itm/itm-impl/src/main/java/org/opendaylight/vpnservice/itm/confighelpers/ItmExternalTunnelAddWorker.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.itm.confighelpers;
   9
  10 import java.math.BigInteger;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13
  14 import com.google.common.base.Optional;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.vpnservice.itm.globals.ITMConstants;
  19 import org.opendaylight.vpnservice.itm.impl.ItmUtils;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.idmanager.rev150403.IdManagerService;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.TunnelTypeBase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.TunnelTypeGre;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.TunnelTypeVxlan;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.ExternalTunnelList;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.TunnelList;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.DPNTEPsInfo;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.dpn.endpoints.dpn.teps.info.TunnelEndPoints;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.external.tunnel.list.ExternalTunnel;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.external.tunnel.list.ExternalTunnelBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.external.tunnel.list.ExternalTunnelKey;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.tunnel.list.InternalTunnel;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.op.rev150701.tunnel.list.InternalTunnelKey;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rev150701.TransportZones;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rev150701.transport.zones.TransportZone;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rev150701.transport.zones.TransportZoneKey;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rev150701.transport.zones.transport.zone.Subnets;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rev150701.transport.zones.transport.zone.subnets.DeviceVteps;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.itm.rev150701.transport.zones.transport.zone.subnets.Vteps;
  44 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  45 import org.opendaylight.yangtools.yang.binding.*;
  46 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49 import org.apache.commons.net.util.SubnetUtils;
  50
  51 import com.google.common.util.concurrent.FutureCallback;
  52 import com.google.common.util.concurrent.ListenableFuture;
  53
  54 public class ItmExternalTunnelAddWorker {
  55     private static final Logger logger = LoggerFactory.getLogger(ItmExternalTunnelAddWorker.class);
  56
  57     private static final FutureCallback<Void> DEFAULT_CALLBACK =
  58             new FutureCallback<Void>() {
  59                 public void onSuccess(Void result) {
  60                     logger.debug("Success in Datastore operation");
  61                 }
  62
  63                 public void onFailure(Throwable error) {
  64                     logger.error("Error in Datastore operation", error);
  65                 }
  66
  67                 ;
  68             };
  69
  70     public static List<ListenableFuture<Void>> buildTunnelsToExternalEndPoint(DataBroker dataBroker, IdManagerService idManagerService,
  71                                                                               List<DPNTEPsInfo> cfgDpnList, IpAddress extIp, Class<? extends TunnelTypeBase> tunType) {
  72         List<ListenableFuture<Void>> futures = new ArrayList<>();
  73         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
  74         if (null != cfgDpnList) {
  75             for (DPNTEPsInfo teps : cfgDpnList) {
  76                 // CHECK -- Assumption -- Only one End Point / Dpn for GRE/Vxlan Tunnels
  77                 TunnelEndPoints firstEndPt = teps.getTunnelEndPoints().get(0);
  78                 String interfaceName = firstEndPt.getInterfaceName();
  79                 String tunTypeStr = tunType.getName();
  80                 String trunkInterfaceName = ItmUtils.getTrunkInterfaceName(idManagerService, interfaceName, firstEndPt.getIpAddress().getIpv4Address().getValue(), extIp.getIpv4Address().getValue(), tunTypeStr);
  81                 char[] subnetMaskArray = firstEndPt.getSubnetMask().getValue();
  82                 String subnetMaskStr = String.valueOf(subnetMaskArray);
  83                 SubnetUtils utils = new SubnetUtils(subnetMaskStr);
  84                 String dcGwyIpStr = String.valueOf(extIp.getValue());
  85                 IpAddress gatewayIpObj = new IpAddress("0.0.0.0".toCharArray());
  86                 IpAddress gwyIpAddress = (utils.getInfo().isInRange(dcGwyIpStr)) ? gatewayIpObj : firstEndPt.getGwIpAddress();
  87                 logger.debug(" Creating Trunk Interface with parameters trunk I/f Name - {}, parent I/f name - {}, source IP - {}, DC Gateway IP - {} gateway IP - {}", trunkInterfaceName, interfaceName, firstEndPt.getIpAddress(), extIp, gwyIpAddress);
  88                 Interface iface = ItmUtils.buildTunnelInterface(teps.getDPNID(), trunkInterfaceName, String.format("%s %s", ItmUtils.convertTunnelTypetoString(tunType), "Trunk Interface"), true, tunType, firstEndPt.getIpAddress(), extIp, gwyIpAddress, firstEndPt.getVLANID(), false,false,null);
  89                 logger.debug(" Trunk Interface builder - {} ", iface);
  90                 InstanceIdentifier<Interface> trunkIdentifier = ItmUtils.buildId(trunkInterfaceName);
  91                 logger.debug(" Trunk Interface Identifier - {} ", trunkIdentifier);
  92                 logger.trace(" Writing Trunk Interface to Config DS {}, {} ", trunkIdentifier, iface);
  93                 t.merge(LogicalDatastoreType.CONFIGURATION, trunkIdentifier, iface, true);
  94                 // update external_tunnel_list ds
  95                 InstanceIdentifier<ExternalTunnel> path = InstanceIdentifier.create(
  96                         ExternalTunnelList.class)
  97                         .child(ExternalTunnel.class, new ExternalTunnelKey(extIp.toString(), teps.getDPNID().toString(), tunType));
  98                 ExternalTunnel tnl = ItmUtils.buildExternalTunnel(  teps.getDPNID().toString(), extIp.toString(),
  99                                                                     tunType, trunkInterfaceName);
 100                 t.merge(LogicalDatastoreType.CONFIGURATION, path, tnl, true);
 101             }
 102             futures.add(t.submit());
 103         }
 104         return futures;
 105     }
 106
 107     public static List<ListenableFuture<Void>> buildTunnelsFromDpnToExternalEndPoint(DataBroker dataBroker, IdManagerService idManagerService,
 108                                                                                      List<BigInteger> dpnId, IpAddress extIp, Class<? extends TunnelTypeBase> tunType) {
 109         List<ListenableFuture<Void>> futures = new ArrayList<>();
 110         List<DPNTEPsInfo> cfgDpnList = (dpnId == null) ? ItmUtils.getTunnelMeshInfo(dataBroker) : ItmUtils.getDPNTEPListFromDPNId(dataBroker, dpnId);
 111         futures = buildTunnelsToExternalEndPoint(dataBroker, idManagerService, cfgDpnList, extIp, tunType);
 112         return futures;
 113     }
 114
 115     public static List<ListenableFuture<Void>> buildHwVtepsTunnels(DataBroker dataBroker, IdManagerService idManagerService, List<DPNTEPsInfo> cfgdDpnList, List<HwVtep> cfgdHwVteps) {
 116         List<ListenableFuture<Void>> futures = new ArrayList<>();
 117         WriteTransaction t = dataBroker.newWriteOnlyTransaction();
 118         if (null != cfgdDpnList && !cfgdDpnList.isEmpty()) {
 119             logger.trace("calling tunnels from css {}",cfgdDpnList);
 120             tunnelsFromCSS(cfgdDpnList, idManagerService , futures, t , dataBroker);
 121
 122         }
 123         if (null != cfgdHwVteps && !cfgdHwVteps.isEmpty() ) {
 124             logger.trace("calling tunnels from hwTep {}",cfgdHwVteps);
 125             tunnelsFromhWVtep(cfgdHwVteps, idManagerService, futures, t, dataBroker);
 126         }
 127
 128         if ((cfgdDpnList != null && !cfgdDpnList.isEmpty()) || (cfgdHwVteps != null && !cfgdHwVteps.isEmpty()))
 129             futures.add(t.submit());
 130         return futures;
 131     }
 132
 133     private static void tunnelsFromCSS(List<DPNTEPsInfo> cfgdDpnList, IdManagerService idManagerService, List<ListenableFuture<Void>> futures, WriteTransaction t, DataBroker dataBroker) {
 134         for (DPNTEPsInfo dpn : cfgdDpnList) {
 135             logger.trace("processing dpn {}" , dpn);
 136             if (dpn.getTunnelEndPoints() != null && !dpn.getTunnelEndPoints().isEmpty())
 137                 for (TunnelEndPoints tep : dpn.getTunnelEndPoints()) {
 138                     InstanceIdentifier<TransportZone> tzonePath = InstanceIdentifier.builder(TransportZones.class).child(TransportZone.class, new TransportZoneKey((tep.getTransportZone()))).build();
 139                     Optional<TransportZone> tZoneOptional = ItmUtils.read(LogicalDatastoreType.CONFIGURATION, tzonePath, dataBroker);
 140                     if (tZoneOptional.isPresent()) {
 141                         TransportZone tZone = tZoneOptional.get();
 142                         //do we need to check tunnel type?
 143                         if (tZone.getSubnets() != null && !tZone.getSubnets().isEmpty()) {
 144                             for (Subnets sub : tZone.getSubnets()) {
 145                                 if (sub.getDeviceVteps() != null && !sub.getDeviceVteps().isEmpty()) {
 146                                     for (DeviceVteps hwVtepDS : sub.getDeviceVteps()) {
 147                                         String cssID = dpn.getDPNID().toString();
 148                                         String nodeId = hwVtepDS.getNodeId();
 149                                         //CSS-TOR
 150                                         Boolean monitorEnabled = ItmUtils.readMonitoringStateFromDS(dataBroker);
 151                                         Integer monitorInterval = ItmUtils.readMonitorIntervalfromDS(dataBroker);
 152                                         logger.trace("wire up {} and {}",tep, hwVtepDS);
 153                                         if (!wireUp(dpn.getDPNID(), tep.getPortname(), sub.getVlanId(), tep.getIpAddress(), nodeId, hwVtepDS.getIpAddress(), tep.getSubnetMask(),
 154                                                 sub.getGatewayIp(), sub.getPrefix(), tZone.getTunnelType(),monitorEnabled,ITMConstants.BFD_DEFAULT_MONITOR_INTERVAL, idManagerService, dataBroker, futures, t))
 155                                             logger.error("Unable to build tunnel {} -- {}", tep.getIpAddress(), hwVtepDS.getIpAddress());
 156                                         //TOR-CSS
 157                                         logger.trace("wire up {} and {}", hwVtepDS,tep);
 158                                         if (!wireUp(hwVtepDS.getTopologyId(), hwVtepDS.getNodeId(), hwVtepDS.getIpAddress(), cssID, tep.getIpAddress(), sub.getPrefix(),
 159                                                 sub.getGatewayIp(), tep.getSubnetMask(), tZone.getTunnelType(), monitorEnabled,ITMConstants.BFD_DEFAULT_MONITOR_INTERVAL, idManagerService, dataBroker, futures, t))
 160                                             logger.error("Unable to build tunnel {} -- {}", hwVtepDS.getIpAddress(), tep.getIpAddress());
 161
 162                                     }
 163                                 }
 164                             }
 165                         }
 166                     }
 167                 }
 168         }
 169     }
 170
 171     private static void tunnelsFromhWVtep(List<HwVtep> cfgdHwVteps, IdManagerService idManagerService, List<ListenableFuture<Void>> futures, WriteTransaction t, DataBroker dataBroker) {
 172         for (HwVtep hwTep : cfgdHwVteps) {
 173             InstanceIdentifier<TransportZone> tzonePath = InstanceIdentifier.builder(TransportZones.class).child(TransportZone.class, new TransportZoneKey((hwTep.getTransportZone()))).build();
 174             Optional<TransportZone> tZoneOptional = ItmUtils.read(LogicalDatastoreType.CONFIGURATION, tzonePath, dataBroker);
 175             Class<? extends TunnelTypeBase> tunType = TunnelTypeVxlan.class;
 176             if (tZoneOptional.isPresent()) {
 177                 TransportZone tZone = tZoneOptional.get();
 178                 //do we need to check tunnel type?
 179                 if (tZone.getSubnets() != null && !tZone.getSubnets().isEmpty()) {
 180                     for (Subnets sub : tZone.getSubnets()) {
 181                         if (sub.getDeviceVteps() != null && !sub.getDeviceVteps().isEmpty()) {
 182                             for (DeviceVteps hwVtepDS : sub.getDeviceVteps()) {
 183                                 if (hwVtepDS.getIpAddress().equals(hwTep.getHwIp()))
 184                                     continue;//dont mesh with self
 185                                 //TOR1-TOR2
 186                                 Boolean monitorEnabled = ItmUtils.readMonitoringStateFromDS(dataBroker);
 187                                 Integer monitorInterval = ItmUtils.readMonitorIntervalfromDS(dataBroker);
 188                                 logger.trace("wire up {} and {}",hwTep, hwVtepDS);
 189                                 if (!wireUp(hwTep.getTopo_id(), hwTep.getNode_id(), hwTep.getHwIp(), hwVtepDS.getNodeId(), hwVtepDS.getIpAddress(),
 190                                         hwTep.getIpPrefix(), hwTep.getGatewayIP(), sub.getPrefix(), tunType,monitorEnabled,
 191                                                 ITMConstants.BFD_DEFAULT_MONITOR_INTERVAL, idManagerService, dataBroker, futures, t))
 192                                     logger.error("Unable to build tunnel {} -- {}", hwTep.getHwIp(), hwVtepDS.getIpAddress());
 193                                 //TOR2-TOR1
 194                                 logger.trace("wire up {} and {}", hwVtepDS,hwTep);
 195                                 if (!wireUp(hwTep.getTopo_id(), hwVtepDS.getNodeId(), hwVtepDS.getIpAddress(), hwTep.getNode_id(), hwTep.getHwIp(),
 196                                         sub.getPrefix(), sub.getGatewayIp(), hwTep.getIpPrefix(), tunType, monitorEnabled,ITMConstants.BFD_DEFAULT_MONITOR_INTERVAL, idManagerService, dataBroker, futures, t))
 197                                     logger.error("Unable to build tunnel {} -- {}", hwVtepDS.getIpAddress(), hwTep.getHwIp());
 198                             }
 199                         }
 200                         if (sub.getVteps() != null && !sub.getVteps().isEmpty()) {
 201                             for (Vteps vtep : sub.getVteps()) {
 202                                 //TOR-CSS
 203                                 String cssID = vtep.getDpnId().toString();
 204                                 Boolean monitorEnabled = ItmUtils.readMonitoringStateFromDS(dataBroker);
 205                                 Integer monitorInterval = ItmUtils.readMonitorIntervalfromDS(dataBroker);
 206                                 logger.trace("wire up {} and {}",hwTep, vtep);
 207                                 if(!wireUp(hwTep.getTopo_id(), hwTep.getNode_id(), hwTep.getHwIp(), cssID, vtep.getIpAddress(), hwTep.getIpPrefix(),
 208                                         hwTep.getGatewayIP(), sub.getPrefix(), tunType,monitorEnabled, ITMConstants.BFD_DEFAULT_MONITOR_INTERVAL, idManagerService, dataBroker, futures, t ))
 209                                     logger.error("Unable to build tunnel {} -- {}", hwTep.getHwIp(), vtep.getIpAddress());
 210                                     //CSS-TOR
 211                                 logger.trace("wire up {} and {}", vtep,hwTep);
 212                                 if(!wireUp(vtep.getDpnId(), vtep.getPortname(), sub.getVlanId(), vtep.getIpAddress(),
 213                                                 hwTep.getNode_id(),hwTep.getHwIp(),sub.getPrefix(), sub.getGatewayIp(),hwTep.getIpPrefix(),
 214                                                 tunType,monitorEnabled,ITMConstants.BFD_DEFAULT_MONITOR_INTERVAL,idManagerService, dataBroker, futures, t ));
 215
 216                             }
 217
 218                         }
 219                     }
 220                 }
 221             }
 222         }
 223     }
 224
 225     //for tunnels from TOR device
 226     private static boolean wireUp(String topo_id, String srcNodeid, IpAddress srcIp, String dstNodeId, IpAddress dstIp, IpPrefix srcSubnet,
 227                                   IpAddress gWIp, IpPrefix dstSubnet, Class<? extends TunnelTypeBase> tunType,Boolean monitorEnabled,
 228                     Integer monitorInterval,IdManagerService idManagerService, DataBroker dataBroker, List<ListenableFuture<Void>> futures, WriteTransaction t) {
 229         IpAddress gatewayIpObj = new IpAddress("0.0.0.0".toCharArray());
 230         IpAddress gwyIpAddress = (srcSubnet.equals(dstSubnet)) ? gatewayIpObj : gWIp;
 231         String parentIf =  ItmUtils.getHwParentIf(topo_id, srcNodeid);
 232         String tunTypeStr = tunType.getName();
 233         String tunnelIfName = ItmUtils.getTrunkInterfaceName(idManagerService, parentIf,
 234                         srcIp.getIpv4Address().getValue(), dstIp.getIpv4Address().getValue(), tunTypeStr);
 235         logger.debug(" Creating ExternalTrunk Interface with parameters Name - {}, parent I/f name - {}, source IP - {}, destination IP - {} gateway IP - {}", tunnelIfName, parentIf, srcIp, dstIp, gwyIpAddress);
 236         Interface hwTunnelIf = ItmUtils.buildHwTunnelInterface(tunnelIfName, String.format("%s %s", tunType.getName(), "Trunk Interface"),
 237                         true, topo_id, srcNodeid, tunType, srcIp, dstIp, gwyIpAddress, monitorEnabled, monitorInterval);
 238         InstanceIdentifier<Interface> ifIID = InstanceIdentifier.builder(Interfaces.class).child(Interface.class, new InterfaceKey(tunnelIfName)).build();
 239         logger.trace(" Writing Trunk Interface to Config DS {}, {} ", ifIID, hwTunnelIf);
 240         ItmUtils.itmCache.addInterface(hwTunnelIf);
 241         t.merge(LogicalDatastoreType.CONFIGURATION, ifIID, hwTunnelIf, true);
 242         // also update itm-state ds?
 243         InstanceIdentifier<ExternalTunnel> path = InstanceIdentifier.create(
 244                 ExternalTunnelList.class)
 245                 .child(ExternalTunnel.class, new ExternalTunnelKey( getExternalTunnelKey(dstNodeId), getExternalTunnelKey(srcNodeid), tunType));
 246         ExternalTunnel tnl = ItmUtils.buildExternalTunnel(  getExternalTunnelKey(srcNodeid),
 247                                                             getExternalTunnelKey(dstNodeId),
 248                                                             tunType, tunnelIfName);
 249         t.merge(LogicalDatastoreType.CONFIGURATION, path, tnl, true);
 250         ItmUtils.itmCache.addExternalTunnel(tnl);
 251         return true;
 252     }
 253
 254     //for tunnels from CSS
 255     private static boolean wireUp(BigInteger dpnId,String portname, Integer vlanId, IpAddress srcIp, String dstNodeId, IpAddress dstIp, IpPrefix srcSubnet,
 256                                   IpAddress gWIp, IpPrefix dstSubnet, Class<? extends TunnelTypeBase> tunType,Boolean monitorEnabled, Integer monitorInterval,
 257                     IdManagerService idManagerService, DataBroker dataBroker, List<ListenableFuture<Void>> futures, WriteTransaction t) {
 258         IpAddress gatewayIpObj = new IpAddress("0.0.0.0".toCharArray());
 259         IpAddress gwyIpAddress = (srcSubnet.equals(dstSubnet)) ? gatewayIpObj : gWIp;
 260         String parentIf = ItmUtils.getInterfaceName(dpnId, portname, vlanId);
 261         String tunTypeStr = tunType.getName();
 262         String tunnelIfName = ItmUtils.getTrunkInterfaceName(idManagerService, parentIf,
 263                         srcIp.getIpv4Address().getValue(), dstIp.getIpv4Address().getValue(), tunTypeStr);
 264         logger.debug(" Creating ExternalTrunk Interface with parameters Name - {}, parent I/f name - {}, source IP - {}, destination IP - {} gateway IP - {}", tunnelIfName, parentIf, srcIp, dstIp, gwyIpAddress);
 265         Interface extTunnelIf = ItmUtils.buildTunnelInterface(dpnId, tunnelIfName, String.format("%s %s", tunType.getName(), "Trunk Interface"), true, tunType, srcIp, dstIp, gwyIpAddress, vlanId, false,monitorEnabled, monitorInterval);
 266         InstanceIdentifier<Interface> ifIID = InstanceIdentifier.builder(Interfaces.class).child(Interface.class, new InterfaceKey(tunnelIfName)).build();
 267         logger.trace(" Writing Trunk Interface to Config DS {}, {} ", ifIID, extTunnelIf);
 268         t.merge(LogicalDatastoreType.CONFIGURATION, ifIID, extTunnelIf, true);
 269         ItmUtils.itmCache.addInterface(extTunnelIf);
 270         InstanceIdentifier<ExternalTunnel> path = InstanceIdentifier.create(
 271                 ExternalTunnelList.class)
 272                 .child(ExternalTunnel.class, new ExternalTunnelKey(getExternalTunnelKey(dstNodeId), dpnId.toString(), tunType));
 273         ExternalTunnel tnl = ItmUtils.buildExternalTunnel(  dpnId.toString(),
 274                                                             getExternalTunnelKey(dstNodeId),
 275                                                             tunType, tunnelIfName);
 276         t.merge(LogicalDatastoreType.CONFIGURATION, path, tnl, true);
 277         ItmUtils.itmCache.addExternalTunnel(tnl);
 278         return true;
 279     }
 280
 281     static String getExternalTunnelKey(String nodeid) {
 282         if (nodeid.indexOf("physicalswitch") > 0) {
 283             nodeid = nodeid.substring(0, nodeid.indexOf("physicalswitch") - 1);
 284         }
 285         return nodeid;
 286     }
 287 }
 288