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 javax.annotation.concurrent.NotThreadSafe;
  12 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
  13 import org.opendaylight.mdsal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration;
  14 import org.opendaylight.mdsal.dom.spi.store.AbstractDOMStoreTreeChangePublisher;
  15 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  17 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 /**
  22  * Default implementation of ShardDataTreeChangeListenerPublisher that directly generates and publishes
  23  * notifications for DataTreeChangeListeners.
  24  *
  25  * @author Thomas Pantelis
  26  */
  27 @NotThreadSafe
  28 final class DefaultShardDataTreeChangeListenerPublisher extends AbstractDOMStoreTreeChangePublisher
  29         implements ShardDataTreeChangeListenerPublisher {
  30     private static final Logger LOG = LoggerFactory.getLogger(DefaultShardDataTreeChangeListenerPublisher.class);
  31
  32     @Override
  33     public void publishChanges(final DataTreeCandidate candidate, String logContext) {
  34         processCandidateTree(candidate);
  35     }
  36
  37     @Override
  38     public ShardDataTreeChangeListenerPublisher newInstance() {
  39         return new DefaultShardDataTreeChangeListenerPublisher();
  40     }
  41
  42     @Override
  43     protected void notifyListener(AbstractDOMDataTreeChangeListenerRegistration<?> registration,
  44             Collection<DataTreeCandidate> changes) {
  45         registration.getInstance().onDataTreeChanged(changes);
  46     }
  47
  48     @Override
  49     protected void registrationRemoved(final AbstractDOMDataTreeChangeListenerRegistration<?> registration) {
  50         LOG.debug("Registration {} removed", registration);
  51     }
  52
  53     @Override
  54     public <L extends org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener> ListenerRegistration<L>
  55             registerTreeChangeListener(final YangInstanceIdentifier treeId, final L listener) {
  56         final AbstractDOMDataTreeChangeListenerRegistration<DOMDataTreeChangeListener> registration =
  57             super.registerTreeChangeListener(treeId, (org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener)
  58                 changes -> listener.onDataTreeChanged(changes));
  59
  60         return new org.opendaylight.controller.md.sal.dom.spi.AbstractDOMDataTreeChangeListenerRegistration<L>(
  61                 listener) {
  62             @Override
  63             protected void removeRegistration() {
  64                 registration.close();
  65             }
  66         };
  67     }
  68 }