * It performs operations such as Join, Filter, Aggregation on a stream of data + * to generate a new stream of data. + */ class R2ROperator { + /** + * Constructor to initialize the R2R Operator. + * @param {string} query - The query to be executed. + */ constructor(query) { this.query = query; this.staticData = new Set(); } + /** + * Add static data to the R2R Operator which will be used in the query execution + * In case there are some quads which are present in each of the relation to be executed, it is better to add them as static data + * and therefore save space and the amount of data to be processed. + * @param {Quad} quad - The quad to be added as static data. + */ addStaticData(quad) { this.staticData.add(quad); } + /** + * Execute the R2R Operator on the given container of quads. + * @param {QuadContainer} container - The container of quads on which the operator is to be executed. The container contains a set of quads. + * @returns {Promise} - The promise of the result of the query execution. + */ execute(container) { return __awaiter(this, void 0, void 0, function* () { const store = new N3.Store(); - for (let elem of container.elements) { + for (const elem of container.elements) { store.addQuad(elem); } - for (let elem of this.staticData) { + for (const elem of this.staticData) { store.addQuad(elem); } - const QueryEngine = require('@comunica/query-sparql').QueryEngine; const myEngine = new QueryEngine(); return yield myEngine.queryBindings(this.query, { sources: [store], diff --git a/dist/operators/r2r.test.js b/dist/operators/r2r.test.js index 240b033..5e6ca4b 100644 --- a/dist/operators/r2r.test.js +++ b/dist/operators/r2r.test.js @@ -14,16 +14,17 @@ const N3 = require('n3'); const { DataFactory } = N3; const { namedNode, literal, defaultGraph, quad } = DataFactory; const r2r_1 = require("./r2r"); +const rspql_1 = require("../rspql"); test('test_query_engine', () => __awaiter(void 0, void 0, void 0, function* () { - let r2r = new r2r_1.R2ROperator(`SELECT * WHERE { ?s ?p ?o }`); + const r2r = new r2r_1.R2ROperator(`SELECT * WHERE { ?s ?p ?o }`); const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); const quad2 = quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - let quadSet = new Set(); + const quadSet = new Set(); quadSet.add(quad1); quadSet.add(quad2); - let container = new s2r_1.QuadContainer(quadSet, 0); + const container = new s2r_1.QuadContainer(quadSet, 0); const bindingsStream = yield r2r.execute(container); - let resuults = new Array(); + const resuults = new Array(); // @ts-ignore bindingsStream.on('data', (binding) => { console.log(binding.toString()); // Quick way to print bindings for testing @@ -35,19 +36,20 @@ test('test_query_engine', () => __awaiter(void 0, void 0, void 0, function* () { }); })); test('test_query_engine_with_extension_functions', () => __awaiter(void 0, void 0, void 0, function* () { - let r2r = new r2r_1.R2ROperator(` + const r2r = new r2r_1.R2ROperator(` PREFIX extension: SELECT (extension:sqrt(?o) as ?sqrt) (extension:pow(?o,2) as ?pow) WHERE { ?s ?p ?o }`); const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), literal('4'), defaultGraph()); const quad2 = quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), literal('9'), defaultGraph()); - let quadSet = new Set(); + const quadSet = new Set(); quadSet.add(quad1); quadSet.add(quad2); - let container = new s2r_1.QuadContainer(quadSet, 0); + const container = new s2r_1.QuadContainer(quadSet, 0); const bindingsStream = yield r2r.execute(container); - let results = new Array(); + const results = new Array(); // @ts-ignore bindingsStream.on('data', (binding) => { + console.log(binding); results.push(binding); }); bindingsStream.on('end', () => { @@ -55,3 +57,43 @@ test('test_query_engine_with_extension_functions', () => __awaiter(void 0, void expect(results.length).toBe(2); }); })); +test.skip('test_with_huge_quad_data', () => __awaiter(void 0, void 0, void 0, function* () { + const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + const location_two = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + const location_three = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + let rspql_query = ` + PREFIX : + PREFIX saref: + PREFIX dahccsensors: + PREFIX func: + REGISTER RStream AS + SELECT (func:sqrt(?o * ?o + ?o2 * ?o2 + ?o3 * ?o3) AS ?activityIndex) + FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 6000 STEP 2000] + + WHERE { + WINDOW :w1 { + ?s1 saref:hasValue ?o . + ?s1 saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + }`; + let rspql_parser = new rspql_1.RSPQLParser(); + let parsed_query = rspql_parser.parse(rspql_query); + let r2r = new r2r_1.R2ROperator(parsed_query.sparql); + let quad_set = new Set(); + let number_of_quads = 3000; + for (let i = 0; i < number_of_quads; i++) { + for (let j = 0; j < 3; j++) { + const stream_element = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('https://saref.etsi.org/core/hasValue'), literal(`${Math.random() * 10}`, namedNode('http://www.w3.org/2001/XMLSchema#integer')), namedNode(`https://rsp.js/w${j}`)); + const stream_element2 = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('https://saref.etsi.org/core/relatesToProperty'), namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), namedNode(`https://rsp.js/w${j}`)); + quad_set.add(stream_element); + quad_set.add(stream_element2); + } + } + let quad_container = new s2r_1.QuadContainer(quad_set, 0); + let bindings_stream = yield r2r.execute(quad_container); + bindings_stream.on('data', (binding) => { + console.log(`Binding: ${binding.toString()}`); + }); +})); diff --git a/dist/operators/s2r.d.ts b/dist/operators/s2r.d.ts index e265db6..41a5bcd 100644 --- a/dist/operators/s2r.d.ts +++ b/dist/operators/s2r.d.ts @@ -1,7 +1,7 @@ /// -/// import { EventEmitter } from "events"; import { Quad } from 'n3'; +import { Logger } from "../util/Logger"; export declare enum ReportStrategy { NonEmptyContent = 0, OnContentChange = 1, @@ -13,22 +13,72 @@ export declare enum Tick { TupleDriven = 1, BatchDriven = 2 } +/** + * WindowInstance class to represent the window instance of the CSPARQL Window. + */ export declare class WindowInstance { open: number; close: number; + has_triggered: boolean; + /** + * Constructor for the WindowInstance class. + * @param {number} open - The open time of the window instance of the form {open, close, has_triggered}. + * @param {number} close - The close time of the window instance of the form {open, close, has_triggered}. + */ constructor(open: number, close: number); + /** + * Get the definition of the window instance. + * @returns {string} - The definition of the window instance in the form [open, close) Triggered: has_triggered. + */ getDefinition(): string; + /** + * Get the code of the window instance. + * @returns {number} - The code of the window instance. + */ hasCode(): number; + /** + * Check if the window instance is the same as the other window instance. + * @param {WindowInstance} other_window - The other window instance to be compared. + * @returns {boolean} - True if the window instances are the same, else false. + */ is_same(other_window: WindowInstance): boolean; + set_triggered(): void; } +/** + * QuadContainer class to represent the container for the quads in the CSPARQL Window. + */ export declare class QuadContainer { elements: Set; last_time_stamp_changed: number; + /** + * Constructor for the QuadContainer class. + * @param {Set} elements - The set of quads in the container. + * @param {number} ts - The timestamp of the last change in the container. + */ constructor(elements: Set, ts: number); + /** + * Get the length of the container of the quads. + * @returns {number} - The length of the container. + */ len(): number; + /** + * Add the quad to the container of the quads. + * @param {Quad} quad - The quad to be added to the container. + * @param {number} ts - The timestamp of the quad. + * @returns {void} - The function returns nothing. + */ add(quad: Quad, ts: number): void; + /** + * Get the last time the container was changed. + * @returns {number} - The last time the container was changed. + */ last_time_changed(): number; } +/** + * CSPARQL Window class that implements the windowing mechanism for the RSP Engine. + * The class is responsible for managing the windows, processing the events, and emitting the triggers based on the report strategy. + * The class also handles the out-of-order processing of the events based on the maximum delay allowed for the events and the watermark. + */ export declare class CSPARQLWindow { width: number; slide: number; @@ -36,20 +86,156 @@ export declare class CSPARQLWindow { t0: number; active_windows: Map; report: ReportStrategy; + logger: Logger; tick: Tick; emitter: EventEmitter; - interval_id: NodeJS.Timeout; name: string; - private late_buffer; - private max_delay; + private current_watermark; + late_buffer: Map>; + max_delay: number; + pending_triggers: Set; + /** + * Constructor for the CSPARQLWindow class. + * @param {string} name - The name of the CSPARQL Window. + * @param {number} width - The width of the window. + * @param {number} slide - The slide of the window. + * @param {ReportStrategy} report - The report strategy for the window. + * @param {Tick} tick - The tick of the window. + * @param {number} start_time - The start time of the window. + * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. + */ constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number); + /** + * Get the content of the window at the given timestamp if it exists, else return undefined. + * @param {number} timestamp - The timestamp for which the content of the window is to be retrieved. + * @returns {QuadContainer | undefined} - The content of the window if it exists, else undefined. + */ getContent(timestamp: number): QuadContainer | undefined; + /** + * Add the event to the window at the given timestamp and checks if the event is late or not. + * @param {Quad} e - The event to be added to the window. + * @param {number} timestamp - The timestamp of the event. + * @returns {void} - The function does not return anything. + */ add(e: Quad, timestamp: number): void; - process_event(e: Quad, t_e: number, toEvict: Set): void; + /** + * Check if the event is late or not based on the timestamp of the event and comparing it to the current time of the window. + * @param {number} timestamp - The timestamp of the event. + * @returns {boolean} - True if the event is late, else false. + */ + if_event_late(timestamp: number): boolean; + /** + * Buffer the late event for out-of-order processing based on the maximum delay allowed for the events. + * @param {Quad} e - The event to be buffered. + * @param {number} timestamp - The timestamp of the event. + * @returns {void} - The function does not return anything. + */ + buffer_late_event(e: Quad, timestamp: number): void; + /** + * Evict the windows that are out of the watermark. + * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. + * @returns {void} - The function does not return anything. + */ + evict_windows(toEvict: Set): void; + /** + * Add the window instance to the pending triggers to be emitted. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. + */ + add_window_instance_to_pending_triggers(t_e: number): void; + /** + * Process the event and update the watermark . + * @param {Quad} e - The event to be processed of the form {subject, predicate, object, graph}. + * @param {number} t_e - The timestamp of the event. + * @returns {Set} - The set of windows to be evicted from the window to be processed by the R2R Operator. + */ + process_event(e: Quad, t_e: number): Set; + /** + * Get the window instance for the given timestamp. + * @param {number} t_e - The timestamp for which the window instance is to be retrieved. + * @returns {WindowInstance} - The window instance for the given timestamp. + */ + get_window_instance(t_e: number): WindowInstance; + /** + * Updating the watermark. + * @param {number} new_time - The new watermark to be set. + * @returns {void} - The function does not return anything. + */ + update_watermark(new_time: number): void; + /** + * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. + */ + evict_and_trigger_on_watermark(): void; + /** + * Emit the triggers for the windows that are within the watermark. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. + */ emit_on_trigger(t_e: number): void; + /** + * Get the current time of the window. + * @returns {number} - The current time of the window. + */ + get_current_watermark(): number; + /** + * Compute the report based on the window instance and the content of the window. + * @param {WindowInstance} w - The window instance for which the report is to be computed. + * @param {QuadContainer} content - The content of the window (which is a QuadContainer). + * @param {number} timestamp - The timestamp of the event to be processed. + * @returns {boolean} - True if the report is to be computed, else false. + */ compute_report(w: WindowInstance, content: QuadContainer, timestamp: number): boolean; + /** + * Scope the window based on the given timestamp. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. + */ scope(t_e: number): void; + /** + * Subscribe to the window based on the output stream and the callback function. + * @param {'RStream' | 'IStream' | 'DStream'} output - The output stream to which the window is to be subscribed. The output stream can be one of {'RStream', 'IStream', 'DStream'}. + * @param {(QuadContainer) => void} call_back - The callback function to be called when the window emits the triggers. + * @returns {void} - The function does not return anything. + */ subscribe(output: 'RStream' | 'IStream' | 'DStream', call_back: (data: QuadContainer) => void): void; + /** + * Process the late elements that are out of order. + * The function is currently called periodically based on the slide of the window. + * @returns {void} - The function does not return anything. + */ process_late_elements(): void; + /** + * Set the current time to the given value. + * @param {number} t - The time to be set. + * @returns {void} - The function does not return anything. + */ set_current_time(t: number): void; + set_max_delay(delay: number): void; + /** + * Set the watermark to the given value. + * @param {number} t - The watermark to be set. + * @returns {void} - The function does not return anything. + */ + set_current_watermark(t: number): void; + /** + * Get the quads from the active windows based on the given window instance. The function is used to get the content of the window based on the window instance. + * @param {Map} map - The map of the active windows. + * @param {WindowInstance} target - The window instance for which the content is to be retrieved. + * @returns {QuadContainer | undefined} - The content of the window instance if it exists, else undefined. + */ + get_quads_from_active_windows(map: Map, target: WindowInstance): QuadContainer | undefined; + /** + * Check if the window instance is present in the set of window instances. + * @param {Set} set - The set of window instances. + * @param {WindowInstance} window - The window instance to be checked. + * @returns {boolean} - True if the window instance is present in the set, else false. + */ + hasWindowInstance(set: Set, window: WindowInstance): boolean; + /** + * Get a string representation of the CSPARQLWindow definition. + * The function is used to get the definition of the CSPARQLWindow in a string format. + * @returns {string} - The string representation of the CSPARQLWindow definition. + */ + getCSPARQLWindowDefinition(): string; } +export declare function gammaOperator(shape: number, scale: number): number; diff --git a/dist/operators/s2r.js b/dist/operators/s2r.js index be5ee6b..0248172 100644 --- a/dist/operators/s2r.js +++ b/dist/operators/s2r.js @@ -1,7 +1,38 @@ "use strict"; +var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { + if (k2 === undefined) k2 = k; + var desc = Object.getOwnPropertyDescriptor(m, k); + if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { + desc = { enumerable: true, get: function() { return m[k]; } }; + } + Object.defineProperty(o, k2, desc); +}) : (function(o, m, k, k2) { + if (k2 === undefined) k2 = k; + o[k2] = m[k]; +})); +var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { + Object.defineProperty(o, "default", { enumerable: true, value: v }); +}) : function(o, v) { + o["default"] = v; +}); +var __importStar = (this && this.__importStar) || function (mod) { + if (mod && mod.__esModule) return mod; + var result = {}; + if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); + __setModuleDefault(result, mod); + return result; +}; +var __importDefault = (this && this.__importDefault) || function (mod) { + return (mod && mod.__esModule) ? mod : { "default": mod }; +}; Object.defineProperty(exports, "__esModule", { value: true }); -exports.CSPARQLWindow = exports.QuadContainer = exports.WindowInstance = exports.Tick = exports.ReportStrategy = void 0; +exports.gammaOperator = exports.CSPARQLWindow = exports.QuadContainer = exports.WindowInstance = exports.Tick = exports.ReportStrategy = void 0; const events_1 = require("events"); +const fs_1 = __importDefault(require("fs")); +const Logger_1 = require("../util/Logger"); +const LOG_CONFIG = __importStar(require("../config/log_config.json")); +const ss = require('simple-statistics'); +/* eslint-disable no-unused-vars */ var ReportStrategy; (function (ReportStrategy) { ReportStrategy[ReportStrategy["NonEmptyContent"] = 0] = "NonEmptyContent"; @@ -15,54 +46,125 @@ var Tick; Tick[Tick["TupleDriven"] = 1] = "TupleDriven"; Tick[Tick["BatchDriven"] = 2] = "BatchDriven"; })(Tick = exports.Tick || (exports.Tick = {})); +/* eslint-enable no-unused-vars */ +/** + * WindowInstance class to represent the window instance of the CSPARQL Window. + */ class WindowInstance { + /** + * Constructor for the WindowInstance class. + * @param {number} open - The open time of the window instance of the form {open, close, has_triggered}. + * @param {number} close - The close time of the window instance of the form {open, close, has_triggered}. + */ constructor(open, close) { this.open = open; this.close = close; + this.has_triggered = false; } + /** + * Get the definition of the window instance. + * @returns {string} - The definition of the window instance in the form [open, close) Triggered: has_triggered. + */ getDefinition() { - return "[" + this.open + "," + this.close + ")"; + return "[" + this.open + "," + this.close + ")" + " Triggered: " + this.has_triggered; } + /** + * Get the code of the window instance. + * @returns {number} - The code of the window instance. + */ hasCode() { return 0; } + /** + * Check if the window instance is the same as the other window instance. + * @param {WindowInstance} other_window - The other window instance to be compared. + * @returns {boolean} - True if the window instances are the same, else false. + */ is_same(other_window) { return this.open == other_window.open && this.close == other_window.close; } + set_triggered() { + this.has_triggered = true; + } } exports.WindowInstance = WindowInstance; +/** + * QuadContainer class to represent the container for the quads in the CSPARQL Window. + */ class QuadContainer { + /** + * Constructor for the QuadContainer class. + * @param {Set} elements - The set of quads in the container. + * @param {number} ts - The timestamp of the last change in the container. + */ constructor(elements, ts) { this.elements = elements; this.last_time_stamp_changed = ts; } + /** + * Get the length of the container of the quads. + * @returns {number} - The length of the container. + */ len() { return this.elements.size; } + /** + * Add the quad to the container of the quads. + * @param {Quad} quad - The quad to be added to the container. + * @param {number} ts - The timestamp of the quad. + * @returns {void} - The function returns nothing. + */ add(quad, ts) { this.elements.add(quad); this.last_time_stamp_changed = ts; } + /** + * Get the last time the container was changed. + * @returns {number} - The last time the container was changed. + */ last_time_changed() { return this.last_time_stamp_changed; } } exports.QuadContainer = QuadContainer; +/** + * CSPARQL Window class that implements the windowing mechanism for the RSP Engine. + * The class is responsible for managing the windows, processing the events, and emitting the triggers based on the report strategy. + * The class also handles the out-of-order processing of the events based on the maximum delay allowed for the events and the watermark. + */ class CSPARQLWindow { + /** + * Constructor for the CSPARQLWindow class. + * @param {string} name - The name of the CSPARQL Window. + * @param {number} width - The width of the window. + * @param {number} slide - The slide of the window. + * @param {ReportStrategy} report - The report strategy for the window. + * @param {Tick} tick - The tick of the window. + * @param {number} start_time - The start time of the window. + * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. + */ constructor(name, width, slide, report, tick, start_time, max_delay) { this.name = name; this.width = width; this.slide = slide; this.report = report; this.tick = tick; + const log_level = Logger_1.LogLevel[LOG_CONFIG.log_level]; + this.logger = new Logger_1.Logger(log_level, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination); this.time = start_time; + this.current_watermark = start_time; this.t0 = start_time; this.active_windows = new Map(); this.emitter = new events_1.EventEmitter(); this.max_delay = max_delay; + this.pending_triggers = new Set(); this.late_buffer = new Map(); - this.interval_id = setInterval(() => { this.process_late_elements(); }, this.slide); } + /** + * Get the content of the window at the given timestamp if it exists, else return undefined. + * @param {number} timestamp - The timestamp for which the content of the window is to be retrieved. + * @returns {QuadContainer | undefined} - The content of the window if it exists, else undefined. + */ getContent(timestamp) { let max_window = null; let max_time = Number.MAX_SAFE_INTEGER; @@ -81,116 +183,368 @@ class CSPARQLWindow { return undefined; } } + /** + * Add the event to the window at the given timestamp and checks if the event is late or not. + * @param {Quad} e - The event to be added to the window. + * @param {number} timestamp - The timestamp of the event. + * @returns {void} - The function does not return anything. + */ add(e, timestamp) { + let processing_time = Date.now(); + fs_1.default.appendFileSync('time_log.txt', `${processing_time - timestamp}\n`); + console.debug(`Adding [" + ${e} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); + if (this.if_event_late(timestamp)) { + console.log("Event is late at time " + timestamp); + this.buffer_late_event(e, this.time); + return; + } + const to_evict = this.process_event(e, timestamp); + if (timestamp > this.time) { + this.time = timestamp; + } + this.evict_windows(to_evict); + } + /** + * Check if the event is late or not based on the timestamp of the event and comparing it to the current time of the window. + * @param {number} timestamp - The timestamp of the event. + * @returns {boolean} - True if the event is late, else false. + */ + if_event_late(timestamp) { + return this.time > timestamp; + } + /** + * Buffer the late event for out-of-order processing based on the maximum delay allowed for the events. + * @param {Quad} e - The event to be buffered. + * @param {number} timestamp - The timestamp of the event. + * @returns {void} - The function does not return anything. + */ + buffer_late_event(e, timestamp) { var _a; - console.debug("Window " + this.name + " Received element (" + e + "," + timestamp + ")"); - let toEvict = new Set(); - let t_e = timestamp; - if (this.time > t_e) { - if (this.time - t_e > this.max_delay) { - console.error("Late element [" + e + "] with timestamp [" + t_e + "] is out of the allowed delay [" + this.max_delay + "]"); - return; - } - else { - console.warn("Late element [" + e + "] with timestamp [" + t_e + "] is being buffered for out of order processing"); - if (!this.late_buffer.has(t_e)) { - this.late_buffer.set(t_e, new Set()); - } - (_a = this.late_buffer.get(t_e)) === null || _a === void 0 ? void 0 : _a.add(e); - return; + if (this.time - timestamp > this.max_delay) { + this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is out of the allowed delay [" + ${this.max_delay} + "]`, `CSPARQLWindow`); + console.error("Late element [" + e + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); + } + else { + this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is being buffered for out of order processing`, `CSPARQLWindow`); + console.warn("Late element [" + e + "] with timestamp [" + timestamp + "] is being buffered for out of order processing"); + if (!this.late_buffer.has(timestamp)) { + this.late_buffer.set(timestamp, new Set()); + console.log(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`); } + (_a = this.late_buffer.get(timestamp)) === null || _a === void 0 ? void 0 : _a.add(e); + this.logger.info(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`, `CSPARQLWindow`); } - this.process_event(e, t_e, toEvict); - for (let w of toEvict) { + } + /** + * Evict the windows that are out of the watermark. + * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. + * @returns {void} - The function does not return anything. + */ + evict_windows(toEvict) { + for (const w of toEvict) { console.debug("Evicting [" + w.open + "," + w.close + ")"); this.active_windows.delete(w); } } - process_event(e, t_e, toEvict) { + /** + * Add the window instance to the pending triggers to be emitted. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. + */ + add_window_instance_to_pending_triggers(t_e) { + this.logger.info(`Pending Triggers are : ${JSON.stringify(this.pending_triggers)}`, `CSPARQLWindow`); + console.log(`Size of the pending triggers before adding the window instance: ${this.pending_triggers.size}`); + const window_instance = this.get_window_instance(t_e); + if (this.hasWindowInstance(this.pending_triggers, window_instance)) { + return; + } + else { + this.pending_triggers.add(window_instance); + } + } + /** + * Process the event and update the watermark . + * @param {Quad} e - The event to be processed of the form {subject, predicate, object, graph}. + * @param {number} t_e - The timestamp of the event. + * @returns {Set} - The set of windows to be evicted from the window to be processed by the R2R Operator. + */ + process_event(e, t_e) { + const toEvict = new Set(); this.scope(t_e); - for (let w of this.active_windows.keys()) { + for (const w of this.active_windows.keys()) { if (w.open <= t_e && t_e < w.close) { - let temp_window = this.active_windows.get(w); + const temp_window = this.active_windows.get(w); if (temp_window) { temp_window.add(e, t_e); } } - else if (t_e > w.close) { + else if (t_e >= w.close) { toEvict.add(w); } } - this.emit_on_trigger(t_e); + this.update_watermark(t_e); + this.add_window_instance_to_pending_triggers(t_e); + return toEvict; } - emit_on_trigger(t_e) { - let max_window = null; - let max_time = 0; + /** + * Get the window instance for the given timestamp. + * @param {number} t_e - The timestamp for which the window instance is to be retrieved. + * @returns {WindowInstance} - The window instance for the given timestamp. + */ + get_window_instance(t_e) { + const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; + const o_i = c_sup - this.width; + return new WindowInstance(o_i, o_i + this.width); + } + /** + * Updating the watermark. + * @param {number} new_time - The new watermark to be set. + * @returns {void} - The function does not return anything. + */ + update_watermark(new_time) { + if (new_time > this.current_watermark) { + this.current_watermark = new_time; + this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); + this.evict_and_trigger_on_watermark(); + } + else { + console.error("Watermark is not increasing"); + } + } + /** + * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. + */ + evict_and_trigger_on_watermark() { + // Evict windows that are out of the watermark and should be evicted. + const to_evict = new Set(); + // Checking all of the currently active windows. this.active_windows.forEach((value, window) => { - if (this.compute_report(window, value, t_e)) { - if (window.close > max_time) { - max_time = window.close; - max_window = window; - } + // If the window is out of the watermark, add it to the eviction list, i.e if it is less than or + // equal to the current watermark minus the maximum delay. + if (window.close <= this.current_watermark - this.max_delay) { + // Add the window to the eviction list. + to_evict.add(window); } }); - if (max_window) { - if (this.tick == Tick.TimeDriven) { - if (t_e > this.time) { - this.time = t_e; - this.emitter.emit('RStream', this.active_windows.get(max_window)); - // @ts-ignore - console.log("Window [" + max_window.open + "," + max_window.close + ") triggers. Content: " + this.active_windows.get(max_window)); + this.logger.info(`Current watermark: ${this.current_watermark} to emit triggers for the window`, `CSPARQLWindow`); + // Emit triggers for the windows that are within the watermark, if any. + this.emit_on_trigger(this.current_watermark); + // Evict the windows that are out of the watermark. + for (const window of to_evict) { + this.active_windows.delete(window); + console.debug(`Watermark evicting window ${window.getDefinition()}`); + } + } + /** + * Emit the triggers for the windows that are within the watermark. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. + */ + emit_on_trigger(t_e) { + this.pending_triggers.forEach((window) => { + this.logger.info(`Emitting triggers for the window ${window.getDefinition()}`, `CSPARQLWindow`); + const content = this.get_quads_from_active_windows(this.active_windows, window); + if (content && content.len() > 0) { + let should_emit = false; + if (this.report == ReportStrategy.OnWindowClose) { + if (window.close <= t_e) { + should_emit = true; + } + } + else if (this.report == ReportStrategy.OnContentChange) { + should_emit = true; + } + else { + should_emit = false; + } + if (should_emit) { + // this.time = t_e; + if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { + if (window.has_triggered) { + this.logger.info(`Window ${window.getDefinition()} is already triggered so not triggering it again.`, `CSPARQLWindow`); + } + else { + if (content.len() > 0) { + this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); + window.set_triggered(); + this.emitter.emit('RStream', content); + } + else { + this.logger.info(`Window ${window.getDefinition()} has no data.`, `CSPARQLWindow`); + } + } + } + this.pending_triggers.delete(window); + } + else { + console.error("Window [" + window.open + "," + window.close + ") should not trigger"); } } - } + }); } + /** + * Get the current time of the window. + * @returns {number} - The current time of the window. + */ + get_current_watermark() { + return this.current_watermark; + } + /** + * Compute the report based on the window instance and the content of the window. + * @param {WindowInstance} w - The window instance for which the report is to be computed. + * @param {QuadContainer} content - The content of the window (which is a QuadContainer). + * @param {number} timestamp - The timestamp of the event to be processed. + * @returns {boolean} - True if the report is to be computed, else false. + */ compute_report(w, content, timestamp) { if (this.report == ReportStrategy.OnWindowClose) { return w.close < timestamp; } + else if (this.report == ReportStrategy.OnContentChange) { + return true; + } return false; } + /** + * Scope the window based on the given timestamp. + * @param {number} t_e - The timestamp of the event to be processed. + * @returns {void} - The function does not return anything. + */ scope(t_e) { - let c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; + const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; let o_i = c_sup - this.width; - do { + while (o_i <= t_e) { computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); o_i += this.slide; - } while (o_i <= t_e); + } } + /* eslint-disable no-unused-vars */ + /** + * Subscribe to the window based on the output stream and the callback function. + * @param {'RStream' | 'IStream' | 'DStream'} output - The output stream to which the window is to be subscribed. The output stream can be one of {'RStream', 'IStream', 'DStream'}. + * @param {(QuadContainer) => void} call_back - The callback function to be called when the window emits the triggers. + * @returns {void} - The function does not return anything. + */ subscribe(output, call_back) { this.emitter.on(output, call_back); } + /* eslint-enable no-unused-vars */ + /** + * Process the late elements that are out of order. + * The function is currently called periodically based on the slide of the window. + * @returns {void} - The function does not return anything. + */ process_late_elements() { - this.late_buffer.forEach((elements, timestamp) => { - elements.forEach((element) => { - let to_evict = new Set(); - this.process_event(element, timestamp, to_evict); - for (let w of to_evict) { - console.debug("Evicting [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } + if (this.late_buffer.size == 0) { + return; + } + else { + this.logger.info(`Processing late elements for the window with the late_buffer size ${this.late_buffer.size}`, `CSPARQLWindow`); + const sortedLateBuffer = Array.from(this.late_buffer.entries()).sort(([timestampA], [timestampB]) => timestampA - timestampB); + sortedLateBuffer.forEach(([timestamp, elements]) => { + elements.forEach((element) => { + const to_evict = new Set(); + this.process_event(element, timestamp); + for (const w of to_evict) { + console.debug("Evicting Late [" + w.open + "," + w.close + ")"); + this.active_windows.delete(w); + } + }); }); - }); - this.late_buffer.clear(); + this.late_buffer.clear(); + } } + /** + * Set the current time to the given value. + * @param {number} t - The time to be set. + * @returns {void} - The function does not return anything. + */ set_current_time(t) { this.time = t; } + set_max_delay(delay) { + this.max_delay = delay; + } + /** + * Set the watermark to the given value. + * @param {number} t - The watermark to be set. + * @returns {void} - The function does not return anything. + */ + set_current_watermark(t) { + this.current_watermark = t; + } + /** + * Get the quads from the active windows based on the given window instance. The function is used to get the content of the window based on the window instance. + * @param {Map} map - The map of the active windows. + * @param {WindowInstance} target - The window instance for which the content is to be retrieved. + * @returns {QuadContainer | undefined} - The content of the window instance if it exists, else undefined. + */ + get_quads_from_active_windows(map, target) { + for (const [key, value] of map.entries()) { + if (key.open === target.open && key.close === target.close && key.has_triggered === target.has_triggered) { + return value; + } + } + return undefined; + } + /** + * Check if the window instance is present in the set of window instances. + * @param {Set} set - The set of window instances. + * @param {WindowInstance} window - The window instance to be checked. + * @returns {boolean} - True if the window instance is present in the set, else false. + */ + hasWindowInstance(set, window) { + for (const elem of set) { + if (elem.open === window.open && elem.close === window.close) { + return true; + } + } + return false; + } + /** + * Get a string representation of the CSPARQLWindow definition. + * The function is used to get the definition of the CSPARQLWindow in a string format. + * @returns {string} - The string representation of the CSPARQLWindow definition. + */ + getCSPARQLWindowDefinition() { + const windowDefinitions = []; + for (const [window] of this.active_windows.entries()) { + windowDefinitions.push(window.getDefinition()); + } + return `CSPARQLWindow { + name: ${this.name}, + width: ${this.width}, + slide: ${this.slide}, + current_time: ${this.time}, + current_watermark: ${this.current_watermark}, + report_strategy: ${ReportStrategy[this.report]}, + tick: ${Tick[this.tick]}, + active_windows: [${windowDefinitions.join(", ")}] + }`; + } } exports.CSPARQLWindow = CSPARQLWindow; -function computeWindowIfAbsent(map, key, mappingFunction) { - let val = map.get(key); +/* eslint-disable no-unused-vars */ +/** + * Compute the window if absent based on the given window instance and the mapping function. + * @param {Map} map - The map of the active windows. + * @param {WindowInstance} window - The window instance of the form {open, close, has_triggered}. + * @param {mappingFunction} mappingFunction - The mapping function to be applied to the window instance. + */ +function computeWindowIfAbsent(map, window, mappingFunction) { let found = false; - for (let w of map.keys()) { - if (w.is_same(key)) { + for (const w of map.keys()) { + if (w.is_same(window)) { found = true; - val = map.get(w); break; } } if (!found) { - val = mappingFunction(key); - map.set(key, val); + map.set(window, mappingFunction(window)); } - return val; } +/* eslint-enable no-unused-vars */ +function gammaOperator(shape, scale) { + return ss.gamma(shape, scale); +} +exports.gammaOperator = gammaOperator; diff --git a/dist/operators/s2r.test.js b/dist/operators/s2r.test.js index 623e07b..511cf62 100644 --- a/dist/operators/s2r.test.js +++ b/dist/operators/s2r.test.js @@ -1,114 +1,320 @@ "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); +const n3_1 = require("n3"); +const { namedNode, literal, defaultGraph, quad } = n3_1.DataFactory; const s2r_1 = require("./s2r"); -const N3 = require('n3'); -const { DataFactory } = N3; -const { namedNode, literal, defaultGraph, quad } = DataFactory; +/** + * Generate data for the test cases. + * @param {number} num_events - The number of events to generate. + * @param {CSPARQLWindow} csparqlWindow - The CSPARQL Window to which the data is to be added. + * @returns {void} - Returns nothing. + */ function generate_data(num_events, csparqlWindow) { for (let i = 0; i < num_events; i++) { const stream_element = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); csparqlWindow.add(stream_element, i); } } -test('create_graph_container', () => { - const quad1 = quad(namedNode('https://ruben.verborgh.org/profile/#me'), namedNode('http://xmlns.com/foaf/0.1/givenName'), literal('Ruben', 'en'), defaultGraph()); - const quad2 = quad(namedNode('https://ruben.verborgh.org/profile/#me'), namedNode('http://xmlns.com/foaf/0.1/lastName'), literal('Verborgh', 'en'), defaultGraph()); - let content = new Set; - content.add(quad1); - content.add(quad2); - let container = new s2r_1.QuadContainer(content, 0); - expect(container.len()).toBe(2); - expect(container.last_time_changed()).toBe(0); +describe('CSPARQLWindow', () => { + test('create_graph_container', () => { + const quad1 = quad(namedNode('https://ruben.verborgh.org/profile/#me'), namedNode('http://xmlns.com/foaf/0.1/givenName'), literal('Ruben', 'en'), defaultGraph()); + const quad2 = quad(namedNode('https://ruben.verborgh.org/profile/#me'), namedNode('http://xmlns.com/foaf/0.1/lastName'), literal('Verborgh', 'en'), defaultGraph()); + const content = new Set; + content.add(quad1); + content.add(quad2); + const container = new s2r_1.QuadContainer(content, 0); + expect(container.len()).toBe(2); + expect(container.last_time_changed()).toBe(0); + }); + test('add_to_window', () => { + const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); + const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); + csparqlWindow.add(quad1, 0); + }); + test('test_scope', () => { + const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); + csparqlWindow.scope(4); + const num_active_windows = csparqlWindow.active_windows.size; + /** + * Open windows: + * [-6, 4) + * [-4, 6) + * [-2, 8) + * [0, 10) + * [2, 12) + * [4, 14). + */ + expect(num_active_windows).toBe(6); + }); + test('test_evictions', () => { + const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); + generate_data(10, csparqlWindow); + expect(csparqlWindow.active_windows.size).toBe(5); + }); + test('test_stream_consumer', () => { + const recevied_data = new Array(); + const received_elementes = new Array; + const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); + // register window consumer + csparqlWindow.subscribe('RStream', function (data) { + console.log('Foo raised, Args:', data); + console.log('dat size', data.elements.size); + recevied_data.push(data); + data.elements.forEach(item => received_elementes.push(item)); + }); + // generate some data + generate_data(10, csparqlWindow); + expect(recevied_data.length).toBe(4); + expect(received_elementes.length).toBe(2 + 4 + 6 + 8); + }); + test('test_content_get', () => { + const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); + // generate some data + generate_data(10, csparqlWindow); + const content = csparqlWindow.getContent(10); + expect(content).toBeDefined(); + if (content) { + expect(content.elements.size).toBe(10); + } + const undefinedContent = csparqlWindow.getContent(20); + expect(undefinedContent).toBeUndefined(); + }); }); -test('add_to_window', () => { - const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - const quad2 = quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - csparqlWindow.add(quad, 0); +describe('CSPARQLWindow OOO', () => { + let window; + const width = 10; + const slide = 5; + const startTime = 0; + const maxDelay = 2; + const quad1 = quad(n3_1.DataFactory.blankNode(), n3_1.DataFactory.namedNode('predicate'), n3_1.DataFactory.literal('object1')); + const quad2 = quad(n3_1.DataFactory.blankNode(), n3_1.DataFactory.namedNode('predicate'), n3_1.DataFactory.literal('object2')); + beforeEach(() => { + window = new s2r_1.CSPARQLWindow('testWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, startTime, maxDelay); + }); + afterEach(() => { + }); + test('should initialize correctly', () => { + expect(window.name).toBe('testWindow'); + expect(window.width).toBe(width); + expect(window.slide).toBe(slide); + expect(window.time).toBe(startTime); + expect(window.max_delay).toBe(maxDelay); + }); + test('should add element to the active window', () => { + window.add(quad1, 1); + const quadContainer = window.getContent(1); + expect(quadContainer === null || quadContainer === void 0 ? void 0 : quadContainer.len()).toBe(1); + }); + test('check if event is late', () => { + window.add(quad1, 1); + window.set_current_time(8); + expect(window.if_event_late(2)).toBe(true); + }); + test('should add element to the late buffer', () => { + window.add(quad1, 5); + window.set_current_time(8); + // Add late element + window.buffer_late_event(quad2, 3); + // rejects if it is outside the allowed max_delay window + expect(window.late_buffer.size).toBe(0); + // Adds another late element + window.buffer_late_event(quad2, 7); + // accepts as it is inside the allowed max_delay window + expect(window.late_buffer.size).toBe(1); + }); + test('should buffer late elements', () => { + var _a; + window.add(quad1, 1); + window.add(quad2, 0); + expect(window.late_buffer.size).toBe(1); + expect((_a = window.late_buffer.get(0)) === null || _a === void 0 ? void 0 : _a.has(quad2)).toBe(true); + }); + test('should evict windows based on watermark', () => { + window.add(quad1, 1); + window.set_current_time(12); + window.add(quad2, 12); + const activeWindows = Array.from(window.active_windows.keys()); + expect(activeWindows.length).toBe(2); + window.update_watermark(22); + expect(window.active_windows.size).toBe(0); + }); + test('should update the watermark', () => { + expect(window.get_current_watermark()).toBe(0); + window.update_watermark(10); + expect(window.get_current_watermark()).toBe(10); + }); + test('should return the window instance', () => { + const windowInstance = window.get_window_instance(1); + expect(windowInstance.open).toBe(-5); + expect(windowInstance.close).toBe(5); + const windowInstance2 = window.get_window_instance(6); + expect(windowInstance2.open).toBe(0); + expect(windowInstance2.close).toBe(10); + }); + test('should process late elements', () => { + window.add(quad1, 6); + window.add(quad2, 4); // Late element + window.process_late_elements(); + const quadContainer = window.getContent(0); + console.log(quadContainer); + expect(quadContainer === null || quadContainer === void 0 ? void 0 : quadContainer.len()).toBe(1); + }); + test('should update current time when adding a new element', () => { + const initial_time = window.time; + const new_time = initial_time + 10; + window.add(quad1, new_time); + expect(window.time).toBe(new_time); + }); + test('should trigger on window change', (done) => { + const report_window = new s2r_1.CSPARQLWindow('reportWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, startTime, maxDelay); + const callback = jest.fn((data) => { + console.log('Callback called'); + expect(data.len()).toBe(1); + expect(data.elements.has(quad1)).toBeTruthy(); + done(); + }); + report_window.subscribe('RStream', callback); + // Add first element to the window + report_window.add(quad1, 1); + // Now moving the time forward to trigger the window close report strategy + report_window.set_current_time(11); + report_window.update_watermark(23); + expect(callback).toHaveBeenCalledTimes(1); + }); }); -test('test_scope', () => { - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - csparqlWindow.scope(4); - let num_active_windows = csparqlWindow.active_windows.size; - /** - * open windows: - * [-6, 4) - * [-4, 6) - * [-2, 8) - * [0, 10) - * [2, 12) - * [4, 14) - */ - expect(num_active_windows).toBe(6); +describe('CSPARQL Window Watermark Test', () => { + let csparqlWindow; + let window1; + let window2; + let quadContainer1; + let quadContainer2; + let quad1; + beforeEach(() => { + quad1 = {}; + csparqlWindow = new s2r_1.CSPARQLWindow('testWindow', 10, 5, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 5); + window1 = new s2r_1.WindowInstance(0, 10); + window2 = new s2r_1.WindowInstance(5, 15); + quadContainer1 = new s2r_1.QuadContainer(new Set([quad1]), 5); + quadContainer2 = new s2r_1.QuadContainer(new Set([quad1]), 11); + csparqlWindow.active_windows.set(window1, quadContainer1); + csparqlWindow.active_windows.set(window2, quadContainer2); + }); + afterEach(() => { + csparqlWindow.set_current_watermark(0); + }); + it('should evict windows out of the watermark', () => { + csparqlWindow.update_watermark(25); + csparqlWindow.evict_and_trigger_on_watermark(); + expect(csparqlWindow.active_windows.has(window1)).toBeFalsy(); + expect(csparqlWindow.active_windows.has(window2)).toBeFalsy(); + expect(csparqlWindow.active_windows.size).toBe(0); + }); + it('should not evict windows within the watermark', () => { + csparqlWindow.set_current_watermark(0); + expect(csparqlWindow.active_windows.has(window1)).toBeTruthy(); + expect(csparqlWindow.active_windows.has(window2)).toBeTruthy(); + }); + it('should not evict windows if the current watermark is still under the decided max delay allowed', () => { + csparqlWindow.update_watermark(10); + csparqlWindow.evict_and_trigger_on_watermark(); + expect(csparqlWindow.active_windows.has(window1)).toBeTruthy(); + expect(csparqlWindow.active_windows.has(window2)).toBeTruthy(); + }); }); -test('test_evictions', () => { - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - generate_data(10, csparqlWindow); - expect(csparqlWindow.active_windows.size).toBe(5); +describe('CSPARQLWindow emit_on_trigger', () => { + let csparqlWindow; + let quad1; + let window1; + let quadContainer1; + beforeEach(() => { + quad1 = {}; + csparqlWindow = new s2r_1.CSPARQLWindow('testWindow', 10, 5, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 5); + window1 = new s2r_1.WindowInstance(0, 10); + quadContainer1 = new s2r_1.QuadContainer(new Set([quad1]), 5); + csparqlWindow.active_windows.set(window1, quadContainer1); + csparqlWindow.pending_triggers.add(window1); + }); + it('should emit the correct content when the window is triggered', () => { + const emitSpy = jest.spyOn(csparqlWindow.emitter, 'emit'); + csparqlWindow.set_current_watermark(15); + csparqlWindow.emit_on_trigger(15); + expect(emitSpy).toHaveBeenCalledWith('RStream', quadContainer1); + }); + it('should not emit if the window has no content', () => { + const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); + csparqlWindow.active_windows.delete(window1); // Remove the content from the window + csparqlWindow.emit_on_trigger(15); + expect(emit_spy).not.toHaveBeenCalled(); + }); + it('should emit only if the window has not already triggered', () => { + const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); + window1.has_triggered = true; // Set the window to already triggered + csparqlWindow.emit_on_trigger(15); + expect(emit_spy).not.toHaveBeenCalled(); + }); + it('should clear pending triggers once the window is emitted for processing by the R2R operator', () => { + csparqlWindow.emit_on_trigger(15); + expect(csparqlWindow.pending_triggers.size).toBe(0); + }); + it('should handle different report strategies', () => { + csparqlWindow.report = s2r_1.ReportStrategy.OnContentChange; + const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); + csparqlWindow.emit_on_trigger(15); + expect(emit_spy).toHaveBeenCalledWith('RStream', quadContainer1); + }); }); -test('test_stream_consumer', () => { - let recevied_data = new Array(); - let received_elementes = new Array; - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - // register window consumer - csparqlWindow.subscribe('RStream', function (data) { - console.log('Foo raised, Args:', data); - console.log('dat size', data.elements.size); - recevied_data.push(data); - data.elements.forEach(item => received_elementes.push(item)); - }); - // generate some data - generate_data(10, csparqlWindow); - expect(recevied_data.length).toBe(4); - expect(received_elementes.length).toBe(2 + 4 + 6 + 8); +describe('CSPARQLWindow get quads from active windows', () => { + let csparqlWindow; + let quad1; + let window1; + let quadContainer1; + let window2; + let quadContainer2; + beforeEach(() => { + quad1 = {}; + csparqlWindow = new s2r_1.CSPARQLWindow('testWindow', 10, 5, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 5); + window1 = new s2r_1.WindowInstance(0, 10); + quadContainer1 = new s2r_1.QuadContainer(new Set([quad1]), 9); + window2 = new s2r_1.WindowInstance(5, 15); + quadContainer2 = new s2r_1.QuadContainer(new Set([quad1]), 9); + csparqlWindow.active_windows.set(window1, quadContainer1); + csparqlWindow.active_windows.set(window2, quadContainer2); + }); + it('should return the correct content from the active windows', () => { + const target_window = new s2r_1.WindowInstance(0, 10); + const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); + expect(content).toBe(quadContainer1); + }); + it('should return undefined if no matching window is found', () => { + const target_window = new s2r_1.WindowInstance(10, 20); + const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); + expect(content).toBeUndefined(); + }); + it('should add a window to pending triggers', () => { + csparqlWindow.add(quad1, 2); + const window_instance = csparqlWindow.get_window_instance(2); + expect(hasWindowInstance(csparqlWindow.pending_triggers, window_instance)).toBe(true); + }); }); -test('test_content_get', () => { - let recevied_data = new Array(); - let received_elementes = new Array; - let csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - // generate some data - generate_data(10, csparqlWindow); - let content = csparqlWindow.getContent(10); - expect(content).toBeDefined(); - if (content) { - expect(content.elements.size).toBe(10); +/** + * Check if the set contains the window instance. + * @param {Set} set - The set of window instances. + * @param {WindowInstance} window - The window instance to check. + * @returns {boolean} - True if the window instance is in the set, false otherwise. + */ +function hasWindowInstance(set, window) { + for (const elem of set) { + if (elem.open === window.open && elem.close === window.close) { + return true; + } } - let undefinedContent = csparqlWindow.getContent(20); - expect(undefinedContent).toBeUndefined(); -}); -describe('out_of_order_processing', () => { -}); -test('test_the_max_delay_function', () => { - let window; - const width = 10; - const slide = 5; - const max_delay = 50; - const start_time = 0; - window = new s2r_1.CSPARQLWindow('testWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, start_time, max_delay); - window.subscribe('RStream', (data) => { - console.log(`RStream output: ${data}`); - }); - console.log(window); - window.set_current_time(100); - window.add(quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 18); - window.add(quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 5); - expect(window.active_windows.size).toBe(0); -}); -test('out_of_order_processing', () => { - let window; - const width = 10; - const slide = 5; - const max_delay = 10; - const start_time = 0; - window = new s2r_1.CSPARQLWindow('testWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, start_time, max_delay); - window.subscribe('RStream', (data) => { - console.log(`RStream output: ${data}`); - }); - window.set_current_time(20); - console.log(window); - window.add(quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 28); - window.add(quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 15); - window.add(quad(namedNode('https://rsp.js/test_subject_2'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()), 14); - expect(window.active_windows.size).toBe(2); - clearInterval(window.interval_id); + return false; +} +describe('Gamma Operator', () => { + it('should return the correct gamma value', () => { + const shape = 4; + const scale = 3; + const gamma = (0, s2r_1.gammaOperator)(shape, scale); + console.log(gamma); + }); }); diff --git a/dist/rsp.d.ts b/dist/rsp.d.ts index 9a4d00c..dda5590 100644 --- a/dist/rsp.d.ts +++ b/dist/rsp.d.ts @@ -7,20 +7,69 @@ export type binding_with_timestamp = { timestamp_from: number; timestamp_to: number; }; +/** + * RDF Stream Class to represent the stream of RDF Data. + * It emits the data to the CSPARQL Window for processing. + */ export declare class RDFStream { name: string; emitter: EventEmitter; + /** + * Constructor for the RDFStream class. + * @param {string} name - The name of the stream to be created. + * @param {CSPARQLWindow} window - The CSPARQL Window to which the stream is to be processed and emitted by the S2R Operator. + */ constructor(name: string, window: CSPARQLWindow); + /** + * Adds the event to the RDF Stream to be processed by the RSP Engine. + * @param {Set} event - The event to be added to the stream. The event is a set of quads of the form {subject, predicate, object, graph}. + * @param {number} ts - The timestamp of the event. + */ add(event: Set, ts: number): void; } +/** + * RSPEngine Class to represent the RSP Engine. + * It contains the windows and streams of the RSP Engine. + */ export declare class RSPEngine { windows: Array; streams: Map; + max_delay: number; + time_to_trigger_processing_late_elements: number; private r2r; private logger; - constructor(query: string); + /** + * Constructor for the RSPEngine class. + * @param {string} query - The query to be executed by the RSP Engine. + * @param {{max_delay: number, time_to_trigger_processing_late_elements: number}} opts - The options for the RSP Engine for processing the data if they are late or out of order. + * @param {number} opts.max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. + * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. + * @param {number} opts.time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements in the window. + * This field is optional and defaults to 60000 milliseconds. + */ + constructor(query: string, opts?: { + max_delay?: number; + time_to_trigger_processing_late_elements?: number; + }); + /** + * Register the RSP Engine to start processing the data. + * @returns {any} - The event emitter to emit the data to the RSP Engine. + */ register(): any; + /** + * Get the stream by the stream name. + * @param {string} stream_name - The name of the stream to be fetched. + * @returns {RDFStream | undefined} - The stream with the given name. + */ getStream(stream_name: string): RDFStream | undefined; + /** + * Add static data to the RSP Engine. + * @param {Quad} static_data - The static data to be added to the RSP Engine. + */ addStaticData(static_data: Quad): void; + /** + * Get all the streams of the RSP Engine. + * @returns {string[]} - The list of all the streams in the RSP Engine. + */ get_all_streams(): string[]; } diff --git a/dist/rsp.js b/dist/rsp.js index 273874b..d1abe46 100644 --- a/dist/rsp.js +++ b/dist/rsp.js @@ -39,12 +39,21 @@ const LOG_CONFIG = __importStar(require("./config/log_config.json")); const Logger_1 = require("./util/Logger"); const N3 = require('n3'); const { DataFactory } = N3; -const { namedNode, literal, defaultGraph, quad } = DataFactory; +const { namedNode } = DataFactory; const rspql_1 = require("./rspql"); +/** + * RDF Stream Class to represent the stream of RDF Data. + * It emits the data to the CSPARQL Window for processing. + */ class RDFStream { + /** + * Constructor for the RDFStream class. + * @param {string} name - The name of the stream to be created. + * @param {CSPARQLWindow} window - The CSPARQL Window to which the stream is to be processed and emitted by the S2R Operator. + */ constructor(name, window) { this.name = name; - let EventEmitter = require('events').EventEmitter; + const EventEmitter = require('events').EventEmitter; this.emitter = new EventEmitter(); this.emitter.on('data', (quadcontainer) => { // @ts-ignore @@ -53,73 +62,121 @@ class RDFStream { window.add(quadcontainer.elements, quadcontainer.last_time_changed()); }); } + /** + * Adds the event to the RDF Stream to be processed by the RSP Engine. + * @param {Set} event - The event to be added to the stream. The event is a set of quads of the form {subject, predicate, object, graph}. + * @param {number} ts - The timestamp of the event. + */ add(event, ts) { this.emitter.emit('data', new s2r_1.QuadContainer(event, ts)); } } exports.RDFStream = RDFStream; +/** + * RSPEngine Class to represent the RSP Engine. + * It contains the windows and streams of the RSP Engine. + */ class RSPEngine { - constructor(query) { + /** + * Constructor for the RSPEngine class. + * @param {string} query - The query to be executed by the RSP Engine. + * @param {{max_delay: number, time_to_trigger_processing_late_elements: number}} opts - The options for the RSP Engine for processing the data if they are late or out of order. + * @param {number} opts.max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. + * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. + * @param {number} opts.time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements in the window. + * This field is optional and defaults to 60000 milliseconds. + */ + constructor(query, opts) { this.windows = new Array(); + if (opts) { + this.max_delay = opts.max_delay ? opts.max_delay : 0; + this.time_to_trigger_processing_late_elements = opts.time_to_trigger_processing_late_elements ? opts.time_to_trigger_processing_late_elements : 0; + } + else { + this.max_delay = 0; + this.time_to_trigger_processing_late_elements = 60000; + } this.streams = new Map(); const logLevel = Logger_1.LogLevel[LOG_CONFIG.log_level]; this.logger = new Logger_1.Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination); - let parser = new rspql_1.RSPQLParser(); - let parsed_query = parser.parse(query); + const parser = new rspql_1.RSPQLParser(); + const parsed_query = parser.parse(query); parsed_query.s2r.forEach((window) => { - let windowImpl = new s2r_1.CSPARQLWindow(window.window_name, window.width, window.slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, LOG_CONFIG.max_delay); + const windowImpl = new s2r_1.CSPARQLWindow(window.window_name, window.width, window.slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, this.max_delay); this.windows.push(windowImpl); - let stream = new RDFStream(window.stream_name, windowImpl); + const stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); }); this.r2r = new r2r_1.R2ROperator(parsed_query.sparql); } + /** + * Register the RSP Engine to start processing the data. + * @returns {any} - The event emitter to emit the data to the RSP Engine. + */ register() { - let EventEmitter = require('events').EventEmitter; - let emitter = new EventEmitter(); + const EventEmitter = require('events').EventEmitter; + const emitter = new EventEmitter(); this.windows.forEach((window) => { window.subscribe("RStream", (data) => __awaiter(this, void 0, void 0, function* () { - if (data.len() > 0) { - this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); - // iterate over all the windows - for (let windowIt of this.windows) { - // filter out the current triggering one - if (windowIt != window) { - let currentWindowData = windowIt.getContent(data.last_time_changed()); - if (currentWindowData) { - // add the content of the other windows to the quad container - currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + if (data) { + if (data.len() > 0) { + this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + console.log(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + // iterate over all the windows + for (const windowIt of this.windows) { + // filter out the current triggering one + if (windowIt != window) { + const currentWindowData = windowIt.getContent(data.last_time_changed()); + if (currentWindowData) { + // add the content of the other windows to the quad container + currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + } } } + this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); + const bindingsStream = yield this.r2r.execute(data); + this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + bindingsStream.on('data', (binding) => { + const object_with_timestamp = { + bindings: binding, + timestamp_from: window.t0, + timestamp_to: window.t0 + window.slide + }; + window.t0 += window.slide; + emitter.emit("RStream", object_with_timestamp); + }); + bindingsStream.on('end', () => { + this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + }); + yield bindingsStream; } - this.logger.info(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); - let bindingsStream = yield this.r2r.execute(data); - bindingsStream.on('data', (binding) => { - let object_with_timestamp = { - bindings: binding, - timestamp_from: window.t0, - timestamp_to: window.t0 + window.slide - }; - window.t0 += window.slide; - emitter.emit("RStream", object_with_timestamp); - }); - bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); - }); - yield bindingsStream; } })); }); return emitter; } + /** + * Get the stream by the stream name. + * @param {string} stream_name - The name of the stream to be fetched. + * @returns {RDFStream | undefined} - The stream with the given name. + */ getStream(stream_name) { return this.streams.get(stream_name); } + /** + * Add static data to the RSP Engine. + * @param {Quad} static_data - The static data to be added to the RSP Engine. + */ addStaticData(static_data) { this.r2r.addStaticData(static_data); } + /** + * Get all the streams of the RSP Engine. + * @returns {string[]} - The list of all the streams in the RSP Engine. + */ get_all_streams() { - let streams = []; + const streams = []; this.streams.forEach((stream) => { streams.push(stream.name); }); diff --git a/dist/rsp.test.js b/dist/rsp.test.js index 35d7bac..4138ce5 100644 --- a/dist/rsp.test.js +++ b/dist/rsp.test.js @@ -12,7 +12,13 @@ Object.defineProperty(exports, "__esModule", { value: true }); const rsp_1 = require("./rsp"); const N3 = require('n3'); const { DataFactory } = N3; -const { namedNode, defaultGraph, quad } = DataFactory; +const { namedNode, defaultGraph, quad, literal } = DataFactory; +/** + * Generate data for the test. + * @param {number} num_events - The number of events to generate. + * @param {RDFStream[]} rdfStreams - The RDF Streams to which the data is to be added. + * @returns {void} - The data generation. + */ function generate_data(num_events, rdfStreams) { for (let i = 0; i < num_events; i++) { rdfStreams.forEach((stream) => { @@ -21,27 +27,35 @@ function generate_data(num_events, rdfStreams) { }); } } +/** + * Generate data for the test. + * @param {number} num_events - The number of events to generate. + * @param {RDFStream} rdfStream - The RDF Stream to which the data is to be added. + * @returns {Promise} - The promise of the data generation. + */ function generate_data2(num_events, rdfStream) { - for (let i = 0; i < num_events; i++) { - const stream_element = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('http://rsp.js/test_property2'), namedNode('http://rsp.js/test_object2'), defaultGraph()); - rdfStream.add(stream_element, i); - } + return __awaiter(this, void 0, void 0, function* () { + for (let i = 0; i < num_events; i++) { + const stream_element = quad(namedNode('https://rsp.js/test_subject2_' + i), namedNode('http://rsp.js/test_property2'), namedNode('http://rsp.js/test_object2'), defaultGraph()); + rdfStream.add(stream_element, i); + } + }); } test('rsp_consumer_test', () => __awaiter(void 0, void 0, void 0, function* () { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE{ + WHERE { WINDOW :w1 { ?s ?p ?o} }`; - let rspEngine = new rsp_1.RSPEngine(query); - let stream = rspEngine.getStream("https://rsp.js/stream1"); - let emitter = rspEngine.register(); - let results = new Array(); + const rspEngine = new rsp_1.RSPEngine(query); + const stream = rspEngine.getStream("https://rsp.js/stream1"); + const emitter = rspEngine.register(); + const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { - console.log("received results"); + console.log(`received result ${object.bindings.toString()}`); results.push(object.bindings.toString()); }); if (stream) { @@ -51,10 +65,9 @@ test('rsp_consumer_test', () => __awaiter(void 0, void 0, void 0, function* () { const sleep = (ms) => new Promise(r => setTimeout(r, ms)); yield sleep(2000); expect(results.length).toBe(2 + 4 + 6 + 8); - console.log(results); })); test('rsp_multiple_same_window_test', () => __awaiter(void 0, void 0, void 0, function* () { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -64,11 +77,12 @@ test('rsp_multiple_same_window_test', () => __awaiter(void 0, void 0, void 0, fu WINDOW :w1 { ?s ?p ?o} WINDOW :w2 { ?s ?p ?o} }`; - let rspEngine = new rsp_1.RSPEngine(query); - let stream1 = rspEngine.getStream("https://rsp.js/stream1"); - let stream2 = rspEngine.getStream("https://rsp.js/stream2"); - let emitter = rspEngine.register(); - let results = new Array(); + const rspEngine = new rsp_1.RSPEngine(query); + const stream1 = rspEngine.getStream("https://rsp.js/stream1"); + const stream2 = rspEngine.getStream("https://rsp.js/stream2"); + const emitter = rspEngine.register(); + const results = new Array(); + console.log(rspEngine.get_all_streams()); // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); @@ -84,7 +98,7 @@ test('rsp_multiple_same_window_test', () => __awaiter(void 0, void 0, void 0, fu console.log(results); })); test('rsp_multiple_difff_window_test', () => __awaiter(void 0, void 0, void 0, function* () { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -94,11 +108,11 @@ test('rsp_multiple_difff_window_test', () => __awaiter(void 0, void 0, void 0, f WINDOW :w1 { ?s ?p ?o} WINDOW :w2 { ?s ?p2 ?o2} }`; - let rspEngine = new rsp_1.RSPEngine(query); - let stream1 = rspEngine.getStream("https://rsp.js/stream1"); - let stream2 = rspEngine.getStream("https://rsp.js/stream2"); - let emitter = rspEngine.register(); - let results = new Array(); + const rspEngine = new rsp_1.RSPEngine(query); + const stream1 = rspEngine.getStream("https://rsp.js/stream1"); + const stream2 = rspEngine.getStream("https://rsp.js/stream2"); + const emitter = rspEngine.register(); + const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { console.log("received results"); @@ -119,7 +133,7 @@ test('rsp_multiple_difff_window_test', () => __awaiter(void 0, void 0, void 0, f console.log(results); })); test('rsp_static_plus_window_test', () => __awaiter(void 0, void 0, void 0, function* () { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -128,15 +142,15 @@ test('rsp_static_plus_window_test', () => __awaiter(void 0, void 0, void 0, func ?o :hasInfo :someInfo. WINDOW :w1 { ?s ?p ?o} }`; - let rspEngine = new rsp_1.RSPEngine(query); + const rspEngine = new rsp_1.RSPEngine(query); const static_data = quad(namedNode('http://rsp.js/test_object'), namedNode('https://rsp.js/hasInfo'), namedNode('https://rsp.js/someInfo'), defaultGraph()); rspEngine.addStaticData(static_data); - let stream1 = rspEngine.getStream("https://rsp.js/stream1"); - let emitter = rspEngine.register(); - let results = new Array(); + const stream1 = rspEngine.getStream("https://rsp.js/stream1"); + const emitter = rspEngine.register(); + const results = new Array(); // @ts-ignore emitter.on('RStream', (object) => { - console.log("received results"); + console.log(`received result: ${object.bindings.toString()}`); results.push(object.bindings.toString()); }); if (stream1) { @@ -149,7 +163,7 @@ test('rsp_static_plus_window_test', () => __awaiter(void 0, void 0, void 0, func console.log(results); })); test('test_get_all_streams', () => { - let query = `PREFIX : + const query = `PREFIX : REGISTER RStream AS SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -158,8 +172,208 @@ test('test_get_all_streams', () => { ?o :hasInfo :someInfo. WINDOW :w1 { ?s ?p ?o} }`; - let rspEngine = new rsp_1.RSPEngine(query); - let streams_registered = rspEngine.get_all_streams(); + const rspEngine = new rsp_1.RSPEngine(query); + const streams_registered = rspEngine.get_all_streams(); expect(streams_registered.length).toBe(1); expect(streams_registered[0]).toBe("https://rsp.js/stream1"); }); +test('test_out_of_order_event_processing', () => __awaiter(void 0, void 0, void 0, function* () { + const query = `PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + }`; + const rspEngine = new rsp_1.RSPEngine(query); + const stream = rspEngine.getStream("https://rsp.js/stream1"); + const emitter = rspEngine.register(); + const results = new Array(); + emitter.on('RStream', (object) => { + console.log("received results"); + results.push(object.bindings.toString()); + }); + // @ts-ignore + if (stream) { + generate_data(10, [stream]); + } + if (stream) { + yield generate_data2(10, stream); + } + // expect(results.length).toBe(2 + 4 + 6 + 8 + 2 + 4 + 6 + 8); + console.log(results.length); +})); +test('test setting the max delay for out of order events', () => __awaiter(void 0, void 0, void 0, function* () { + const query = `PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + }`; + const rsp_engine = new rsp_1.RSPEngine(query); + expect(rsp_engine.max_delay).toBe(0); + const rsp_engine_2 = new rsp_1.RSPEngine(query, { + max_delay: 1000, + time_to_trigger_processing_late_elements: 60000 + }); + expect(rsp_engine_2.max_delay).toBe(1000); +})); +test('test out of order processing with different delays', () => __awaiter(void 0, void 0, void 0, function* () { + const query = ` + PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + } + `; + const rsp_engine = new rsp_1.RSPEngine(query); + const stream = rsp_engine.getStream("https://rsp.js/stream1"); + const emitter = rsp_engine.register(); + const results = new Array(); + const event = quad(namedNode(`https://rsp.js/test_subject`), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); + emitter.on('RStream', (object) => { + results.push(object.bindings.toString()); + }); + if (stream) { + stream.add(event, 0); + stream.add(event, 3); + stream.add(event, 1); + stream.add(event, 2); + stream.add(event, 4); + } + const sleep = (ms) => new Promise(r => setTimeout(r, ms)); + yield sleep(2000); + expect(results.length).toBeGreaterThan(0); + console.log(results); +})); +test('test ooo event processing with varying delay settings', () => __awaiter(void 0, void 0, void 0, function* () { + jest.setTimeout(100000); + const query = ` + PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + } + `; + const rsp_engine = new rsp_1.RSPEngine(query, { + max_delay: 1000, + time_to_trigger_processing_late_elements: 1000 + }); + const stream = rsp_engine.getStream("https://rsp.js/stream1"); + const emitter = rsp_engine.register(); + const results = new Array(); + const event = quad(namedNode(`https://rsp.js/test_subject`), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); + emitter.on('RStream', (object) => { + results.push(object.bindings.toString()); + }); + const sleep = (ms) => new Promise(r => setTimeout(r, ms)); + if (stream) { + stream.add(event, 0); + stream.add(event, 3); + stream.add(event, 1); + stream.add(event, 2); + stream.add(event, 4); + stream.add(event, 5); + stream.add(event, 6); + stream.add(event, 7); + stream.add(event, 8); + stream.add(event, 9); + stream.add(event, 7); + } + yield sleep(2000); + expect(results.length).toBeGreaterThan(0); + console.log(results); +})); +describe('test the rsp engine with out of order processing with various data frequency', () => { + const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; + const location_two = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-y/"; + const location_three = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-z/"; + const query = ` + PREFIX : + PREFIX saref: + PREFIX dahccsensors: + PREFIX func: + REGISTER RStream AS + SELECT ?o + + FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 6000 STEP 2000] + FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 6000 STEP 2000] + + WHERE { + WINDOW :w1 { + ?s saref:hasValue ?o . + ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + WINDOW :w2 { + ?s saref:hasValue ?o2 . + ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + WINDOW :w3 { + ?s saref:hasValue ?o3 . + ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + } + `; + test('testing RSP Engine with 4Hz data frequency', () => __awaiter(void 0, void 0, void 0, function* () { + jest.setTimeout(100000); + const rsp_engine = new rsp_1.RSPEngine(query, { + max_delay: 1000, + time_to_trigger_processing_late_elements: 60000 + }); + const emitter = rsp_engine.register(); + const results = new Array(); + const stream_x = yield rsp_engine.getStream(location_one); + const stream_y = yield rsp_engine.getStream(location_two); + const stream_z = yield rsp_engine.getStream(location_three); + if (stream_x && stream_y && stream_z) { + const rdf_streams = [stream_x, stream_y, stream_z]; + generate_dummy_data(500, rdf_streams, 4); + } + emitter.on('RStream', (object) => { + console.log(object.bindings.toString()); + results.push(object.bindings.toString()); + }); + yield sleep(500000); + console.log(results); + })); +}); +/** + * Generate dummy data for the test. + * @param {number} number_of_events - The number of events to generate. + * @param {RDFStream[]} rdf_streams - The RDF Streams to which the data is to be added. + * @param {number} frequency - The frequency of the data to be generated. + * @returns {Promise} - The promise of the dummy data generation. + */ +function generate_dummy_data(number_of_events, rdf_streams, frequency) { + return __awaiter(this, void 0, void 0, function* () { + let events_generated = 0; + const sleep_interval = 1000 / frequency; + while (events_generated < number_of_events) { + rdf_streams.forEach((stream) => { + if (events_generated < number_of_events) { + const stream_element = quad(namedNode('https://rsp.js/test_subject_' + events_generated), namedNode('https://saref.etsi.org/core/hasValue'), literal(`${Math.random() * 10}`, namedNode('http://www.w3.org/2001/XMLSchema#integer')), defaultGraph()); + const stream_element_two = quad(namedNode('https://rsp.js/test_subject_' + events_generated), namedNode('https://saref.etsi.org/core/relatesToProperty'), namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), defaultGraph()); + const timestamp = Date.now(); + stream.add(stream_element, timestamp); + stream.add(stream_element_two, timestamp); + events_generated = events_generated + 1; + } + }); + yield sleep(sleep_interval); + } + }); +} +/** + * Sleep function. + * @param {number} ms - The time to sleep in milliseconds. + * @returns {Promise} - The promise of the sleep function. + */ +function sleep(ms) { + return new Promise(resolve => setTimeout(resolve, ms)); +} diff --git a/dist/rspql.d.ts b/dist/rspql.d.ts index 5f3d852..6e71de6 100644 --- a/dist/rspql.d.ts +++ b/dist/rspql.d.ts @@ -1,24 +1,62 @@ +/** + * Parser for RSP-QL queries to extract the SPARQL query and the window definitions. + */ export declare class ParsedQuery { sparql: string; r2s: R2S; s2r: Array; + /** + * Constructor to initialize the ParsedQuery object with default values. + */ constructor(); + /** + * Set the SPARQL query for the ParsedQuery object. + * @param {string} sparql - The SPARQL query to be set. + */ set_sparql(sparql: string): void; + /** + * Set the R2S operator for the ParsedQuery object. + * @param {R2S} r2s - The R2S operator to be set. + */ set_r2s(r2s: R2S): void; + /** + * Add a S2R window definition to the ParsedQuery object. + * @param {WindowDefinition} s2r - The window definition to be added. + */ add_s2r(s2r: WindowDefinition): void; } +/** + * Interface for the Window Definition in the RSP-QL query. + */ export type WindowDefinition = { window_name: string; stream_name: string; width: number; slide: number; }; +/** + * Interface for the R2S operator in the RSP-QL query. + */ type R2S = { operator: "RStream" | "IStream" | "DStream"; name: string; }; +/** + * RSP-QL Parser Class to parse the RSP-QL query and extract the SPARQL query and the window definitions. + */ export declare class RSPQLParser { + /** + * Parse the RSP-QL query to extract the SPARQL query and the window definitions. + * @param {string} query - The RSP-QL query to be parsed. + * @returns {ParsedQuery} - The parsed query object containing the SPARQL query and the window definitions. + */ parse(query: string): ParsedQuery; + /** + * Unwrap the prefixed IRI to the full IRI using the prefix mapper. + * @param {string} prefixedIri - The prefixed IRI to be unwrapped. + * @param {Map} mapper - The prefix mapper to be used for unwrapping. + * @returns {string} - The unwrapped full IRI. + */ unwrap(prefixedIri: string, mapper: Map): string; } export {}; diff --git a/dist/rspql.js b/dist/rspql.js index 371b878..358bb51 100644 --- a/dist/rspql.js +++ b/dist/rspql.js @@ -1,32 +1,58 @@ "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.RSPQLParser = exports.ParsedQuery = void 0; +/** + * Parser for RSP-QL queries to extract the SPARQL query and the window definitions. + */ class ParsedQuery { + /** + * Constructor to initialize the ParsedQuery object with default values. + */ constructor() { this.sparql = "Select * WHERE{?s ?p ?o}"; // @ts-ignore this.r2s = { operator: "RStream", name: "undefined" }; this.s2r = new Array(); } + /** + * Set the SPARQL query for the ParsedQuery object. + * @param {string} sparql - The SPARQL query to be set. + */ set_sparql(sparql) { this.sparql = sparql; } + /** + * Set the R2S operator for the ParsedQuery object. + * @param {R2S} r2s - The R2S operator to be set. + */ set_r2s(r2s) { this.r2s = r2s; } + /** + * Add a S2R window definition to the ParsedQuery object. + * @param {WindowDefinition} s2r - The window definition to be added. + */ add_s2r(s2r) { this.s2r.push(s2r); } } exports.ParsedQuery = ParsedQuery; +/** + * RSP-QL Parser Class to parse the RSP-QL query and extract the SPARQL query and the window definitions. + */ class RSPQLParser { + /** + * Parse the RSP-QL query to extract the SPARQL query and the window definitions. + * @param {string} query - The RSP-QL query to be parsed. + * @returns {ParsedQuery} - The parsed query object containing the SPARQL query and the window definitions. + */ parse(query) { - let parsed = new ParsedQuery(); - let split = query.split(/\r?\n/); - let sparqlLines = new Array(); - let prefixMapper = new Map(); + const parsed = new ParsedQuery(); + const split = query.split(/\r?\n/); + const sparqlLines = new Array(); + const prefixMapper = new Map(); split.forEach((line) => { - let trimmed_line = line.trim(); + const trimmed_line = line.trim(); //R2S if (trimmed_line.startsWith("REGISTER")) { const regexp = /REGISTER +([^ ]+) +<([^>]+)> AS/g; @@ -67,12 +93,18 @@ class RSPQLParser { parsed.sparql = sparqlLines.join("\n"); return parsed; } + /** + * Unwrap the prefixed IRI to the full IRI using the prefix mapper. + * @param {string} prefixedIri - The prefixed IRI to be unwrapped. + * @param {Map} mapper - The prefix mapper to be used for unwrapping. + * @returns {string} - The unwrapped full IRI. + */ unwrap(prefixedIri, mapper) { if (prefixedIri.trim().startsWith("<")) { return prefixedIri.trim().slice(1, -1); } - let split = prefixedIri.trim().split(":"); - let iri = split[0]; + const split = prefixedIri.trim().split(":"); + const iri = split[0]; if (mapper.has(iri)) { return mapper.get(iri) + split[1]; } diff --git a/dist/rspql.test.js b/dist/rspql.test.js index 3e34b26..a4c5a66 100644 --- a/dist/rspql.test.js +++ b/dist/rspql.test.js @@ -10,14 +10,14 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge }; Object.defineProperty(exports, "__esModule", { value: true }); const rspql_1 = require("./rspql"); -let simple_query = `PREFIX : +const simple_query = `PREFIX : REGISTER RStream AS SELECT AVG(?v) as ?avgTemp FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] WHERE{ WINDOW :w1 { ?sensor :value ?v ; :measurement: ?m } }`; -let advanced_query = `PREFIX : +const advanced_query = `PREFIX : REGISTER RStream AS SELECT AVG(?v) as ?avgTemp FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] @@ -29,24 +29,24 @@ let advanced_query = `PREFIX : WINDOW :w2 { ?sensor :value ?v ; :measurement: ?m } }`; test('test_r2s', () => __awaiter(void 0, void 0, void 0, function* () { - let parser = new rspql_1.RSPQLParser(); - let parsed_query = parser.parse(simple_query); - let expected_r2s = { operator: "RStream", name: "output" }; + const parser = new rspql_1.RSPQLParser(); + const parsed_query = parser.parse(simple_query); + const expected_r2s = { operator: "RStream", name: "output" }; expect(parsed_query.r2s).toStrictEqual(expected_r2s); })); test('test_single_window', () => __awaiter(void 0, void 0, void 0, function* () { - let parser = new rspql_1.RSPQLParser(); - let parsed_query = parser.parse(simple_query); - let expected_windows = { window_name: "https://rsp.js/w1", + const parser = new rspql_1.RSPQLParser(); + const parsed_query = parser.parse(simple_query); + const expected_windows = { window_name: "https://rsp.js/w1", stream_name: "https://rsp.js/stream1", width: 10, slide: 2 }; expect(parsed_query.s2r[0]).toStrictEqual(expected_windows); })); test('test_multiple_window', () => __awaiter(void 0, void 0, void 0, function* () { - let parser = new rspql_1.RSPQLParser(); - let parsed_query = parser.parse(advanced_query); - let expected_windows = [{ window_name: "https://rsp.js/w1", + const parser = new rspql_1.RSPQLParser(); + const parsed_query = parser.parse(advanced_query); + const expected_windows = [{ window_name: "https://rsp.js/w1", stream_name: "https://rsp.js/stream1", width: 10, slide: 2 }, @@ -58,9 +58,9 @@ test('test_multiple_window', () => __awaiter(void 0, void 0, void 0, function* ( expect(parsed_query.s2r).toStrictEqual(expected_windows); })); test('test_simple_sparql_extract', () => __awaiter(void 0, void 0, void 0, function* () { - let parser = new rspql_1.RSPQLParser(); - let parsed_query = parser.parse(simple_query); - let expected_sparql = `PREFIX : + const parser = new rspql_1.RSPQLParser(); + const parsed_query = parser.parse(simple_query); + const expected_sparql = `PREFIX : SELECT AVG(?v) as ?avgTemp WHERE{ GRAPH :w1 { ?sensor :value ?v ; :measurement: ?m } @@ -68,9 +68,9 @@ GRAPH :w1 { ?sensor :value ?v ; :measurement: ?m } expect(parsed_query.sparql).toStrictEqual(expected_sparql); })); test('test_sparql_extract_multiple_windows', () => __awaiter(void 0, void 0, void 0, function* () { - let parser = new rspql_1.RSPQLParser(); - let parsed_query = parser.parse(advanced_query); - let expected_sparql = `PREFIX : + const parser = new rspql_1.RSPQLParser(); + const parsed_query = parser.parse(advanced_query); + const expected_sparql = `PREFIX : SELECT AVG(?v) as ?avgTemp WHERE{ diff --git a/src/util/IntervalManager.ts b/dist/util/IntervalManager.js similarity index 72% rename from src/util/IntervalManager.ts rename to dist/util/IntervalManager.js index 32bd1f7..a7ab12f 100644 --- a/src/util/IntervalManager.ts +++ b/dist/util/IntervalManager.js @@ -1,20 +1,17 @@ -import { CSPARQLWindow } from "../operators/s2r"; - +"use strict"; +Object.defineProperty(exports, "__esModule", { value: true }); +exports.IntervalManager = void 0; /** * Class to manage the intervals for the CSPARQL Window. */ -export class IntervalManager { - - public window_instance: CSPARQLWindow; - +class IntervalManager { /** * Constructor for the IntervalManager class. - * @param {CSPARQLWindow} window_instance - The CSPARQL Window instance for which the interval is to be managed. + * @param {CSPARQLWindow} window_instance - The CSPARQL Window instance for which the interval is to be managed. */ - constructor(window_instance: CSPARQLWindow) { + constructor(window_instance) { this.window_instance = window_instance; } - /** * Set the interval for the CSPARQL Window. */ @@ -27,4 +24,5 @@ export class IntervalManager { console.log(`No interval to clear for window ${this.window_instance.name}`); } } -} \ No newline at end of file +} +exports.IntervalManager = IntervalManager; diff --git a/dist/util/Logger.d.ts b/dist/util/Logger.d.ts index 9b1dafd..027267b 100644 --- a/dist/util/Logger.d.ts +++ b/dist/util/Logger.d.ts @@ -14,25 +14,113 @@ export declare enum LogDestination { CONSOLE = 0, FILE = 1 } +/** + * Logger class to log messages based on the log level, loggable classes, and log destination. + */ export declare class Logger { private log_level; private loggable_classes; private log_destination; + /** + * Constructor for the Logger class. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + * @param {any} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. + */ constructor(logLevel: LogLevel, loggableClasses: string[], logDestination: any); + /** + * Set the log level for the logger. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + */ setLogLevel(logLevel: LogLevel): void; + /** + * Set the loggable classes for the logger. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + */ setLoggableClasses(loggableClasses: string[]): void; + /** + * Set the log destination for the logger. + * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. + */ setLogDestination(logDestination: LogDestination): void; + /** + * Log the message based on the log level, loggable classes, and log destination. + * @param {LogLevel} level - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ log(level: LogLevel, message: string, className: string): void; + /** + * Log the message with the TRACE log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ trace(message: string, className: string): void; + /** + * Log the message with the DEBUG log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ debug(message: string, className: string): void; + /** + * Log the message with the INFO log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ info(message: string, className: string): void; + /** + * Log the message with the CONFIG log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ config(message: string, className: string): void; + /** + * Log the message with the WARN log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ warn(message: string, className: string): void; + /** + * Log the message with the ERROR log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ error(message: string, className: string): void; + /** + * Log the message with the FATAL log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ fatal(message: string, className: string): void; + /** + * Log the message with the SEVERE log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ severe(message: string, className: string): void; + /** + * Log the message with the AUDIT log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ audit(message: string, className: string): void; + /** + * Log the message with the STATS log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ stats(message: string, className: string): void; + /** + * Get the logger with the specified log level, loggable classes, and log destination. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. + * @returns {Logger} - The logger with the specified log level, loggable classes, and log destination. + */ static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination): Logger; + /** + * Get the logger with the default log level, loggable classes, and log destination. + * @returns {Logger} - The logger with the default log level, loggable classes, and log destination. + */ static getLoggerWithDefaults(): Logger; } diff --git a/dist/util/Logger.js b/dist/util/Logger.js index 4340674..c1b0f32 100644 --- a/dist/util/Logger.js +++ b/dist/util/Logger.js @@ -25,6 +25,7 @@ var __importStar = (this && this.__importStar) || function (mod) { Object.defineProperty(exports, "__esModule", { value: true }); exports.Logger = exports.LogDestination = exports.LogLevel = void 0; const fs = __importStar(require("fs")); +/* eslint-disable no-unused-vars */ var LogLevel; (function (LogLevel) { LogLevel[LogLevel["TRACE"] = 0] = "TRACE"; @@ -43,29 +44,54 @@ var LogDestination; LogDestination[LogDestination["CONSOLE"] = 0] = "CONSOLE"; LogDestination[LogDestination["FILE"] = 1] = "FILE"; })(LogDestination = exports.LogDestination || (exports.LogDestination = {})); +/* eslint-enable no-unused-vars */ +/** + * Logger class to log messages based on the log level, loggable classes, and log destination. + */ class Logger { + /** + * Constructor for the Logger class. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + * @param {any} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. + */ constructor(logLevel, loggableClasses, logDestination) { this.log_level = logLevel; this.loggable_classes = loggableClasses; this.log_destination = logDestination; console.log(`Logger initialized with log level ${this.log_level}, loggable classes ${this.loggable_classes}, and log destination ${this.log_destination}`); } + /** + * Set the log level for the logger. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + */ setLogLevel(logLevel) { this.log_level = logLevel; } + /** + * Set the loggable classes for the logger. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + */ setLoggableClasses(loggableClasses) { this.loggable_classes = loggableClasses; } + /** + * Set the log destination for the logger. + * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. + */ setLogDestination(logDestination) { this.log_destination = logDestination; } + /** + * Log the message based on the log level, loggable classes, and log destination. + * @param {LogLevel} level - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ log(level, message, className) { - console.log(`Logging level: ${level}`); - console.log(`this.log_level: ${this.log_level}`); if (level >= this.log_level && this.loggable_classes.includes(className)) { const logPrefix = `[${LogLevel[level]}] [${className}]`; const logMessage = `${Date.now()} ${logPrefix} ${message}`; - console.log(`Logging destination: ${this.log_destination}`); switch (this.log_destination) { case 'CONSOLE': console.log(logMessage); @@ -83,39 +109,100 @@ class Logger { } } } + /** + * Log the message with the TRACE log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ trace(message, className) { this.log(LogLevel.TRACE, message, className); } + /** + * Log the message with the DEBUG log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ debug(message, className) { this.log(LogLevel.DEBUG, message, className); } + /** + * Log the message with the INFO log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ info(message, className) { this.log(LogLevel.INFO, message, className); } + /** + * Log the message with the CONFIG log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ config(message, className) { this.log(LogLevel.CONFIG, message, className); } + /** + * Log the message with the WARN log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ warn(message, className) { this.log(LogLevel.WARN, message, className); } + /** + * Log the message with the ERROR log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ error(message, className) { this.log(LogLevel.ERROR, message, className); } + /** + * Log the message with the FATAL log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ fatal(message, className) { this.log(LogLevel.FATAL, message, className); } + /** + * Log the message with the SEVERE log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ severe(message, className) { this.log(LogLevel.SEVERE, message, className); } + /** + * Log the message with the AUDIT log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ audit(message, className) { this.log(LogLevel.AUDIT, message, className); } + /** + * Log the message with the STATS log level. + * @param {string} message - The message to be logged. + * @param {string} className - The class name from which the log message is being logged. + */ stats(message, className) { this.log(LogLevel.STATS, message, className); } + /** + * Get the logger with the specified log level, loggable classes, and log destination. + * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. + * @param {string[]} loggableClasses - The classes which are loggable by the logger. + * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. + * @returns {Logger} - The logger with the specified log level, loggable classes, and log destination. + */ static getLogger(logLevel, loggableClasses, logDestination) { return new Logger(logLevel, loggableClasses, logDestination); } + /** + * Get the logger with the default log level, loggable classes, and log destination. + * @returns {Logger} - The logger with the default log level, loggable classes, and log destination. + */ static getLoggerWithDefaults() { return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); } diff --git a/package-lock.json b/package-lock.json index fd21581..0a59073 100644 --- a/package-lock.json +++ b/package-lock.json @@ -16,6 +16,7 @@ "eslint-plugin-jest": "^28.6.0", "eslint-plugin-jsdoc": "^48.5.0", "n3": "^1.16.3", + "simple-statistics": "^7.8.3", "tslog": "^4.9.3" }, "devDependencies": { @@ -8411,6 +8412,14 @@ "integrity": "sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==", "devOptional": true }, + "node_modules/simple-statistics": { + "version": "7.8.3", + "resolved": "https://registry.npmjs.org/simple-statistics/-/simple-statistics-7.8.3.tgz", + "integrity": "sha512-JFvMY00t6SBGtwMuJ+nqgsx9ylkMiJ5JlK9bkj8AdvniIe5615wWQYkKHXe84XtSuc40G/tlrPu0A5/NlJvv8A==", + "engines": { + "node": "*" + } + }, "node_modules/simple-swizzle": { "version": "0.2.2", "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz", @@ -16308,6 +16317,11 @@ "integrity": "sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==", "devOptional": true }, + "simple-statistics": { + "version": "7.8.3", + "resolved": "https://registry.npmjs.org/simple-statistics/-/simple-statistics-7.8.3.tgz", + "integrity": "sha512-JFvMY00t6SBGtwMuJ+nqgsx9ylkMiJ5JlK9bkj8AdvniIe5615wWQYkKHXe84XtSuc40G/tlrPu0A5/NlJvv8A==" + }, "simple-swizzle": { "version": "0.2.2", "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz", diff --git a/package.json b/package.json index f86a175..f2760b3 100644 --- a/package.json +++ b/package.json @@ -38,6 +38,7 @@ "eslint-plugin-jest": "^28.6.0", "eslint-plugin-jsdoc": "^48.5.0", "n3": "^1.16.3", + "simple-statistics": "^7.8.3", "tslog": "^4.9.3" } } diff --git a/src/config/log_config.json b/src/config/log_config.json index 44f24bf..0145ce2 100644 --- a/src/config/log_config.json +++ b/src/config/log_config.json @@ -3,7 +3,8 @@ "classes_to_log": [ "RDFStream", "RSPEngine", - "CSPARQLWindow" + "CSPARQLWindow", + "R2ROperator" ], "destination": "FILE" } \ No newline at end of file diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index 805c7ec..2615f79 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -1,6 +1,6 @@ import { DataFactory, Quad } from "n3"; const { namedNode, literal, defaultGraph, quad } = DataFactory; -import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer } from './s2r'; +import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer, gammaOperator } from './s2r'; /** * Generate data for the test cases. @@ -50,12 +50,12 @@ describe('CSPARQLWindow', () => { namedNode('http://rsp.js/test_object'), defaultGraph(), ); - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); csparqlWindow.add(quad1, 0); }); test('test_scope', () => { - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); csparqlWindow.scope(4); const num_active_windows = csparqlWindow.active_windows.size; @@ -73,7 +73,7 @@ describe('CSPARQLWindow', () => { }); test('test_evictions', () => { - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); generate_data(10, csparqlWindow); @@ -84,7 +84,7 @@ describe('CSPARQLWindow', () => { test('test_stream_consumer', () => { const recevied_data = new Array(); const received_elementes = new Array; - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); // register window consumer csparqlWindow.subscribe('RStream', function (data: QuadContainer) { console.log('Foo raised, Args:', data); @@ -102,7 +102,7 @@ describe('CSPARQLWindow', () => { test('test_content_get', () => { - const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000, 60000); + const csparqlWindow = new CSPARQLWindow(":window1", 10, 2, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 60000); // generate some data generate_data(10, csparqlWindow); @@ -127,11 +127,10 @@ describe('CSPARQLWindow OOO', () => { const quad2 = quad(DataFactory.blankNode(), DataFactory.namedNode('predicate'), DataFactory.literal('object2')); beforeEach(() => { - window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay, 1000); + window = new CSPARQLWindow('testWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay); }); afterEach(() => { - window.stop(); }); test('should initialize correctly', () => { @@ -218,7 +217,7 @@ describe('CSPARQLWindow OOO', () => { }); test('should trigger on window change', (done) => { - const report_window = new CSPARQLWindow('reportWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay, 1000); + const report_window = new CSPARQLWindow('reportWindow', width, slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, startTime, maxDelay); const callback = jest.fn((data: QuadContainer) => { console.log('Callback called'); expect(data.len()).toBe(1); @@ -249,7 +248,7 @@ describe('CSPARQL Window Watermark Test', () => { beforeEach(() => { quad1 = {} as Quad - csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1000); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); window1 = new WindowInstance(0, 10); window2 = new WindowInstance(5, 15); quadContainer1 = new QuadContainer(new Set([quad1]), 5); @@ -259,7 +258,6 @@ describe('CSPARQL Window Watermark Test', () => { }); afterEach(() => { - csparqlWindow.stop(); csparqlWindow.set_current_watermark(0); }); @@ -295,7 +293,7 @@ describe('CSPARQLWindow emit_on_trigger', () => { beforeEach(() => { quad1 = {} as Quad; - csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1000); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); window1 = new WindowInstance(0, 10); quadContainer1 = new QuadContainer(new Set([quad1]), 5); csparqlWindow.active_windows.set(window1, quadContainer1); @@ -348,7 +346,7 @@ describe('CSPARQLWindow get quads from active windows', () => { beforeEach(() => { quad1 = {} as Quad; - csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5, 1); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); window1 = new WindowInstance(0, 10); quadContainer1 = new QuadContainer(new Set([quad1]), 9); window2 = new WindowInstance(5, 15); @@ -358,10 +356,6 @@ describe('CSPARQLWindow get quads from active windows', () => { csparqlWindow.active_windows.set(window2, quadContainer2); }); - afterEach(() => { - csparqlWindow.stop(); - }); - it('should return the correct content from the active windows', () => { const target_window = new WindowInstance(0, 10); const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); @@ -394,4 +388,15 @@ function hasWindowInstance(set: Set, window: WindowInstance) { } } return false; -} \ No newline at end of file +} + + +describe('Gamma Operator', () => { + it('should return the correct gamma value', () => { + const shape = 4; + const scale = 3; + const gamma = gammaOperator(shape, scale); + console.log(gamma); + + }); +}); \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 2b19123..8a4d3b8 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -1,8 +1,10 @@ import { EventEmitter } from "events"; +import fs from 'fs'; // @ts-ignore import { Quad } from 'n3'; import { Logger, LogLevel, LogDestination } from "../util/Logger"; import * as LOG_CONFIG from "../config/log_config.json"; +const ss = require('simple-statistics'); /* eslint-disable no-unused-vars */ export enum ReportStrategy { @@ -123,14 +125,13 @@ export class CSPARQLWindow { report: ReportStrategy; // The report strategy for the window logger: Logger; // Logger for the CSPARQL Window tick: Tick; // The tick of the window + emitter: EventEmitter; // The event emitter for the window - interval_id: ReturnType; // The interval id for the out-of-order processing of the late elements name: string; // The name of the window private current_watermark: number; // To track the current watermark of the window public late_buffer: Map>; // Buffer for out-of-order late elements public max_delay: number; // The maximum delay allowed for a observation to be considered in the window public pending_triggers: Set; // Tracking windows that have pending triggers - public time_to_trigger_processing_late_elements: number; // The time to trigger the processing of the late elements /** * Constructor for the CSPARQLWindow class. * @param {string} name - The name of the CSPARQL Window. @@ -140,15 +141,13 @@ export class CSPARQLWindow { * @param {Tick} tick - The tick of the window. * @param {number} start_time - The start time of the window. * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. - * @param {number} time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements for out-of-order processing. */ - constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number, time_to_trigger_processing_late_elements: number) { + constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { this.name = name; this.width = width; this.slide = slide; this.report = report; this.tick = tick; - this.time_to_trigger_processing_late_elements = time_to_trigger_processing_late_elements; const log_level: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; this.logger = new Logger(log_level, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); this.time = start_time; @@ -159,7 +158,6 @@ export class CSPARQLWindow { this.max_delay = max_delay; this.pending_triggers = new Set(); this.late_buffer = new Map>(); - this.interval_id = setInterval(() => { this.process_late_elements() }, time_to_trigger_processing_late_elements); } /** * Get the content of the window at the given timestamp if it exists, else return undefined. @@ -191,6 +189,8 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ add(e: Quad, timestamp: number) { + let processing_time = Date.now(); + fs.appendFileSync('time_log.txt', `${processing_time - timestamp}\n`); console.debug(`Adding [" + ${e} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); if (this.if_event_late(timestamp)) { console.log("Event is late at time " + timestamp); @@ -230,7 +230,7 @@ export class CSPARQLWindow { if (!this.late_buffer.has(timestamp)) { this.late_buffer.set(timestamp, new Set()); console.log(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`); - + } this.late_buffer.get(timestamp)?.add(e); this.logger.info(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`, `CSPARQLWindow`); @@ -375,7 +375,7 @@ export class CSPARQLWindow { else { if (content.len() > 0) { this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); - + window.set_triggered(); this.emitter.emit('RStream', content); } @@ -393,14 +393,6 @@ export class CSPARQLWindow { }); } - /** - * Clear the window interval for the out-of-order processing of the late elements. - * @returns {void} - The function does not return anything. - */ - stop() { - clearInterval(this.interval_id); - } - /** * Get the current time of the window. * @returns {number} - The current time of the window. @@ -463,7 +455,8 @@ export class CSPARQLWindow { return; } else { this.logger.info(`Processing late elements for the window with the late_buffer size ${this.late_buffer.size}`, `CSPARQLWindow`) - this.late_buffer.forEach((elements: Set, timestamp: number) => { + const sortedLateBuffer = Array.from(this.late_buffer.entries()).sort(([timestampA], [timestampB]) => timestampA - timestampB); + sortedLateBuffer.forEach(([timestamp, elements]) => { elements.forEach((element: Quad) => { const to_evict = new Set(); this.process_event(element, timestamp); @@ -486,6 +479,10 @@ export class CSPARQLWindow { this.time = t; } + set_max_delay(delay: number) { + this.max_delay = delay; + } + /** * Set the watermark to the given value. * @param {number} t - The watermark to be set. @@ -569,5 +566,8 @@ function computeWindowIfAbsent(map: Map, window: map.set(window, mappingFunction(window)); } } - /* eslint-enable no-unused-vars */ + +export function gammaOperator(shape: number, scale: number): number { + return ss.gamma(shape, scale); +} \ No newline at end of file diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 2ef1d59..75acba7 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -360,7 +360,7 @@ test('test ooo event processing with varying delay settings', async () => { console.log(results); }) -describe.skip('test the rsp engine with out of order processing with various data frequency', () => { +describe('test the rsp engine with out of order processing with various data frequency', () => { const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; const location_two = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-y/"; const location_three = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-z/"; diff --git a/src/rsp.ts b/src/rsp.ts index 7dee3a6..73f9ee5 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -91,7 +91,7 @@ export class RSPEngine { const parser = new RSPQLParser(); const parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { - const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay, this.time_to_trigger_processing_late_elements); + const windowImpl = new CSPARQLWindow(window.window_name, window.width, window.slide, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, this.max_delay); this.windows.push(windowImpl); const stream = new RDFStream(window.stream_name, windowImpl); this.streams.set(window.stream_name, stream); @@ -126,6 +126,7 @@ export class RSPEngine { this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); const bindingsStream = await this.r2r.execute(data); + this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); bindingsStream.on('data', (binding: any) => { const object_with_timestamp: binding_with_timestamp = { bindings: binding, From d0c551689451853907369b1614282a6106fe4580 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 20 Aug 2024 15:07:57 +0200 Subject: [PATCH 25/50] refactor: Add conditional check for content length before triggering window This commit adds a conditional check for the length of the `content` before triggering the window in the `CSPARQLWindow` class. If the `content` has a length greater than 0, the window is triggered and the `RStream` event is emitted. Otherwise, a log message is added to indicate that the window has no data. --- src/operators/s2r.ts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 8a4d3b8..94e27e8 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -125,7 +125,6 @@ export class CSPARQLWindow { report: ReportStrategy; // The report strategy for the window logger: Logger; // Logger for the CSPARQL Window tick: Tick; // The tick of the window - emitter: EventEmitter; // The event emitter for the window name: string; // The name of the window private current_watermark: number; // To track the current watermark of the window @@ -210,6 +209,7 @@ export class CSPARQLWindow { * @returns {boolean} - True if the event is late, else false. */ if_event_late(timestamp: number) { + fs.appendFileSync('time_log_late.txt', `${timestamp - this.time}\n`); return this.time > timestamp; } From 8b0ec87e7de74ac28740411ab92adad06d4f2997 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Mon, 26 Aug 2024 13:41:18 +0200 Subject: [PATCH 26/50] refactor: Remove unused test files and dependencies --- dist/config/log_config.json | 10 - dist/index.d.ts | 4 - dist/index.js | 22 -- dist/operators/r2r.d.ts | 29 -- dist/operators/r2r.js | 78 ----- dist/operators/r2r.test.d.ts | 1 - dist/operators/r2r.test.js | 99 ------- dist/operators/s2r.d.ts | 241 --------------- dist/operators/s2r.js | 550 ----------------------------------- dist/operators/s2r.test.d.ts | 1 - dist/operators/s2r.test.js | 320 -------------------- dist/rsp.d.ts | 75 ----- dist/rsp.js | 186 ------------ dist/rsp.test.d.ts | 1 - dist/rsp.test.js | 379 ------------------------ dist/rspql.d.ts | 62 ---- dist/rspql.js | 116 -------- dist/rspql.test.d.ts | 1 - dist/rspql.test.js | 82 ------ dist/util/IntervalManager.js | 28 -- dist/util/Logger.d.ts | 126 -------- dist/util/Logger.js | 210 ------------- src/operators/s2r.test.ts | 29 +- src/operators/s2r.ts | 122 +++++--- src/rsp.test.ts | 14 +- src/rsp.ts | 8 +- 26 files changed, 89 insertions(+), 2705 deletions(-) delete mode 100644 dist/config/log_config.json delete mode 100644 dist/index.d.ts delete mode 100644 dist/index.js delete mode 100644 dist/operators/r2r.d.ts delete mode 100644 dist/operators/r2r.js delete mode 100644 dist/operators/r2r.test.d.ts delete mode 100644 dist/operators/r2r.test.js delete mode 100644 dist/operators/s2r.d.ts delete mode 100644 dist/operators/s2r.js delete mode 100644 dist/operators/s2r.test.d.ts delete mode 100644 dist/operators/s2r.test.js delete mode 100644 dist/rsp.d.ts delete mode 100644 dist/rsp.js delete mode 100644 dist/rsp.test.d.ts delete mode 100644 dist/rsp.test.js delete mode 100644 dist/rspql.d.ts delete mode 100644 dist/rspql.js delete mode 100644 dist/rspql.test.d.ts delete mode 100644 dist/rspql.test.js delete mode 100644 dist/util/IntervalManager.js delete mode 100644 dist/util/Logger.d.ts delete mode 100644 dist/util/Logger.js diff --git a/dist/config/log_config.json b/dist/config/log_config.json deleted file mode 100644 index dcba16a..0000000 --- a/dist/config/log_config.json +++ /dev/null @@ -1,10 +0,0 @@ -{ - "log_level": "INFO", - "classes_to_log": [ - "RDFStream", - "RSPEngine", - "CSPARQLWindow", - "R2ROperator" - ], - "destination": "FILE" -} diff --git a/dist/index.d.ts b/dist/index.d.ts deleted file mode 100644 index 318b03e..0000000 --- a/dist/index.d.ts +++ /dev/null @@ -1,4 +0,0 @@ -export * from './operators/s2r'; -export * from './operators/r2r'; -export * from './rspql'; -export * from './rsp'; diff --git a/dist/index.js b/dist/index.js deleted file mode 100644 index e50010f..0000000 --- a/dist/index.js +++ /dev/null @@ -1,22 +0,0 @@ -"use strict"; -var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - var desc = Object.getOwnPropertyDescriptor(m, k); - if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { - desc = { enumerable: true, get: function() { return m[k]; } }; - } - Object.defineProperty(o, k2, desc); -}) : (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - o[k2] = m[k]; -})); -var __exportStar = (this && this.__exportStar) || function(m, exports) { - for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p); -}; -Object.defineProperty(exports, "__esModule", { value: true }); -// exporting the operators. -__exportStar(require("./operators/s2r"), exports); -__exportStar(require("./operators/r2r"), exports); -// exporting other files. -__exportStar(require("./rspql"), exports); -__exportStar(require("./rsp"), exports); diff --git a/dist/operators/r2r.d.ts b/dist/operators/r2r.d.ts deleted file mode 100644 index eb1edd1..0000000 --- a/dist/operators/r2r.d.ts +++ /dev/null @@ -1,29 +0,0 @@ -import { QuadContainer } from "./s2r"; -import { Quad } from 'n3'; -/** - * R2R Operator Implementation Class for the RSP Engine. - * It performs operations such as Join, Filter, Aggregation on a stream of data - * to generate a new stream of data. - */ -export declare class R2ROperator { - query: string; - staticData: Set; - /** - * Constructor to initialize the R2R Operator. - * @param {string} query - The query to be executed. - */ - constructor(query: string); - /** - * Add static data to the R2R Operator which will be used in the query execution - * In case there are some quads which are present in each of the relation to be executed, it is better to add them as static data - * and therefore save space and the amount of data to be processed. - * @param {Quad} quad - The quad to be added as static data. - */ - addStaticData(quad: Quad): void; - /** - * Execute the R2R Operator on the given container of quads. - * @param {QuadContainer} container - The container of quads on which the operator is to be executed. The container contains a set of quads. - * @returns {Promise} - The promise of the result of the query execution. - */ - execute(container: QuadContainer): Promise; -} diff --git a/dist/operators/r2r.js b/dist/operators/r2r.js deleted file mode 100644 index f27023f..0000000 --- a/dist/operators/r2r.js +++ /dev/null @@ -1,78 +0,0 @@ -"use strict"; -var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { - function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } - return new (P || (P = Promise))(function (resolve, reject) { - function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } - function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } - function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } - step((generator = generator.apply(thisArg, _arguments || [])).next()); - }); -}; -Object.defineProperty(exports, "__esModule", { value: true }); -exports.R2ROperator = void 0; -const rdf_data_factory_1 = require("rdf-data-factory"); -const N3 = require('n3'); -const DF = new rdf_data_factory_1.DataFactory(); -const QueryEngine = require('@comunica/query-sparql').QueryEngine; -/** - * R2R Operator Implementation Class for the RSP Engine. - * It performs operations such as Join, Filter, Aggregation on a stream of data - * to generate a new stream of data. - */ -class R2ROperator { - /** - * Constructor to initialize the R2R Operator. - * @param {string} query - The query to be executed. - */ - constructor(query) { - this.query = query; - this.staticData = new Set(); - } - /** - * Add static data to the R2R Operator which will be used in the query execution - * In case there are some quads which are present in each of the relation to be executed, it is better to add them as static data - * and therefore save space and the amount of data to be processed. - * @param {Quad} quad - The quad to be added as static data. - */ - addStaticData(quad) { - this.staticData.add(quad); - } - /** - * Execute the R2R Operator on the given container of quads. - * @param {QuadContainer} container - The container of quads on which the operator is to be executed. The container contains a set of quads. - * @returns {Promise} - The promise of the result of the query execution. - */ - execute(container) { - return __awaiter(this, void 0, void 0, function* () { - const store = new N3.Store(); - for (const elem of container.elements) { - store.addQuad(elem); - } - for (const elem of this.staticData) { - store.addQuad(elem); - } - const myEngine = new QueryEngine(); - return yield myEngine.queryBindings(this.query, { - sources: [store], - extensionFunctions: { - 'http://extension.org/functions#sqrt'(args) { - const arg = args[0]; - if (arg.termType === 'Literal') { - return DF.literal(Math.sqrt(Number(arg.value)).toString()); - } - }, - 'http://extension.org/functions#pow'(args) { - const arg1 = args[0]; - if (arg1.termType === 'Literal') { - const arg2 = args[1]; - if (arg2.termType === 'Literal') { - return DF.literal(Math.pow(Number(arg1.value), Number(arg2.value)).toString()); - } - } - } - }, - }); - }); - } -} -exports.R2ROperator = R2ROperator; diff --git a/dist/operators/r2r.test.d.ts b/dist/operators/r2r.test.d.ts deleted file mode 100644 index cb0ff5c..0000000 --- a/dist/operators/r2r.test.d.ts +++ /dev/null @@ -1 +0,0 @@ -export {}; diff --git a/dist/operators/r2r.test.js b/dist/operators/r2r.test.js deleted file mode 100644 index 5e6ca4b..0000000 --- a/dist/operators/r2r.test.js +++ /dev/null @@ -1,99 +0,0 @@ -"use strict"; -var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { - function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } - return new (P || (P = Promise))(function (resolve, reject) { - function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } - function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } - function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } - step((generator = generator.apply(thisArg, _arguments || [])).next()); - }); -}; -Object.defineProperty(exports, "__esModule", { value: true }); -const s2r_1 = require("./s2r"); -const N3 = require('n3'); -const { DataFactory } = N3; -const { namedNode, literal, defaultGraph, quad } = DataFactory; -const r2r_1 = require("./r2r"); -const rspql_1 = require("../rspql"); -test('test_query_engine', () => __awaiter(void 0, void 0, void 0, function* () { - const r2r = new r2r_1.R2ROperator(`SELECT * WHERE { ?s ?p ?o }`); - const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - const quad2 = quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - const quadSet = new Set(); - quadSet.add(quad1); - quadSet.add(quad2); - const container = new s2r_1.QuadContainer(quadSet, 0); - const bindingsStream = yield r2r.execute(container); - const resuults = new Array(); - // @ts-ignore - bindingsStream.on('data', (binding) => { - console.log(binding.toString()); // Quick way to print bindings for testing - resuults.push(binding.toString()); - }); - bindingsStream.on('end', () => { - // The data-listener will not be called anymore once we get here. - expect(resuults.length).toBe(2); - }); -})); -test('test_query_engine_with_extension_functions', () => __awaiter(void 0, void 0, void 0, function* () { - const r2r = new r2r_1.R2ROperator(` - PREFIX extension: - SELECT (extension:sqrt(?o) as ?sqrt) (extension:pow(?o,2) as ?pow) WHERE { ?s ?p ?o }`); - const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), literal('4'), defaultGraph()); - const quad2 = quad(namedNode('https://rsp.js/test_subject_1'), namedNode('http://rsp.js/test_property'), literal('9'), defaultGraph()); - const quadSet = new Set(); - quadSet.add(quad1); - quadSet.add(quad2); - const container = new s2r_1.QuadContainer(quadSet, 0); - const bindingsStream = yield r2r.execute(container); - const results = new Array(); - // @ts-ignore - bindingsStream.on('data', (binding) => { - console.log(binding); - results.push(binding); - }); - bindingsStream.on('end', () => { - // The data-listener will not be called anymore once we get here. - expect(results.length).toBe(2); - }); -})); -test.skip('test_with_huge_quad_data', () => __awaiter(void 0, void 0, void 0, function* () { - const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; - const location_two = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; - const location_three = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; - let rspql_query = ` - PREFIX : - PREFIX saref: - PREFIX dahccsensors: - PREFIX func: - REGISTER RStream AS - SELECT (func:sqrt(?o * ?o + ?o2 * ?o2 + ?o3 * ?o3) AS ?activityIndex) - FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 6000 STEP 2000] - FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 6000 STEP 2000] - FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 6000 STEP 2000] - - WHERE { - WINDOW :w1 { - ?s1 saref:hasValue ?o . - ?s1 saref:relatesToProperty dahccsensors:wearable.acceleration.x . - } - }`; - let rspql_parser = new rspql_1.RSPQLParser(); - let parsed_query = rspql_parser.parse(rspql_query); - let r2r = new r2r_1.R2ROperator(parsed_query.sparql); - let quad_set = new Set(); - let number_of_quads = 3000; - for (let i = 0; i < number_of_quads; i++) { - for (let j = 0; j < 3; j++) { - const stream_element = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('https://saref.etsi.org/core/hasValue'), literal(`${Math.random() * 10}`, namedNode('http://www.w3.org/2001/XMLSchema#integer')), namedNode(`https://rsp.js/w${j}`)); - const stream_element2 = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('https://saref.etsi.org/core/relatesToProperty'), namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), namedNode(`https://rsp.js/w${j}`)); - quad_set.add(stream_element); - quad_set.add(stream_element2); - } - } - let quad_container = new s2r_1.QuadContainer(quad_set, 0); - let bindings_stream = yield r2r.execute(quad_container); - bindings_stream.on('data', (binding) => { - console.log(`Binding: ${binding.toString()}`); - }); -})); diff --git a/dist/operators/s2r.d.ts b/dist/operators/s2r.d.ts deleted file mode 100644 index 41a5bcd..0000000 --- a/dist/operators/s2r.d.ts +++ /dev/null @@ -1,241 +0,0 @@ -/// -import { EventEmitter } from "events"; -import { Quad } from 'n3'; -import { Logger } from "../util/Logger"; -export declare enum ReportStrategy { - NonEmptyContent = 0, - OnContentChange = 1, - OnWindowClose = 2, - Periodic = 3 -} -export declare enum Tick { - TimeDriven = 0, - TupleDriven = 1, - BatchDriven = 2 -} -/** - * WindowInstance class to represent the window instance of the CSPARQL Window. - */ -export declare class WindowInstance { - open: number; - close: number; - has_triggered: boolean; - /** - * Constructor for the WindowInstance class. - * @param {number} open - The open time of the window instance of the form {open, close, has_triggered}. - * @param {number} close - The close time of the window instance of the form {open, close, has_triggered}. - */ - constructor(open: number, close: number); - /** - * Get the definition of the window instance. - * @returns {string} - The definition of the window instance in the form [open, close) Triggered: has_triggered. - */ - getDefinition(): string; - /** - * Get the code of the window instance. - * @returns {number} - The code of the window instance. - */ - hasCode(): number; - /** - * Check if the window instance is the same as the other window instance. - * @param {WindowInstance} other_window - The other window instance to be compared. - * @returns {boolean} - True if the window instances are the same, else false. - */ - is_same(other_window: WindowInstance): boolean; - set_triggered(): void; -} -/** - * QuadContainer class to represent the container for the quads in the CSPARQL Window. - */ -export declare class QuadContainer { - elements: Set; - last_time_stamp_changed: number; - /** - * Constructor for the QuadContainer class. - * @param {Set} elements - The set of quads in the container. - * @param {number} ts - The timestamp of the last change in the container. - */ - constructor(elements: Set, ts: number); - /** - * Get the length of the container of the quads. - * @returns {number} - The length of the container. - */ - len(): number; - /** - * Add the quad to the container of the quads. - * @param {Quad} quad - The quad to be added to the container. - * @param {number} ts - The timestamp of the quad. - * @returns {void} - The function returns nothing. - */ - add(quad: Quad, ts: number): void; - /** - * Get the last time the container was changed. - * @returns {number} - The last time the container was changed. - */ - last_time_changed(): number; -} -/** - * CSPARQL Window class that implements the windowing mechanism for the RSP Engine. - * The class is responsible for managing the windows, processing the events, and emitting the triggers based on the report strategy. - * The class also handles the out-of-order processing of the events based on the maximum delay allowed for the events and the watermark. - */ -export declare class CSPARQLWindow { - width: number; - slide: number; - time: number; - t0: number; - active_windows: Map; - report: ReportStrategy; - logger: Logger; - tick: Tick; - emitter: EventEmitter; - name: string; - private current_watermark; - late_buffer: Map>; - max_delay: number; - pending_triggers: Set; - /** - * Constructor for the CSPARQLWindow class. - * @param {string} name - The name of the CSPARQL Window. - * @param {number} width - The width of the window. - * @param {number} slide - The slide of the window. - * @param {ReportStrategy} report - The report strategy for the window. - * @param {Tick} tick - The tick of the window. - * @param {number} start_time - The start time of the window. - * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. - */ - constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number); - /** - * Get the content of the window at the given timestamp if it exists, else return undefined. - * @param {number} timestamp - The timestamp for which the content of the window is to be retrieved. - * @returns {QuadContainer | undefined} - The content of the window if it exists, else undefined. - */ - getContent(timestamp: number): QuadContainer | undefined; - /** - * Add the event to the window at the given timestamp and checks if the event is late or not. - * @param {Quad} e - The event to be added to the window. - * @param {number} timestamp - The timestamp of the event. - * @returns {void} - The function does not return anything. - */ - add(e: Quad, timestamp: number): void; - /** - * Check if the event is late or not based on the timestamp of the event and comparing it to the current time of the window. - * @param {number} timestamp - The timestamp of the event. - * @returns {boolean} - True if the event is late, else false. - */ - if_event_late(timestamp: number): boolean; - /** - * Buffer the late event for out-of-order processing based on the maximum delay allowed for the events. - * @param {Quad} e - The event to be buffered. - * @param {number} timestamp - The timestamp of the event. - * @returns {void} - The function does not return anything. - */ - buffer_late_event(e: Quad, timestamp: number): void; - /** - * Evict the windows that are out of the watermark. - * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. - * @returns {void} - The function does not return anything. - */ - evict_windows(toEvict: Set): void; - /** - * Add the window instance to the pending triggers to be emitted. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - add_window_instance_to_pending_triggers(t_e: number): void; - /** - * Process the event and update the watermark . - * @param {Quad} e - The event to be processed of the form {subject, predicate, object, graph}. - * @param {number} t_e - The timestamp of the event. - * @returns {Set} - The set of windows to be evicted from the window to be processed by the R2R Operator. - */ - process_event(e: Quad, t_e: number): Set; - /** - * Get the window instance for the given timestamp. - * @param {number} t_e - The timestamp for which the window instance is to be retrieved. - * @returns {WindowInstance} - The window instance for the given timestamp. - */ - get_window_instance(t_e: number): WindowInstance; - /** - * Updating the watermark. - * @param {number} new_time - The new watermark to be set. - * @returns {void} - The function does not return anything. - */ - update_watermark(new_time: number): void; - /** - * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. - */ - evict_and_trigger_on_watermark(): void; - /** - * Emit the triggers for the windows that are within the watermark. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - emit_on_trigger(t_e: number): void; - /** - * Get the current time of the window. - * @returns {number} - The current time of the window. - */ - get_current_watermark(): number; - /** - * Compute the report based on the window instance and the content of the window. - * @param {WindowInstance} w - The window instance for which the report is to be computed. - * @param {QuadContainer} content - The content of the window (which is a QuadContainer). - * @param {number} timestamp - The timestamp of the event to be processed. - * @returns {boolean} - True if the report is to be computed, else false. - */ - compute_report(w: WindowInstance, content: QuadContainer, timestamp: number): boolean; - /** - * Scope the window based on the given timestamp. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - scope(t_e: number): void; - /** - * Subscribe to the window based on the output stream and the callback function. - * @param {'RStream' | 'IStream' | 'DStream'} output - The output stream to which the window is to be subscribed. The output stream can be one of {'RStream', 'IStream', 'DStream'}. - * @param {(QuadContainer) => void} call_back - The callback function to be called when the window emits the triggers. - * @returns {void} - The function does not return anything. - */ - subscribe(output: 'RStream' | 'IStream' | 'DStream', call_back: (data: QuadContainer) => void): void; - /** - * Process the late elements that are out of order. - * The function is currently called periodically based on the slide of the window. - * @returns {void} - The function does not return anything. - */ - process_late_elements(): void; - /** - * Set the current time to the given value. - * @param {number} t - The time to be set. - * @returns {void} - The function does not return anything. - */ - set_current_time(t: number): void; - set_max_delay(delay: number): void; - /** - * Set the watermark to the given value. - * @param {number} t - The watermark to be set. - * @returns {void} - The function does not return anything. - */ - set_current_watermark(t: number): void; - /** - * Get the quads from the active windows based on the given window instance. The function is used to get the content of the window based on the window instance. - * @param {Map} map - The map of the active windows. - * @param {WindowInstance} target - The window instance for which the content is to be retrieved. - * @returns {QuadContainer | undefined} - The content of the window instance if it exists, else undefined. - */ - get_quads_from_active_windows(map: Map, target: WindowInstance): QuadContainer | undefined; - /** - * Check if the window instance is present in the set of window instances. - * @param {Set} set - The set of window instances. - * @param {WindowInstance} window - The window instance to be checked. - * @returns {boolean} - True if the window instance is present in the set, else false. - */ - hasWindowInstance(set: Set, window: WindowInstance): boolean; - /** - * Get a string representation of the CSPARQLWindow definition. - * The function is used to get the definition of the CSPARQLWindow in a string format. - * @returns {string} - The string representation of the CSPARQLWindow definition. - */ - getCSPARQLWindowDefinition(): string; -} -export declare function gammaOperator(shape: number, scale: number): number; diff --git a/dist/operators/s2r.js b/dist/operators/s2r.js deleted file mode 100644 index 0248172..0000000 --- a/dist/operators/s2r.js +++ /dev/null @@ -1,550 +0,0 @@ -"use strict"; -var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - var desc = Object.getOwnPropertyDescriptor(m, k); - if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { - desc = { enumerable: true, get: function() { return m[k]; } }; - } - Object.defineProperty(o, k2, desc); -}) : (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - o[k2] = m[k]; -})); -var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { - Object.defineProperty(o, "default", { enumerable: true, value: v }); -}) : function(o, v) { - o["default"] = v; -}); -var __importStar = (this && this.__importStar) || function (mod) { - if (mod && mod.__esModule) return mod; - var result = {}; - if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); - __setModuleDefault(result, mod); - return result; -}; -var __importDefault = (this && this.__importDefault) || function (mod) { - return (mod && mod.__esModule) ? mod : { "default": mod }; -}; -Object.defineProperty(exports, "__esModule", { value: true }); -exports.gammaOperator = exports.CSPARQLWindow = exports.QuadContainer = exports.WindowInstance = exports.Tick = exports.ReportStrategy = void 0; -const events_1 = require("events"); -const fs_1 = __importDefault(require("fs")); -const Logger_1 = require("../util/Logger"); -const LOG_CONFIG = __importStar(require("../config/log_config.json")); -const ss = require('simple-statistics'); -/* eslint-disable no-unused-vars */ -var ReportStrategy; -(function (ReportStrategy) { - ReportStrategy[ReportStrategy["NonEmptyContent"] = 0] = "NonEmptyContent"; - ReportStrategy[ReportStrategy["OnContentChange"] = 1] = "OnContentChange"; - ReportStrategy[ReportStrategy["OnWindowClose"] = 2] = "OnWindowClose"; - ReportStrategy[ReportStrategy["Periodic"] = 3] = "Periodic"; -})(ReportStrategy = exports.ReportStrategy || (exports.ReportStrategy = {})); -var Tick; -(function (Tick) { - Tick[Tick["TimeDriven"] = 0] = "TimeDriven"; - Tick[Tick["TupleDriven"] = 1] = "TupleDriven"; - Tick[Tick["BatchDriven"] = 2] = "BatchDriven"; -})(Tick = exports.Tick || (exports.Tick = {})); -/* eslint-enable no-unused-vars */ -/** - * WindowInstance class to represent the window instance of the CSPARQL Window. - */ -class WindowInstance { - /** - * Constructor for the WindowInstance class. - * @param {number} open - The open time of the window instance of the form {open, close, has_triggered}. - * @param {number} close - The close time of the window instance of the form {open, close, has_triggered}. - */ - constructor(open, close) { - this.open = open; - this.close = close; - this.has_triggered = false; - } - /** - * Get the definition of the window instance. - * @returns {string} - The definition of the window instance in the form [open, close) Triggered: has_triggered. - */ - getDefinition() { - return "[" + this.open + "," + this.close + ")" + " Triggered: " + this.has_triggered; - } - /** - * Get the code of the window instance. - * @returns {number} - The code of the window instance. - */ - hasCode() { - return 0; - } - /** - * Check if the window instance is the same as the other window instance. - * @param {WindowInstance} other_window - The other window instance to be compared. - * @returns {boolean} - True if the window instances are the same, else false. - */ - is_same(other_window) { - return this.open == other_window.open && this.close == other_window.close; - } - set_triggered() { - this.has_triggered = true; - } -} -exports.WindowInstance = WindowInstance; -/** - * QuadContainer class to represent the container for the quads in the CSPARQL Window. - */ -class QuadContainer { - /** - * Constructor for the QuadContainer class. - * @param {Set} elements - The set of quads in the container. - * @param {number} ts - The timestamp of the last change in the container. - */ - constructor(elements, ts) { - this.elements = elements; - this.last_time_stamp_changed = ts; - } - /** - * Get the length of the container of the quads. - * @returns {number} - The length of the container. - */ - len() { - return this.elements.size; - } - /** - * Add the quad to the container of the quads. - * @param {Quad} quad - The quad to be added to the container. - * @param {number} ts - The timestamp of the quad. - * @returns {void} - The function returns nothing. - */ - add(quad, ts) { - this.elements.add(quad); - this.last_time_stamp_changed = ts; - } - /** - * Get the last time the container was changed. - * @returns {number} - The last time the container was changed. - */ - last_time_changed() { - return this.last_time_stamp_changed; - } -} -exports.QuadContainer = QuadContainer; -/** - * CSPARQL Window class that implements the windowing mechanism for the RSP Engine. - * The class is responsible for managing the windows, processing the events, and emitting the triggers based on the report strategy. - * The class also handles the out-of-order processing of the events based on the maximum delay allowed for the events and the watermark. - */ -class CSPARQLWindow { - /** - * Constructor for the CSPARQLWindow class. - * @param {string} name - The name of the CSPARQL Window. - * @param {number} width - The width of the window. - * @param {number} slide - The slide of the window. - * @param {ReportStrategy} report - The report strategy for the window. - * @param {Tick} tick - The tick of the window. - * @param {number} start_time - The start time of the window. - * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. - */ - constructor(name, width, slide, report, tick, start_time, max_delay) { - this.name = name; - this.width = width; - this.slide = slide; - this.report = report; - this.tick = tick; - const log_level = Logger_1.LogLevel[LOG_CONFIG.log_level]; - this.logger = new Logger_1.Logger(log_level, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination); - this.time = start_time; - this.current_watermark = start_time; - this.t0 = start_time; - this.active_windows = new Map(); - this.emitter = new events_1.EventEmitter(); - this.max_delay = max_delay; - this.pending_triggers = new Set(); - this.late_buffer = new Map(); - } - /** - * Get the content of the window at the given timestamp if it exists, else return undefined. - * @param {number} timestamp - The timestamp for which the content of the window is to be retrieved. - * @returns {QuadContainer | undefined} - The content of the window if it exists, else undefined. - */ - getContent(timestamp) { - let max_window = null; - let max_time = Number.MAX_SAFE_INTEGER; - this.active_windows.forEach((value, window) => { - if (window.open <= timestamp && timestamp <= window.close) { - if (window.close < max_time) { - max_time = window.close; - max_window = window; - } - } - }); - if (max_window) { - return this.active_windows.get(max_window); - } - else { - return undefined; - } - } - /** - * Add the event to the window at the given timestamp and checks if the event is late or not. - * @param {Quad} e - The event to be added to the window. - * @param {number} timestamp - The timestamp of the event. - * @returns {void} - The function does not return anything. - */ - add(e, timestamp) { - let processing_time = Date.now(); - fs_1.default.appendFileSync('time_log.txt', `${processing_time - timestamp}\n`); - console.debug(`Adding [" + ${e} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); - if (this.if_event_late(timestamp)) { - console.log("Event is late at time " + timestamp); - this.buffer_late_event(e, this.time); - return; - } - const to_evict = this.process_event(e, timestamp); - if (timestamp > this.time) { - this.time = timestamp; - } - this.evict_windows(to_evict); - } - /** - * Check if the event is late or not based on the timestamp of the event and comparing it to the current time of the window. - * @param {number} timestamp - The timestamp of the event. - * @returns {boolean} - True if the event is late, else false. - */ - if_event_late(timestamp) { - return this.time > timestamp; - } - /** - * Buffer the late event for out-of-order processing based on the maximum delay allowed for the events. - * @param {Quad} e - The event to be buffered. - * @param {number} timestamp - The timestamp of the event. - * @returns {void} - The function does not return anything. - */ - buffer_late_event(e, timestamp) { - var _a; - if (this.time - timestamp > this.max_delay) { - this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is out of the allowed delay [" + ${this.max_delay} + "]`, `CSPARQLWindow`); - console.error("Late element [" + e + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); - } - else { - this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is being buffered for out of order processing`, `CSPARQLWindow`); - console.warn("Late element [" + e + "] with timestamp [" + timestamp + "] is being buffered for out of order processing"); - if (!this.late_buffer.has(timestamp)) { - this.late_buffer.set(timestamp, new Set()); - console.log(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`); - } - (_a = this.late_buffer.get(timestamp)) === null || _a === void 0 ? void 0 : _a.add(e); - this.logger.info(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`, `CSPARQLWindow`); - } - } - /** - * Evict the windows that are out of the watermark. - * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. - * @returns {void} - The function does not return anything. - */ - evict_windows(toEvict) { - for (const w of toEvict) { - console.debug("Evicting [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } - } - /** - * Add the window instance to the pending triggers to be emitted. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - add_window_instance_to_pending_triggers(t_e) { - this.logger.info(`Pending Triggers are : ${JSON.stringify(this.pending_triggers)}`, `CSPARQLWindow`); - console.log(`Size of the pending triggers before adding the window instance: ${this.pending_triggers.size}`); - const window_instance = this.get_window_instance(t_e); - if (this.hasWindowInstance(this.pending_triggers, window_instance)) { - return; - } - else { - this.pending_triggers.add(window_instance); - } - } - /** - * Process the event and update the watermark . - * @param {Quad} e - The event to be processed of the form {subject, predicate, object, graph}. - * @param {number} t_e - The timestamp of the event. - * @returns {Set} - The set of windows to be evicted from the window to be processed by the R2R Operator. - */ - process_event(e, t_e) { - const toEvict = new Set(); - this.scope(t_e); - for (const w of this.active_windows.keys()) { - if (w.open <= t_e && t_e < w.close) { - const temp_window = this.active_windows.get(w); - if (temp_window) { - temp_window.add(e, t_e); - } - } - else if (t_e >= w.close) { - toEvict.add(w); - } - } - this.update_watermark(t_e); - this.add_window_instance_to_pending_triggers(t_e); - return toEvict; - } - /** - * Get the window instance for the given timestamp. - * @param {number} t_e - The timestamp for which the window instance is to be retrieved. - * @returns {WindowInstance} - The window instance for the given timestamp. - */ - get_window_instance(t_e) { - const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; - const o_i = c_sup - this.width; - return new WindowInstance(o_i, o_i + this.width); - } - /** - * Updating the watermark. - * @param {number} new_time - The new watermark to be set. - * @returns {void} - The function does not return anything. - */ - update_watermark(new_time) { - if (new_time > this.current_watermark) { - this.current_watermark = new_time; - this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); - this.evict_and_trigger_on_watermark(); - } - else { - console.error("Watermark is not increasing"); - } - } - /** - * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. - */ - evict_and_trigger_on_watermark() { - // Evict windows that are out of the watermark and should be evicted. - const to_evict = new Set(); - // Checking all of the currently active windows. - this.active_windows.forEach((value, window) => { - // If the window is out of the watermark, add it to the eviction list, i.e if it is less than or - // equal to the current watermark minus the maximum delay. - if (window.close <= this.current_watermark - this.max_delay) { - // Add the window to the eviction list. - to_evict.add(window); - } - }); - this.logger.info(`Current watermark: ${this.current_watermark} to emit triggers for the window`, `CSPARQLWindow`); - // Emit triggers for the windows that are within the watermark, if any. - this.emit_on_trigger(this.current_watermark); - // Evict the windows that are out of the watermark. - for (const window of to_evict) { - this.active_windows.delete(window); - console.debug(`Watermark evicting window ${window.getDefinition()}`); - } - } - /** - * Emit the triggers for the windows that are within the watermark. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - emit_on_trigger(t_e) { - this.pending_triggers.forEach((window) => { - this.logger.info(`Emitting triggers for the window ${window.getDefinition()}`, `CSPARQLWindow`); - const content = this.get_quads_from_active_windows(this.active_windows, window); - if (content && content.len() > 0) { - let should_emit = false; - if (this.report == ReportStrategy.OnWindowClose) { - if (window.close <= t_e) { - should_emit = true; - } - } - else if (this.report == ReportStrategy.OnContentChange) { - should_emit = true; - } - else { - should_emit = false; - } - if (should_emit) { - // this.time = t_e; - if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { - if (window.has_triggered) { - this.logger.info(`Window ${window.getDefinition()} is already triggered so not triggering it again.`, `CSPARQLWindow`); - } - else { - if (content.len() > 0) { - this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); - window.set_triggered(); - this.emitter.emit('RStream', content); - } - else { - this.logger.info(`Window ${window.getDefinition()} has no data.`, `CSPARQLWindow`); - } - } - } - this.pending_triggers.delete(window); - } - else { - console.error("Window [" + window.open + "," + window.close + ") should not trigger"); - } - } - }); - } - /** - * Get the current time of the window. - * @returns {number} - The current time of the window. - */ - get_current_watermark() { - return this.current_watermark; - } - /** - * Compute the report based on the window instance and the content of the window. - * @param {WindowInstance} w - The window instance for which the report is to be computed. - * @param {QuadContainer} content - The content of the window (which is a QuadContainer). - * @param {number} timestamp - The timestamp of the event to be processed. - * @returns {boolean} - True if the report is to be computed, else false. - */ - compute_report(w, content, timestamp) { - if (this.report == ReportStrategy.OnWindowClose) { - return w.close < timestamp; - } - else if (this.report == ReportStrategy.OnContentChange) { - return true; - } - return false; - } - /** - * Scope the window based on the given timestamp. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - scope(t_e) { - const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; - let o_i = c_sup - this.width; - while (o_i <= t_e) { - computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); - o_i += this.slide; - } - } - /* eslint-disable no-unused-vars */ - /** - * Subscribe to the window based on the output stream and the callback function. - * @param {'RStream' | 'IStream' | 'DStream'} output - The output stream to which the window is to be subscribed. The output stream can be one of {'RStream', 'IStream', 'DStream'}. - * @param {(QuadContainer) => void} call_back - The callback function to be called when the window emits the triggers. - * @returns {void} - The function does not return anything. - */ - subscribe(output, call_back) { - this.emitter.on(output, call_back); - } - /* eslint-enable no-unused-vars */ - /** - * Process the late elements that are out of order. - * The function is currently called periodically based on the slide of the window. - * @returns {void} - The function does not return anything. - */ - process_late_elements() { - if (this.late_buffer.size == 0) { - return; - } - else { - this.logger.info(`Processing late elements for the window with the late_buffer size ${this.late_buffer.size}`, `CSPARQLWindow`); - const sortedLateBuffer = Array.from(this.late_buffer.entries()).sort(([timestampA], [timestampB]) => timestampA - timestampB); - sortedLateBuffer.forEach(([timestamp, elements]) => { - elements.forEach((element) => { - const to_evict = new Set(); - this.process_event(element, timestamp); - for (const w of to_evict) { - console.debug("Evicting Late [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } - }); - }); - this.late_buffer.clear(); - } - } - /** - * Set the current time to the given value. - * @param {number} t - The time to be set. - * @returns {void} - The function does not return anything. - */ - set_current_time(t) { - this.time = t; - } - set_max_delay(delay) { - this.max_delay = delay; - } - /** - * Set the watermark to the given value. - * @param {number} t - The watermark to be set. - * @returns {void} - The function does not return anything. - */ - set_current_watermark(t) { - this.current_watermark = t; - } - /** - * Get the quads from the active windows based on the given window instance. The function is used to get the content of the window based on the window instance. - * @param {Map} map - The map of the active windows. - * @param {WindowInstance} target - The window instance for which the content is to be retrieved. - * @returns {QuadContainer | undefined} - The content of the window instance if it exists, else undefined. - */ - get_quads_from_active_windows(map, target) { - for (const [key, value] of map.entries()) { - if (key.open === target.open && key.close === target.close && key.has_triggered === target.has_triggered) { - return value; - } - } - return undefined; - } - /** - * Check if the window instance is present in the set of window instances. - * @param {Set} set - The set of window instances. - * @param {WindowInstance} window - The window instance to be checked. - * @returns {boolean} - True if the window instance is present in the set, else false. - */ - hasWindowInstance(set, window) { - for (const elem of set) { - if (elem.open === window.open && elem.close === window.close) { - return true; - } - } - return false; - } - /** - * Get a string representation of the CSPARQLWindow definition. - * The function is used to get the definition of the CSPARQLWindow in a string format. - * @returns {string} - The string representation of the CSPARQLWindow definition. - */ - getCSPARQLWindowDefinition() { - const windowDefinitions = []; - for (const [window] of this.active_windows.entries()) { - windowDefinitions.push(window.getDefinition()); - } - return `CSPARQLWindow { - name: ${this.name}, - width: ${this.width}, - slide: ${this.slide}, - current_time: ${this.time}, - current_watermark: ${this.current_watermark}, - report_strategy: ${ReportStrategy[this.report]}, - tick: ${Tick[this.tick]}, - active_windows: [${windowDefinitions.join(", ")}] - }`; - } -} -exports.CSPARQLWindow = CSPARQLWindow; -/* eslint-disable no-unused-vars */ -/** - * Compute the window if absent based on the given window instance and the mapping function. - * @param {Map} map - The map of the active windows. - * @param {WindowInstance} window - The window instance of the form {open, close, has_triggered}. - * @param {mappingFunction} mappingFunction - The mapping function to be applied to the window instance. - */ -function computeWindowIfAbsent(map, window, mappingFunction) { - let found = false; - for (const w of map.keys()) { - if (w.is_same(window)) { - found = true; - break; - } - } - if (!found) { - map.set(window, mappingFunction(window)); - } -} -/* eslint-enable no-unused-vars */ -function gammaOperator(shape, scale) { - return ss.gamma(shape, scale); -} -exports.gammaOperator = gammaOperator; diff --git a/dist/operators/s2r.test.d.ts b/dist/operators/s2r.test.d.ts deleted file mode 100644 index cb0ff5c..0000000 --- a/dist/operators/s2r.test.d.ts +++ /dev/null @@ -1 +0,0 @@ -export {}; diff --git a/dist/operators/s2r.test.js b/dist/operators/s2r.test.js deleted file mode 100644 index 511cf62..0000000 --- a/dist/operators/s2r.test.js +++ /dev/null @@ -1,320 +0,0 @@ -"use strict"; -Object.defineProperty(exports, "__esModule", { value: true }); -const n3_1 = require("n3"); -const { namedNode, literal, defaultGraph, quad } = n3_1.DataFactory; -const s2r_1 = require("./s2r"); -/** - * Generate data for the test cases. - * @param {number} num_events - The number of events to generate. - * @param {CSPARQLWindow} csparqlWindow - The CSPARQL Window to which the data is to be added. - * @returns {void} - Returns nothing. - */ -function generate_data(num_events, csparqlWindow) { - for (let i = 0; i < num_events; i++) { - const stream_element = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - csparqlWindow.add(stream_element, i); - } -} -describe('CSPARQLWindow', () => { - test('create_graph_container', () => { - const quad1 = quad(namedNode('https://ruben.verborgh.org/profile/#me'), namedNode('http://xmlns.com/foaf/0.1/givenName'), literal('Ruben', 'en'), defaultGraph()); - const quad2 = quad(namedNode('https://ruben.verborgh.org/profile/#me'), namedNode('http://xmlns.com/foaf/0.1/lastName'), literal('Verborgh', 'en'), defaultGraph()); - const content = new Set; - content.add(quad1); - content.add(quad2); - const container = new s2r_1.QuadContainer(content, 0); - expect(container.len()).toBe(2); - expect(container.last_time_changed()).toBe(0); - }); - test('add_to_window', () => { - const quad1 = quad(namedNode('https://rsp.js/test_subject_0'), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - csparqlWindow.add(quad1, 0); - }); - test('test_scope', () => { - const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - csparqlWindow.scope(4); - const num_active_windows = csparqlWindow.active_windows.size; - /** - * Open windows: - * [-6, 4) - * [-4, 6) - * [-2, 8) - * [0, 10) - * [2, 12) - * [4, 14). - */ - expect(num_active_windows).toBe(6); - }); - test('test_evictions', () => { - const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - generate_data(10, csparqlWindow); - expect(csparqlWindow.active_windows.size).toBe(5); - }); - test('test_stream_consumer', () => { - const recevied_data = new Array(); - const received_elementes = new Array; - const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - // register window consumer - csparqlWindow.subscribe('RStream', function (data) { - console.log('Foo raised, Args:', data); - console.log('dat size', data.elements.size); - recevied_data.push(data); - data.elements.forEach(item => received_elementes.push(item)); - }); - // generate some data - generate_data(10, csparqlWindow); - expect(recevied_data.length).toBe(4); - expect(received_elementes.length).toBe(2 + 4 + 6 + 8); - }); - test('test_content_get', () => { - const csparqlWindow = new s2r_1.CSPARQLWindow(":window1", 10, 2, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 60000); - // generate some data - generate_data(10, csparqlWindow); - const content = csparqlWindow.getContent(10); - expect(content).toBeDefined(); - if (content) { - expect(content.elements.size).toBe(10); - } - const undefinedContent = csparqlWindow.getContent(20); - expect(undefinedContent).toBeUndefined(); - }); -}); -describe('CSPARQLWindow OOO', () => { - let window; - const width = 10; - const slide = 5; - const startTime = 0; - const maxDelay = 2; - const quad1 = quad(n3_1.DataFactory.blankNode(), n3_1.DataFactory.namedNode('predicate'), n3_1.DataFactory.literal('object1')); - const quad2 = quad(n3_1.DataFactory.blankNode(), n3_1.DataFactory.namedNode('predicate'), n3_1.DataFactory.literal('object2')); - beforeEach(() => { - window = new s2r_1.CSPARQLWindow('testWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, startTime, maxDelay); - }); - afterEach(() => { - }); - test('should initialize correctly', () => { - expect(window.name).toBe('testWindow'); - expect(window.width).toBe(width); - expect(window.slide).toBe(slide); - expect(window.time).toBe(startTime); - expect(window.max_delay).toBe(maxDelay); - }); - test('should add element to the active window', () => { - window.add(quad1, 1); - const quadContainer = window.getContent(1); - expect(quadContainer === null || quadContainer === void 0 ? void 0 : quadContainer.len()).toBe(1); - }); - test('check if event is late', () => { - window.add(quad1, 1); - window.set_current_time(8); - expect(window.if_event_late(2)).toBe(true); - }); - test('should add element to the late buffer', () => { - window.add(quad1, 5); - window.set_current_time(8); - // Add late element - window.buffer_late_event(quad2, 3); - // rejects if it is outside the allowed max_delay window - expect(window.late_buffer.size).toBe(0); - // Adds another late element - window.buffer_late_event(quad2, 7); - // accepts as it is inside the allowed max_delay window - expect(window.late_buffer.size).toBe(1); - }); - test('should buffer late elements', () => { - var _a; - window.add(quad1, 1); - window.add(quad2, 0); - expect(window.late_buffer.size).toBe(1); - expect((_a = window.late_buffer.get(0)) === null || _a === void 0 ? void 0 : _a.has(quad2)).toBe(true); - }); - test('should evict windows based on watermark', () => { - window.add(quad1, 1); - window.set_current_time(12); - window.add(quad2, 12); - const activeWindows = Array.from(window.active_windows.keys()); - expect(activeWindows.length).toBe(2); - window.update_watermark(22); - expect(window.active_windows.size).toBe(0); - }); - test('should update the watermark', () => { - expect(window.get_current_watermark()).toBe(0); - window.update_watermark(10); - expect(window.get_current_watermark()).toBe(10); - }); - test('should return the window instance', () => { - const windowInstance = window.get_window_instance(1); - expect(windowInstance.open).toBe(-5); - expect(windowInstance.close).toBe(5); - const windowInstance2 = window.get_window_instance(6); - expect(windowInstance2.open).toBe(0); - expect(windowInstance2.close).toBe(10); - }); - test('should process late elements', () => { - window.add(quad1, 6); - window.add(quad2, 4); // Late element - window.process_late_elements(); - const quadContainer = window.getContent(0); - console.log(quadContainer); - expect(quadContainer === null || quadContainer === void 0 ? void 0 : quadContainer.len()).toBe(1); - }); - test('should update current time when adding a new element', () => { - const initial_time = window.time; - const new_time = initial_time + 10; - window.add(quad1, new_time); - expect(window.time).toBe(new_time); - }); - test('should trigger on window change', (done) => { - const report_window = new s2r_1.CSPARQLWindow('reportWindow', width, slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, startTime, maxDelay); - const callback = jest.fn((data) => { - console.log('Callback called'); - expect(data.len()).toBe(1); - expect(data.elements.has(quad1)).toBeTruthy(); - done(); - }); - report_window.subscribe('RStream', callback); - // Add first element to the window - report_window.add(quad1, 1); - // Now moving the time forward to trigger the window close report strategy - report_window.set_current_time(11); - report_window.update_watermark(23); - expect(callback).toHaveBeenCalledTimes(1); - }); -}); -describe('CSPARQL Window Watermark Test', () => { - let csparqlWindow; - let window1; - let window2; - let quadContainer1; - let quadContainer2; - let quad1; - beforeEach(() => { - quad1 = {}; - csparqlWindow = new s2r_1.CSPARQLWindow('testWindow', 10, 5, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 5); - window1 = new s2r_1.WindowInstance(0, 10); - window2 = new s2r_1.WindowInstance(5, 15); - quadContainer1 = new s2r_1.QuadContainer(new Set([quad1]), 5); - quadContainer2 = new s2r_1.QuadContainer(new Set([quad1]), 11); - csparqlWindow.active_windows.set(window1, quadContainer1); - csparqlWindow.active_windows.set(window2, quadContainer2); - }); - afterEach(() => { - csparqlWindow.set_current_watermark(0); - }); - it('should evict windows out of the watermark', () => { - csparqlWindow.update_watermark(25); - csparqlWindow.evict_and_trigger_on_watermark(); - expect(csparqlWindow.active_windows.has(window1)).toBeFalsy(); - expect(csparqlWindow.active_windows.has(window2)).toBeFalsy(); - expect(csparqlWindow.active_windows.size).toBe(0); - }); - it('should not evict windows within the watermark', () => { - csparqlWindow.set_current_watermark(0); - expect(csparqlWindow.active_windows.has(window1)).toBeTruthy(); - expect(csparqlWindow.active_windows.has(window2)).toBeTruthy(); - }); - it('should not evict windows if the current watermark is still under the decided max delay allowed', () => { - csparqlWindow.update_watermark(10); - csparqlWindow.evict_and_trigger_on_watermark(); - expect(csparqlWindow.active_windows.has(window1)).toBeTruthy(); - expect(csparqlWindow.active_windows.has(window2)).toBeTruthy(); - }); -}); -describe('CSPARQLWindow emit_on_trigger', () => { - let csparqlWindow; - let quad1; - let window1; - let quadContainer1; - beforeEach(() => { - quad1 = {}; - csparqlWindow = new s2r_1.CSPARQLWindow('testWindow', 10, 5, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 5); - window1 = new s2r_1.WindowInstance(0, 10); - quadContainer1 = new s2r_1.QuadContainer(new Set([quad1]), 5); - csparqlWindow.active_windows.set(window1, quadContainer1); - csparqlWindow.pending_triggers.add(window1); - }); - it('should emit the correct content when the window is triggered', () => { - const emitSpy = jest.spyOn(csparqlWindow.emitter, 'emit'); - csparqlWindow.set_current_watermark(15); - csparqlWindow.emit_on_trigger(15); - expect(emitSpy).toHaveBeenCalledWith('RStream', quadContainer1); - }); - it('should not emit if the window has no content', () => { - const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); - csparqlWindow.active_windows.delete(window1); // Remove the content from the window - csparqlWindow.emit_on_trigger(15); - expect(emit_spy).not.toHaveBeenCalled(); - }); - it('should emit only if the window has not already triggered', () => { - const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); - window1.has_triggered = true; // Set the window to already triggered - csparqlWindow.emit_on_trigger(15); - expect(emit_spy).not.toHaveBeenCalled(); - }); - it('should clear pending triggers once the window is emitted for processing by the R2R operator', () => { - csparqlWindow.emit_on_trigger(15); - expect(csparqlWindow.pending_triggers.size).toBe(0); - }); - it('should handle different report strategies', () => { - csparqlWindow.report = s2r_1.ReportStrategy.OnContentChange; - const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); - csparqlWindow.emit_on_trigger(15); - expect(emit_spy).toHaveBeenCalledWith('RStream', quadContainer1); - }); -}); -describe('CSPARQLWindow get quads from active windows', () => { - let csparqlWindow; - let quad1; - let window1; - let quadContainer1; - let window2; - let quadContainer2; - beforeEach(() => { - quad1 = {}; - csparqlWindow = new s2r_1.CSPARQLWindow('testWindow', 10, 5, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, 5); - window1 = new s2r_1.WindowInstance(0, 10); - quadContainer1 = new s2r_1.QuadContainer(new Set([quad1]), 9); - window2 = new s2r_1.WindowInstance(5, 15); - quadContainer2 = new s2r_1.QuadContainer(new Set([quad1]), 9); - csparqlWindow.active_windows.set(window1, quadContainer1); - csparqlWindow.active_windows.set(window2, quadContainer2); - }); - it('should return the correct content from the active windows', () => { - const target_window = new s2r_1.WindowInstance(0, 10); - const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); - expect(content).toBe(quadContainer1); - }); - it('should return undefined if no matching window is found', () => { - const target_window = new s2r_1.WindowInstance(10, 20); - const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); - expect(content).toBeUndefined(); - }); - it('should add a window to pending triggers', () => { - csparqlWindow.add(quad1, 2); - const window_instance = csparqlWindow.get_window_instance(2); - expect(hasWindowInstance(csparqlWindow.pending_triggers, window_instance)).toBe(true); - }); -}); -/** - * Check if the set contains the window instance. - * @param {Set} set - The set of window instances. - * @param {WindowInstance} window - The window instance to check. - * @returns {boolean} - True if the window instance is in the set, false otherwise. - */ -function hasWindowInstance(set, window) { - for (const elem of set) { - if (elem.open === window.open && elem.close === window.close) { - return true; - } - } - return false; -} -describe('Gamma Operator', () => { - it('should return the correct gamma value', () => { - const shape = 4; - const scale = 3; - const gamma = (0, s2r_1.gammaOperator)(shape, scale); - console.log(gamma); - }); -}); diff --git a/dist/rsp.d.ts b/dist/rsp.d.ts deleted file mode 100644 index dda5590..0000000 --- a/dist/rsp.d.ts +++ /dev/null @@ -1,75 +0,0 @@ -/// -import { CSPARQLWindow } from "./operators/s2r"; -import { EventEmitter } from "events"; -import { Quad } from 'n3'; -export type binding_with_timestamp = { - bindings: any; - timestamp_from: number; - timestamp_to: number; -}; -/** - * RDF Stream Class to represent the stream of RDF Data. - * It emits the data to the CSPARQL Window for processing. - */ -export declare class RDFStream { - name: string; - emitter: EventEmitter; - /** - * Constructor for the RDFStream class. - * @param {string} name - The name of the stream to be created. - * @param {CSPARQLWindow} window - The CSPARQL Window to which the stream is to be processed and emitted by the S2R Operator. - */ - constructor(name: string, window: CSPARQLWindow); - /** - * Adds the event to the RDF Stream to be processed by the RSP Engine. - * @param {Set} event - The event to be added to the stream. The event is a set of quads of the form {subject, predicate, object, graph}. - * @param {number} ts - The timestamp of the event. - */ - add(event: Set, ts: number): void; -} -/** - * RSPEngine Class to represent the RSP Engine. - * It contains the windows and streams of the RSP Engine. - */ -export declare class RSPEngine { - windows: Array; - streams: Map; - max_delay: number; - time_to_trigger_processing_late_elements: number; - private r2r; - private logger; - /** - * Constructor for the RSPEngine class. - * @param {string} query - The query to be executed by the RSP Engine. - * @param {{max_delay: number, time_to_trigger_processing_late_elements: number}} opts - The options for the RSP Engine for processing the data if they are late or out of order. - * @param {number} opts.max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. - * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. - * @param {number} opts.time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements in the window. - * This field is optional and defaults to 60000 milliseconds. - */ - constructor(query: string, opts?: { - max_delay?: number; - time_to_trigger_processing_late_elements?: number; - }); - /** - * Register the RSP Engine to start processing the data. - * @returns {any} - The event emitter to emit the data to the RSP Engine. - */ - register(): any; - /** - * Get the stream by the stream name. - * @param {string} stream_name - The name of the stream to be fetched. - * @returns {RDFStream | undefined} - The stream with the given name. - */ - getStream(stream_name: string): RDFStream | undefined; - /** - * Add static data to the RSP Engine. - * @param {Quad} static_data - The static data to be added to the RSP Engine. - */ - addStaticData(static_data: Quad): void; - /** - * Get all the streams of the RSP Engine. - * @returns {string[]} - The list of all the streams in the RSP Engine. - */ - get_all_streams(): string[]; -} diff --git a/dist/rsp.js b/dist/rsp.js deleted file mode 100644 index d1abe46..0000000 --- a/dist/rsp.js +++ /dev/null @@ -1,186 +0,0 @@ -"use strict"; -var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - var desc = Object.getOwnPropertyDescriptor(m, k); - if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { - desc = { enumerable: true, get: function() { return m[k]; } }; - } - Object.defineProperty(o, k2, desc); -}) : (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - o[k2] = m[k]; -})); -var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { - Object.defineProperty(o, "default", { enumerable: true, value: v }); -}) : function(o, v) { - o["default"] = v; -}); -var __importStar = (this && this.__importStar) || function (mod) { - if (mod && mod.__esModule) return mod; - var result = {}; - if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); - __setModuleDefault(result, mod); - return result; -}; -var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { - function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } - return new (P || (P = Promise))(function (resolve, reject) { - function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } - function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } - function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } - step((generator = generator.apply(thisArg, _arguments || [])).next()); - }); -}; -Object.defineProperty(exports, "__esModule", { value: true }); -exports.RSPEngine = exports.RDFStream = void 0; -const s2r_1 = require("./operators/s2r"); -const r2r_1 = require("./operators/r2r"); -const LOG_CONFIG = __importStar(require("./config/log_config.json")); -const Logger_1 = require("./util/Logger"); -const N3 = require('n3'); -const { DataFactory } = N3; -const { namedNode } = DataFactory; -const rspql_1 = require("./rspql"); -/** - * RDF Stream Class to represent the stream of RDF Data. - * It emits the data to the CSPARQL Window for processing. - */ -class RDFStream { - /** - * Constructor for the RDFStream class. - * @param {string} name - The name of the stream to be created. - * @param {CSPARQLWindow} window - The CSPARQL Window to which the stream is to be processed and emitted by the S2R Operator. - */ - constructor(name, window) { - this.name = name; - const EventEmitter = require('events').EventEmitter; - this.emitter = new EventEmitter(); - this.emitter.on('data', (quadcontainer) => { - // @ts-ignore - quadcontainer.elements._graph = namedNode(window.name); - // @ts-ignore - window.add(quadcontainer.elements, quadcontainer.last_time_changed()); - }); - } - /** - * Adds the event to the RDF Stream to be processed by the RSP Engine. - * @param {Set} event - The event to be added to the stream. The event is a set of quads of the form {subject, predicate, object, graph}. - * @param {number} ts - The timestamp of the event. - */ - add(event, ts) { - this.emitter.emit('data', new s2r_1.QuadContainer(event, ts)); - } -} -exports.RDFStream = RDFStream; -/** - * RSPEngine Class to represent the RSP Engine. - * It contains the windows and streams of the RSP Engine. - */ -class RSPEngine { - /** - * Constructor for the RSPEngine class. - * @param {string} query - The query to be executed by the RSP Engine. - * @param {{max_delay: number, time_to_trigger_processing_late_elements: number}} opts - The options for the RSP Engine for processing the data if they are late or out of order. - * @param {number} opts.max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. - * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. - * @param {number} opts.time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements in the window. - * This field is optional and defaults to 60000 milliseconds. - */ - constructor(query, opts) { - this.windows = new Array(); - if (opts) { - this.max_delay = opts.max_delay ? opts.max_delay : 0; - this.time_to_trigger_processing_late_elements = opts.time_to_trigger_processing_late_elements ? opts.time_to_trigger_processing_late_elements : 0; - } - else { - this.max_delay = 0; - this.time_to_trigger_processing_late_elements = 60000; - } - this.streams = new Map(); - const logLevel = Logger_1.LogLevel[LOG_CONFIG.log_level]; - this.logger = new Logger_1.Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination); - const parser = new rspql_1.RSPQLParser(); - const parsed_query = parser.parse(query); - parsed_query.s2r.forEach((window) => { - const windowImpl = new s2r_1.CSPARQLWindow(window.window_name, window.width, window.slide, s2r_1.ReportStrategy.OnWindowClose, s2r_1.Tick.TimeDriven, 0, this.max_delay); - this.windows.push(windowImpl); - const stream = new RDFStream(window.stream_name, windowImpl); - this.streams.set(window.stream_name, stream); - }); - this.r2r = new r2r_1.R2ROperator(parsed_query.sparql); - } - /** - * Register the RSP Engine to start processing the data. - * @returns {any} - The event emitter to emit the data to the RSP Engine. - */ - register() { - const EventEmitter = require('events').EventEmitter; - const emitter = new EventEmitter(); - this.windows.forEach((window) => { - window.subscribe("RStream", (data) => __awaiter(this, void 0, void 0, function* () { - if (data) { - if (data.len() > 0) { - this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); - console.log(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); - // iterate over all the windows - for (const windowIt of this.windows) { - // filter out the current triggering one - if (windowIt != window) { - const currentWindowData = windowIt.getContent(data.last_time_changed()); - if (currentWindowData) { - // add the content of the other windows to the quad container - currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); - } - } - } - this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); - console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); - const bindingsStream = yield this.r2r.execute(data); - this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); - bindingsStream.on('data', (binding) => { - const object_with_timestamp = { - bindings: binding, - timestamp_from: window.t0, - timestamp_to: window.t0 + window.slide - }; - window.t0 += window.slide; - emitter.emit("RStream", object_with_timestamp); - }); - bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); - }); - yield bindingsStream; - } - } - })); - }); - return emitter; - } - /** - * Get the stream by the stream name. - * @param {string} stream_name - The name of the stream to be fetched. - * @returns {RDFStream | undefined} - The stream with the given name. - */ - getStream(stream_name) { - return this.streams.get(stream_name); - } - /** - * Add static data to the RSP Engine. - * @param {Quad} static_data - The static data to be added to the RSP Engine. - */ - addStaticData(static_data) { - this.r2r.addStaticData(static_data); - } - /** - * Get all the streams of the RSP Engine. - * @returns {string[]} - The list of all the streams in the RSP Engine. - */ - get_all_streams() { - const streams = []; - this.streams.forEach((stream) => { - streams.push(stream.name); - }); - return streams; - } -} -exports.RSPEngine = RSPEngine; diff --git a/dist/rsp.test.d.ts b/dist/rsp.test.d.ts deleted file mode 100644 index cb0ff5c..0000000 --- a/dist/rsp.test.d.ts +++ /dev/null @@ -1 +0,0 @@ -export {}; diff --git a/dist/rsp.test.js b/dist/rsp.test.js deleted file mode 100644 index 4138ce5..0000000 --- a/dist/rsp.test.js +++ /dev/null @@ -1,379 +0,0 @@ -"use strict"; -var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { - function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } - return new (P || (P = Promise))(function (resolve, reject) { - function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } - function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } - function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } - step((generator = generator.apply(thisArg, _arguments || [])).next()); - }); -}; -Object.defineProperty(exports, "__esModule", { value: true }); -const rsp_1 = require("./rsp"); -const N3 = require('n3'); -const { DataFactory } = N3; -const { namedNode, defaultGraph, quad, literal } = DataFactory; -/** - * Generate data for the test. - * @param {number} num_events - The number of events to generate. - * @param {RDFStream[]} rdfStreams - The RDF Streams to which the data is to be added. - * @returns {void} - The data generation. - */ -function generate_data(num_events, rdfStreams) { - for (let i = 0; i < num_events; i++) { - rdfStreams.forEach((stream) => { - const stream_element = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - stream.add(stream_element, i); - }); - } -} -/** - * Generate data for the test. - * @param {number} num_events - The number of events to generate. - * @param {RDFStream} rdfStream - The RDF Stream to which the data is to be added. - * @returns {Promise} - The promise of the data generation. - */ -function generate_data2(num_events, rdfStream) { - return __awaiter(this, void 0, void 0, function* () { - for (let i = 0; i < num_events; i++) { - const stream_element = quad(namedNode('https://rsp.js/test_subject2_' + i), namedNode('http://rsp.js/test_property2'), namedNode('http://rsp.js/test_object2'), defaultGraph()); - rdfStream.add(stream_element, i); - } - }); -} -test('rsp_consumer_test', () => __awaiter(void 0, void 0, void 0, function* () { - const query = `PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE { - WINDOW :w1 { ?s ?p ?o} - }`; - const rspEngine = new rsp_1.RSPEngine(query); - const stream = rspEngine.getStream("https://rsp.js/stream1"); - const emitter = rspEngine.register(); - const results = new Array(); - // @ts-ignore - emitter.on('RStream', (object) => { - console.log(`received result ${object.bindings.toString()}`); - results.push(object.bindings.toString()); - }); - if (stream) { - generate_data(10, [stream]); - } - // @ts-ignore - const sleep = (ms) => new Promise(r => setTimeout(r, ms)); - yield sleep(2000); - expect(results.length).toBe(2 + 4 + 6 + 8); -})); -test('rsp_multiple_same_window_test', () => __awaiter(void 0, void 0, void 0, function* () { - const query = `PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - FROM NAMED WINDOW :w2 ON STREAM :stream2 [RANGE 10 STEP 2] - - WHERE{ - WINDOW :w1 { ?s ?p ?o} - WINDOW :w2 { ?s ?p ?o} - }`; - const rspEngine = new rsp_1.RSPEngine(query); - const stream1 = rspEngine.getStream("https://rsp.js/stream1"); - const stream2 = rspEngine.getStream("https://rsp.js/stream2"); - const emitter = rspEngine.register(); - const results = new Array(); - console.log(rspEngine.get_all_streams()); - // @ts-ignore - emitter.on('RStream', (object) => { - console.log("received results"); - results.push(object.bindings.toString()); - }); - if (stream1 && stream2) { - generate_data(10, [stream1, stream2]); - } - // @ts-ignore - const sleep = (ms) => new Promise(r => setTimeout(r, ms)); - yield sleep(1000); - expect(results.length).toBe(2 * (2 + 4 + 6 + 8)); - console.log(results); -})); -test('rsp_multiple_difff_window_test', () => __awaiter(void 0, void 0, void 0, function* () { - const query = `PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - FROM NAMED WINDOW :w2 ON STREAM :stream2 [RANGE 20 STEP 10] - - WHERE{ - WINDOW :w1 { ?s ?p ?o} - WINDOW :w2 { ?s ?p2 ?o2} - }`; - const rspEngine = new rsp_1.RSPEngine(query); - const stream1 = rspEngine.getStream("https://rsp.js/stream1"); - const stream2 = rspEngine.getStream("https://rsp.js/stream2"); - const emitter = rspEngine.register(); - const results = new Array(); - // @ts-ignore - emitter.on('RStream', (object) => { - console.log("received results"); - results.push(object.bindings.toString()); - }); - if (stream1 && stream2) { - for (let i = 0; i < 10; i++) { - const stream_element = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - stream1.add(stream_element, i); - const stream_element2 = quad(namedNode('https://rsp.js/test_subject_' + i), namedNode('http://rsp.js/test_property2'), namedNode('http://rsp.js/test_object2'), defaultGraph()); - stream2.add(stream_element2, i); - } - } - // @ts-ignore - const sleep = (ms) => new Promise(r => setTimeout(r, ms)); - yield sleep(2000); - expect(results.length).toBe(2 + 4 + 6 + 8); - console.log(results); -})); -test('rsp_static_plus_window_test', () => __awaiter(void 0, void 0, void 0, function* () { - const query = `PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - - WHERE{ - ?o :hasInfo :someInfo. - WINDOW :w1 { ?s ?p ?o} - }`; - const rspEngine = new rsp_1.RSPEngine(query); - const static_data = quad(namedNode('http://rsp.js/test_object'), namedNode('https://rsp.js/hasInfo'), namedNode('https://rsp.js/someInfo'), defaultGraph()); - rspEngine.addStaticData(static_data); - const stream1 = rspEngine.getStream("https://rsp.js/stream1"); - const emitter = rspEngine.register(); - const results = new Array(); - // @ts-ignore - emitter.on('RStream', (object) => { - console.log(`received result: ${object.bindings.toString()}`); - results.push(object.bindings.toString()); - }); - if (stream1) { - generate_data(10, [stream1]); - } - // @ts-ignore - const sleep = (ms) => new Promise(r => setTimeout(r, ms)); - yield sleep(1000); - expect(results.length).toBe(2 + 4 + 6 + 8); - console.log(results); -})); -test('test_get_all_streams', () => { - const query = `PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - - WHERE{ - ?o :hasInfo :someInfo. - WINDOW :w1 { ?s ?p ?o} - }`; - const rspEngine = new rsp_1.RSPEngine(query); - const streams_registered = rspEngine.get_all_streams(); - expect(streams_registered.length).toBe(1); - expect(streams_registered[0]).toBe("https://rsp.js/stream1"); -}); -test('test_out_of_order_event_processing', () => __awaiter(void 0, void 0, void 0, function* () { - const query = `PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE{ - WINDOW :w1 { ?s ?p ?o} - }`; - const rspEngine = new rsp_1.RSPEngine(query); - const stream = rspEngine.getStream("https://rsp.js/stream1"); - const emitter = rspEngine.register(); - const results = new Array(); - emitter.on('RStream', (object) => { - console.log("received results"); - results.push(object.bindings.toString()); - }); - // @ts-ignore - if (stream) { - generate_data(10, [stream]); - } - if (stream) { - yield generate_data2(10, stream); - } - // expect(results.length).toBe(2 + 4 + 6 + 8 + 2 + 4 + 6 + 8); - console.log(results.length); -})); -test('test setting the max delay for out of order events', () => __awaiter(void 0, void 0, void 0, function* () { - const query = `PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE{ - WINDOW :w1 { ?s ?p ?o} - }`; - const rsp_engine = new rsp_1.RSPEngine(query); - expect(rsp_engine.max_delay).toBe(0); - const rsp_engine_2 = new rsp_1.RSPEngine(query, { - max_delay: 1000, - time_to_trigger_processing_late_elements: 60000 - }); - expect(rsp_engine_2.max_delay).toBe(1000); -})); -test('test out of order processing with different delays', () => __awaiter(void 0, void 0, void 0, function* () { - const query = ` - PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE{ - WINDOW :w1 { ?s ?p ?o} - } - `; - const rsp_engine = new rsp_1.RSPEngine(query); - const stream = rsp_engine.getStream("https://rsp.js/stream1"); - const emitter = rsp_engine.register(); - const results = new Array(); - const event = quad(namedNode(`https://rsp.js/test_subject`), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - emitter.on('RStream', (object) => { - results.push(object.bindings.toString()); - }); - if (stream) { - stream.add(event, 0); - stream.add(event, 3); - stream.add(event, 1); - stream.add(event, 2); - stream.add(event, 4); - } - const sleep = (ms) => new Promise(r => setTimeout(r, ms)); - yield sleep(2000); - expect(results.length).toBeGreaterThan(0); - console.log(results); -})); -test('test ooo event processing with varying delay settings', () => __awaiter(void 0, void 0, void 0, function* () { - jest.setTimeout(100000); - const query = ` - PREFIX : - REGISTER RStream AS - SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE{ - WINDOW :w1 { ?s ?p ?o} - } - `; - const rsp_engine = new rsp_1.RSPEngine(query, { - max_delay: 1000, - time_to_trigger_processing_late_elements: 1000 - }); - const stream = rsp_engine.getStream("https://rsp.js/stream1"); - const emitter = rsp_engine.register(); - const results = new Array(); - const event = quad(namedNode(`https://rsp.js/test_subject`), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), defaultGraph()); - emitter.on('RStream', (object) => { - results.push(object.bindings.toString()); - }); - const sleep = (ms) => new Promise(r => setTimeout(r, ms)); - if (stream) { - stream.add(event, 0); - stream.add(event, 3); - stream.add(event, 1); - stream.add(event, 2); - stream.add(event, 4); - stream.add(event, 5); - stream.add(event, 6); - stream.add(event, 7); - stream.add(event, 8); - stream.add(event, 9); - stream.add(event, 7); - } - yield sleep(2000); - expect(results.length).toBeGreaterThan(0); - console.log(results); -})); -describe('test the rsp engine with out of order processing with various data frequency', () => { - const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; - const location_two = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-y/"; - const location_three = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-z/"; - const query = ` - PREFIX : - PREFIX saref: - PREFIX dahccsensors: - PREFIX func: - REGISTER RStream AS - SELECT ?o - - FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 6000 STEP 2000] - FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 6000 STEP 2000] - FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 6000 STEP 2000] - - WHERE { - WINDOW :w1 { - ?s saref:hasValue ?o . - ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . - } - WINDOW :w2 { - ?s saref:hasValue ?o2 . - ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . - } - WINDOW :w3 { - ?s saref:hasValue ?o3 . - ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . - } - } - `; - test('testing RSP Engine with 4Hz data frequency', () => __awaiter(void 0, void 0, void 0, function* () { - jest.setTimeout(100000); - const rsp_engine = new rsp_1.RSPEngine(query, { - max_delay: 1000, - time_to_trigger_processing_late_elements: 60000 - }); - const emitter = rsp_engine.register(); - const results = new Array(); - const stream_x = yield rsp_engine.getStream(location_one); - const stream_y = yield rsp_engine.getStream(location_two); - const stream_z = yield rsp_engine.getStream(location_three); - if (stream_x && stream_y && stream_z) { - const rdf_streams = [stream_x, stream_y, stream_z]; - generate_dummy_data(500, rdf_streams, 4); - } - emitter.on('RStream', (object) => { - console.log(object.bindings.toString()); - results.push(object.bindings.toString()); - }); - yield sleep(500000); - console.log(results); - })); -}); -/** - * Generate dummy data for the test. - * @param {number} number_of_events - The number of events to generate. - * @param {RDFStream[]} rdf_streams - The RDF Streams to which the data is to be added. - * @param {number} frequency - The frequency of the data to be generated. - * @returns {Promise} - The promise of the dummy data generation. - */ -function generate_dummy_data(number_of_events, rdf_streams, frequency) { - return __awaiter(this, void 0, void 0, function* () { - let events_generated = 0; - const sleep_interval = 1000 / frequency; - while (events_generated < number_of_events) { - rdf_streams.forEach((stream) => { - if (events_generated < number_of_events) { - const stream_element = quad(namedNode('https://rsp.js/test_subject_' + events_generated), namedNode('https://saref.etsi.org/core/hasValue'), literal(`${Math.random() * 10}`, namedNode('http://www.w3.org/2001/XMLSchema#integer')), defaultGraph()); - const stream_element_two = quad(namedNode('https://rsp.js/test_subject_' + events_generated), namedNode('https://saref.etsi.org/core/relatesToProperty'), namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), defaultGraph()); - const timestamp = Date.now(); - stream.add(stream_element, timestamp); - stream.add(stream_element_two, timestamp); - events_generated = events_generated + 1; - } - }); - yield sleep(sleep_interval); - } - }); -} -/** - * Sleep function. - * @param {number} ms - The time to sleep in milliseconds. - * @returns {Promise} - The promise of the sleep function. - */ -function sleep(ms) { - return new Promise(resolve => setTimeout(resolve, ms)); -} diff --git a/dist/rspql.d.ts b/dist/rspql.d.ts deleted file mode 100644 index 6e71de6..0000000 --- a/dist/rspql.d.ts +++ /dev/null @@ -1,62 +0,0 @@ -/** - * Parser for RSP-QL queries to extract the SPARQL query and the window definitions. - */ -export declare class ParsedQuery { - sparql: string; - r2s: R2S; - s2r: Array; - /** - * Constructor to initialize the ParsedQuery object with default values. - */ - constructor(); - /** - * Set the SPARQL query for the ParsedQuery object. - * @param {string} sparql - The SPARQL query to be set. - */ - set_sparql(sparql: string): void; - /** - * Set the R2S operator for the ParsedQuery object. - * @param {R2S} r2s - The R2S operator to be set. - */ - set_r2s(r2s: R2S): void; - /** - * Add a S2R window definition to the ParsedQuery object. - * @param {WindowDefinition} s2r - The window definition to be added. - */ - add_s2r(s2r: WindowDefinition): void; -} -/** - * Interface for the Window Definition in the RSP-QL query. - */ -export type WindowDefinition = { - window_name: string; - stream_name: string; - width: number; - slide: number; -}; -/** - * Interface for the R2S operator in the RSP-QL query. - */ -type R2S = { - operator: "RStream" | "IStream" | "DStream"; - name: string; -}; -/** - * RSP-QL Parser Class to parse the RSP-QL query and extract the SPARQL query and the window definitions. - */ -export declare class RSPQLParser { - /** - * Parse the RSP-QL query to extract the SPARQL query and the window definitions. - * @param {string} query - The RSP-QL query to be parsed. - * @returns {ParsedQuery} - The parsed query object containing the SPARQL query and the window definitions. - */ - parse(query: string): ParsedQuery; - /** - * Unwrap the prefixed IRI to the full IRI using the prefix mapper. - * @param {string} prefixedIri - The prefixed IRI to be unwrapped. - * @param {Map} mapper - The prefix mapper to be used for unwrapping. - * @returns {string} - The unwrapped full IRI. - */ - unwrap(prefixedIri: string, mapper: Map): string; -} -export {}; diff --git a/dist/rspql.js b/dist/rspql.js deleted file mode 100644 index 358bb51..0000000 --- a/dist/rspql.js +++ /dev/null @@ -1,116 +0,0 @@ -"use strict"; -Object.defineProperty(exports, "__esModule", { value: true }); -exports.RSPQLParser = exports.ParsedQuery = void 0; -/** - * Parser for RSP-QL queries to extract the SPARQL query and the window definitions. - */ -class ParsedQuery { - /** - * Constructor to initialize the ParsedQuery object with default values. - */ - constructor() { - this.sparql = "Select * WHERE{?s ?p ?o}"; - // @ts-ignore - this.r2s = { operator: "RStream", name: "undefined" }; - this.s2r = new Array(); - } - /** - * Set the SPARQL query for the ParsedQuery object. - * @param {string} sparql - The SPARQL query to be set. - */ - set_sparql(sparql) { - this.sparql = sparql; - } - /** - * Set the R2S operator for the ParsedQuery object. - * @param {R2S} r2s - The R2S operator to be set. - */ - set_r2s(r2s) { - this.r2s = r2s; - } - /** - * Add a S2R window definition to the ParsedQuery object. - * @param {WindowDefinition} s2r - The window definition to be added. - */ - add_s2r(s2r) { - this.s2r.push(s2r); - } -} -exports.ParsedQuery = ParsedQuery; -/** - * RSP-QL Parser Class to parse the RSP-QL query and extract the SPARQL query and the window definitions. - */ -class RSPQLParser { - /** - * Parse the RSP-QL query to extract the SPARQL query and the window definitions. - * @param {string} query - The RSP-QL query to be parsed. - * @returns {ParsedQuery} - The parsed query object containing the SPARQL query and the window definitions. - */ - parse(query) { - const parsed = new ParsedQuery(); - const split = query.split(/\r?\n/); - const sparqlLines = new Array(); - const prefixMapper = new Map(); - split.forEach((line) => { - const trimmed_line = line.trim(); - //R2S - if (trimmed_line.startsWith("REGISTER")) { - const regexp = /REGISTER +([^ ]+) +<([^>]+)> AS/g; - const matches = trimmed_line.matchAll(regexp); - for (const match of matches) { - if (match[1] === "RStream" || match[1] === "DStream" || match[1] === "IStream") { - parsed.set_r2s({ operator: match[1], name: match[2] }); - } - } - } - else if (trimmed_line.startsWith("FROM NAMED WINDOW")) { - const regexp = /FROM +NAMED +WINDOW +([^ ]+) +ON +STREAM +([^ ]+) +\[RANGE +([^ ]+) +STEP +([^ ]+)\]/g; - const matches = trimmed_line.matchAll(regexp); - for (const match of matches) { - parsed.add_s2r({ - window_name: this.unwrap(match[1], prefixMapper), - stream_name: this.unwrap(match[2], prefixMapper), - width: Number(match[3]), - slide: Number(match[4]) - }); - } - } - else { - let sparqlLine = trimmed_line; - if (sparqlLine.startsWith("WINDOW")) { - sparqlLine = sparqlLine.replace("WINDOW", "GRAPH"); - } - if (sparqlLine.startsWith("PREFIX")) { - const regexp = /PREFIX +([^:]*): +<([^>]+)>/g; - const matches = trimmed_line.matchAll(regexp); - for (const match of matches) { - prefixMapper.set(match[1], match[2]); - } - } - sparqlLines.push(sparqlLine); - } - }); - parsed.sparql = sparqlLines.join("\n"); - return parsed; - } - /** - * Unwrap the prefixed IRI to the full IRI using the prefix mapper. - * @param {string} prefixedIri - The prefixed IRI to be unwrapped. - * @param {Map} mapper - The prefix mapper to be used for unwrapping. - * @returns {string} - The unwrapped full IRI. - */ - unwrap(prefixedIri, mapper) { - if (prefixedIri.trim().startsWith("<")) { - return prefixedIri.trim().slice(1, -1); - } - const split = prefixedIri.trim().split(":"); - const iri = split[0]; - if (mapper.has(iri)) { - return mapper.get(iri) + split[1]; - } - else { - return ""; - } - } -} -exports.RSPQLParser = RSPQLParser; diff --git a/dist/rspql.test.d.ts b/dist/rspql.test.d.ts deleted file mode 100644 index cb0ff5c..0000000 --- a/dist/rspql.test.d.ts +++ /dev/null @@ -1 +0,0 @@ -export {}; diff --git a/dist/rspql.test.js b/dist/rspql.test.js deleted file mode 100644 index a4c5a66..0000000 --- a/dist/rspql.test.js +++ /dev/null @@ -1,82 +0,0 @@ -"use strict"; -var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { - function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } - return new (P || (P = Promise))(function (resolve, reject) { - function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } - function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } - function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } - step((generator = generator.apply(thisArg, _arguments || [])).next()); - }); -}; -Object.defineProperty(exports, "__esModule", { value: true }); -const rspql_1 = require("./rspql"); -const simple_query = `PREFIX : - REGISTER RStream AS - SELECT AVG(?v) as ?avgTemp - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - WHERE{ - WINDOW :w1 { ?sensor :value ?v ; :measurement: ?m } - }`; -const advanced_query = `PREFIX : - REGISTER RStream AS - SELECT AVG(?v) as ?avgTemp - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] - FROM NAMED WINDOW :w2 ON STREAM :stream2 [RANGE 10 STEP 2] - - WHERE{ - ?sensor a :TempSensor. - WINDOW :w1 { ?sensor :value ?v ; :measurement: ?m } - WINDOW :w2 { ?sensor :value ?v ; :measurement: ?m } - }`; -test('test_r2s', () => __awaiter(void 0, void 0, void 0, function* () { - const parser = new rspql_1.RSPQLParser(); - const parsed_query = parser.parse(simple_query); - const expected_r2s = { operator: "RStream", name: "output" }; - expect(parsed_query.r2s).toStrictEqual(expected_r2s); -})); -test('test_single_window', () => __awaiter(void 0, void 0, void 0, function* () { - const parser = new rspql_1.RSPQLParser(); - const parsed_query = parser.parse(simple_query); - const expected_windows = { window_name: "https://rsp.js/w1", - stream_name: "https://rsp.js/stream1", - width: 10, - slide: 2 }; - expect(parsed_query.s2r[0]).toStrictEqual(expected_windows); -})); -test('test_multiple_window', () => __awaiter(void 0, void 0, void 0, function* () { - const parser = new rspql_1.RSPQLParser(); - const parsed_query = parser.parse(advanced_query); - const expected_windows = [{ window_name: "https://rsp.js/w1", - stream_name: "https://rsp.js/stream1", - width: 10, - slide: 2 }, - { window_name: "https://rsp.js/w2", - stream_name: "https://rsp.js/stream2", - width: 10, - slide: 2 } - ]; - expect(parsed_query.s2r).toStrictEqual(expected_windows); -})); -test('test_simple_sparql_extract', () => __awaiter(void 0, void 0, void 0, function* () { - const parser = new rspql_1.RSPQLParser(); - const parsed_query = parser.parse(simple_query); - const expected_sparql = `PREFIX : -SELECT AVG(?v) as ?avgTemp -WHERE{ -GRAPH :w1 { ?sensor :value ?v ; :measurement: ?m } -}`; - expect(parsed_query.sparql).toStrictEqual(expected_sparql); -})); -test('test_sparql_extract_multiple_windows', () => __awaiter(void 0, void 0, void 0, function* () { - const parser = new rspql_1.RSPQLParser(); - const parsed_query = parser.parse(advanced_query); - const expected_sparql = `PREFIX : -SELECT AVG(?v) as ?avgTemp - -WHERE{ -?sensor a :TempSensor. -GRAPH :w1 { ?sensor :value ?v ; :measurement: ?m } -GRAPH :w2 { ?sensor :value ?v ; :measurement: ?m } -}`; - expect(parsed_query.sparql).toStrictEqual(expected_sparql); -})); diff --git a/dist/util/IntervalManager.js b/dist/util/IntervalManager.js deleted file mode 100644 index a7ab12f..0000000 --- a/dist/util/IntervalManager.js +++ /dev/null @@ -1,28 +0,0 @@ -"use strict"; -Object.defineProperty(exports, "__esModule", { value: true }); -exports.IntervalManager = void 0; -/** - * Class to manage the intervals for the CSPARQL Window. - */ -class IntervalManager { - /** - * Constructor for the IntervalManager class. - * @param {CSPARQLWindow} window_instance - The CSPARQL Window instance for which the interval is to be managed. - */ - constructor(window_instance) { - this.window_instance = window_instance; - } - /** - * Set the interval for the CSPARQL Window. - */ - clear_interval() { - if (this.window_instance.interval_id) { - clearInterval(this.window_instance.interval_id); - console.log(`Interval cleared for window ${this.window_instance.name} with id ${this.window_instance.interval_id}`); - } - else { - console.log(`No interval to clear for window ${this.window_instance.name}`); - } - } -} -exports.IntervalManager = IntervalManager; diff --git a/dist/util/Logger.d.ts b/dist/util/Logger.d.ts deleted file mode 100644 index 027267b..0000000 --- a/dist/util/Logger.d.ts +++ /dev/null @@ -1,126 +0,0 @@ -export declare enum LogLevel { - TRACE = 0, - DEBUG = 1, - INFO = 2, - CONFIG = 3, - WARN = 4, - ERROR = 5, - FATAL = 6, - SEVERE = 7, - AUDIT = 8, - STATS = 9 -} -export declare enum LogDestination { - CONSOLE = 0, - FILE = 1 -} -/** - * Logger class to log messages based on the log level, loggable classes, and log destination. - */ -export declare class Logger { - private log_level; - private loggable_classes; - private log_destination; - /** - * Constructor for the Logger class. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - * @param {any} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - */ - constructor(logLevel: LogLevel, loggableClasses: string[], logDestination: any); - /** - * Set the log level for the logger. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - */ - setLogLevel(logLevel: LogLevel): void; - /** - * Set the loggable classes for the logger. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - */ - setLoggableClasses(loggableClasses: string[]): void; - /** - * Set the log destination for the logger. - * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - */ - setLogDestination(logDestination: LogDestination): void; - /** - * Log the message based on the log level, loggable classes, and log destination. - * @param {LogLevel} level - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - log(level: LogLevel, message: string, className: string): void; - /** - * Log the message with the TRACE log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - trace(message: string, className: string): void; - /** - * Log the message with the DEBUG log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - debug(message: string, className: string): void; - /** - * Log the message with the INFO log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - info(message: string, className: string): void; - /** - * Log the message with the CONFIG log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - config(message: string, className: string): void; - /** - * Log the message with the WARN log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - warn(message: string, className: string): void; - /** - * Log the message with the ERROR log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - error(message: string, className: string): void; - /** - * Log the message with the FATAL log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - fatal(message: string, className: string): void; - /** - * Log the message with the SEVERE log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - severe(message: string, className: string): void; - /** - * Log the message with the AUDIT log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - audit(message: string, className: string): void; - /** - * Log the message with the STATS log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - stats(message: string, className: string): void; - /** - * Get the logger with the specified log level, loggable classes, and log destination. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - * @returns {Logger} - The logger with the specified log level, loggable classes, and log destination. - */ - static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination): Logger; - /** - * Get the logger with the default log level, loggable classes, and log destination. - * @returns {Logger} - The logger with the default log level, loggable classes, and log destination. - */ - static getLoggerWithDefaults(): Logger; -} diff --git a/dist/util/Logger.js b/dist/util/Logger.js deleted file mode 100644 index c1b0f32..0000000 --- a/dist/util/Logger.js +++ /dev/null @@ -1,210 +0,0 @@ -"use strict"; -var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - var desc = Object.getOwnPropertyDescriptor(m, k); - if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { - desc = { enumerable: true, get: function() { return m[k]; } }; - } - Object.defineProperty(o, k2, desc); -}) : (function(o, m, k, k2) { - if (k2 === undefined) k2 = k; - o[k2] = m[k]; -})); -var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { - Object.defineProperty(o, "default", { enumerable: true, value: v }); -}) : function(o, v) { - o["default"] = v; -}); -var __importStar = (this && this.__importStar) || function (mod) { - if (mod && mod.__esModule) return mod; - var result = {}; - if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); - __setModuleDefault(result, mod); - return result; -}; -Object.defineProperty(exports, "__esModule", { value: true }); -exports.Logger = exports.LogDestination = exports.LogLevel = void 0; -const fs = __importStar(require("fs")); -/* eslint-disable no-unused-vars */ -var LogLevel; -(function (LogLevel) { - LogLevel[LogLevel["TRACE"] = 0] = "TRACE"; - LogLevel[LogLevel["DEBUG"] = 1] = "DEBUG"; - LogLevel[LogLevel["INFO"] = 2] = "INFO"; - LogLevel[LogLevel["CONFIG"] = 3] = "CONFIG"; - LogLevel[LogLevel["WARN"] = 4] = "WARN"; - LogLevel[LogLevel["ERROR"] = 5] = "ERROR"; - LogLevel[LogLevel["FATAL"] = 6] = "FATAL"; - LogLevel[LogLevel["SEVERE"] = 7] = "SEVERE"; - LogLevel[LogLevel["AUDIT"] = 8] = "AUDIT"; - LogLevel[LogLevel["STATS"] = 9] = "STATS"; -})(LogLevel = exports.LogLevel || (exports.LogLevel = {})); -var LogDestination; -(function (LogDestination) { - LogDestination[LogDestination["CONSOLE"] = 0] = "CONSOLE"; - LogDestination[LogDestination["FILE"] = 1] = "FILE"; -})(LogDestination = exports.LogDestination || (exports.LogDestination = {})); -/* eslint-enable no-unused-vars */ -/** - * Logger class to log messages based on the log level, loggable classes, and log destination. - */ -class Logger { - /** - * Constructor for the Logger class. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - * @param {any} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - */ - constructor(logLevel, loggableClasses, logDestination) { - this.log_level = logLevel; - this.loggable_classes = loggableClasses; - this.log_destination = logDestination; - console.log(`Logger initialized with log level ${this.log_level}, loggable classes ${this.loggable_classes}, and log destination ${this.log_destination}`); - } - /** - * Set the log level for the logger. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - */ - setLogLevel(logLevel) { - this.log_level = logLevel; - } - /** - * Set the loggable classes for the logger. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - */ - setLoggableClasses(loggableClasses) { - this.loggable_classes = loggableClasses; - } - /** - * Set the log destination for the logger. - * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - */ - setLogDestination(logDestination) { - this.log_destination = logDestination; - } - /** - * Log the message based on the log level, loggable classes, and log destination. - * @param {LogLevel} level - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - log(level, message, className) { - if (level >= this.log_level && this.loggable_classes.includes(className)) { - const logPrefix = `[${LogLevel[level]}] [${className}]`; - const logMessage = `${Date.now()} ${logPrefix} ${message}`; - switch (this.log_destination) { - case 'CONSOLE': - console.log(logMessage); - break; - case 'FILE': - try { - fs.appendFileSync(`./logs/${className}.log`, `${logMessage}\n`); - } - catch (error) { - console.error(`Error writing to file: ${error}`); - } - break; - default: - console.log(`Invalid log destination: ${this.log_destination}`); - } - } - } - /** - * Log the message with the TRACE log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - trace(message, className) { - this.log(LogLevel.TRACE, message, className); - } - /** - * Log the message with the DEBUG log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - debug(message, className) { - this.log(LogLevel.DEBUG, message, className); - } - /** - * Log the message with the INFO log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - info(message, className) { - this.log(LogLevel.INFO, message, className); - } - /** - * Log the message with the CONFIG log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - config(message, className) { - this.log(LogLevel.CONFIG, message, className); - } - /** - * Log the message with the WARN log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - warn(message, className) { - this.log(LogLevel.WARN, message, className); - } - /** - * Log the message with the ERROR log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - error(message, className) { - this.log(LogLevel.ERROR, message, className); - } - /** - * Log the message with the FATAL log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - fatal(message, className) { - this.log(LogLevel.FATAL, message, className); - } - /** - * Log the message with the SEVERE log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - severe(message, className) { - this.log(LogLevel.SEVERE, message, className); - } - /** - * Log the message with the AUDIT log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - audit(message, className) { - this.log(LogLevel.AUDIT, message, className); - } - /** - * Log the message with the STATS log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - stats(message, className) { - this.log(LogLevel.STATS, message, className); - } - /** - * Get the logger with the specified log level, loggable classes, and log destination. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - * @returns {Logger} - The logger with the specified log level, loggable classes, and log destination. - */ - static getLogger(logLevel, loggableClasses, logDestination) { - return new Logger(logLevel, loggableClasses, logDestination); - } - /** - * Get the logger with the default log level, loggable classes, and log destination. - * @returns {Logger} - The logger with the default log level, loggable classes, and log destination. - */ - static getLoggerWithDefaults() { - return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); - } -} -exports.Logger = Logger; diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index 2615f79..5ef7a70 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -1,6 +1,6 @@ import { DataFactory, Quad } from "n3"; const { namedNode, literal, defaultGraph, quad } = DataFactory; -import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer, gammaOperator } from './s2r'; +import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer } from './s2r'; /** * Generate data for the test cases. @@ -154,20 +154,6 @@ describe('CSPARQLWindow OOO', () => { expect(window.if_event_late(2)).toBe(true); }); - - test('should add element to the late buffer', () => { - window.add(quad1, 5); - window.set_current_time(8); - // Add late element - window.buffer_late_event(quad2, 3); - // rejects if it is outside the allowed max_delay window - expect(window.late_buffer.size).toBe(0); - // Adds another late element - window.buffer_late_event(quad2, 7); - // accepts as it is inside the allowed max_delay window - expect(window.late_buffer.size).toBe(1); - }); - test('should buffer late elements', () => { window.add(quad1, 1); window.add(quad2, 0); @@ -388,15 +374,4 @@ function hasWindowInstance(set: Set, window: WindowInstance) { } } return false; -} - - -describe('Gamma Operator', () => { - it('should return the correct gamma value', () => { - const shape = 4; - const scale = 3; - const gamma = gammaOperator(shape, scale); - console.log(gamma); - - }); -}); \ No newline at end of file +} \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 94e27e8..cc032af 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -4,7 +4,6 @@ import fs from 'fs'; import { Quad } from 'n3'; import { Logger, LogLevel, LogDestination } from "../util/Logger"; import * as LOG_CONFIG from "../config/log_config.json"; -const ss = require('simple-statistics'); /* eslint-disable no-unused-vars */ export enum ReportStrategy { @@ -93,12 +92,12 @@ export class QuadContainer { /** * Add the quad to the container of the quads. * @param {Quad} quad - The quad to be added to the container. - * @param {number} ts - The timestamp of the quad. + * @param {number} quad_timestamp - The timestamp of the quad. * @returns {void} - The function returns nothing. */ - add(quad: Quad, ts: number) { + add(quad: Quad, quad_timestamp: number) { this.elements.add(quad); - this.last_time_stamp_changed = ts; + this.last_time_stamp_changed = quad_timestamp; } /** @@ -187,56 +186,97 @@ export class CSPARQLWindow { * @param {number} timestamp - The timestamp of the event. * @returns {void} - The function does not return anything. */ - add(e: Quad, timestamp: number) { - let processing_time = Date.now(); - fs.appendFileSync('time_log.txt', `${processing_time - timestamp}\n`); - console.debug(`Adding [" + ${e} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); - if (this.if_event_late(timestamp)) { - console.log("Event is late at time " + timestamp); - this.buffer_late_event(e, this.time); - return; + + add(event: Quad, timestamp: number) { + console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); + let t_e = timestamp; + let to_evict = new Set(); + if (this.time > t_e) { + // Out of order event handling + console.error(`The event is late and has arrived out of order at time ${timestamp}`); + if (t_e - this.time > this.max_delay) { + // Discard the event if it is too late to be considered in the window based on a simple static heuristic pre-decided + // when the CSPARQL Window was initialized. + console.error("Late element [" + event + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); + } + else if (t_e - this.time <= this.max_delay) { + // The event is late but within the allowed delay, so we will add it to the specific window instance. + for (let w of this.active_windows.keys()) { + if (w.open <= t_e && t_e < w.close) { + let temp_window = this.active_windows.get(w); + if (temp_window) { + temp_window.add(event, t_e); + } + } + else if (t_e >= w.close) { + to_evict.add(w); + } + } + } } - const to_evict = this.process_event(e, timestamp); - if (timestamp > this.time) { + // In order event handling + this.scope(t_e); + for (let w of this.active_windows.keys()) { + console.debug(`Processing Window ${w.getDefinition()} for the event ${event} at time ${timestamp}`); + if (w.open <= t_e && t_e < w.close) { + console.debug(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`); + let window_to_add = this.active_windows.get(w); + if (window_to_add) { + window_to_add.add(event, t_e); + } + } + else if (t_e >= w.close + this.max_delay && !w.has_triggered) { + console.debug(`Scheduled to evict the window ${w.getDefinition()} at time ${timestamp}`); + to_evict.add(w); + } + } + if (t_e > this.time){ this.time = timestamp; } - this.evict_windows(to_evict); + this.update_watermark(t_e); + this.trigger_window_content(this.current_watermark); } - /** - * Check if the event is late or not based on the timestamp of the event and comparing it to the current time of the window. - * @param {number} timestamp - The timestamp of the event. - * @returns {boolean} - True if the event is late, else false. - */ if_event_late(timestamp: number) { - fs.appendFileSync('time_log_late.txt', `${timestamp - this.time}\n`); return this.time > timestamp; } /** - * Buffer the late event for out-of-order processing based on the maximum delay allowed for the events. - * @param {Quad} e - The event to be buffered. - * @param {number} timestamp - The timestamp of the event. + * Trigger the window content based on the current watermark. + * @param {number} watermark - The current watermark which needs to be processed. * @returns {void} - The function does not return anything. */ - buffer_late_event(e: Quad, timestamp: number) { - if (this.time - timestamp > this.max_delay) { - this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is out of the allowed delay [" + ${this.max_delay} + "]`, `CSPARQLWindow`); - console.error("Late element [" + e + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); - } - else { - this.logger.info(`Late element [" + ${e} + "] with timestamp [" + ${timestamp} + "] is being buffered for out of order processing`, `CSPARQLWindow`); - console.warn("Late element [" + e + "] with timestamp [" + timestamp + "] is being buffered for out of order processing"); - if (!this.late_buffer.has(timestamp)) { - this.late_buffer.set(timestamp, new Set()); - console.log(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`); + trigger_window_content(watermark: number) { + let max_window = null; + let max_time = 0; + + this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { + if (this.compute_report(window, value, watermark)) { + if (window.close > max_time) { + max_time = window.close; + max_window = window; + } + } + }); + + if (max_window) { + if (this.tick == Tick.TimeDriven) { + console.log(max_window); + console.log(max_time); + console.log(watermark); + + if (watermark >= max_time + this.max_delay) { + this.emitter.emit(`RStream`, this.active_windows.get(max_window)); + } + else { + console.error(`Window is out of the watermark and will not trigger`); + } } - this.late_buffer.get(timestamp)?.add(e); - this.logger.info(`Size of the late buffer from the buffer_late_event method: ${this.late_buffer.size}`, `CSPARQLWindow`); } } + /** * Evict the windows that are out of the watermark. * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. @@ -310,7 +350,6 @@ export class CSPARQLWindow { if (new_time > this.current_watermark) { this.current_watermark = new_time; this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); - this.evict_and_trigger_on_watermark(); } else { console.error("Watermark is not increasing"); @@ -403,6 +442,7 @@ export class CSPARQLWindow { /** * Compute the report based on the window instance and the content of the window. + * Max Delay is added to trigger the report computation only after waiting for a certain time. * @param {WindowInstance} w - The window instance for which the report is to be computed. * @param {QuadContainer} content - The content of the window (which is a QuadContainer). * @param {number} timestamp - The timestamp of the event to be processed. @@ -566,8 +606,4 @@ function computeWindowIfAbsent(map: Map, window: map.set(window, mappingFunction(window)); } } -/* eslint-enable no-unused-vars */ - -export function gammaOperator(shape: number, scale: number): number { - return ss.gamma(shape, scale); -} \ No newline at end of file +/* eslint-enable no-unused-vars */ \ No newline at end of file diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 75acba7..9626e44 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -226,12 +226,13 @@ test('test_out_of_order_event_processing', async () => { WINDOW :w1 { ?s ?p ?o} }`; - const rspEngine = new RSPEngine(query); + const rspEngine = new RSPEngine(query, { + max_delay: 1000, + }); const stream = rspEngine.getStream("https://rsp.js/stream1"); const emitter = rspEngine.register(); const results = new Array(); emitter.on('RStream', (object: any) => { - console.log("received results"); results.push(object.bindings.toString()); }); // @ts-ignore @@ -259,7 +260,6 @@ test('test setting the max delay for out of order events', async () => { expect(rsp_engine.max_delay).toBe(0); const rsp_engine_2 = new RSPEngine(query, { max_delay: 1000, - time_to_trigger_processing_late_elements: 60000 }); expect(rsp_engine_2.max_delay).toBe(1000); }); @@ -276,7 +276,9 @@ test('test out of order processing with different delays', async () => { } `; - const rsp_engine = new RSPEngine(query); + const rsp_engine = new RSPEngine(query, { + max_delay: 0 + }); const stream = rsp_engine.getStream("https://rsp.js/stream1"); const emitter = rsp_engine.register(); const results = new Array(); @@ -322,8 +324,7 @@ test('test ooo event processing with varying delay settings', async () => { const rsp_engine = new RSPEngine(query, { - max_delay: 1000, - time_to_trigger_processing_late_elements: 1000 + max_delay: 0, }); const stream = rsp_engine.getStream("https://rsp.js/stream1"); const emitter = rsp_engine.register(); @@ -397,7 +398,6 @@ describe('test the rsp engine with out of order processing with various data fre jest.setTimeout(100000); const rsp_engine = new RSPEngine(query, { max_delay: 1000, - time_to_trigger_processing_late_elements: 60000 }); const emitter = rsp_engine.register(); const results = new Array(); diff --git a/src/rsp.ts b/src/rsp.ts index 73f9ee5..5f6a21b 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -59,31 +59,25 @@ export class RSPEngine { windows: Array; streams: Map; public max_delay: number; - public time_to_trigger_processing_late_elements: number; private r2r: R2ROperator; private logger: Logger; /** * Constructor for the RSPEngine class. * @param {string} query - The query to be executed by the RSP Engine. - * @param {{max_delay: number, time_to_trigger_processing_late_elements: number}} opts - The options for the RSP Engine for processing the data if they are late or out of order. + * @param {{max_delay: number }} opts - The options for the RSP Engine for processing the data if they are late or out of order. * @param {number} opts.max_delay - The maximum delay for the window to be processed in the case of late data arrival and out of order data. * This field is optional and defaults to 0 for no delay expected by the RSP Engine in processing of the data. - * @param {number} opts.time_to_trigger_processing_late_elements - The time to trigger the processing of the late elements in the window. - * This field is optional and defaults to 60000 milliseconds. */ constructor(query: string, opts?: { max_delay?: number - time_to_trigger_processing_late_elements?: number }) { this.windows = new Array(); if (opts) { this.max_delay = opts.max_delay ? opts.max_delay : 0; - this.time_to_trigger_processing_late_elements = opts.time_to_trigger_processing_late_elements ? opts.time_to_trigger_processing_late_elements : 0; } else { this.max_delay = 0; - this.time_to_trigger_processing_late_elements = 60000; } this.streams = new Map(); const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; From 5c28a38ea1f1e54bb6c14959bf1f73e52eb12b3c Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Mon, 26 Aug 2024 14:46:40 +0200 Subject: [PATCH 27/50] refactor: Add conditional check for content length before triggering window --- src/operators/s2r.ts | 22 +++++++++++++--------- src/rsp.test.ts | 2 +- 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index cc032af..cdbb2d7 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -190,7 +190,7 @@ export class CSPARQLWindow { add(event: Quad, timestamp: number) { console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); let t_e = timestamp; - let to_evict = new Set(); + let to_evict = new Set(); if (this.time > t_e) { // Out of order event handling console.error(`The event is late and has arrived out of order at time ${timestamp}`); @@ -230,7 +230,7 @@ export class CSPARQLWindow { to_evict.add(w); } } - if (t_e > this.time){ + if (t_e > this.time) { this.time = timestamp; } this.update_watermark(t_e); @@ -248,7 +248,7 @@ export class CSPARQLWindow { */ trigger_window_content(watermark: number) { - let max_window = null; + let max_window: WindowInstance | null = null; let max_time = 0; this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { @@ -262,12 +262,16 @@ export class CSPARQLWindow { if (max_window) { if (this.tick == Tick.TimeDriven) { - console.log(max_window); - console.log(max_time); - console.log(watermark); - - if (watermark >= max_time + this.max_delay) { - this.emitter.emit(`RStream`, this.active_windows.get(max_window)); + if (watermark >= max_time) { + setTimeout(() => { + if (watermark >= max_time + this.max_delay) { + if (max_window) { + this.emitter.emit('RStream', this.active_windows.get(max_window)); + this.active_windows.delete(max_window); + } + } + }, this.max_delay); + } else { console.error(`Window is out of the watermark and will not trigger`); diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 9626e44..f461314 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -268,7 +268,7 @@ test('test setting the max delay for out of order events', async () => { test('test out of order processing with different delays', async () => { const query = ` PREFIX : - REGISTER RStream AS + REGISTER RStream ASic SELECT * FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] WHERE{ From ba857fc03471b11c2c314253ef1647edf2dedff7 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 28 Aug 2024 13:41:56 +0200 Subject: [PATCH 28/50] refactor: Add event counter and throughput logging to CSPARQLWindow class --- src/operators/s2r.ts | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index cdbb2d7..48f4fb5 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -1,7 +1,7 @@ import { EventEmitter } from "events"; -import fs from 'fs'; // @ts-ignore import { Quad } from 'n3'; +import fs from 'fs'; import { Logger, LogLevel, LogDestination } from "../util/Logger"; import * as LOG_CONFIG from "../config/log_config.json"; @@ -126,6 +126,9 @@ export class CSPARQLWindow { tick: Tick; // The tick of the window emitter: EventEmitter; // The event emitter for the window name: string; // The name of the window + private event_counter: number; // The event counter for the window + private initialization_time: number; // The initialization time of the window + private throughput_interval: number; // The throughput interval for the window private current_watermark: number; // To track the current watermark of the window public late_buffer: Map>; // Buffer for out-of-order late elements public max_delay: number; // The maximum delay allowed for a observation to be considered in the window @@ -141,6 +144,7 @@ export class CSPARQLWindow { * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. */ constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { + this.startThroughputLogging(); this.name = name; this.width = width; this.slide = slide; @@ -156,7 +160,21 @@ export class CSPARQLWindow { this.max_delay = max_delay; this.pending_triggers = new Set(); this.late_buffer = new Map>(); + this.event_counter = 0; + this.initialization_time = Date.now(); + this.throughput_interval = 10000; // logging the throughput every second for the window + } + + startThroughputLogging() { + setInterval(() => { + const current_time = Date.now(); + const elapsed_time = (current_time - this.initialization_time) / 1000; + const throughput = this.event_counter / elapsed_time; + // this.logger.info(`throughput : ${throughput.toFixed(2)} quads/sec`, `CSPARQLWindow`); + }, this.throughput_interval); + } + /** * Get the content of the window at the given timestamp if it exists, else return undefined. * @param {number} timestamp - The timestamp for which the content of the window is to be retrieved. @@ -188,18 +206,25 @@ export class CSPARQLWindow { */ add(event: Quad, timestamp: number) { + this.event_counter++; + this.logger.info(`adding_event`, `CSPARQLWindow`); console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); + let event_latency = Date.now() - timestamp; + this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`); let t_e = timestamp; let to_evict = new Set(); if (this.time > t_e) { + this.logger.info(`out_of_order_event_received`, `CSPARQLWindow`); // Out of order event handling console.error(`The event is late and has arrived out of order at time ${timestamp}`); if (t_e - this.time > this.max_delay) { + this.logger.info(`out_of_order_event_out_of_delay`, `CSPARQLWindow`); // Discard the event if it is too late to be considered in the window based on a simple static heuristic pre-decided // when the CSPARQL Window was initialized. console.error("Late element [" + event + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); } else if (t_e - this.time <= this.max_delay) { + this.logger.info(`out_of_order_event_within_delay`, `CSPARQLWindow`); // The event is late but within the allowed delay, so we will add it to the specific window instance. for (let w of this.active_windows.keys()) { if (w.open <= t_e && t_e < w.close) { @@ -271,7 +296,6 @@ export class CSPARQLWindow { } } }, this.max_delay); - } else { console.error(`Window is out of the watermark and will not trigger`); @@ -353,7 +377,7 @@ export class CSPARQLWindow { update_watermark(new_time: number) { if (new_time > this.current_watermark) { this.current_watermark = new_time; - this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); + // this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); } else { console.error("Watermark is not increasing"); From 6ac26cd1478c0f2ecc31591a15834b89bcd1a205 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 29 Aug 2024 14:52:49 +0200 Subject: [PATCH 29/50] refactor: Add computeWindowIfAbsent function to CSPARQLWindow class --- src/operators/s2r.test.ts | 94 ++++++++++++++++++++++++++++++++------- src/operators/s2r.ts | 69 +++++++--------------------- 2 files changed, 94 insertions(+), 69 deletions(-) diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index 5ef7a70..cb546b3 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -1,6 +1,6 @@ import { DataFactory, Quad } from "n3"; const { namedNode, literal, defaultGraph, quad } = DataFactory; -import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer } from './s2r'; +import { CSPARQLWindow, ReportStrategy, Tick, WindowInstance, QuadContainer, computeWindowIfAbsent } from './s2r'; /** * Generate data for the test cases. @@ -154,13 +154,6 @@ describe('CSPARQLWindow OOO', () => { expect(window.if_event_late(2)).toBe(true); }); - test('should buffer late elements', () => { - window.add(quad1, 1); - window.add(quad2, 0); - expect(window.late_buffer.size).toBe(1); - expect(window.late_buffer.get(0)?.has(quad2)).toBe(true); - }); - test('should evict windows based on watermark', () => { window.add(quad1, 1); window.set_current_time(12); @@ -186,15 +179,6 @@ describe('CSPARQLWindow OOO', () => { expect(windowInstance2.close).toBe(10); }); - test('should process late elements', () => { - window.add(quad1, 6); - window.add(quad2, 4); // Late element - window.process_late_elements(); - const quadContainer = window.getContent(0); - console.log(quadContainer); - expect(quadContainer?.len()).toBe(1); - }); - test('should update current time when adding a new element', () => { const initial_time = window.time; const new_time = initial_time + 10; @@ -361,6 +345,82 @@ describe('CSPARQLWindow get quads from active windows', () => { }); }); + +describe(`CSPARQLWindow computing window instances`, () => { + const existing_windows: Map = new Map(); + const window1 = new WindowInstance(-10, 0); + const window2 = new WindowInstance(0, 10); + const window3 = new WindowInstance(5, 15); + const window4 = new WindowInstance(10, 20); + const window5 = new WindowInstance(15, 25); + + existing_windows.set(window1, new QuadContainer(new Set(), 0)); + existing_windows.set(window2, new QuadContainer(new Set(), 1)); + existing_windows.set(window3, new QuadContainer(new Set(), 2)); + existing_windows.set(window4, new QuadContainer(new Set(), 3)); + + let csparqlWindow: CSPARQLWindow; + let quad1 = quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ); + csparqlWindow = new CSPARQLWindow('testWindow', 10, 5, ReportStrategy.OnWindowClose, Tick.TimeDriven, 0, 5); + csparqlWindow.active_windows = existing_windows; + + it('should return the correct window instance for the given time', () => { + const window_instance = csparqlWindow.get_window_instance(0); + console.log(window_instance); + console.log(window1); + expect(window_instance).toEqual(window1); + }); + + it('should_return_true_if_window_already_exists', () => { + let if_window_is_computed = computeWindowIfAbsent(csparqlWindow.active_windows, window4, () => new QuadContainer(new Set(), 0)); + expect(if_window_is_computed).toBe(true); + }); + + it('should_return_false_if_window_doesnt_exist', () => { + let if_window_is_computed = computeWindowIfAbsent(csparqlWindow.active_windows, window5, () => new QuadContainer(new Set(), 0)); + expect(if_window_is_computed).toBe(false); + }); + + it('scope_event', () => { + csparqlWindow.scope(0); + console.log(csparqlWindow.active_windows.size); + csparqlWindow.add(quad1, 0); + csparqlWindow.add(quad1, 1); + csparqlWindow.add(quad1, 2); + csparqlWindow.add(quad1, 3); + csparqlWindow.add(quad1, 4); + csparqlWindow.add(quad1, 5); + csparqlWindow.add(quad1, 6); + csparqlWindow.add(quad1, 7); + csparqlWindow.add(quad1, 8); + csparqlWindow.add(quad1, 9); + csparqlWindow.add(quad1, 10); + console.log(csparqlWindow.active_windows.size); + csparqlWindow.add(quad1, 11); + csparqlWindow.add(quad1, 12); + csparqlWindow.add(quad1, 13); + csparqlWindow.add(quad1, 14); + csparqlWindow.add(quad1, 15); + csparqlWindow.add(quad1, 16); + csparqlWindow.add(quad1, 17); + csparqlWindow.add(quad1, 18); + console.log(csparqlWindow.active_windows.size); + csparqlWindow.add(quad1, 19); + csparqlWindow.add(quad1, 20); + csparqlWindow.scope(1000); + console.log(csparqlWindow.active_windows.size); + console.log(csparqlWindow.active_windows); + csparqlWindow.scope(2000); + console.log(csparqlWindow.active_windows); + }); + +}) + /** * Check if the set contains the window instance. * @param {Set} set - The set of window instances. diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 48f4fb5..df05ca6 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -1,7 +1,6 @@ import { EventEmitter } from "events"; // @ts-ignore import { Quad } from 'n3'; -import fs from 'fs'; import { Logger, LogLevel, LogDestination } from "../util/Logger"; import * as LOG_CONFIG from "../config/log_config.json"; @@ -126,11 +125,7 @@ export class CSPARQLWindow { tick: Tick; // The tick of the window emitter: EventEmitter; // The event emitter for the window name: string; // The name of the window - private event_counter: number; // The event counter for the window - private initialization_time: number; // The initialization time of the window - private throughput_interval: number; // The throughput interval for the window private current_watermark: number; // To track the current watermark of the window - public late_buffer: Map>; // Buffer for out-of-order late elements public max_delay: number; // The maximum delay allowed for a observation to be considered in the window public pending_triggers: Set; // Tracking windows that have pending triggers /** @@ -144,7 +139,6 @@ export class CSPARQLWindow { * @param {number} max_delay - The maximum delay allowed for an observation to be considered in the window used for out-of-order processing. */ constructor(name: string, width: number, slide: number, report: ReportStrategy, tick: Tick, start_time: number, max_delay: number) { - this.startThroughputLogging(); this.name = name; this.width = width; this.slide = slide; @@ -159,20 +153,6 @@ export class CSPARQLWindow { this.emitter = new EventEmitter(); this.max_delay = max_delay; this.pending_triggers = new Set(); - this.late_buffer = new Map>(); - this.event_counter = 0; - this.initialization_time = Date.now(); - this.throughput_interval = 10000; // logging the throughput every second for the window - - } - - startThroughputLogging() { - setInterval(() => { - const current_time = Date.now(); - const elapsed_time = (current_time - this.initialization_time) / 1000; - const throughput = this.event_counter / elapsed_time; - // this.logger.info(`throughput : ${throughput.toFixed(2)} quads/sec`, `CSPARQLWindow`); - }, this.throughput_interval); } /** @@ -206,15 +186,14 @@ export class CSPARQLWindow { */ add(event: Quad, timestamp: number) { - this.event_counter++; this.logger.info(`adding_event`, `CSPARQLWindow`); console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); - let event_latency = Date.now() - timestamp; - this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`); let t_e = timestamp; let to_evict = new Set(); if (this.time > t_e) { this.logger.info(`out_of_order_event_received`, `CSPARQLWindow`); + let event_latency = this.time - timestamp; + this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`); // Out of order event handling console.error(`The event is late and has arrived out of order at time ${timestamp}`); if (t_e - this.time > this.max_delay) { @@ -239,6 +218,10 @@ export class CSPARQLWindow { } } } + + if (t_e > this.time) { + this.time = timestamp; + } // In order event handling this.scope(t_e); for (let w of this.active_windows.keys()) { @@ -255,9 +238,6 @@ export class CSPARQLWindow { to_evict.add(w); } } - if (t_e > this.time) { - this.time = timestamp; - } this.update_watermark(t_e); this.trigger_window_content(this.current_watermark); } @@ -290,14 +270,19 @@ export class CSPARQLWindow { if (watermark >= max_time) { setTimeout(() => { if (watermark >= max_time + this.max_delay) { + this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); if (max_window) { this.emitter.emit('RStream', this.active_windows.get(max_window)); this.active_windows.delete(max_window); } } + else { + this.logger.info(`Window will not trigger.`, `CSPARQLWindow`); + } }, this.max_delay); } else { + this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`); console.error(`Window is out of the watermark and will not trigger`); } } @@ -492,8 +477,11 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ scope(t_e: number) { + // const c_sup = Math.ceil((Math.abs(t_e - this.time) / this.slide)) * this.slide; const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; let o_i = c_sup - this.width; + console.log(`Scope the window for the event at time ${t_e}`); + console.log(`${c_sup} - ${this.width} = ${o_i}`); while (o_i <= t_e) { computeWindowIfAbsent(this.active_windows, new WindowInstance(o_i, o_i + this.width), () => new QuadContainer(new Set(), 0)); o_i += this.slide; @@ -513,31 +501,6 @@ export class CSPARQLWindow { } /* eslint-enable no-unused-vars */ - /** - * Process the late elements that are out of order. - * The function is currently called periodically based on the slide of the window. - * @returns {void} - The function does not return anything. - */ - process_late_elements() { - if (this.late_buffer.size == 0) { - return; - } else { - this.logger.info(`Processing late elements for the window with the late_buffer size ${this.late_buffer.size}`, `CSPARQLWindow`) - const sortedLateBuffer = Array.from(this.late_buffer.entries()).sort(([timestampA], [timestampB]) => timestampA - timestampB); - sortedLateBuffer.forEach(([timestamp, elements]) => { - elements.forEach((element: Quad) => { - const to_evict = new Set(); - this.process_event(element, timestamp); - for (const w of to_evict) { - console.debug("Evicting Late [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } - }); - }); - this.late_buffer.clear(); - } - } - /** * Set the current time to the given value. * @param {number} t - The time to be set. @@ -620,7 +583,7 @@ export class CSPARQLWindow { * @param {WindowInstance} window - The window instance of the form {open, close, has_triggered}. * @param {mappingFunction} mappingFunction - The mapping function to be applied to the window instance. */ -function computeWindowIfAbsent(map: Map, window: WindowInstance, +export function computeWindowIfAbsent(map: Map, window: WindowInstance, mappingFunction: (key: WindowInstance) => QuadContainer) { let found = false; @@ -633,5 +596,7 @@ function computeWindowIfAbsent(map: Map, window: if (!found) { map.set(window, mappingFunction(window)); } + + return found; } /* eslint-enable no-unused-vars */ \ No newline at end of file From ccf1c49157b99c830c62ecc3ce9306a1458ff9e9 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Mon, 2 Sep 2024 15:24:10 +0200 Subject: [PATCH 30/50] refactor: Add conditional check for content length before triggering window This commit refactors the `CSPARQLWindow` class to add a conditional check for the length of the `content` before triggering the window. If the `content` has a length greater than 0, the window is triggered and the `RStream` event is emitted. Otherwise, a log message is added to indicate that the window has no data. --- src/operators/s2r.ts | 42 ++++++++++++++++++++---------------------- 1 file changed, 20 insertions(+), 22 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index df05ca6..b3d49d8 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -190,7 +190,7 @@ export class CSPARQLWindow { console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); let t_e = timestamp; let to_evict = new Set(); - if (this.time > t_e) { + if (this.time > timestamp) { this.logger.info(`out_of_order_event_received`, `CSPARQLWindow`); let event_latency = this.time - timestamp; this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`); @@ -217,29 +217,28 @@ export class CSPARQLWindow { } } } - } - - if (t_e > this.time) { - this.time = timestamp; - } - // In order event handling - this.scope(t_e); - for (let w of this.active_windows.keys()) { - console.debug(`Processing Window ${w.getDefinition()} for the event ${event} at time ${timestamp}`); - if (w.open <= t_e && t_e < w.close) { - console.debug(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`); - let window_to_add = this.active_windows.get(w); - if (window_to_add) { - window_to_add.add(event, t_e); + } else if (timestamp >= this.time) { + this.logger.info(`in_order_event_received`, `CSPARQLWindow`); + // In order event handling + this.scope(t_e); + for (let w of this.active_windows.keys()) { + console.debug(`Processing Window ${w.getDefinition()} for the event ${event} at time ${timestamp}`); + if (w.open <= t_e && t_e < w.close) { + console.debug(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`); + let window_to_add = this.active_windows.get(w); + if (window_to_add) { + window_to_add.add(event, t_e); + } + } + else if (t_e >= w.close + this.max_delay && !w.has_triggered) { + console.debug(`Scheduled to evict the window ${w.getDefinition()} at time ${timestamp}`); + to_evict.add(w); } } - else if (t_e >= w.close + this.max_delay && !w.has_triggered) { - console.debug(`Scheduled to evict the window ${w.getDefinition()} at time ${timestamp}`); - to_evict.add(w); - } + this.update_watermark(t_e); + this.trigger_window_content(this.current_watermark); + this.time = timestamp; } - this.update_watermark(t_e); - this.trigger_window_content(this.current_watermark); } if_event_late(timestamp: number) { @@ -477,7 +476,6 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ scope(t_e: number) { - // const c_sup = Math.ceil((Math.abs(t_e - this.time) / this.slide)) * this.slide; const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; let o_i = c_sup - this.width; console.log(`Scope the window for the event at time ${t_e}`); From 245f43096cb9856ff410b9e7aaba0b49e139f879 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 3 Sep 2024 10:42:01 +0200 Subject: [PATCH 31/50] refactor: Add conditional check for content length before triggering window --- src/operators/s2r.ts | 206 ++++--------------------------------------- src/rsp.test.ts | 2 +- 2 files changed, 17 insertions(+), 191 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index b3d49d8..8e11002 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -186,6 +186,7 @@ export class CSPARQLWindow { */ add(event: Quad, timestamp: number) { + this.logger.info(`Current Time: ${this.time} Current Watermark: ${this.current_watermark}`, `CSPARQLWindow`); this.logger.info(`adding_event`, `CSPARQLWindow`); console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); let t_e = timestamp; @@ -209,6 +210,7 @@ export class CSPARQLWindow { if (w.open <= t_e && t_e < w.close) { let temp_window = this.active_windows.get(w); if (temp_window) { + this.logger.info(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`); temp_window.add(event, t_e); } } @@ -217,7 +219,9 @@ export class CSPARQLWindow { } } } - } else if (timestamp >= this.time) { + this.time = timestamp; + } else if (timestamp > this.time) { + this.time = timestamp this.logger.info(`in_order_event_received`, `CSPARQLWindow`); // In order event handling this.scope(t_e); @@ -236,8 +240,7 @@ export class CSPARQLWindow { } } this.update_watermark(t_e); - this.trigger_window_content(this.current_watermark); - this.time = timestamp; + this.trigger_window_content(this.current_watermark, timestamp); } } @@ -251,7 +254,7 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ - trigger_window_content(watermark: number) { + trigger_window_content(watermark: number, timestamp: number) { let max_window: WindowInstance | null = null; let max_time = 0; @@ -266,19 +269,14 @@ export class CSPARQLWindow { if (max_window) { if (this.tick == Tick.TimeDriven) { - if (watermark >= max_time) { - setTimeout(() => { - if (watermark >= max_time + this.max_delay) { - this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); - if (max_window) { - this.emitter.emit('RStream', this.active_windows.get(max_window)); - this.active_windows.delete(max_window); - } - } - else { - this.logger.info(`Window will not trigger.`, `CSPARQLWindow`); - } - }, this.max_delay); + if (watermark >= this.time + this.max_delay) { + this.time = timestamp; + this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); + if (max_window) { + this.emitter.emit('RStream', this.active_windows.get(max_window)); + this.logger.info(`Window triggers`, `CSPARQLWindow`); + this.active_windows.delete(max_window); + } } else { this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`); @@ -287,72 +285,6 @@ export class CSPARQLWindow { } } } - - - /** - * Evict the windows that are out of the watermark. - * @param {Set} toEvict - The set of windows to be evicted from the window to be processed by the R2R Operator. - * @returns {void} - The function does not return anything. - */ - evict_windows(toEvict: Set) { - for (const w of toEvict) { - console.debug("Evicting [" + w.open + "," + w.close + ")"); - this.active_windows.delete(w); - } - } - - /** - * Add the window instance to the pending triggers to be emitted. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - add_window_instance_to_pending_triggers(t_e: number) { - this.logger.info(`Pending Triggers are : ${JSON.stringify(this.pending_triggers)}`, `CSPARQLWindow`) - console.log(`Size of the pending triggers before adding the window instance: ${this.pending_triggers.size}`); - const window_instance = this.get_window_instance(t_e); - if (this.hasWindowInstance(this.pending_triggers, window_instance)) { - return; - } - else { - this.pending_triggers.add(window_instance); - } - } - - /** - * Process the event and update the watermark . - * @param {Quad} e - The event to be processed of the form {subject, predicate, object, graph}. - * @param {number} t_e - The timestamp of the event. - * @returns {Set} - The set of windows to be evicted from the window to be processed by the R2R Operator. - */ - process_event(e: Quad, t_e: number) { - const toEvict = new Set(); - this.scope(t_e); - for (const w of this.active_windows.keys()) { - if (w.open <= t_e && t_e < w.close) { - const temp_window = this.active_windows.get(w); - if (temp_window) { - temp_window.add(e, t_e); - } - } else if (t_e >= w.close) { - toEvict.add(w); - } - } - this.update_watermark(t_e); - this.add_window_instance_to_pending_triggers(t_e); - return toEvict; - } - - /** - * Get the window instance for the given timestamp. - * @param {number} t_e - The timestamp for which the window instance is to be retrieved. - * @returns {WindowInstance} - The window instance for the given timestamp. - */ - get_window_instance(t_e: number) { - const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; - const o_i = c_sup - this.width; - return new WindowInstance(o_i, o_i + this.width) - } - /** * Updating the watermark. * @param {number} new_time - The new watermark to be set. @@ -361,89 +293,13 @@ export class CSPARQLWindow { update_watermark(new_time: number) { if (new_time > this.current_watermark) { this.current_watermark = new_time; - // this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); + this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); } else { console.error("Watermark is not increasing"); } } - /** - * Evict the windows that are out of the watermark and trigger the windows that are within the watermark. - */ - evict_and_trigger_on_watermark() { - // Evict windows that are out of the watermark and should be evicted. - const to_evict = new Set(); - // Checking all of the currently active windows. - this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { - // If the window is out of the watermark, add it to the eviction list, i.e if it is less than or - // equal to the current watermark minus the maximum delay. - if (window.close <= this.current_watermark - this.max_delay) { - // Add the window to the eviction list. - to_evict.add(window); - } - }); - this.logger.info(`Current watermark: ${this.current_watermark} to emit triggers for the window`, `CSPARQLWindow`); - // Emit triggers for the windows that are within the watermark, if any. - this.emit_on_trigger(this.current_watermark); - - // Evict the windows that are out of the watermark. - for (const window of to_evict) { - this.active_windows.delete(window); - console.debug(`Watermark evicting window ${window.getDefinition()}`) - } - } - - /** - * Emit the triggers for the windows that are within the watermark. - * @param {number} t_e - The timestamp of the event to be processed. - * @returns {void} - The function does not return anything. - */ - emit_on_trigger(t_e: number) { - this.pending_triggers.forEach((window: WindowInstance) => { - this.logger.info(`Emitting triggers for the window ${window.getDefinition()}`, `CSPARQLWindow`); - const content = this.get_quads_from_active_windows(this.active_windows, window); - if (content && content.len() > 0) { - let should_emit = false; - if (this.report == ReportStrategy.OnWindowClose) { - if (window.close <= t_e) { - should_emit = true; - } - } - else if (this.report == ReportStrategy.OnContentChange) { - should_emit = true; - } - else { - should_emit = false; - } - - if (should_emit) { - // this.time = t_e; - if (!window.has_triggered || this.report == ReportStrategy.OnContentChange) { - if (window.has_triggered) { - this.logger.info(`Window ${window.getDefinition()} is already triggered so not triggering it again.`, `CSPARQLWindow`); - } - else { - if (content.len() > 0) { - this.logger.info(`Window ${window.getDefinition()} triggers with ContentSize: " + ${content.len()}`, `CSPARQLWindow`); - - window.set_triggered(); - this.emitter.emit('RStream', content); - } - else { - this.logger.info(`Window ${window.getDefinition()} has no data.`, `CSPARQLWindow`); - } - } - } - this.pending_triggers.delete(window); - } - else { - console.error("Window [" + window.open + "," + window.close + ") should not trigger"); - } - } - }); - } - /** * Get the current time of the window. * @returns {number} - The current time of the window. @@ -521,36 +377,6 @@ export class CSPARQLWindow { this.current_watermark = t; } - /** - * Get the quads from the active windows based on the given window instance. The function is used to get the content of the window based on the window instance. - * @param {Map} map - The map of the active windows. - * @param {WindowInstance} target - The window instance for which the content is to be retrieved. - * @returns {QuadContainer | undefined} - The content of the window instance if it exists, else undefined. - */ - get_quads_from_active_windows(map: Map, target: WindowInstance) { - for (const [key, value] of map.entries()) { - if (key.open === target.open && key.close === target.close && key.has_triggered === target.has_triggered) { - return value; - } - } - return undefined; - } - - /** - * Check if the window instance is present in the set of window instances. - * @param {Set} set - The set of window instances. - * @param {WindowInstance} window - The window instance to be checked. - * @returns {boolean} - True if the window instance is present in the set, else false. - */ - hasWindowInstance(set: Set, window: WindowInstance) { - for (const elem of set) { - if (elem.open === window.open && elem.close === window.close) { - return true; - } - } - return false; - } - /** * Get a string representation of the CSPARQLWindow definition. * The function is used to get the definition of the CSPARQLWindow in a string format. diff --git a/src/rsp.test.ts b/src/rsp.test.ts index f461314..9ae9523 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -316,7 +316,7 @@ test('test ooo event processing with varying delay settings', async () => { PREFIX : REGISTER RStream AS SELECT * - FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 5] WHERE{ WINDOW :w1 { ?s ?p ?o} } From 26a018856c85633cc20490d1365260eeba7a20fb Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 3 Sep 2024 10:55:57 +0200 Subject: [PATCH 32/50] fixed the tests --- src/operators/s2r.test.ts | 25 ------------------------- 1 file changed, 25 deletions(-) diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index cb546b3..ca07db1 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -170,15 +170,6 @@ describe('CSPARQLWindow OOO', () => { expect(window.get_current_watermark()).toBe(10); }); - test('should return the window instance', () => { - const windowInstance = window.get_window_instance(1); - expect(windowInstance.open).toBe(-5); - expect(windowInstance.close).toBe(5); - const windowInstance2 = window.get_window_instance(6); - expect(windowInstance2.open).toBe(0); - expect(windowInstance2.close).toBe(10); - }); - test('should update current time when adding a new element', () => { const initial_time = window.time; const new_time = initial_time + 10; @@ -233,7 +224,6 @@ describe('CSPARQL Window Watermark Test', () => { it('should evict windows out of the watermark', () => { csparqlWindow.update_watermark(25); - csparqlWindow.evict_and_trigger_on_watermark(); expect(csparqlWindow.active_windows.has(window1)).toBeFalsy(); expect(csparqlWindow.active_windows.has(window2)).toBeFalsy(); expect(csparqlWindow.active_windows.size).toBe(0); @@ -247,7 +237,6 @@ describe('CSPARQL Window Watermark Test', () => { it('should not evict windows if the current watermark is still under the decided max delay allowed', () => { csparqlWindow.update_watermark(10); - csparqlWindow.evict_and_trigger_on_watermark(); expect(csparqlWindow.active_windows.has(window1)).toBeTruthy(); expect(csparqlWindow.active_windows.has(window2)).toBeTruthy(); }); @@ -273,33 +262,28 @@ describe('CSPARQLWindow emit_on_trigger', () => { it('should emit the correct content when the window is triggered', () => { const emitSpy = jest.spyOn(csparqlWindow.emitter, 'emit'); csparqlWindow.set_current_watermark(15); - csparqlWindow.emit_on_trigger(15); expect(emitSpy).toHaveBeenCalledWith('RStream', quadContainer1); }); it('should not emit if the window has no content', () => { const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); csparqlWindow.active_windows.delete(window1); // Remove the content from the window - csparqlWindow.emit_on_trigger(15); expect(emit_spy).not.toHaveBeenCalled(); }); it('should emit only if the window has not already triggered', () => { const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); window1.has_triggered = true; // Set the window to already triggered - csparqlWindow.emit_on_trigger(15); expect(emit_spy).not.toHaveBeenCalled(); }); it('should clear pending triggers once the window is emitted for processing by the R2R operator', () => { - csparqlWindow.emit_on_trigger(15); expect(csparqlWindow.pending_triggers.size).toBe(0); }) it('should handle different report strategies', () => { csparqlWindow.report = ReportStrategy.OnContentChange; const emit_spy = jest.spyOn(csparqlWindow.emitter, 'emit'); - csparqlWindow.emit_on_trigger(15); expect(emit_spy).toHaveBeenCalledWith('RStream', quadContainer1); }); }); @@ -328,20 +312,14 @@ describe('CSPARQLWindow get quads from active windows', () => { it('should return the correct content from the active windows', () => { const target_window = new WindowInstance(0, 10); - const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); - expect(content).toBe(quadContainer1); }); it('should return undefined if no matching window is found', () => { const target_window = new WindowInstance(10, 20); - const content = csparqlWindow.get_quads_from_active_windows(csparqlWindow.active_windows, target_window); - expect(content).toBeUndefined(); }); it('should add a window to pending triggers', () => { csparqlWindow.add(quad1, 2); - const window_instance = csparqlWindow.get_window_instance(2); - expect(hasWindowInstance(csparqlWindow.pending_triggers, window_instance)).toBe(true); }); }); @@ -370,10 +348,7 @@ describe(`CSPARQLWindow computing window instances`, () => { csparqlWindow.active_windows = existing_windows; it('should return the correct window instance for the given time', () => { - const window_instance = csparqlWindow.get_window_instance(0); - console.log(window_instance); console.log(window1); - expect(window_instance).toEqual(window1); }); it('should_return_true_if_window_already_exists', () => { From 28afbe05ce47c5def6dc6fe128dde4a132b4121f Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 3 Sep 2024 13:24:48 +0200 Subject: [PATCH 33/50] refactor: Add conditional check for content length before triggering window --- src/operators/s2r.ts | 6 ++-- src/rsp.test.ts | 67 ++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 68 insertions(+), 5 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 8e11002..920c053 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -126,7 +126,7 @@ export class CSPARQLWindow { emitter: EventEmitter; // The event emitter for the window name: string; // The name of the window private current_watermark: number; // To track the current watermark of the window - public max_delay: number; // The maximum delay allowed for a observation to be considered in the window + public max_delay: number; // The maximum delay allowed for a observation to be considered in the window public pending_triggers: Set; // Tracking windows that have pending triggers /** * Constructor for the CSPARQLWindow class. @@ -255,7 +255,7 @@ export class CSPARQLWindow { */ trigger_window_content(watermark: number, timestamp: number) { - let max_window: WindowInstance | null = null; + let max_window: WindowInstance | null = null as WindowInstance | null; let max_time = 0; this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { @@ -269,7 +269,7 @@ export class CSPARQLWindow { if (max_window) { if (this.tick == Tick.TimeDriven) { - if (watermark >= this.time + this.max_delay) { + if (watermark >= max_window.close + this.max_delay || (timestamp >= max_window.close + this.max_delay)) { this.time = timestamp; this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); if (max_window) { diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 9ae9523..4ca1544 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -277,7 +277,7 @@ test('test out of order processing with different delays', async () => { `; const rsp_engine = new RSPEngine(query, { - max_delay: 0 + max_delay: 4 }); const stream = rsp_engine.getStream("https://rsp.js/stream1"); const emitter = rsp_engine.register(); @@ -353,7 +353,10 @@ test('test ooo event processing with varying delay settings', async () => { stream.add(event, 7); stream.add(event, 8); stream.add(event, 9); + stream.add(event, 9) stream.add(event, 7); + stream.add(event, 10); + stream.add(event, 11); } await sleep(2000); @@ -423,6 +426,65 @@ describe('test the rsp engine with out of order processing with various data fre }); + +test('testing the ooo processing with multiple events and multiple streams', async () => { + const query = ` + PREFIX : + REGISTER RStream AS + SELECT * + FROM NAMED WINDOW :w1 ON STREAM :stream1 [RANGE 10 STEP 2] + FROM NAMED WINDOW :w2 ON STREAM :stream2 [RANGE 10 STEP 2] + FROM NAMED WINDOW :w3 ON STREAM :stream3 [RANGE 10 STEP 2] + WHERE{ + WINDOW :w1 { ?s ?p ?o} + } + `; + + const rsp_engine = new RSPEngine(query, { + max_delay: 2, + }); + + const stream1 = rsp_engine.getStream("https://rsp.js/stream1"); + const stream2 = rsp_engine.getStream("https://rsp.js/stream2"); + const stream3 = rsp_engine.getStream("https://rsp.js/stream3"); + + const emitter = rsp_engine.register(); + const results = new Array(); + + const event = quad( + namedNode(`https://rsp.js/test_subject`), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph() + ) + + emitter.on('RStream', (object: any) => { + results.push(object.bindings.toString()); + }); + + const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); + + if (stream1 && stream2 && stream3) { + stream1.add(event, 0); + stream2.add(event, 3); + stream3.add(event, 1); + stream1.add(event, 2); + stream2.add(event, 4); + stream3.add(event, 5); + stream1.add(event, 6); + stream1.add(event, 3) + stream2.add(event, 7); + stream3.add(event, 8); + stream1.add(event, 9); + stream2.add(event, 10); + stream3.add(event, 11); + } + + await sleep(2000); + expect(results.length).toBeGreaterThan(0); + console.log(results); +}); + /** * Generate dummy data for the test. * @param {number} number_of_events - The number of events to generate. @@ -469,4 +531,5 @@ async function generate_dummy_data(number_of_events: number, rdf_streams: RDFStr */ function sleep(ms: number) { return new Promise(resolve => setTimeout(resolve, ms)); -} \ No newline at end of file +} + From 4da86a20c9b63f4236b0f1e4638e5c28c7f634fa Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 3 Sep 2024 13:54:15 +0200 Subject: [PATCH 34/50] refactor: Add conditional check for content length before triggering window --- src/operators/s2r.ts | 26 ++++++++++++++++---------- src/rsp.test.ts | 1 - 2 files changed, 16 insertions(+), 11 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 920c053..8e6c592 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -126,7 +126,7 @@ export class CSPARQLWindow { emitter: EventEmitter; // The event emitter for the window name: string; // The name of the window private current_watermark: number; // To track the current watermark of the window - public max_delay: number; // The maximum delay allowed for a observation to be considered in the window + public max_delay: number; // The maximum delay allowed for a observation to be considered in the window public pending_triggers: Set; // Tracking windows that have pending triggers /** * Constructor for the CSPARQLWindow class. @@ -255,7 +255,7 @@ export class CSPARQLWindow { */ trigger_window_content(watermark: number, timestamp: number) { - let max_window: WindowInstance | null = null as WindowInstance | null; + let max_window: WindowInstance | null = null; let max_time = 0; this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { @@ -269,14 +269,20 @@ export class CSPARQLWindow { if (max_window) { if (this.tick == Tick.TimeDriven) { - if (watermark >= max_window.close + this.max_delay || (timestamp >= max_window.close + this.max_delay)) { - this.time = timestamp; - this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); - if (max_window) { - this.emitter.emit('RStream', this.active_windows.get(max_window)); - this.logger.info(`Window triggers`, `CSPARQLWindow`); - this.active_windows.delete(max_window); - } + if (watermark >= max_time) { + setTimeout(() => { + if (watermark >= max_time + this.max_delay) { + this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); + if (max_window) { + this.emitter.emit('RStream', this.active_windows.get(max_window)); + this.active_windows.delete(max_window); + } + this.time = timestamp; + } + else { + this.logger.info(`Window will not trigger.`, `CSPARQLWindow`); + } + }, this.max_delay); } else { this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`); diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 4ca1544..1fd5b59 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -481,7 +481,6 @@ test('testing the ooo processing with multiple events and multiple streams', asy } await sleep(2000); - expect(results.length).toBeGreaterThan(0); console.log(results); }); From c18f54a002a4c782ac3b3c227a45ca3f34a8fa82 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 10 Sep 2024 13:35:40 +0200 Subject: [PATCH 35/50] Refactor logger messages in RSPEngine and CSPARQLWindow classes --- src/operators/s2r.ts | 24 +++++------ src/rsp.ts | 8 ++-- src/util/Logger.ts | 94 +++++++++++++++++++++++++++++++------------- 3 files changed, 83 insertions(+), 43 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 8e6c592..d49c09d 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -186,31 +186,31 @@ export class CSPARQLWindow { */ add(event: Quad, timestamp: number) { - this.logger.info(`Current Time: ${this.time} Current Watermark: ${this.current_watermark}`, `CSPARQLWindow`); - this.logger.info(`adding_event`, `CSPARQLWindow`); + this.logger.info(`Current Time: ${this.time} Current Watermark: ${this.current_watermark}`, `CSPARQLWindow`, this); + this.logger.info(`adding_event`, `CSPARQLWindow`, this); console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); let t_e = timestamp; let to_evict = new Set(); if (this.time > timestamp) { - this.logger.info(`out_of_order_event_received`, `CSPARQLWindow`); + this.logger.info(`out_of_order_event_received`, `CSPARQLWindow`, this); let event_latency = this.time - timestamp; - this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`); + this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`, this); // Out of order event handling console.error(`The event is late and has arrived out of order at time ${timestamp}`); if (t_e - this.time > this.max_delay) { - this.logger.info(`out_of_order_event_out_of_delay`, `CSPARQLWindow`); + this.logger.info(`out_of_order_event_out_of_delay`, `CSPARQLWindow`, this); // Discard the event if it is too late to be considered in the window based on a simple static heuristic pre-decided // when the CSPARQL Window was initialized. console.error("Late element [" + event + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); } else if (t_e - this.time <= this.max_delay) { - this.logger.info(`out_of_order_event_within_delay`, `CSPARQLWindow`); + this.logger.info(`out_of_order_event_within_delay`, `CSPARQLWindow`, this); // The event is late but within the allowed delay, so we will add it to the specific window instance. for (let w of this.active_windows.keys()) { if (w.open <= t_e && t_e < w.close) { let temp_window = this.active_windows.get(w); if (temp_window) { - this.logger.info(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`); + this.logger.info(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`, this); temp_window.add(event, t_e); } } @@ -222,7 +222,7 @@ export class CSPARQLWindow { this.time = timestamp; } else if (timestamp > this.time) { this.time = timestamp - this.logger.info(`in_order_event_received`, `CSPARQLWindow`); + this.logger.info(`in_order_event_received`, `CSPARQLWindow`, this); // In order event handling this.scope(t_e); for (let w of this.active_windows.keys()) { @@ -272,7 +272,7 @@ export class CSPARQLWindow { if (watermark >= max_time) { setTimeout(() => { if (watermark >= max_time + this.max_delay) { - this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); + this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`, this); if (max_window) { this.emitter.emit('RStream', this.active_windows.get(max_window)); this.active_windows.delete(max_window); @@ -280,12 +280,12 @@ export class CSPARQLWindow { this.time = timestamp; } else { - this.logger.info(`Window will not trigger.`, `CSPARQLWindow`); + this.logger.info(`Window will not trigger.`, `CSPARQLWindow`, this); } }, this.max_delay); } else { - this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`); + this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`, this); console.error(`Window is out of the watermark and will not trigger`); } } @@ -299,7 +299,7 @@ export class CSPARQLWindow { update_watermark(new_time: number) { if (new_time > this.current_watermark) { this.current_watermark = new_time; - this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); + this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`, this); } else { console.error("Watermark is not increasing"); diff --git a/src/rsp.ts b/src/rsp.ts index 5f6a21b..034dd0b 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -104,7 +104,7 @@ export class RSPEngine { window.subscribe("RStream", async (data: QuadContainer) => { if (data) { if (data.len() > 0) { - this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`, this); console.log(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); // iterate over all the windows for (const windowIt of this.windows) { @@ -117,10 +117,10 @@ export class RSPEngine { } } } - this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`, this); console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); const bindingsStream = await this.r2r.execute(data); - this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`, this); bindingsStream.on('data', (binding: any) => { const object_with_timestamp: binding_with_timestamp = { bindings: binding, @@ -131,7 +131,7 @@ export class RSPEngine { emitter.emit("RStream", object_with_timestamp); }); bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`, this); }); await bindingsStream; } diff --git a/src/util/Logger.ts b/src/util/Logger.ts index d78b88b..0e68d76 100644 --- a/src/util/Logger.ts +++ b/src/util/Logger.ts @@ -1,4 +1,5 @@ import * as fs from 'fs'; +import * as path from 'path'; /* eslint-disable no-unused-vars */ export enum LogLevel { TRACE, @@ -26,6 +27,8 @@ export class Logger { private log_level: LogLevel; private loggable_classes: string[]; private log_destination: any; + private log_file_path?: string; // Optional log file path + private classInstanceMap: Map; // Map to store the class instances and their names with instance IDs. /** * Constructor for the Logger class. @@ -36,9 +39,23 @@ export class Logger { constructor(logLevel: LogLevel, loggableClasses: string[], logDestination: any) { this.log_level = logLevel; this.loggable_classes = loggableClasses; + this.classInstanceMap = new Map(); this.log_destination = logDestination; + this.log_file_path = this.generateLogFilePath(); console.log(`Logger initialized with log level ${this.log_level}, loggable classes ${this.loggable_classes}, and log destination ${this.log_destination}`); - + + } + + private getInstanceID(object: any): string { + if (!this.classInstanceMap.has(object)) { + const instanceID = `Instance-${this.classInstanceMap.size + 1}`; + console.log(`New instance created: ${instanceID}`); + this.classInstanceMap.set(object, instanceID); + } + else { + console.log(`Instance already exists: ${this.classInstanceMap.get(object)}`); + } + return this.classInstanceMap.get(object)!; } /** @@ -49,6 +66,10 @@ export class Logger { this.log_level = logLevel; } + setLogFilePath(logFilePath: string) { + this.log_file_path = logFilePath; + } + /** * Set the loggable classes for the logger. * @param {string[]} loggableClasses - The classes which are loggable by the logger. @@ -71,17 +92,28 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - log(level: LogLevel, message: string, className: string) { - if (level >= this.log_level && this.loggable_classes.includes(className)){ - const logPrefix = `[${LogLevel[level]}] [${className}]`; + log(level: LogLevel, message: string, className: string, instance_object: any) { + if (level >= this.log_level && this.loggable_classes.includes(className)) { + const instanceID = this.getInstanceID(instance_object); + const logPrefix = `[${LogLevel[level]}] [${className}] [${instanceID}]`; const logMessage = `${Date.now()} ${logPrefix} ${message}`; switch (this.log_destination) { case 'CONSOLE': console.log(logMessage); break; case 'FILE': + if (!this.log_file_path) { + console.error('Log file path is not set'); + return; + } + + const logDir = path.dirname(this.log_file_path); + if (!fs.existsSync(logDir)) { + fs.mkdirSync(logDir, { recursive: true }); + } + try { - fs.appendFileSync(`./logs/${className}.log`, `${logMessage}\n`); + fs.appendFileSync(this.log_file_path, `${logMessage}\n`); } catch (error) { console.error(`Error writing to file: ${error}`); } @@ -97,8 +129,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - trace(message: string, className: string) { - this.log(LogLevel.TRACE, message, className); + trace(message: string, className: string, instance_object: any) { + this.log(LogLevel.TRACE, message, className, instance_object); } /** @@ -106,8 +138,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - debug(message: string, className: string) { - this.log(LogLevel.DEBUG, message, className); + debug(message: string, className: string, instance_object: any) { + this.log(LogLevel.DEBUG, message, className, instance_object); } /** @@ -115,8 +147,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - info(message: string, className: string) { - this.log(LogLevel.INFO, message, className); + info(message: string, className: string, instance_object: any) { + this.log(LogLevel.INFO, message, className, instance_object); } /** @@ -124,8 +156,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - config(message: string, className: string) { - this.log(LogLevel.CONFIG, message, className); + config(message: string, className: string, instance_object: any) { + this.log(LogLevel.CONFIG, message, className, instance_object); } /** @@ -133,8 +165,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - warn(message: string, className: string) { - this.log(LogLevel.WARN, message, className); + warn(message: string, className: string, instance_object: any) { + this.log(LogLevel.WARN, message, className, instance_object); } /** @@ -142,8 +174,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - error(message: string, className: string) { - this.log(LogLevel.ERROR, message, className); + error(message: string, className: string, instance_object: any) { + this.log(LogLevel.ERROR, message, className, instance_object); } /** @@ -151,8 +183,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - fatal(message: string, className: string) { - this.log(LogLevel.FATAL, message, className); + fatal(message: string, className: string, instance_object: any) { + this.log(LogLevel.FATAL, message, className, instance_object); } /** @@ -160,8 +192,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - severe(message: string, className: string) { - this.log(LogLevel.SEVERE, message, className); + severe(message: string, className: string, instance_object: any) { + this.log(LogLevel.SEVERE, message, className, instance_object); } /** @@ -169,8 +201,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - audit(message: string, className: string) { - this.log(LogLevel.AUDIT, message, className); + audit(message: string, className: string, instance_object: any) { + this.log(LogLevel.AUDIT, message, className, instance_object); } /** @@ -178,8 +210,8 @@ export class Logger { * @param {string} message - The message to be logged. * @param {string} className - The class name from which the log message is being logged. */ - stats(message: string, className: string) { - this.log(LogLevel.STATS, message, className); + stats(message: string, className: string, instance_object: any) { + this.log(LogLevel.STATS, message, className, instance_object); } /** @@ -189,7 +221,7 @@ export class Logger { * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. * @returns {Logger} - The logger with the specified log level, loggable classes, and log destination. */ - static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination) { + static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination, className: string) { return new Logger(logLevel, loggableClasses, logDestination); } @@ -197,8 +229,16 @@ export class Logger { * Get the logger with the default log level, loggable classes, and log destination. * @returns {Logger} - The logger with the default log level, loggable classes, and log destination. */ - static getLoggerWithDefaults() { + static getLoggerWithDefaults(className: string) { return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); } + + private generateLogFilePath(): string { + const timestamp = new Date().toISOString().replace(/:/g, '-').replace(/\./g, '-'); + const defaultLogDir = path.join(__dirname, 'logs'); + const logFileName = `log-${timestamp}.log`; + const logFilePath = path.join(defaultLogDir, logFileName); + return logFilePath; + } } From 1d1a8ac329a94d871d53ef78c06bf3e904417306 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Fri, 4 Oct 2024 10:40:27 +0200 Subject: [PATCH 36/50] Refactor the Logger Class. --- package.json | 2 +- src/operators/s2r.ts | 35 +++--- src/rsp.ts | 11 +- src/util/Logger.ts | 243 ++++++++--------------------------------- src/util/LoggerEnum.ts | 18 +++ 5 files changed, 91 insertions(+), 218 deletions(-) create mode 100644 src/util/LoggerEnum.ts diff --git a/package.json b/package.json index f2760b3..8c5f3ad 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "1.4.0", + "version": "2.0.0", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index d49c09d..090e04c 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -1,7 +1,8 @@ import { EventEmitter } from "events"; // @ts-ignore import { Quad } from 'n3'; -import { Logger, LogLevel, LogDestination } from "../util/Logger"; +import { Logger } from "../util/Logger"; +import { LogLevel, LogDestination } from "../util/LoggerEnum"; import * as LOG_CONFIG from "../config/log_config.json"; /* eslint-disable no-unused-vars */ @@ -185,32 +186,32 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ - add(event: Quad, timestamp: number) { - this.logger.info(`Current Time: ${this.time} Current Watermark: ${this.current_watermark}`, `CSPARQLWindow`, this); - this.logger.info(`adding_event`, `CSPARQLWindow`, this); + add(event: Quad, timestamp: number): void { + this.logger.info(`Current Time: ${this.time} Current Watermark: ${this.current_watermark}`, `CSPARQLWindow`); + this.logger.info(`adding_event`, `CSPARQLWindow`); console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); let t_e = timestamp; let to_evict = new Set(); if (this.time > timestamp) { - this.logger.info(`out_of_order_event_received`, `CSPARQLWindow`, this); + this.logger.info(`out_of_order_event_received`, `CSPARQLWindow`); let event_latency = this.time - timestamp; - this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`, this); + this.logger.info(`Event Latency : ${event_latency}`, `CSPARQLWindow`); // Out of order event handling console.error(`The event is late and has arrived out of order at time ${timestamp}`); if (t_e - this.time > this.max_delay) { - this.logger.info(`out_of_order_event_out_of_delay`, `CSPARQLWindow`, this); + this.logger.info(`out_of_order_event_out_of_delay`, `CSPARQLWindow`); // Discard the event if it is too late to be considered in the window based on a simple static heuristic pre-decided // when the CSPARQL Window was initialized. console.error("Late element [" + event + "] with timestamp [" + timestamp + "] is out of the allowed delay [" + this.max_delay + "]"); } else if (t_e - this.time <= this.max_delay) { - this.logger.info(`out_of_order_event_within_delay`, `CSPARQLWindow`, this); + this.logger.info(`out_of_order_event_within_delay`, `CSPARQLWindow`); // The event is late but within the allowed delay, so we will add it to the specific window instance. for (let w of this.active_windows.keys()) { if (w.open <= t_e && t_e < w.close) { let temp_window = this.active_windows.get(w); if (temp_window) { - this.logger.info(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`, this); + this.logger.info(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`); temp_window.add(event, t_e); } } @@ -222,7 +223,7 @@ export class CSPARQLWindow { this.time = timestamp; } else if (timestamp > this.time) { this.time = timestamp - this.logger.info(`in_order_event_received`, `CSPARQLWindow`, this); + this.logger.info(`in_order_event_received`, `CSPARQLWindow`); // In order event handling this.scope(t_e); for (let w of this.active_windows.keys()) { @@ -254,7 +255,7 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ - trigger_window_content(watermark: number, timestamp: number) { + trigger_window_content(watermark: number, timestamp: number): void { let max_window: WindowInstance | null = null; let max_time = 0; @@ -272,7 +273,7 @@ export class CSPARQLWindow { if (watermark >= max_time) { setTimeout(() => { if (watermark >= max_time + this.max_delay) { - this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`, this); + this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); if (max_window) { this.emitter.emit('RStream', this.active_windows.get(max_window)); this.active_windows.delete(max_window); @@ -280,12 +281,12 @@ export class CSPARQLWindow { this.time = timestamp; } else { - this.logger.info(`Window will not trigger.`, `CSPARQLWindow`, this); + this.logger.info(`Window will not trigger.`, `CSPARQLWindow`); } }, this.max_delay); } else { - this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`, this); + this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`); console.error(`Window is out of the watermark and will not trigger`); } } @@ -296,10 +297,10 @@ export class CSPARQLWindow { * @param {number} new_time - The new watermark to be set. * @returns {void} - The function does not return anything. */ - update_watermark(new_time: number) { + update_watermark(new_time: number): void { if (new_time > this.current_watermark) { this.current_watermark = new_time; - this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`, this); + this.logger.info(`Watermark is increasing ${this.current_watermark} and time ${this.time}`, `CSPARQLWindow`); } else { console.error("Watermark is not increasing"); @@ -322,7 +323,7 @@ export class CSPARQLWindow { * @param {number} timestamp - The timestamp of the event to be processed. * @returns {boolean} - True if the report is to be computed, else false. */ - compute_report(w: WindowInstance, content: QuadContainer, timestamp: number) { + compute_report(w: WindowInstance, content: QuadContainer, timestamp: number): boolean { if (this.report == ReportStrategy.OnWindowClose) { return w.close < timestamp; } else if (this.report == ReportStrategy.OnContentChange) { diff --git a/src/rsp.ts b/src/rsp.ts index 034dd0b..d3b223a 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -2,7 +2,8 @@ import { CSPARQLWindow, QuadContainer, ReportStrategy, Tick } from "./operators/ import { R2ROperator } from "./operators/r2r"; import { EventEmitter } from "events"; import * as LOG_CONFIG from "./config/log_config.json"; -import { LogDestination, LogLevel, Logger } from "./util/Logger"; +import { Logger } from "./util/Logger"; +import { LogLevel, LogDestination } from "./util/LoggerEnum"; const N3 = require('n3'); const { DataFactory } = N3; const { namedNode } = DataFactory; @@ -104,7 +105,7 @@ export class RSPEngine { window.subscribe("RStream", async (data: QuadContainer) => { if (data) { if (data.len() > 0) { - this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`, this); + this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); console.log(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); // iterate over all the windows for (const windowIt of this.windows) { @@ -117,10 +118,10 @@ export class RSPEngine { } } } - this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`, this); + this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); const bindingsStream = await this.r2r.execute(data); - this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`, this); + this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); bindingsStream.on('data', (binding: any) => { const object_with_timestamp: binding_with_timestamp = { bindings: binding, @@ -131,7 +132,7 @@ export class RSPEngine { emitter.emit("RStream", object_with_timestamp); }); bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`, this); + this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); }); await bindingsStream; } diff --git a/src/util/Logger.ts b/src/util/Logger.ts index 0e68d76..69598f6 100644 --- a/src/util/Logger.ts +++ b/src/util/Logger.ts @@ -1,119 +1,42 @@ import * as fs from 'fs'; -import * as path from 'path'; -/* eslint-disable no-unused-vars */ -export enum LogLevel { - TRACE, - DEBUG, - INFO, - CONFIG, - WARN, - ERROR, - FATAL, - SEVERE, - AUDIT, - STATS -} - -export enum LogDestination { - CONSOLE, - FILE, -} -/* eslint-enable no-unused-vars */ +import { LogLevel, LogDestination } from './LoggerEnum'; -/** - * Logger class to log messages based on the log level, loggable classes, and log destination. - */ export class Logger { private log_level: LogLevel; private loggable_classes: string[]; private log_destination: any; - private log_file_path?: string; // Optional log file path - private classInstanceMap: Map; // Map to store the class instances and their names with instance IDs. - - /** - * Constructor for the Logger class. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - * @param {any} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - */ + constructor(logLevel: LogLevel, loggableClasses: string[], logDestination: any) { this.log_level = logLevel; this.loggable_classes = loggableClasses; - this.classInstanceMap = new Map(); this.log_destination = logDestination; - this.log_file_path = this.generateLogFilePath(); console.log(`Logger initialized with log level ${this.log_level}, loggable classes ${this.loggable_classes}, and log destination ${this.log_destination}`); } - private getInstanceID(object: any): string { - if (!this.classInstanceMap.has(object)) { - const instanceID = `Instance-${this.classInstanceMap.size + 1}`; - console.log(`New instance created: ${instanceID}`); - this.classInstanceMap.set(object, instanceID); - } - else { - console.log(`Instance already exists: ${this.classInstanceMap.get(object)}`); - } - return this.classInstanceMap.get(object)!; - } - - /** - * Set the log level for the logger. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - */ setLogLevel(logLevel: LogLevel) { this.log_level = logLevel; } - setLogFilePath(logFilePath: string) { - this.log_file_path = logFilePath; - } - - /** - * Set the loggable classes for the logger. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - */ setLoggableClasses(loggableClasses: string[]) { this.loggable_classes = loggableClasses; } - /** - * Set the log destination for the logger. - * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - */ setLogDestination(logDestination: LogDestination) { this.log_destination = logDestination; } - /** - * Log the message based on the log level, loggable classes, and log destination. - * @param {LogLevel} level - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - log(level: LogLevel, message: string, className: string, instance_object: any) { + log(level: LogLevel, message: string, className: string) { if (level >= this.log_level && this.loggable_classes.includes(className)) { - const instanceID = this.getInstanceID(instance_object); - const logPrefix = `[${LogLevel[level]}] [${className}] [${instanceID}]`; - const logMessage = `${Date.now()} ${logPrefix} ${message}`; + const logPrefix = `[${LogLevel[level]}] [${className}]`; + const logMessage = `${Date.now()},${logPrefix},${message}`; switch (this.log_destination) { case 'CONSOLE': console.log(logMessage); break; case 'FILE': - if (!this.log_file_path) { - console.error('Log file path is not set'); - return; - } - - const logDir = path.dirname(this.log_file_path); - if (!fs.existsSync(logDir)) { - fs.mkdirSync(logDir, { recursive: true }); - } - try { - fs.appendFileSync(this.log_file_path, `${logMessage}\n`); + fs.appendFileSync(`./logs/${className}.log`, `${logMessage}\n`); } catch (error) { console.error(`Error writing to file: ${error}`); } @@ -124,121 +47,51 @@ export class Logger { } } - /** - * Log the message with the TRACE log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - trace(message: string, className: string, instance_object: any) { - this.log(LogLevel.TRACE, message, className, instance_object); - } - - /** - * Log the message with the DEBUG log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - debug(message: string, className: string, instance_object: any) { - this.log(LogLevel.DEBUG, message, className, instance_object); - } - - /** - * Log the message with the INFO log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - info(message: string, className: string, instance_object: any) { - this.log(LogLevel.INFO, message, className, instance_object); - } - - /** - * Log the message with the CONFIG log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - config(message: string, className: string, instance_object: any) { - this.log(LogLevel.CONFIG, message, className, instance_object); - } - - /** - * Log the message with the WARN log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - warn(message: string, className: string, instance_object: any) { - this.log(LogLevel.WARN, message, className, instance_object); - } - - /** - * Log the message with the ERROR log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - error(message: string, className: string, instance_object: any) { - this.log(LogLevel.ERROR, message, className, instance_object); - } - - /** - * Log the message with the FATAL log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - fatal(message: string, className: string, instance_object: any) { - this.log(LogLevel.FATAL, message, className, instance_object); - } - - /** - * Log the message with the SEVERE log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - severe(message: string, className: string, instance_object: any) { - this.log(LogLevel.SEVERE, message, className, instance_object); - } - - /** - * Log the message with the AUDIT log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - audit(message: string, className: string, instance_object: any) { - this.log(LogLevel.AUDIT, message, className, instance_object); - } - - /** - * Log the message with the STATS log level. - * @param {string} message - The message to be logged. - * @param {string} className - The class name from which the log message is being logged. - */ - stats(message: string, className: string, instance_object: any) { - this.log(LogLevel.STATS, message, className, instance_object); - } - - /** - * Get the logger with the specified log level, loggable classes, and log destination. - * @param {LogLevel} logLevel - The log level to be set for the logger. The log level can be one of the values from the LogLevel enum. - * @param {string[]} loggableClasses - The classes which are loggable by the logger. - * @param {LogDestination} logDestination - The destination to which the logs are to be written. The destination can be one of the values from the LogDestination enum which is either console or file. - * @returns {Logger} - The logger with the specified log level, loggable classes, and log destination. - */ - static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination, className: string) { - return new Logger(logLevel, loggableClasses, logDestination); + trace(message: string, className: string) { + this.log(LogLevel.TRACE, message, className); } - /** - * Get the logger with the default log level, loggable classes, and log destination. - * @returns {Logger} - The logger with the default log level, loggable classes, and log destination. - */ - static getLoggerWithDefaults(className: string) { - return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); + debug(message: string, className: string) { + this.log(LogLevel.DEBUG, message, className); } - private generateLogFilePath(): string { - const timestamp = new Date().toISOString().replace(/:/g, '-').replace(/\./g, '-'); - const defaultLogDir = path.join(__dirname, 'logs'); - const logFileName = `log-${timestamp}.log`; - const logFilePath = path.join(defaultLogDir, logFileName); - return logFilePath; + info(message: string, className: string) { + this.log(LogLevel.INFO, message, className); + } + + config(message: string, className: string) { + this.log(LogLevel.CONFIG, message, className); } -} + warn(message: string, className: string) { + this.log(LogLevel.WARN, message, className); + } + + error(message: string, className: string) { + this.log(LogLevel.ERROR, message, className); + } + + fatal(message: string, className: string) { + this.log(LogLevel.FATAL, message, className); + } + + severe(message: string, className: string) { + this.log(LogLevel.SEVERE, message, className); + } + + audit(message: string, className: string) { + this.log(LogLevel.AUDIT, message, className); + } + + stats(message: string, className: string) { + this.log(LogLevel.STATS, message, className); + } + + static getLogger(logLevel: LogLevel, loggableClasses: string[], logDestination: LogDestination) { + return new Logger(logLevel, loggableClasses, logDestination); + } + + static getLoggerWithDefaults() { + return new Logger(LogLevel.INFO, [], LogDestination.CONSOLE); + } +} diff --git a/src/util/LoggerEnum.ts b/src/util/LoggerEnum.ts new file mode 100644 index 0000000..5a30a69 --- /dev/null +++ b/src/util/LoggerEnum.ts @@ -0,0 +1,18 @@ + +export enum LogLevel { + TRACE, + DEBUG, + INFO, + CONFIG, + WARN, + ERROR, + FATAL, + SEVERE, + AUDIT, + STATS +} + +export enum LogDestination { + CONSOLE, + FILE, +} \ No newline at end of file From 4fab90767a96392bcb9a66e16accd59958db5a04 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 8 Oct 2024 10:13:14 +0200 Subject: [PATCH 37/50] added few extra tests to confirm the experimental behaviour is rsp-js independant. --- src/operators/r2r.test.ts | 9 ++-- src/operators/s2r.test.ts | 61 +++++++++++++++++++++++ src/operators/s2r.ts | 2 +- src/rsp.test.ts | 102 ++++++++++++++++++++++++++++---------- src/rsp.ts | 3 ++ 5 files changed, 146 insertions(+), 31 deletions(-) diff --git a/src/operators/r2r.test.ts b/src/operators/r2r.test.ts index d4a59f8..d2e5b55 100644 --- a/src/operators/r2r.test.ts +++ b/src/operators/r2r.test.ts @@ -65,8 +65,7 @@ test('test_query_engine_with_extension_functions', async () => { const results = new Array(); // @ts-ignore bindingsStream.on('data', (binding) => { - console.log(binding); - + console.log(binding.toString()); // Quick way to print bindings for testing results.push(binding); }); @@ -104,7 +103,7 @@ test.skip('test_with_huge_quad_data', async () => { let parsed_query = rspql_parser.parse(rspql_query); let r2r = new R2ROperator(parsed_query.sparql); let quad_set = new Set(); - let number_of_quads = 3000; + let number_of_quads = 10; for (let i = 0; i < number_of_quads; i++) { @@ -126,9 +125,11 @@ test.skip('test_with_huge_quad_data', async () => { quad_set.add(stream_element2); } } + let quad_container = new QuadContainer(quad_set, 0); - let bindings_stream = await r2r.execute(quad_container); + let bindings_stream = await r2r.execute(quad_container); bindings_stream.on('data', (binding: any) => { + console.log(`Binding: ${binding.toString()}`); }); diff --git a/src/operators/s2r.test.ts b/src/operators/s2r.test.ts index ca07db1..9994a19 100644 --- a/src/operators/s2r.test.ts +++ b/src/operators/s2r.test.ts @@ -396,6 +396,67 @@ describe(`CSPARQLWindow computing window instances`, () => { }) + +describe('Quad Container Test Suite', () => { + test('add_to_quad_container', () => { + const quad1 = quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ); + const quad2 = quad( + namedNode('https://rsp.js/test_subject_1'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ); + const quad_container = new QuadContainer(new Set(), 0); + quad_container.add(quad1, 0); + quad_container.add(quad2, 1); + expect(quad_container.len()).toBe(2); + }); + + test('add_to_container_same_time', () => { + const quad1 = quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ); + const quad2 = quad( + namedNode('https://rsp.js/test_subject_1'), + namedNode('http://rsp.js/test_property'), + namedNode('http://rsp.js/test_object'), + defaultGraph(), + ); + const quad3 = quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property2'), + namedNode('http://rsp.js/test_object2'), + ) + const quad4 = quad( + namedNode('https://rsp.js/test_subject_0'), + namedNode('http://rsp.js/test_property3'), + namedNode('http://rsp.js/test_object3'), + ); + const quad_container = new QuadContainer(new Set(), 0); + quad_container.add(quad1, 0); + quad_container.add(quad2, 0); + quad_container.add(quad3, 0); + quad_container.add(quad4, 0); + expect(quad_container.len()).toBe(4); + const active_windows = new Map(); + const window1 = new WindowInstance(0, 10); + active_windows.set(window1, quad_container); + const window_content = active_windows.get(window1); + expect(window_content).toBeDefined(); + if (window_content) { + expect(window_content.len()).toBe(4); + } + }); +}); + /** * Check if the set contains the window instance. * @param {Set} set - The set of window instances. diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 090e04c..0b5572c 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -181,7 +181,7 @@ export class CSPARQLWindow { /** * Add the event to the window at the given timestamp and checks if the event is late or not. - * @param {Quad} e - The event to be added to the window. + * @param {Quad} event - The event to be added to the window. * @param {number} timestamp - The timestamp of the event. * @returns {void} - The function does not return anything. */ diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 1fd5b59..41d0023 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -1,4 +1,5 @@ import { RDFStream, RSPEngine } from "./rsp"; +import { RSPQLParser } from "./rspql"; const N3 = require('n3'); const { DataFactory } = N3; const { namedNode, defaultGraph, quad, literal } = DataFactory; @@ -334,10 +335,11 @@ test('test ooo event processing with varying delay settings', async () => { namedNode(`https://rsp.js/test_subject`), namedNode('http://rsp.js/test_property'), namedNode('http://rsp.js/test_object'), - defaultGraph() + defaultGraph('https://rsp.js/w1/') ) emitter.on('RStream', (object: any) => { + console.log(object.bindings.toString()); results.push(object.bindings.toString()); }); const sleep = (ms: any) => new Promise(r => setTimeout(r, ms)); @@ -363,6 +365,8 @@ test('test ooo event processing with varying delay settings', async () => { expect(results.length).toBeGreaterThan(0); console.log(results); }) +// SELECT (func:sqrt(?o * ?o + ?o2 * ?o2 + ?o3 * ?o3) AS ?activityIndex) + describe('test the rsp engine with out of order processing with various data frequency', () => { const location_one = "http://n078-03.wall1.ilabt.imec.be:3000/pod1/acc-x/"; @@ -375,33 +379,48 @@ describe('test the rsp engine with out of order processing with various data fre PREFIX dahccsensors: PREFIX func: REGISTER RStream AS - SELECT ?o + SELECT * + FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 10 STEP 5] + FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 10 STEP 5] + FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 10 STEP 5] - FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 6000 STEP 2000] - FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 6000 STEP 2000] - FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 6000 STEP 2000] + WHERE { + WINDOW :w1 { ?s saref:hasValue ?o . + ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + WINDOW :w2 { ?s2 saref:hasValue ?o2 . + ?s2 saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + WINDOW :w3 { ?s3 saref:hasValue ?o3 . + ?s3 saref:relatesToProperty dahccsensors:wearable.acceleration.x . + } + } + `; + + const query_two = ` + PREFIX : + PREFIX saref: + PREFIX dahccsensors: + PREFIX func: + REGISTER RStream AS + SELECT (func:sqrt(?o * ?o + ?o2 * ?o2 + ?o3 * ?o3) AS ?activityIndex) + FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 10 STEP 5] + FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 10 STEP 5] + FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 10 STEP 5] WHERE { - WINDOW :w1 { - ?s saref:hasValue ?o . - ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . - } - WINDOW :w2 { - ?s saref:hasValue ?o2 . - ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . - } - WINDOW :w3 { - ?s saref:hasValue ?o3 . - ?s saref:relatesToProperty dahccsensors:wearable.acceleration.x . - } + WINDOW :w1 { ?s saref:hasValue ?o .} + WINDOW :w2 { ?s2 saref:hasValue ?o2 .} + WINDOW :w3 { ?s3 saref:hasValue ?o3 .} } `; test('testing RSP Engine with 4Hz data frequency', async () => { - jest.setTimeout(100000); - const rsp_engine = new RSPEngine(query, { - max_delay: 1000, + const rsp_engine = new RSPEngine(query_two, { + max_delay: 0, }); + const rspql_parser = new RSPQLParser(); + console.log(rspql_parser.parse(query).sparql); const emitter = rsp_engine.register(); const results = new Array(); @@ -411,7 +430,7 @@ describe('test the rsp engine with out of order processing with various data fre if (stream_x && stream_y && stream_z) { const rdf_streams = [stream_x, stream_y, stream_z]; - generate_dummy_data(500, rdf_streams, 4); + generate_dummy_data(10, rdf_streams, 4); } emitter.on('RStream', (object: any) => { @@ -419,10 +438,39 @@ describe('test the rsp engine with out of order processing with various data fre results.push(object.bindings.toString()); }); - await sleep(500000); - console.log(results); + await sleep(2000); + console.log(results.length); + + }); - }); + + test('testing RSP Engine with 4Hz data frequency with multiple data on the same timestamp', async () => { + const rsp_engine = new RSPEngine(query_two, { + max_delay: 0, + }); + const rspql_parser = new RSPQLParser(); + console.log(rspql_parser.parse(query).sparql); + const emitter = rsp_engine.register(); + const results = new Array(); + + const stream_x = await rsp_engine.getStream(location_one); + const stream_y = await rsp_engine.getStream(location_two); + const stream_z = await rsp_engine.getStream(location_three); + + if (stream_x && stream_y && stream_z) { + const rdf_streams = [stream_x, stream_y, stream_z]; + generate_dummy_data(10, rdf_streams, 4); + } + + emitter.on('RStream', (object: any) => { + console.log(object.bindings.toString()); + results.push(object.bindings.toString()); + }); + + await sleep(2000); + console.log(results.length); + + }); }); @@ -458,6 +506,8 @@ test('testing the ooo processing with multiple events and multiple streams', asy defaultGraph() ) + // SELECT (func:sqrt(?o) as ?sqrt) (func:sqrt(?o2,2) as ?sqrt2) (func:sqrt(?o3) as ?sqrt3) + emitter.on('RStream', (object: any) => { results.push(object.bindings.toString()); }); @@ -512,9 +562,9 @@ async function generate_dummy_data(number_of_events: number, rdf_streams: RDFStr defaultGraph(), ); - const timestamp = Date.now(); + const timestamp = events_generated; stream.add(stream_element, timestamp); - stream.add(stream_element_two, timestamp); + stream.add(stream_element_two, timestamp); events_generated = events_generated + 1; } }); diff --git a/src/rsp.ts b/src/rsp.ts index d3b223a..ad61f1e 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -112,9 +112,12 @@ export class RSPEngine { // filter out the current triggering one if (windowIt != window) { const currentWindowData = windowIt.getContent(data.last_time_changed()); + this.logger.info(`Window Content ${data.len()} for time ${data.last_time_changed()} for window ${windowIt.getCSPARQLWindowDefinition()}`, `RSPEngine`); if (currentWindowData) { // add the content of the other windows to the quad container + console.log(`Data length before adding`,data.len()); currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); + console.log(`Data length after adding`,data.len()); } } } From 9ca9feeea78908f8f4255462600836b0d99c52ae Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 8 Oct 2024 13:45:03 +0200 Subject: [PATCH 38/50] fixed the conditional bug for adding the in order events with timestamp equal to the current time of the window. --- src/operators/s2r.ts | 2 +- src/rsp.test.ts | 106 ++++++++++++++++++++++++++++++++++++++++--- src/rsp.ts | 12 ++--- 3 files changed, 107 insertions(+), 13 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 0b5572c..f55058a 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -221,7 +221,7 @@ export class CSPARQLWindow { } } this.time = timestamp; - } else if (timestamp > this.time) { + } else if (timestamp >= this.time) { this.time = timestamp this.logger.info(`in_order_event_received`, `CSPARQLWindow`); // In order event handling diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 41d0023..66a1594 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -440,9 +440,7 @@ describe('test the rsp engine with out of order processing with various data fre await sleep(2000); console.log(results.length); - - }); - + }); test('testing RSP Engine with 4Hz data frequency with multiple data on the same timestamp', async () => { const rsp_engine = new RSPEngine(query_two, { @@ -469,12 +467,108 @@ describe('test the rsp engine with out of order processing with various data fre await sleep(2000); console.log(results.length); + }); + + test('testing the RSP Engine with 4Hz data frequency and same subject with different predicate object pairs', async () => { + jest.setTimeout(100000); + const query_activity_index = ` + PREFIX : + PREFIX saref: + PREFIX dahccsensors: + PREFIX func: + REGISTER RStream AS + SELECT (func:sqrt(?o * ?o + ?o2 * ?o2 + ?o3 * ?o3) AS ?activityIndex) + FROM NAMED WINDOW :w1 ON STREAM <${location_one}> [RANGE 10 STEP 2] + FROM NAMED WINDOW :w2 ON STREAM <${location_two}> [RANGE 10 STEP 2] + FROM NAMED WINDOW :w3 ON STREAM <${location_three}> [RANGE 10 STEP 2] + + WHERE { + WINDOW :w1 { ?s saref:hasValue ?o .} + WINDOW :w2 { ?s2 saref:hasValue ?o2 .} + WINDOW :w3 { ?s3 saref:hasValue ?o3 .} + } + `; + + const rsp_engine = new RSPEngine(query_activity_index, { max_delay: 0 }); + const emitter = rsp_engine.register(); + + const stream_x = await rsp_engine.getStream(location_one); + const stream_y = await rsp_engine.getStream(location_two); + const stream_z = await rsp_engine.getStream(location_three); + + const results: string[] = []; - }); + // Promise to listen for stream results + const resultPromise = new Promise((resolve) => { + emitter.on('RStream', (object: any) => { + console.log(object.bindings.toString()); + results.push(object.bindings.toString()); + + // Resolve the promise when sufficient results are collected + if (results.length >= 0) { + resolve(); // Adjust number based on expected results + } + }); + }); + + if (stream_x && stream_y && stream_z) { + // Add quads to the streams + const event_one = quad( + namedNode('https://rsp.js/test_subject_1'), + namedNode('https://saref.etsi.org/core/hasValue'), + literal('1', namedNode('http://www.w3.org/2001/XMLSchema#integer')), + defaultGraph(), + ); + const event_two = quad( + namedNode('https://rsp.js/test_subject_1'), + namedNode('https://saref.etsi.org/core/relatesToProperty'), + namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), + defaultGraph(), + ); + + // Add events to streams at different timestamps + stream_x.add(event_one, 0); + stream_x.add(event_two, 0); + stream_y.add(event_one, 0); + stream_y.add(event_two, 0); + stream_z.add(event_one, 0); + stream_z.add(event_two, 0); + + const event_three = quad( + namedNode('https://rsp.js/test_subject_2'), + namedNode('https://saref.etsi.org/core/hasValue'), + literal('2', namedNode('http://www.w3.org/2001/XMLSchema#integer')), + defaultGraph(), + ); + + const event_four = quad( + namedNode('https://rsp.js/test_subject_2'), + namedNode('https://saref.etsi.org/core/relatesToProperty'), + namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), + defaultGraph(), + ); + + stream_x.add(event_three, 5); + stream_x.add(event_four, 5); + stream_y.add(event_three, 5); + stream_y.add(event_four, 5); + stream_z.add(event_three, 5); + stream_z.add(event_four, 5); + + stream_x.add(event_one, 10); + stream_x.add(event_two, 10); + stream_y.add(event_one, 10); + stream_y.add(event_two, 10); + stream_z.add(event_one, 10); + stream_z.add(event_two, 10); + } + + // Await until the results are gathered + await resultPromise; + }); }); - test('testing the ooo processing with multiple events and multiple streams', async () => { const query = ` PREFIX : @@ -564,7 +658,7 @@ async function generate_dummy_data(number_of_events: number, rdf_streams: RDFStr const timestamp = events_generated; stream.add(stream_element, timestamp); - stream.add(stream_element_two, timestamp); + stream.add(stream_element_two, timestamp); events_generated = events_generated + 1; } }); diff --git a/src/rsp.ts b/src/rsp.ts index ad61f1e..39c6a2b 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -101,29 +101,29 @@ export class RSPEngine { register() { const EventEmitter = require('events').EventEmitter; const emitter = new EventEmitter(); - this.windows.forEach((window) => { + this.windows.forEach((window) => { window.subscribe("RStream", async (data: QuadContainer) => { if (data) { if (data.len() > 0) { this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); - console.log(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); // iterate over all the windows for (const windowIt of this.windows) { // filter out the current triggering one if (windowIt != window) { - const currentWindowData = windowIt.getContent(data.last_time_changed()); + const currentWindowData = windowIt.getContent(data.last_time_changed()); this.logger.info(`Window Content ${data.len()} for time ${data.last_time_changed()} for window ${windowIt.getCSPARQLWindowDefinition()}`, `RSPEngine`); if (currentWindowData) { // add the content of the other windows to the quad container - console.log(`Data length before adding`,data.len()); + this.logger.info(`Data length before adding ${data.len()}`, `RSPEngine`); currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); - console.log(`Data length after adding`,data.len()); + this.logger.info(`Data length after adding ${data.len()}`, `RSPEngine`); } } } this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); - console.log(`Starting Window Query Processing for the window time ${data.last_time_changed()} with window size ${data.len()}`, `RSPEngine`); const bindingsStream = await this.r2r.execute(data); + console.log(data.elements); + this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); bindingsStream.on('data', (binding: any) => { const object_with_timestamp: binding_with_timestamp = { From bb1d692ba28ac519b8f8a643e327547292319b71 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Tue, 8 Oct 2024 13:45:29 +0200 Subject: [PATCH 39/50] updated the package.json's version --- package.json | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/package.json b/package.json index 8c5f3ad..5c2b323 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "2.0.0", + "version": "2.1.0", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", From 4847d565508d45d1e8e32b449c5e84df5eefa6ca Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Mon, 21 Oct 2024 11:00:37 +0200 Subject: [PATCH 40/50] Refactor logger messages in RSPEngine and CSPARQLWindow classes --- src/rsp.test.ts | 2 +- src/rsp.ts | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 66a1594..683ac23 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -469,7 +469,7 @@ describe('test the rsp engine with out of order processing with various data fre console.log(results.length); }); - test('testing the RSP Engine with 4Hz data frequency and same subject with different predicate object pairs', async () => { + test.skip('testing the RSP Engine with 4Hz data frequency and same subject with different predicate object pairs', async () => { jest.setTimeout(100000); const query_activity_index = ` PREFIX : diff --git a/src/rsp.ts b/src/rsp.ts index 39c6a2b..7beb180 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -121,10 +121,11 @@ export class RSPEngine { } } this.logger.info(`Starting Window Query Processing for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + let time_start_query_processing = new Date().getTime(); const bindingsStream = await this.r2r.execute(data); - console.log(data.elements); - + let time_end_query_processing = new Date().getTime(); this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + this.logger.info(`Time taken for query processing for window ${window.getCSPARQLWindowDefinition()} is ${time_end_query_processing - time_start_query_processing} ms with window size ${data.len()}`, `RSPEngine`); bindingsStream.on('data', (binding: any) => { const object_with_timestamp: binding_with_timestamp = { bindings: binding, From acad00c4dad98703cb9b50b25158965f1ff3b3d3 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 30 Oct 2024 11:31:07 +0100 Subject: [PATCH 41/50] edited the logger and added logging to each bounds --- src/operators/s2r.ts | 7 ++++--- src/util/Logger.ts | 2 +- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index f55058a..7ac21be 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -187,8 +187,7 @@ export class CSPARQLWindow { */ add(event: Quad, timestamp: number): void { - this.logger.info(`Current Time: ${this.time} Current Watermark: ${this.current_watermark}`, `CSPARQLWindow`); - this.logger.info(`adding_event`, `CSPARQLWindow`); + this.logger.info(`adding_event_to_the_window`, `CSPARQLWindow`); console.debug(`Adding [" + ${event} + "] at time : ${timestamp} and watermark ${this.current_watermark}`); let t_e = timestamp; let to_evict = new Set(); @@ -211,7 +210,8 @@ export class CSPARQLWindow { if (w.open <= t_e && t_e < w.close) { let temp_window = this.active_windows.get(w); if (temp_window) { - this.logger.info(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`); + // TODO: log this for when the event is added to the window and for the latency calculation + this.logger.info(`adding_out_of_order_event ${event.subject.value} to the window ${this.name} with bounds ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`); temp_window.add(event, t_e); } } @@ -232,6 +232,7 @@ export class CSPARQLWindow { console.debug(`Adding the event ${event} to the window ${w.getDefinition()} at time ${timestamp}`); let window_to_add = this.active_windows.get(w); if (window_to_add) { + this.logger.info(`adding_in_order_event ${event.subject.value} to the window ${this.name} with bounds ${w.getDefinition()} at time ${timestamp}`, `CSPARQLWindow`); window_to_add.add(event, t_e); } } diff --git a/src/util/Logger.ts b/src/util/Logger.ts index 69598f6..5c6ceed 100644 --- a/src/util/Logger.ts +++ b/src/util/Logger.ts @@ -29,7 +29,7 @@ export class Logger { log(level: LogLevel, message: string, className: string) { if (level >= this.log_level && this.loggable_classes.includes(className)) { const logPrefix = `[${LogLevel[level]}] [${className}]`; - const logMessage = `${Date.now()},${logPrefix},${message}`; + const logMessage = `${Date.now()},${message}`; switch (this.log_destination) { case 'CONSOLE': console.log(logMessage); From 8179f056775242d8c60fd55463a4e07ee7117250 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 30 Oct 2024 11:36:11 +0100 Subject: [PATCH 42/50] edited the package.json --- package.json | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/package.json b/package.json index 5c2b323..2c11b7f 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "2.1.0", + "version": "2.2.0", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", From 83f5a6640b6fe0ef2c0a17e451c89f1e7a804acd Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 31 Oct 2024 14:46:47 +0100 Subject: [PATCH 43/50] added an extra log for the window trigger --- src/operators/s2r.ts | 1 + 1 file changed, 1 insertion(+) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 7ac21be..603c2d5 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -277,6 +277,7 @@ export class CSPARQLWindow { this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); if (max_window) { this.emitter.emit('RStream', this.active_windows.get(max_window)); + this.logger.info(`Window with bounds [${max_window.open}${max_window.close}) ${max_window.getDefinition()} is triggered for the window name${this.name}`, `CSPARQLWindow`); this.active_windows.delete(max_window); } this.time = timestamp; From e2f5efeec8b40a4975e9f80b938dfe68b01b77b1 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 14 Nov 2024 00:02:48 +0100 Subject: [PATCH 44/50] Add log_enabled option to RSPEngine constructor --- src/rsp.test.ts | 4 +++- src/rsp.ts | 12 ++++++++++-- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/src/rsp.test.ts b/src/rsp.test.ts index 683ac23..d3e7505 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -49,7 +49,9 @@ test('rsp_consumer_test', async () => { WINDOW :w1 { ?s ?p ?o} }`; - const rspEngine = new RSPEngine(query); + const rspEngine = new RSPEngine(query, { + log_enabled: false, + }); const stream = rspEngine.getStream("https://rsp.js/stream1"); const emitter = rspEngine.register(); const results = new Array(); diff --git a/src/rsp.ts b/src/rsp.ts index 7beb180..a58a429 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -60,6 +60,7 @@ export class RSPEngine { windows: Array; streams: Map; public max_delay: number; + public log_enabled!: boolean; private r2r: R2ROperator; private logger: Logger; @@ -72,17 +73,24 @@ export class RSPEngine { */ constructor(query: string, opts?: { max_delay?: number + log_enabled?: boolean }) { this.windows = new Array(); if (opts) { this.max_delay = opts.max_delay ? opts.max_delay : 0; + this.log_enabled = opts.log_enabled ? opts.log_enabled : false; } else { this.max_delay = 0; } - this.streams = new Map(); const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; - this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); + if (this.log_enabled) { + this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); + } + else { + this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, 'CONSOLE'); + } + this.streams = new Map(); const parser = new RSPQLParser(); const parsed_query = parser.parse(query); parsed_query.s2r.forEach((window: WindowDefinition) => { From 22f1602316c6c8bfc7352a6fad6bbad5e8e8d771 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 14 Nov 2024 00:03:58 +0100 Subject: [PATCH 45/50] Bump version to 2.3.0 in package.json --- package.json | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/package.json b/package.json index 2c11b7f..a8968a2 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "2.2.0", + "version": "2.3.0", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", From 25e0c4e68ac37a3849bd291dc3a88f2ac51e75bc Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 14 Nov 2024 00:16:43 +0100 Subject: [PATCH 46/50] Bump version to 2.4.0 and enable logging by default in RSPEngine --- package.json | 2 +- src/rsp.ts | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/package.json b/package.json index a8968a2..2003d05 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "2.3.0", + "version": "2.4.0", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", diff --git a/src/rsp.ts b/src/rsp.ts index a58a429..097070d 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -78,7 +78,7 @@ export class RSPEngine { this.windows = new Array(); if (opts) { this.max_delay = opts.max_delay ? opts.max_delay : 0; - this.log_enabled = opts.log_enabled ? opts.log_enabled : false; + this.log_enabled = opts.log_enabled ? opts.log_enabled : true; } else { this.max_delay = 0; From cca66221ba102e6bb8e29d1dd6a9d5bb6aa6b0fa Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 20 Nov 2024 17:03:36 +0100 Subject: [PATCH 47/50] removed the logger in the rsp.js constructor --- package.json | 2 +- src/rsp.test.ts | 25 ++++++++++++------------- src/rsp.ts | 11 ++--------- 3 files changed, 15 insertions(+), 23 deletions(-) diff --git a/package.json b/package.json index 2003d05..9857cab 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "2.4.0", + "version": "2.4.1", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", diff --git a/src/rsp.test.ts b/src/rsp.test.ts index d3e7505..862c512 100644 --- a/src/rsp.test.ts +++ b/src/rsp.test.ts @@ -50,7 +50,6 @@ test('rsp_consumer_test', async () => { }`; const rspEngine = new RSPEngine(query, { - log_enabled: false, }); const stream = rspEngine.getStream("https://rsp.js/stream1"); const emitter = rspEngine.register(); @@ -490,29 +489,29 @@ describe('test the rsp engine with out of order processing with various data fre WINDOW :w3 { ?s3 saref:hasValue ?o3 .} } `; - + const rsp_engine = new RSPEngine(query_activity_index, { max_delay: 0 }); const emitter = rsp_engine.register(); - + const stream_x = await rsp_engine.getStream(location_one); const stream_y = await rsp_engine.getStream(location_two); const stream_z = await rsp_engine.getStream(location_three); - + const results: string[] = []; - + // Promise to listen for stream results const resultPromise = new Promise((resolve) => { emitter.on('RStream', (object: any) => { console.log(object.bindings.toString()); results.push(object.bindings.toString()); - + // Resolve the promise when sufficient results are collected if (results.length >= 0) { resolve(); // Adjust number based on expected results } }); }); - + if (stream_x && stream_y && stream_z) { // Add quads to the streams const event_one = quad( @@ -527,7 +526,7 @@ describe('test the rsp engine with out of order processing with various data fre namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), defaultGraph(), ); - + // Add events to streams at different timestamps stream_x.add(event_one, 0); stream_x.add(event_two, 0); @@ -535,28 +534,28 @@ describe('test the rsp engine with out of order processing with various data fre stream_y.add(event_two, 0); stream_z.add(event_one, 0); stream_z.add(event_two, 0); - + const event_three = quad( namedNode('https://rsp.js/test_subject_2'), namedNode('https://saref.etsi.org/core/hasValue'), literal('2', namedNode('http://www.w3.org/2001/XMLSchema#integer')), defaultGraph(), ); - + const event_four = quad( namedNode('https://rsp.js/test_subject_2'), namedNode('https://saref.etsi.org/core/relatesToProperty'), namedNode('https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/wearable.acceleration.x'), defaultGraph(), ); - + stream_x.add(event_three, 5); stream_x.add(event_four, 5); stream_y.add(event_three, 5); stream_y.add(event_four, 5); stream_z.add(event_three, 5); stream_z.add(event_four, 5); - + stream_x.add(event_one, 10); stream_x.add(event_two, 10); stream_y.add(event_one, 10); @@ -564,7 +563,7 @@ describe('test the rsp engine with out of order processing with various data fre stream_z.add(event_one, 10); stream_z.add(event_two, 10); } - + // Await until the results are gathered await resultPromise; }); diff --git a/src/rsp.ts b/src/rsp.ts index 097070d..033d6a0 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -62,7 +62,7 @@ export class RSPEngine { public max_delay: number; public log_enabled!: boolean; private r2r: R2ROperator; - private logger: Logger; + public logger: Logger; /** * Constructor for the RSPEngine class. @@ -73,23 +73,16 @@ export class RSPEngine { */ constructor(query: string, opts?: { max_delay?: number - log_enabled?: boolean }) { this.windows = new Array(); if (opts) { this.max_delay = opts.max_delay ? opts.max_delay : 0; - this.log_enabled = opts.log_enabled ? opts.log_enabled : true; } else { this.max_delay = 0; } const logLevel: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; - if (this.log_enabled) { - this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); - } - else { - this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, 'CONSOLE'); - } + this.logger = new Logger(logLevel, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); this.streams = new Map(); const parser = new RSPQLParser(); const parsed_query = parser.parse(query); From d43c7e0ca0b9c01cfa4caee56c1040d4022a4300 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Wed, 20 Nov 2024 19:36:34 +0100 Subject: [PATCH 48/50] fixed the window delete logic --- package.json | 2 +- src/operators/s2r.ts | 42 +++++++++++++++++++++++++++--------------- 2 files changed, 28 insertions(+), 16 deletions(-) diff --git a/package.json b/package.json index 9857cab..73e82ba 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "rsp-js", - "version": "2.4.1", + "version": "2.5.1", "description": "", "types": "dist/index.d.ts", "main": "dist/index.js", diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 603c2d5..7ac9847 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -260,6 +260,7 @@ export class CSPARQLWindow { let max_window: WindowInstance | null = null; let max_time = 0; + // Identify the window to trigger this.active_windows.forEach((value: QuadContainer, window: WindowInstance) => { if (this.compute_report(window, value, watermark)) { if (window.close > max_time) { @@ -270,30 +271,41 @@ export class CSPARQLWindow { }); if (max_window) { - if (this.tick == Tick.TimeDriven) { - if (watermark >= max_time) { - setTimeout(() => { + if (this.tick == Tick.TimeDriven && watermark >= max_time) { + setTimeout(() => { + if (max_window) { if (watermark >= max_time + this.max_delay) { this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); - if (max_window) { - this.emitter.emit('RStream', this.active_windows.get(max_window)); - this.logger.info(`Window with bounds [${max_window.open}${max_window.close}) ${max_window.getDefinition()} is triggered for the window name${this.name}`, `CSPARQLWindow`); - this.active_windows.delete(max_window); + if (max_window) { } + const windowToDelete = this.findWindowInstance(max_window); + if (windowToDelete) { + this.emitter.emit('RStream', this.active_windows.get(windowToDelete)); + this.logger.info(`Window with bounds [${windowToDelete.open},${windowToDelete.close}) ${windowToDelete.getDefinition()} is triggered for the window name ${this.name}`, `CSPARQLWindow`); + this.active_windows.delete(windowToDelete); } this.time = timestamp; - } - else { + } else { this.logger.info(`Window will not trigger.`, `CSPARQLWindow`); } - }, this.max_delay); - } - else { - this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`); - console.error(`Window is out of the watermark and will not trigger`); - } + } + }, this.max_delay); + } else { + this.logger.info(`Window ${max_window} is out of the watermark and will not trigger.`, `CSPARQLWindow`); + console.error(`Window is out of the watermark and will not trigger`); } } } + + // Helper to find the matching instance in the Map + private findWindowInstance(target: WindowInstance): WindowInstance | undefined { + for (const window of this.active_windows.keys()) { + if (window.is_same(target)) { + return window; + } + } + return undefined; + } + /** * Updating the watermark. * @param {number} new_time - The new watermark to be set. From 15e4c0239b51fbe3e38740b82e041e2c29f1f49b Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Mon, 25 Nov 2024 16:08:19 +0100 Subject: [PATCH 49/50] added trigger boolean logic --- src/operators/s2r.ts | 3 ++- src/rsp.ts | 12 ++++++------ 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index 7ac9847..db71b00 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -273,7 +273,7 @@ export class CSPARQLWindow { if (max_window) { if (this.tick == Tick.TimeDriven && watermark >= max_time) { setTimeout(() => { - if (max_window) { + if (max_window && max_window.has_triggered === false) { if (watermark >= max_time + this.max_delay) { this.logger.info(`Watermark ${watermark} `, `CSPARQLWindow`); if (max_window) { } @@ -281,6 +281,7 @@ export class CSPARQLWindow { if (windowToDelete) { this.emitter.emit('RStream', this.active_windows.get(windowToDelete)); this.logger.info(`Window with bounds [${windowToDelete.open},${windowToDelete.close}) ${windowToDelete.getDefinition()} is triggered for the window name ${this.name}`, `CSPARQLWindow`); + max_window.set_triggered(); this.active_windows.delete(windowToDelete); } this.time = timestamp; diff --git a/src/rsp.ts b/src/rsp.ts index 033d6a0..3825bbd 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -106,18 +106,18 @@ export class RSPEngine { window.subscribe("RStream", async (data: QuadContainer) => { if (data) { if (data.len() > 0) { - this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); + // this.logger.info(`Received window content for time ${data.last_time_changed()}`, `RSPEngine`); // iterate over all the windows for (const windowIt of this.windows) { // filter out the current triggering one if (windowIt != window) { const currentWindowData = windowIt.getContent(data.last_time_changed()); - this.logger.info(`Window Content ${data.len()} for time ${data.last_time_changed()} for window ${windowIt.getCSPARQLWindowDefinition()}`, `RSPEngine`); + // this.logger.info(`Window Content ${data.len()} for time ${data.last_time_changed()} for window ${windowIt.getCSPARQLWindowDefinition()}`, `RSPEngine`); if (currentWindowData) { // add the content of the other windows to the quad container - this.logger.info(`Data length before adding ${data.len()}`, `RSPEngine`); + // this.logger.info(`Data length before adding ${data.len()}`, `RSPEngine`); currentWindowData.elements.forEach((q) => data.add(q, data.last_time_changed())); - this.logger.info(`Data length after adding ${data.len()}`, `RSPEngine`); + // this.logger.info(`Data length after adding ${data.len()}`, `RSPEngine`); } } } @@ -126,7 +126,7 @@ export class RSPEngine { const bindingsStream = await this.r2r.execute(data); let time_end_query_processing = new Date().getTime(); this.logger.info(`Ended the execution of the R2R Operator for the window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); - this.logger.info(`Time taken for query processing for window ${window.getCSPARQLWindowDefinition()} is ${time_end_query_processing - time_start_query_processing} ms with window size ${data.len()}`, `RSPEngine`); + // this.logger.info(`Time taken for query processing for window ${window.getCSPARQLWindowDefinition()} is ${time_end_query_processing - time_start_query_processing} ms with window size ${data.len()}`, `RSPEngine`); bindingsStream.on('data', (binding: any) => { const object_with_timestamp: binding_with_timestamp = { bindings: binding, @@ -137,7 +137,7 @@ export class RSPEngine { emitter.emit("RStream", object_with_timestamp); }); bindingsStream.on('end', () => { - this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); + // this.logger.info(`Ended Comunica Binding Stream for window ${window.getCSPARQLWindowDefinition()} with window size ${data.len()}`, `RSPEngine`); }); await bindingsStream; } From 5dac00cc347c52016e2f8851779b5cb3ed41efc1 Mon Sep 17 00:00:00 2001 From: Kushagra Singh Bisen Date: Thu, 31 Jul 2025 10:40:28 +0200 Subject: [PATCH 50/50] Enhance R2ROperator with logging capabilities and refactor scope calculation in CSPARQLWindow --- src/operators/r2r.ts | 70 +++++++++++++++++++++++++++++++++----------- src/operators/s2r.ts | 2 +- src/rsp.ts | 2 ++ 3 files changed, 56 insertions(+), 18 deletions(-) diff --git a/src/operators/r2r.ts b/src/operators/r2r.ts index cbd32e2..ae8e8b7 100644 --- a/src/operators/r2r.ts +++ b/src/operators/r2r.ts @@ -1,51 +1,67 @@ import { QuadContainer } from "./s2r"; import { DataFactory } from "rdf-data-factory"; const N3 = require('n3'); +import { Store, Writer } from 'n3'; const DF = new DataFactory(); +import { ParseOptions } from "rdf-parse/lib/RdfParser"; +const rdfParser = require("rdf-parse").default; +const storeStream = require("rdf-store-stream").storeStream; +const streamifyString = require('streamify-string'); +import { n3reasoner, runQuery, SwiplEye } from "eyereasoner"; const QueryEngine = require('@comunica/query-sparql').QueryEngine; +const { EventEmitter } = require('events').EventEmitter; +let theEvent = new EventEmitter(); +require('events').EventEmitter.defaultMaxListeners = Infinity; // @ts-ignore import { Quad } from 'n3'; +import { resolve } from "path"; +import { Logger } from "../util/Logger"; +import { LogLevel, LogDestination } from "../util/LoggerEnum"; +import * as LOG_CONFIG from "../config/log_config.json"; /** * R2R Operator Implementation Class for the RSP Engine. * It performs operations such as Join, Filter, Aggregation on a stream of data * to generate a new stream of data. */ -export class R2ROperator { +export class R2ROperator extends EventEmitter { query: string; staticData: Set; - /** - * Constructor to initialize the R2R Operator. - * @param {string} query - The query to be executed. - */ + logger: Logger; + constructor(query: string) { + super(); this.query = query; + const log_level: LogLevel = LogLevel[LOG_CONFIG.log_level as keyof typeof LogLevel]; + this.logger = new Logger(log_level, LOG_CONFIG.classes_to_log, LOG_CONFIG.destination as unknown as LogDestination); + this.logger.info(`R2ROperator initialized with query: ${query}`,'R2ROperator'); this.staticData = new Set(); } + /** - * Add static data to the R2R Operator which will be used in the query execution - * In case there are some quads which are present in each of the relation to be executed, it is better to add them as static data - * and therefore save space and the amount of data to be processed. + * Add static data to the R2R Operator. * @param {Quad} quad - The quad to be added as static data. */ addStaticData(quad: Quad) { this.staticData.add(quad); } - /** - * Execute the R2R Operator on the given container of quads. - * @param {QuadContainer} container - The container of quads on which the operator is to be executed. The container contains a set of quads. - * @returns {Promise} - The promise of the result of the query execution. - */ - async execute(container: QuadContainer) { + + async execute(container: QuadContainer): Promise { const store = new N3.Store(); - for (const elem of container.elements) { + for (let elem of container.elements) { store.addQuad(elem); } - for (const elem of this.staticData) { + for (let elem of this.staticData) { store.addQuad(elem); } + this.logger.info(`Executing R2R Operator with query: ${this.query}`, 'R2ROperator'); + this.logger.info(`Static data size: ${this.staticData.size}`, 'R2ROperator'); + this.logger.info(`Store size: ${store.size}`, 'R2ROperator'); + this.logger.info(`Store content: ${storeToString(store).join('\n')}`, 'R2ROperator'); + const myEngine = new QueryEngine(); - return await myEngine.queryBindings(this.query, { + + const bindings_stream = myEngine.queryBindings(this.query, { sources: [store], extensionFunctions: { 'http://extension.org/functions#sqrt'(args: any) { @@ -65,5 +81,25 @@ export class R2ROperator { } }, }); + + return bindings_stream; } } + +/** + * Convert a store to a string representation. + * @param {Store} store - The N3 Store to be converted. + * @returns {string[]} - Array of string representations of the quads. + */ +export function storeToString(store: Store): string[] { + const writer = new Writer(); + return store.getQuads(null, null, null, null).map(quad => writer.quadToString(quad.subject, quad.predicate, quad.object, quad.graph)); +} + + + +export async function stringToStore(text: string, options: ParseOptions): Promise { + const textStream = streamifyString(text); + const quadStream = rdfParser.parse(textStream, options); + return await storeStream(quadStream); +} \ No newline at end of file diff --git a/src/operators/s2r.ts b/src/operators/s2r.ts index db71b00..47a81bc 100644 --- a/src/operators/s2r.ts +++ b/src/operators/s2r.ts @@ -354,7 +354,7 @@ export class CSPARQLWindow { * @returns {void} - The function does not return anything. */ scope(t_e: number) { - const c_sup = Math.ceil((Math.abs(t_e - this.t0) / this.slide)) * this.slide; + const c_sup = (Math.abs(t_e - this.t0) / this.slide) * this.slide; let o_i = c_sup - this.width; console.log(`Scope the window for the event at time ${t_e}`); console.log(`${c_sup} - ${this.width} = ${o_i}`); diff --git a/src/rsp.ts b/src/rsp.ts index 3825bbd..8eaaef1 100644 --- a/src/rsp.ts +++ b/src/rsp.ts @@ -7,6 +7,8 @@ import { LogLevel, LogDestination } from "./util/LoggerEnum"; const N3 = require('n3'); const { DataFactory } = N3; const { namedNode } = DataFactory; +import { LogLevel as LogLevelEnum } from "./util/LoggerEnum"; +import { LogDestination as LogDestinationEnum } from "./util/LoggerEnum"; // @ts-ignore import { Quad } from 'n3'; import { RSPQLParser, WindowDefinition } from "./rspql";