vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/VpnInstanceListener.java

   1 /*
   2  * Copyright (c) 2015 - 2017 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.netvirt.vpnmanager;
   9
  10 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  11 import static org.opendaylight.genius.infra.Datastore.OPERATIONAL;
  12 import static org.opendaylight.mdsal.binding.api.WriteTransaction.CREATE_MISSING_PARENTS;
  13
  14 import com.google.common.util.concurrent.FutureCallback;
  15 import com.google.common.util.concurrent.Futures;
  16 import com.google.common.util.concurrent.ListenableFuture;
  17 import com.google.common.util.concurrent.MoreExecutors;
  18 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  19 import java.util.ArrayList;
  20 import java.util.Arrays;
  21 import java.util.Collections;
  22 import java.util.List;
  23 import java.util.Optional;
  24 import java.util.concurrent.Callable;
  25 import java.util.concurrent.ExecutionException;
  26 import java.util.concurrent.locks.ReentrantLock;
  27 import javax.annotation.PreDestroy;
  28 import javax.inject.Inject;
  29 import javax.inject.Singleton;
  30 import org.eclipse.jdt.annotation.Nullable;
  31 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  32 import org.opendaylight.genius.infra.Datastore.Configuration;
  33 import org.opendaylight.genius.infra.Datastore.Operational;
  34 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  35 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  36 import org.opendaylight.genius.infra.TypedWriteTransaction;
  37 import org.opendaylight.genius.mdsalutil.FlowEntity;
  38 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  39 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  40 import org.opendaylight.genius.mdsalutil.MatchInfo;
  41 import org.opendaylight.genius.mdsalutil.MetaDataUtil;
  42 import org.opendaylight.genius.mdsalutil.NWUtil;
  43 import org.opendaylight.genius.mdsalutil.NwConstants;
  44 import org.opendaylight.genius.mdsalutil.instructions.InstructionGotoTable;
  45 import org.opendaylight.genius.mdsalutil.instructions.InstructionWriteMetadata;
  46 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  47 import org.opendaylight.genius.mdsalutil.matches.MatchTunnelId;
  48 import org.opendaylight.genius.utils.JvmGlobalLocks;
  49 import org.opendaylight.genius.utils.SystemPropertyReader;
  50 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  51 import org.opendaylight.infrautils.utils.concurrent.Executors;
  52 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  53 import org.opendaylight.mdsal.binding.api.DataBroker;
  54 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  55 import org.opendaylight.netvirt.fibmanager.api.IFibManager;
  56 import org.opendaylight.serviceutils.tools.listener.AbstractAsyncDataTreeChangeListener;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.ExternalTunnelList;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.external.tunnel.list.ExternalTunnel;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.DcGatewayIpList;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.dc.gateway.ip.list.DcGatewayIp;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.id.to.vpn.instance.VpnIds;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryBuilder;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnTargetsBuilder;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpntargets.VpnTargetBuilder;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpntargets.VpnTargetKey;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.VpnInstances;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.vpn.instances.VpnInstance;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.vpn.instances.vpn.instance.VpnTargets;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.vpn.instances.vpn.instance.vpntargets.VpnTarget;
  72 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  73 import org.opendaylight.yangtools.yang.common.Uint32;
  74 import org.opendaylight.yangtools.yang.common.Uint64;
  75 import org.slf4j.Logger;
  76 import org.slf4j.LoggerFactory;
  77
  78 @Singleton
  79 public class VpnInstanceListener extends AbstractAsyncDataTreeChangeListener<VpnInstance> {
  80     private static final Logger LOG = LoggerFactory.getLogger(VpnInstanceListener.class);
  81     private static final String LOGGING_PREFIX_ADD = "VPN-ADD:";
  82     private static final String LOGGING_PREFIX_UPDATE = "VPN-UPDATE:";
  83     private static final String LOGGING_PREFIX_DELETE = "VPN-REMOVE:";
  84     private final DataBroker dataBroker;
  85     private final ManagedNewTransactionRunner txRunner;
  86     private final IdManagerService idManager;
  87     private final VpnInterfaceManager vpnInterfaceManager;
  88     private final IFibManager fibManager;
  89     private final VpnOpDataSyncer vpnOpDataNotifier;
  90     private final IMdsalApiManager mdsalManager;
  91     private final JobCoordinator jobCoordinator;
  92     private final VpnUtil vpnUtil;
  93
  94     @Inject
  95     public VpnInstanceListener(final DataBroker dataBroker, final IdManagerService idManager,
  96             final VpnInterfaceManager vpnInterfaceManager, final IFibManager fibManager,
  97             final VpnOpDataSyncer vpnOpDataSyncer, final IMdsalApiManager mdsalManager,
  98             final JobCoordinator jobCoordinator, VpnUtil vpnUtil) {
  99         super(dataBroker, LogicalDatastoreType.CONFIGURATION,
 100                 InstanceIdentifier.create(VpnInstances.class).child(VpnInstance.class),
 101                 Executors.newListeningSingleThreadExecutor("VpnInstanceListener", LOG));
 102         this.dataBroker = dataBroker;
 103         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
 104         this.idManager = idManager;
 105         this.vpnInterfaceManager = vpnInterfaceManager;
 106         this.fibManager = fibManager;
 107         this.vpnOpDataNotifier = vpnOpDataSyncer;
 108         this.mdsalManager = mdsalManager;
 109         this.jobCoordinator = jobCoordinator;
 110         this.vpnUtil = vpnUtil;
 111         start();
 112     }
 113
 114     public void start() {
 115         LOG.info("{} start", getClass().getSimpleName());
 116     }
 117
 118     @Override
 119     @PreDestroy
 120     public void close() {
 121         super.close();
 122         Executors.shutdownAndAwaitTermination(getExecutorService());
 123     }
 124
 125
 126     @Override
 127     public void remove(InstanceIdentifier<VpnInstance> identifier, VpnInstance del) {
 128         LOG.trace("{} : VPN event key: {}, value: {}", LOGGING_PREFIX_DELETE, identifier, del);
 129         final String vpnName = del.getVpnInstanceName();
 130         Optional<VpnInstanceOpDataEntry> vpnOpValue;
 131         String primaryRd = vpnUtil.getVpnRd(vpnName);
 132         if (primaryRd == null) {
 133             LOG.error("{}, failed to remove VPN: primaryRd is null for vpn {}", LOGGING_PREFIX_DELETE, vpnName);
 134             return;
 135         }
 136
 137         //TODO(vpnteam): Entire code would need refactoring to listen only on the parent object - VPNInstance
 138         try {
 139             vpnOpValue = SingleTransactionDataBroker.syncReadOptional(dataBroker, LogicalDatastoreType.OPERATIONAL,
 140                     VpnUtil.getVpnInstanceOpDataIdentifier(primaryRd));
 141         } catch (InterruptedException | ExecutionException e) {
 142             LOG.error("{}, failed to remove VPN: Exception while retrieving VpnInstanceOpDataEntry for VPN {}. ",
 143                     LOGGING_PREFIX_DELETE,  vpnName, e);
 144             return;
 145         }
 146
 147         if (!vpnOpValue.isPresent()) {
 148             LOG.error("{}, failed to remove VPN: Unable to retrieve VpnInstanceOpDataEntry for VPN {}. ",
 149                 LOGGING_PREFIX_DELETE, vpnName);
 150             return;
 151         } else {
 152             jobCoordinator.enqueueJob("VPN-" + vpnName, () ->
 153                 Collections.singletonList(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx -> {
 154                     VpnInstanceOpDataEntryBuilder builder = null;
 155                     InstanceIdentifier<VpnInstanceOpDataEntry> id = null;
 156                     if (primaryRd != null) {
 157                         builder = new VpnInstanceOpDataEntryBuilder().setVrfId(primaryRd)
 158                                 .setVpnState(VpnInstanceOpDataEntry.VpnState.PendingDelete);
 159                         id = VpnUtil.getVpnInstanceOpDataIdentifier(primaryRd);
 160                     } else {
 161                         builder = new VpnInstanceOpDataEntryBuilder().setVrfId(vpnName)
 162                                 .setVpnState(VpnInstanceOpDataEntry.VpnState.PendingDelete);
 163                         id = VpnUtil.getVpnInstanceOpDataIdentifier(vpnName);
 164                     }
 165                     tx.merge(id, builder.build());
 166
 167                     LOG.info("{} call: Operational status set to PENDING_DELETE for vpn {} with rd {}",
 168                             LOGGING_PREFIX_DELETE, vpnName, primaryRd);
 169                 })), SystemPropertyReader.getDataStoreJobCoordinatorMaxRetries());
 170         }
 171     }
 172
 173     @Override
 174     public void update(InstanceIdentifier<VpnInstance> identifier,
 175         VpnInstance original, VpnInstance update) {
 176         LOG.trace("VPN-UPDATE: update: VPN event key: {}, value: {}.", identifier, update);
 177         String vpnName = update.getVpnInstanceName();
 178         if (original != null && update != null
 179                 && original.getRouteDistinguisher() != null
 180                 && update.getRouteDistinguisher() != null
 181                 && original.getRouteDistinguisher().size()
 182                 !=  update.getRouteDistinguisher().size()) {
 183             LOG.debug("VPN-UPDATE: VpnInstance:{} updated with new RDs: {} from old RDs: {}", vpnName,
 184                     update.getRouteDistinguisher(),  original.getRouteDistinguisher());
 185             vpnUtil.updateVpnInstanceWithRdList(vpnName, update.getRouteDistinguisher());
 186         }
 187         vpnInterfaceManager.updateVpnInterfacesForUnProcessAdjancencies(vpnName);
 188     }
 189
 190     @Override
 191     public void add(final InstanceIdentifier<VpnInstance> identifier, final VpnInstance value) {
 192         LOG.trace("{} add: Add VPN event key: {}, value: {}", LOGGING_PREFIX_ADD, identifier, value);
 193         final String vpnName = value.getVpnInstanceName();
 194         jobCoordinator.enqueueJob("VPN-" + vpnName, new AddVpnInstanceWorker(dataBroker, value),
 195                 SystemPropertyReader.getDataStoreJobCoordinatorMaxRetries());
 196     }
 197
 198     private class AddVpnInstanceWorker implements Callable<List<? extends ListenableFuture<?>>> {
 199         private final Logger log = LoggerFactory.getLogger(AddVpnInstanceWorker.class);
 200         VpnInstance vpnInstance;
 201         DataBroker broker;
 202
 203         AddVpnInstanceWorker(DataBroker broker,
 204                 VpnInstance value) {
 205             this.broker = broker;
 206             this.vpnInstance = value;
 207         }
 208
 209         @Override
 210         public List<ListenableFuture<Void>> call() {
 211             // If another renderer(for eg : CSS) needs to be supported, check can be performed here
 212             // to call the respective helpers.
 213             List<ListenableFuture<Void>> futures = new ArrayList<>(2);
 214             futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION, confTx -> {
 215                 ListenableFuture<Void> future = txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, operTx ->
 216                         addVpnInstance(vpnInstance, confTx, operTx));
 217                 ListenableFutures.addErrorLogging(future, LOG, "{} call: error creating VPN {} rd {}",
 218                         LOGGING_PREFIX_ADD, vpnInstance.getVpnInstanceName(),
 219                         vpnInstance.getRouteDistinguisher());
 220                 futures.add(future);
 221             }));
 222             Futures.addCallback(Futures.allAsList(futures),
 223                                 new PostAddVpnInstanceWorker(vpnInstance , vpnInstance.getVpnInstanceName()),
 224                                 MoreExecutors.directExecutor());
 225             return futures;
 226         }
 227     }
 228
 229     // TODO Clean up the exception handling
 230     @SuppressWarnings("checkstyle:IllegalCatch")
 231     private void addVpnInstance(VpnInstance value, TypedWriteTransaction<Configuration> writeConfigTxn,
 232             TypedWriteTransaction<Operational> writeOperTxn) {
 233         if (writeConfigTxn == null) {
 234             ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION, tx ->
 235                 addVpnInstance(value, tx, writeOperTxn)), LOG, "Error adding VPN instance {}", value);
 236             return;
 237         }
 238         if (writeOperTxn == null) {
 239             ListenableFutures.addErrorLogging(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, tx ->
 240                 addVpnInstance(value, writeConfigTxn, tx)), LOG, "Error adding VPN instance {}", value);
 241             return;
 242         }
 243         String vpnInstanceName = value.getVpnInstanceName();
 244
 245         Uint32 vpnId = vpnUtil.getUniqueId(VpnConstants.VPN_IDPOOL_NAME, vpnInstanceName);
 246         if (vpnId.longValue() == 0) {
 247             LOG.error("{} addVpnInstance: Unable to fetch label from Id Manager. Bailing out of adding operational"
 248                     + " data for Vpn Instance {}", LOGGING_PREFIX_ADD, value.getVpnInstanceName());
 249             return;
 250         }
 251         LOG.info("{} addVpnInstance: VPN Id {} generated for VpnInstanceName {}", LOGGING_PREFIX_ADD, vpnId,
 252                 vpnInstanceName);
 253         String primaryRd = VpnUtil.getPrimaryRd(value);
 254         org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance
 255             vpnInstanceToVpnId = VpnUtil.getVpnInstanceToVpnId(vpnInstanceName, vpnId, primaryRd);
 256
 257         writeConfigTxn.put(VpnOperDsUtils.getVpnInstanceToVpnIdIdentifier(vpnInstanceName),
 258             vpnInstanceToVpnId, CREATE_MISSING_PARENTS);
 259
 260         VpnIds vpnIdToVpnInstance = VpnUtil.getVpnIdToVpnInstance(vpnId, value.getVpnInstanceName(),
 261             primaryRd, VpnUtil.isBgpVpn(vpnInstanceName, primaryRd));
 262
 263         writeConfigTxn.put(VpnUtil.getVpnIdToVpnInstanceIdentifier(vpnId), vpnIdToVpnInstance, CREATE_MISSING_PARENTS);
 264
 265         try {
 266             String cachedTransType = fibManager.getConfTransType();
 267             if (cachedTransType.equals("Invalid")) {
 268                 try {
 269                     fibManager.setConfTransType("L3VPN", "VXLAN");
 270                 } catch (Exception e) {
 271                     LOG.error("{} addVpnInstance: Exception caught setting the L3VPN tunnel transportType for vpn {}",
 272                             LOGGING_PREFIX_ADD, vpnInstanceName, e);
 273                 }
 274             } else {
 275                 LOG.debug("{} addVpnInstance: Configured tunnel transport type for L3VPN {} as {}", LOGGING_PREFIX_ADD,
 276                         vpnInstanceName, cachedTransType);
 277             }
 278         } catch (Exception e) {
 279             LOG.error("{} addVpnInstance: Error when trying to retrieve tunnel transport type for L3VPN {}",
 280                     LOGGING_PREFIX_ADD, vpnInstanceName, e);
 281         }
 282
 283         VpnInstanceOpDataEntryBuilder builder =
 284                 new VpnInstanceOpDataEntryBuilder().setVrfId(primaryRd).setVpnId(vpnId)
 285                         .setVpnInstanceName(vpnInstanceName)
 286                         .setVpnState(VpnInstanceOpDataEntry.VpnState.Created);
 287         if (VpnUtil.isBgpVpn(vpnInstanceName, primaryRd)) {
 288             List<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn
 289                 .instance.op.data.entry.vpntargets.VpnTarget> opVpnTargetList = new ArrayList<>();
 290             builder.setBgpvpnType(VpnInstanceOpDataEntry.BgpvpnType.BGPVPNExternal);
 291             if (value.getL3vni() != null) {
 292                 builder.setL3vni(value.getL3vni());
 293             }
 294             if (value.isL2vpn()) {
 295                 builder.setType(VpnInstanceOpDataEntry.Type.L2);
 296             }
 297             VpnTargets vpnTargets = value.getVpnTargets();
 298             if (vpnTargets != null) {
 299                 List<VpnTarget> vpnTargetList = vpnTargets.getVpnTarget();
 300                 if (vpnTargetList != null) {
 301                     for (VpnTarget vpnTarget : vpnTargetList) {
 302                         VpnTargetBuilder vpnTargetBuilder =
 303                             new VpnTargetBuilder().withKey(new VpnTargetKey(vpnTarget.key().getVrfRTValue()))
 304                                 .setVrfRTType(org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn
 305                                     .instance.op.data.vpn.instance.op.data.entry.vpntargets.VpnTarget.VrfRTType
 306                                     .forValue(vpnTarget.getVrfRTType().getIntValue())).setVrfRTValue(
 307                                 vpnTarget.getVrfRTValue());
 308                         opVpnTargetList.add(vpnTargetBuilder.build());
 309                     }
 310                 }
 311             }
 312             VpnTargetsBuilder vpnTargetsBuilder = new VpnTargetsBuilder().setVpnTarget(opVpnTargetList);
 313             builder.setVpnTargets(vpnTargetsBuilder.build());
 314
 315             List<String> rds = value.getRouteDistinguisher();
 316             builder.setRd(rds);
 317         } else {
 318             builder.setBgpvpnType(VpnInstanceOpDataEntry.BgpvpnType.VPN);
 319         }
 320         writeOperTxn.merge(VpnUtil.getVpnInstanceOpDataIdentifier(primaryRd), builder.build(), CREATE_MISSING_PARENTS);
 321         LOG.info("{} addVpnInstance: VpnInstanceOpData populated successfully for vpn {} rd {}", LOGGING_PREFIX_ADD,
 322                 vpnInstanceName, primaryRd);
 323     }
 324
 325     private class PostAddVpnInstanceWorker implements FutureCallback<List<Void>> {
 326         private final Logger log = LoggerFactory.getLogger(PostAddVpnInstanceWorker.class);
 327         VpnInstance vpnInstance;
 328         String vpnName;
 329
 330         PostAddVpnInstanceWorker(VpnInstance vpnInstance, String vpnName) {
 331             this.vpnInstance = vpnInstance;
 332             this.vpnName = vpnName;
 333         }
 334
 335         /**
 336          * This implies that all the future instances have returned success. -- TODO: Confirm this
 337          */
 338         @Override
 339         public void onSuccess(List<Void> voids) {
 340             /*
 341             if rd is null, then its either a router vpn instance (or) a vlan external network vpn instance.
 342             if rd is non-null, then it is a bgpvpn instance
 343              */
 344             List<String> rd = vpnInstance.getRouteDistinguisher();
 345             if (rd == null || addBgpVrf()) {
 346                 notifyTask();
 347                 vpnInterfaceManager.vpnInstanceIsReady(vpnName);
 348             }
 349             log.info("{} onSuccess: Vpn Instance Op Data addition for {} successful.", LOGGING_PREFIX_ADD, vpnName);
 350             VpnInstanceOpDataEntry vpnInstanceOpDataEntry = vpnUtil.getVpnInstanceOpData(
 351                     VpnUtil.getPrimaryRd(vpnInstance));
 352
 353             // bind service on each tunnel interface
 354             //TODO (KIRAN): Add a new listener to handle creation of new DC-GW binding and deletion of existing DC-GW.
 355             if (VpnUtil.isL3VpnOverVxLan(vpnInstance.getL3vni())) { //Handled for L3VPN Over VxLAN
 356                 for (String tunnelInterfaceName: getDcGatewayTunnelInterfaceNameList()) {
 357                     vpnUtil.bindService(vpnInstance.getVpnInstanceName(), tunnelInterfaceName,
 358                             true/*isTunnelInterface*/);
 359                 }
 360
 361                 // install flow
 362                 List<MatchInfo> mkMatches = new ArrayList<>();
 363                 mkMatches.add(new MatchTunnelId(Uint64.valueOf(vpnInstance.getL3vni())));
 364
 365                 List<InstructionInfo> instructions =
 366                         Arrays.asList(new InstructionWriteMetadata(MetaDataUtil.getVpnIdMetadata(vpnInstanceOpDataEntry
 367                                 .getVpnId().toJava()), MetaDataUtil.METADATA_MASK_VRFID),
 368                                 new InstructionGotoTable(NwConstants.L3_GW_MAC_TABLE));
 369                 try {
 370                     for (Uint64 dpnId: NWUtil.getOperativeDPNs(dataBroker)) {
 371                         String flowRef = getFibFlowRef(dpnId, NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE,
 372                                 vpnName, VpnConstants.DEFAULT_FLOW_PRIORITY);
 373                         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpnId,
 374                                 NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE, flowRef,
 375                                 VpnConstants.DEFAULT_FLOW_PRIORITY, "VxLAN VPN Tunnel Bind Service",
 376                                 0, 0, NwConstants.COOKIE_VM_FIB_TABLE, mkMatches, instructions);
 377                         mdsalManager.installFlow(dpnId, flowEntity);
 378                     }
 379                 } catch (ExecutionException | InterruptedException e) {
 380                     LOG.error("PostAddVpnInstanceWorker: Exception while getting the list of Operative DPNs for Vpn {}",
 381                             vpnName, e);
 382                 }
 383
 384                 ///////////////////////
 385             }
 386         }
 387
 388         // TODO Clean up the exception handling
 389         @SuppressWarnings("checkstyle:IllegalCatch")
 390         private boolean addBgpVrf() {
 391             String primaryRd = vpnUtil.getPrimaryRd(vpnName);
 392             List<VpnTarget> vpnTargetList = vpnInstance.getVpnTargets().getVpnTarget();
 393
 394             if (vpnTargetList == null) {
 395                 log.error("{} addBgpVrf: vpn target list is empty for vpn {} RD {}", LOGGING_PREFIX_ADD,
 396                         this.vpnName, primaryRd);
 397                 return false;
 398             }
 399             // FIXME: separate out to somehow?
 400             final ReentrantLock lock = JvmGlobalLocks.getLockForString(vpnName);
 401             lock.lock();
 402             try {
 403                 fibManager.addVrfTable(primaryRd, null);
 404             } finally {
 405                 lock.unlock();
 406             }
 407             vpnInterfaceManager.handleVpnsExportingRoutes(this.vpnName, primaryRd);
 408             return true;
 409         }
 410
 411         private void notifyTask() {
 412             vpnOpDataNotifier.notifyVpnOpDataReady(VpnOpDataSyncer.VpnOpDataType.vpnInstanceToId, vpnName);
 413             vpnOpDataNotifier.notifyVpnOpDataReady(VpnOpDataSyncer.VpnOpDataType.vpnOpData, vpnName);
 414         }
 415
 416         /**
 417          * This method is used to handle failure callbacks.
 418          * If more retry needed, the retrycount is decremented and mainworker is executed again.
 419          * After retries completed, rollbackworker is executed.
 420          * If rollbackworker fails, this is a double-fault. Double fault is logged and ignored.
 421          */
 422
 423         @Override
 424         public void onFailure(Throwable throwable) {
 425             log.error("{} onFailure: Job for vpnInstance: {} failed with exception:", LOGGING_PREFIX_ADD, vpnName,
 426                     throwable);
 427             vpnInterfaceManager.vpnInstanceFailed(vpnName);
 428         }
 429     }
 430
 431     @Nullable
 432     protected VpnInstanceOpDataEntry getVpnInstanceOpData(String rd) {
 433         InstanceIdentifier<VpnInstanceOpDataEntry> id = VpnUtil.getVpnInstanceOpDataIdentifier(rd);
 434         try {
 435             return SingleTransactionDataBroker.syncReadOptional(dataBroker, LogicalDatastoreType.OPERATIONAL,
 436                     id).orElse(null);
 437         } catch (InterruptedException | ExecutionException e) {
 438             throw new RuntimeException("Error reading VPN instance data for " + rd, e);
 439         }
 440     }
 441
 442     @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
 443             justification = "https://github.com/spotbugs/spotbugs/issues/811")
 444     private List<String> getDcGatewayTunnelInterfaceNameList() {
 445         List<String> tunnelInterfaceNameList = new ArrayList<>();
 446         try {
 447             InstanceIdentifier<DcGatewayIpList> dcGatewayIpListInstanceIdentifier = InstanceIdentifier
 448                     .create(DcGatewayIpList.class);
 449             Optional<DcGatewayIpList> dcGatewayIpListOptional = SingleTransactionDataBroker.syncReadOptional(
 450                     dataBroker, LogicalDatastoreType.CONFIGURATION, dcGatewayIpListInstanceIdentifier);
 451             if (!dcGatewayIpListOptional.isPresent()) {
 452                 LOG.info("No DC gateways configured.");
 453                 return tunnelInterfaceNameList;
 454             }
 455             List<DcGatewayIp> dcGatewayIps = dcGatewayIpListOptional.get().nonnullDcGatewayIp();
 456             InstanceIdentifier<ExternalTunnelList> externalTunnelListId = InstanceIdentifier
 457                     .create(ExternalTunnelList.class);
 458             Optional<ExternalTunnelList> externalTunnelListOptional = SingleTransactionDataBroker.syncReadOptional(
 459                     dataBroker, LogicalDatastoreType.OPERATIONAL, externalTunnelListId);
 460             if (externalTunnelListOptional.isPresent()) {
 461                 List<ExternalTunnel> externalTunnels = externalTunnelListOptional.get().nonnullExternalTunnel();
 462                 List<String> externalTunnelIpList = new ArrayList<>();
 463                 for (ExternalTunnel externalTunnel: externalTunnels) {
 464                     externalTunnelIpList.add(externalTunnel.getDestinationDevice());
 465                 }
 466                 List<String> dcGatewayIpList = new ArrayList<>();
 467                 for (DcGatewayIp dcGatewayIp: dcGatewayIps) {
 468                     dcGatewayIpList.add(dcGatewayIp.getIpAddress().getIpv4Address().toString());
 469                 }
 470                 // Find all externalTunnelIps present in dcGateWayIpList
 471                 List<String> externalTunnelIpsInDcGatewayIpList = new ArrayList<>();
 472                 for (String externalTunnelIp: externalTunnelIpList) {
 473                     for (String dcGateWayIp: dcGatewayIpList) {
 474                         if (externalTunnelIp.contentEquals(dcGateWayIp)) {
 475                             externalTunnelIpsInDcGatewayIpList.add(externalTunnelIp);
 476                         }
 477                     }
 478                 }
 479                 for (String externalTunnelIpsInDcGatewayIp: externalTunnelIpsInDcGatewayIpList) {
 480                     for (ExternalTunnel externalTunnel: externalTunnels) {
 481                         if (externalTunnel.getDestinationDevice().contentEquals(externalTunnelIpsInDcGatewayIp)) {
 482                             tunnelInterfaceNameList.add(externalTunnel.getTunnelInterfaceName());
 483                         }
 484                     }
 485                 }
 486
 487             }
 488         } catch (InterruptedException | ExecutionException e) {
 489             LOG.error("getDcGatewayTunnelInterfaceNameList: Failed to read data store");
 490         }
 491         return tunnelInterfaceNameList;
 492     }
 493
 494     @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
 495             justification = "https://github.com/spotbugs/spotbugs/issues/811")
 496     private String getFibFlowRef(Uint64 dpnId, short tableId, String vpnName, int priority) {
 497         return VpnConstants.FLOWID_PREFIX + dpnId + NwConstants.FLOWID_SEPARATOR + tableId
 498                 + NwConstants.FLOWID_SEPARATOR + vpnName + NwConstants.FLOWID_SEPARATOR + priority;
 499     }
 500 }