applications/notification-supplier/src/main/java/org/opendaylight/openflowplugin/applications/notification/supplier/impl/AbstractNotificationSupplierForItemRoot.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
   9 package org.opendaylight.openflowplugin.applications.notification.supplier.impl;
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.Map.Entry;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  15 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
  16 import org.opendaylight.openflowplugin.applications.notification.supplier.NotificationSupplierForItemRoot;
  17 import org.opendaylight.yangtools.yang.binding.DataObject;
  18 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  19 import org.opendaylight.yangtools.yang.binding.Notification;
  20
  21 /**
  22  * Class is package protected abstract implementation for all Root Items
  23  * Notification Suppliers
  24  *
  25  * @param <O> - data tree item Object
  26  * @param <C> - Create notification
  27  * @param <D> - Delete notification
  28  */
  29 abstract class AbstractNotificationSupplierForItemRoot<O extends DataObject,
  30                                                C extends Notification,
  31                                                D extends Notification>
  32                     extends AbstractNotificationSupplierBase<O>
  33                     implements NotificationSupplierForItemRoot<O, C, D> {
  34
  35     private final NotificationProviderService notificationProviderService;
  36
  37     /**
  38      * Default constructor for all Root Item Notification Supplier implementation
  39      *
  40      * @param notificationProviderService - notification publisher
  41      * @param db - DataBroker for DataChangeEvent registration
  42      * @param clazz - Statistics Notification Class
  43      */
  44     public AbstractNotificationSupplierForItemRoot(final NotificationProviderService notificationProviderService, final DataBroker db,
  45             final Class<O> clazz) {
  46         super(db, clazz);
  47         this.notificationProviderService = Preconditions.checkNotNull(notificationProviderService);
  48     }
  49
  50     @Override
  51     public void onDataChanged(final AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  52         Preconditions.checkArgument(change != null, "ChangeEvent can not be null!");
  53         if (change.getCreatedData() != null && ! (change.getCreatedData().isEmpty())) {
  54             for (final Entry<InstanceIdentifier<?>, DataObject> createDataObj : change.getCreatedData().entrySet()) {
  55                 if (clazz.isAssignableFrom(createDataObj.getKey().getTargetType())) {
  56                     final InstanceIdentifier<O> ii = createDataObj.getKey().firstIdentifierOf(clazz);
  57                     final C notif = createNotification((O) createDataObj.getValue(), ii);
  58                     if (notif != null) {
  59                         notificationProviderService.publish(notif);
  60                     }
  61                 }
  62             }
  63         }
  64
  65         if (change.getRemovedPaths() != null && !(change.getRemovedPaths().isEmpty())) {
  66             for (final InstanceIdentifier<?> deleteDataPath : change.getRemovedPaths()) {
  67                 if (clazz.isAssignableFrom(deleteDataPath.getTargetType())) {
  68                     final D notif = deleteNotification(deleteDataPath.firstIdentifierOf(clazz));
  69                     if (notif != null) {
  70                         notificationProviderService.publish(notif);
  71                     }
  72                 }
  73             }
  74         }
  75     }
  76 }
  77