opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DefaultShardDataTreeChangeListenerPublisher.java

   1 /*
   2  * Copyright (c) 2015 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.controller.cluster.datastore;
   9
  10 import java.util.Collection;
  11 import java.util.Collections;
  12 import javax.annotation.concurrent.NotThreadSafe;
  13 import org.opendaylight.controller.md.sal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
  14 import org.opendaylight.controller.sal.core.spi.data.AbstractDOMStoreTreeChangePublisher;
  15 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  16 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  17 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
  18 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidates;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 /**
  23  * Default implementation of ShardDataTreeChangeListenerPublisher that directly generates and publishes
  24  * notifications for DataTreeChangeListeners.
  25  *
  26  * @author Thomas Pantelis
  27  */
  28 @NotThreadSafe
  29 final class DefaultShardDataTreeChangeListenerPublisher extends AbstractDOMStoreTreeChangePublisher
  30         implements ShardDataTreeChangeListenerPublisher {
  31     private static final Logger LOG = LoggerFactory.getLogger(DefaultShardDataTreeChangeListenerPublisher.class);
  32
  33     @Override
  34     public void publishChanges(final DataTreeCandidate candidate, String logContext) {
  35         processCandidateTree(candidate);
  36     }
  37
  38     @Override
  39     public ShardDataTreeChangeListenerPublisher newInstance() {
  40         return new DefaultShardDataTreeChangeListenerPublisher();
  41     }
  42
  43     @Override
  44     protected void notifyListeners(final Collection<AbstractDOMDataTreeChangeListenerRegistration<?>> registrations,
  45             final YangInstanceIdentifier path, final DataTreeCandidateNode node) {
  46         final Collection<DataTreeCandidate> changes = Collections.<DataTreeCandidate>singleton(
  47                 DataTreeCandidates.newDataTreeCandidate(path, node));
  48
  49         for (AbstractDOMDataTreeChangeListenerRegistration<?> reg : registrations) {
  50             reg.getInstance().onDataTreeChanged(changes);
  51         }
  52     }
  53
  54     @Override
  55     protected void registrationRemoved(final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
  56         LOG.debug("Registration {} removed", registration);
  57     }
  58 }