2 * Copyright (c) 2015 Ericsson India Global Services Pvt Ltd. 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
8 package org.opendaylight.vpnservice.dhcpservice;
10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
11 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
12 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
14 import org.opendaylight.vpnservice.dhcpservice.api.DHCPMConstants;
15 import org.opendaylight.vpnservice.mdsalutil.*;
16 import org.opendaylight.vpnservice.mdsalutil.interfaces.IMdsalApiManager;
17 import org.opendaylight.vpnservice.mdsalutil.packet.IPProtocols;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
26 import java.math.BigInteger;
27 import java.util.ArrayList;
28 import java.util.List;
30 public class NodeListener extends AbstractDataChangeListener<Node> implements AutoCloseable {
32 private static final Logger LOG = LoggerFactory.getLogger(NodeListener.class);
34 private IMdsalApiManager mdsalManager;
35 private ListenerRegistration<DataChangeListener> listenerRegistration;
36 private final DataBroker broker;
37 private DhcpManager dhcpManager;
39 public NodeListener(final DataBroker db, final DhcpManager dhcpMgr) {
42 dhcpManager = dhcpMgr;
46 private void registerListener(final DataBroker db) {
48 listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
49 getWildCardPath(), NodeListener.this, AsyncDataBroker.DataChangeScope.SUBTREE);
50 } catch (final Exception e) {
51 LOG.error("NodeListener: DataChange listener registration fail!", e);
52 throw new IllegalStateException("NodeListener: registration Listener failed.", e);
56 private InstanceIdentifier<Node> getWildCardPath() {
57 return InstanceIdentifier.create(Nodes.class).child(Node.class);
62 protected void remove(InstanceIdentifier<Node> identifier, Node del) {
67 protected void update(InstanceIdentifier<Node> identifier, Node original, Node update) {
72 protected void add(InstanceIdentifier<Node> identifier, Node add) {
73 NodeId nodeId = add.getId();
74 String[] node = nodeId.getValue().split(":");
75 BigInteger dpId = new BigInteger(node[1]);
76 dhcpManager.installDhcpEntries(dpId);
80 public void close() throws Exception {
81 if (listenerRegistration != null) {
83 listenerRegistration.close();
84 } catch (final Exception e) {
85 LOG.error("Error when cleaning up NodeListener.", e);
87 listenerRegistration = null;
88 //ToDo: Should we delete DHCP flows when we are closed?
90 LOG.debug("Node Listener Closed");