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;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
36 * Listens on capabilities changes in data store and publishes them to base
37 * netconf notification stream listener.
39 public final class CapabilityChangeNotificationProducer extends OperationalDatastoreListener<Capabilities> {
41 private static final InstanceIdentifier<Capabilities> CAPABILITIES_INSTANCE_IDENTIFIER =
42 InstanceIdentifier.create(NetconfState.class).child(Capabilities.class);
43 private static final Logger LOG = LoggerFactory.getLogger(CapabilityChangeNotificationProducer.class);
45 private final BaseNotificationPublisherRegistration baseNotificationPublisherRegistration;
46 private final ListenerRegistration capabilityChangeListenerRegistration;
48 public CapabilityChangeNotificationProducer(final NetconfNotificationCollector netconfNotificationCollector,
49 final DataBroker dataBroker) {
50 super(CAPABILITIES_INSTANCE_IDENTIFIER);
51 this.baseNotificationPublisherRegistration = netconfNotificationCollector.registerBaseNotificationPublisher();
52 this.capabilityChangeListenerRegistration = registerOnChanges(dataBroker);
56 public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<Capabilities>> changes) {
57 for (DataTreeModification<Capabilities> change : changes) {
58 final DataObjectModification<Capabilities> rootNode = change.getRootNode();
59 final DataObjectModification.ModificationType modificationType = rootNode.getModificationType();
60 switch (modificationType) {
62 final Capabilities dataAfter = rootNode.getDataAfter();
63 final Capabilities dataBefore = rootNode.getDataBefore();
64 final Set<Uri> before = dataBefore != null ? ImmutableSet.copyOf(dataBefore.getCapability()) :
65 Collections.emptySet();
66 final Set<Uri> after = dataAfter != null ? ImmutableSet.copyOf(dataAfter.getCapability()) :
67 Collections.emptySet();
68 final Set<Uri> added = Sets.difference(after, before);
69 final Set<Uri> removed = Sets.difference(before, after);
70 publishNotification(added, removed);
74 final Capabilities dataBeforeDelete = rootNode.getDataBefore();
75 if (dataBeforeDelete != null) {
76 final Set<Uri> removed = ImmutableSet.copyOf(dataBeforeDelete.getCapability());
77 publishNotification(Collections.emptySet(), removed);
82 LOG.debug("Received intentionally unhandled type: {}.", modificationType);
88 private void publishNotification(Set<Uri> added, Set<Uri> removed) {
89 final NetconfCapabilityChangeBuilder netconfCapabilityChangeBuilder = new NetconfCapabilityChangeBuilder();
90 netconfCapabilityChangeBuilder.setChangedBy(new ChangedByBuilder().setServerOrUser(new ServerBuilder()
91 .setServer(true).build()).build());
92 netconfCapabilityChangeBuilder.setAddedCapability(ImmutableList.copyOf(added));
93 netconfCapabilityChangeBuilder.setDeletedCapability(ImmutableList.copyOf(removed));
94 // TODO modified should be computed ... but why ?
95 netconfCapabilityChangeBuilder.setModifiedCapability(Collections.<Uri>emptyList());
96 baseNotificationPublisherRegistration.onCapabilityChanged(netconfCapabilityChangeBuilder.build());
100 * Invoked by blueprint.
102 public void close() {
103 if (baseNotificationPublisherRegistration != null) {
104 baseNotificationPublisherRegistration.close();
106 if (capabilityChangeListenerRegistration != null) {
107 capabilityChangeListenerRegistration.close();