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 akka.japi.Creator;
13 import com.google.common.base.Preconditions;
14 import org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor;
15 import org.opendaylight.controller.cluster.datastore.messages.DataChanged;
16 import org.opendaylight.controller.cluster.datastore.messages.DataChangedReply;
17 import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
18 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
19 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
20 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
22 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
25 * Actor for a DataChangeListener.
27 * @Deprecated Replaced by {@link DataTreeChangeListener}
30 public class DataChangeListener extends AbstractUntypedActor {
31 private final AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener;
32 private boolean notificationsEnabled = false;
34 public DataChangeListener(AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener) {
35 this.listener = Preconditions.checkNotNull(listener, "listener should not be null");
39 public void handleReceive(Object message) {
40 if (message instanceof DataChanged) {
42 } else if (message instanceof EnableNotification) {
43 enableNotification((EnableNotification) message);
45 unknownMessage(message);
49 private void enableNotification(EnableNotification message) {
50 notificationsEnabled = message.isEnabled();
51 LOG.debug("{} notifications for listener {}", notificationsEnabled ? "Enabled" : "Disabled",
55 @SuppressWarnings("checkstyle:IllegalCatch")
56 private void dataChanged(Object message) {
58 // Do nothing if notifications are not enabled
59 if (!notificationsEnabled) {
60 LOG.debug("Notifications not enabled for listener {} - dropping change notification", listener);
64 DataChanged reply = (DataChanged) message;
65 AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> change = reply.getChange();
67 LOG.debug("Sending change notification {} to listener {}", change, listener);
70 this.listener.onDataChanged(change);
71 } catch (RuntimeException e) {
72 LOG.error( String.format( "Error notifying listener %s", this.listener ), e );
75 if (isValidSender(getSender())) {
76 getSender().tell(DataChangedReply.INSTANCE, getSelf());
80 public static Props props(final AsyncDataChangeListener<YangInstanceIdentifier,
81 NormalizedNode<?, ?>> listener) {
82 return Props.create(new DataChangeListenerCreator(listener));
85 private static class DataChangeListenerCreator implements Creator<DataChangeListener> {
86 private static final long serialVersionUID = 1L;
88 final AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener;
90 DataChangeListenerCreator(
91 AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener) {
92 this.listener = listener;
96 public DataChangeListener create() throws Exception {
97 return new DataChangeListener(listener);