fix(spanner): Configure keepAlive time for gRPC TCP connections (#13216)

sakthivelmanii · web-flow · commit ca8f64e0eed5 · 2025-10-24T15:15:50.000+05:30
Default keep alive time is 120 seconds. If customer wants to override
they can override it by passing the keepAlive configuration in the opts.
diff --git a/spanner/client.go b/spanner/client.go
@@ -44,6 +44,7 @@ import (
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/encoding/gzip"
+	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/peer"
 	"google.golang.org/grpc/status"
@@ -683,6 +684,7 @@ func allClientOpts(numChannels int, compression string, userOpts ...option.Clien
 		option.WithUserAgent(fmt.Sprintf("spanner-go/v%s", internal.Version)),
 		option.WithGRPCDialOption(grpc.WithChainUnaryInterceptor(addNativeMetricsInterceptor()...)),
 		option.WithGRPCDialOption(grpc.WithChainStreamInterceptor(addStreamNativeMetricsInterceptor()...)),
+		option.WithGRPCDialOption(grpc.WithKeepaliveParams(keepalive.ClientParameters{Time: 120 * time.Second})),
 	}
 	if enableDirectPathXds, _ := strconv.ParseBool(os.Getenv("GOOGLE_SPANNER_ENABLE_DIRECT_ACCESS")); enableDirectPathXds {
 		clientDefaultOpts = append(clientDefaultOpts, internaloption.AllowNonDefaultServiceAccount(true))
