dom/mdsal-dom-inmemory-datastore/src/main/java/org/opendaylight/mdsal/dom/store/inmemory/InMemoryDOMDataTreeShardChangePublisher.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.mdsal.dom.store.inmemory;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import java.util.Collection;
  12 import java.util.Map;
  13 import java.util.concurrent.Executor;
  14 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
  15 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  16 import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
  17 import org.opendaylight.mdsal.dom.spi.shard.ChildShardContext;
  18 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager;
  19 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager.BatchedInvoker;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  21 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  22 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 final class InMemoryDOMDataTreeShardChangePublisher extends AbstractDOMShardTreeChangePublisher {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataTreeShardChangePublisher.class);
  29
  30     private static final BatchedInvoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>
  31         MANAGER_INVOKER = (listener, notifications) -> {
  32             final DOMDataTreeChangeListener inst = listener.getInstance();
  33             if (inst != null) {
  34                 inst.onDataTreeChanged(ImmutableList.copyOf(notifications));
  35             }
  36         };
  37
  38     private final QueuedNotificationManager<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>
  39         notificationManager;
  40
  41     InMemoryDOMDataTreeShardChangePublisher(final Executor executor,
  42                                             final int maxQueueSize,
  43                                             final DataTree dataTree,
  44                                             final YangInstanceIdentifier rootPath,
  45                                             final Map<DOMDataTreeIdentifier, ChildShardContext> childShards) {
  46         super(dataTree, rootPath, childShards);
  47         notificationManager = QueuedNotificationManager.create(executor, MANAGER_INVOKER, maxQueueSize,
  48             "DataTreeChangeListenerQueueMgr");
  49     }
  50
  51     @Override
  52     protected void notifyListener(final AbstractDOMDataTreeChangeListenerRegistration<?> registration,
  53             final Collection<DataTreeCandidate> changes) {
  54         LOG.debug("Enqueueing candidates {} for registration {}", changes, registration);
  55         notificationManager.submitNotifications(registration, changes);
  56     }
  57
  58     @Override
  59     protected void registrationRemoved(final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
  60         LOG.debug("Closing registration {}", registration);
  61
  62     }
  63
  64     synchronized void publishChange(final DataTreeCandidate candidate) {
  65         processCandidateTree(candidate);
  66     }
  67 }