2 * Copyright (c) 2016 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.netvirt.neutronvpn;
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.DataChangeScope;
13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
14 import org.opendaylight.genius.mdsalutil.AbstractDataChangeListener;
15 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.l3.attributes.Routes;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.Routers;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.Router;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
20 import org.opendaylight.yangtools.concepts.ListenerRegistration;
21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
24 import java.util.ArrayList;
25 import java.util.Iterator;
26 import java.util.List;
29 public class NeutronRouterChangeListener extends AbstractDataChangeListener<Router> implements AutoCloseable {
30 private static final Logger LOG = LoggerFactory.getLogger(NeutronRouterChangeListener.class);
32 private ListenerRegistration<DataChangeListener> listenerRegistration;
33 private final DataBroker broker;
34 private NeutronvpnManager nvpnManager;
35 private NeutronvpnNatManager nvpnNatManager;
38 public NeutronRouterChangeListener(final DataBroker db, NeutronvpnManager nVpnMgr, NeutronvpnNatManager
42 nvpnManager = nVpnMgr;
43 nvpnNatManager = nVpnNatMgr;
48 public void close() throws Exception {
49 if (listenerRegistration != null) {
51 listenerRegistration.close();
52 } catch (final Exception e) {
53 LOG.error("Error when cleaning up DataChangeListener.", e);
55 listenerRegistration = null;
57 LOG.info("N_Router listener Closed");
61 private void registerListener(final DataBroker db) {
63 listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
64 InstanceIdentifier.create(Neutron.class).child(Routers.class).child(Router.class),
65 NeutronRouterChangeListener.this, DataChangeScope.SUBTREE);
66 } catch (final Exception e) {
67 LOG.error("Neutron Manager Router DataChange listener registration fail!", e);
68 throw new IllegalStateException("Neutron Manager Router DataChange listener registration failed.", e);
73 protected void add(InstanceIdentifier<Router> identifier, Router input) {
74 if (LOG.isTraceEnabled()) {
75 LOG.trace("Adding Router : key: " + identifier + ", value=" + input);
77 // Create internal VPN
78 nvpnManager.createL3InternalVpn(input.getUuid(), null, null, null, null, null, input.getUuid(), null);
79 NeutronvpnUtils.addToRouterCache(input);
83 protected void remove(InstanceIdentifier<Router> identifier, Router input) {
84 if (LOG.isTraceEnabled()) {
85 LOG.trace("Removing router : key: " + identifier + ", value=" + input);
87 Uuid routerId = input.getUuid();
88 //NOTE: Pass an empty routerSubnetIds list, as router interfaces
89 //will be removed from VPN by invocations from NeutronPortChangeListener
90 List<Uuid> routerSubnetIds = new ArrayList<>();
91 nvpnManager.handleNeutronRouterDeleted(routerId, routerSubnetIds);
92 NeutronvpnUtils.removeFromRouterCache(input);
93 // Handle router deletion for the NAT service
94 if (input.getExternalGatewayInfo() != null) {
95 Uuid extNetId = input.getExternalGatewayInfo().getExternalNetworkId();
96 nvpnNatManager.removeExternalNetworkFromRouter(extNetId, input);
101 protected void update(InstanceIdentifier<Router> identifier, Router original, Router update) {
102 if (LOG.isTraceEnabled()) {
103 LOG.trace("Updating Router : key: " + identifier + ", original value=" + original + ", update value=" +
106 Uuid routerId = update.getUuid();
107 Uuid vpnId = NeutronvpnUtils.getVpnForRouter(broker, routerId, true);
108 // internal vpn always present in case external vpn not found
112 List<Routes> oldRoutes = (original.getRoutes() != null) ? original.getRoutes() : new ArrayList<>();
113 List<Routes> newRoutes = (update.getRoutes() != null) ? update.getRoutes() : new ArrayList<>();
115 if (!oldRoutes.equals(newRoutes)) {
116 Iterator<Routes> iterator = newRoutes.iterator();
117 while (iterator.hasNext()) {
118 Routes route = iterator.next();
119 if (oldRoutes.remove(route)) {
123 nvpnManager.addAdjacencyforExtraRoute(newRoutes, true, null);
124 if (!oldRoutes.isEmpty()) {
125 nvpnManager.removeAdjacencyforExtraRoute(oldRoutes);
128 nvpnNatManager.handleExternalNetworkForRouter(original, update);