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>
40 implements AutoCloseable {
42 private static final InstanceIdentifier<Capabilities> CAPABILITIES_INSTANCE_IDENTIFIER =
43 InstanceIdentifier.create(NetconfState.class).child(Capabilities.class);
44 private static final Logger LOG = LoggerFactory.getLogger(CapabilityChangeNotificationProducer.class);
46 private final BaseNotificationPublisherRegistration baseNotificationPublisherRegistration;
47 private final ListenerRegistration capabilityChangeListenerRegistration;
49 public CapabilityChangeNotificationProducer(final NetconfNotificationCollector netconfNotificationCollector,
50 final DataBroker dataBroker) {
51 super(CAPABILITIES_INSTANCE_IDENTIFIER);
52 this.baseNotificationPublisherRegistration = netconfNotificationCollector.registerBaseNotificationPublisher();
53 this.capabilityChangeListenerRegistration = registerOnChanges(dataBroker);
57 public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<Capabilities>> changes) {
58 for (DataTreeModification<Capabilities> change : changes) {
59 final DataObjectModification<Capabilities> rootNode = change.getRootNode();
60 final DataObjectModification.ModificationType modificationType = rootNode.getModificationType();
61 switch (modificationType) {
63 final Capabilities dataAfter = rootNode.getDataAfter();
64 final Capabilities dataBefore = rootNode.getDataBefore();
65 final Set<Uri> before = dataBefore != null ? ImmutableSet.copyOf(dataBefore.getCapability()) :
66 Collections.emptySet();
67 final Set<Uri> after = dataAfter != null ? ImmutableSet.copyOf(dataAfter.getCapability()) :
68 Collections.emptySet();
69 final Set<Uri> added = Sets.difference(after, before);
70 final Set<Uri> removed = Sets.difference(before, after);
71 publishNotification(added, removed);
75 final Capabilities dataBeforeDelete = rootNode.getDataBefore();
76 if (dataBeforeDelete != null) {
77 final Set<Uri> removed = ImmutableSet.copyOf(dataBeforeDelete.getCapability());
78 publishNotification(Collections.emptySet(), removed);
83 LOG.debug("Received intentionally unhandled type: {}.", modificationType);
89 private void publishNotification(Set<Uri> added, Set<Uri> removed) {
90 final NetconfCapabilityChangeBuilder netconfCapabilityChangeBuilder = new NetconfCapabilityChangeBuilder();
91 netconfCapabilityChangeBuilder.setChangedBy(new ChangedByBuilder().setServerOrUser(new ServerBuilder()
92 .setServer(true).build()).build());
93 netconfCapabilityChangeBuilder.setAddedCapability(ImmutableList.copyOf(added));
94 netconfCapabilityChangeBuilder.setDeletedCapability(ImmutableList.copyOf(removed));
95 // TODO modified should be computed ... but why ?
96 netconfCapabilityChangeBuilder.setModifiedCapability(Collections.<Uri>emptyList());
97 baseNotificationPublisherRegistration.onCapabilityChanged(netconfCapabilityChangeBuilder.build());
101 * Invoked by blueprint.
103 public void close() {
104 if (baseNotificationPublisherRegistration != null) {
105 baseNotificationPublisherRegistration.close();
107 if (capabilityChangeListenerRegistration != null) {
108 capabilityChangeListenerRegistration.close();