binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/BindingDOMNotificationServiceAdapter.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.mdsal.binding.dom.adapter;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.VisibleForTesting;
  13 import com.google.common.collect.ClassToInstanceMap;
  14 import com.google.common.collect.ImmutableSet;
  15 import java.util.Set;
  16 import org.opendaylight.mdsal.binding.api.NotificationService;
  17 import org.opendaylight.mdsal.binding.dom.adapter.BindingDOMAdapterBuilder.Factory;
  18 import org.opendaylight.mdsal.dom.api.DOMNotificationService;
  19 import org.opendaylight.mdsal.dom.api.DOMService;
  20 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
  21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  22 import org.opendaylight.yangtools.yang.binding.NotificationListener;
  23
  24 @VisibleForTesting
  25 public class BindingDOMNotificationServiceAdapter implements NotificationService {
  26     public static final Factory<NotificationService> BUILDER_FACTORY = Builder::new;
  27
  28     private final AdapterContext adapterContext;
  29     private final DOMNotificationService domNotifService;
  30
  31     public BindingDOMNotificationServiceAdapter(final AdapterContext adapterContext,
  32             final DOMNotificationService domNotifService) {
  33         this.adapterContext = requireNonNull(adapterContext);
  34         this.domNotifService = domNotifService;
  35     }
  36
  37     @Override
  38     public <T extends NotificationListener> ListenerRegistration<T> registerNotificationListener(final T listener) {
  39         final BindingDOMNotificationListenerAdapter domListener
  40                 = new BindingDOMNotificationListenerAdapter(adapterContext, listener);
  41         final ListenerRegistration<BindingDOMNotificationListenerAdapter> domRegistration =
  42                 domNotifService.registerNotificationListener(domListener, domListener.getSupportedNotifications());
  43         return new ListenerRegistrationImpl<>(listener, domRegistration);
  44     }
  45
  46     private static class ListenerRegistrationImpl<T extends NotificationListener>
  47             extends AbstractListenerRegistration<T> {
  48         private final ListenerRegistration<?> listenerRegistration;
  49
  50         ListenerRegistrationImpl(final T listener, final ListenerRegistration<?> listenerRegistration) {
  51             super(listener);
  52             this.listenerRegistration = listenerRegistration;
  53         }
  54
  55         @Override
  56         protected void removeRegistration() {
  57             listenerRegistration.close();
  58         }
  59     }
  60
  61     private static class Builder extends BindingDOMAdapterBuilder<NotificationService> {
  62         Builder(final AdapterContext adapterContext) {
  63             super(adapterContext);
  64         }
  65
  66         @Override
  67         protected NotificationService createInstance(final ClassToInstanceMap<DOMService> delegates) {
  68             final DOMNotificationService domNotification = delegates.getInstance(DOMNotificationService.class);
  69             return new BindingDOMNotificationServiceAdapter(adapterContext(), domNotification);
  70         }
  71
  72         @Override
  73         public Set<? extends Class<? extends DOMService>> getRequiredDelegates() {
  74             return ImmutableSet.of(DOMNotificationService.class);
  75         }
  76     }
  77
  78     public DOMNotificationService getDomService() {
  79         return domNotifService;
  80     }
  81 }