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.controller.config.yang.netconf.mdsal.notification;
11 import com.google.common.collect.ImmutableList;
12 import com.google.common.collect.ImmutableSet;
13 import com.google.common.collect.Sets;
14 import java.util.Collection;
15 import java.util.Collections;
17 import javax.annotation.Nonnull;
18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
19 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
20 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
21 import org.opendaylight.netconf.notifications.BaseNotificationPublisherRegistration;
22 import org.opendaylight.netconf.notifications.NetconfNotificationCollector;
23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.NetconfState;
25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.netconf.state.Capabilities;
26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfCapabilityChangeBuilder;
27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.changed.by.parms.ChangedByBuilder;
28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.changed.by.parms.changed.by.server.or.user.ServerBuilder;
29 import org.opendaylight.yangtools.concepts.ListenerRegistration;
30 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
34 * Listens on capabilities changes in data store and publishes them to base
35 * netconf notification stream listener.
37 public final class CapabilityChangeNotificationProducer extends OperationalDatastoreListener<Capabilities> {
39 private static final InstanceIdentifier<Capabilities> CAPABILITIES_INSTANCE_IDENTIFIER =
40 InstanceIdentifier.create(NetconfState.class).child(Capabilities.class);
42 private final BaseNotificationPublisherRegistration baseNotificationPublisherRegistration;
43 private final ListenerRegistration capabilityChangeListenerRegistration;
45 public CapabilityChangeNotificationProducer(final NetconfNotificationCollector netconfNotificationCollector,
46 final DataBroker dataBroker) {
47 super(CAPABILITIES_INSTANCE_IDENTIFIER);
48 this.baseNotificationPublisherRegistration = netconfNotificationCollector.registerBaseNotificationPublisher();
49 this.capabilityChangeListenerRegistration = registerOnChanges(dataBroker);
53 public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<Capabilities>> changes) {
54 for (DataTreeModification<Capabilities> change : changes) {
55 final DataObjectModification<Capabilities> rootNode = change.getRootNode();
56 final DataObjectModification.ModificationType modificationType = rootNode.getModificationType();
57 switch (modificationType) {
59 final Capabilities dataAfter = rootNode.getDataAfter();
60 final Capabilities dataBefore = rootNode.getDataBefore();
61 final Set<Uri> before = dataBefore != null ? ImmutableSet.copyOf(dataBefore.getCapability()) : Collections.emptySet();
62 final Set<Uri> after = dataAfter != null ? ImmutableSet.copyOf(dataAfter.getCapability()) : Collections.emptySet();
63 final Set<Uri> added = Sets.difference(after, before);
64 final Set<Uri> removed = Sets.difference(before, after);
65 publishNotification(added, removed);
69 final Capabilities dataBeforeDelete = rootNode.getDataBefore();
70 if (dataBeforeDelete != null) {
71 final Set<Uri> removed = ImmutableSet.copyOf(dataBeforeDelete.getCapability());
72 publishNotification(Collections.emptySet(), removed);
81 private void publishNotification(Set<Uri> added, Set<Uri> removed) {
82 final NetconfCapabilityChangeBuilder netconfCapabilityChangeBuilder = new NetconfCapabilityChangeBuilder();
83 netconfCapabilityChangeBuilder.setChangedBy(new ChangedByBuilder().setServerOrUser(new ServerBuilder().setServer(true).build()).build());
84 netconfCapabilityChangeBuilder.setAddedCapability(ImmutableList.copyOf(added));
85 netconfCapabilityChangeBuilder.setDeletedCapability(ImmutableList.copyOf(removed));
86 // TODO modified should be computed ... but why ?
87 netconfCapabilityChangeBuilder.setModifiedCapability(Collections.<Uri>emptyList());
88 baseNotificationPublisherRegistration.onCapabilityChanged(netconfCapabilityChangeBuilder.build());
95 if (baseNotificationPublisherRegistration != null) {
96 baseNotificationPublisherRegistration.close();
98 if (capabilityChangeListenerRegistration != null) {
99 capabilityChangeListenerRegistration.close();