opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/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.controller.md.sal.binding.impl;
   9
  10 import com.google.common.collect.ClassToInstanceMap;
  11 import com.google.common.collect.ImmutableSet;
  12 import java.util.Set;
  13 import org.opendaylight.controller.md.sal.binding.api.NotificationService;
  14 import org.opendaylight.controller.md.sal.binding.impl.BindingDOMAdapterBuilder.Factory;
  15 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationService;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMService;
  17 import org.opendaylight.controller.sal.binding.codegen.impl.SingletonHolder;
  18 import org.opendaylight.controller.sal.binding.spi.NotificationInvokerFactory;
  19 import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeSerializer;
  20 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
  21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  22 import org.opendaylight.yangtools.yang.binding.NotificationListener;
  23
  24 public class BindingDOMNotificationServiceAdapter implements NotificationService, AutoCloseable {
  25
  26     public static final Factory<NotificationService> BUILDER_FACTORY = new Factory<NotificationService>() {
  27
  28         @Override
  29         public BindingDOMAdapterBuilder<NotificationService> newBuilder() {
  30             return new Builder();
  31         }
  32
  33     };
  34     private final BindingNormalizedNodeSerializer codec;
  35     private final DOMNotificationService domNotifService;
  36
  37     public BindingDOMNotificationServiceAdapter(final BindingNormalizedNodeSerializer codec, final DOMNotificationService domNotifService, final NotificationInvokerFactory notificationInvokerFactory) {
  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 = new BindingDOMNotificationListenerAdapter(codec, listener);
  45         final ListenerRegistration<BindingDOMNotificationListenerAdapter> domRegistration =
  46                 domNotifService.registerNotificationListener(domListener, domListener.getSupportedNotifications());
  47         return new ListenerRegistrationImpl<>(listener, domRegistration);
  48     }
  49
  50     @Override
  51     public void close() throws Exception {
  52
  53     }
  54
  55     private static class ListenerRegistrationImpl<T extends NotificationListener> extends AbstractListenerRegistration<T> {
  56         private final ListenerRegistration<?> listenerRegistration;
  57
  58         public ListenerRegistrationImpl(final T listener, final ListenerRegistration<?> listenerRegistration) {
  59             super(listener);
  60             this.listenerRegistration = listenerRegistration;
  61         }
  62
  63         @Override
  64         protected void removeRegistration() {
  65             listenerRegistration.close();
  66         }
  67     }
  68
  69     private static class Builder extends BindingDOMAdapterBuilder<NotificationService> {
  70
  71         @Override
  72         protected NotificationService createInstance(final BindingToNormalizedNodeCodec codec,
  73                 final ClassToInstanceMap<DOMService> delegates) {
  74             final DOMNotificationService domNotification = delegates.getInstance(DOMNotificationService.class);
  75             final NotificationInvokerFactory invokerFactory = SingletonHolder.INVOKER_FACTORY;
  76             return new BindingDOMNotificationServiceAdapter(codec.getCodecRegistry(), domNotification, invokerFactory);
  77         }
  78
  79         @Override
  80         public Set<? extends Class<? extends DOMService>> getRequiredDelegates() {
  81             return ImmutableSet.of(DOMNotificationService.class);
  82         }
  83     }
  84 }