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Parse otel headers automatically + create otel example
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| # Distributed tracing example | ||
|
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| To test out distributed tracing, you can run Jaeger locally: | ||
| ```shell | ||
| docker run -d --name jaeger \ | ||
| -e COLLECTOR_OTLP_ENABLED=true \ | ||
| -p 4317:4317 -p 16686:16686 \ | ||
| jaegertracing/all-in-one:1.46 | ||
| ``` | ||
|
|
||
| And start the Restate server configured to send traces to Jaeger: | ||
| ```shell | ||
| npx @restatedev/restate-server --tracing-endpoint http://localhost:4317 | ||
| ``` | ||
|
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| Finally start this example service and register it with the Restate server: | ||
| ```shell | ||
| go run ./examples/otel | ||
| restate dep register http://localhost:9080 | ||
| ``` | ||
|
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| And you can now make invocations with `curl localhost:8080/Greeter/Greet --json '"hello"'`, | ||
| and they should appear in the [Jaeger UI](http://localhost:16686) with spans from both the | ||
| Restate server and the Go service. |
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| module github.com/restatedev/sdk-go/examples/otel | ||
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| go 1.21.0 | ||
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| toolchain go1.21.12 | ||
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| require ( | ||
| github.com/restatedev/sdk-go v0.9.1 | ||
| go.opentelemetry.io/otel v1.28.0 | ||
| go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 | ||
| go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0 | ||
| go.opentelemetry.io/otel/sdk v1.28.0 | ||
| ) | ||
|
|
||
| require ( | ||
| github.com/cenkalti/backoff/v4 v4.3.0 // indirect | ||
| github.com/go-logr/logr v1.4.2 // indirect | ||
| github.com/go-logr/stdr v1.2.2 // indirect | ||
| github.com/golang-jwt/jwt/v5 v5.2.1 // indirect | ||
| github.com/google/uuid v1.6.0 // indirect | ||
| github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect | ||
| github.com/mr-tron/base58 v1.2.0 // indirect | ||
| go.opentelemetry.io/otel/metric v1.28.0 // indirect | ||
| go.opentelemetry.io/otel/trace v1.28.0 // indirect | ||
| go.opentelemetry.io/proto/otlp v1.3.1 // indirect | ||
| golang.org/x/net v0.26.0 // indirect | ||
| golang.org/x/sys v0.21.0 // indirect | ||
| golang.org/x/text v0.16.0 // indirect | ||
| google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect | ||
| google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 // indirect | ||
| google.golang.org/grpc v1.64.0 // indirect | ||
| google.golang.org/protobuf v1.34.2 // indirect | ||
| ) | ||
|
|
||
| replace ( | ||
| github.com/restatedev/sdk-go => ../../ | ||
| github.com/restatedev/sdk-go/server => ../../server | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8= | ||
| github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE= | ||
| 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/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= | ||
| github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY= | ||
| github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= | ||
| github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag= | ||
| github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE= | ||
| github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk= | ||
| github.com/golang-jwt/jwt/v5 v5.2.1/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk= | ||
| 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/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0= | ||
| github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= | ||
| github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 h1:bkypFPDjIYGfCYD5mRBvpqxfYX1YCS1PXdKYWi8FsN0= | ||
| github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0/go.mod h1:P+Lt/0by1T8bfcF3z737NnSbmxQAppXMRziHUxPOC8k= | ||
| github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o= | ||
| github.com/mr-tron/base58 v1.2.0/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc= | ||
| github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= | ||
| github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= | ||
| github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg= | ||
| github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY= | ||
| go.opentelemetry.io/otel v1.28.0 h1:/SqNcYk+idO0CxKEUOtKQClMK/MimZihKYMruSMViUo= | ||
| go.opentelemetry.io/otel v1.28.0/go.mod h1:q68ijF8Fc8CnMHKyzqL6akLO46ePnjkgfIMIjUIX9z4= | ||
| go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 h1:3Q/xZUyC1BBkualc9ROb4G8qkH90LXEIICcs5zv1OYY= | ||
| go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0/go.mod h1:s75jGIWA9OfCMzF0xr+ZgfrB5FEbbV7UuYo32ahUiFI= | ||
| go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0 h1:R3X6ZXmNPRR8ul6i3WgFURCHzaXjHdm0karRG/+dj3s= | ||
| go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0/go.mod h1:QWFXnDavXWwMx2EEcZsf3yxgEKAqsxQ+Syjp+seyInw= | ||
| go.opentelemetry.io/otel/metric v1.28.0 h1:f0HGvSl1KRAU1DLgLGFjrwVyismPlnuU6JD6bOeuA5Q= | ||
| go.opentelemetry.io/otel/metric v1.28.0/go.mod h1:Fb1eVBFZmLVTMb6PPohq3TO9IIhUisDsbJoL/+uQW4s= | ||
| go.opentelemetry.io/otel/sdk v1.28.0 h1:b9d7hIry8yZsgtbmM0DKyPWMMUMlK9NEKuIG4aBqWyE= | ||
| go.opentelemetry.io/otel/sdk v1.28.0/go.mod h1:oYj7ClPUA7Iw3m+r7GeEjz0qckQRJK2B8zjcZEfu7Pg= | ||
| go.opentelemetry.io/otel/trace v1.28.0 h1:GhQ9cUuQGmNDd5BTCP2dAvv75RdMxEfTmYejp+lkx9g= | ||
| go.opentelemetry.io/otel/trace v1.28.0/go.mod h1:jPyXzNPg6da9+38HEwElrQiHlVMTnVfM3/yv2OlIHaI= | ||
| go.opentelemetry.io/proto/otlp v1.3.1 h1:TrMUixzpM0yuc/znrFTP9MMRh8trP93mkCiDVeXrui0= | ||
| go.opentelemetry.io/proto/otlp v1.3.1/go.mod h1:0X1WI4de4ZsLrrJNLAQbFeLCm3T7yBkR0XqQ7niQU+8= | ||
| go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto= | ||
| go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE= | ||
| golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ= | ||
| golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE= | ||
| golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ= | ||
| golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk= | ||
| golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws= | ||
| golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA= | ||
| golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4= | ||
| golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI= | ||
| google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 h1:0+ozOGcrp+Y8Aq8TLNN2Aliibms5LEzsq99ZZmAGYm0= | ||
| google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094/go.mod h1:fJ/e3If/Q67Mj99hin0hMhiNyCRmt6BQ2aWIJshUSJw= | ||
| google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 h1:BwIjyKYGsK9dMCBOorzRri8MQwmi7mT9rGHsCEinZkA= | ||
| google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094/go.mod h1:Ue6ibwXGpU+dqIcODieyLOcgj7z8+IcskoNIgZxtrFY= | ||
| google.golang.org/grpc v1.64.0 h1:KH3VH9y/MgNQg1dE7b3XfVK0GsPSIzJwdF617gUSbvY= | ||
| google.golang.org/grpc v1.64.0/go.mod h1:oxjF8E3FBnjp+/gVFYdWacaLDx9na1aqy9oovLpxQYg= | ||
| google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg= | ||
| google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw= | ||
| gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= | ||
| gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= |
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| package main | ||
|
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||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "log" | ||
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| restate "github.com/restatedev/sdk-go" | ||
| "github.com/restatedev/sdk-go/server" | ||
| "go.opentelemetry.io/otel" | ||
| "go.opentelemetry.io/otel/attribute" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc" | ||
| "go.opentelemetry.io/otel/propagation" | ||
| "go.opentelemetry.io/otel/sdk/resource" | ||
| sdktrace "go.opentelemetry.io/otel/sdk/trace" | ||
| ) | ||
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| type Greeter struct{} | ||
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| func (Greeter) Greet(ctx restate.Context, message string) (string, error) { | ||
| _, span := otel.Tracer("").Start(ctx, "Greet") | ||
| defer span.End() | ||
|
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| return fmt.Sprintf("%s!", message), nil | ||
| } | ||
|
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| func main() { | ||
| exporter, err := otlptrace.New( | ||
| context.Background(), | ||
| otlptracegrpc.NewClient( | ||
| otlptracegrpc.WithInsecure(), | ||
| otlptracegrpc.WithEndpoint("localhost:4317"), | ||
| ), | ||
| ) | ||
|
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| if err != nil { | ||
| log.Fatalf("Could not set exporter: %v", err) | ||
| } | ||
|
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| resources, err := resource.New( | ||
| context.Background(), | ||
| resource.WithAttributes( | ||
| attribute.String("service.name", "restate-sdk-go-otel-example-greeter"), | ||
| ), | ||
| ) | ||
| if err != nil { | ||
| log.Fatalf("Could not set resources: %v", err) | ||
| } | ||
|
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| otel.SetTracerProvider( | ||
| sdktrace.NewTracerProvider( | ||
| sdktrace.WithSampler(sdktrace.ParentBased(sdktrace.AlwaysSample())), | ||
| sdktrace.WithSpanProcessor(sdktrace.NewBatchSpanProcessor(exporter)), | ||
| sdktrace.WithResource(resources), | ||
| ), | ||
| ) | ||
|
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| otel.SetTextMapPropagator(propagation.TraceContext{}) | ||
|
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| if err := server.NewRestate(). | ||
| Bind(restate.Reflect(Greeter{})). | ||
| Start(context.Background(), ":9080"); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } |
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