Refactor gRPC connection handling and update cache informer options (#146)

- Added a comment to suppress staticcheck warnings for deprecated gRPC
options.
- Updated the cache informer creation to use the new
`NewInformerWithOptions` method for better clarity and flexibility.

Author: eliranw

internal/deviceplugin/real_node.go

@@ -46,11 +46,12 @@ func dial(unixSocketPath string, timeout time.Duration) (*grpc.ClientConn, error
 	ctx, cancel := context.WithTimeout(ctx, timeout)
 	defer cancel()
 
+	//nolint:staticcheck // grpc.DialContext and WithBlock are deprecated but supported throughout 1.x
 	c, err := grpc.DialContext(
 		ctx,
 		unixSocketPath,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
-		grpc.WithBlock(),
+		grpc.WithBlock(), //nolint:staticcheck
 		grpc.WithContextDialer(func(_ context.Context, addr string) (net.Conn, error) {
 			return net.DialTimeout("unix", addr, timeout)
 		}),

internal/migfaker/syncconfig.go

@@ -55,9 +55,10 @@ func ContinuouslySyncMigConfigChanges(clientset kubernetes.Interface, migConfig
 		fields.OneTermEqualSelector("metadata.name", viper.GetString(constants.EnvNodeName)),
 	)
 
-	_, controller := cache.NewInformer(
-		listWatch, &v1.Node{}, 0,
-		cache.ResourceEventHandlerFuncs{
+	_, controller := cache.NewInformerWithOptions(cache.InformerOptions{
+		ListerWatcher: listWatch,
+		ObjectType:    &v1.Node{},
+		Handler: cache.ResourceEventHandlerFuncs{
 			AddFunc: func(obj interface{}) {
 				migConfig.Set(obj.(*v1.Node).Annotations[MigConfigAnnotation])
 			},
@@ -69,7 +70,7 @@ func ContinuouslySyncMigConfigChanges(clientset kubernetes.Interface, migConfig
 				}
 			},
 		},
-	)
+	})
 
 	go controller.Run(stop)
 }