39 lines
993 B
Go
39 lines
993 B
Go
package interceptors
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import (
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"context"
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"github.com/grafana/grafana/pkg/infra/tracing"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/propagation"
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"google.golang.org/grpc"
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"google.golang.org/grpc/metadata"
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)
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const tracingPrefix = "gRPC Server "
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func TracingStreamInterceptor(tracer tracing.Tracer) grpc.StreamServerInterceptor {
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return func(srv any, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
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ctx := stream.Context()
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if md, ok := metadata.FromIncomingContext(ctx); ok {
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ctx = otel.GetTextMapPropagator().Extract(ctx, propagation.HeaderCarrier(md))
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}
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ctx, span := tracer.Start(ctx, tracingPrefix+info.FullMethod)
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defer span.End()
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tracingStream := &tracingServerStream{
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ServerStream: stream,
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ctx: ctx,
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}
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return handler(srv, tracingStream)
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}
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}
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type tracingServerStream struct {
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grpc.ServerStream
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ctx context.Context
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}
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func (s *tracingServerStream) Context() context.Context {
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return s.ctx
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}
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