vpnmanager/vpnmanager-impl/src/main/java/org/opendaylight/vpnservice/VpnInterfaceManager.java

   1 /*
   2  * Copyright (c) 2015 - 2016 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.vpnservice;
   9
  10 import org.opendaylight.vpnservice.utilities.InterfaceUtils;
  11
  12 import com.google.common.util.concurrent.FutureCallback;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.JdkFutureAdapters;
  15
  16 import org.opendaylight.controller.md.sal.binding.api.*;
  17 import org.opendaylight.vpnservice.mdsalutil.*;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.NeutronvpnService;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.PrefixToInterface;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.adjacency.list.AdjacencyKey;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.prefix.to._interface.vpn.ids.Prefixes;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnList;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnListBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfacesBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfacesKey;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.arputil.rev151126.OdlArputilService;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.arputil.rev151126.SendArpResponseInput;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.arputil.rev151126.SendArpResponseInputBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.services.info.BoundServices;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.fibmanager.rev150330.FibEntries;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.fibmanager.rev150330.fibentries.VrfTables;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.fibmanager.rev150330.fibentries.VrfTablesBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.fibmanager.rev150330.fibentries.VrfTablesKey;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.fibmanager.rev150330.vrfentries.VrfEntry;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.fibmanager.rev150330.vrfentries.VrfEntryBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.fibmanager.rev150330.vrfentries.VrfEntryKey;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.IdManagerService;
  42
  43 import java.math.BigInteger;
  44 import java.util.Collection;
  45 import java.util.Iterator;
  46 import java.util.List;
  47 import java.util.ArrayList;
  48 import java.util.concurrent.*;
  49
  50 import com.google.common.base.Optional;
  51
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.neutronvpn.rev150602.NeutronvpnService;
  53 import org.opendaylight.bgpmanager.api.IBgpManager;
  54 import org.opendaylight.fibmanager.api.IFibManager;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rpcs.rev151003.OdlInterfaceRpcService;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rpcs.rev151217.ItmRpcService;
  57 import org.opendaylight.vpnservice.mdsalutil.interfaces.IMdsalApiManager;
  58 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  59 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  60 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  61 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  62 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  63 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfacesState;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.adjacency.list.Adjacency;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.adjacency.list.AdjacencyBuilder;
  66 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnInterfaces;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.Adjacencies;
  68 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnAfConfig;
  69 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnInstances;
  70 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.instances.VpnInstance;
  71 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.instances.VpnInstanceKey;
  72 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterface;
  73 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterfaceKey;
  74 import org.opendaylight.yangtools.yang.common.RpcError;
  75 import org.opendaylight.yangtools.yang.common.RpcResult;
  76 import org.slf4j.Logger;
  77 import org.slf4j.LoggerFactory;
  78
  79 public class VpnInterfaceManager extends AbstractDataChangeListener<VpnInterface> implements AutoCloseable {
  80     private static final Logger LOG = LoggerFactory.getLogger(VpnInterfaceManager.class);
  81     private ListenerRegistration<DataChangeListener> listenerRegistration, opListenerRegistration;
  82     private ConcurrentMap<String, Runnable> vpnIntfMap = new ConcurrentHashMap<String, Runnable>();
  83     private ExecutorService executorService = Executors.newSingleThreadExecutor();
  84     private final DataBroker broker;
  85     private final IBgpManager bgpManager;
  86     private IFibManager fibManager;
  87     private IMdsalApiManager mdsalManager;
  88     private OdlInterfaceRpcService interfaceManager;
  89     private ItmRpcService itmProvider;
  90     private IdManagerService idManager;
  91     private OdlArputilService arpManager;
  92     private NeutronvpnService neuService;
  93     private VpnSubnetRouteHandler vpnSubnetRouteHandler;
  94     private InterfaceStateChangeListener interfaceListener;
  95     private VpnInterfaceOpListener vpnInterfaceOpListener;
  96     private ArpNotificationHandler arpNotificationHandler;
  97     protected enum UpdateRouteAction {
  98         ADVERTISE_ROUTE, WITHDRAW_ROUTE
  99     }
 100     /**
 101      * Responsible for listening to data change related to VPN Interface
 102      * Bind VPN Service on the interface and informs the BGP service
 103      *
 104      * @param db - dataBroker service reference
 105      */
 106     public VpnInterfaceManager(final DataBroker db, final IBgpManager bgpManager, NotificationService notificationService) {
 107         super(VpnInterface.class);
 108         broker = db;
 109         this.bgpManager = bgpManager;
 110         interfaceListener = new InterfaceStateChangeListener(db, this);
 111         vpnInterfaceOpListener = new VpnInterfaceOpListener();
 112         arpNotificationHandler = new ArpNotificationHandler(this, broker);
 113         notificationService.registerNotificationListener(arpNotificationHandler);
 114         vpnSubnetRouteHandler = new VpnSubnetRouteHandler(broker, bgpManager, this);
 115         notificationService.registerNotificationListener(vpnSubnetRouteHandler);
 116         registerListener(db);
 117     }
 118
 119     public void setMdsalManager(IMdsalApiManager mdsalManager) {
 120         this.mdsalManager = mdsalManager;
 121     }
 122
 123     public void setInterfaceManager(OdlInterfaceRpcService interfaceManager) {
 124         this.interfaceManager = interfaceManager;
 125         interfaceListener.setInterfaceManager(interfaceManager);
 126     }
 127
 128     public void setITMProvider(ItmRpcService itmProvider) {
 129         this.itmProvider = itmProvider;
 130     }
 131
 132     public void setFibManager(IFibManager fibManager) {
 133         this.fibManager = fibManager;
 134     }
 135
 136     public void setIdManager(IdManagerService idManager) {
 137         this.idManager = idManager;
 138         vpnSubnetRouteHandler.setIdManager(idManager);
 139     }
 140
 141     public void setArpManager(OdlArputilService arpManager) {
 142         this.arpManager = arpManager;
 143     }
 144
 145     public void setNeutronvpnManager(NeutronvpnService neuService) { this.neuService = neuService; }
 146
 147     public VpnSubnetRouteHandler getVpnSubnetRouteHandler() {
 148         return this.vpnSubnetRouteHandler;
 149     }
 150
 151     @Override
 152     public void close() throws Exception {
 153         if (listenerRegistration != null) {
 154             try {
 155                 listenerRegistration.close();
 156                 opListenerRegistration.close();
 157             } catch (final Exception e) {
 158                 LOG.error("Error when cleaning up DataChangeListener.", e);
 159             }
 160             listenerRegistration = null;
 161             opListenerRegistration = null;
 162         }
 163         LOG.info("VPN Interface Manager Closed");
 164     }
 165
 166     private void registerListener(final DataBroker db) {
 167         try {
 168             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
 169                     getWildCardPath(), VpnInterfaceManager.this, DataChangeScope.SUBTREE);
 170             opListenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
 171                                                                    getWildCardPath(), vpnInterfaceOpListener, DataChangeScope.SUBTREE);
 172         } catch (final Exception e) {
 173             LOG.error("VPN Service DataChange listener registration fail!", e);
 174             throw new IllegalStateException("VPN Service registration Listener failed.", e);
 175         }
 176     }
 177
 178     private InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> getInterfaceListenerPath() {
 179         return InstanceIdentifier.create(InterfacesState.class)
 180             .child(org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.class);
 181     }
 182
 183     @Override
 184     protected void add(final InstanceIdentifier<VpnInterface> identifier,
 185             final VpnInterface vpnInterface) {
 186         LOG.trace("VPN Interface key: {} , value: {}", identifier, vpnInterface );
 187         addInterface(identifier, vpnInterface);
 188     }
 189
 190     private void addInterface(final InstanceIdentifier<VpnInterface> identifier,
 191                               final VpnInterface vpnInterface) {
 192         LOG.trace("VPN Interface add event - key: {}, value: {}" ,identifier, vpnInterface );
 193         final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 194         String interfaceName = key.getName();
 195
 196         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface interfaceState =
 197             InterfaceUtils.getInterfaceStateFromOperDS(broker, interfaceName);
 198         if (interfaceState != null) {
 199             // Interface state is up
 200             processVpnInterfaceUp(InterfaceUtils.getDpIdFromInterface(interfaceState), interfaceName, interfaceState.getIfIndex());
 201         } else {
 202             LOG.trace("VPN interfaces are not yet operational.");
 203         }
 204     }
 205
 206     protected void processVpnInterfaceUp(BigInteger dpId, String interfaceName, int lPortTag) {
 207
 208         VpnInterface vpnInterface = VpnUtil.getConfiguredVpnInterface(broker, interfaceName);
 209         if(vpnInterface == null) {
 210             LOG.info("Unable to process add/up for interface {} as it is not configured", interfaceName);
 211             return;
 212         }
 213         String vpnName = vpnInterface.getVpnInstanceName();
 214         LOG.info("Binding vpn service to interface {} ", interfaceName);
 215         long vpnId = VpnUtil.getVpnId(broker, vpnName);
 216         if (vpnId == VpnConstants.INVALID_ID) {
 217             LOG.trace("VpnInstance to VPNId mapping is not yet available, bailing out now.");
 218             return;
 219         }
 220         synchronized (interfaceName.intern()) {
 221             if (VpnUtil.getOperationalVpnInterface(broker, vpnInterface.getName()) != null) {
 222                 LOG.trace("VPN Interface already provisioned , bailing out from here.");
 223                 return;
 224             }
 225             bindService(dpId, vpnName, interfaceName, lPortTag);
 226             updateDpnDbs(dpId, vpnName, interfaceName, true);
 227             processVpnInterfaceAdjacencies(dpId, VpnUtil.getVpnInterfaceIdentifier(vpnInterface.getName()), vpnInterface);
 228         }
 229
 230     }
 231
 232     private void updateDpnDbs(BigInteger dpId, String vpnName, String interfaceName, boolean add) {
 233         long vpnId = VpnUtil.getVpnId(broker, vpnName);
 234         if (dpId == null) {
 235             dpId = InterfaceUtils.getDpnForInterface(interfaceManager, interfaceName);
 236         }
 237         if(!dpId.equals(BigInteger.ZERO)) {
 238             if(add)
 239                 updateMappingDbs(vpnId, dpId, interfaceName, vpnName);
 240             else
 241                 removeFromMappingDbs(vpnId, dpId, interfaceName, vpnName);
 242         }
 243
 244     }
 245
 246     private void bindService(BigInteger dpId, String vpnInstanceName, String vpnInterfaceName, int lPortTag) {
 247         int priority = VpnConstants.DEFAULT_FLOW_PRIORITY;
 248         long vpnId = VpnUtil.getVpnId(broker, vpnInstanceName);
 249
 250         int instructionKey = 0;
 251         List<Instruction> instructions = new ArrayList<Instruction>();
 252
 253         instructions.add(MDSALUtil.buildAndGetWriteMetadaInstruction(BigInteger.valueOf(vpnId), MetaDataUtil.METADATA_MASK_VRFID, ++instructionKey));
 254         instructions.add(MDSALUtil.buildAndGetGotoTableInstruction(NwConstants.L3_FIB_TABLE, ++instructionKey));
 255
 256         BoundServices
 257             serviceInfo =
 258             InterfaceUtils.getBoundServices(String.format("%s.%s.%s", "vpn",vpnInstanceName, vpnInterfaceName),
 259                                             VpnConstants.L3VPN_SERVICE_IDENTIFIER, priority,
 260                                             VpnConstants.COOKIE_VM_INGRESS_TABLE, instructions);
 261         VpnUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 262                           InterfaceUtils.buildServiceId(vpnInterfaceName, VpnConstants.L3VPN_SERVICE_IDENTIFIER), serviceInfo);
 263         makeArpFlow(dpId, VpnConstants.L3VPN_SERVICE_IDENTIFIER, lPortTag, vpnInterfaceName,
 264                     vpnId, ArpReplyOrRequest.REQUEST, NwConstants.ADD_FLOW);
 265         makeArpFlow(dpId, VpnConstants.L3VPN_SERVICE_IDENTIFIER, lPortTag, vpnInterfaceName,
 266                 vpnId, ArpReplyOrRequest.REPLY, NwConstants.ADD_FLOW);
 267
 268     }
 269
 270     private void processVpnInterfaceAdjacencies(BigInteger dpnId, final InstanceIdentifier<VpnInterface> identifier, VpnInterface intf) {
 271         String intfName = intf.getName();
 272
 273         synchronized (intfName) {
 274             // Read NextHops
 275             InstanceIdentifier<Adjacencies> path = identifier.augmentation(Adjacencies.class);
 276             Optional<Adjacencies> adjacencies = VpnUtil.read(broker, LogicalDatastoreType.CONFIGURATION, path);
 277
 278             if (adjacencies.isPresent()) {
 279                 List<Adjacency> nextHops = adjacencies.get().getAdjacency();
 280                 List<Adjacency> value = new ArrayList<>();
 281
 282                 // Get the rd of the vpn instance
 283                 String rd = getRouteDistinguisher(intf.getVpnInstanceName());
 284
 285                 String nextHopIp = InterfaceUtils.getEndpointIpAddressForDPN(broker, dpnId);
 286                 if (nextHopIp == null){
 287                     LOG.error("NextHop for interface {} is null", intfName);
 288                 }
 289
 290                 LOG.trace("NextHops are {}", nextHops);
 291                 for (Adjacency nextHop : nextHops) {
 292                     String prefix = VpnUtil.getIpPrefix(nextHop.getIpAddress());
 293                     long label = VpnUtil.getUniqueId(idManager, VpnConstants.VPN_IDPOOL_NAME, VpnUtil
 294                             .getNextHopLabelKey((rd == null) ? intf.getVpnInstanceName() : rd, prefix));
 295                     String adjNextHop = nextHop.getNextHopIp();
 296                     value.add(new AdjacencyBuilder(nextHop).setLabel(label).setNextHopIp((adjNextHop != null && !adjNextHop.isEmpty()) ? adjNextHop : nextHopIp)
 297                             .setIpAddress(prefix).setKey(new AdjacencyKey(prefix)).build());
 298                     if(nextHop.getMacAddress() != null && !nextHop.getMacAddress().isEmpty()) {
 299                         VpnUtil.syncUpdate(
 300                                 broker,
 301                                 LogicalDatastoreType.OPERATIONAL,
 302                                 VpnUtil.getPrefixToInterfaceIdentifier(
 303                                         VpnUtil.getVpnId(broker, intf.getVpnInstanceName()), prefix),
 304                                 VpnUtil.getPrefixToInterface(dpnId, intf.getName(), prefix));
 305                     } else {
 306                         //Extra route adjacency
 307                         VpnUtil.syncUpdate(
 308                                 broker,
 309                                 LogicalDatastoreType.OPERATIONAL,
 310                                 VpnUtil.getVpnToExtrarouteIdentifier(
 311                                         (rd != null) ? rd : intf.getVpnInstanceName(), nextHop.getIpAddress()),
 312                                 VpnUtil.getVpnToExtraroute(nextHop.getIpAddress(), nextHop.getNextHopIp()));
 313
 314                     }
 315                 }
 316
 317                 Adjacencies aug = VpnUtil.getVpnInterfaceAugmentation(value);
 318                 VpnInterface opInterface = VpnUtil.getVpnInterface(intfName, intf.getVpnInstanceName(), aug);
 319                 InstanceIdentifier<VpnInterface> interfaceId = VpnUtil.getVpnInterfaceIdentifier(intfName);
 320                 VpnUtil.syncWrite(broker, LogicalDatastoreType.OPERATIONAL, interfaceId, opInterface);
 321                 for (Adjacency nextHop : aug.getAdjacency()) {
 322                     long label = nextHop.getLabel();
 323                     //String adjNextHop = nextHop.getNextHopIp();
 324                     if (rd != null) {
 325                         addPrefixToBGP(rd, nextHop.getIpAddress(),
 326                                             nextHopIp, label);
 327                     } else {
 328                         // ### add FIB route directly
 329                         addFibEntryToDS(intf.getVpnInstanceName(), nextHop.getIpAddress(),
 330                                             nextHopIp, (int) label);
 331                     }
 332                 }
 333             }
 334         }
 335     }
 336
 337     private void makeArpFlow(BigInteger dpId,short sIndex, int lPortTag, String vpnInterfaceName,
 338                              long vpnId, ArpReplyOrRequest replyOrRequest, int addOrRemoveFlow){
 339         List<MatchInfo> matches = new ArrayList<MatchInfo>();
 340         BigInteger metadata = MetaDataUtil.getMetaDataForLPortDispatcher(lPortTag, ++sIndex, BigInteger.valueOf(vpnId));
 341         BigInteger metadataMask = MetaDataUtil.getMetaDataMaskForLPortDispatcher(MetaDataUtil.METADATA_MASK_SERVICE_INDEX,
 342                 MetaDataUtil.METADATA_MASK_LPORT_TAG, MetaDataUtil.METADATA_MASK_VRFID);
 343
 344         // Matching Arp reply flows
 345         matches.add(new MatchInfo(MatchFieldType.eth_type, new long[] { NwConstants.ETHTYPE_ARP }));
 346         matches.add(new MatchInfo(MatchFieldType.metadata, new BigInteger[] {
 347                 metadata, metadataMask }));
 348
 349         matches.add(new MatchInfo(MatchFieldType.arp_op, new long[] { replyOrRequest.getArpOperation() }));
 350
 351         // Instruction to punt to controller
 352         List<InstructionInfo> instructions = new ArrayList<InstructionInfo>();
 353         List<ActionInfo> actionsInfos = new ArrayList<ActionInfo>();
 354         actionsInfos.add(new ActionInfo(ActionType.punt_to_controller, new String[] {}));
 355         instructions.add(new InstructionInfo(InstructionType.write_actions, actionsInfos));
 356
 357         // Install the flow entry in L3_INTERFACE_TABLE
 358         String flowRef = VpnUtil.getFlowRef(dpId, NwConstants.L3_INTERFACE_TABLE,
 359                     NwConstants.ETHTYPE_ARP, lPortTag, replyOrRequest.getArpOperation());
 360         FlowEntity flowEntity;
 361         flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.L3_INTERFACE_TABLE, flowRef,
 362                 NwConstants.DEFAULT_ARP_FLOW_PRIORITY, replyOrRequest.getName(), 0, 0,
 363                 VpnUtil.getCookieArpFlow(lPortTag), matches, instructions);
 364
 365         if (addOrRemoveFlow == NwConstants.ADD_FLOW) {
 366             LOG.debug("Creating ARP Flow for interface {}",vpnInterfaceName);
 367             mdsalManager.installFlow(flowEntity);
 368         } else {
 369             LOG.debug("Deleting ARP Flow for interface {}",vpnInterfaceName);
 370             mdsalManager.removeFlow(flowEntity);
 371         }
 372     }
 373
 374     private String getRouteDistinguisher(String vpnName) {
 375         InstanceIdentifier<VpnInstance> id = InstanceIdentifier.builder(VpnInstances.class)
 376                                       .child(VpnInstance.class, new VpnInstanceKey(vpnName)).build();
 377         Optional<VpnInstance> vpnInstance = VpnUtil.read(broker, LogicalDatastoreType.CONFIGURATION, id);
 378         String rd = "";
 379         if(vpnInstance.isPresent()) {
 380             VpnInstance instance = vpnInstance.get();
 381             VpnAfConfig config = instance.getIpv4Family();
 382             rd = config.getRouteDistinguisher();
 383         }
 384         return rd;
 385     }
 386
 387     private synchronized void updateMappingDbs(long vpnId, BigInteger dpnId, String intfName, String vpnName) {
 388         String routeDistinguisher = getRouteDistinguisher(vpnName);
 389         String rd = (routeDistinguisher == null) ? vpnName : routeDistinguisher;
 390         InstanceIdentifier<VpnToDpnList> id = VpnUtil.getVpnToDpnListIdentifier(rd, dpnId);
 391         Optional<VpnToDpnList> dpnInVpn = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, id);
 392         org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces
 393             vpnInterface = new VpnInterfacesBuilder().setInterfaceName(intfName).build();
 394
 395         if (dpnInVpn.isPresent()) {
 396             VpnUtil.syncWrite(broker, LogicalDatastoreType.OPERATIONAL, id.child(
 397                 org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance
 398                     .op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces.class,
 399                     new VpnInterfacesKey(intfName)), vpnInterface);
 400         } else {
 401             VpnUtil.syncUpdate(broker, LogicalDatastoreType.OPERATIONAL,
 402                                     VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 403                                     VpnUtil.getVpnInstanceOpDataBuilder(rd, vpnId));
 404             VpnToDpnListBuilder vpnToDpnList = new VpnToDpnListBuilder().setDpnId(dpnId);
 405             List<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data
 406                 .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces> vpnInterfaces =  new ArrayList<>();
 407             vpnInterfaces.add(vpnInterface);
 408             VpnUtil.syncWrite(broker, LogicalDatastoreType.OPERATIONAL, id,
 409                               vpnToDpnList.setVpnInterfaces(vpnInterfaces).build());
 410
 411             /**
 412              * FIXME: DC Gateway tunnel should be built dynamically
 413             //this is the first VM in this VPN on the DPN, may be a new DPN has come up,
 414             //if tunnel to DC GW does not exist, create it
 415             //if(!tunnelExists(dpnID, bgpManager.getDCGWIP()))
 416             String dcGW = bgpManager.getDCGwIP();
 417             if(dcGW != null && !dcGW.isEmpty())
 418             {
 419                 LOG.debug("Building tunnel from DPN {} to DC GW {}", dpnId, dcGW);
 420                 itmProvider.buildTunnelFromDPNToDCGW(dpnId, new IpAddress(dcGW.toCharArray()));
 421             }*/
 422             fibManager.populateFibOnNewDpn(dpnId, vpnId, (rd == null) ? vpnName : rd);
 423         }
 424     }
 425
 426     private synchronized void removeFromMappingDbs(long vpnId, BigInteger dpnId, String intfName, String vpnName) {
 427         //TODO: Delay 'DPN' removal so that other services can cleanup the entries for this dpn
 428         String rd = VpnUtil.getVpnRd(broker, vpnName);
 429         InstanceIdentifier<VpnToDpnList> id = VpnUtil.getVpnToDpnListIdentifier(rd, dpnId);
 430         Optional<VpnToDpnList> dpnInVpn = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, id);
 431         if (dpnInVpn.isPresent()) {
 432             List<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data
 433                 .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces> vpnInterfaces = dpnInVpn.get().getVpnInterfaces();
 434             org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces
 435                     currVpnInterface = new VpnInterfacesBuilder().setInterfaceName(intfName).build();
 436
 437             if (vpnInterfaces.remove(currVpnInterface)) {
 438                 if (vpnInterfaces.isEmpty()) {
 439                     VpnUtil.delete(broker, LogicalDatastoreType.OPERATIONAL, id, VpnUtil.DEFAULT_CALLBACK);
 440                     fibManager.cleanUpDpnForVpn(dpnId, vpnId, rd);
 441                 } else {
 442                     VpnUtil.delete(broker, LogicalDatastoreType.OPERATIONAL, id.child(
 443                         org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data
 444                             .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces.class,
 445                             new VpnInterfacesKey(intfName)), VpnUtil.DEFAULT_CALLBACK);
 446                 }
 447             }
 448         }
 449     }
 450
 451     private void addPrefixToBGP(String rd, String prefix, String nextHopIp, long label) {
 452         try {
 453             bgpManager.addPrefix(rd, prefix, nextHopIp, (int)label);
 454         } catch(Exception e) {
 455             LOG.error("Add prefix failed", e);
 456         }
 457     }
 458
 459
 460     private InstanceIdentifier<VpnInterface> getWildCardPath() {
 461         return InstanceIdentifier.create(VpnInterfaces.class).child(VpnInterface.class);
 462     }
 463
 464     @Override
 465     protected void remove( InstanceIdentifier<VpnInterface> identifier, VpnInterface vpnInterface) {
 466         LOG.trace("Remove event - key: {}, value: {}" ,identifier, vpnInterface );
 467         final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 468         String interfaceName = key.getName();
 469
 470         InstanceIdentifier<VpnInterface> interfaceId = VpnUtil.getVpnInterfaceIdentifier(interfaceName);
 471         Optional<VpnInterface> existingVpnInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, interfaceId);
 472         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface interfaceState =
 473             InterfaceUtils.getInterfaceStateFromOperDS(broker, interfaceName);
 474
 475         if (existingVpnInterface.isPresent() && interfaceState != null) {
 476             processVpnInterfaceDown(InterfaceUtils.getDpIdFromInterface(interfaceState), interfaceName, interfaceState.getIfIndex(), false);
 477         } else {
 478             LOG.warn("VPN interface {} was unavailable in operational data store to handle remove event", interfaceName);
 479         }
 480     }
 481
 482     protected void processVpnInterfaceDown(BigInteger dpId, String interfaceName, int lPortTag, boolean isInterfaceStateDown) {
 483         VpnInterface vpnInterface = VpnUtil.getOperationalVpnInterface(broker, interfaceName);
 484         if(vpnInterface == null) {
 485             LOG.info("Unable to process delete/down for interface {} as it is not available in operational data store", interfaceName);
 486             return;
 487         }
 488         String vpnName = vpnInterface.getVpnInstanceName();
 489         InstanceIdentifier<VpnInterface> identifier = VpnUtil.getVpnInterfaceIdentifier(interfaceName);
 490
 491         synchronized (interfaceName.intern()) {
 492             removeAdjacenciesFromVpn(identifier, vpnInterface);
 493             LOG.info("Unbinding vpn service from interface {} ", interfaceName);
 494             unbindService(dpId, vpnName, interfaceName, lPortTag, isInterfaceStateDown);
 495
 496             //wait till DCN for removal of vpn interface in operational DS arrives
 497             Runnable notifyTask = new VpnNotifyTask();
 498             synchronized (interfaceName.intern()) {
 499                 vpnIntfMap.put(interfaceName, notifyTask);
 500                 synchronized (notifyTask) {
 501                     try {
 502                         notifyTask.wait(VpnConstants.WAIT_TIME_IN_MILLISECONDS);
 503                     } catch (InterruptedException e) {
 504                     }
 505                 }
 506             }
 507
 508         }
 509     }
 510
 511     private void removeAdjacenciesFromVpn(final InstanceIdentifier<VpnInterface> identifier, VpnInterface intf) {
 512         //Read NextHops
 513         InstanceIdentifier<Adjacencies> path = identifier.augmentation(Adjacencies.class);
 514         Optional<Adjacencies> adjacencies = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, path);
 515
 516         String rd = VpnUtil.getVpnRd(broker, intf.getVpnInstanceName());
 517         if (adjacencies.isPresent()) {
 518             List<Adjacency> nextHops = adjacencies.get().getAdjacency();
 519
 520             if (!nextHops.isEmpty()) {
 521                 LOG.trace("NextHops are " + nextHops);
 522                 for (Adjacency nextHop : nextHops) {
 523                     VpnUtil.releaseId(idManager, VpnConstants.VPN_IDPOOL_NAME,
 524                                       VpnUtil.getNextHopLabelKey(rd, nextHop.getIpAddress()));
 525                     /*VpnUtil.delete(broker, LogicalDatastoreType.OPERATIONAL,
 526                                    VpnUtil.getPrefixToInterfaceIdentifier(
 527                                        VpnUtil.getVpnId(broker, intf.getVpnInstanceName()),
 528                                        nextHop.getIpAddress()),
 529                                    VpnUtil.DEFAULT_CALLBACK);*/
 530                     if (rd.equals(intf.getVpnInstanceName())) {
 531                         //this is an internal vpn - the rd is assigned to the vpn instance name;
 532                         //remove from FIB directly
 533                         removeFibEntryFromDS(intf.getVpnInstanceName(), nextHop.getIpAddress());
 534                     } else {
 535                         removePrefixFromBGP(rd, nextHop.getIpAddress());
 536                     }
 537                 }
 538             }
 539         }
 540     }
 541
 542
 543     private void unbindService(BigInteger dpId, String vpnInstanceName, String vpnInterfaceName,
 544                                int lPortTag, boolean isInterfaceStateDown) {
 545         if (!isInterfaceStateDown) {
 546             VpnUtil.delete(broker, LogicalDatastoreType.CONFIGURATION,
 547                            InterfaceUtils.buildServiceId(vpnInterfaceName,
 548                                                          VpnConstants.L3VPN_SERVICE_IDENTIFIER),
 549                            VpnUtil.DEFAULT_CALLBACK);
 550         }
 551         long vpnId = VpnUtil.getVpnId(broker, vpnInstanceName);
 552         makeArpFlow(dpId, VpnConstants.L3VPN_SERVICE_IDENTIFIER, lPortTag, vpnInterfaceName,
 553                     vpnId, ArpReplyOrRequest.REQUEST, NwConstants.DEL_FLOW);
 554         makeArpFlow(dpId, VpnConstants.L3VPN_SERVICE_IDENTIFIER, lPortTag, vpnInterfaceName,
 555                 vpnId, ArpReplyOrRequest.REPLY, NwConstants.DEL_FLOW);
 556     }
 557
 558
 559     private void removePrefixFromBGP(String rd, String prefix) {
 560         try {
 561             bgpManager.deletePrefix(rd, prefix);
 562         } catch(Exception e) {
 563             LOG.error("Delete prefix failed", e);
 564         }
 565     }
 566
 567     @Override
 568     protected void update(InstanceIdentifier<VpnInterface> identifier, VpnInterface original, VpnInterface update) {
 569         if (LOG.isTraceEnabled()) {
 570             LOG.trace("Updating VPN Interface : key " + identifier + ",  original value=" + original + ", update " +
 571                     "value=" + update);
 572         }
 573         String oldVpnName = original.getVpnInstanceName();
 574         String newVpnName = update.getVpnInstanceName();
 575         List<Adjacency> oldAdjs = original.getAugmentation(Adjacencies.class).getAdjacency();
 576         List<Adjacency> newAdjs = update.getAugmentation(Adjacencies.class).getAdjacency();
 577         if (oldAdjs == null) {
 578             oldAdjs = new ArrayList<>();
 579         }
 580         if (newAdjs == null) {
 581             newAdjs = new ArrayList<>();
 582         }
 583         //handles switching between <internal VPN - external VPN>
 584         if (!oldVpnName.equals(newVpnName)) {
 585             remove(identifier, original);
 586             add(identifier, update);
 587         }
 588         //handle both addition and removal of adjacencies
 589         //currently, new adjacency may be an extra route
 590         if (!oldAdjs.equals(newAdjs)) {
 591             for (Adjacency adj : newAdjs) {
 592                 if (oldAdjs.contains(adj)) {
 593                     oldAdjs.remove(adj);
 594                 } else {
 595                     // add new adjacency - right now only extra route will hit this path
 596                     addNewAdjToVpnInterface(identifier, adj);
 597                 }
 598             }
 599             for (Adjacency adj : oldAdjs) {
 600                 delAdjFromVpnInterface(identifier, adj);
 601             }
 602         }
 603     }
 604
 605     public void processArpRequest(IpAddress srcIP, PhysAddress srcMac, IpAddress targetIP, String srcInterface){
 606         SendArpResponseInput input = new SendArpResponseInputBuilder().setInterface(srcInterface)
 607                                                                     .setIpaddress(srcIP).setSrcIpAddress(targetIP).setMacaddress(srcMac).build();
 608         final String msgFormat = String.format("Send ARP Response on interface %s to destination %s", srcInterface, srcIP);
 609         Future<RpcResult<Void>> future = arpManager.sendArpResponse(input);
 610         Futures.addCallback(JdkFutureAdapters.listenInPoolThread(future), new FutureCallback<RpcResult<Void>>() {
 611             @Override
 612             public void onFailure(Throwable error) {
 613                 LOG.error("Error - {}", msgFormat, error);
 614             }
 615
 616             @Override
 617             public void onSuccess(RpcResult<Void> result) {
 618                 if(!result.isSuccessful()) {
 619                     LOG.warn("Rpc call to {} failed", msgFormat, getErrorText(result.getErrors()));
 620                 } else {
 621                     LOG.debug("Successful RPC Result - {}", msgFormat);
 622                 }
 623             }
 624         });
 625     }
 626
 627     private String getErrorText(Collection<RpcError> errors) {
 628         StringBuilder errorText = new StringBuilder();
 629         for(RpcError error : errors) {
 630             errorText.append(",").append(error.getErrorType()).append("-")
 631                      .append(error.getMessage());
 632         }
 633         return errorText.toString();
 634     }
 635
 636     private String getTunnelInterfaceFlowRef(BigInteger dpnId, short tableId, String ifName) {
 637         return new StringBuilder().append(dpnId).append(tableId).append(ifName).toString();
 638     }
 639
 640
 641
 642     public synchronized void addFibEntryToDS(String rd, String prefix,
 643             String nexthop, int label) {
 644
 645         VrfEntry vrfEntry = new VrfEntryBuilder().setDestPrefix(prefix).
 646                     setNextHopAddress(nexthop).setLabel((long)label).build();
 647         LOG.debug("Created vrfEntry for {} nexthop {} label {}", prefix, nexthop, label);
 648
 649         List<VrfEntry> vrfEntryList = new ArrayList<VrfEntry>();
 650         vrfEntryList.add(vrfEntry);
 651
 652         InstanceIdentifierBuilder<VrfTables> idBuilder =
 653                     InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd));
 654         InstanceIdentifier<VrfTables> vrfTableId = idBuilder.build();
 655
 656         VrfTables vrfTableNew = new VrfTablesBuilder().setRouteDistinguisher(rd).
 657                     setVrfEntry(vrfEntryList).build();
 658
 659         VpnUtil.syncUpdate(broker, LogicalDatastoreType.CONFIGURATION, vrfTableId, vrfTableNew);
 660     }
 661
 662     public synchronized void removeFibEntryFromDS(String rd, String prefix) {
 663
 664         LOG.debug("Removing fib entry with destination prefix {} from vrf table for rd {}", prefix, rd);
 665
 666         InstanceIdentifierBuilder<VrfEntry> idBuilder =
 667             InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd)).child(VrfEntry.class, new VrfEntryKey(prefix));
 668         InstanceIdentifier<VrfEntry> vrfEntryId = idBuilder.build();
 669         VpnUtil.delete(broker, LogicalDatastoreType.CONFIGURATION, vrfEntryId, VpnUtil.DEFAULT_CALLBACK);
 670
 671     }
 672
 673     public synchronized void removeVrfFromDS(String rd) {
 674         LOG.debug("Removing vrf table for  rd {}", rd);
 675
 676         InstanceIdentifierBuilder<VrfTables> idBuilder =
 677                 InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd));
 678         InstanceIdentifier<VrfTables> vrfTableId = idBuilder.build();
 679
 680         VpnUtil.delete(broker, LogicalDatastoreType.CONFIGURATION, vrfTableId, VpnUtil.DEFAULT_CALLBACK);
 681
 682     }
 683
 684     protected void addNewAdjToVpnInterface(InstanceIdentifier<VpnInterface> identifier, Adjacency adj) {
 685
 686         Optional<VpnInterface> optVpnInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, identifier);
 687
 688         if (optVpnInterface.isPresent()) {
 689             VpnInterface currVpnIntf = optVpnInterface.get();
 690             String prefix = VpnUtil.getIpPrefix(adj.getIpAddress());
 691             String rd = getRouteDistinguisher(currVpnIntf.getVpnInstanceName());
 692             InstanceIdentifier<Adjacencies> adjPath = identifier.augmentation(Adjacencies.class);
 693             Optional<Adjacencies> optAdjacencies = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, adjPath);
 694             long label =
 695                     VpnUtil.getUniqueId(idManager, VpnConstants.VPN_IDPOOL_NAME,
 696                             VpnUtil.getNextHopLabelKey((rd != null) ? rd : currVpnIntf.getVpnInstanceName(), prefix));
 697
 698             List<Adjacency> adjacencies;
 699             if (optAdjacencies.isPresent()) {
 700                 adjacencies = optAdjacencies.get().getAdjacency();
 701             } else {
 702                 //This code will not be hit since VM adjacency will always be there
 703                 adjacencies = new ArrayList<>();
 704             }
 705
 706             adjacencies.add(new AdjacencyBuilder(adj).setLabel(label).setNextHopIp(adj.getNextHopIp())
 707                     .setIpAddress(prefix).setKey(new AdjacencyKey(prefix)).build());
 708
 709             Adjacencies aug = VpnUtil.getVpnInterfaceAugmentation(adjacencies);
 710             VpnInterface newVpnIntf = VpnUtil.getVpnInterface(currVpnIntf.getName(), currVpnIntf.getVpnInstanceName(), aug);
 711
 712             VpnUtil.syncUpdate(broker, LogicalDatastoreType.OPERATIONAL, identifier, newVpnIntf);
 713             addExtraRoute(adj.getIpAddress(), adj.getNextHopIp(), rd, currVpnIntf.getVpnInstanceName(), (int) label, currVpnIntf.getName());
 714
 715         }
 716
 717     }
 718
 719     protected void delAdjFromVpnInterface(InstanceIdentifier<VpnInterface> identifier, Adjacency adj) {
 720         Optional<VpnInterface> optVpnInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, identifier);
 721
 722         if (optVpnInterface.isPresent()) {
 723             VpnInterface currVpnIntf = optVpnInterface.get();
 724
 725             InstanceIdentifier<Adjacencies> path = identifier.augmentation(Adjacencies.class);
 726             Optional<Adjacencies> optAdjacencies = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, path);
 727             if (optAdjacencies.isPresent()) {
 728                 List<Adjacency> adjacencies = optAdjacencies.get().getAdjacency();
 729
 730                 if (!adjacencies.isEmpty()) {
 731                     String rd = getRouteDistinguisher(currVpnIntf.getVpnInstanceName());
 732                     LOG.trace("Adjacencies are " + adjacencies);
 733                     Iterator<Adjacency> adjIt = adjacencies.iterator();
 734                     while (adjIt.hasNext()) {
 735                         Adjacency adjElem = adjIt.next();
 736                         if (adjElem.getIpAddress().equals(adj.getIpAddress())) {
 737                             VpnUtil.releaseId(idManager, VpnConstants.VPN_IDPOOL_NAME,
 738                                     VpnUtil.getNextHopLabelKey(rd, adj.getIpAddress()));
 739                             adjIt.remove();
 740
 741                             Adjacencies aug = VpnUtil.getVpnInterfaceAugmentation(adjacencies);
 742                             VpnInterface newVpnIntf = VpnUtil.getVpnInterface(currVpnIntf.getName(),
 743                                                                               currVpnIntf.getVpnInstanceName(),
 744                                                                               aug);
 745
 746                             VpnUtil.syncUpdate(broker, LogicalDatastoreType.OPERATIONAL, identifier, newVpnIntf);
 747
 748                             delExtraRoute(adj.getIpAddress(), rd, currVpnIntf.getVpnInstanceName());
 749                             break;
 750                         }
 751
 752                     }
 753                 }
 754             }
 755         }
 756
 757     }
 758
 759     protected void addExtraRoute(String destination, String nextHop, String rd, String routerID, int label, String intfName) {
 760
 761         //add extra route to vpn mapping; advertise with nexthop as tunnel ip
 762         VpnUtil.syncUpdate(
 763             broker,
 764             LogicalDatastoreType.OPERATIONAL,
 765             VpnUtil.getVpnToExtrarouteIdentifier(
 766                 (rd != null) ? rd : routerID, destination),
 767             VpnUtil.getVpnToExtraroute(destination, nextHop));
 768
 769         if (intfName != null && !intfName.isEmpty()) {
 770             BigInteger dpnId = InterfaceUtils.getDpnForInterface(interfaceManager, intfName);
 771             String nextHopIp = InterfaceUtils.getEndpointIpAddressForDPN(broker, dpnId);
 772             if (nextHopIp == null || nextHopIp.isEmpty()) {
 773                 LOG.warn("NextHop for interface {} is null / empty. Failed advertising extra route for prefix {}", intfName, destination);
 774             }
 775             nextHop = nextHopIp;
 776         }
 777         if (rd != null) {
 778             addPrefixToBGP(rd, destination, nextHop, label);
 779         } else {
 780             // ### add FIB route directly
 781             addFibEntryToDS(routerID, destination, nextHop, label);
 782         }
 783     }
 784
 785     protected void delExtraRoute(String destination, String rd, String routerID) {
 786         if (rd != null) {
 787             removePrefixFromBGP(rd, destination);
 788         } else {
 789             // ### add FIB route directly
 790             removeFibEntryFromDS(routerID, destination);
 791         }
 792     }
 793
 794     class VpnInterfaceOpListener extends org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener<VpnInterface> {
 795
 796         public VpnInterfaceOpListener() {
 797             super(VpnInterface.class);
 798         }
 799
 800         @Override
 801         protected void remove(InstanceIdentifier<VpnInterface> identifier, VpnInterface del) {
 802             final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 803             String interfaceName = key.getName();
 804
 805             //increment the vpn interface count in Vpn Instance Op Data
 806             Long ifCnt = 0L;
 807             String rd = getRouteDistinguisher(del.getVpnInstanceName());
 808             if(rd == null || rd.isEmpty()) rd = del.getVpnInstanceName();
 809             VpnInstanceOpDataEntry vpnInstOp = VpnUtil.getVpnInstanceOpData(broker, rd);
 810             if(vpnInstOp != null && vpnInstOp.getVpnInterfaceCount() != null) {
 811                 ifCnt = vpnInstOp.getVpnInterfaceCount();
 812             }
 813
 814             LOG.trace("VpnInterfaceOpListener remove: interface name {} rd {} interface count in Vpn Op Instance {}", interfaceName, rd, ifCnt);
 815
 816             if(ifCnt != 0) {
 817                 VpnUtil.asyncUpdate(broker, LogicalDatastoreType.OPERATIONAL,
 818                         VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 819                         VpnUtil.updateIntfCntInVpnInstOpData(ifCnt - 1, rd), VpnUtil.DEFAULT_CALLBACK);
 820             }
 821
 822             // Vpn Interface removed => No more adjacencies from it.
 823             // Hence clean up interface from vpn-dpn-interface list.
 824             Adjacency adjacency = del.getAugmentation(Adjacencies.class).getAdjacency().get(0);
 825             Optional<Prefixes> prefixToInterface = Optional.absent();
 826             prefixToInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL,
 827                          VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 828                                                 VpnUtil.getIpPrefix(adjacency.getIpAddress())));
 829             if (!prefixToInterface.isPresent()) {
 830                 prefixToInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL,
 831                                                  VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 832                                                          VpnUtil.getIpPrefix(adjacency.getNextHopIp())));
 833             }
 834             if (prefixToInterface.isPresent()) {
 835                 VpnUtil.delete(broker, LogicalDatastoreType.OPERATIONAL,
 836                                VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 837                                                  prefixToInterface.get().getIpAddress()),
 838                                VpnUtil.DEFAULT_CALLBACK);
 839                 updateDpnDbs(prefixToInterface.get().getDpnId(), del.getVpnInstanceName(), interfaceName, false);
 840             }
 841             notifyTaskIfRequired(interfaceName);
 842         }
 843
 844         private void notifyTaskIfRequired(String intfName) {
 845             Runnable notifyTask = vpnIntfMap.remove(intfName);
 846             if (notifyTask == null) {
 847                 return;
 848             }
 849             executorService.execute(notifyTask);
 850         }
 851
 852         @Override
 853         protected void update(InstanceIdentifier<VpnInterface> identifier, VpnInterface original, VpnInterface update) {
 854         }
 855
 856         @Override
 857         protected void add(InstanceIdentifier<VpnInterface> identifier, VpnInterface add) {
 858             final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 859             String interfaceName = key.getName();
 860
 861             //increment the vpn interface count in Vpn Instance Op Data
 862             Long ifCnt = 0L;
 863             String rd = getRouteDistinguisher(add.getVpnInstanceName());
 864             if(rd == null || rd.isEmpty()) rd = add.getVpnInstanceName();
 865             VpnInstanceOpDataEntry vpnInstOp = VpnUtil.getVpnInstanceOpData(broker, rd);
 866             if(vpnInstOp != null &&  vpnInstOp.getVpnInterfaceCount() != null) {
 867                 ifCnt = vpnInstOp.getVpnInterfaceCount();
 868             }
 869
 870             LOG.trace("VpnInterfaceOpListener add: interface name {} rd {} interface count in Vpn Op Instance {}", interfaceName, rd, ifCnt);
 871
 872             VpnUtil.asyncUpdate(broker, LogicalDatastoreType.OPERATIONAL,
 873                     VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 874                     VpnUtil.updateIntfCntInVpnInstOpData(ifCnt + 1, rd), VpnUtil.DEFAULT_CALLBACK);
 875
 876
 877         }
 878     }
 879
 880     protected void updatePrefixesForDPN(BigInteger dpnId, UpdateRouteAction action) {
 881
 882         LOG.info("Tunnel event triggered {} for Dpn:{} ", action.name(), dpnId);
 883         InstanceIdentifierBuilder<VpnInstances> idBuilder = InstanceIdentifier.builder(VpnInstances.class);
 884         InstanceIdentifier<VpnInstances> vpnInstancesId = idBuilder.build();
 885         Optional<VpnInstances> vpnInstances = VpnUtil.read(broker, LogicalDatastoreType.CONFIGURATION, vpnInstancesId);
 886
 887         if (vpnInstances.isPresent()) {
 888             List<VpnInstance> vpnInstanceList = vpnInstances.get().getVpnInstance();
 889             Iterator<VpnInstance> vpnInstIter = vpnInstanceList.iterator();
 890             while (vpnInstIter.hasNext()) {
 891                 VpnInstance vpnInstance = vpnInstIter.next();
 892                 try {
 893                     VpnAfConfig vpnConfig = vpnInstance.getIpv4Family();
 894                     String rd = vpnConfig.getRouteDistinguisher();
 895                     if (rd == null || rd.isEmpty()) {
 896                         rd = vpnInstance.getVpnInstanceName();
 897                     }
 898                     InstanceIdentifier<VpnToDpnList> id =
 899                         VpnUtil.getVpnToDpnListIdentifier(rd, dpnId);
 900                     Optional<VpnToDpnList> dpnInVpn =
 901                         VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, id);
 902                     if (dpnInVpn.isPresent()) {
 903                         // if (action == UpdateRouteAction.ADVERTISE_ROUTE) {
 904                         //    fibManager.populateFibOnNewDpn(dpnId, VpnUtil
 905                         //        .getVpnId(broker, vpnInstance.getVpnInstanceName()), rd);
 906                         // }
 907                         List<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data
 908                             .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces>
 909                             vpnInterfaces = dpnInVpn.get().getVpnInterfaces();
 910                         for (org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data
 911                             .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces vpnInterface : vpnInterfaces) {
 912                             InstanceIdentifier<VpnInterface> vpnIntfId =
 913                                 VpnUtil.getVpnInterfaceIdentifier(vpnInterface.getInterfaceName());
 914                             InstanceIdentifier<Adjacencies> path =
 915                                 vpnIntfId.augmentation(Adjacencies.class);
 916                             Optional<Adjacencies> adjacencies =
 917                                 VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, path);
 918
 919                             if (adjacencies.isPresent()) {
 920                                 List<Adjacency> adjacencyList = adjacencies.get().getAdjacency();
 921                                 Iterator<Adjacency> adjacencyIterator = adjacencyList.iterator();
 922
 923                                 while (adjacencyIterator.hasNext()) {
 924                                     Adjacency adjacency = adjacencyIterator.next();
 925                                     try {
 926                                         if (action == UpdateRouteAction.ADVERTISE_ROUTE)
 927                                             bgpManager.addPrefix(rd, adjacency.getIpAddress(),
 928                                                                  adjacency.getNextHopIp(),
 929                                                                  adjacency.getLabel().intValue());
 930                                         else if (action == UpdateRouteAction.WITHDRAW_ROUTE)
 931                                             bgpManager.deletePrefix(rd, adjacency.getIpAddress());
 932                                     } catch (Exception e) {
 933                                         LOG.error("Exception when updating prefix {} in vrf {} to BGP",
 934                                             adjacency.getIpAddress(), rd);
 935                                     }
 936                                 }
 937                             }
 938
 939                         }
 940                         // if (action == UpdateRouteAction.WITHDRAW_ROUTE) {
 941                         //    fibManager.cleanUpDpnForVpn(dpnId, VpnUtil.getVpnId(broker, vpnInstance.getVpnInstanceName()), rd);
 942                         // }
 943                     }
 944                 } catch (Exception e) {
 945                     LOG.error("updatePrefixesForDPN {} in vpn {} failed", dpnId, vpnInstance.getVpnInstanceName(), e);
 946                 }
 947             }
 948         }
 949     }
 950
 951 }