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 com.google.common.base.Optional;
11 import java.util.ArrayList;
12 import java.util.HashMap;
13 import java.util.Iterator;
14 import java.util.List;
15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
16 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
17 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
19 import org.opendaylight.genius.mdsalutil.AbstractDataChangeListener;
20 import org.opendaylight.genius.mdsalutil.NwConstants;
21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.l3.attributes.Routes;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.Routers;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l3.rev150712.routers.attributes.routers.Router;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.InterVpnLinkState;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.links.InterVpnLink;
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 public class NeutronRouterChangeListener extends AbstractDataChangeListener<Router> implements AutoCloseable {
34 private static final Logger LOG = LoggerFactory.getLogger(NeutronRouterChangeListener.class);
35 private ListenerRegistration<DataChangeListener> listenerRegistration;
36 private final DataBroker dataBroker;
37 private final NeutronvpnManager nvpnManager;
38 private final NeutronvpnNatManager nvpnNatManager;
39 private final NeutronSubnetGwMacResolver gwMacResolver;
41 public NeutronRouterChangeListener(final DataBroker dataBroker, final NeutronvpnManager nVpnMgr,
42 final NeutronvpnNatManager nVpnNatMgr, NeutronSubnetGwMacResolver gwMacResolver) {
44 this.dataBroker = dataBroker;
45 nvpnManager = nVpnMgr;
46 nvpnNatManager = nVpnNatMgr;
47 this.gwMacResolver = gwMacResolver;
51 LOG.info("{} start", getClass().getSimpleName());
52 listenerRegistration = dataBroker.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
53 getWildCardPath(), this, DataChangeScope.SUBTREE);
56 private InstanceIdentifier<Router> getWildCardPath() {
57 return InstanceIdentifier.create(Neutron.class).child(Routers.class).child(Router.class);
61 public void close() throws Exception {
62 if (listenerRegistration != null) {
63 listenerRegistration.close();
64 listenerRegistration = null;
66 LOG.info("{} close", getClass().getSimpleName());
70 protected void add(InstanceIdentifier<Router> identifier, Router input) {
71 if (LOG.isTraceEnabled()) {
72 LOG.trace("Adding Router : key: " + identifier + ", value=" + input);
74 // Create internal VPN
75 nvpnManager.createL3InternalVpn(input.getUuid(), null, null, null, null, null, input.getUuid(), null);
76 NeutronvpnUtils.addToRouterCache(input);
77 gwMacResolver.sendArpRequestsToExtGateways(input);
81 protected void remove(InstanceIdentifier<Router> identifier, Router input) {
82 if (LOG.isTraceEnabled()) {
83 LOG.trace("Removing router : key: " + identifier + ", value=" + input);
85 Uuid routerId = input.getUuid();
86 //NOTE: Pass an empty routerSubnetIds list, as router interfaces
87 //will be removed from VPN by invocations from NeutronPortChangeListener
88 List<Uuid> routerSubnetIds = new ArrayList<>();
89 nvpnManager.handleNeutronRouterDeleted(routerId, routerSubnetIds);
90 NeutronvpnUtils.removeFromRouterCache(input);
92 // Handle router deletion for the NAT service
93 if (input.getExternalGatewayInfo() != null) {
94 Uuid extNetId = input.getExternalGatewayInfo().getExternalNetworkId();
95 nvpnNatManager.removeExternalNetworkFromRouter(extNetId, input);
101 protected void update(InstanceIdentifier<Router> identifier, Router original, Router update) {
102 LOG.trace("Updating Router : key: {}, original value={}, update value={}", identifier, original, update);
103 Uuid routerId = update.getUuid();
104 Uuid vpnId = NeutronvpnUtils.getVpnForRouter(dataBroker, routerId, true);
105 // internal vpn always present in case external vpn not found
109 List<Routes> oldRoutes = (original.getRoutes() != null) ? original.getRoutes() : new ArrayList<Routes>();
110 List<Routes> newRoutes = (update.getRoutes() != null) ? update.getRoutes() : new ArrayList<Routes>();
111 if (!oldRoutes.equals(newRoutes)) {
112 Iterator<Routes> iterator = newRoutes.iterator();
113 while (iterator.hasNext()) {
114 Routes route = iterator.next();
115 if (oldRoutes.remove(route)) {
120 handleChangedRoutes(vpnId, newRoutes, NwConstants.ADD_FLOW);
122 if (!oldRoutes.isEmpty()) {
123 handleChangedRoutes(vpnId, oldRoutes, NwConstants.DEL_FLOW);
127 nvpnNatManager.handleExternalNetworkForRouter(original, update);
128 gwMacResolver.sendArpRequestsToExtGateways(update);
131 private void handleChangedRoutes(Uuid vpnName, List<Routes> routes, int addedOrRemoved) {
132 // Some routes may point to an InterVpnLink's endpoint, lets treat them differently
133 List<Routes> interVpnLinkRoutes = new ArrayList<Routes>();
134 List<Routes> otherRoutes = new ArrayList<Routes>();
135 HashMap<String, InterVpnLink> nexthopsXinterVpnLinks = new HashMap<String, InterVpnLink>();
136 for ( Routes route : routes ) {
137 String nextHop = String.valueOf(route.getNexthop().getValue());
138 // Nexthop is another VPN?
139 Optional<InterVpnLink> interVpnLink = NeutronvpnUtils.getInterVpnLinkByEndpointIp(dataBroker, nextHop);
140 if ( interVpnLink.isPresent() ) {
141 Optional<InterVpnLinkState> interVpnLinkState =
142 NeutronvpnUtils.getInterVpnLinkState(dataBroker, interVpnLink.get().getName());
143 if ( interVpnLinkState.isPresent() && interVpnLinkState.get().getState() == InterVpnLinkState.State.Active) {
144 interVpnLinkRoutes.add(route);
145 nexthopsXinterVpnLinks.put(nextHop, interVpnLink.get());
147 LOG.warn("Failed installing route to {}. Reason: InterVPNLink {} is not Active",
148 String.valueOf(route.getDestination().getValue()), interVpnLink.get().getName());
151 otherRoutes.add(route);
155 if ( addedOrRemoved == NwConstants.ADD_FLOW ) {
156 nvpnManager.addInterVpnRoutes(vpnName, interVpnLinkRoutes, nexthopsXinterVpnLinks);
157 nvpnManager.addAdjacencyforExtraRoute(vpnName, otherRoutes);
159 nvpnManager.removeAdjacencyforExtraRoute(vpnName, otherRoutes);
160 nvpnManager.removeInterVpnRoutes(vpnName, interVpnLinkRoutes, nexthopsXinterVpnLinks);