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.store.inmemory;
10 import org.opendaylight.mdsal.dom.spi.store.AbstractDOMStoreTreeChangePublisher;
12 import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
13 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
14 import com.google.common.base.Optional;
15 import java.util.Collection;
16 import java.util.Collections;
17 import java.util.concurrent.ExecutorService;
18 import javax.annotation.Nonnull;
19 import org.opendaylight.yangtools.concepts.ListenerRegistration;
20 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager;
21 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager.Invoker;
22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
23 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
24 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
25 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
26 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidates;
27 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
31 final class InMemoryDOMStoreTreeChangePublisher extends AbstractDOMStoreTreeChangePublisher {
32 private static final Invoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate> MANAGER_INVOKER =
33 new Invoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>() {
35 public void invokeListener(final AbstractDOMDataTreeChangeListenerRegistration<?> listener, final DataTreeCandidate notification) {
36 // FIXME: this is inefficient, as we could grab the entire queue for the listener and post it
37 final DOMDataTreeChangeListener inst = listener.getInstance();
39 inst.onDataTreeChanged(Collections.singletonList(notification));
43 private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMStoreTreeChangePublisher.class);
44 private final QueuedNotificationManager<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate> notificationManager;
46 InMemoryDOMStoreTreeChangePublisher(final ExecutorService listenerExecutor, final int maxQueueSize) {
47 notificationManager = new QueuedNotificationManager<>(listenerExecutor, MANAGER_INVOKER, maxQueueSize, "DataTreeChangeListenerQueueMgr");
51 protected void notifyListeners(final Collection<AbstractDOMDataTreeChangeListenerRegistration<?>> registrations, final YangInstanceIdentifier path, final DataTreeCandidateNode node) {
52 final DataTreeCandidate candidate = DataTreeCandidates.newDataTreeCandidate(path, node);
54 for (AbstractDOMDataTreeChangeListenerRegistration<?> reg : registrations) {
55 LOG.debug("Enqueueing candidate {} to registration {}", candidate, registrations);
56 notificationManager.submitNotification(reg, candidate);
61 protected synchronized void registrationRemoved(final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
62 LOG.debug("Closing registration {}", registration);
64 // FIXME: remove the queue for this registration and make sure we clear it
67 <L extends DOMDataTreeChangeListener> ListenerRegistration<L> registerTreeChangeListener(final YangInstanceIdentifier treeId, final L listener, final DataTreeSnapshot snapshot) {
68 final AbstractDOMDataTreeChangeListenerRegistration<L> reg = registerTreeChangeListener(treeId, listener);
70 final Optional<NormalizedNode<?, ?>> node = snapshot.readNode(treeId);
71 if (node.isPresent()) {
72 final DataTreeCandidate candidate = DataTreeCandidates.fromNormalizedNode(treeId, node.get());
73 notificationManager.submitNotification(reg, candidate);
79 synchronized void publishChange(@Nonnull final DataTreeCandidate candidate) {
80 // Runs synchronized with registrationRemoved()
81 processCandidateTree(candidate);