otelgrpc: Remove high cardinality metric attributes

CHANGELOG.md

@@ -14,6 +14,10 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Set the description for the `rpc.server.duration` metric in `go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc`. (#4302)
 - Add `NewServerHandler` and `NewClientHandler` that return a `grpc.StatsHandler` used for gRPC instrumentation in `go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc`. (#3002)
 
+### Removed
+
+- The The high cardinality attributes `net.sock.peer.*` and `net.peer.*` were removed from the metrics generated by `go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc`. (#4322)
+
 ## [1.19.0/0.44.0/0.13.0] - 2023-09-12
 
 ### Added

instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go

@@ -368,7 +368,7 @@ func UnaryServerInterceptor(opts ...Option) grpc.UnaryServerInterceptor {
 		var statusCode grpc_codes.Code
 		defer func(t time.Time) {
 			elapsedTime := time.Since(t) / time.Millisecond
-			attr = append(attr, semconv.RPCGRPCStatusCodeKey.Int64(int64(statusCode)))
+			attr := append(metricAttributes(info.FullMethod), semconv.RPCGRPCStatusCodeKey.Int64(int64(statusCode)))
 			o := metric.WithAttributes(attr...)
 			cfg.rpcServerDuration.Record(ctx, int64(elapsedTime), o)
 		}(time.Now())
@@ -498,6 +498,11 @@ func StreamServerInterceptor(opts ...Option) grpc.StreamServerInterceptor {
 	}
 }
 
+func metricAttributes(fullMethod string) []attribute.KeyValue {
+	_, attrs := internal.ParseFullMethod(fullMethod)
+	return append(attrs, RPCSystemGRPC)
+}
+
 // spanInfo returns a span name and all appropriate attributes from the gRPC
 // method and peer address.
 func spanInfo(fullMethod, peerAddress string) (string, []attribute.KeyValue) {