From ede13852668ac5d3610a273720f1322b64031cc7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Daniel=20Granh=C3=A3o?= Date: Fri, 27 Feb 2026 12:30:08 +0000 Subject: [PATCH 1/3] Fix test assertions for exclusive lock and schema version Update signSetLock calls to include the exclusive parameter and add SchemaVersion field to expected StoredRecord values. --- store/test_utils.go | 6 +++--- sync_server_test.go | 16 ++++++++-------- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/store/test_utils.go b/store/test_utils.go index 5570cf8..7eff56f 100644 --- a/store/test_utils.go +++ b/store/test_utils.go @@ -25,8 +25,8 @@ func (s *StoreTest) TestAddRecords(t *testing.T, storage SyncStorage) { records, err := storage.ListChanges(context.Background(), testStoreID, 0) require.NoError(t, err, "failed to call list changes") require.Equal(t, records, []StoredRecord{ - {Id: "a1", Data: []byte("data1"), Revision: 1}, - {Id: "a2", Data: []byte("data2"), Revision: 2}, + {Id: "a1", Data: []byte("data1"), Revision: 1, SchemaVersion: "0.0.1"}, + {Id: "a2", Data: []byte("data2"), Revision: 2, SchemaVersion: "0.0.1"}, }) // Test different store with same id @@ -49,7 +49,7 @@ func (s *StoreTest) TestUpdateRecords(t *testing.T, storage SyncStorage) { records, err := storage.ListChanges(context.Background(), testStoreID, 0) require.NoError(t, err, "failed to call list changes") require.Equal(t, records, []StoredRecord{ - {Id: "a1", Data: []byte("data2"), Revision: 2}, + {Id: "a1", Data: []byte("data2"), Revision: 2, SchemaVersion: "0.0.1"}, }) } diff --git a/sync_server_test.go b/sync_server_test.go index 90ba826..ca6ef88 100644 --- a/sync_server_test.go +++ b/sync_server_test.go @@ -269,8 +269,8 @@ func server(ctx context.Context, config *config.Config) (proto.SyncerClient, fun return client, closer } -func signSetLock(t *testing.T, privateKey *btcec.PrivateKey, lockName, instanceID string, acquire bool, requestTime uint32) string { - toSign := fmt.Sprintf("%v-%v-%v-%v", lockName, instanceID, acquire, requestTime) +func signSetLock(t *testing.T, privateKey *btcec.PrivateKey, lockName, instanceID string, acquire bool, exclusive bool, requestTime uint32) string { + toSign := fmt.Sprintf("%v-%v-%v-%v-%v", lockName, instanceID, acquire, exclusive, requestTime) signature, err := middleware.SignMessage(privateKey, []byte(toSign)) require.NoError(t, err) return signature @@ -296,7 +296,7 @@ func TestSetLock_EmptyLockName(t *testing.T) { InstanceId: instanceID, Acquire: true, RequestTime: requestTime, - Signature: signSetLock(t, privateKey, "", instanceID, true, requestTime), + Signature: signSetLock(t, privateKey, "", instanceID, true, false, requestTime), }) require.Error(t, err) require.Equal(t, codes.InvalidArgument, status.Code(err)) @@ -317,7 +317,7 @@ func TestSetLock_LockNameTooLong(t *testing.T) { InstanceId: instanceID, Acquire: true, RequestTime: requestTime, - Signature: signSetLock(t, privateKey, longName, instanceID, true, requestTime), + Signature: signSetLock(t, privateKey, longName, instanceID, true, false, requestTime), }) require.Error(t, err) require.Equal(t, codes.InvalidArgument, status.Code(err)) @@ -336,7 +336,7 @@ func TestSetLock_InvalidInstanceID(t *testing.T) { InstanceId: "not-a-uuid", Acquire: true, RequestTime: requestTime, - Signature: signSetLock(t, privateKey, "test_lock", "not-a-uuid", true, requestTime), + Signature: signSetLock(t, privateKey, "test_lock", "not-a-uuid", true, false, requestTime), }) require.Error(t, err) require.Equal(t, codes.InvalidArgument, status.Code(err)) @@ -356,7 +356,7 @@ func TestSetLock_StaleRequestTime(t *testing.T) { InstanceId: instanceID, Acquire: true, RequestTime: staleTime, - Signature: signSetLock(t, privateKey, "test_lock", instanceID, true, staleTime), + Signature: signSetLock(t, privateKey, "test_lock", instanceID, true, false, staleTime), }) require.Error(t, err) require.Equal(t, codes.InvalidArgument, status.Code(err)) @@ -379,7 +379,7 @@ func TestSetLock_TTLCapped(t *testing.T) { Acquire: true, TtlSeconds: &hugeTTL, RequestTime: requestTime, - Signature: signSetLock(t, privateKey, "test_lock", instanceID, true, requestTime), + Signature: signSetLock(t, privateKey, "test_lock", instanceID, true, false, requestTime), }) require.NoError(t, err) @@ -410,7 +410,7 @@ func TestSetLock_TTLExpiration(t *testing.T) { Acquire: true, TtlSeconds: &smallTTL, RequestTime: requestTime, - Signature: signSetLock(t, privateKey, "test_lock", instanceID, true, requestTime), + Signature: signSetLock(t, privateKey, "test_lock", instanceID, true, false, requestTime), }) require.NoError(t, err) From db7d2e58d2c0c84bf5d8049108e99f7f4e5aacec Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Daniel=20Granh=C3=A3o?= Date: Fri, 27 Feb 2026 12:30:12 +0000 Subject: [PATCH 2/3] Add Prometheus metrics infrastructure and gRPC interceptors - Add metrics HTTP server on configurable port (default 9091) - Register gRPC server metrics (unary + stream interceptors) - Define custom gauges/counters/histograms for sync observability - Update Go toolchain and bump dependencies - Configure Fly.io metrics endpoint --- config/config.go | 1 + fly.toml | 6 ++- go.mod | 35 +++++++++++------ go.sum | 96 +++++++++++++++++++++++++++++++++------------- main.go | 26 +++++++++++++ metrics/metrics.go | 34 ++++++++++++++++ 6 files changed, 159 insertions(+), 39 deletions(-) create mode 100644 metrics/metrics.go diff --git a/config/config.go b/config/config.go index 4a35c0a..2bad1e2 100644 --- a/config/config.go +++ b/config/config.go @@ -31,6 +31,7 @@ func (c *Certificate) UnmarshalEnvironmentValue(data string) error { type Config struct { GrpcListenAddress string `env:"GRPC_LISTEN_ADDRESS,default=0.0.0.0:8080"` GrpcWebListenAddress string `env:"GRPC_WEB_LISTEN_ADDRESS,default=0.0.0.0:8081"` + MetricsListenAddress string `env:"METRICS_LISTEN_ADDRESS,default=0.0.0.0:9091"` SQLiteDirPath string `env:"SQLITE_DIR_PATH,default=db"` PgDatabaseUrl string `env:"DATABASE_URL"` CACert *Certificate `env:"CA_CERT"` diff --git a/fly.toml b/fly.toml index 783a208..f2313b4 100644 --- a/fly.toml +++ b/fly.toml @@ -40,8 +40,12 @@ soft_limit = 500 [[services.ports]] handlers = ["tls", "http"] port = 442 - + [services.concurrency] type = "connections" hard_limit = 3000 soft_limit = 1500 + +[metrics] + port = 9091 + path = "/metrics" diff --git a/go.mod b/go.mod index 11aa089..0e6e877 100644 --- a/go.mod +++ b/go.mod @@ -1,8 +1,8 @@ module github.com/breez/data-sync -go 1.22 +go 1.23.0 -toolchain go1.23.1 +toolchain go1.24.5 require ( github.com/Netflix/go-env v0.0.0-20220526054621-78278af1949d @@ -10,23 +10,29 @@ require ( github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 github.com/golang-migrate/migrate/v4 v4.17.1 github.com/google/uuid v1.6.0 + github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus v1.1.0 + github.com/improbable-eng/grpc-web v0.15.0 github.com/jackc/pgx/v5 v5.5.5 github.com/mattn/go-sqlite3 v1.14.22 - github.com/stretchr/testify v1.9.0 + github.com/prometheus/client_golang v1.23.2 + github.com/rs/cors v1.11.1 + github.com/stretchr/testify v1.11.1 github.com/tv42/zbase32 v0.0.0-20220222190657-f76a9fc892fa google.golang.org/grpc v1.65.0 - google.golang.org/protobuf v1.34.1 + google.golang.org/protobuf v1.36.8 ) require ( + github.com/beorn7/perks v1.0.1 // indirect github.com/cenkalti/backoff/v4 v4.1.2 // indirect + github.com/cespare/xxhash/v2 v2.3.0 // indirect github.com/davecgh/go-spew v1.1.1 // indirect github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f // indirect github.com/gobuffalo/here v0.6.0 // indirect + github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.1.0 // indirect github.com/hashicorp/errwrap v1.1.0 // indirect github.com/hashicorp/go-multierror v1.1.1 // indirect - github.com/improbable-eng/grpc-web v0.15.0 // indirect github.com/jackc/chunkreader/v2 v2.0.1 // indirect github.com/jackc/pgconn v1.14.3 // indirect github.com/jackc/pgerrcode v0.0.0-20220416144525-469b46aa5efa // indirect @@ -37,18 +43,23 @@ require ( github.com/jackc/pgtype v1.14.0 // indirect github.com/jackc/pgx/v4 v4.18.2 // indirect github.com/jackc/puddle/v2 v2.2.1 // indirect - github.com/klauspost/compress v1.15.11 // indirect + github.com/klauspost/compress v1.18.0 // indirect + github.com/kylelemons/godebug v1.1.0 // indirect github.com/lib/pq v1.10.9 // indirect github.com/markbates/pkger v0.17.1 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect + github.com/prometheus/client_model v0.6.2 // indirect + github.com/prometheus/common v0.66.1 // indirect + github.com/prometheus/procfs v0.16.1 // indirect github.com/rogpeppe/go-internal v1.13.1 // indirect - github.com/rs/cors v1.11.1 // indirect go.uber.org/atomic v1.7.0 // indirect - golang.org/x/crypto v0.23.0 // indirect - golang.org/x/net v0.25.0 // indirect - golang.org/x/sync v0.7.0 // indirect - golang.org/x/sys v0.22.0 // indirect - golang.org/x/text v0.16.0 // indirect + go.yaml.in/yaml/v2 v2.4.2 // indirect + golang.org/x/crypto v0.41.0 // indirect + golang.org/x/net v0.43.0 // indirect + golang.org/x/sync v0.16.0 // indirect + golang.org/x/sys v0.35.0 // indirect + golang.org/x/text v0.28.0 // indirect google.golang.org/genproto/googleapis/rpc v0.0.0-20240528184218-531527333157 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect nhooyr.io/websocket v1.8.6 // indirect diff --git a/go.sum b/go.sum index 6fb3529..ebf1987 100644 --- a/go.sum +++ b/go.sum @@ -32,6 +32,7 @@ github.com/aws/aws-sdk-go v1.27.0/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN github.com/aws/aws-sdk-go-v2 v0.18.0/go.mod h1:JWVYvqSMppoMJC0x5wdwiImzgXTI9FuZwxzkQq9wy+g= github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs= github.com/btcsuite/btcd/btcec/v2 v2.3.3 h1:6+iXlDKE8RMtKsvK0gshlXIuPbyWM/h84Ensb7o3sC0= @@ -39,13 +40,14 @@ github.com/btcsuite/btcd/btcec/v2 v2.3.3/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 h1:59Kx4K6lzOW5w6nFlA0v5+lk/6sjybR934QNHSJZPTQ= github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc= github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ= -github.com/cenkalti/backoff v2.2.1+incompatible h1:tNowT99t7UNflLxfYYSlKYsBpXdEet03Pg2g16Swow4= github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM= github.com/cenkalti/backoff/v4 v4.1.1/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw= github.com/cenkalti/backoff/v4 v4.1.2 h1:6Yo7N8UP2K6LWZnW94DLVSSrbobcWdVzAYOisuDPIFo= github.com/cenkalti/backoff/v4 v4.1.2/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw= github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs= +github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= github.com/clbanning/x2j v0.0.0-20191024224557-825249438eec/go.mod h1:jMjuTZXRI4dUb/I5gc9Hdhagfvm9+RyrPryS/auMzxE= github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc= @@ -95,7 +97,9 @@ github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVB github.com/franela/goreq v0.0.0-20171204163338-bcd34c9993f8/go.mod h1:ZhphrRTfi2rbfLwlschooIH4+wKKDR4Pdxhh+TRoA20= github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04= +github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE= github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI= +github.com/gin-gonic/gin v1.6.3 h1:ahKqKTFpO5KTPHxWZjEdPScmYaGtLo8Y4DMHoEsnp14= github.com/gin-gonic/gin v1.6.3/go.mod h1:75u5sXoLsGZoRN5Sgbi1eraJ4GU3++wFwWzhwvtwp4M= github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8= github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= @@ -106,15 +110,21 @@ github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk= github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A= github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4= +github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q= github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8= +github.com/go-playground/universal-translator v0.17.0 h1:icxd5fm+REJzpZx7ZfpaD876Lmtgy7VtROAbHHXk8no= github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+Scu5vgOQjsIJAF8j9muTVoKLVtA= +github.com/go-playground/validator/v10 v10.2.0 h1:KgJ0snyC2R9VXYN2rneOtQcw5aHQB1Vv0sFl1UcHBOY= github.com/go-playground/validator/v10 v10.2.0/go.mod h1:uOYAAleCW8F/7oMFd6aG0GOhaH6EGOAJShg8Id5JGkI= github.com/go-sql-driver/mysql v1.4.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w= github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY= github.com/gobuffalo/here v0.6.0 h1:hYrd0a6gDmWxBM4TnrGw8mQg24iSVoIkHEk7FodQcBI= github.com/gobuffalo/here v0.6.0/go.mod h1:wAG085dHOYqUpf+Ap+WOdrPTp5IYcDAs/x7PLa8Y5fM= +github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee h1:s+21KNqlpePfkah2I+gwHF8xmJWRjooY+5248k6m4A0= github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee/go.mod h1:L0fX3K22YWvt/FAX9NnzrNzcI4wNYi9Yku4O0LKYflo= +github.com/gobwas/pool v0.2.0 h1:QEmUOlnSjWtnpRGHF3SauEiOsy82Cup83Vf2LcMlnc8= github.com/gobwas/pool v0.2.0/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw= +github.com/gobwas/ws v1.0.2 h1:CoAavW/wd/kulfZmSIBt6p24n4j7tHgNVCjsfHVNUbo= github.com/gobwas/ws v1.0.2/go.mod h1:szmBTxLgaFppYjEmNtny/v3w89xOydFnnZMcgRRu/EM= github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw= github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM= @@ -143,6 +153,8 @@ github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvq github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8= github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= +github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek= +github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps= github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ= github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ= @@ -151,8 +163,8 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= -github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI= -github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8= +github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU= github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg= github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI= github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= @@ -163,9 +175,14 @@ github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51 github.com/gorilla/mux v1.6.2/go.mod 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h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII= github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o= -github.com/rs/cors v1.7.0 h1:+88SsELBHx5r+hZ8TCkggzSstaWNbDvThkVK8H6f9ik= github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU= github.com/rs/cors v1.11.1 h1:eU3gRzXLRK57F5rKMGMZURNdIG4EoAmX8k94r9wXWHA= github.com/rs/cors v1.11.1/go.mod h1:XyqrcTp5zjWr1wsJ8PIRZssZ8b/WMcMf71DJnit4EMU= @@ -428,12 +465,14 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA= github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= -github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg= -github.com/stretchr/testify v1.9.0/go.mod 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github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0= @@ -450,6 +489,8 @@ go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ= go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ= go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw= go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc= +go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto= +go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE= go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0= go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4= go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU= @@ -457,6 +498,8 @@ go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9E go.uber.org/zap v1.9.1/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q= go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q= go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM= +go.yaml.in/yaml/v2 v2.4.2 h1:DzmwEr2rDGHl7lsFgAHxmNz/1NlQ7xLIrlN2h5d1eGI= +go.yaml.in/yaml/v2 v2.4.2/go.mod h1:081UH+NErpNdqlCXm3TtEran0rJZGxAYx9hb/ELlsPU= golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= @@ -469,8 +512,8 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh golang.org/x/crypto v0.0.0-20201203163018-be400aefbc4c/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I= golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= -golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI= -golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8= +golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4= +golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc= golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= golang.org/x/exp v0.0.0-20200331195152-e8c3332aa8e5/go.mod h1:4M0jN8W1tt0AVLNr8HDosyJCDCDuyL9N9+3m7wDWgKw= @@ -485,8 +528,8 @@ golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCc golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc= golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg= golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg= -golang.org/x/mod v0.18.0 h1:5+9lSbEzPSdWkH32vYPBwEpX8KwDbM52Ud9xBUvNlb0= -golang.org/x/mod v0.18.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c= +golang.org/x/mod v0.26.0 h1:EGMPT//Ezu+ylkCijjPc+f4Aih7sZvaAr+O3EHBxvZg= +golang.org/x/mod v0.26.0/go.mod h1:/j6NAhSk8iQ723BGAUyoAcn7SlD7s15Dp9Nd/SfeaFQ= golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= @@ -507,8 +550,8 @@ golang.org/x/net v0.0.0-20200421231249-e086a090c8fd/go.mod h1:qpuaurCH72eLCgpAm/ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA= golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= -golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac= -golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM= +golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE= +golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg= golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw= golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= @@ -517,8 +560,8 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= -golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M= -golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk= +golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw= +golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA= golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= @@ -551,8 +594,8 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI= -golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA= +golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI= +golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k= golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw= golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= @@ -560,8 +603,8 @@ golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk= golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= -golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4= -golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI= +golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng= +golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU= golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= @@ -580,8 +623,8 @@ golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtn golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= golang.org/x/tools v0.0.0-20200207183749-b753a1ba74fa/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= -golang.org/x/tools v0.22.0 h1:gqSGLZqv+AI9lIQzniJ0nZDRG5GBPsSi+DRNHWNz6yA= -golang.org/x/tools v0.22.0/go.mod h1:aCwcsjqvq7Yqt6TNyX7QMU2enbQ/Gt0bo6krSeEri+c= +golang.org/x/tools v0.35.0 h1:mBffYraMEf7aa0sB+NuKnuCy8qI/9Bughn8dC2Gu5r0= +golang.org/x/tools v0.35.0/go.mod h1:NKdj5HkL/73byiZSJjqJgKn3ep7KjFkBOkR/Hps3VPw= golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= @@ -627,8 +670,8 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4= google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= -google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg= -google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos= +google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc= +google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU= gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= @@ -650,6 +693,7 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU= gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/main.go b/main.go index 0787cb1..73dd47c 100644 --- a/main.go +++ b/main.go @@ -8,7 +8,10 @@ import ( "github.com/breez/data-sync/config" "github.com/breez/data-sync/proto" + grpcprom "github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus" "github.com/improbable-eng/grpc-web/go/grpcweb" + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promhttp" "github.com/rs/cors" "google.golang.org/grpc" "google.golang.org/grpc/keepalive" @@ -32,12 +35,24 @@ func main() { syncServer.Start(quitChan) s := CreateServer(config, grpcListener, syncServer) RunWebProxy(s, config) + RunMetricsServer(config) log.Printf("Server listening at %s", config.GrpcListenAddress) if err := s.Serve(grpcListener); err != nil { log.Fatalf("failed to serve: %v", err) } } +func RunMetricsServer(config *config.Config) { + mux := http.NewServeMux() + mux.Handle("/metrics", promhttp.Handler()) + log.Printf("Starting metrics server on %s", config.MetricsListenAddress) + go func() { + if err := http.ListenAndServe(config.MetricsListenAddress, mux); err != nil { + log.Fatalf("Failed to start metrics server: %v", err) + } + }() +} + func RunWebProxy(grpcServer *grpc.Server, config *config.Config) { wrappedGrpc := grpcweb.WrapServer(grpcServer, grpcweb.WithOriginFunc(func(origin string) bool { @@ -79,6 +94,14 @@ func RunWebProxy(grpcServer *grpc.Server, config *config.Config) { } func CreateServer(config *config.Config, listener net.Listener, syncServer proto.SyncerServer) *grpc.Server { + srvMetrics := grpcprom.NewServerMetrics( + grpcprom.WithServerHandlingTimeHistogram(), + ) + // Intentionally ignoring error: concurrent tests re-register metrics on the + // default registry, causing MustRegister to panic. Safe to skip in production + // (single registration) and in tests (duplicate is harmless). + _ = prometheus.Register(srvMetrics) + s := grpc.NewServer( grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{ MinTime: time.Second * 5, @@ -88,7 +111,10 @@ func CreateServer(config *config.Config, listener net.Listener, syncServer proto Time: time.Second * 10, Timeout: time.Second * 5, }), + grpc.ChainUnaryInterceptor(srvMetrics.UnaryServerInterceptor()), + grpc.ChainStreamInterceptor(srvMetrics.StreamServerInterceptor()), ) proto.RegisterSyncerServer(s, syncServer) + srvMetrics.InitializeMetrics(s) return s } diff --git a/metrics/metrics.go b/metrics/metrics.go new file mode 100644 index 0000000..540d6a4 --- /dev/null +++ b/metrics/metrics.go @@ -0,0 +1,34 @@ +package metrics + +import ( + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promauto" +) + +var ( + ActiveSubscriptions = promauto.NewGauge(prometheus.GaugeOpts{ + Name: "sync_active_subscriptions", + Help: "Number of open ListenChanges streams.", + }) + + DistinctSubscribedUsers = promauto.NewGauge(prometheus.GaugeOpts{ + Name: "sync_distinct_subscribed_users", + Help: "Number of unique users with at least one open stream.", + }) + + NotificationsSent = promauto.NewCounter(prometheus.CounterOpts{ + Name: "sync_notifications_sent_total", + Help: "Total notifications successfully delivered to subscriber channels.", + }) + + NotificationsDropped = promauto.NewCounter(prometheus.CounterOpts{ + Name: "sync_notifications_dropped_total", + Help: "Total notifications dropped due to full subscriber buffer.", + }) + + MsgChanDelay = promauto.NewHistogram(prometheus.HistogramOpts{ + Name: "sync_msgchan_delay_seconds", + Help: "Time messages wait in the eventsManager msgChan before processing.", + Buckets: []float64{0.0001, 0.0005, 0.001, 0.005, 0.01, 0.05, 0.1, 0.5, 1.0, 5.0}, + }) +) From eec5ec246e00daa459dd65f389ea39f3c029bb9e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Daniel=20Granh=C3=A3o?= Date: Fri, 27 Feb 2026 12:30:23 +0000 Subject: [PATCH 3/3] Improve eventsManager observability and resilience - Instrument subscriptions, notifications, and msgChan delay with Prometheus metrics - Use non-blocking sends to avoid stalling on full subscriber buffers - Add periodic stats logging (1-minute ticker) - Improve log messages with subscription counts - Add metrics integration tests --- metrics_test.go | 133 +++++++++++++++++++++++++++++++++++++++++++++++ syncer_server.go | 58 ++++++++++++++++----- 2 files changed, 179 insertions(+), 12 deletions(-) create mode 100644 metrics_test.go diff --git a/metrics_test.go b/metrics_test.go new file mode 100644 index 0000000..29a476d --- /dev/null +++ b/metrics_test.go @@ -0,0 +1,133 @@ +package main + +import ( + "context" + "fmt" + "os" + "testing" + "time" + + "github.com/breez/data-sync/metrics" + "github.com/breez/data-sync/middleware" + "github.com/breez/data-sync/proto" + "github.com/btcsuite/btcd/btcec/v2" + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/testutil" + "github.com/stretchr/testify/require" +) + +func TestMetrics(t *testing.T) { + cfg, privateKey := testParameters(t) + privateKey2, err := btcec.NewPrivateKey() + require.NoError(t, err) + + client, closer := server(context.Background(), cfg) + defer closer() + defer os.RemoveAll(cfg.SQLiteDirPath) + + // Baseline + requireMetricValue(t, metrics.ActiveSubscriptions, 0) + requireMetricValue(t, metrics.DistinctSubscribedUsers, 0) + requireMetricValue(t, metrics.NotificationsSent, 0) + + // --- Single subscriber --- + ctx1, cancel1 := context.WithCancel(context.Background()) + stream1 := openListenChangesCtx(t, ctx1, privateKey, client) + _, err = stream1.Recv() // initial empty notification + require.NoError(t, err) + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.ActiveSubscriptions, 1) + requireMetricValue(t, metrics.DistinctSubscribedUsers, 1) + + // --- Second subscriber, same user --- + ctx2, cancel2 := context.WithCancel(context.Background()) + stream2 := openListenChangesCtx(t, ctx2, privateKey, client) + _, err = stream2.Recv() + require.NoError(t, err) + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.ActiveSubscriptions, 2) + requireMetricValue(t, metrics.DistinctSubscribedUsers, 1) // still 1 distinct user + + // --- Third subscriber, different user --- + ctx3, cancel3 := context.WithCancel(context.Background()) + stream3 := openListenChangesCtx(t, ctx3, privateKey2, client) + _, err = stream3.Recv() + require.NoError(t, err) + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.ActiveSubscriptions, 3) + requireMetricValue(t, metrics.DistinctSubscribedUsers, 2) // now 2 distinct users + + // --- SetRecord for user1 → notification sent to both of user1's streams --- + _, err = client.SetRecord(context.Background(), createSetRecordRequest(t, privateKey, &proto.Record{ + Id: "metrics-test-1", + Revision: 0, + Data: []byte("hello"), + })) + require.NoError(t, err) + _, err = stream1.Recv() + require.NoError(t, err) + _, err = stream2.Recv() + require.NoError(t, err) + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.NotificationsSent, 2) // 2 streams for user1 + + // --- Unsubscribe one of user1's streams --- + cancel1() + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.ActiveSubscriptions, 2) + requireMetricValue(t, metrics.DistinctSubscribedUsers, 2) // user1 still has stream2 + + // --- Unsubscribe user1's last stream --- + cancel2() + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.ActiveSubscriptions, 1) + requireMetricValue(t, metrics.DistinctSubscribedUsers, 1) // only user2 remains + + // --- Notifications for user2 (still has stream3) --- + _, err = client.SetRecord(context.Background(), createSetRecordRequest(t, privateKey2, &proto.Record{ + Id: "metrics-test-2", + Revision: 0, + Data: []byte("user2-data"), + })) + require.NoError(t, err) + _, err = stream3.Recv() + require.NoError(t, err) + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.NotificationsSent, 3) // 2 earlier + 1 now + + // --- Unsubscribe last stream --- + cancel3() + time.Sleep(100 * time.Millisecond) + + requireMetricValue(t, metrics.ActiveSubscriptions, 0) + requireMetricValue(t, metrics.DistinctSubscribedUsers, 0) + + // --- msgChan delay histogram should have observations --- + delayCount := testutil.CollectAndCount(metrics.MsgChanDelay) + require.Greater(t, delayCount, 0, "msgchan_delay histogram should have observations") +} + +func openListenChangesCtx(t *testing.T, ctx context.Context, privateKey *btcec.PrivateKey, client proto.SyncerClient) proto.Syncer_ListenChangesClient { + requestTime := uint32(time.Now().Unix()) + toSign := fmt.Sprintf("%v", requestTime) + signature, err := middleware.SignMessage(privateKey, []byte(toSign)) + require.NoError(t, err) + stream, err := client.ListenChanges(ctx, &proto.ListenChangesRequest{ + RequestTime: requestTime, + Signature: signature, + }) + require.NoError(t, err) + return stream +} + +func requireMetricValue(t *testing.T, c prometheus.Collector, expected float64) { + t.Helper() + require.Equal(t, expected, testutil.ToFloat64(c)) +} diff --git a/syncer_server.go b/syncer_server.go index 52b1b12..9b45c91 100644 --- a/syncer_server.go +++ b/syncer_server.go @@ -9,12 +9,13 @@ import ( "time" "github.com/breez/data-sync/config" - "github.com/google/uuid" + "github.com/breez/data-sync/metrics" "github.com/breez/data-sync/middleware" "github.com/breez/data-sync/proto" "github.com/breez/data-sync/store" "github.com/breez/data-sync/store/postgres" "github.com/breez/data-sync/store/sqlite" + "github.com/google/uuid" "google.golang.org/grpc/codes" "google.golang.org/grpc/status" ) @@ -276,34 +277,47 @@ type subscription struct { eventsChan chan *proto.Notification } +type timestampedMsg struct { + enqueuedAt time.Time + payload any +} + type eventsManager struct { sync.Mutex globalIDs int64 streams map[string][]*subscription - msgChan chan interface{} + msgChan chan timestampedMsg } func newEventsManager() *eventsManager { return &eventsManager{ globalIDs: 0, streams: make(map[string][]*subscription), - msgChan: make(chan interface{}), + msgChan: make(chan timestampedMsg), } } func (c *eventsManager) start(quitChan chan struct{}) { go func() { + statsTicker := time.NewTicker(1 * time.Minute) + defer statsTicker.Stop() for { - log.Printf("eventsManager select started\n") select { - case msg := <-c.msgChan: + case tmsg := <-c.msgChan: + metrics.MsgChanDelay.Observe(time.Since(tmsg.enqueuedAt).Seconds()) + msg := tmsg.payload + if s, ok := msg.(*subscription); ok { + wasAbsent := len(c.streams[s.pubkey]) == 0 c.streams[s.pubkey] = append(c.streams[s.pubkey], s) - log.Printf("eventsManager: new subscription for user %s: id - %d\n", s.pubkey, s.id) + metrics.ActiveSubscriptions.Inc() + if wasAbsent { + metrics.DistinctSubscribedUsers.Inc() + } + log.Printf("eventsManager: new subscription for user %s: id - %d (user now has %d subscriptions)\n", s.pubkey, s.id, len(c.streams[s.pubkey])) } if s, ok := msg.(*unsubscribe); ok { - log.Printf("eventsManager: unsubscribing user %s: id - %d\n", s.pubkey, s.id) var newSubs []*subscription for _, sub := range c.streams[s.pubkey] { if sub.id != s.id { @@ -316,24 +330,44 @@ func (c *eventsManager) start(quitChan chan struct{}) { if len(newSubs) > 0 { c.streams[s.pubkey] = newSubs } + metrics.ActiveSubscriptions.Dec() + if len(newSubs) == 0 { + metrics.DistinctSubscribedUsers.Dec() + } + log.Printf("eventsManager: unsubscribed user %s: id - %d (user now has %d subscriptions)\n", s.pubkey, s.id, len(newSubs)) } if s, ok := msg.(*notifyChange); ok { log.Printf("eventsManager: notifying change for user %v\n", s.pubkey) for _, sub := range c.streams[s.pubkey] { - sub.eventsChan <- &proto.Notification{ClientId: s.clientId} + select { + case sub.eventsChan <- &proto.Notification{ClientId: s.clientId}: + metrics.NotificationsSent.Inc() + default: + metrics.NotificationsDropped.Inc() + log.Printf("eventsManager: notification buffer full for user %s: id - %d, dropping notification\n", s.pubkey, sub.id) + } + } + } + case <-statsTicker.C: + totalSubs := 0 + multiSubUsers := 0 + for _, subs := range c.streams { + totalSubs += len(subs) + if len(subs) > 1 { + multiSubUsers++ } } + log.Printf("eventsManager stats: total_subscriptions=%d, distinct_users=%d, users_with_multiple_subs=%d\n", totalSubs, len(c.streams), multiSubUsers) case <-quitChan: log.Printf("eventsManager: quitChan received\n") return } - log.Printf("eventsManager select finished. number of subscriptions = %v\n", len(c.streams)) } }() } func (c *eventsManager) notifyChange(pubkey string, clientId *string) { - c.msgChan <- ¬ifyChange{pubkey: pubkey, clientId: clientId} + c.msgChan <- timestampedMsg{enqueuedAt: time.Now(), payload: ¬ifyChange{pubkey: pubkey, clientId: clientId}} } func (c *eventsManager) subscribe(pubkey string) *subscription { @@ -343,12 +377,12 @@ func (c *eventsManager) subscribe(pubkey string) *subscription { s := &subscription{pubkey: pubkey, eventsChan: eventsChan, id: c.globalIDs} c.Unlock() - c.msgChan <- s + c.msgChan <- timestampedMsg{enqueuedAt: time.Now(), payload: s} log.Printf("New connection for user %s: id - %d\n", pubkey, s.id) return s } func (c *eventsManager) unsubscribe(pubkey string, id int64) { - c.msgChan <- &unsubscribe{pubkey: pubkey, id: id} + c.msgChan <- timestampedMsg{enqueuedAt: time.Now(), payload: &unsubscribe{pubkey: pubkey, id: id}} log.Printf("Removing connection for user %s - id %d\n", pubkey, id) }