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 com.google.common.base.Optional;
11 import com.google.common.collect.ImmutableList;
12 import java.util.Collection;
13 import java.util.concurrent.ExecutorService;
14 import javax.annotation.Nonnull;
15 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
16 import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
17 import org.opendaylight.mdsal.dom.spi.store.AbstractDOMStoreTreeChangePublisher;
18 import org.opendaylight.yangtools.concepts.ListenerRegistration;
19 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager;
20 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager.BatchedInvoker;
21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
22 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
23 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
24 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
25 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidates;
26 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
30 final class InMemoryDOMStoreTreeChangePublisher extends AbstractDOMStoreTreeChangePublisher {
31 private static final BatchedInvoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>
32 MANAGER_INVOKER = (listener, notifications) -> {
33 // FIXME: this is inefficient, as we could grab the entire queue for the listener and post it
34 final DOMDataTreeChangeListener inst = listener.getInstance();
36 inst.onDataTreeChanged(ImmutableList.copyOf(notifications));
39 private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMStoreTreeChangePublisher.class);
41 private final QueuedNotificationManager<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>
44 InMemoryDOMStoreTreeChangePublisher(final ExecutorService listenerExecutor, final int maxQueueSize) {
45 notificationManager = QueuedNotificationManager.create(listenerExecutor, MANAGER_INVOKER, maxQueueSize,
46 "DataTreeChangeListenerQueueMgr");
50 protected void notifyListeners(final Collection<AbstractDOMDataTreeChangeListenerRegistration<?>> registrations,
51 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(
62 final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
63 LOG.debug("Closing registration {}", registration);
65 // FIXME: remove the queue for this registration and make sure we clear it
68 <L extends DOMDataTreeChangeListener> ListenerRegistration<L> registerTreeChangeListener(
69 final YangInstanceIdentifier treeId, final L listener, final DataTreeSnapshot snapshot) {
70 final AbstractDOMDataTreeChangeListenerRegistration<L> reg = registerTreeChangeListener(treeId, listener);
72 final Optional<NormalizedNode<?, ?>> node = snapshot.readNode(treeId);
73 if (node.isPresent()) {
74 final DataTreeCandidate candidate = DataTreeCandidates.fromNormalizedNode(treeId, node.get());
75 notificationManager.submitNotification(reg, candidate);
81 synchronized void publishChange(@Nonnull final DataTreeCandidate candidate) {
82 // Runs synchronized with registrationRemoved()
83 processCandidateTree(candidate);