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
8 package org.opendaylight.mdsal.dom.broker;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.util.concurrent.ListenableFuture;
13 import com.google.common.util.concurrent.SettableFuture;
14 import com.lmax.disruptor.EventFactory;
15 import java.util.Collection;
16 import org.opendaylight.mdsal.dom.api.DOMNotification;
17 import org.opendaylight.mdsal.dom.api.DOMNotificationListener;
18 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
19 import org.slf4j.Logger;
20 import org.slf4j.LoggerFactory;
23 * A single notification event in the disruptor ringbuffer. These objects are reused, so they do have mutable state.
25 final class DOMNotificationRouterEvent {
26 private static final Logger LOG = LoggerFactory.getLogger(DOMNotificationRouterEvent.class);
28 static final EventFactory<DOMNotificationRouterEvent> FACTORY = DOMNotificationRouterEvent::new;
30 private Collection<AbstractListenerRegistration<? extends DOMNotificationListener>> subscribers;
31 private DOMNotification notification;
32 private SettableFuture<Void> future;
34 private DOMNotificationRouterEvent() {
35 // Hidden on purpose, initialized in initialize()
38 @SuppressWarnings("checkstyle:hiddenField")
39 ListenableFuture<Void> initialize(final DOMNotification notification,
40 final Collection<AbstractListenerRegistration<? extends DOMNotificationListener>> subscribers) {
41 this.notification = requireNonNull(notification);
42 this.subscribers = requireNonNull(subscribers);
43 this.future = SettableFuture.create();
47 @SuppressWarnings("checkstyle:illegalCatch")
48 void deliverNotification() {
49 for (AbstractListenerRegistration<? extends DOMNotificationListener> reg : subscribers) {
50 if (reg.notClosed()) {
51 final DOMNotificationListener listener = reg.getInstance();
53 listener.onNotification(notification);
54 } catch (Exception e) {
55 LOG.warn("Listener {} failed during notification delivery", listener, e);