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 java.math.BigInteger;
11 import java.util.List;
13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
14 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
17 import org.opendaylight.vpnservice.dhcpservice.api.DHCPMConstants;
18 import org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener;
19 import org.opendaylight.vpnservice.mdsalutil.MDSALUtil;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
23 import org.opendaylight.yangtools.concepts.ListenerRegistration;
24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
28 public class NodeListener extends AbstractDataChangeListener<Node> implements AutoCloseable {
30 private static final Logger LOG = LoggerFactory.getLogger(NodeListener.class);
32 private ListenerRegistration<DataChangeListener> listenerRegistration;
33 private final DataBroker broker;
34 private DhcpManager dhcpManager;
35 private DhcpExternalTunnelManager dhcpExternalTunnelManager;
37 public NodeListener(final DataBroker db, final DhcpManager dhcpMgr, final DhcpExternalTunnelManager dhcpExternalTunnelManager) {
40 dhcpManager = dhcpMgr;
41 this.dhcpExternalTunnelManager = dhcpExternalTunnelManager;
45 private void registerListener(final DataBroker db) {
47 listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
48 getWildCardPath(), NodeListener.this, AsyncDataBroker.DataChangeScope.SUBTREE);
49 } catch (final Exception e) {
50 LOG.error("NodeListener: DataChange listener registration fail!", e);
51 throw new IllegalStateException("NodeListener: registration Listener failed.", e);
55 private InstanceIdentifier<Node> getWildCardPath() {
56 return InstanceIdentifier.create(Nodes.class).child(Node.class);
60 protected void remove(InstanceIdentifier<Node> identifier, Node del) {
61 NodeId nodeId = del.getId();
62 BigInteger dpnId = MDSALUtil.getDpnIdFromNodeName(nodeId);
63 List<BigInteger> listOfDpns = DhcpServiceUtils.getListOfDpns(broker);
64 dhcpExternalTunnelManager.handleDesignatedDpnDown(dpnId, listOfDpns);
68 protected void update(InstanceIdentifier<Node> identifier, Node original, Node update) {
73 protected void add(InstanceIdentifier<Node> identifier, Node add) {
74 NodeId nodeId = add.getId();
75 String[] node = nodeId.getValue().split(":");
77 LOG.warn("Unexpected nodeId {}", nodeId.getValue());
80 BigInteger dpId = new BigInteger(node[1]);
81 dhcpManager.setupTableMissForDhcpTable(dpId);
82 dhcpExternalTunnelManager.installDhcpDropActionOnDpn(dpId);
83 List<BigInteger> listOfDpns = DhcpServiceUtils.getListOfDpns(broker);
84 dhcpExternalTunnelManager.handleDesignatedDpnDown(DHCPMConstants.INVALID_DPID, listOfDpns);
88 public void close() throws Exception {
89 if (listenerRegistration != null) {
91 listenerRegistration.close();
92 } catch (final Exception e) {
93 LOG.error("Error when cleaning up NodeListener.", e);
95 listenerRegistration = null;
96 //ToDo: Should we delete DHCP flows when we are closed?
98 LOG.debug("Node Listener Closed");