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.Invoker;
  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.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
  25 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidates;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 final class InMemoryDOMDataTreeShardChangePublisher extends AbstractDOMShardTreeChangePublisher {
  30
  31     private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataTreeShardChangePublisher.class);
  32
  33     private static final Invoker<AbstractDOMDataTreeChangeListenerRegistration<?>, DataTreeCandidate>
  34         MANAGER_INVOKER = (listener, notification) -> {
  35             final DOMDataTreeChangeListener inst = listener.getInstance();
  36             if (inst != null) {
  37                 inst.onDataTreeChanged(ImmutableList.of(notification));
  38             }
  39         };
  40
  41     private final QueuedNotificationManager<AbstractDOMDataTreeChangeListenerRegistration<?>,
  42         DataTreeCandidate> notificationManager;
  43
  44     InMemoryDOMDataTreeShardChangePublisher(final Executor executor,
  45                                             final int maxQueueSize,
  46                                             final DataTree dataTree,
  47                                             final YangInstanceIdentifier rootPath,
  48                                             final Map<DOMDataTreeIdentifier, ChildShardContext> childShards) {
  49         super(dataTree, rootPath, childShards);
  50         notificationManager = new QueuedNotificationManager<>(
  51                 executor, MANAGER_INVOKER, maxQueueSize, "DataTreeChangeListenerQueueMgr");
  52     }
  53
  54     @Override
  55     protected void notifyListeners(
  56             @Nonnull final Collection<AbstractDOMDataTreeChangeListenerRegistration<?>> registrations,
  57                                    @Nonnull final YangInstanceIdentifier path,
  58                                    @Nonnull final DataTreeCandidateNode node) {
  59         final DataTreeCandidate candidate = DataTreeCandidates.newDataTreeCandidate(path, node);
  60
  61         for (final AbstractDOMDataTreeChangeListenerRegistration<?> reg : registrations) {
  62             LOG.debug("Enqueueing candidate {} to registration {}", candidate, registrations);
  63             notificationManager.submitNotification(reg, candidate);
  64         }
  65     }
  66
  67     @Override
  68     protected void registrationRemoved(@Nonnull final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
  69         LOG.debug("Closing registration {}", registration);
  70
  71     }
  72
  73     @Override
  74     public <L extends DOMDataTreeChangeListener> AbstractDOMDataTreeChangeListenerRegistration<L>
  75             registerTreeChangeListener(final YangInstanceIdentifier path, final L listener) {
  76         return super.registerTreeChangeListener(path, listener);
  77     }
  78
  79     synchronized void publishChange(@Nonnull final DataTreeCandidate candidate) {
  80         processCandidateTree(candidate);
  81     }
  82 }