Still using Jaeger/Sentry? Uptrace is a distributed tracing tool that monitors performance, errors, and logs using OpenTelemetry.
gRPC OpenTelemetry Instrumentation
Installation
To install gRPC OpenTelemetry instrumentation:
go get go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc
Usage
To instrument gRPC client:
import (
"google.golang.org/grpc"
"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
)
conn, err := grpc.Dial(target,
grpc.WithInsecure(),
grpc.WithUnaryInterceptor(otelgrpc.UnaryClientInterceptor()),
grpc.WithStreamInterceptor(otelgrpc.StreamClientInterceptor()),
)
To instrument gRPC server:
import (
"google.golang.org/grpc"
"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
)
server := grpc.NewServer(
grpc.UnaryInterceptor(otelgrpc.UnaryServerInterceptor()),
grpc.StreamInterceptor(otelgrpc.StreamServerInterceptor()),
)
Metadata and baggage
On the client side, you can use gRPC metadata as a baggage:
import "google.golang.org/grpc/metadata"
md := metadata.Pairs(
"key1", "value1",
"key2", "value2",
)
ctx := metadata.NewOutgoingContext(context.Background(), md)
On the server side, you can use gRPC metadata from an incoming request:
import "google.golang.org/grpc/metadata"
md, ok := metadata.FromIncomingContext(ctx); ok {
fmt.Println(md)
}
Or use baggage API:
import "go.opentelemetry.io/otel/baggage"
baggage := baggage.FromContext(ctx)
What's next?
Next, instrument more operations, for example, database queries, errors, and logs. You can also learn about OpenTelemetry Go Tracing API to create your own instrumentations.
Popular instrumentations:
