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 javax.annotation.Nonnull;
  17 import org.opendaylight.controller.md.sal.binding.api.NotificationService;
  18 import org.opendaylight.controller.md.sal.binding.impl.BindingDOMAdapterBuilder.Factory;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMNotification;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationListener;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationService;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMService;
  23 import org.opendaylight.controller.sal.binding.codegen.impl.SingletonHolder;
  24 import org.opendaylight.controller.sal.binding.spi.NotificationInvokerFactory;
  25 import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeSerializer;
  26 import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
  27 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  28 import org.opendaylight.yangtools.yang.binding.Notification;
  29 import org.opendaylight.yangtools.yang.binding.NotificationListener;
  30 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  31 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  32
  33 public class BindingDOMNotificationServiceAdapter implements NotificationService, AutoCloseable {
  34
  35     public static final Factory<NotificationService> BUILDER_FACTORY = new Factory<NotificationService>() {
  36
  37         @Override
  38         public BindingDOMAdapterBuilder<NotificationService> newBuilder() {
  39             return new Builder();
  40         }
  41
  42     };
  43     private final BindingNormalizedNodeSerializer codec;
  44     private final DOMNotificationService domNotifService;
  45     private final NotificationInvokerFactory notificationInvokerFactory;
  46
  47     public BindingDOMNotificationServiceAdapter(BindingNormalizedNodeSerializer codec, DOMNotificationService domNotifService, NotificationInvokerFactory notificationInvokerFactory) {
  48         this.codec = codec;
  49         this.domNotifService = domNotifService;
  50         this.notificationInvokerFactory = notificationInvokerFactory;
  51     }
  52
  53     @Override
  54     public <T extends NotificationListener> ListenerRegistration<T> registerNotificationListener(T listener) {
  55         final NotificationInvokerFactory.NotificationInvoker invoker = notificationInvokerFactory.invokerFor(listener);
  56         final DOMNotificationListener domListener = new NotificationInvokerImpl(invoker);
  57         final Collection<SchemaPath> schemaPaths = convertNotifTypesToSchemaPath(invoker.getSupportedNotifications());
  58         final ListenerRegistration<DOMNotificationListener> domRegistration =
  59                 domNotifService.registerNotificationListener(domListener, schemaPaths);
  60         return new ListenerRegistrationImpl<>(listener, domRegistration);
  61     }
  62
  63
  64
  65     private Collection<SchemaPath> convertNotifTypesToSchemaPath(Set<Class<? extends Notification>> notificationTypes) {
  66         final List<SchemaPath> schemaPaths = new ArrayList<>();
  67         for (Class<? extends Notification> notificationType : notificationTypes) {
  68             schemaPaths.add(SchemaPath.create(true, BindingReflections.findQName(notificationType)));
  69         }
  70         return schemaPaths;
  71     }
  72
  73     @Override
  74     public void close() throws Exception {
  75
  76     }
  77
  78     private static class ListenerRegistrationImpl<T extends NotificationListener> extends AbstractListenerRegistration<T> {
  79         private final ListenerRegistration<?> listenerRegistration;
  80
  81         public ListenerRegistrationImpl(T listener, ListenerRegistration<?> listenerRegistration) {
  82             super(listener);
  83             this.listenerRegistration = listenerRegistration;
  84         }
  85
  86         @Override
  87         protected void removeRegistration() {
  88             listenerRegistration.close();
  89         }
  90     }
  91
  92     private class NotificationInvokerImpl implements DOMNotificationListener {
  93         private final NotificationInvokerFactory.NotificationInvoker invoker;
  94
  95         public NotificationInvokerImpl(NotificationInvokerFactory.NotificationInvoker invoker) {
  96             this.invoker = invoker;
  97         }
  98
  99         @Override
 100         public void onNotification(@Nonnull DOMNotification notification) {
 101             final Notification baNotification =
 102                     codec.fromNormalizedNodeNotification(notification.getType(), notification.getBody());
 103             invoker.getInvocationProxy().onNotification(baNotification);
 104
 105         }
 106     }
 107
 108     private static class Builder extends BindingDOMAdapterBuilder<NotificationService> {
 109
 110
 111         @Override
 112         protected NotificationService createInstance(BindingToNormalizedNodeCodec codec,
 113                 ClassToInstanceMap<DOMService> delegates) {
 114             DOMNotificationService domNotification = delegates.getInstance(DOMNotificationService.class);
 115             NotificationInvokerFactory invokerFactory = SingletonHolder.INVOKER_FACTORY;
 116             return new BindingDOMNotificationServiceAdapter(codec.getCodecRegistry(), domNotification, invokerFactory);
 117         }
 118
 119         @Override
 120         public Set<? extends Class<? extends DOMService>> getRequiredDelegates() {
 121             return ImmutableSet.of(DOMNotificationService.class);
 122         }
 123
 124
 125
 126     }
 127 }