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.MIN_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         LOG.trace("removeAdjacenciesFromVpn: For interface {} RD recovered for vpn {} as rd {}", intf.getName(),
 518                 intf.getVpnInstanceName(), rd);
 519         if (adjacencies.isPresent()) {
 520             List<Adjacency> nextHops = adjacencies.get().getAdjacency();
 521
 522             if (!nextHops.isEmpty()) {
 523                 LOG.trace("NextHops are " + nextHops);
 524                 for (Adjacency nextHop : nextHops) {
 525                     VpnUtil.releaseId(idManager, VpnConstants.VPN_IDPOOL_NAME,
 526                                       VpnUtil.getNextHopLabelKey(rd, nextHop.getIpAddress()));
 527                     /*VpnUtil.delete(broker, LogicalDatastoreType.OPERATIONAL,
 528                                    VpnUtil.getPrefixToInterfaceIdentifier(
 529                                        VpnUtil.getVpnId(broker, intf.getVpnInstanceName()),
 530                                        nextHop.getIpAddress()),
 531                                    VpnUtil.DEFAULT_CALLBACK);*/
 532                     if (rd.equals(intf.getVpnInstanceName())) {
 533                         //this is an internal vpn - the rd is assigned to the vpn instance name;
 534                         //remove from FIB directly
 535                         removeFibEntryFromDS(intf.getVpnInstanceName(), nextHop.getIpAddress());
 536                     } else {
 537                         removePrefixFromBGP(rd, nextHop.getIpAddress());
 538                     }
 539                 }
 540             }
 541         }
 542     }
 543
 544
 545     private void unbindService(BigInteger dpId, String vpnInstanceName, String vpnInterfaceName,
 546                                int lPortTag, boolean isInterfaceStateDown) {
 547         if (!isInterfaceStateDown) {
 548             VpnUtil.delete(broker, LogicalDatastoreType.CONFIGURATION,
 549                            InterfaceUtils.buildServiceId(vpnInterfaceName,
 550                                                          VpnConstants.L3VPN_SERVICE_IDENTIFIER),
 551                            VpnUtil.DEFAULT_CALLBACK);
 552         }
 553         long vpnId = VpnUtil.getVpnId(broker, vpnInstanceName);
 554         makeArpFlow(dpId, VpnConstants.L3VPN_SERVICE_IDENTIFIER, lPortTag, vpnInterfaceName,
 555                     vpnId, ArpReplyOrRequest.REQUEST, NwConstants.DEL_FLOW);
 556         makeArpFlow(dpId, VpnConstants.L3VPN_SERVICE_IDENTIFIER, lPortTag, vpnInterfaceName,
 557                 vpnId, ArpReplyOrRequest.REPLY, NwConstants.DEL_FLOW);
 558     }
 559
 560
 561     private void removePrefixFromBGP(String rd, String prefix) {
 562         try {
 563             bgpManager.deletePrefix(rd, prefix);
 564         } catch(Exception e) {
 565             LOG.error("Delete prefix failed", e);
 566         }
 567     }
 568
 569     @Override
 570     protected void update(InstanceIdentifier<VpnInterface> identifier, VpnInterface original, VpnInterface update) {
 571         if (LOG.isTraceEnabled()) {
 572             LOG.trace("Updating VPN Interface : key " + identifier + ",  original value=" + original + ", update " +
 573                     "value=" + update);
 574         }
 575         String oldVpnName = original.getVpnInstanceName();
 576         String newVpnName = update.getVpnInstanceName();
 577         List<Adjacency> oldAdjs = original.getAugmentation(Adjacencies.class).getAdjacency();
 578         List<Adjacency> newAdjs = update.getAugmentation(Adjacencies.class).getAdjacency();
 579         if (oldAdjs == null) {
 580             oldAdjs = new ArrayList<>();
 581         }
 582         if (newAdjs == null) {
 583             newAdjs = new ArrayList<>();
 584         }
 585         //handles switching between <internal VPN - external VPN>
 586         if (!oldVpnName.equals(newVpnName)) {
 587             remove(identifier, original);
 588             add(identifier, update);
 589         }
 590         //handle both addition and removal of adjacencies
 591         //currently, new adjacency may be an extra route
 592         if (!oldAdjs.equals(newAdjs)) {
 593             for (Adjacency adj : newAdjs) {
 594                 if (oldAdjs.contains(adj)) {
 595                     oldAdjs.remove(adj);
 596                 } else {
 597                     // add new adjacency - right now only extra route will hit this path
 598                     addNewAdjToVpnInterface(identifier, adj);
 599                 }
 600             }
 601             for (Adjacency adj : oldAdjs) {
 602                 delAdjFromVpnInterface(identifier, adj);
 603             }
 604         }
 605     }
 606
 607     public void processArpRequest(IpAddress srcIP, PhysAddress srcMac, IpAddress targetIP, String srcInterface){
 608         SendArpResponseInput input = new SendArpResponseInputBuilder().setInterface(srcInterface)
 609                                                                     .setIpaddress(srcIP).setSrcIpAddress(targetIP).setMacaddress(srcMac).build();
 610         final String msgFormat = String.format("Send ARP Response on interface %s to destination %s", srcInterface, srcIP);
 611         Future<RpcResult<Void>> future = arpManager.sendArpResponse(input);
 612         Futures.addCallback(JdkFutureAdapters.listenInPoolThread(future), new FutureCallback<RpcResult<Void>>() {
 613             @Override
 614             public void onFailure(Throwable error) {
 615                 LOG.error("Error - {}", msgFormat, error);
 616             }
 617
 618             @Override
 619             public void onSuccess(RpcResult<Void> result) {
 620                 if(!result.isSuccessful()) {
 621                     LOG.warn("Rpc call to {} failed", msgFormat, getErrorText(result.getErrors()));
 622                 } else {
 623                     LOG.debug("Successful RPC Result - {}", msgFormat);
 624                 }
 625             }
 626         });
 627     }
 628
 629     private String getErrorText(Collection<RpcError> errors) {
 630         StringBuilder errorText = new StringBuilder();
 631         for(RpcError error : errors) {
 632             errorText.append(",").append(error.getErrorType()).append("-")
 633                      .append(error.getMessage());
 634         }
 635         return errorText.toString();
 636     }
 637
 638     private String getTunnelInterfaceFlowRef(BigInteger dpnId, short tableId, String ifName) {
 639         return new StringBuilder().append(dpnId).append(tableId).append(ifName).toString();
 640     }
 641
 642
 643
 644     public synchronized void addFibEntryToDS(String rd, String prefix,
 645             String nexthop, int label) {
 646
 647         VrfEntry vrfEntry = new VrfEntryBuilder().setDestPrefix(prefix).
 648                     setNextHopAddress(nexthop).setLabel((long)label).build();
 649         LOG.debug("Created vrfEntry for {} nexthop {} label {}", prefix, nexthop, label);
 650
 651         List<VrfEntry> vrfEntryList = new ArrayList<VrfEntry>();
 652         vrfEntryList.add(vrfEntry);
 653
 654         InstanceIdentifierBuilder<VrfTables> idBuilder =
 655                     InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd));
 656         InstanceIdentifier<VrfTables> vrfTableId = idBuilder.build();
 657
 658         VrfTables vrfTableNew = new VrfTablesBuilder().setRouteDistinguisher(rd).
 659                     setVrfEntry(vrfEntryList).build();
 660
 661         VpnUtil.syncUpdate(broker, LogicalDatastoreType.CONFIGURATION, vrfTableId, vrfTableNew);
 662     }
 663
 664     public synchronized void removeFibEntryFromDS(String rd, String prefix) {
 665
 666         LOG.debug("Removing fib entry with destination prefix {} from vrf table for rd {}", prefix, rd);
 667
 668         InstanceIdentifierBuilder<VrfEntry> idBuilder =
 669             InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd)).child(VrfEntry.class, new VrfEntryKey(prefix));
 670         InstanceIdentifier<VrfEntry> vrfEntryId = idBuilder.build();
 671         VpnUtil.delete(broker, LogicalDatastoreType.CONFIGURATION, vrfEntryId, VpnUtil.DEFAULT_CALLBACK);
 672
 673     }
 674
 675     public synchronized void removeVrfFromDS(String rd) {
 676         LOG.debug("Removing vrf table for  rd {}", rd);
 677
 678         InstanceIdentifierBuilder<VrfTables> idBuilder =
 679                 InstanceIdentifier.builder(FibEntries.class).child(VrfTables.class, new VrfTablesKey(rd));
 680         InstanceIdentifier<VrfTables> vrfTableId = idBuilder.build();
 681
 682         VpnUtil.delete(broker, LogicalDatastoreType.CONFIGURATION, vrfTableId, VpnUtil.DEFAULT_CALLBACK);
 683
 684     }
 685
 686     protected void addNewAdjToVpnInterface(InstanceIdentifier<VpnInterface> identifier, Adjacency adj) {
 687
 688         Optional<VpnInterface> optVpnInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, identifier);
 689
 690         if (optVpnInterface.isPresent()) {
 691             VpnInterface currVpnIntf = optVpnInterface.get();
 692             String prefix = VpnUtil.getIpPrefix(adj.getIpAddress());
 693             String rd = getRouteDistinguisher(currVpnIntf.getVpnInstanceName());
 694             InstanceIdentifier<Adjacencies> adjPath = identifier.augmentation(Adjacencies.class);
 695             Optional<Adjacencies> optAdjacencies = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, adjPath);
 696             long label =
 697                     VpnUtil.getUniqueId(idManager, VpnConstants.VPN_IDPOOL_NAME,
 698                             VpnUtil.getNextHopLabelKey((rd != null) ? rd : currVpnIntf.getVpnInstanceName(), prefix));
 699
 700             List<Adjacency> adjacencies;
 701             if (optAdjacencies.isPresent()) {
 702                 adjacencies = optAdjacencies.get().getAdjacency();
 703             } else {
 704                 //This code will not be hit since VM adjacency will always be there
 705                 adjacencies = new ArrayList<>();
 706             }
 707
 708             adjacencies.add(new AdjacencyBuilder(adj).setLabel(label).setNextHopIp(adj.getNextHopIp())
 709                     .setIpAddress(prefix).setKey(new AdjacencyKey(prefix)).build());
 710
 711             Adjacencies aug = VpnUtil.getVpnInterfaceAugmentation(adjacencies);
 712             VpnInterface newVpnIntf = VpnUtil.getVpnInterface(currVpnIntf.getName(), currVpnIntf.getVpnInstanceName(), aug);
 713
 714             VpnUtil.syncUpdate(broker, LogicalDatastoreType.OPERATIONAL, identifier, newVpnIntf);
 715             addExtraRoute(adj.getIpAddress(), adj.getNextHopIp(), rd, currVpnIntf.getVpnInstanceName(), (int) label, currVpnIntf.getName());
 716
 717         }
 718
 719     }
 720
 721     protected void delAdjFromVpnInterface(InstanceIdentifier<VpnInterface> identifier, Adjacency adj) {
 722         Optional<VpnInterface> optVpnInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, identifier);
 723
 724         if (optVpnInterface.isPresent()) {
 725             VpnInterface currVpnIntf = optVpnInterface.get();
 726
 727             InstanceIdentifier<Adjacencies> path = identifier.augmentation(Adjacencies.class);
 728             Optional<Adjacencies> optAdjacencies = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, path);
 729             if (optAdjacencies.isPresent()) {
 730                 List<Adjacency> adjacencies = optAdjacencies.get().getAdjacency();
 731
 732                 if (!adjacencies.isEmpty()) {
 733                     String rd = getRouteDistinguisher(currVpnIntf.getVpnInstanceName());
 734                     LOG.trace("Adjacencies are " + adjacencies);
 735                     Iterator<Adjacency> adjIt = adjacencies.iterator();
 736                     while (adjIt.hasNext()) {
 737                         Adjacency adjElem = adjIt.next();
 738                         if (adjElem.getIpAddress().equals(adj.getIpAddress())) {
 739                             VpnUtil.releaseId(idManager, VpnConstants.VPN_IDPOOL_NAME,
 740                                     VpnUtil.getNextHopLabelKey(rd, adj.getIpAddress()));
 741                             adjIt.remove();
 742
 743                             Adjacencies aug = VpnUtil.getVpnInterfaceAugmentation(adjacencies);
 744                             VpnInterface newVpnIntf = VpnUtil.getVpnInterface(currVpnIntf.getName(),
 745                                                                               currVpnIntf.getVpnInstanceName(),
 746                                                                               aug);
 747
 748                             VpnUtil.syncUpdate(broker, LogicalDatastoreType.OPERATIONAL, identifier, newVpnIntf);
 749
 750                             delExtraRoute(adj.getIpAddress(), rd, currVpnIntf.getVpnInstanceName());
 751                             break;
 752                         }
 753
 754                     }
 755                 }
 756             }
 757         }
 758
 759     }
 760
 761     protected void addExtraRoute(String destination, String nextHop, String rd, String routerID, int label, String intfName) {
 762
 763         //add extra route to vpn mapping; advertise with nexthop as tunnel ip
 764         VpnUtil.syncUpdate(
 765             broker,
 766             LogicalDatastoreType.OPERATIONAL,
 767             VpnUtil.getVpnToExtrarouteIdentifier(
 768                 (rd != null) ? rd : routerID, destination),
 769             VpnUtil.getVpnToExtraroute(destination, nextHop));
 770
 771         if (intfName != null && !intfName.isEmpty()) {
 772             BigInteger dpnId = InterfaceUtils.getDpnForInterface(interfaceManager, intfName);
 773             String nextHopIp = InterfaceUtils.getEndpointIpAddressForDPN(broker, dpnId);
 774             if (nextHopIp == null || nextHopIp.isEmpty()) {
 775                 LOG.warn("NextHop for interface {} is null / empty. Failed advertising extra route for prefix {}", intfName, destination);
 776             }
 777             nextHop = nextHopIp;
 778         }
 779         if (rd != null) {
 780             addPrefixToBGP(rd, destination, nextHop, label);
 781         } else {
 782             // ### add FIB route directly
 783             addFibEntryToDS(routerID, destination, nextHop, label);
 784         }
 785     }
 786
 787     protected void delExtraRoute(String destination, String rd, String routerID) {
 788         if (rd != null) {
 789             removePrefixFromBGP(rd, destination);
 790         } else {
 791             // ### add FIB route directly
 792             removeFibEntryFromDS(routerID, destination);
 793         }
 794     }
 795
 796     class VpnInterfaceOpListener extends org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener<VpnInterface> {
 797
 798         public VpnInterfaceOpListener() {
 799             super(VpnInterface.class);
 800         }
 801
 802         @Override
 803         protected void remove(InstanceIdentifier<VpnInterface> identifier, VpnInterface del) {
 804             final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 805             String interfaceName = key.getName();
 806             String vpnName = del.getVpnInstanceName();
 807
 808             LOG.trace("VpnInterfaceOpListener removed: interface name {} vpnName {}", interfaceName, vpnName);
 809             //decrement the vpn interface count in Vpn Instance Op Data
 810             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance>
 811                     id = VpnUtil.getVpnInstanceToVpnIdIdentifier(vpnName);
 812             Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance> vpnInstance
 813                     = VpnUtil.read(broker, LogicalDatastoreType.CONFIGURATION, id);
 814
 815             if (vpnInstance.isPresent()) {
 816                 String rd = null;
 817                 rd = vpnInstance.get().getVrfId();
 818                 //String rd = getRouteDistinguisher(del.getVpnInstanceName());
 819
 820                 VpnInstanceOpDataEntry vpnInstOp = VpnUtil.getVpnInstanceOpData(broker, rd);
 821                 LOG.trace("VpnInterfaceOpListener removed: interface name {} rd {} vpnName {} in Vpn Op Instance {}",
 822                         interfaceName, rd, vpnName, vpnInstOp);
 823
 824                 if (vpnInstOp != null) {
 825                     Long ifCnt = 0L;
 826                     ifCnt = vpnInstOp.getVpnInterfaceCount();
 827                     LOG.trace("VpnInterfaceOpListener removed: interface name {} rd {} vpnName {} Intf count {}",
 828                             interfaceName, rd, vpnName, ifCnt);
 829                     if ((ifCnt != null) && (ifCnt > 0)) {
 830                         VpnUtil.asyncUpdate(broker, LogicalDatastoreType.OPERATIONAL,
 831                                 VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 832                                 VpnUtil.updateIntfCntInVpnInstOpData(ifCnt - 1, rd), VpnUtil.DEFAULT_CALLBACK);
 833                     }
 834
 835                     // Vpn Interface removed => No more adjacencies from it.
 836                     // Hence clean up interface from vpn-dpn-interface list.
 837                     Adjacency adjacency = del.getAugmentation(Adjacencies.class).getAdjacency().get(0);
 838                     Optional<Prefixes> prefixToInterface = Optional.absent();
 839                     prefixToInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL,
 840                             VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 841                                     VpnUtil.getIpPrefix(adjacency.getIpAddress())));
 842                     if (!prefixToInterface.isPresent()) {
 843                         prefixToInterface = VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL,
 844                                 VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 845                                         VpnUtil.getIpPrefix(adjacency.getNextHopIp())));
 846                     }
 847                     if (prefixToInterface.isPresent()) {
 848                         VpnUtil.delete(broker, LogicalDatastoreType.OPERATIONAL,
 849                                 VpnUtil.getPrefixToInterfaceIdentifier(vpnInstOp.getVpnId(),
 850                                         prefixToInterface.get().getIpAddress()),
 851                                 VpnUtil.DEFAULT_CALLBACK);
 852                         updateDpnDbs(prefixToInterface.get().getDpnId(), del.getVpnInstanceName(), interfaceName, false);
 853                     }
 854                 }
 855             } else {
 856                 LOG.error("rd not retrievable as vpninstancetovpnid for vpn {} is absent, trying rd as ", vpnName, vpnName);
 857             }
 858             notifyTaskIfRequired(interfaceName);
 859         }
 860
 861         private void notifyTaskIfRequired(String intfName) {
 862             Runnable notifyTask = vpnIntfMap.remove(intfName);
 863             if (notifyTask == null) {
 864                 return;
 865             }
 866             executorService.execute(notifyTask);
 867         }
 868
 869         @Override
 870         protected void update(InstanceIdentifier<VpnInterface> identifier, VpnInterface original, VpnInterface update) {
 871         }
 872
 873         @Override
 874         protected void add(InstanceIdentifier<VpnInterface> identifier, VpnInterface add) {
 875             final VpnInterfaceKey key = identifier.firstKeyOf(VpnInterface.class, VpnInterfaceKey.class);
 876             String interfaceName = key.getName();
 877
 878             //increment the vpn interface count in Vpn Instance Op Data
 879             Long ifCnt = 0L;
 880             String rd = getRouteDistinguisher(add.getVpnInstanceName());
 881             if(rd == null || rd.isEmpty()) rd = add.getVpnInstanceName();
 882             VpnInstanceOpDataEntry vpnInstOp = VpnUtil.getVpnInstanceOpData(broker, rd);
 883             if(vpnInstOp != null &&  vpnInstOp.getVpnInterfaceCount() != null) {
 884                 ifCnt = vpnInstOp.getVpnInterfaceCount();
 885             }
 886
 887             LOG.trace("VpnInterfaceOpListener add: interface name {} rd {} interface count in Vpn Op Instance {}", interfaceName, rd, ifCnt);
 888
 889             VpnUtil.asyncUpdate(broker, LogicalDatastoreType.OPERATIONAL,
 890                     VpnUtil.getVpnInstanceOpDataIdentifier(rd),
 891                     VpnUtil.updateIntfCntInVpnInstOpData(ifCnt + 1, rd), VpnUtil.DEFAULT_CALLBACK);
 892
 893
 894         }
 895     }
 896
 897     protected void updatePrefixesForDPN(BigInteger dpnId, UpdateRouteAction action) {
 898
 899         LOG.info("Tunnel event triggered {} for Dpn:{} ", action.name(), dpnId);
 900         InstanceIdentifierBuilder<VpnInstances> idBuilder = InstanceIdentifier.builder(VpnInstances.class);
 901         InstanceIdentifier<VpnInstances> vpnInstancesId = idBuilder.build();
 902         Optional<VpnInstances> vpnInstances = VpnUtil.read(broker, LogicalDatastoreType.CONFIGURATION, vpnInstancesId);
 903
 904         if (vpnInstances.isPresent()) {
 905             List<VpnInstance> vpnInstanceList = vpnInstances.get().getVpnInstance();
 906             Iterator<VpnInstance> vpnInstIter = vpnInstanceList.iterator();
 907             while (vpnInstIter.hasNext()) {
 908                 VpnInstance vpnInstance = vpnInstIter.next();
 909                 try {
 910                     VpnAfConfig vpnConfig = vpnInstance.getIpv4Family();
 911                     String rd = vpnConfig.getRouteDistinguisher();
 912                     if (rd == null || rd.isEmpty()) {
 913                         rd = vpnInstance.getVpnInstanceName();
 914                     }
 915                     InstanceIdentifier<VpnToDpnList> id =
 916                         VpnUtil.getVpnToDpnListIdentifier(rd, dpnId);
 917                     Optional<VpnToDpnList> dpnInVpn =
 918                         VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, id);
 919                     if (dpnInVpn.isPresent()) {
 920                         // if (action == UpdateRouteAction.ADVERTISE_ROUTE) {
 921                         //    fibManager.populateFibOnNewDpn(dpnId, VpnUtil
 922                         //        .getVpnId(broker, vpnInstance.getVpnInstanceName()), rd);
 923                         // }
 924                         List<org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data
 925                             .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces>
 926                             vpnInterfaces = dpnInVpn.get().getVpnInterfaces();
 927                         for (org.opendaylight.yang.gen.v1.urn.opendaylight.l3vpn.rev130911.vpn.instance.op.data
 928                             .vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces vpnInterface : vpnInterfaces) {
 929                             InstanceIdentifier<VpnInterface> vpnIntfId =
 930                                 VpnUtil.getVpnInterfaceIdentifier(vpnInterface.getInterfaceName());
 931                             InstanceIdentifier<Adjacencies> path =
 932                                 vpnIntfId.augmentation(Adjacencies.class);
 933                             Optional<Adjacencies> adjacencies =
 934                                 VpnUtil.read(broker, LogicalDatastoreType.OPERATIONAL, path);
 935
 936                             if (adjacencies.isPresent()) {
 937                                 List<Adjacency> adjacencyList = adjacencies.get().getAdjacency();
 938                                 Iterator<Adjacency> adjacencyIterator = adjacencyList.iterator();
 939
 940                                 while (adjacencyIterator.hasNext()) {
 941                                     Adjacency adjacency = adjacencyIterator.next();
 942                                     try {
 943                                         if (action == UpdateRouteAction.ADVERTISE_ROUTE)
 944                                             bgpManager.addPrefix(rd, adjacency.getIpAddress(),
 945                                                                  adjacency.getNextHopIp(),
 946                                                                  adjacency.getLabel().intValue());
 947                                         else if (action == UpdateRouteAction.WITHDRAW_ROUTE)
 948                                             bgpManager.deletePrefix(rd, adjacency.getIpAddress());
 949                                     } catch (Exception e) {
 950                                         LOG.error("Exception when updating prefix {} in vrf {} to BGP",
 951                                             adjacency.getIpAddress(), rd);
 952                                     }
 953                                 }
 954                             }
 955
 956                         }
 957                         // if (action == UpdateRouteAction.WITHDRAW_ROUTE) {
 958                         //    fibManager.cleanUpDpnForVpn(dpnId, VpnUtil.getVpnId(broker, vpnInstance.getVpnInstanceName()), rd);
 959                         // }
 960                     }
 961                 } catch (Exception e) {
 962                     LOG.error("updatePrefixesForDPN {} in vpn {} failed", dpnId, vpnInstance.getVpnInstanceName(), e);
 963                 }
 964             }
 965         }
 966     }
 967
 968 }