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.ArrayList;
  13 import java.util.Collection;
  14 import java.util.List;
  15 import java.util.Set;
  16 import org.opendaylight.controller.md.sal.binding.api.NotificationService;
  17 import org.opendaylight.controller.md.sal.binding.impl.BindingDOMAdapterBuilder.Factory;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationListener;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationService;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMService;
  21 import org.opendaylight.controller.sal.binding.codegen.impl.SingletonHolder;
  22 import org.opendaylight.controller.sal.binding.spi.NotificationInvokerFactory;
  23 import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeSerializer;
  24 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
  25 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  26 import org.opendaylight.yangtools.yang.binding.Notification;
  27 import org.opendaylight.yangtools.yang.binding.NotificationListener;
  28 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  29 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  30
  31 public class BindingDOMNotificationServiceAdapter implements NotificationService, AutoCloseable {
  32
  33     public static final Factory<NotificationService> BUILDER_FACTORY = new Factory<NotificationService>() {
  34
  35         @Override
  36         public BindingDOMAdapterBuilder<NotificationService> newBuilder() {
  37             return new Builder();
  38         }
  39
  40     };
  41     private final BindingNormalizedNodeSerializer codec;
  42     private final DOMNotificationService domNotifService;
  43     private final NotificationInvokerFactory notificationInvokerFactory;
  44
  45     public BindingDOMNotificationServiceAdapter(final BindingNormalizedNodeSerializer codec, final DOMNotificationService domNotifService, final NotificationInvokerFactory notificationInvokerFactory) {
  46         this.codec = codec;
  47         this.domNotifService = domNotifService;
  48         this.notificationInvokerFactory = notificationInvokerFactory;
  49     }
  50
  51     @Override
  52     public <T extends NotificationListener> ListenerRegistration<T> registerNotificationListener(final T listener) {
  53         final NotificationInvokerFactory.NotificationInvoker invoker = notificationInvokerFactory.invokerFor(listener);
  54         final DOMNotificationListener domListener = new BindingDOMNotificationListenerAdapter(codec, invoker);
  55         final Collection<SchemaPath> schemaPaths = convertNotifTypesToSchemaPath(invoker.getSupportedNotifications());
  56         final ListenerRegistration<DOMNotificationListener> domRegistration =
  57                 domNotifService.registerNotificationListener(domListener, schemaPaths);
  58         return new ListenerRegistrationImpl<>(listener, domRegistration);
  59     }
  60
  61
  62
  63     private Collection<SchemaPath> convertNotifTypesToSchemaPath(final Set<Class<? extends Notification>> notificationTypes) {
  64         final List<SchemaPath> schemaPaths = new ArrayList<>();
  65         for (final Class<? extends Notification> notificationType : notificationTypes) {
  66             schemaPaths.add(SchemaPath.create(true, BindingReflections.findQName(notificationType)));
  67         }
  68         return schemaPaths;
  69     }
  70
  71     @Override
  72     public void close() throws Exception {
  73
  74     }
  75
  76     private static class ListenerRegistrationImpl<T extends NotificationListener> extends AbstractListenerRegistration<T> {
  77         private final ListenerRegistration<?> listenerRegistration;
  78
  79         public ListenerRegistrationImpl(final T listener, final ListenerRegistration<?> listenerRegistration) {
  80             super(listener);
  81             this.listenerRegistration = listenerRegistration;
  82         }
  83
  84         @Override
  85         protected void removeRegistration() {
  86             listenerRegistration.close();
  87         }
  88     }
  89
  90     private static class Builder extends BindingDOMAdapterBuilder<NotificationService> {
  91
  92
  93         @Override
  94         protected NotificationService createInstance(final BindingToNormalizedNodeCodec codec,
  95                 final ClassToInstanceMap<DOMService> delegates) {
  96             final DOMNotificationService domNotification = delegates.getInstance(DOMNotificationService.class);
  97             final NotificationInvokerFactory invokerFactory = SingletonHolder.INVOKER_FACTORY;
  98             return new BindingDOMNotificationServiceAdapter(codec.getCodecRegistry(), domNotification, invokerFactory);
  99         }
 100
 101         @Override
 102         public Set<? extends Class<? extends DOMService>> getRequiredDelegates() {
 103             return ImmutableSet.of(DOMNotificationService.class);
 104         }
 105
 106
 107
 108     }
 109 }