feat: Add option to change log levels of username already exists message

resources/buildConfigDefinitions.js

@@ -25,6 +25,7 @@ const nestedOptionTypes = [
   'SecurityOptions',
   'SchemaOptions',
   'LogLevels',
+  'LogEvents',
 ];
 
 /** The prefix of environment variables for nested options. */
@@ -39,6 +40,7 @@ const nestedOptionEnvPrefix = {
   LogClientEvent: 'PARSE_SERVER_DATABASE_LOG_CLIENT_EVENTS_',
   LogLevel: 'PARSE_SERVER_LOG_LEVEL_',
   LogLevels: 'PARSE_SERVER_LOG_LEVELS_',
+  LogEvents: 'PARSE_SERVER_LOG_EVENTS_',
   PagesCustomUrlsOptions: 'PARSE_SERVER_PAGES_CUSTOM_URL_',
   PagesOptions: 'PARSE_SERVER_PAGES_',
   PagesRoute: 'PARSE_SERVER_PAGES_ROUTE_',

spec/ParseUser.spec.js

@@ -81,6 +81,59 @@ describe('Parse.User testing', () => {
     }
   });
 
+  it('logs username taken with configured log level', async () => {
+    await reconfigureServer({ logEvents: { usernameAlreadyExists: 'warn' } });
+    const logger = require('../lib/logger').default;
+    loggerErrorSpy = spyOn(logger, 'error').and.callThrough();
+    const loggerWarnSpy = spyOn(logger, 'warn').and.callThrough();
+
+    const user = new Parse.User();
+    user.setUsername('dupUser');
+    user.setPassword('pass');
+    await user.signUp();
+
+    const user2 = new Parse.User();
+    user2.setUsername('dupUser');
+    user2.setPassword('pass2');
+
+    expect(loggerWarnSpy).not.toHaveBeenCalled();
+
+    try {
+      await user2.signUp();
+      fail('should have thrown');
+    } catch (e) {
+      expect(e.code).toBe(Parse.Error.USERNAME_TAKEN);
+    }
+
+    expect(loggerWarnSpy).toHaveBeenCalledTimes(1);
+    expect(loggerErrorSpy.calls.count()).toBe(0);
+  });
+
+  it('can silence username taken log event', async () => {
+    await reconfigureServer({ logEvents: { usernameAlreadyExists: 'silent' } });
+    const logger = require('../lib/logger').default;
+    loggerErrorSpy = spyOn(logger, 'error').and.callThrough();
+    const loggerWarnSpy = spyOn(logger, 'warn').and.callThrough();
+
+    const user = new Parse.User();
+    user.setUsername('dupUser');
+    user.setPassword('pass');
+    await user.signUp();
+
+    const user2 = new Parse.User();
+    user2.setUsername('dupUser');
+    user2.setPassword('pass2');
+    try {
+      await user2.signUp();
+      fail('should have thrown');
+    } catch (e) {
+      expect(e.code).toBe(Parse.Error.USERNAME_TAKEN);
+    }
+
+    expect(loggerWarnSpy).not.toHaveBeenCalled();
+    expect(loggerErrorSpy.calls.count()).toBe(0);
+  });
+
   it('user login with context', async () => {
     let hit = 0;
     const context = { foo: 'bar' };

src/Config.js

@@ -14,6 +14,7 @@ import {
   FileUploadOptions,
   IdempotencyOptions,
   LogLevels,
+  LogEvents,
   PagesOptions,
   ParseServerOptions,
   SchemaOptions,
@@ -128,6 +129,7 @@ export class Config {
     requestKeywordDenylist,
     allowExpiredAuthDataToken,
     logLevels,
+    logEvents,
     rateLimit,
     databaseOptions,
     extendSessionOnUse,
@@ -170,6 +172,7 @@ export class Config {
     this.validateRequestKeywordDenylist(requestKeywordDenylist);
     this.validateRateLimit(rateLimit);
     this.validateLogLevels(logLevels);
+    this.validateLogEvents(logEvents);
     this.validateDatabaseOptions(databaseOptions);
     this.validateCustomPages(customPages);
     this.validateAllowClientClassCreation(allowClientClassCreation);
@@ -641,6 +644,19 @@ export class Config {
     }
   }
 
+  static validateLogEvents(logEvents) {
+    for (const key of Object.keys(LogEvents)) {
+      if (logEvents[key]) {
+        // We validate that each configured event uses a valid log *level* (same list as logLevels).
+        if (validLogLevels.indexOf(logEvents[key]) === -1) {
+          throw `'${key}' must be one of ${JSON.stringify(validLogLevels)}`;
+        }
+      } else {
+        logEvents[key] = LogEvents[key].default;
+      }
+    }
+  }
+
   static validateDatabaseOptions(databaseOptions) {
     if (databaseOptions == undefined) {
       return;

src/Options/Definitions.js

@@ -352,6 +352,13 @@ module.exports.ParseServerOptions = {
     action: parsers.objectParser,
     type: 'LiveQueryServerOptions',
   },
+  logEvents: {
+    env: 'PARSE_SERVER_LOG_EVENTS',
+    help: '(Optional) Overrides the log levels used by specific log events.',
+    action: parsers.objectParser,
+    type: 'LogEvents',
+    default: {},
+  },
   loggerAdapter: {
     env: 'PARSE_SERVER_LOGGER_ADAPTER',
     help: 'Adapter module for the logging sub-system',
@@ -1507,3 +1514,11 @@ module.exports.LogLevels = {
     default: 'info',
   },
 };
+module.exports.LogEvents = {
+  usernameAlreadyExists: {
+    env: 'PARSE_SERVER_LOG_EVENTS_USERNAME_ALREADY_EXISTS',
+    help:
+      'Log level used when a sign-up fails because the username already exists. Default is `error`. See [LogLevel](LogLevel.html) for available values.',
+    default: 'error',
+  },
+};

src/Options/index.js

@@ -98,6 +98,9 @@ export interface ParseServerOptions {
   /* (Optional) Overrides the log levels used internally by Parse Server to log events.
   :DEFAULT: {} */
   logLevels: ?LogLevels;
+  /* (Optional) Overrides the log levels used by specific log events.
+  :DEFAULT: {} */
+  logEvents: ?LogEvents;
   /* Maximum number of logs to keep. If not set, no logs will be removed. This can be a number of files or number of days. If using days, add 'd' as the suffix. (default: null) */
   maxLogFiles: ?NumberOrString;
   /* Disables console output
@@ -790,3 +793,10 @@ export interface LogLevels {
   */
   cloudFunctionError: ?string;
 }
+
+export interface LogEvents {
+  /* Log level used when a sign-up fails because the username already exists. Default is `error`. See [LogLevel](LogLevel.html) for available values.
+  :DEFAULT: error
+  */
+  usernameAlreadyExists: ?string;
+}

src/middlewares.js

@@ -466,6 +466,7 @@ export function handleParseErrors(err, req, res, next) {
     if (req.config && req.config.enableExpressErrorHandler) {
       return next(err);
     }
+    const usernameAlreadyExistsLevel = req.config?.logEvents?.usernameAlreadyExists || 'error';
     let httpStatus;
     // TODO: fill out this mapping
     switch (err.code) {
@@ -480,7 +481,17 @@ export function handleParseErrors(err, req, res, next) {
     }
     res.status(httpStatus);
     res.json({ code: err.code, error: err.message });
-    log.error('Parse error: ', err);
+    if (err.code === Parse.Error.USERNAME_TAKEN) {
+      if (usernameAlreadyExistsLevel !== 'silent') {
+        const loggerMethod =
+          typeof log[usernameAlreadyExistsLevel] === 'function'
+            ? log[usernameAlreadyExistsLevel].bind(log)
+            : log.error.bind(log);
+        loggerMethod('Parse error: ', err);
+      }
+    } else {
+      log.error('Parse error: ', err);
+    }
   } else if (err.status && err.message) {
     res.status(err.status);
     res.json({ error: err.message });

types/Options/index.d.ts

@@ -47,6 +47,7 @@ export interface ParseServerOptions {
     verbose?: boolean;
     logLevel?: string;
     logLevels?: LogLevels;
+    logEvents?: LogEvents;
     maxLogFiles?: NumberOrString;
     silent?: boolean;
     databaseURI: string;
@@ -298,4 +299,7 @@ export interface LogLevels {
     cloudFunctionSuccess?: string;
     cloudFunctionError?: string;
 }
+export interface LogEvents {
+    usernameAlreadyExists?: string;
+}
 export {};