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