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 edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
15 import org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor;
16 import org.opendaylight.controller.cluster.datastore.messages.DataChanged;
17 import org.opendaylight.controller.cluster.datastore.messages.DataChangedReply;
18 import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
19 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
20 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
21 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
23 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
26 * Actor for a DataChangeListener.
28 * @deprecated Replaced by {@link DataTreeChangeListener}
31 public class DataChangeListener extends AbstractUntypedActor {
32 private final AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener;
33 private boolean notificationsEnabled = false;
35 public DataChangeListener(AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener) {
36 this.listener = Preconditions.checkNotNull(listener, "listener should not be null");
40 public void handleReceive(Object message) {
41 if (message instanceof DataChanged) {
43 } else if (message instanceof EnableNotification) {
44 enableNotification((EnableNotification) message);
46 unknownMessage(message);
50 private void enableNotification(EnableNotification message) {
51 notificationsEnabled = message.isEnabled();
52 LOG.debug("{} notifications for listener {}", notificationsEnabled ? "Enabled" : "Disabled",
56 @SuppressWarnings("checkstyle:IllegalCatch")
57 private void dataChanged(Object message) {
59 // Do nothing if notifications are not enabled
60 if (!notificationsEnabled) {
61 LOG.debug("Notifications not enabled for listener {} - dropping change notification", listener);
65 DataChanged reply = (DataChanged) message;
66 AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> change = reply.getChange();
68 LOG.debug("Sending change notification {} to listener {}", change, listener);
71 this.listener.onDataChanged(change);
72 } catch (RuntimeException e) {
73 LOG.error( String.format( "Error notifying listener %s", this.listener ), e );
76 if (isValidSender(getSender())) {
77 getSender().tell(DataChangedReply.INSTANCE, getSelf());
81 public static Props props(final AsyncDataChangeListener<YangInstanceIdentifier,
82 NormalizedNode<?, ?>> listener) {
83 return Props.create(new DataChangeListenerCreator(listener));
86 private static class DataChangeListenerCreator implements Creator<DataChangeListener> {
87 private static final long serialVersionUID = 1L;
89 @SuppressFBWarnings(value = "SE_BAD_FIELD", justification = "This field is not Serializable but we don't "
90 + "create remote instances of this actor and thus don't need it to be Serializable.")
91 final AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener;
93 DataChangeListenerCreator(
94 AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener) {
95 this.listener = listener;
99 public DataChangeListener create() throws Exception {
100 return new DataChangeListener(listener);