opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/config/yang/md/sal/binding/impl/NotificationBrokerImplModule.java

   1 /*
   2  * Copyright (c) 2014 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.config.yang.md.sal.binding.impl;
   9
  10 import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
  11 import org.opendaylight.controller.md.sal.binding.api.NotificationService;
  12 import org.opendaylight.controller.md.sal.binding.compat.HeliumNotificationProviderServiceAdapter;
  13 import org.opendaylight.controller.md.sal.binding.compat.HeliumNotificationProviderServiceWithInterestListeners;
  14 import org.opendaylight.controller.md.sal.binding.compat.HydrogenNotificationBrokerImpl;
  15 import org.opendaylight.controller.md.sal.binding.impl.BindingDOMNotificationPublishServiceAdapter;
  16 import org.opendaylight.controller.md.sal.binding.impl.BindingDOMNotificationServiceAdapter;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationPublishService;
  18 import org.opendaylight.controller.md.sal.dom.spi.DOMNotificationSubscriptionListenerRegistry;
  19 import org.opendaylight.controller.sal.binding.codegen.impl.SingletonHolder;
  20
  21 /**
  22 *
  23 */
  24 public final class NotificationBrokerImplModule extends
  25         org.opendaylight.controller.config.yang.md.sal.binding.impl.AbstractNotificationBrokerImplModule {
  26
  27     public NotificationBrokerImplModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier,
  28             final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
  29         super(identifier, dependencyResolver);
  30     }
  31
  32     public NotificationBrokerImplModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier,
  33             final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver,
  34             final NotificationBrokerImplModule oldModule, final java.lang.AutoCloseable oldInstance) {
  35         super(identifier, dependencyResolver, oldModule, oldInstance);
  36     }
  37
  38     @Override
  39     public void validate() {
  40         super.validate();
  41         // Add custom validation for module attributes here.
  42     }
  43
  44     @Override
  45     public java.lang.AutoCloseable createInstance() {
  46
  47         final NotificationPublishService notificationPublishService = getNotificationPublishAdapterDependency();
  48         final NotificationService notificationService = getNotificationAdapterDependency();
  49
  50         if(notificationPublishService != null & notificationService != null) {
  51             return createHeliumAdapter(notificationPublishService,notificationService);
  52         }
  53
  54         /*
  55          *  FIXME: Switch to new broker (which has different threading model)
  56          *  once this change is communicated with downstream users or
  57          *  we will have adapter implementation which will honor Helium
  58          *  threading model for notifications.
  59          */
  60         return new HydrogenNotificationBrokerImpl(SingletonHolder.getDefaultNotificationExecutor());
  61     }
  62
  63     private static AutoCloseable createHeliumAdapter(final NotificationPublishService publishService,
  64             final NotificationService listenService) {
  65         if (listenService instanceof BindingDOMNotificationServiceAdapter
  66                 && publishService instanceof BindingDOMNotificationPublishServiceAdapter) {
  67             final BindingDOMNotificationPublishServiceAdapter castedPublish =
  68                     (BindingDOMNotificationPublishServiceAdapter) publishService;
  69             final BindingDOMNotificationServiceAdapter castedListen =
  70                     (BindingDOMNotificationServiceAdapter) listenService;
  71             final DOMNotificationPublishService domPublishService = castedPublish.getDomPublishService();
  72             if (domPublishService instanceof DOMNotificationSubscriptionListenerRegistry) {
  73                 final DOMNotificationSubscriptionListenerRegistry subsRegistry =
  74                         (DOMNotificationSubscriptionListenerRegistry) domPublishService;
  75                 return new HeliumNotificationProviderServiceWithInterestListeners(castedPublish, castedListen,
  76                         subsRegistry);
  77             }
  78         }
  79         return new HeliumNotificationProviderServiceAdapter(publishService, listenService);
  80     }
  81 }