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
   9 package org.opendaylight.mdsal.dom.store.inmemory;
  10
  11 import com.google.common.collect.ImmutableList;
  12 import java.util.Collection;
  13 import java.util.Map;
  14 import java.util.concurrent.Executor;
  15 import javax.annotation.Nonnull;
  16 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
  17 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  18 import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
  19 import org.opendaylight.mdsal.dom.spi.shard.ChildShardContext;
  20 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager;
  21 import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager.BatchedInvoker;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  23 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  24 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 final class InMemoryDOMDataTreeShardChangePublisher extends AbstractDOMShardTreeChangePublisher {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataTreeShardChangePublisher.class);
  31
  32     private static final BatchedInvoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>
  33         MANAGER_INVOKER = (listener, notifications) -> {
  34             final DOMDataTreeChangeListener inst = listener.getInstance();
  35             if (inst != null) {
  36                 inst.onDataTreeChanged(ImmutableList.copyOf(notifications));
  37             }
  38         };
  39
  40     private final QueuedNotificationManager<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>
  41         notificationManager;
  42
  43     InMemoryDOMDataTreeShardChangePublisher(final Executor executor,
  44                                             final int maxQueueSize,
  45                                             final DataTree dataTree,
  46                                             final YangInstanceIdentifier rootPath,
  47                                             final Map<DOMDataTreeIdentifier, ChildShardContext> childShards) {
  48         super(dataTree, rootPath, childShards);
  49         notificationManager = QueuedNotificationManager.create(
  50                 executor, MANAGER_INVOKER, maxQueueSize, "DataTreeChangeListenerQueueMgr");
  51     }
  52
  53     @Override
  54     protected void notifyListener(AbstractDOMDataTreeChangeListenerRegistration<?> registration,
  55             Collection<DataTreeCandidate> changes) {
  56         LOG.debug("Enqueueing candidates {} for registration {}", changes, registration);
  57         notificationManager.submitNotifications(registration, changes);
  58     }
  59
  60     @Override
  61     protected void registrationRemoved(@Nonnull final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
  62         LOG.debug("Closing registration {}", registration);
  63
  64     }
  65
  66     synchronized void publishChange(@Nonnull final DataTreeCandidate candidate) {
  67         processCandidateTree(candidate);
  68     }
  69 }