vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/InterfaceStateChangeListener.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
  13 import com.google.common.collect.HashBasedTable;
  14 import com.google.common.collect.Table;
  15 import com.google.common.util.concurrent.FutureCallback;
  16 import com.google.common.util.concurrent.Futures;
  17 import com.google.common.util.concurrent.ListenableFuture;
  18 import com.google.common.util.concurrent.MoreExecutors;
  19 import java.util.ArrayList;
  20 import java.util.HashMap;
  21 import java.util.HashSet;
  22 import java.util.List;
  23 import java.util.Map;
  24 import java.util.Optional;
  25 import java.util.Set;
  26 import javax.annotation.PreDestroy;
  27 import javax.inject.Inject;
  28 import javax.inject.Singleton;
  29 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  30 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  31 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  32 import org.opendaylight.infrautils.utils.concurrent.Executors;
  33 import org.opendaylight.mdsal.binding.api.DataBroker;
  34 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  35 import org.opendaylight.netvirt.fibmanager.api.IFibManager;
  36 import org.opendaylight.netvirt.vpnmanager.api.InterfaceUtils;
  37 import org.opendaylight.serviceutils.tools.listener.AbstractAsyncDataTreeChangeListener;
  38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev170119.L2vlan;
  39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfacesState;
  40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  41 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.OperStatus;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.learnt.vpn.vip.to.port.data.LearntVpnVipToPort;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn._interface.op.data.VpnInterfaceOpDataEntry;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.Adjacencies;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.adjacency.list.Adjacency;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.vpn.interfaces.VpnInterface;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.l3vpn.rev200204.vpn.interfaces.vpn._interface.VpnInstanceNames;
  48 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  49 import org.opendaylight.yangtools.yang.common.Uint64;
  50 import org.slf4j.Logger;
  51 import org.slf4j.LoggerFactory;
  52
  53 @Singleton
  54 public class InterfaceStateChangeListener extends AbstractAsyncDataTreeChangeListener<Interface> {
  55
  56     private static final Logger LOG = LoggerFactory.getLogger(InterfaceStateChangeListener.class);
  57     private static final short DJC_MAX_RETRIES = 3;
  58     private final DataBroker dataBroker;
  59     private final ManagedNewTransactionRunner txRunner;
  60     private final VpnInterfaceManager vpnInterfaceManager;
  61     private final VpnUtil vpnUtil;
  62     private final JobCoordinator jobCoordinator;
  63     private final IFibManager fibManager;
  64
  65     Table<OperStatus, OperStatus, IntfTransitionState> stateTable = HashBasedTable.create();
  66
  67     enum IntfTransitionState {
  68         STATE_UP,
  69         STATE_DOWN,
  70         STATE_IGNORE
  71     }
  72
  73     private void initialize() {
  74         //  Interface State Transition Table
  75         //               Up                Down            Unknown
  76         // ---------------------------------------------------------------
  77         /* Up       { STATE_IGNORE,   STATE_DOWN,     STATE_IGNORE }, */
  78         /* Down     { STATE_UP,       STATE_IGNORE,   STATE_IGNORE }, */
  79         /* Unknown  { STATE_UP,       STATE_DOWN,     STATE_IGNORE }, */
  80
  81         stateTable.put(Interface.OperStatus.Up, Interface.OperStatus.Down, IntfTransitionState.STATE_DOWN);
  82         stateTable.put(Interface.OperStatus.Down, Interface.OperStatus.Up, IntfTransitionState.STATE_UP);
  83         stateTable.put(Interface.OperStatus.Unknown, Interface.OperStatus.Up, IntfTransitionState.STATE_UP);
  84         stateTable.put(Interface.OperStatus.Unknown, Interface.OperStatus.Down, IntfTransitionState.STATE_DOWN);
  85     }
  86
  87     @Inject
  88     public InterfaceStateChangeListener(final DataBroker dataBroker, final VpnInterfaceManager vpnInterfaceManager,
  89             final VpnUtil vpnUtil, final JobCoordinator jobCoordinator, final IFibManager fibManager) {
  90         super(dataBroker, LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(InterfacesState.class)
  91                 .child(Interface.class),
  92                 Executors.newListeningSingleThreadExecutor("InterfaceStateChangeListener", LOG));
  93         this.dataBroker = dataBroker;
  94         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  95         this.vpnInterfaceManager = vpnInterfaceManager;
  96         this.vpnUtil = vpnUtil;
  97         this.jobCoordinator = jobCoordinator;
  98         this.fibManager = fibManager;
  99         initialize();
 100     }
 101
 102     public void start() {
 103         LOG.info("{} start", getClass().getSimpleName());
 104     }
 105
 106     @Override
 107     @PreDestroy
 108     public void close() {
 109         super.close();
 110         Executors.shutdownAndAwaitTermination(getExecutorService());
 111     }
 112
 113
 114     @Override
 115     // TODO Clean up the exception handling
 116     @SuppressWarnings("checkstyle:IllegalCatch")
 117     public void add(InstanceIdentifier<Interface> identifier, Interface intrf) {
 118         try {
 119             if (L2vlan.class.equals(intrf.getType())) {
 120                 LOG.info("VPN Interface add event - intfName {} from InterfaceStateChangeListener",
 121                                 intrf.getName());
 122                 jobCoordinator.enqueueJob("VPNINTERFACE-" + intrf.getName(), () -> {
 123                     List<ListenableFuture<Void>> futures = new ArrayList<>(3);
 124                     futures.add(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, writeInvTxn -> {
 125                         //map of prefix and vpn name used, as entry in prefix-to-interface datastore
 126                         // is prerequisite for refresh Fib to avoid race condition leading to missing remote next hop
 127                         // in bucket actions on bgp-vpn delete
 128                         Map<String, Set<String>> mapOfRdAndPrefixesForRefreshFib = new HashMap<>();
 129                         ListenableFuture<Void> configFuture
 130                             = txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION, writeConfigTxn -> {
 131                                 ListenableFuture<Void> operFuture
 132                                     = txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, writeOperTxn -> {
 133                                         final String interfaceName = intrf.getName();
 134                                         LOG.info("Detected interface add event for interface {}", interfaceName);
 135                                         final VpnInterface vpnIf = vpnUtil.getConfiguredVpnInterface(interfaceName);
 136                                         if (vpnIf != null) {
 137                                             for (VpnInstanceNames vpnInterfaceVpnInstance :
 138                                                     vpnIf.nonnullVpnInstanceNames()) {
 139                                                 String vpnName = vpnInterfaceVpnInstance.getVpnName();
 140                                                 String primaryRd = vpnUtil.getPrimaryRd(vpnName);
 141                                                 if (!vpnInterfaceManager.isVpnInstanceReady(vpnName)) {
 142                                                     LOG.info("VPN Interface add event - intfName {} onto vpnName {} "
 143                                                             + "running oper-driven, VpnInstance not ready, holding"
 144                                                             + " on", vpnIf.getName(), vpnName);
 145                                                 } else if (vpnUtil.isVpnPendingDelete(primaryRd)) {
 146                                                     LOG.error("add: Ignoring addition of vpnInterface {}, as"
 147                                                             + " vpnInstance {} with primaryRd {} is already marked for"
 148                                                             + " deletion", interfaceName, vpnName, primaryRd);
 149                                                 } else {
 150                                                     Uint64 intfDpnId = Uint64.ZERO;
 151                                                     try {
 152                                                         intfDpnId = InterfaceUtils.getDpIdFromInterface(intrf);
 153                                                     } catch (Exception e) {
 154                                                         LOG.error("Unable to retrieve dpnId for interface {}. "
 155                                                                 + "Process vpn interface add failed",intrf.getName(),
 156                                                                 e);
 157                                                         return;
 158                                                     }
 159                                                     LOG.error("InterfaceStateChangeListener- Processing ifState"
 160                                                                     + " {} add event with dpnId {}",
 161                                                             intrf.getName(), intfDpnId);
 162                                                     final Uint64 dpnId = intfDpnId;
 163                                                     final int ifIndex = intrf.getIfIndex();
 164                                                     LOG.info("VPN Interface add event - intfName {} onto vpnName {}"
 165                                                             + " running oper-driven", vpnIf.getName(), vpnName);
 166                                                     Set<String> prefixes = new HashSet<>();
 167                                                     vpnInterfaceManager.processVpnInterfaceUp(dpnId, vpnIf, primaryRd,
 168                                                             ifIndex, false, writeConfigTxn, writeOperTxn, writeInvTxn,
 169                                                             intrf, vpnName, prefixes);
 170                                                     mapOfRdAndPrefixesForRefreshFib.put(primaryRd, prefixes);
 171                                                 }
 172                                             }
 173
 174                                         }
 175                                     });
 176                                 futures.add(operFuture);
 177                                 operFuture.get(); //Synchronous submit of operTxn
 178                             });
 179                         Futures.addCallback(configFuture,
 180                                 new VpnInterfaceCallBackHandler(mapOfRdAndPrefixesForRefreshFib),
 181                                 MoreExecutors.directExecutor());
 182                         futures.add(configFuture);
 183                         //TODO: Allow immediateFailedFuture from writeCfgTxn to cancel writeInvTxn as well.
 184                         Futures.addCallback(configFuture, new PostVpnInterfaceThreadWorker(intrf.getName(), true,
 185                                 "Operational"), MoreExecutors.directExecutor());
 186                     }));
 187                     return futures;
 188                 });
 189             }
 190         } catch (Exception e) {
 191             LOG.error("Exception caught in Interface {} Operational State Up event", intrf.getName(), e);
 192         }
 193     }
 194
 195     @Override
 196     // TODO Clean up the exception handling
 197     @SuppressWarnings("checkstyle:IllegalCatch")
 198     public void remove(InstanceIdentifier<Interface> identifier, Interface intrf) {
 199         final String ifName = intrf.getName();
 200         Uint64 dpId = Uint64.ZERO;
 201         try {
 202             if (L2vlan.class.equals(intrf.getType())) {
 203                 LOG.info("VPN Interface remove event - intfName {} from InterfaceStateChangeListener",
 204                                 intrf.getName());
 205                 try {
 206                     dpId = InterfaceUtils.getDpIdFromInterface(intrf);
 207                 } catch (Exception e) {
 208                     LOG.error("Unable to retrieve dpnId from interface operational data store for interface"
 209                             + " {}. Fetching from vpn interface op data store. ", ifName, e);
 210                 }
 211                 final Uint64 inputDpId = dpId;
 212                 jobCoordinator.enqueueJob("VPNINTERFACE-" + ifName, () -> {
 213                     List<ListenableFuture<Void>> futures = new ArrayList<>(3);
 214                     ListenableFuture<Void> configFuture =
 215                         txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION,
 216                             writeConfigTxn -> futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL,
 217                                 writeOperTxn -> futures.add(
 218                                     txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, writeInvTxn -> {
 219                                         VpnInterface cfgVpnInterface =
 220                                             vpnUtil.getConfiguredVpnInterface(ifName);
 221                                         if (cfgVpnInterface == null) {
 222                                             LOG.debug("Interface {} is not a vpninterface, ignoring.", ifName);
 223                                             return;
 224                                         }
 225                                         for (VpnInstanceNames vpnInterfaceVpnInstance :
 226                                                 cfgVpnInterface.nonnullVpnInstanceNames()) {
 227                                             String vpnName = vpnInterfaceVpnInstance.getVpnName();
 228                                             Optional<VpnInterfaceOpDataEntry> optVpnInterface =
 229                                                 vpnUtil.getVpnInterfaceOpDataEntry(ifName, vpnName);
 230                                             if (!optVpnInterface.isPresent()) {
 231                                                 LOG.debug("Interface {} vpn {} is not a vpninterface, or deletion"
 232                                                     + " triggered by northbound agent. ignoring.", ifName, vpnName);
 233                                                 continue;
 234                                             }
 235                                             handleMipAdjRemoval(cfgVpnInterface, vpnName);
 236                                             final VpnInterfaceOpDataEntry vpnInterface = optVpnInterface.get();
 237                                             String gwMac = intrf.getPhysAddress() != null ? intrf.getPhysAddress()
 238                                                 .getValue() : vpnInterface.getGatewayMacAddress();
 239                                             Uint64 dpnId = inputDpId;
 240                                             if (dpnId == null || dpnId.equals(Uint64.ZERO)) {
 241                                                 dpnId = vpnInterface.getDpnId();
 242                                             }
 243                                             final int ifIndex = intrf.getIfIndex();
 244                                             LOG.info("VPN Interface remove event - intfName {} onto vpnName {}"
 245                                                 + " running oper-driver", vpnInterface.getName(), vpnName);
 246                                             vpnInterfaceManager.processVpnInterfaceDown(dpnId, ifName, ifIndex, gwMac,
 247                                                 vpnInterface, false, writeConfigTxn, writeOperTxn, writeInvTxn);
 248                                         }
 249                                     })))));
 250                     futures.add(configFuture);
 251                     Futures.addCallback(configFuture, new PostVpnInterfaceThreadWorker(intrf.getName(), false,
 252                             "Operational"), MoreExecutors.directExecutor());
 253                     return futures;
 254                 }, DJC_MAX_RETRIES);
 255             }
 256         } catch (Exception e) {
 257             LOG.error("Exception observed in handling deletion of VPN Interface {}. ", ifName, e);
 258         }
 259     }
 260
 261     // TODO Clean up the exception handling
 262     @SuppressWarnings("checkstyle:IllegalCatch")
 263     @Override
 264     public void update(InstanceIdentifier<Interface> identifier,
 265                     Interface original, Interface update) {
 266         final String ifName = update.getName();
 267         try {
 268             if (update.getIfIndex() == null) {
 269                 return;
 270             }
 271             if (L2vlan.class.equals(update.getType())) {
 272                 LOG.info("VPN Interface update event - intfName {} from InterfaceStateChangeListener",
 273                         update.getName());
 274                 jobCoordinator.enqueueJob("VPNINTERFACE-" + ifName, () -> {
 275                     List<ListenableFuture<Void>> futures = new ArrayList<>(3);
 276                     futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(OPERATIONAL, writeOperTxn -> {
 277                         //map of prefix and vpn name used, as entry in prefix-to-interface datastore
 278                         // is prerequisite for refresh Fib to avoid race condition leading to missing remote
 279                         // next hop in bucket actions on bgp-vpn delete
 280                         Map<String, Set<String>> mapOfRdAndPrefixesForRefreshFib = new HashMap<>();
 281                         ListenableFuture<Void> configTxFuture =
 282                                 txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION, writeConfigTxn ->
 283                                     futures.add(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 284                                         writeInvTxn -> {
 285                                             final VpnInterface vpnIf = vpnUtil.getConfiguredVpnInterface(ifName);
 286                                             if (vpnIf != null) {
 287                                                 final int ifIndex = update.getIfIndex();
 288                                                 Uint64 dpnId;
 289                                                 try {
 290                                                     dpnId = InterfaceUtils.getDpIdFromInterface(update);
 291                                                 } catch (Exception e) {
 292                                                     LOG.error("remove: Unable to retrieve dpnId for interface {}",
 293                                                         ifName, e);
 294                                                     return;
 295                                                 }
 296                                                 IntfTransitionState state = getTransitionState(
 297                                                         original.getOperStatus(), update.getOperStatus());
 298                                                 if (state.equals(IntfTransitionState.STATE_IGNORE)) {
 299                                                     LOG.info("InterfaceStateChangeListener: Interface {} state "
 300                                                          + "original {}" + "updated {} not handled", ifName,
 301                                                          original.getOperStatus(), update.getOperStatus());
 302                                                     return;
 303                                                 }
 304                                                 LOG.error("InterfaceStateChangeListener- Processing ifState {} "
 305                                                                 + "update event "
 306                                                                 + "with dpnId {} operstate {}",
 307                                                         ifName, dpnId, update.getOperStatus());
 308                                                 if (state.equals(IntfTransitionState.STATE_UP)
 309                                                         && vpnIf.getVpnInstanceNames() != null) {
 310                                                     for (VpnInstanceNames vpnInterfaceVpnInstance :
 311                                                             vpnIf.getVpnInstanceNames()) {
 312                                                         String vpnName = vpnInterfaceVpnInstance.getVpnName();
 313                                                         String primaryRd = vpnUtil.getPrimaryRd(vpnName);
 314                                                         Set<String> prefixes = new HashSet<>();
 315                                                         if (!vpnInterfaceManager.isVpnInstanceReady(vpnName)) {
 316                                                             LOG.error("VPN Interface update event - intfName {} "
 317                                                                 + "onto vpnName {} running oper-driven UP, "
 318                                                                 + "VpnInstance not ready, holding on",
 319                                                                 vpnIf.getName(), vpnName);
 320                                                         } else if (vpnUtil.isVpnPendingDelete(primaryRd)) {
 321                                                             LOG.error("update: Ignoring UP event for vpnInterface "
 322                                                                 + "{}, as vpnInstance {} with primaryRd {} is "
 323                                                                 + "already marked for deletion ",
 324                                                                 vpnIf.getName(), vpnName, primaryRd);
 325                                                         } else {
 326                                                             vpnInterfaceManager.processVpnInterfaceUp(dpnId, vpnIf,
 327                                                                 primaryRd, ifIndex, true, writeConfigTxn,
 328                                                                 writeOperTxn, writeInvTxn, update, vpnName, prefixes);
 329                                                             mapOfRdAndPrefixesForRefreshFib.put(primaryRd, prefixes);
 330                                                         }
 331                                                     }
 332                                                 } else if (state.equals(IntfTransitionState.STATE_DOWN)
 333                                                         && vpnIf.getVpnInstanceNames() != null) {
 334                                                     for (VpnInstanceNames vpnInterfaceVpnInstance :
 335                                                             vpnIf.getVpnInstanceNames()) {
 336                                                         String vpnName = vpnInterfaceVpnInstance.getVpnName();
 337                                                         LOG.info("VPN Interface update event - intfName {} "
 338                                                             + " onto vpnName {} running oper-driven DOWN",
 339                                                             vpnIf.getName(), vpnName);
 340                                                         Optional<VpnInterfaceOpDataEntry> optVpnInterface = vpnUtil
 341                                                             .getVpnInterfaceOpDataEntry(vpnIf.getName(), vpnName);
 342                                                         if (optVpnInterface.isPresent()) {
 343                                                             VpnInterfaceOpDataEntry vpnOpInterface =
 344                                                                 optVpnInterface.get();
 345                                                             handleMipAdjRemoval(vpnIf, vpnName);
 346                                                             vpnInterfaceManager.processVpnInterfaceDown(dpnId,
 347                                                                 vpnIf.getName(), ifIndex, update.getPhysAddress()
 348                                                                 .getValue(), vpnOpInterface, true,
 349                                                                 writeConfigTxn, writeOperTxn, writeInvTxn);
 350                                                         } else {
 351                                                             LOG.error("InterfaceStateChangeListener Update DOWN - "
 352                                                                 + " vpnInterface {}not available, ignoring event",
 353                                                                 vpnIf.getName());
 354                                                             continue;
 355                                                         }
 356                                                     }
 357                                                 }
 358                                             } else {
 359                                                 LOG.debug("Interface {} is not a vpninterface, ignoring.", ifName);
 360                                             }
 361                                         })));
 362                         Futures.addCallback(configTxFuture,
 363                             new VpnInterfaceCallBackHandler(mapOfRdAndPrefixesForRefreshFib),
 364                             MoreExecutors.directExecutor());
 365                         futures.add(configTxFuture);
 366                     }));
 367                     return futures;
 368                 });
 369             }
 370         } catch (Exception e) {
 371             LOG.error("Exception observed in handling updation of VPN Interface {}. ", update.getName(), e);
 372         }
 373     }
 374
 375     private void handleMipAdjRemoval(VpnInterface cfgVpnInterface, String vpnName) {
 376         String interfaceName = cfgVpnInterface.getName();
 377         Adjacencies adjacencies = cfgVpnInterface.augmentation(Adjacencies.class);
 378         if (adjacencies != null) {
 379             List<Adjacency> adjacencyList = adjacencies.getAdjacency();
 380             if (!adjacencyList.isEmpty()) {
 381                 for (Adjacency adj : adjacencyList) {
 382                     if (adj.getAdjacencyType() != Adjacency.AdjacencyType.PrimaryAdjacency) {
 383                         String ipAddress = adj.getIpAddress();
 384                         String prefix = ipAddress.split("/")[0];
 385                         LearntVpnVipToPort vpnVipToPort = vpnUtil.getLearntVpnVipToPort(vpnName, prefix);
 386                         if (vpnVipToPort != null && vpnVipToPort.getPortName().equals(interfaceName)) {
 387                             vpnUtil.removeMipAdjacency(vpnName, interfaceName, ipAddress, null);
 388                         } else {
 389                             LOG.debug("IP {} could be extra-route or learnt-ip on different interface"
 390                                     + "than oper-vpn-interface {}", ipAddress, interfaceName);
 391                         }
 392                     }
 393                 }
 394             }
 395         }
 396     }
 397
 398     private class PostVpnInterfaceThreadWorker implements FutureCallback<Void> {
 399         private final String interfaceName;
 400         private final boolean add;
 401         private final String txnDestination;
 402
 403         PostVpnInterfaceThreadWorker(String interfaceName, boolean add, String transactionDest) {
 404             this.interfaceName = interfaceName;
 405             this.add = add;
 406             this.txnDestination = transactionDest;
 407         }
 408
 409         @Override
 410         public void onSuccess(Void voidObj) {
 411             if (add) {
 412                 LOG.debug("InterfaceStateChangeListener: VrfEntries for {} stored into destination {} successfully",
 413                         interfaceName, txnDestination);
 414             } else {
 415                 LOG.debug("InterfaceStateChangeListener:  VrfEntries for {} removed successfully", interfaceName);
 416             }
 417         }
 418
 419         @Override
 420         public void onFailure(Throwable throwable) {
 421             if (add) {
 422                 LOG.error("InterfaceStateChangeListener: VrfEntries for {} failed to store into destination {}",
 423                         interfaceName, txnDestination, throwable);
 424             } else {
 425                 LOG.error("InterfaceStateChangeListener: VrfEntries for {} removal failed", interfaceName, throwable);
 426                 vpnUtil.unsetScheduledToRemoveForVpnInterface(interfaceName);
 427             }
 428         }
 429     }
 430
 431     private IntfTransitionState getTransitionState(Interface.OperStatus original , Interface.OperStatus updated) {
 432         IntfTransitionState transitionState = stateTable.get(original, updated);
 433
 434         if (transitionState == null) {
 435             return IntfTransitionState.STATE_IGNORE;
 436         }
 437         return transitionState;
 438     }
 439
 440     private class VpnInterfaceCallBackHandler implements FutureCallback<Void> {
 441         private final Map<String, Set<String>> mapOfRdAndPrefixesForRefreshFib;
 442
 443         VpnInterfaceCallBackHandler(Map<String, Set<String>> mapOfRdAndPrefixesForRefreshFib) {
 444             this.mapOfRdAndPrefixesForRefreshFib = mapOfRdAndPrefixesForRefreshFib;
 445         }
 446
 447         @Override
 448         public void onSuccess(Void voidObj) {
 449             mapOfRdAndPrefixesForRefreshFib.forEach((primaryRd, prefixes) -> {
 450                 prefixes.forEach(prefix -> {
 451                     fibManager.refreshVrfEntry(primaryRd, prefix);
 452                 });
 453             });
 454         }
 455
 456         @Override
 457         public void onFailure(Throwable throwable) {
 458             LOG.debug("write Tx config operation failedTunnelEndPointChangeListener", throwable);
 459         }
 460     }
 461 }