2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.controller.cluster.datastore;
11 import akka.actor.Props;
12 import com.google.common.base.Preconditions;
13 import org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor;
14 import org.opendaylight.controller.cluster.datastore.messages.DataChanged;
15 import org.opendaylight.controller.cluster.datastore.messages.DataChangedReply;
16 import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
17 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
18 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
19 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
21 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
26 * @Deprecated Replaced by {@link DataTreeChangeListener}
29 public class DataChangeListener extends AbstractUntypedActor {
30 private static final Logger LOG = LoggerFactory.getLogger(DataChangeListener.class);
32 private final AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener;
33 private final YangInstanceIdentifier registeredPath;
34 private boolean notificationsEnabled = false;
36 public DataChangeListener(AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener,
37 final YangInstanceIdentifier registeredPath) {
38 this.listener = Preconditions.checkNotNull(listener, "listener should not be null");
39 this.registeredPath = Preconditions.checkNotNull(registeredPath);
43 public void handleReceive(Object message) {
44 if (message instanceof DataChanged){
46 } else if (message instanceof EnableNotification){
47 enableNotification((EnableNotification) message);
49 unknownMessage(message);
53 private void enableNotification(EnableNotification message) {
54 notificationsEnabled = message.isEnabled();
55 LOG.debug("{} notifications for listener {}", (notificationsEnabled ? "Enabled" : "Disabled"),
59 private void dataChanged(Object message) {
61 // Do nothing if notifications are not enabled
62 if(!notificationsEnabled) {
63 LOG.debug("Notifications not enabled for listener {} - dropping change notification", listener);
67 DataChanged reply = (DataChanged) message;
68 AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> change = reply.getChange();
70 LOG.debug("Sending change notification {} to listener {}", change, listener);
73 this.listener.onDataChanged(change);
74 } catch (RuntimeException e) {
75 LOG.error( String.format( "Error notifying listener %s", this.listener ), e );
78 if(isValidSender(getSender())) {
79 getSender().tell(DataChangedReply.INSTANCE, getSelf());
83 public static Props props(final AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener,
84 final YangInstanceIdentifier registeredPath) {
85 return Props.create(DataChangeListener.class, listener, registeredPath);