From bc9b555f90e3309ac52ad3cd3bf28e08cb579e00 Mon Sep 17 00:00:00 2001 From: Justin Toman Date: Tue, 17 Dec 2024 12:35:12 -0600 Subject: [PATCH] Merge branch 'master' into fix/server-sent-event-close-notify --- otel/README.md | 28 ++++++++++ otel/go.mod | 44 +++++++++++++++ otel/go.sum | 103 ++++++++++++++++++++++++++++++++++++ otel/main.go | 52 ++++++++++++++++++ realtime-advanced/routes.go | 3 +- realtime-chat/template.go | 2 +- server-sent-event/main.go | 4 ++ 7 files changed, 234 insertions(+), 2 deletions(-) create mode 100644 otel/README.md create mode 100644 otel/go.mod create mode 100644 otel/go.sum create mode 100644 otel/main.go diff --git a/otel/README.md b/otel/README.md new file mode 100644 index 0000000..2fb770d --- /dev/null +++ b/otel/README.md @@ -0,0 +1,28 @@ +# Use OTEL in Gin + +Currently set `ContextWithFallback = true` to use otel in Gin, but this doesn't seem like a good solution. + +This example shows a minimum case to use otel in Gin. + +To run the example: + +```bash +go run main.go +``` + +In stander output like this: + +```bash +[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached. + +[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production. + - using env: export GIN_MODE=release + - using code: gin.SetMode(gin.ReleaseMode) + +[GIN-debug] GET / --> main.main.func1 (4 handlers) +[GIN-debug] [WARNING] You trusted all proxies, this is NOT safe. We recommend you to set a value. +Please check https://pkg.go.dev/github.com/gin-gonic/gin#readme-don-t-trust-all-proxies for details. +[GIN-debug] Listening and serving HTTP on :8080 +traceID: 00477d7b56b757d0581328ef21d17271; spanID: 9d05e83c0c188a16; isSampled: true +[GIN] 2024/10/15 - 11:44:32 | 200 | 31.209µs | ::1 | GET "/" +``` diff --git a/otel/go.mod b/otel/go.mod new file mode 100644 index 0000000..c2ac674 --- /dev/null +++ b/otel/go.mod @@ -0,0 +1,44 @@ +module example + +go 1.22.5 + +require ( + github.com/gin-gonic/gin v1.10.0 + go.opentelemetry.io/contrib/instrumentation/github.com/gin-gonic/gin/otelgin v0.56.0 + go.opentelemetry.io/otel v1.31.0 + go.opentelemetry.io/otel/sdk v1.31.0 + go.opentelemetry.io/otel/trace v1.31.0 +) + +require ( + github.com/bytedance/sonic v1.12.3 // indirect + github.com/bytedance/sonic/loader v0.2.0 // indirect + github.com/cloudwego/base64x v0.1.4 // indirect + github.com/cloudwego/iasm v0.2.0 // indirect + github.com/gabriel-vasile/mimetype v1.4.5 // indirect + github.com/gin-contrib/sse v0.1.0 // indirect + github.com/go-logr/logr v1.4.2 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/go-playground/validator/v10 v10.22.1 // indirect + github.com/goccy/go-json v0.10.3 // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/cpuid/v2 v2.2.8 // indirect + github.com/leodido/go-urn v1.4.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.2.3 // indirect + github.com/twitchyliquid64/golang-asm v0.15.1 // indirect + github.com/ugorji/go/codec v1.2.12 // indirect + go.opentelemetry.io/otel/metric v1.31.0 // indirect + golang.org/x/arch v0.11.0 // indirect + golang.org/x/crypto v0.28.0 // indirect + golang.org/x/net v0.30.0 // indirect + golang.org/x/sys v0.26.0 // indirect + golang.org/x/text v0.19.0 // indirect + google.golang.org/protobuf v1.35.1 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/otel/go.sum b/otel/go.sum new file mode 100644 index 0000000..47c7b99 --- /dev/null +++ b/otel/go.sum @@ -0,0 +1,103 @@ +github.com/bytedance/sonic v1.12.3 h1:W2MGa7RCU1QTeYRTPE3+88mVC0yXmsRQRChiyVocVjU= +github.com/bytedance/sonic v1.12.3/go.mod h1:B8Gt/XvtZ3Fqj+iSKMypzymZxw/FVwgIGKzMzT9r/rk= +github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU= +github.com/bytedance/sonic/loader v0.2.0 h1:zNprn+lsIP06C/IqCHs3gPQIvnvpKbbxyXQP1iU4kWM= +github.com/bytedance/sonic/loader v0.2.0/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU= +github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y= +github.com/cloudwego/base64x v0.1.4/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w= +github.com/cloudwego/iasm v0.2.0 h1:1KNIy1I1H9hNNFEEH3DVnI4UujN+1zjpuk6gwHLTssg= +github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/gabriel-vasile/mimetype v1.4.5 h1:J7wGKdGu33ocBOhGy0z653k/lFKLFDPJMG8Gql0kxn4= +github.com/gabriel-vasile/mimetype v1.4.5/go.mod h1:ibHel+/kbxn9x2407k1izTA1S81ku1z/DlgOW2QE0M4= +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 v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU= +github.com/gin-gonic/gin 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v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA= +golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM= +golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY= +google.golang.org/protobuf v1.35.1 h1:m3LfL6/Ca+fqnjnlqQXNpFPABW1UD7mjh8KO2mKFytA= +google.golang.org/protobuf v1.35.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50= diff --git a/otel/main.go b/otel/main.go new file mode 100644 index 0000000..cd2baae --- /dev/null +++ b/otel/main.go @@ -0,0 +1,52 @@ +package main + +import ( + "context" + "fmt" + "log" + "net/http" + + "github.com/gin-gonic/gin" + + "go.opentelemetry.io/contrib/instrumentation/github.com/gin-gonic/gin/otelgin" + "go.opentelemetry.io/otel" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + "go.opentelemetry.io/otel/trace" +) + +var applicationName string = "demo" + +func main() { + otel.SetTracerProvider(sdktrace.NewTracerProvider(sdktrace.WithSampler(sdktrace.ParentBased(sdktrace.AlwaysSample())))) + app := gin.Default() + app.ContextWithFallback = true + app.Use(otelgin.Middleware(applicationName)) + + app.GET("/", func(ctx *gin.Context) { + traceID, spanID, isSampled := GetTraceInfo(ctx) + fmt.Printf("traceID: %v; spanID: %v; isSampled: %v\n", traceID, spanID, isSampled) + }) + + go func() { + if err := app.Run(":8080"); err != nil { + log.Fatalln(err) + } + }() + + http.Get("http://localhost:8080/") +} + +func GetTraceInfo(ctx context.Context) (traceID string, spanID string, isSampled bool) { + spanCtx := trace.SpanContextFromContext(ctx) + + if spanCtx.HasTraceID() { + traceID = spanCtx.TraceID().String() + } + if spanCtx.HasSpanID() { + spanID = spanCtx.SpanID().String() + } + + isSampled = spanCtx.IsSampled() + + return traceID, spanID, isSampled +} diff --git a/realtime-advanced/routes.go b/realtime-advanced/routes.go index f21ac3d..5ac90e1 100644 --- a/realtime-advanced/routes.go +++ b/realtime-advanced/routes.go @@ -21,8 +21,9 @@ func rateLimit(c *gin.Context) { if value%200 == 0 { fmt.Println("ip blocked") } - c.Abort() c.String(http.StatusServiceUnavailable, "you were automatically banned :)") + c.Abort() + return } } diff --git a/realtime-chat/template.go b/realtime-chat/template.go index cc1ab9b..81984c2 100644 --- a/realtime-chat/template.go +++ b/realtime-chat/template.go @@ -8,7 +8,7 @@ var html = template.Must(template.New("chat_room").Parse(` {{.roomid}} - +