interfacemanager/interfacemanager-impl/src/main/java/org/opendaylight/genius/interfacemanager/renderer/ovs/utilities/SouthboundUtils.java

   1 /*
   2  * Copyright (c) 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.genius.interfacemanager.renderer.ovs.utilities;
   9
  10 import com.google.common.collect.Maps;
  11 import com.google.common.util.concurrent.ListenableFuture;
  12 import java.math.BigInteger;
  13 import java.util.ArrayList;
  14 import java.util.HashMap;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.UUID;
  18 import org.apache.commons.lang3.BooleanUtils;
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.genius.interfacemanager.commons.InterfaceManagerCommonUtils;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.BridgeEntry;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.bridge.entry.BridgeInterfaceEntry;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfL2vlan;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfTunnel;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelMonitoringTypeBfd;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeBase;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeGre;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeMplsOverGre;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeVxlan;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.TunnelTypeVxlanGpe;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.tunnel.optional.params.TunnelOptions;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanId;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeBase;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeGre;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeVxlan;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbPortInterfaceAttributes;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentationBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.port._interface.attributes.InterfaceBfd;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.port._interface.attributes.InterfaceBfdBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.port._interface.attributes.InterfaceBfdKey;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.port._interface.attributes.Options;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.port._interface.attributes.OptionsBuilder;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.port._interface.attributes.OptionsKey;
  52 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  53 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  54 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TpId;
  55 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  56 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  57 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  58 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  59 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
  60 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointBuilder;
  61 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
  62 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  63 import org.slf4j.Logger;
  64 import org.slf4j.LoggerFactory;
  65
  66 public class SouthboundUtils {
  67     private static final Logger LOG = LoggerFactory.getLogger(SouthboundUtils.class);
  68
  69     public static final String BFD_PARAM_ENABLE = "enable";
  70     static final String BFD_PARAM_MIN_TX = "min_tx";
  71     static final String BFD_PARAM_MIN_RX = "min_rx";
  72     static final String BFD_PARAM_DECAY_MIN_RX = "decay_min_rx";
  73     static final String BFD_PARAM_FORWARDING_IF_RX = "forwarding_if_rx";
  74     static final String BFD_PARAM_CPATH_DOWN = "cpath_down";
  75     static final String BFD_PARAM_CHECK_TNL_KEY = "check_tnl_key";
  76
  77     // BFD parameters
  78     public static final String BFD_OP_STATE = "state";
  79     public static final String BFD_STATE_UP = "up";
  80     private static final String BFD_MIN_RX_VAL = "1000";
  81     private static final String BFD_MIN_TX_VAL = "100";
  82     private static final String BFD_DECAY_MIN_RX_VAL = "200";
  83     private static final String BFD_FORWARDING_IF_RX_VAL = "true";
  84     private static final String BFD_CPATH_DOWN_VAL = "false";
  85     private static final String BFD_CHECK_TNL_KEY_VAL = "false";
  86
  87     // Tunnel options
  88     private static final String TUNNEL_OPTIONS_KEY = "key";
  89     private static final String TUNNEL_OPTIONS_LOCAL_IP = "local_ip";
  90     private static final String TUNNEL_OPTIONS_REMOTE_IP = "remote_ip";
  91     private static final String TUNNEL_OPTIONS_DESTINATION_PORT = "dst_port";
  92
  93     // Option values for VxLAN-GPE + NSH tunnels
  94     private static final String TUNNEL_OPTIONS_EXTS = "exts";
  95     private static final String TUNNEL_OPTIONS_NSI = "nsi";
  96     private static final String TUNNEL_OPTIONS_NSP = "nsp";
  97     private static final String TUNNEL_OPTIONS_NSHC1 = "nshc1";
  98     private static final String TUNNEL_OPTIONS_NSHC2 = "nshc2";
  99     private static final String TUNNEL_OPTIONS_NSHC3 = "nshc3";
 100     private static final String TUNNEL_OPTIONS_NSHC4 = "nshc4";
 101
 102     // Option values for VxLAN-GPE + NSH tunnels
 103     private static final String TUNNEL_OPTIONS_VALUE_FLOW = "flow";
 104     private static final String TUNNEL_OPTIONS_VALUE_GPE = "gpe";
 105      // UDP port for VxLAN-GPE Tunnels
 106     private static final String TUNNEL_OPTIONS_VALUE_GPE_DESTINATION_PORT = "4880";
 107
 108     //
 109     public static final TopologyId OVSDB_TOPOLOGY_ID = new TopologyId(new Uri("ovsdb:1"));
 110
 111     // To keep the mapping between Tunnel Types and Tunnel Interfaces
 112     private static final Map<Class<? extends TunnelTypeBase>, Class<? extends InterfaceTypeBase>> TUNNEL_TYPE_MAP = new HashMap<Class<? extends TunnelTypeBase>, Class<? extends InterfaceTypeBase>>() {
 113         {
 114             put(TunnelTypeGre.class, InterfaceTypeGre.class);
 115             put(TunnelTypeVxlan.class, InterfaceTypeVxlan.class);
 116             put(TunnelTypeVxlanGpe.class, InterfaceTypeVxlan.class);
 117         }
 118     };
 119
 120     public static void addPortToBridge(InstanceIdentifier<?> bridgeIid, Interface iface, String portName, DataBroker dataBroker,
 121             List<ListenableFuture<Void>> futures) {
 122         IfTunnel ifTunnel = iface.getAugmentation(IfTunnel.class);
 123         if (ifTunnel != null) {
 124             addTunnelPortToBridge(ifTunnel, bridgeIid, iface, portName, dataBroker);
 125         }
 126     }
 127
 128     /*
 129      * Add all tunnels ports corresponding to the bridge to the topology config
 130      * DS
 131      */
 132     public static void addAllPortsToBridge(BridgeEntry bridgeEntry, DataBroker dataBroker,
 133             InstanceIdentifier<OvsdbBridgeAugmentation> bridgeIid, OvsdbBridgeAugmentation bridgeNew,
 134             List<ListenableFuture<Void>> futures) {
 135         String bridgeName = bridgeNew.getBridgeName().getValue();
 136         LOG.debug("adding all ports to bridge: {}", bridgeName);
 137         List<BridgeInterfaceEntry> bridgeInterfaceEntries = bridgeEntry.getBridgeInterfaceEntry();
 138         if (bridgeInterfaceEntries != null) {
 139             for (BridgeInterfaceEntry bridgeInterfaceEntry : bridgeInterfaceEntries) {
 140                 String portName = bridgeInterfaceEntry.getInterfaceName();
 141                 InterfaceKey interfaceKey = new InterfaceKey(portName);
 142                 Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
 143                 if (iface != null) {
 144                     IfTunnel ifTunnel = iface.getAugmentation(IfTunnel.class);
 145                     if (ifTunnel != null) {
 146                         addTunnelPortToBridge(ifTunnel, bridgeIid, iface, portName, dataBroker);
 147                     }
 148                     if(SouthboundUtils.isOfTunnel(ifTunnel)) {
 149                         LOG.debug("Using OFTunnel. Only one tunnel port will be added");
 150                         return;
 151                     }
 152                 } else {
 153                     LOG.debug("Interface {} not found in config DS", portName);
 154                 }
 155             }
 156         }
 157     }
 158
 159     /*
 160      * delete all tunnels ports corresponding to the bridge to the topology config
 161      * DS
 162      *
 163      * FIXME: This is not being called from anywhere.
 164      */
 165     public static void removeAllPortsFromBridge(BridgeEntry bridgeEntry, DataBroker dataBroker,
 166             InstanceIdentifier<OvsdbBridgeAugmentation> bridgeIid, OvsdbBridgeAugmentation bridgeNew) {
 167         WriteTransaction writeTransaction = dataBroker.newWriteOnlyTransaction();
 168         String bridgeName = bridgeNew.getBridgeName().getValue();
 169         LOG.debug("removing all ports from bridge: {}", bridgeName);
 170         List<BridgeInterfaceEntry> bridgeInterfaceEntries = bridgeEntry.getBridgeInterfaceEntry();
 171         if (bridgeInterfaceEntries != null) {
 172             for (BridgeInterfaceEntry bridgeInterfaceEntry : bridgeInterfaceEntries) {
 173                 String portName = bridgeInterfaceEntry.getInterfaceName();
 174                 InterfaceKey interfaceKey = new InterfaceKey(portName);
 175                 Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
 176                 if (iface != null) {
 177                     IfTunnel ifTunnel = iface.getAugmentation(IfTunnel.class);
 178                     if (ifTunnel != null) {
 179                         removeTerminationEndPoint(dataBroker, bridgeIid, iface.getName());
 180                     }
 181                     if(SouthboundUtils.isOfTunnel(ifTunnel)) {
 182                         LOG.debug("Using OFTunnel. Only one tunnel port to be removed");
 183                         return;
 184                     }
 185                 } else {
 186                     LOG.debug("Interface {} not found in config DS", portName);
 187                 }
 188             }
 189         }
 190     }
 191
 192     private static void addVlanPortToBridge(InstanceIdentifier<?> bridgeIid, IfL2vlan ifL2vlan, IfTunnel ifTunnel,
 193             OvsdbBridgeAugmentation bridgeAugmentation, String bridgeName, String portName, DataBroker dataBroker,
 194             WriteTransaction t) {
 195         if (ifL2vlan.getVlanId() != null) {
 196             addTerminationPoint(bridgeIid, portName, ifL2vlan.getVlanId().getValue(),
 197                     null, null, ifTunnel);
 198         }
 199     }
 200
 201     private static void addTunnelPortToBridge(IfTunnel ifTunnel, InstanceIdentifier<?> bridgeIid, Interface iface,
 202             String portName, DataBroker dataBroker) {
 203         LOG.debug("adding tunnel port {} to bridge {}", portName, bridgeIid);
 204
 205         Class<? extends InterfaceTypeBase> type = TUNNEL_TYPE_MAP.get(ifTunnel.getTunnelInterfaceType());
 206
 207         if (type == null) {
 208             LOG.warn("Unknown Tunnel Type obtained while creating interface: {}", iface);
 209             return;
 210         }
 211
 212         int vlanId = 0;
 213         IfL2vlan ifL2vlan = iface.getAugmentation(IfL2vlan.class);
 214         if (ifL2vlan != null && ifL2vlan.getVlanId() != null) {
 215             vlanId = ifL2vlan.getVlanId().getValue();
 216         }
 217
 218         Map<String, String> options = Maps.newHashMap();
 219
 220         // Options common to any kind of tunnel
 221         if(BooleanUtils.isTrue(ifTunnel.isTunnelSourceIpFlow())) {
 222             options.put(TUNNEL_OPTIONS_LOCAL_IP, TUNNEL_OPTIONS_VALUE_FLOW);
 223         } else {
 224             IpAddress localIp = ifTunnel.getTunnelSource();
 225             options.put(TUNNEL_OPTIONS_LOCAL_IP, localIp.getIpv4Address().getValue());
 226         }
 227         if(BooleanUtils.isTrue(ifTunnel.isTunnelRemoteIpFlow())) {
 228             options.put(TUNNEL_OPTIONS_REMOTE_IP, TUNNEL_OPTIONS_VALUE_FLOW);
 229         } else {
 230             IpAddress remoteIp = ifTunnel.getTunnelDestination();
 231             options.put(TUNNEL_OPTIONS_REMOTE_IP, remoteIp.getIpv4Address().getValue());
 232         }
 233
 234         // Specific options for each type of tunnel
 235         if (!ifTunnel.getTunnelInterfaceType().equals(TunnelTypeMplsOverGre.class)) {
 236             options.put(TUNNEL_OPTIONS_KEY, TUNNEL_OPTIONS_VALUE_FLOW);
 237         }
 238         if (ifTunnel.getTunnelInterfaceType().equals(TunnelTypeVxlanGpe.class)) {
 239             options.put(TUNNEL_OPTIONS_EXTS, TUNNEL_OPTIONS_VALUE_GPE);
 240             options.put(TUNNEL_OPTIONS_NSI, TUNNEL_OPTIONS_VALUE_FLOW);
 241             options.put(TUNNEL_OPTIONS_NSP, TUNNEL_OPTIONS_VALUE_FLOW);
 242             options.put(TUNNEL_OPTIONS_NSHC1, TUNNEL_OPTIONS_VALUE_FLOW);
 243             options.put(TUNNEL_OPTIONS_NSHC2, TUNNEL_OPTIONS_VALUE_FLOW);
 244             options.put(TUNNEL_OPTIONS_NSHC3, TUNNEL_OPTIONS_VALUE_FLOW);
 245             options.put(TUNNEL_OPTIONS_NSHC4, TUNNEL_OPTIONS_VALUE_FLOW);
 246             // VxLAN-GPE interfaces will not use the default UDP port to avoid problems with other meshes
 247             options.put(TUNNEL_OPTIONS_DESTINATION_PORT, TUNNEL_OPTIONS_VALUE_GPE_DESTINATION_PORT);
 248         }
 249
 250         if(ifTunnel.getTunnelOptions() != null) {
 251             for(TunnelOptions tunOpt : ifTunnel.getTunnelOptions()) {
 252                 options.putIfAbsent(tunOpt.getTunnelOption(), tunOpt.getValue());
 253             }
 254         }
 255
 256         addTerminationPoint(bridgeIid, portName, vlanId, type, options, ifTunnel);
 257     }
 258
 259     // Update is allowed only for tunnel monitoring attributes
 260     public static void updateBfdParamtersForTerminationPoint(InstanceIdentifier<?> bridgeIid, IfTunnel ifTunnel,
 261             String portName, WriteTransaction transaction) {
 262         InstanceIdentifier<TerminationPoint> tpIid = createTerminationPointInstanceIdentifier(
 263                 InstanceIdentifier.keyOf(bridgeIid.firstIdentifierOf(Node.class)), portName);
 264         if(isOfTunnel(ifTunnel)) {
 265             LOG.warn("BFD monitoring not supported for OFTunnels. Skipping BFD parameters for {}", portName);
 266             return;
 267         }
 268         LOG.debug("update bfd parameters for interface {}", tpIid);
 269         OvsdbTerminationPointAugmentationBuilder tpAugmentationBuilder = new OvsdbTerminationPointAugmentationBuilder();
 270         List<InterfaceBfd> bfdParams = getBfdParams(ifTunnel);
 271         tpAugmentationBuilder.setInterfaceBfd(bfdParams);
 272
 273         TerminationPointBuilder tpBuilder = new TerminationPointBuilder();
 274         tpBuilder.setKey(InstanceIdentifier.keyOf(tpIid));
 275         tpBuilder.addAugmentation(OvsdbTerminationPointAugmentation.class, tpAugmentationBuilder.build());
 276
 277         transaction.merge(LogicalDatastoreType.CONFIGURATION, tpIid, tpBuilder.build(), true);
 278     }
 279
 280     private static void addTerminationPoint(InstanceIdentifier<?> bridgeIid, String portName, int vlanId,
 281                                             Class<? extends InterfaceTypeBase> type, Map<String, String> options, IfTunnel ifTunnel) {
 282         InstanceIdentifier<TerminationPoint> tpIid = createTerminationPointInstanceIdentifier(
 283                 InstanceIdentifier.keyOf(bridgeIid.firstIdentifierOf(Node.class)), portName);
 284         OvsdbTerminationPointAugmentationBuilder tpAugmentationBuilder = new OvsdbTerminationPointAugmentationBuilder();
 285
 286         tpAugmentationBuilder.setName(portName);
 287
 288         if (type != null) {
 289             tpAugmentationBuilder.setInterfaceType(type);
 290         }
 291
 292         if (options != null) {
 293             List<Options> optionsList = new ArrayList<>();
 294             for (Map.Entry<String, String> entry : options.entrySet()) {
 295                 OptionsBuilder optionsBuilder = new OptionsBuilder();
 296                 optionsBuilder.setKey(new OptionsKey(entry.getKey()));
 297                 optionsBuilder.setOption(entry.getKey());
 298                 optionsBuilder.setValue(entry.getValue());
 299                 optionsList.add(optionsBuilder.build());
 300             }
 301             tpAugmentationBuilder.setOptions(optionsList);
 302         }
 303
 304         if (vlanId != 0) {
 305             tpAugmentationBuilder.setVlanMode(OvsdbPortInterfaceAttributes.VlanMode.Access);
 306             tpAugmentationBuilder.setVlanTag(new VlanId(vlanId));
 307         }
 308
 309         if (bfdMonitoringEnabled(ifTunnel)) {
 310             if(isOfTunnel(ifTunnel)) {
 311                 LOG.warn("BFD Monitoring not supported for OFTunnels");
 312             } else {
 313                 List<InterfaceBfd> bfdParams = getBfdParams(ifTunnel);
 314                 tpAugmentationBuilder.setInterfaceBfd(bfdParams);
 315             }
 316         }
 317
 318         TerminationPointBuilder tpBuilder = new TerminationPointBuilder();
 319         tpBuilder.setKey(InstanceIdentifier.keyOf(tpIid));
 320         tpBuilder.addAugmentation(OvsdbTerminationPointAugmentation.class, tpAugmentationBuilder.build());
 321
 322         BatchingUtils.write(tpIid, tpBuilder.build(), BatchingUtils.EntityType.TOPOLOGY_CONFIG);
 323
 324     }
 325
 326     private static List<InterfaceBfd> getBfdParams(IfTunnel ifTunnel) {
 327         List<InterfaceBfd> bfdParams = new ArrayList<>();
 328         bfdParams.add(getIfBfdObj(BFD_PARAM_ENABLE,ifTunnel != null ? ifTunnel.isMonitorEnabled().toString() :"false"));
 329         bfdParams.add(getIfBfdObj(BFD_PARAM_MIN_TX, ifTunnel != null &&  ifTunnel.getMonitorInterval() != null ?
 330                 ifTunnel.getMonitorInterval().toString() : BFD_MIN_TX_VAL));
 331         return bfdParams;
 332     }
 333
 334     private static InterfaceBfd getIfBfdObj(String key, String value) {
 335         InterfaceBfdBuilder bfdBuilder = new InterfaceBfdBuilder();
 336         bfdBuilder.setBfdKey(key).setKey(new InterfaceBfdKey(key)).setBfdValue(value);
 337         return bfdBuilder.build();
 338     }
 339
 340     public static InstanceIdentifier<TerminationPoint> createTerminationPointInstanceIdentifier(NodeKey nodekey,
 341             String portName) {
 342         InstanceIdentifier<TerminationPoint> terminationPointPath = InstanceIdentifier.create(NetworkTopology.class)
 343                 .child(Topology.class, new TopologyKey(OVSDB_TOPOLOGY_ID)).child(Node.class, nodekey)
 344                 .child(TerminationPoint.class, new TerminationPointKey(new TpId(portName)));
 345
 346         LOG.debug("Termination point InstanceIdentifier generated : {}", terminationPointPath);
 347         return terminationPointPath;
 348     }
 349
 350     public static void removeTerminationEndPoint(DataBroker dataBroker,
 351             InstanceIdentifier<?> bridgeIid, String interfaceName) {
 352         LOG.debug("removing termination point for {}", interfaceName);
 353         WriteTransaction transaction = dataBroker.newWriteOnlyTransaction();
 354         InstanceIdentifier<TerminationPoint> tpIid = SouthboundUtils.createTerminationPointInstanceIdentifier(
 355                 InstanceIdentifier.keyOf(bridgeIid.firstIdentifierOf(Node.class)), interfaceName);
 356         BatchingUtils.delete(tpIid, BatchingUtils.EntityType.TOPOLOGY_CONFIG);
 357     }
 358
 359     public static boolean bfdMonitoringEnabled(IfTunnel ifTunnel) {
 360         return ifTunnel.isMonitorEnabled()
 361                 && TunnelMonitoringTypeBfd.class.isAssignableFrom(ifTunnel.getMonitorProtocol());
 362     }
 363
 364     public static boolean isMonitorProtocolBfd(IfTunnel ifTunnel) {
 365         return TunnelMonitoringTypeBfd.class.isAssignableFrom(ifTunnel.getMonitorProtocol());
 366     }
 367
 368     public static String generateOfTunnelName(BigInteger dpId, IfTunnel ifTunnel) {
 369         String sourceKey = ifTunnel.getTunnelSource().getIpv4Address().getValue();
 370         String remoteKey = ifTunnel.getTunnelDestination().getIpv4Address().getValue();
 371         if( ifTunnel.isTunnelSourceIpFlow() != null) {
 372             sourceKey = "flow";
 373         }
 374         if( ifTunnel.isTunnelRemoteIpFlow() != null) {
 375             remoteKey = "flow";
 376         }
 377         String tunnelNameKey = dpId.toString()+sourceKey+remoteKey;
 378         String uuidStr = UUID.nameUUIDFromBytes(tunnelNameKey.getBytes()).toString().substring(0, 12).replace("-", "");
 379         return String.format("%s%s", "tun", uuidStr);
 380     }
 381
 382     public static boolean isOfTunnel(IfTunnel ifTunnel) {
 383         if( BooleanUtils.isTrue(ifTunnel.isTunnelRemoteIpFlow()) ||
 384                 BooleanUtils.isTrue(ifTunnel.isTunnelSourceIpFlow()) ) {
 385             return true;
 386         }
 387         return false;
 388     }
 389
 390 }