2 * Copyright (c) 2016 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.groupbasedpolicy.renderer.vpp.listener;
11 import java.util.Collection;
13 import javax.annotation.Nonnull;
15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
16 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
17 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
18 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
19 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
21 import org.opendaylight.groupbasedpolicy.renderer.vpp.event.NodeOperEvent;
22 import org.opendaylight.groupbasedpolicy.renderer.vpp.manager.VppNodeManager;
23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
28 import org.opendaylight.yangtools.concepts.ListenerRegistration;
29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
30 import org.slf4j.Logger;
31 import org.slf4j.LoggerFactory;
33 import com.google.common.base.Preconditions;
34 import com.google.common.eventbus.EventBus;
36 public class VppNodeListener implements DataTreeChangeListener<Node>, AutoCloseable {
38 private static final Logger LOG = LoggerFactory.getLogger(VppNodeListener.class);
39 private static final TopologyId TOPOLOGY_NETCONF = new TopologyId("topology-netconf");
41 private final ListenerRegistration<VppNodeListener> listenerRegistration;
42 private final VppNodeManager nodeManager;
43 private final EventBus eventBus;
45 public VppNodeListener(DataBroker dataBroker, VppNodeManager nodeManager, EventBus eventBus) {
46 this.nodeManager = Preconditions.checkNotNull(nodeManager);
47 this.eventBus = Preconditions.checkNotNull(eventBus);
49 final DataTreeIdentifier<Node> networkTopologyPath = new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
50 InstanceIdentifier.builder(NetworkTopology.class)
51 .child(Topology.class, new TopologyKey(TOPOLOGY_NETCONF))
54 listenerRegistration =
55 Preconditions.checkNotNull(dataBroker.registerDataTreeChangeListener(networkTopologyPath, this));
56 LOG.info("Network-Topology VppNodelistener registered");
60 public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<Node>> changes) {
61 LOG.debug("Topology Node changed. Changes {}", changes);
63 for (DataTreeModification<Node> modification : changes) {
64 DataObjectModification<Node> rootNode = modification.getRootNode();
65 Node dataAfter = rootNode.getDataAfter();
66 Node dataBefore = rootNode.getDataBefore();
68 new NodeOperEvent(modification.getRootPath().getRootIdentifier(), dataBefore, dataAfter);
70 nodeManager.syncNodes(dataAfter, dataBefore);
74 public ListenerRegistration<VppNodeListener> getRegistrationObject() {
75 return listenerRegistration;
79 public void close() throws Exception {
80 listenerRegistration.close();