2 * Copyright (c) 2015 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.controller.cluster.datastore;
10 import com.google.common.base.Optional;
11 import java.util.Collection;
12 import java.util.function.Consumer;
13 import javax.annotation.concurrent.NotThreadSafe;
14 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
15 import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
16 import org.opendaylight.mdsal.dom.spi.store.AbstractDOMStoreTreeChangePublisher;
17 import org.opendaylight.yangtools.concepts.ListenerRegistration;
18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
19 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
20 import org.slf4j.Logger;
21 import org.slf4j.LoggerFactory;
24 * Default implementation of ShardDataTreeChangeListenerPublisher that directly generates and publishes
25 * notifications for DataTreeChangeListeners.
27 * @author Thomas Pantelis
30 final class DefaultShardDataTreeChangeListenerPublisher extends AbstractDOMStoreTreeChangePublisher
31 implements ShardDataTreeChangeListenerPublisher {
32 private static final Logger LOG = LoggerFactory.getLogger(DefaultShardDataTreeChangeListenerPublisher.class);
33 private String logContext;
35 DefaultShardDataTreeChangeListenerPublisher(String logContext) {
36 this.logContext = logContext;
40 public void publishChanges(final DataTreeCandidate candidate) {
41 if (LOG.isTraceEnabled()) {
42 LOG.trace("{}: publishChanges: {}", logContext, candidate);
44 LOG.debug("{}: publishChanges: rootPath: {}", logContext, candidate.getRootPath());
47 processCandidateTree(candidate);
51 protected void notifyListener(AbstractDOMDataTreeChangeListenerRegistration<?> registration,
52 Collection<DataTreeCandidate> changes) {
53 LOG.debug("{}: notifyListener: listener: {}", logContext, registration.getInstance());
54 registration.getInstance().onDataTreeChanged(changes);
58 protected void registrationRemoved(final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
59 LOG.debug("Registration {} removed", registration);
63 public void registerTreeChangeListener(YangInstanceIdentifier treeId, DOMDataTreeChangeListener listener,
64 Optional<DataTreeCandidate> initialState,
65 Consumer<ListenerRegistration<DOMDataTreeChangeListener>> onRegistration) {
66 LOG.debug("{}: registerTreeChangeListener: path: {}, listener: {}", logContext, treeId, listener);
68 AbstractDOMDataTreeChangeListenerRegistration<DOMDataTreeChangeListener> registration =
69 super.registerTreeChangeListener(treeId, listener);
71 onRegistration.accept(registration);
73 if (initialState.isPresent()) {
74 notifySingleListener(treeId, listener, initialState.get(), logContext);
78 static void notifySingleListener(YangInstanceIdentifier treeId, DOMDataTreeChangeListener listener,
79 DataTreeCandidate state, String logContext) {
80 LOG.debug("{}: notifySingleListener: path: {}, listener: {}", logContext, treeId, listener);
81 DefaultShardDataTreeChangeListenerPublisher publisher =
82 new DefaultShardDataTreeChangeListenerPublisher(logContext);
83 publisher.logContext = logContext;
84 publisher.registerTreeChangeListener(treeId, listener, Optional.absent(), noop -> { /* NOOP */ });
85 publisher.publishChanges(state);