itm/itm-impl/src/main/java/org/opendaylight/genius/itm/listeners/TransportZoneListener.java

   1 /*
   2  * Copyright (c) 2016, 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
   9 package org.opendaylight.genius.itm.listeners;
  10
  11 import com.google.common.base.Optional;
  12 import com.google.common.util.concurrent.CheckedFuture;
  13 import java.math.BigInteger;
  14 import java.util.ArrayList;
  15 import java.util.Collections;
  16 import java.util.List;
  17 import java.util.Map;
  18 import java.util.Set;
  19 import java.util.concurrent.ConcurrentHashMap;
  20 import javax.annotation.PostConstruct;
  21 import javax.annotation.PreDestroy;
  22 import javax.inject.Inject;
  23 import javax.inject.Singleton;
  24 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  25 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  26 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  27 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  28 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  29 import org.opendaylight.genius.datastoreutils.DataStoreJobCoordinator;
  30 import org.opendaylight.genius.itm.confighelpers.HwVtep;
  31 import org.opendaylight.genius.itm.confighelpers.ItmTepAddWorker;
  32 import org.opendaylight.genius.itm.confighelpers.ItmTepRemoveWorker;
  33 import org.opendaylight.genius.itm.confighelpers.ItmTepsNotHostedMoveWorker;
  34 import org.opendaylight.genius.itm.confighelpers.ItmTepsNotHostedRemoveWorker;
  35 import org.opendaylight.genius.itm.globals.ITMConstants;
  36 import org.opendaylight.genius.itm.impl.ITMManager;
  37 import org.opendaylight.genius.itm.impl.ItmUtils;
  38 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeBase;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.config.rev160406.ItmConfig;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.DPNTEPsInfo;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.dpn.teps.info.TunnelEndPoints;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.dpn.endpoints.dpn.teps.info.tunnel.end.points.TzMembership;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.TransportZones;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.TransportZonesBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.TepsNotHostedInTransportZone;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.TepsNotHostedInTransportZoneKey;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.TransportZone;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.tepsnothostedintransportzone.UnknownVteps;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.transport.zone.Subnets;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.transport.zone.subnets.DeviceVteps;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.transport.zone.subnets.Vteps;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.transport.zone.subnets.VtepsBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rev160406.transport.zones.transport.zone.subnets.VtepsKey;
  58 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  59 import org.slf4j.Logger;
  60 import org.slf4j.LoggerFactory;
  61
  62 /**
  63  * This class listens for interface creation/removal/update in Configuration DS.
  64  * This is used to handle interfaces for base of-ports.
  65  */
  66 @Singleton
  67 public class TransportZoneListener extends AsyncDataTreeChangeListenerBase<TransportZone, TransportZoneListener>
  68         implements AutoCloseable {
  69     private static final Logger LOG = LoggerFactory.getLogger(TransportZoneListener.class);
  70     private final DataBroker dataBroker;
  71     private final IdManagerService idManagerService;
  72     private final IMdsalApiManager mdsalManager;
  73     private final ITMManager itmManager;
  74     private final ItmConfig itmConfig;
  75
  76     @Inject
  77     public TransportZoneListener(final DataBroker dataBroker, final IdManagerService idManagerService,
  78                                  final IMdsalApiManager mdsalManager,final ITMManager itmManager,
  79                                  final ItmConfig itmConfig) {
  80         super(TransportZone.class, TransportZoneListener.class);
  81         this.dataBroker = dataBroker;
  82         this.idManagerService = idManagerService;
  83         initializeTZNode(dataBroker);
  84         this.itmManager = itmManager;
  85         this.mdsalManager = mdsalManager;
  86         this.itmConfig = itmConfig;
  87     }
  88
  89     @PostConstruct
  90     public void start() {
  91         registerListener(LogicalDatastoreType.CONFIGURATION, this.dataBroker);
  92         LOG.info("tzChangeListener Started");
  93     }
  94
  95     @Override
  96     @PreDestroy
  97     public void close() {
  98         LOG.info("tzChangeListener Closed");
  99     }
 100
 101     @SuppressWarnings("checkstyle:IllegalCatch")
 102     private void initializeTZNode(DataBroker db) {
 103         ReadWriteTransaction transaction = db.newReadWriteTransaction();
 104         InstanceIdentifier<TransportZones> path = InstanceIdentifier.create(TransportZones.class);
 105         CheckedFuture<Optional<TransportZones>, ReadFailedException> tzones = transaction
 106                 .read(LogicalDatastoreType.CONFIGURATION, path);
 107         try {
 108             if (!tzones.get().isPresent()) {
 109                 TransportZonesBuilder tzb = new TransportZonesBuilder();
 110                 transaction.put(LogicalDatastoreType.CONFIGURATION, path, tzb.build());
 111                 transaction.submit();
 112             } else {
 113                 transaction.cancel();
 114             }
 115         } catch (Exception e) {
 116             LOG.error("Error initializing TransportZones {}", e);
 117         }
 118     }
 119
 120     @Override
 121     protected InstanceIdentifier<TransportZone> getWildCardPath() {
 122         return InstanceIdentifier.create(TransportZones.class).child(TransportZone.class);
 123     }
 124
 125     @Override
 126     protected TransportZoneListener getDataTreeChangeListener() {
 127         return TransportZoneListener.this;
 128     }
 129
 130     @Override
 131     protected void remove(InstanceIdentifier<TransportZone> key, TransportZone tzOld) {
 132         LOG.debug("Received Transport Zone Remove Event: {}, {}", key, tzOld);
 133
 134         boolean allowTunnelDeletion = false;
 135
 136         // check if TZ received for removal is default-transport-zone,
 137         // if yes, then check if it is received from northbound, then
 138         // do not entertain request and skip tunnels remove operation
 139         // if def-tz removal request is due to def-tz-enabled flag is disabled or
 140         // due to change in def-tz-tunnel-type, then allow def-tz tunnels deletion
 141         if (tzOld.getZoneName().equalsIgnoreCase(ITMConstants.DEFAULT_TRANSPORT_ZONE)) {
 142             // Get TunnelTypeBase object for tunnel-type configured in config file
 143             Class<? extends TunnelTypeBase> tunType = ItmUtils.getTunnelType(itmConfig.getDefTzTunnelType());
 144
 145             if ((!itmConfig.isDefTzEnabled()) || (!tzOld.getTunnelType().equals(tunType))) {
 146                 allowTunnelDeletion = true;
 147             } else {
 148                 // this is case when def-tz removal request is from Northbound.
 149                 allowTunnelDeletion = false;
 150                 LOG.error("Deletion of {} is an incorrect usage",ITMConstants.DEFAULT_TRANSPORT_ZONE);
 151             }
 152         } else {
 153             allowTunnelDeletion = true;
 154         }
 155
 156         if (allowTunnelDeletion) {
 157             //TODO : DPList code can be refactor with new specific class
 158             // which implement TransportZoneValidator
 159             List<DPNTEPsInfo> opDpnList = createDPNTepInfo(tzOld);
 160             List<HwVtep> hwVtepList = createhWVteps(tzOld);
 161             LOG.trace("Delete: Invoking deleteTunnels in ItmManager with DpnList {}", opDpnList);
 162             if (!opDpnList.isEmpty() || !hwVtepList.isEmpty()) {
 163                 LOG.trace("Delete: Invoking ItmManager with hwVtep List {} " , hwVtepList);
 164                 DataStoreJobCoordinator coordinator = DataStoreJobCoordinator.getInstance();
 165                 ItmTepRemoveWorker removeWorker =
 166                         new ItmTepRemoveWorker(opDpnList, hwVtepList, tzOld, dataBroker,
 167                                 idManagerService, mdsalManager);
 168                 coordinator.enqueueJob(tzOld.getZoneName(), removeWorker);
 169             }
 170         }
 171     }
 172
 173     @Override
 174     protected void update(InstanceIdentifier<TransportZone> key, TransportZone tzOld, TransportZone tzNew) {
 175         LOG.debug("Received Transport Zone Update Event: Key - {}, Old - {}, Updated - {}", key, tzOld, tzNew);
 176         List<DPNTEPsInfo> oldDpnTepsList = createDPNTepInfo(tzOld);
 177         List<DPNTEPsInfo> newDpnTepsList = createDPNTepInfo(tzNew);
 178         List<DPNTEPsInfo> oldDpnTepsListcopy = new ArrayList<>();
 179         oldDpnTepsListcopy.addAll(oldDpnTepsList);
 180         LOG.trace("oldcopy0" + oldDpnTepsListcopy);
 181         List<DPNTEPsInfo> newDpnTepsListcopy = new ArrayList<>();
 182         newDpnTepsListcopy.addAll(newDpnTepsList);
 183         LOG.trace("newcopy0" + newDpnTepsListcopy);
 184         DataStoreJobCoordinator coordinator = DataStoreJobCoordinator.getInstance();
 185
 186         oldDpnTepsList.removeAll(newDpnTepsListcopy);
 187         newDpnTepsList.removeAll(oldDpnTepsListcopy);
 188
 189         LOG.trace("oldDpnTepsList" + oldDpnTepsList);
 190         LOG.trace("newDpnTepsList" + newDpnTepsList);
 191         LOG.trace("oldcopy" + oldDpnTepsListcopy);
 192         LOG.trace("newcopy" + newDpnTepsListcopy);
 193         LOG.trace("oldcopy Size " + oldDpnTepsList.size());
 194         LOG.trace("newcopy Size " + newDpnTepsList.size());
 195         if (!newDpnTepsList.isEmpty()) {
 196             LOG.trace("Adding TEPs ");
 197             ItmTepAddWorker addWorker = new ItmTepAddWorker(newDpnTepsList, Collections.emptyList(), dataBroker,
 198                     idManagerService, mdsalManager);
 199             coordinator.enqueueJob(tzNew.getZoneName(), addWorker);
 200         }
 201         if (!oldDpnTepsList.isEmpty()) {
 202             LOG.trace("Removing TEPs ");
 203             ItmTepRemoveWorker removeWorker = new ItmTepRemoveWorker(oldDpnTepsList, Collections.emptyList(),
 204                     tzOld, dataBroker, idManagerService, mdsalManager);
 205             coordinator.enqueueJob(tzNew.getZoneName(), removeWorker);
 206         }
 207         List<HwVtep> oldHwList = createhWVteps(tzOld);
 208         List<HwVtep> newHwList = createhWVteps(tzNew);
 209         List<HwVtep> oldHwListcopy = new ArrayList<>();
 210         oldHwListcopy.addAll(oldHwList);
 211         LOG.trace("oldHwListcopy0" + oldHwListcopy);
 212         List<HwVtep> newHwListcopy = new ArrayList<>();
 213         newHwListcopy.addAll(newHwList);
 214         LOG.trace("newHwListcopy0" + newHwListcopy);
 215
 216         oldHwList.removeAll(newHwListcopy);
 217         newHwList.removeAll(oldHwListcopy);
 218         LOG.trace("oldHwList" + oldHwList);
 219         LOG.trace("newHwList" + newHwList);
 220         LOG.trace("oldHwListcopy" + oldHwListcopy);
 221         LOG.trace("newHwListcopy" + newHwListcopy);
 222         if (!newHwList.isEmpty()) {
 223             LOG.trace("Adding HW TEPs ");
 224             ItmTepAddWorker addWorker = new ItmTepAddWorker(Collections.emptyList(), newHwList, dataBroker,
 225                     idManagerService, mdsalManager);
 226             coordinator.enqueueJob(tzNew.getZoneName(), addWorker);
 227         }
 228         if (!oldHwList.isEmpty()) {
 229             LOG.trace("Removing HW TEPs ");
 230             ItmTepRemoveWorker removeWorker = new ItmTepRemoveWorker(Collections.emptyList(), oldHwList,
 231                     tzOld, dataBroker, idManagerService, mdsalManager);
 232             coordinator.enqueueJob(tzNew.getZoneName(), removeWorker);
 233         }
 234     }
 235
 236     @Override
 237     protected void add(InstanceIdentifier<TransportZone> key, TransportZone tzNew) {
 238         LOG.debug("Received Transport Zone Add Event: {}, {}", key, tzNew);
 239         List<DPNTEPsInfo> opDpnList = createDPNTepInfo(tzNew);
 240         List<HwVtep> hwVtepList = createhWVteps(tzNew);
 241         opDpnList.addAll(getDPNTepInfoFromNotHosted(tzNew));
 242         LOG.trace("Add: Operational dpnTepInfo - Before invoking ItmManager {}", opDpnList);
 243         if (!opDpnList.isEmpty() || !hwVtepList.isEmpty()) {
 244             LOG.trace("Add: Invoking ItmManager with DPN List {} ", opDpnList);
 245             LOG.trace("Add: Invoking ItmManager with hwVtep List {} ", hwVtepList);
 246             DataStoreJobCoordinator coordinator = DataStoreJobCoordinator.getInstance();
 247             ItmTepAddWorker addWorker = new ItmTepAddWorker(opDpnList, hwVtepList, dataBroker, idManagerService,
 248                     mdsalManager);
 249             coordinator.enqueueJob(tzNew.getZoneName(), addWorker);
 250         }
 251     }
 252
 253     private List<DPNTEPsInfo> getDPNTepInfoFromNotHosted(TransportZone tzNew) {
 254         List<DPNTEPsInfo> notHostedOpDpnList = new ArrayList<>();
 255         if (isNewTZExistInNotHostedTZ(tzNew)) {
 256             notHostedOpDpnList = createDPNTepInfoFromNotHosted(tzNew);
 257         }
 258         return notHostedOpDpnList;
 259     }
 260
 261     private List<DPNTEPsInfo> createDPNTepInfoFromNotHosted(TransportZone tzNew) {
 262         Map<BigInteger, List<TunnelEndPoints>> mapNotHostedDPNToTunnelEndpt = new ConcurrentHashMap<>();
 263         List<DPNTEPsInfo> notHostedDpnTepInfo = new ArrayList<>();
 264         String newZoneName = tzNew.getZoneName();
 265         List<TzMembership> zones = ItmUtils.createTransportZoneMembership(newZoneName);
 266         Class<? extends TunnelTypeBase> tunnelType  = tzNew.getTunnelType();
 267         DataStoreJobCoordinator coordinator = DataStoreJobCoordinator.getInstance();
 268
 269         TepsNotHostedInTransportZone tepNotHostedTransportZone = getNotHostedTransportZone(newZoneName).get();
 270         if (tepNotHostedTransportZone == null) {
 271             return notHostedDpnTepInfo;
 272         }
 273         List<UnknownVteps> unVtepsLst = tepNotHostedTransportZone.getUnknownVteps();
 274         List<Vteps> vtepsList = new ArrayList<Vteps>();
 275         if (unVtepsLst != null && !unVtepsLst.isEmpty()) {
 276             for (UnknownVteps vteps : unVtepsLst) {
 277                 BigInteger dpnID = vteps.getDpnId();
 278                 String port = ITMConstants.DUMMY_PORT;
 279                 int vlanID = ITMConstants.DUMMY_VLANID;
 280                 IpPrefix ipPrefix = new IpPrefix(ITMConstants.DUMMY_PREFIX.toCharArray());
 281                 IpAddress gatewayIP = new IpAddress(ITMConstants.DUMMY_GATEWAY_IP.toCharArray());
 282                 IpAddress ipAddress = vteps.getIpAddress();
 283                 boolean useOfTunnel = ItmUtils.falseIfNull(vteps.isOfTunnel());
 284                 TunnelEndPoints tunnelEndPoints =
 285                         ItmUtils.createTunnelEndPoints(dpnID, ipAddress, port, useOfTunnel,vlanID, ipPrefix,
 286                                 gatewayIP, zones, tunnelType);
 287                 List<TunnelEndPoints> tunnelEndPointsList = mapNotHostedDPNToTunnelEndpt.get(dpnID);
 288                 if (tunnelEndPointsList != null) {
 289                     tunnelEndPointsList.add(tunnelEndPoints);
 290                 } else {
 291                     tunnelEndPointsList = new ArrayList<>();
 292                     tunnelEndPointsList.add(tunnelEndPoints);
 293                     mapNotHostedDPNToTunnelEndpt.put(dpnID, tunnelEndPointsList);
 294                 }
 295                 Vteps newVtep = createVtepFromUnKnownVteps(dpnID,ipAddress,ITMConstants.DUMMY_PORT);
 296                 vtepsList.add(newVtep);
 297
 298                 // Enqueue 'remove TEP from TepsNotHosted list' operation
 299                 // into DataStoreJobCoordinator
 300                 ItmTepsNotHostedRemoveWorker
 301                     removeWorker = new ItmTepsNotHostedRemoveWorker(newZoneName, ipAddress, dpnID, dataBroker);
 302                 coordinator.enqueueJob(newZoneName, removeWorker);
 303             }
 304         }
 305
 306         // Enqueue 'add TEP received from southbound OVSDB into ITM config DS' operation
 307         // into DataStoreJobCoordinator
 308         ItmTepsNotHostedMoveWorker
 309             moveWorker = new ItmTepsNotHostedMoveWorker(vtepsList, newZoneName, dataBroker);
 310         coordinator.enqueueJob(newZoneName, moveWorker);
 311
 312         if (mapNotHostedDPNToTunnelEndpt.size() > 0) {
 313             Set<BigInteger> keys = mapNotHostedDPNToTunnelEndpt.keySet();
 314             for (BigInteger key: keys) {
 315                 DPNTEPsInfo newDpnTepsInfo = ItmUtils.createDPNTepInfo(key, mapNotHostedDPNToTunnelEndpt.get(key));
 316                 notHostedDpnTepInfo.add(newDpnTepsInfo);
 317             }
 318         }
 319         return notHostedDpnTepInfo;
 320
 321     }
 322
 323     private Vteps createVtepFromUnKnownVteps(BigInteger dpnID, IpAddress ipAddress, String port) {
 324         VtepsKey vtepkey = new VtepsKey(dpnID, port);
 325         Vteps vtepObj = new VtepsBuilder().setDpnId(dpnID).setIpAddress(ipAddress).setKey(vtepkey)
 326                 .setPortname(port).build();
 327         return vtepObj;
 328     }
 329
 330     private boolean isNewTZExistInNotHostedTZ(TransportZone tzNew) {
 331         boolean isPresent = false;
 332         if (getNotHostedTransportZone(tzNew.getZoneName()).isPresent()) {
 333             isPresent = true;
 334         }
 335         return isPresent;
 336     }
 337
 338     public  Optional<TepsNotHostedInTransportZone> getNotHostedTransportZone(String transportZoneName) {
 339         InstanceIdentifier<TepsNotHostedInTransportZone> tzonePath = InstanceIdentifier.builder(TransportZones.class)
 340                 .child(TepsNotHostedInTransportZone.class,
 341                         new TepsNotHostedInTransportZoneKey(transportZoneName)).build();
 342         Optional<TepsNotHostedInTransportZone> tzNotHostedOptional =
 343                 ItmUtils.read(LogicalDatastoreType.CONFIGURATION, tzonePath, dataBroker);
 344         return tzNotHostedOptional;
 345     }
 346
 347     private List<DPNTEPsInfo> createDPNTepInfo(TransportZone transportZone) {
 348
 349         Map<BigInteger, List<TunnelEndPoints>> mapDPNToTunnelEndpt = new ConcurrentHashMap<>();
 350         List<DPNTEPsInfo> dpnTepInfo = new ArrayList<>();
 351         List<TzMembership> zones = ItmUtils.createTransportZoneMembership(transportZone.getZoneName());
 352         Class<? extends TunnelTypeBase> tunnelType = transportZone.getTunnelType();
 353         LOG.trace("Transport Zone_name: {}", transportZone.getZoneName());
 354         List<Subnets> subnetsList = transportZone.getSubnets();
 355         if (subnetsList != null) {
 356             for (Subnets subnet : subnetsList) {
 357                 IpPrefix ipPrefix = subnet.getPrefix();
 358                 IpAddress gatewayIP = subnet.getGatewayIp();
 359                 int vlanID = subnet.getVlanId();
 360                 LOG.trace("IpPrefix: {}, gatewayIP: {}, vlanID: {} ", ipPrefix, gatewayIP, vlanID);
 361                 List<Vteps> vtepsList = subnet.getVteps();
 362                 if (vtepsList != null && !vtepsList.isEmpty()) {
 363                     for (Vteps vteps : vtepsList) {
 364                         BigInteger dpnID = vteps.getDpnId();
 365                         String port = vteps.getPortname();
 366                         IpAddress ipAddress = vteps.getIpAddress();
 367                         boolean useOfTunnel = ItmUtils.falseIfNull(vteps.isOptionOfTunnel());
 368                         LOG.trace("DpnID: {}, port: {}, ipAddress: {}", dpnID, port, ipAddress);
 369                         TunnelEndPoints tunnelEndPoints = ItmUtils.createTunnelEndPoints(dpnID, ipAddress, port,
 370                             useOfTunnel, vlanID,  ipPrefix, gatewayIP, zones, tunnelType);
 371                         List<TunnelEndPoints> tunnelEndPointsList = mapDPNToTunnelEndpt.get(dpnID);
 372                         if (tunnelEndPointsList != null) {
 373                             LOG.trace("Existing DPN info list in the Map: {} ", dpnID);
 374                             tunnelEndPointsList.add(tunnelEndPoints);
 375                         } else {
 376                             LOG.trace("Adding new DPN info list to the Map: {} ", dpnID);
 377                             tunnelEndPointsList = new ArrayList<>();
 378                             tunnelEndPointsList.add(tunnelEndPoints);
 379                             mapDPNToTunnelEndpt.put(dpnID, tunnelEndPointsList);
 380                         }
 381                     }
 382                 }
 383             }
 384         }
 385
 386         if (!mapDPNToTunnelEndpt.isEmpty()) {
 387             Set<BigInteger> keys = mapDPNToTunnelEndpt.keySet();
 388             LOG.trace("List of dpns in the Map: {} ", keys);
 389             for (BigInteger key : keys) {
 390                 DPNTEPsInfo newDpnTepsInfo = ItmUtils.createDPNTepInfo(key, mapDPNToTunnelEndpt.get(key));
 391                 dpnTepInfo.add(newDpnTepsInfo);
 392             }
 393         }
 394         return dpnTepInfo;
 395     }
 396
 397     private List<HwVtep> createhWVteps(TransportZone transportZone) {
 398         List<HwVtep> hwVtepsList = new ArrayList<>();
 399
 400         String zoneName = transportZone.getZoneName();
 401         Class<? extends TunnelTypeBase> tunnelType = transportZone.getTunnelType();
 402         LOG.trace("Transport Zone_name: {}", zoneName);
 403         List<Subnets> subnetsList = transportZone.getSubnets();
 404         if (subnetsList != null) {
 405             for (Subnets subnet : subnetsList) {
 406                 IpPrefix ipPrefix = subnet.getPrefix();
 407                 IpAddress gatewayIP = subnet.getGatewayIp();
 408                 int vlanID = subnet.getVlanId();
 409                 LOG.trace("IpPrefix: {}, gatewayIP: {}, vlanID: {} ", ipPrefix, gatewayIP, vlanID);
 410                 List<DeviceVteps> deviceVtepsList = subnet.getDeviceVteps();
 411                 if (deviceVtepsList != null) {
 412                     for (DeviceVteps vteps : deviceVtepsList) {
 413                         String topologyId = vteps.getTopologyId();
 414                         String nodeId = vteps.getNodeId();
 415                         IpAddress ipAddress = vteps.getIpAddress();
 416                         LOG.trace("topo-id: {}, node-id: {}, ipAddress: {}", topologyId, nodeId, ipAddress);
 417                         HwVtep hwVtep = ItmUtils.createHwVtepObject(topologyId, nodeId, ipAddress, ipPrefix, gatewayIP,
 418                                 vlanID, tunnelType, transportZone);
 419
 420                         if (hwVtepsList != null) {
 421                             LOG.trace("Existing hwVteps");
 422                             hwVtepsList.add(hwVtep);
 423                         } else {
 424                             LOG.trace("Adding new HwVtep {} info ", hwVtep.getHwIp());
 425                             hwVtepsList.add(hwVtep);
 426                         }
 427                     }
 428                 }
 429             }
 430         }
 431         LOG.trace("returning hwvteplist {}", hwVtepsList);
 432         return hwVtepsList;
 433     }
 434 }