binding2/mdsal-binding2-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/adapter/impl/notification/BindingDOMNotificationServiceAdapter.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.javav2.dom.adapter.impl.notification;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.collect.ClassToInstanceMap;
  12 import com.google.common.collect.ImmutableSet;
  13 import java.util.Set;
  14 import org.opendaylight.mdsal.binding.javav2.api.NotificationService;
  15 import org.opendaylight.mdsal.binding.javav2.dom.adapter.spi.builder.BindingDOMAdapterBuilder;
  16 import org.opendaylight.mdsal.binding.javav2.dom.adapter.spi.builder.BindingDOMAdapterBuilder.Factory;
  17 import org.opendaylight.mdsal.binding.javav2.dom.codec.api.serializer.BindingNormalizedNodeSerializer;
  18 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingToNormalizedNodeCodec;
  19 import org.opendaylight.mdsal.binding.javav2.spec.runtime.NotificationListener;
  20 import org.opendaylight.mdsal.dom.api.DOMNotificationService;
  21 import org.opendaylight.mdsal.dom.api.DOMService;
  22 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
  23 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  24
  25 /**
  26  * Notification service adapter.
  27  */
  28 @Beta
  29 public class BindingDOMNotificationServiceAdapter implements NotificationService, AutoCloseable {
  30
  31     public static final Factory<NotificationService> BUILDER_FACTORY = Builder::new;
  32
  33     private final BindingNormalizedNodeSerializer codec;
  34     private final DOMNotificationService domNotifService;
  35
  36     public BindingDOMNotificationServiceAdapter(final BindingNormalizedNodeSerializer codec,
  37             final DOMNotificationService domNotifService) {
  38         this.codec = codec;
  39         this.domNotifService = domNotifService;
  40     }
  41
  42     @Override
  43     public <T extends NotificationListener> ListenerRegistration<T> registerNotificationListener(final T listener) {
  44         final BindingDOMNotificationListenerAdapter domListener =
  45                 new BindingDOMNotificationListenerAdapter(codec, listener);
  46         final ListenerRegistration<BindingDOMNotificationListenerAdapter> domRegistration =
  47                 domNotifService.registerNotificationListener(domListener, domListener.getSupportedNotifications());
  48         return new ListenerRegistrationImpl<>(listener, domRegistration);
  49     }
  50
  51     @Override
  52     public void close() throws Exception {
  53         // NOOP
  54     }
  55
  56     private static class ListenerRegistrationImpl<T extends NotificationListener>
  57             extends AbstractListenerRegistration<T> {
  58         private final ListenerRegistration<?> listenerRegistration;
  59
  60         ListenerRegistrationImpl(final T listener, final ListenerRegistration<?> listenerRegistration) {
  61             super(listener);
  62             this.listenerRegistration = listenerRegistration;
  63         }
  64
  65         @Override
  66         protected void removeRegistration() {
  67             listenerRegistration.close();
  68         }
  69     }
  70
  71     private static class Builder extends BindingDOMAdapterBuilder<NotificationService> {
  72
  73         @Override
  74         protected NotificationService createInstance(final BindingToNormalizedNodeCodec codec,
  75                 final ClassToInstanceMap<DOMService> delegates) {
  76             final DOMNotificationService domNotification = delegates.getInstance(DOMNotificationService.class);
  77             return new BindingDOMNotificationServiceAdapter(codec.getCodecRegistry(), domNotification);
  78         }
  79
  80         @Override
  81         public Set<? extends Class<? extends DOMService>> getRequiredDelegates() {
  82             return ImmutableSet.of(DOMNotificationService.class);
  83         }
  84     }
  85
  86     /**
  87      * Get DOM notification service.
  88      *
  89      * @return DOM notification service
  90      */
  91     public DOMNotificationService getDomService() {
  92         return domNotifService;
  93     }
  94 }
  95