notification add ack and nack

weed/command/filer_replication.go

@@ -97,13 +97,19 @@ func runFilerReplicate(cmd *Command, args []string) bool {
 	replicator := replication.NewReplicator(config, "source.filer.", dataSink)
 
 	for {
-		key, m, err := notificationInput.ReceiveMessage()
+		key, m, onSuccessFn, onFailureFn, err := notificationInput.ReceiveMessage()
 		if err != nil {
 			glog.Errorf("receive %s: %+v", key, err)
+			if onFailureFn != nil {
+				onFailureFn()
+			}
 			continue
 		}
 		if key == "" {
 			// long poll received no messages
+			if onSuccessFn != nil {
+				onSuccessFn()
+			}
 			continue
 		}
 		if m.OldEntry != nil && m.NewEntry == nil {
@@ -115,8 +121,14 @@ func runFilerReplicate(cmd *Command, args []string) bool {
 		}
 		if err = replicator.Replicate(context.Background(), key, m); err != nil {
 			glog.Errorf("replicate %s: %+v", key, err)
+			if onFailureFn != nil {
+				onFailureFn()
+			}
 		} else {
 			glog.V(1).Infof("replicated %s", key)
+			if onSuccessFn != nil {
+				onSuccessFn()
+			}
 		}
 	}
 

weed/replication/sub/notification_aws_sqs.go

@@ -68,7 +68,7 @@ func (k *AwsSqsInput) initialize(awsAccessKeyId, awsSecretAccessKey, region, que
 	return nil
 }
 
-func (k *AwsSqsInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, err error) {
+func (k *AwsSqsInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error) {
 
 	// receive message
 	result, err := k.svc.ReceiveMessage(&sqs.ReceiveMessageInput{

weed/replication/sub/notification_gocdk_pub_sub.go

@@ -38,13 +38,24 @@ func (k *GoCDKPubSubInput) Initialize(configuration util.Configuration, prefix s
 	return nil
 }
 
-func (k *GoCDKPubSubInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, err error) {
+func (k *GoCDKPubSubInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error) {
 	msg, err := k.sub.Receive(context.Background())
+	if err != nil {
+		return
+	}
+	onSuccessFn = func() {
+		msg.Ack()
+	}
+	onFailureFn = func() {
+		if msg.Nackable() {
+			msg.Nack()
+		}
+	}
 	key = msg.Metadata["key"]
 	message = &filer_pb.EventNotification{}
 	err = proto.Unmarshal(msg.Body, message)
 	if err != nil {
-		return "", nil, err
+		return "", nil, onSuccessFn, onFailureFn, err
 	}
-	return key, message, nil
+	return key, message, onSuccessFn, onFailureFn, nil
 }

weed/replication/sub/notification_google_pub_sub.go

@@ -85,16 +85,22 @@ func (k *GooglePubSubInput) initialize(google_application_credentials, projectId
 
 	go k.sub.Receive(ctx, func(ctx context.Context, m *pubsub.Message) {
 		k.messageChan <- m
-		m.Ack()
 	})
 
 	return err
 }
 
-func (k *GooglePubSubInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, err error) {
+func (k *GooglePubSubInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error) {
 
 	m := <-k.messageChan
 
+	onSuccessFn = func() {
+		m.Ack()
+	}
+	onFailureFn = func() {
+		m.Nack()
+	}
+
 	// process the message
 	key = m.Attributes["key"]
 	message = &filer_pb.EventNotification{}

weed/replication/sub/notification_kafka.go

@@ -97,7 +97,7 @@ func (k *KafkaInput) initialize(hosts []string, topic string, offsetFile string,
 	return nil
 }
 
-func (k *KafkaInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, err error) {
+func (k *KafkaInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error) {
 
 	msg := <-k.messageChan
 

weed/replication/sub/notifications.go

@@ -10,7 +10,7 @@ type NotificationInput interface {
 	GetName() string
 	// Initialize initializes the file store
 	Initialize(configuration util.Configuration, prefix string) error
-	ReceiveMessage() (key string, message *filer_pb.EventNotification, err error)
+	ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error)
 }
 
 var (