opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/sal/binding/impl/NotificationBrokerImpl.xtend

   1 /*
   2  * Copyright (c) 2013 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.sal.binding.impl
   9
  10 import org.opendaylight.controller.sal.binding.api.NotificationProviderService
  11 import org.opendaylight.yangtools.yang.binding.Notification
  12 import com.google.common.collect.Multimap
  13 import org.opendaylight.controller.sal.binding.api.NotificationListener
  14 import com.google.common.collect.HashMultimap
  15 import java.util.concurrent.ExecutorService
  16 import java.util.Collection
  17
  18 class NotificationBrokerImpl implements NotificationProviderService {
  19
  20     val Multimap<Class<? extends Notification>, NotificationListener<?>> listeners;
  21     val ExecutorService executor;
  22
  23     new(ExecutorService executor) {
  24         listeners = HashMultimap.create()
  25         this.executor = executor;
  26     }
  27
  28     override <T extends Notification> addNotificationListener(Class<T> notificationType,
  29         NotificationListener<T> listener) {
  30         listeners.put(notificationType, listener)
  31     }
  32
  33     override <T extends Notification> removeNotificationListener(Class<T> notificationType,
  34         NotificationListener<T> listener) {
  35         listeners.remove(notificationType, listener)
  36     }
  37
  38     override notify(Notification notification) {
  39         notification.notificationTypes.forEach [
  40             listeners.get(it as Class<? extends Notification>)?.notifyAll(notification)
  41         ]
  42     }
  43
  44     def getNotificationTypes(Notification notification) {
  45         notification.class.interfaces.filter[it != Notification && Notification.isAssignableFrom(it)]
  46     }
  47
  48     @SuppressWarnings("unchecked")
  49     def notifyAll(Collection<NotificationListener<?>> listeners, Notification notification) {
  50         listeners.forEach[(it as NotificationListener).onNotification(notification)]
  51     }
  52 }