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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package opentracing | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "github.com/opentracing/opentracing-go" | ||
| "github.com/opentracing/opentracing-go/ext" | ||
| "google.golang.org/grpc/grpclog" | ||
|
|
||
| "github.com/grpc-ecosystem/go-grpc-middleware/v2/util/metautils" | ||
| ) | ||
|
|
||
| var ( | ||
| grpcTag = opentracing.Tag{Key: string(ext.Component), Value: "gRPC"} | ||
| ) | ||
|
|
||
| // ClientAddContextTags returns a context with specified opentracing tags, which | ||
| // are used by UnaryClientInterceptor/StreamClientInterceptor when creating a | ||
| // new span. | ||
| func ClientAddContextTags(ctx context.Context, tags opentracing.Tags) context.Context { | ||
| return context.WithValue(ctx, clientSpanTagKey{}, tags) | ||
| } | ||
|
|
||
| type clientSpanTagKey struct{} | ||
|
|
||
| func newClientSpanFromContext(ctx context.Context, tracer opentracing.Tracer, fullMethodName string) (context.Context, opentracing.Span) { | ||
| var parentSpanCtx opentracing.SpanContext | ||
| if parent := opentracing.SpanFromContext(ctx); parent != nil { | ||
| parentSpanCtx = parent.Context() | ||
| } | ||
| opts := []opentracing.StartSpanOption{ | ||
| opentracing.ChildOf(parentSpanCtx), | ||
| ext.SpanKindRPCClient, | ||
| grpcTag, | ||
| } | ||
| if tagx := ctx.Value(clientSpanTagKey{}); tagx != nil { | ||
| if opt, ok := tagx.(opentracing.StartSpanOption); ok { | ||
| opts = append(opts, opt) | ||
| } | ||
| } | ||
| clientSpan := tracer.StartSpan(fullMethodName, opts...) | ||
| // Make sure we add this to the metadata of the call, so it gets propagated: | ||
| md := metautils.ExtractOutgoing(ctx).Clone() | ||
| if err := tracer.Inject(clientSpan.Context(), opentracing.HTTPHeaders, metadataTextMap(md)); err != nil { | ||
| grpclog.Infof("grpc_opentracing: failed serializing trace information: %v", err) | ||
| } | ||
| ctxWithMetadata := md.ToOutgoing(ctx) | ||
| return opentracing.ContextWithSpan(ctxWithMetadata, clientSpan), clientSpan | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| package opentracing_test | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "google.golang.org/grpc" | ||
|
|
||
| "github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors/tags" | ||
| "github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors/tracing" | ||
| grpcopentracing "github.com/grpc-ecosystem/go-grpc-middleware/v2/providers/opentracing" | ||
| ) | ||
|
|
||
| func Example() { | ||
| _ = grpc.NewServer( | ||
| grpc.ChainUnaryInterceptor( | ||
| tags.UnaryServerInterceptor(tags.WithFieldExtractor(tags.CodeGenRequestFieldExtractor)), | ||
| tracing.UnaryServerInterceptor(grpcopentracing.InterceptorTracer()), | ||
| ), | ||
| grpc.ChainStreamInterceptor( | ||
| tags.StreamServerInterceptor(tags.WithFieldExtractor(tags.CodeGenRequestFieldExtractor)), | ||
| tracing.StreamServerInterceptor(grpcopentracing.InterceptorTracer()), | ||
| ), | ||
| ) | ||
|
|
||
| _, _ = grpc.Dial("", | ||
| grpc.WithUnaryInterceptor(tracing.UnaryClientInterceptor(grpcopentracing.InterceptorTracer())), | ||
| grpc.WithStreamInterceptor(tracing.StreamClientInterceptor(grpcopentracing.InterceptorTracer())), | ||
| ) | ||
| } | ||
|
|
||
| func TestExamplesBuildable(t *testing.T) { | ||
| Example() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| module github.com/grpc-ecosystem/go-grpc-middleware/providers/opentracing/v2 | ||
|
|
||
| go 1.14 | ||
|
|
||
| replace github.com/grpc-ecosystem/go-grpc-middleware/v2 => ../.. | ||
|
|
||
| require ( | ||
| github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.0.0-rc.2 | ||
| github.com/opentracing/opentracing-go v1.1.0 | ||
| github.com/pkg/errors v0.9.1 | ||
| github.com/stretchr/testify v1.7.0 | ||
| google.golang.org/grpc v1.30.1 | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= | ||
| github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= | ||
| github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= | ||
| 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= | ||
| github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8= | ||
| github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= | ||
| github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= | ||
| github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= | ||
| github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98= | ||
| github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= | ||
| github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= | ||
| github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= | ||
| github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= | ||
| github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= | ||
| github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw= | ||
| github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= | ||
| github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= | ||
| github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs= | ||
| github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w= | ||
| github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0= | ||
| 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 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM= | ||
| github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= | ||
| github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= | ||
| github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= | ||
| 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 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w= | ||
| github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= | ||
| github.com/opentracing/opentracing-go v1.1.0 h1:pWlfV3Bxv7k65HYwkikxat0+s3pV4bsqf19k25Ur8rU= | ||
| github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o= | ||
| github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= | ||
| github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= | ||
| 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/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= | ||
| github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= | ||
| github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY= | ||
| github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= | ||
| golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= | ||
| golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= | ||
| golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= | ||
| golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU= | ||
| golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= | ||
| 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 v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= | ||
| golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= | ||
| golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI= | ||
| golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= | ||
| golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= | ||
| golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= | ||
| golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= | ||
| golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= | ||
| golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= | ||
| golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU= | ||
| golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= | ||
| golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg= | ||
| golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= | ||
| golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= | ||
| golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY= | ||
| golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= | ||
| golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q= | ||
| golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4= | ||
| golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= | ||
| google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM= | ||
| google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= | ||
| google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= | ||
| google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc= | ||
| google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo= | ||
| google.golang.org/genproto v0.0.0-20200624020401-64a14ca9d1ad h1:uAwc13+y0Y8QZLTYhLCu6lHhnG99ecQU5FYTj8zxAng= | ||
| google.golang.org/genproto v0.0.0-20200624020401-64a14ca9d1ad/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= | ||
| google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= | ||
| google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg= | ||
| google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY= | ||
| google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk= | ||
| google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= | ||
| google.golang.org/grpc v1.30.1 h1:oJTcovwKSu7V3TaBKd0/AXOuJVHjTdGTutbMHIOgVEQ= | ||
| google.golang.org/grpc v1.30.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= | ||
| google.golang.org/grpc/examples v0.0.0-20200723182653-9106c3fff523/go.mod h1:5j1uub0jRGhRiSghIlrThmBUgcgLXOVJQ/l1getT4uo= | ||
| google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= | ||
| google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0= | ||
| google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM= | ||
| google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE= | ||
| google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo= | ||
| google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= | ||
| google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= | ||
| 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 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c= | ||
| google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= | ||
| 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 h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= | ||
| 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= |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package opentracing | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| "github.com/opentracing/opentracing-go" | ||
| "google.golang.org/grpc/grpclog" | ||
|
|
||
| "github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors/tags" | ||
| ) | ||
|
|
||
| const ( | ||
| TagTraceId = "trace.traceid" | ||
| TagSpanId = "trace.spanid" | ||
| TagSampled = "trace.sampled" | ||
| jaegerNotSampledFlag = "0" | ||
| ) | ||
|
|
||
| // injectOpentracingIdsToTags writes trace data to tags. | ||
| // This is done in an incredibly hacky way, because the public-facing interface of opentracing doesn't give access to | ||
| // the TraceId and SpanId of the SpanContext. Only the Tracer's Inject/Extract methods know what these are. | ||
| // Most tracers have them encoded as keys with 'traceid' and 'spanid': | ||
| // https://github.com/openzipkin/zipkin-go-opentracing/blob/594640b9ef7e5c994e8d9499359d693c032d738c/propagation_ot.go#L29 | ||
| // https://github.com/opentracing/basictracer-go/blob/1b32af207119a14b1b231d451df3ed04a72efebf/propagation_ot.go#L26 | ||
| // Jaeger from Uber use one-key schema with next format '{trace-id}:{span-id}:{parent-span-id}:{flags}' | ||
| // https://www.jaegertracing.io/docs/client-libraries/#trace-span-identity | ||
| // Datadog uses keys ending with 'trace-id' and 'parent-id' (for span) by default: | ||
| // https://github.com/DataDog/dd-trace-go/blob/v1/ddtrace/tracer/textmap.go#L77 | ||
| func injectOpentracingIdsToTags(traceHeaderName string, span opentracing.Span, tags tags.Tags) { | ||
| if err := span.Tracer().Inject(span.Context(), opentracing.HTTPHeaders, | ||
| &tagsCarrier{Tags: tags, traceHeaderName: traceHeaderName}); err != nil { | ||
| grpclog.Infof("grpc_opentracing: failed extracting trace info into ctx %v", err) | ||
| } | ||
| } | ||
|
|
||
| // tagsCarrier is a really hacky way of | ||
| type tagsCarrier struct { | ||
| tags.Tags | ||
| traceHeaderName string | ||
| } | ||
|
|
||
| func (t *tagsCarrier) Set(key, val string) { | ||
| key = strings.ToLower(key) | ||
| if strings.Contains(key, "traceid") { | ||
| t.Tags.Set(TagTraceId, val) // this will most likely be base-16 (hex) encoded | ||
| } | ||
|
|
||
| if strings.Contains(key, "spanid") && !strings.Contains(strings.ToLower(key), "parent") { | ||
| t.Tags.Set(TagSpanId, val) // this will most likely be base-16 (hex) encoded | ||
| } | ||
|
|
||
| if strings.Contains(key, "sampled") { | ||
| switch val { | ||
| case "true", "false": | ||
| t.Tags.Set(TagSampled, val) | ||
| } | ||
| } | ||
|
|
||
| if key == t.traceHeaderName { | ||
| parts := strings.Split(val, ":") | ||
| if len(parts) == 4 { | ||
| t.Tags.Set(TagTraceId, parts[0]) | ||
| t.Tags.Set(TagSpanId, parts[1]) | ||
|
|
||
| if parts[3] != jaegerNotSampledFlag { | ||
| t.Tags.Set(TagSampled, "true") | ||
| } else { | ||
| t.Tags.Set(TagSampled, "false") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if strings.HasSuffix(key, "trace-id") { | ||
| t.Tags.Set(TagTraceId, val) | ||
| } | ||
|
|
||
| if strings.HasSuffix(key, "parent-id") { | ||
| t.Tags.Set(TagSpanId, val) | ||
| } | ||
| } |
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