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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| // SPDX-FileCopyrightText: 2022-present Intel Corporation | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| package otelemetry | ||
|
|
||
| import ( | ||
| "context" | ||
| "github.com/gogo/protobuf/proto" | ||
| "go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc" | ||
| "go.opentelemetry.io/otel/attribute" | ||
| "go.opentelemetry.io/otel/trace" | ||
| ) | ||
|
|
||
| // Event telemetry event | ||
| type event struct { | ||
| id int | ||
| message interface{} | ||
| messageType attribute.KeyValue | ||
| } | ||
|
|
||
| // Send sends a telemetry event | ||
| func (e event) Send(ctx context.Context) { | ||
| span := trace.SpanFromContext(ctx) | ||
| if p, ok := e.message.(proto.Message); ok { | ||
| span.AddEvent("event", trace.WithAttributes( | ||
| e.messageType, | ||
| otelgrpc.RPCMessageIDKey.Int(e.id), | ||
| otelgrpc.RPCMessageUncompressedSizeKey.Int(proto.Size(p)), | ||
| )) | ||
| } else { | ||
| span.AddEvent("event", trace.WithAttributes( | ||
| e.messageType, | ||
| otelgrpc.RPCMessageIDKey.Int(e.id), | ||
| )) | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| // SPDX-FileCopyrightText: 2022-present Intel Corporation | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| package otelemetry | ||
|
|
||
| import ( | ||
| "context" | ||
| "go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc" | ||
| "go.opentelemetry.io/otel/baggage" | ||
| "go.opentelemetry.io/otel/codes" | ||
| "go.opentelemetry.io/otel/trace" | ||
| "google.golang.org/grpc" | ||
| grpccodes "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/metadata" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
|
|
||
| // UnaryServerTelemetryInterceptor returns a grpc.UnaryServerInterceptor suitable | ||
| // for use in a grpc.NewServer call. | ||
| func UnaryServerTelemetryInterceptor(opts ...InstrumentationOption) grpc.UnaryServerInterceptor { | ||
| return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler, | ||
| ) (interface{}, error) { | ||
| requestMetadata, _ := metadata.FromIncomingContext(ctx) | ||
| metadataCopy := requestMetadata.Copy() | ||
|
|
||
| instrumentation := NewInstrumentation(opts) | ||
| bags, spanCtx := instrumentation.Extract(ctx, &metadataCopy) | ||
| ctx = baggage.ContextWithBaggage(ctx, bags) | ||
|
|
||
| tracer := instrumentation.NewTracer(trace.WithInstrumentationVersion("1.0.0")) | ||
|
|
||
| name, attr := spanInfo(info.FullMethod, peerFromCtx(ctx)) | ||
| ctx, span := tracer.Start( | ||
| trace.ContextWithRemoteSpanContext(ctx, spanCtx), | ||
| name, | ||
| trace.WithSpanKind(trace.SpanKindServer), | ||
| trace.WithAttributes(attr...), | ||
| ) | ||
|
|
||
| defer span.End() | ||
| e := event{ | ||
| messageType: otelgrpc.RPCMessageTypeReceived, | ||
| message: req, | ||
| id: 1, | ||
| } | ||
| e.Send(ctx) | ||
|
|
||
| resp, err := handler(ctx, req) | ||
| if err != nil { | ||
| s, _ := status.FromError(err) | ||
| span.SetStatus(codes.Error, s.Message()) | ||
| span.SetAttributes(statusCodeAttr(s.Code())) | ||
| e = event{ | ||
| messageType: otelgrpc.RPCMessageTypeSent, | ||
| message: s.Proto(), | ||
| id: 1, | ||
| } | ||
| e.Send(ctx) | ||
|
|
||
| } else { | ||
| span.SetAttributes(statusCodeAttr(grpccodes.OK)) | ||
| e = event{ | ||
| messageType: otelgrpc.RPCMessageTypeSent, | ||
| message: resp, | ||
| id: 1, | ||
| } | ||
| } | ||
|
|
||
| return resp, err | ||
| } | ||
| } | ||
|
|
||
| // StreamTelemetryServerInterceptor returns a grpc.StreamServerInterceptor suitable | ||
| // for use in a grpc.NewServer call. | ||
| func StreamTelemetryServerInterceptor(opts ...InstrumentationOption) grpc.StreamServerInterceptor { | ||
| return func( | ||
| srv interface{}, | ||
| stream grpc.ServerStream, | ||
| info *grpc.StreamServerInfo, | ||
| handler grpc.StreamHandler, | ||
| ) error { | ||
| ctx := stream.Context() | ||
|
|
||
| requestMetadata, _ := metadata.FromIncomingContext(ctx) | ||
| metadataCopy := requestMetadata.Copy() | ||
|
|
||
| instrumentation := NewInstrumentation(opts) | ||
| bags, spanCtx := instrumentation.Extract(ctx, &metadataCopy) | ||
| ctx = baggage.ContextWithBaggage(ctx, bags) | ||
|
|
||
| tracer := instrumentation.NewTracer(trace.WithInstrumentationVersion("1.0.0")) | ||
|
|
||
| name, attr := spanInfo(info.FullMethod, peerFromCtx(ctx)) | ||
| ctx, span := tracer.Start( | ||
| trace.ContextWithRemoteSpanContext(ctx, spanCtx), | ||
| name, | ||
| trace.WithSpanKind(trace.SpanKindServer), | ||
| trace.WithAttributes(attr...), | ||
| ) | ||
|
|
||
| defer span.End() | ||
| err := handler(srv, wrapServerStream(ctx, stream)) | ||
|
|
||
| if err != nil { | ||
| s, _ := status.FromError(err) | ||
| span.SetStatus(codes.Error, s.Message()) | ||
| span.SetAttributes(statusCodeAttr(s.Code())) | ||
| } else { | ||
| span.SetAttributes(statusCodeAttr(grpccodes.OK)) | ||
| } | ||
|
|
||
| return err | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| // SPDX-FileCopyrightText: 2022-present Intel Corporation | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| package otelemetry | ||
|
|
||
| import ( | ||
| "context" | ||
| "go.opentelemetry.io/otel" | ||
| "go.opentelemetry.io/otel/baggage" | ||
| "go.opentelemetry.io/otel/propagation" | ||
| "go.opentelemetry.io/otel/trace" | ||
| "google.golang.org/grpc/metadata" | ||
| ) | ||
|
|
||
| // Instrumentation interface | ||
| type Instrumentation interface { | ||
| Extract(ctx context.Context, metadata *metadata.MD) (baggage.Baggage, trace.SpanContext) | ||
| Inject(ctx context.Context, metadata *metadata.MD) | ||
| } | ||
|
|
||
| // InstrumentationOptions is a group of options for this instrumentation. | ||
| type InstrumentationOptions struct { | ||
| propagators propagation.TextMapPropagator | ||
| tracerProvider trace.TracerProvider | ||
| name string | ||
| } | ||
|
|
||
| func (o *InstrumentationOptions) Inject(ctx context.Context, metadata *metadata.MD) { | ||
| o.propagators.Inject(ctx, &metadataInfo{ | ||
| metadata: metadata, | ||
| }) | ||
| } | ||
|
|
||
| func (o *InstrumentationOptions) Extract(ctx context.Context, metadata *metadata.MD) (baggage.Baggage, trace.SpanContext) { | ||
| ctx = o.propagators.Extract(ctx, &metadataInfo{ | ||
| metadata: metadata, | ||
| }) | ||
|
|
||
| return baggage.FromContext(ctx), trace.SpanContextFromContext(ctx) | ||
| } | ||
|
|
||
| // InstrumentationOption function | ||
| type InstrumentationOption func(*InstrumentationOptions) | ||
|
|
||
| // NewInstrumentation creates a configuration for an instrumentation using a set of given options | ||
| func NewInstrumentation(opts []InstrumentationOption) *InstrumentationOptions { | ||
| c := &InstrumentationOptions{ | ||
| propagators: otel.GetTextMapPropagator(), | ||
| tracerProvider: trace.NewNoopTracerProvider(), | ||
| name: "", | ||
| } | ||
| for _, option := range opts { | ||
| option(c) | ||
| } | ||
|
|
||
| return c | ||
| } | ||
|
|
||
| func (o InstrumentationOptions) apply(opts ...InstrumentationOption) { | ||
| for _, opt := range opts { | ||
| opt(&o) | ||
| } | ||
| } | ||
|
|
||
| func (o InstrumentationOptions) NewTracer(opts ...trace.TracerOption) trace.Tracer { | ||
| return o.tracerProvider.Tracer(o.name, opts...) | ||
| } | ||
|
|
||
| // WithPropagators sets propagators | ||
| func WithPropagators(propagators propagation.TextMapPropagator) InstrumentationOption { | ||
| return func(options *InstrumentationOptions) { | ||
| options.propagators = propagators | ||
| } | ||
| } | ||
|
|
||
| // WithTraceProvider sets trace provider | ||
| func WithTraceProvider(tracerProvider trace.TracerProvider) InstrumentationOption { | ||
| return func(options *InstrumentationOptions) { | ||
| options.tracerProvider = tracerProvider | ||
| } | ||
| } | ||
|
|
||
| // WithInstrumentationName sets instrumentation name | ||
| func WithInstrumentationName(name string) InstrumentationOption { | ||
| return func(options *InstrumentationOptions) { | ||
| options.name = name | ||
| } | ||
| } | ||
|
|
||
| var _ Instrumentation = &InstrumentationOptions{} | ||
|
|
||
| type metadataInfo struct { | ||
| metadata *metadata.MD | ||
| } | ||
|
|
||
| // assert that metadataSupplier implements the TextMapCarrier interface | ||
| var _ propagation.TextMapCarrier = &metadataInfo{} | ||
|
|
||
| func (s *metadataInfo) Get(key string) string { | ||
| values := s.metadata.Get(key) | ||
| if len(values) == 0 { | ||
| return "" | ||
| } | ||
| return values[0] | ||
| } | ||
|
|
||
| func (s *metadataInfo) Set(key string, value string) { | ||
| s.metadata.Set(key, value) | ||
| } | ||
|
|
||
| func (s *metadataInfo) Keys() []string { | ||
| out := make([]string, 0, len(*s.metadata)) | ||
| for key := range *s.metadata { | ||
| out = append(out, key) | ||
| } | ||
| return out | ||
| } |
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