netconf/sal-netconf-connector/src/main/java/org/opendaylight/netconf/sal/connect/netconf/sal/NetconfDeviceNotificationService.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.netconf.sal.connect.netconf.sal;
   9
  10 import com.google.common.collect.HashMultimap;
  11 import com.google.common.collect.Lists;
  12 import com.google.common.collect.Multimap;
  13 import java.util.Collection;
  14 import javax.annotation.Nonnull;
  15 import org.opendaylight.mdsal.dom.api.DOMNotification;
  16 import org.opendaylight.mdsal.dom.api.DOMNotificationListener;
  17 import org.opendaylight.mdsal.dom.api.DOMNotificationService;
  18 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
  19 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  20 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public class NetconfDeviceNotificationService implements DOMNotificationService {
  25
  26     private static final Logger LOG = LoggerFactory.getLogger(NetconfDeviceNotificationService.class);
  27
  28     private final Multimap<SchemaPath, DOMNotificationListener> listeners = HashMultimap.create();
  29
  30     // Notification publish is very simple and hijacks the thread of the caller
  31     // TODO shouldnt we reuse the implementation for notification router from sal-broker-impl ?
  32     @SuppressWarnings("checkstyle:IllegalCatch")
  33     public synchronized void publishNotification(final DOMNotification notification) {
  34         for (final DOMNotificationListener domNotificationListener : listeners.get(notification.getType())) {
  35             try {
  36                 domNotificationListener.onNotification(notification);
  37             } catch (final Exception e) {
  38                 LOG.warn("Listener {} threw an uncaught exception during processing notification {}",
  39                         domNotificationListener, notification, e);
  40             }
  41         }
  42     }
  43
  44     @Override
  45     public synchronized <T extends DOMNotificationListener> ListenerRegistration<T> registerNotificationListener(
  46             @Nonnull final T listener, @Nonnull final Collection<SchemaPath> types) {
  47         for (final SchemaPath type : types) {
  48             listeners.put(type, listener);
  49         }
  50
  51         return new AbstractListenerRegistration<T>(listener) {
  52             @Override
  53             protected void removeRegistration() {
  54                 for (final SchemaPath type : types) {
  55                     listeners.remove(type, listener);
  56                 }
  57             }
  58         };
  59     }
  60
  61     @Override
  62     public synchronized <T extends DOMNotificationListener> ListenerRegistration<T> registerNotificationListener(
  63             @Nonnull final T listener, final SchemaPath... types) {
  64         return registerNotificationListener(listener, Lists.newArrayList(types));
  65     }
  66 }