diff --git a/.gitignore b/.gitignore index ebfe903..b975a7b 100644 --- a/.gitignore +++ b/.gitignore @@ -1,2 +1,3 @@ *.rdb testdata/*/ +.idea/ diff --git a/example/otel/README.md b/example/otel/README.md new file mode 100644 index 0000000..60d4d12 --- /dev/null +++ b/example/otel/README.md @@ -0,0 +1,9 @@ +### OpenTelemetry Example +Prints spans and metrics to the console. +#### To Run: +- `docker-compose up -d` +- `go run .` + +When you're finished, be sure to run `docker-compose down` to shutdown +the redis server. + diff --git a/example/otel/docker-compose.yml b/example/otel/docker-compose.yml new file mode 100644 index 0000000..c2d7f1d --- /dev/null +++ b/example/otel/docker-compose.yml @@ -0,0 +1,8 @@ +version: '3' +services: + redis-server: + image: redis + ports: + - "6379:6379" + redis-cli: + image: redis diff --git a/example/otel/example-client.go b/example/otel/example-client.go new file mode 100644 index 0000000..56b830b --- /dev/null +++ b/example/otel/example-client.go @@ -0,0 +1,79 @@ +package main + +import ( + "context" + "github.com/go-redis/redis/v8" + "github.com/go-redis/redis/v8/redisext" + "go.opentelemetry.io/otel/api/global" + meterStdout "go.opentelemetry.io/otel/exporters/metric/stdout" + traceStdout "go.opentelemetry.io/otel/exporters/trace/stdout" + "go.opentelemetry.io/otel/sdk/metric/controller/push" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + "log" + "sync" + "time" +) + +func main() { + <-time.After(1 * time.Second) + + rdb := redis.NewClient(&redis.Options{ + Addr: ":6379", + }) + + meterExporter, err := meterStdout.NewExportPipeline(meterStdout.Config{PrettyPrint: true}, + push.WithPeriod(1*time.Second)) + if err != nil { + log.Fatal(err.Error()) + } else { + global.SetMeterProvider(meterExporter.Provider()) + } + + traceExporter, err := traceStdout.NewExporter(traceStdout.Options{ + PrettyPrint: true, + }) + if err != nil { + log.Fatal(err.Error()) + } + + if tp, err := sdktrace.NewProvider( + sdktrace.WithSyncer(traceExporter), + sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}), + ); err != nil { + log.Fatal(err.Error()) + } else { + global.SetTraceProvider(tp) + } + + rdb.AddHook(redisext.OpenTelemetryHook{}) + + ctx := context.Background() + tracer := global.Tracer("Example tracer") + ctx, span := tracer.Start(ctx, "start-test-span") + + rdb.Set(ctx, "First value", "value_1", 0) + + rdb.Set(ctx, "Second value", "value_2", 0) + + var group sync.WaitGroup + + for i := 0; i < 20; i++ { + group.Add(1) + go func() { + defer group.Done() + val := rdb.Get(ctx, "Second value").Val() + if val != "value_2" { + log.Fatalf("val was not set. expected: %s but got: %s", "value_2", val) + } + }() + } + group.Wait() + + rdb.Del(ctx, "First value") + rdb.Del(ctx, "Second value") + + // Wait some time to allow spans to export + <-time.After(5 * time.Second) + span.End() +} + diff --git a/example/otel/go.mod b/example/otel/go.mod new file mode 100644 index 0000000..884caab --- /dev/null +++ b/example/otel/go.mod @@ -0,0 +1,10 @@ +module github.com/go-redis/redis/example + +go 1.14 + +require ( + github.com/go-redis/redis/v8 v8.0.0-beta.5 + go.opentelemetry.io/otel v0.7.0 +) + +replace github.com/go-redis/redis/v8 => ../../ diff --git a/example/otel/go.sum b/example/otel/go.sum new file mode 100644 index 0000000..0bd818e --- /dev/null +++ b/example/otel/go.sum @@ -0,0 +1,138 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= +github.com/DataDog/sketches-go v0.0.0-20190923095040-43f19ad77ff7 h1:qELHH0AWCvf98Yf+CNIJx9vOZOfHFDDzgDRYsnNk/vs= +github.com/DataDog/sketches-go 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h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= +gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/internal/instruments.go b/internal/instruments.go new file mode 100644 index 0000000..5380ca2 --- /dev/null +++ b/internal/instruments.go @@ -0,0 +1,32 @@ +package internal + +import ( + "go.opentelemetry.io/otel/api/global" + "go.opentelemetry.io/otel/api/metric" +) + +var ( + // Count of write commands performed + WritesCounter metric.Int64Counter + // Count of new connections + NewConnectionsCounter metric.Int64Counter +) + +func init() { + defer func() { + if r := recover(); r != nil { + Logger.Printf("Error creating meter github.com/go-redis/redis for Instruments", r) + } + }() + + meter := metric.Must(global.Meter("github.com/go-redis/redis")) + + WritesCounter = meter.NewInt64Counter("redis.writes", + metric.WithDescription("the number of writes initiated"), + ) + + NewConnectionsCounter = meter.NewInt64Counter("redis.new_connections", + metric.WithDescription("the number of connections created"), + ) +} + diff --git a/internal/pool/conn.go b/internal/pool/conn.go index ea1b229..9c243c6 100644 --- a/internal/pool/conn.go +++ b/internal/pool/conn.go @@ -93,6 +93,8 @@ func (cn *Conn) WithWriter( return internal.RecordError(ctx, err) } + internal.WritesCounter.Add(ctx, 1) + return nil }) } diff --git a/internal/pool/pool.go b/internal/pool/pool.go index cabcba1..a142295 100644 --- a/internal/pool/pool.go +++ b/internal/pool/pool.go @@ -179,6 +179,7 @@ func (p *ConnPool) dialConn(ctx context.Context, pooled bool) (*Conn, error) { return nil, err } + internal.NewConnectionsCounter.Add(ctx, 1) cn := NewConn(netConn) cn.pooled = pooled return cn, nil