50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package serverinterceptors
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import (
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"context"
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"github.com/tal-tech/go-zero/core/trace"
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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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// UnaryTracingInterceptor returns a func that handles tracing with given service name.
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func UnaryTracingInterceptor(serviceName string) grpc.UnaryServerInterceptor {
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return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo,
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handler grpc.UnaryHandler) (resp interface{}, err error) {
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md, ok := metadata.FromIncomingContext(ctx)
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if !ok {
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return handler(ctx, req)
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}
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carrier, err := trace.Extract(trace.GrpcFormat, md)
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if err != nil {
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return handler(ctx, req)
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}
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ctx, span := trace.StartServerSpan(ctx, carrier, serviceName, info.FullMethod)
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defer span.Finish()
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return handler(ctx, req)
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}
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}
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func StreamTracingInterceptor(serviceName string) grpc.StreamServerInterceptor {
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return func(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo,
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handler grpc.StreamHandler) error {
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ctx := ss.Context()
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md, ok := metadata.FromIncomingContext(ctx)
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if !ok {
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return handler(srv, ss)
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}
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carrier, err := trace.Extract(trace.GrpcFormat, md)
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if err != nil {
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return handler(srv, ss)
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}
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ctx, span := trace.StartServerSpan(ctx, carrier, serviceName, info.FullMethod)
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defer span.Finish()
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return handler(srv, ss)
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}
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}
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