+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.md.sal.dom.store.impl;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.concurrent.ExecutorService;
+import javax.annotation.Nonnull;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
+import org.opendaylight.controller.md.sal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
+import org.opendaylight.controller.sal.core.spi.data.AbstractDOMStoreTreeChangePublisher;
+import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager;
+import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager.Invoker;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+final class InMemoryDOMStoreTreeChangePublisher extends AbstractDOMStoreTreeChangePublisher {
+ private static final Invoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate> MANAGER_INVOKER =
+ new Invoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>() {
+ @Override
+ public void invokeListener(final AbstractDOMDataTreeChangeListenerRegistration<?> listener, final DataTreeCandidate notification) {
+ // FIXME: this is inefficient, as we could grab the entire queue for the listener and post it
+ final DOMDataTreeChangeListener inst = listener.getInstance();
+ if (inst != null) {
+ inst.onDataTreeChanged(Collections.singletonList(notification));
+ }
+ }
+ };
+ private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMStoreTreeChangePublisher.class);
+ private final QueuedNotificationManager<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate> notificationManager;
+
+ InMemoryDOMStoreTreeChangePublisher(final ExecutorService listenerExecutor, final int maxQueueSize) {
+ notificationManager = new QueuedNotificationManager<>(listenerExecutor, MANAGER_INVOKER, maxQueueSize, "DataTreeChangeListenerQueueMgr");
+ }
+
+ @Override
+ protected void notifyListeners(final Collection<AbstractDOMDataTreeChangeListenerRegistration<?>> registrations, final YangInstanceIdentifier path, final DataTreeCandidateNode node) {
+ final DataTreeCandidate candidate = new SimpleDataTreeCandidate(path, node);
+
+ for (AbstractDOMDataTreeChangeListenerRegistration<?> reg : registrations) {
+ LOG.debug("Enqueueing candidate {} to registration {}", candidate, registrations);
+ notificationManager.submitNotification(reg, candidate);
+ }
+ }
+
+ @Override
+ protected synchronized void registrationRemoved(final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
+ LOG.debug("Closing registration {}", registration);
+
+ // FIXME: remove the queue for this registration and make sure we clear it
+ }
+
+ synchronized void publishChange(@Nonnull final DataTreeCandidate candidate) {
+ // Runs synchronized with registrationRemoved()
+ processCandidateTree(candidate);
+ }
+}