2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
9 package org.opendaylight.openflowplugin.applications.notification.supplier.impl;
11 import com.google.common.base.Preconditions;
12 import java.util.Collection;
13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
14 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
15 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
16 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
17 import org.opendaylight.openflowplugin.applications.notification.supplier.NotificationSupplierForItemRoot;
18 import org.opendaylight.yangtools.yang.binding.DataObject;
19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
20 import org.opendaylight.yangtools.yang.binding.Notification;
23 * Class is package protected abstract implementation for all Root Items
24 * Notification Suppliers.
26 * @param <O> - data tree item Object
27 * @param <C> - Create notification
28 * @param <D> - Delete notification
30 public abstract class AbstractNotificationSupplierForItemRoot<O extends DataObject, C extends Notification, D extends
31 Notification> extends AbstractNotificationSupplierBase<O> implements NotificationSupplierForItemRoot<O, C, D> {
33 private final NotificationProviderService notificationProviderService;
36 * Default constructor for all Root Item Notification Supplier implementation.
38 * @param notificationProviderService - notification publisher
39 * @param db - DataBroker for DataTreeChangeListener registration
40 * @param clazz - Statistics Notification Class
42 public AbstractNotificationSupplierForItemRoot(final NotificationProviderService notificationProviderService,
43 final DataBroker db, final Class<O> clazz) {
45 this.notificationProviderService = Preconditions.checkNotNull(notificationProviderService);
49 public void onDataTreeChanged(Collection<DataTreeModification<O>> changes) {
51 Preconditions.checkNotNull(changes, "Changes may not be null!");
53 for (DataTreeModification<O> change : changes) {
54 final InstanceIdentifier<O> key = change.getRootPath().getRootIdentifier();
55 final DataObjectModification<O> mod = change.getRootNode();
56 switch (mod.getModificationType()) {
58 remove(key, mod.getDataBefore());
60 case SUBTREE_MODIFIED:
61 update(key, mod.getDataBefore(), mod.getDataAfter());
64 if (mod.getDataBefore() == null) {
65 add(key, mod.getDataAfter());
67 update(key, mod.getDataBefore(), mod.getDataAfter());
71 throw new IllegalArgumentException("Unhandled modification type " + mod.getModificationType());
77 public void add(InstanceIdentifier<O> identifier, O add) {
79 final C notif = createNotification(add, identifier);
81 notificationProviderService.publish(notif);
85 public void remove(InstanceIdentifier<O> identifier, O del) {
86 final D notif = deleteNotification(identifier.firstIdentifierOf(clazz));
88 notificationProviderService.publish(notif);
92 public void update(InstanceIdentifier<O> identifier, O before, O after) {