feat 链路追踪

net/grpc/resolver/conn.go

@@ -2,6 +2,7 @@ package resolver
 
 import (
 	"git.hlsq.asia/mmorpg/service-common/log"
+	"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/keepalive"
@@ -12,6 +13,7 @@ func NewGrpcConnection(target string) (*grpc.ClientConn, error) {
 	cc, err := grpc.NewClient(
 		target,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithStatsHandler(otelgrpc.NewClientHandler()),
 		grpc.WithDefaultServiceConfig(`{"loadBalancingConfig": [{"round_robin": {}}]}`),
 		grpc.WithKeepaliveParams(
 			keepalive.ClientParameters{