interfacemanager/interfacemanager-impl/src/main/java/org/opendaylight/genius/interfacemanager/renderer/ovs/utilities/SouthboundUtils.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 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.genius.interfacemanager.globals.IfmConstants;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  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.TpId;
  54 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  55 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  56 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  57 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  58 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
  59 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointBuilder;
  60 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
  61 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  62 import org.slf4j.Logger;
  63 import org.slf4j.LoggerFactory;
  64
  65 public class SouthboundUtils {
  66     private static final Logger LOG = LoggerFactory.getLogger(SouthboundUtils.class);
  67
  68     public static final String BFD_PARAM_ENABLE = "enable";
  69     static final String BFD_PARAM_MIN_TX = "min_tx";
  70     static final String BFD_PARAM_MIN_RX = "min_rx";
  71     static final String BFD_PARAM_DECAY_MIN_RX = "decay_min_rx";
  72     static final String BFD_PARAM_FORWARDING_IF_RX = "forwarding_if_rx";
  73     static final String BFD_PARAM_CPATH_DOWN = "cpath_down";
  74     static final String BFD_PARAM_CHECK_TNL_KEY = "check_tnl_key";
  75
  76     // BFD parameters
  77     public static final String BFD_OP_STATE = "state";
  78     public static final String BFD_STATE_UP = "up";
  79     private static final String BFD_MIN_RX_VAL = "1000";
  80     private static final String BFD_MIN_TX_VAL = "100";
  81     private static final String BFD_DECAY_MIN_RX_VAL = "200";
  82     private static final String BFD_FORWARDING_IF_RX_VAL = "true";
  83     private static final String BFD_CPATH_DOWN_VAL = "false";
  84     private static final String BFD_CHECK_TNL_KEY_VAL = "false";
  85
  86     // Tunnel options
  87     private static final String TUNNEL_OPTIONS_KEY = "key";
  88     private static final String TUNNEL_OPTIONS_LOCAL_IP = "local_ip";
  89     private static final String TUNNEL_OPTIONS_REMOTE_IP = "remote_ip";
  90     private static final String TUNNEL_OPTIONS_DESTINATION_PORT = "dst_port";
  91
  92     // Option values for VxLAN-GPE + NSH tunnels
  93     private static final String TUNNEL_OPTIONS_EXTS = "exts";
  94     private static final String TUNNEL_OPTIONS_NSI = "nsi";
  95     private static final String TUNNEL_OPTIONS_NSP = "nsp";
  96     private static final String TUNNEL_OPTIONS_NSHC1 = "nshc1";
  97     private static final String TUNNEL_OPTIONS_NSHC2 = "nshc2";
  98     private static final String TUNNEL_OPTIONS_NSHC3 = "nshc3";
  99     private static final String TUNNEL_OPTIONS_NSHC4 = "nshc4";
 100
 101     // Option values for VxLAN-GPE + NSH tunnels
 102     private static final String TUNNEL_OPTIONS_VALUE_FLOW = "flow";
 103     private static final String TUNNEL_OPTIONS_VALUE_GPE = "gpe";
 104     // UDP port for VxLAN-GPE Tunnels
 105     private static final String TUNNEL_OPTIONS_VALUE_GPE_DESTINATION_PORT = "4880";
 106
 107     // To keep the mapping between Tunnel Types and Tunnel Interfaces
 108     private static final Map<Class<? extends TunnelTypeBase>, Class<? extends InterfaceTypeBase>>
 109         TUNNEL_TYPE_MAP = new HashMap<Class<? extends TunnelTypeBase>, Class<? extends InterfaceTypeBase>>() {
 110             {
 111                 put(TunnelTypeGre.class, InterfaceTypeGre.class);
 112                 put(TunnelTypeVxlan.class, InterfaceTypeVxlan.class);
 113                 put(TunnelTypeVxlanGpe.class, InterfaceTypeVxlan.class);
 114             }
 115         };
 116
 117     public static void addPortToBridge(InstanceIdentifier<?> bridgeIid, Interface iface, String portName,
 118             DataBroker dataBroker, List<ListenableFuture<Void>> futures) {
 119         IfTunnel ifTunnel = iface.getAugmentation(IfTunnel.class);
 120         if (ifTunnel != null) {
 121             addTunnelPortToBridge(ifTunnel, bridgeIid, iface, portName, dataBroker);
 122         }
 123     }
 124
 125     /*
 126      * Add all tunnels ports corresponding to the bridge to the topology config
 127      * DS
 128      */
 129     public static void addAllPortsToBridge(BridgeEntry bridgeEntry, DataBroker dataBroker,
 130             InstanceIdentifier<OvsdbBridgeAugmentation> bridgeIid, OvsdbBridgeAugmentation bridgeNew,
 131             List<ListenableFuture<Void>> futures) {
 132         String bridgeName = bridgeNew.getBridgeName().getValue();
 133         LOG.debug("adding all ports to bridge: {}", bridgeName);
 134         List<BridgeInterfaceEntry> bridgeInterfaceEntries = bridgeEntry.getBridgeInterfaceEntry();
 135         if (bridgeInterfaceEntries != null) {
 136             for (BridgeInterfaceEntry bridgeInterfaceEntry : bridgeInterfaceEntries) {
 137                 String portName = bridgeInterfaceEntry.getInterfaceName();
 138                 InterfaceKey interfaceKey = new InterfaceKey(portName);
 139                 Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
 140                 if (iface != null) {
 141                     IfTunnel ifTunnel = iface.getAugmentation(IfTunnel.class);
 142                     if (ifTunnel != null) {
 143                         addTunnelPortToBridge(ifTunnel, bridgeIid, iface, portName, dataBroker);
 144                     }
 145                     if (SouthboundUtils.isOfTunnel(ifTunnel)) {
 146                         LOG.debug("Using OFTunnel. Only one tunnel port will be added");
 147                         return;
 148                     }
 149                 } else {
 150                     LOG.debug("Interface {} not found in config DS", portName);
 151                 }
 152             }
 153         }
 154     }
 155
 156     /*
 157      * delete all tunnels ports corresponding to the bridge to the topology
 158      * config DS
 159      *
 160      * FIXME: This is not being called from anywhere.
 161      */
 162     public static void removeAllPortsFromBridge(BridgeEntry bridgeEntry, DataBroker dataBroker,
 163             InstanceIdentifier<OvsdbBridgeAugmentation> bridgeIid, OvsdbBridgeAugmentation bridgeNew) {
 164         WriteTransaction writeTransaction = dataBroker.newWriteOnlyTransaction();
 165         String bridgeName = bridgeNew.getBridgeName().getValue();
 166         LOG.debug("removing all ports from bridge: {}", bridgeName);
 167         List<BridgeInterfaceEntry> bridgeInterfaceEntries = bridgeEntry.getBridgeInterfaceEntry();
 168         if (bridgeInterfaceEntries != null) {
 169             for (BridgeInterfaceEntry bridgeInterfaceEntry : bridgeInterfaceEntries) {
 170                 String portName = bridgeInterfaceEntry.getInterfaceName();
 171                 InterfaceKey interfaceKey = new InterfaceKey(portName);
 172                 Interface iface = InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
 173                 if (iface != null) {
 174                     IfTunnel ifTunnel = iface.getAugmentation(IfTunnel.class);
 175                     if (ifTunnel != null) {
 176                         removeTerminationEndPoint(dataBroker, bridgeIid, iface.getName());
 177                     }
 178                     if (SouthboundUtils.isOfTunnel(ifTunnel)) {
 179                         LOG.debug("Using OFTunnel. Only one tunnel port to be removed");
 180                         return;
 181                     }
 182                 } else {
 183                     LOG.debug("Interface {} not found in config DS", portName);
 184                 }
 185             }
 186         }
 187     }
 188
 189     private static void addVlanPortToBridge(InstanceIdentifier<?> bridgeIid, IfL2vlan ifL2vlan, IfTunnel ifTunnel,
 190             OvsdbBridgeAugmentation bridgeAugmentation, String bridgeName, String portName, DataBroker dataBroker,
 191             WriteTransaction tx) {
 192         if (ifL2vlan.getVlanId() != null) {
 193             addTerminationPoint(bridgeIid, portName, ifL2vlan.getVlanId().getValue(), null, null, ifTunnel);
 194         }
 195     }
 196
 197     private static void addTunnelPortToBridge(IfTunnel ifTunnel, InstanceIdentifier<?> bridgeIid, Interface iface,
 198             String portName, DataBroker dataBroker) {
 199         LOG.debug("adding tunnel port {} to bridge {}", portName, bridgeIid);
 200
 201         Class<? extends InterfaceTypeBase> type = TUNNEL_TYPE_MAP.get(ifTunnel.getTunnelInterfaceType());
 202
 203         if (type == null) {
 204             LOG.warn("Unknown Tunnel Type obtained while creating interface: {}", iface);
 205             return;
 206         }
 207
 208         int vlanId = 0;
 209         IfL2vlan ifL2vlan = iface.getAugmentation(IfL2vlan.class);
 210         if (ifL2vlan != null && ifL2vlan.getVlanId() != null) {
 211             vlanId = ifL2vlan.getVlanId().getValue();
 212         }
 213
 214         Map<String, String> options = Maps.newHashMap();
 215
 216         // Options common to any kind of tunnel
 217         if (BooleanUtils.isTrue(ifTunnel.isTunnelSourceIpFlow())) {
 218             options.put(TUNNEL_OPTIONS_LOCAL_IP, TUNNEL_OPTIONS_VALUE_FLOW);
 219         } else {
 220             IpAddress localIp = ifTunnel.getTunnelSource();
 221             options.put(TUNNEL_OPTIONS_LOCAL_IP, String.valueOf(localIp.getValue()));
 222         }
 223         if (BooleanUtils.isTrue(ifTunnel.isTunnelRemoteIpFlow())) {
 224             options.put(TUNNEL_OPTIONS_REMOTE_IP, TUNNEL_OPTIONS_VALUE_FLOW);
 225         } else {
 226             IpAddress remoteIp = ifTunnel.getTunnelDestination();
 227             options.put(TUNNEL_OPTIONS_REMOTE_IP, String.valueOf(remoteIp.getValue()));
 228         }
 229
 230         // Specific options for each type of tunnel
 231         if (!ifTunnel.getTunnelInterfaceType().equals(TunnelTypeMplsOverGre.class)) {
 232             options.put(TUNNEL_OPTIONS_KEY, TUNNEL_OPTIONS_VALUE_FLOW);
 233         }
 234         if (ifTunnel.getTunnelInterfaceType().equals(TunnelTypeVxlanGpe.class)) {
 235             options.put(TUNNEL_OPTIONS_EXTS, TUNNEL_OPTIONS_VALUE_GPE);
 236             options.put(TUNNEL_OPTIONS_NSI, TUNNEL_OPTIONS_VALUE_FLOW);
 237             options.put(TUNNEL_OPTIONS_NSP, TUNNEL_OPTIONS_VALUE_FLOW);
 238             options.put(TUNNEL_OPTIONS_NSHC1, TUNNEL_OPTIONS_VALUE_FLOW);
 239             options.put(TUNNEL_OPTIONS_NSHC2, TUNNEL_OPTIONS_VALUE_FLOW);
 240             options.put(TUNNEL_OPTIONS_NSHC3, TUNNEL_OPTIONS_VALUE_FLOW);
 241             options.put(TUNNEL_OPTIONS_NSHC4, TUNNEL_OPTIONS_VALUE_FLOW);
 242             // VxLAN-GPE interfaces will not use the default UDP port to avoid
 243             // problems with other meshes
 244             options.put(TUNNEL_OPTIONS_DESTINATION_PORT, TUNNEL_OPTIONS_VALUE_GPE_DESTINATION_PORT);
 245         }
 246
 247         if (ifTunnel.getTunnelOptions() != null) {
 248             for (TunnelOptions tunOpt : ifTunnel.getTunnelOptions()) {
 249                 options.putIfAbsent(tunOpt.getTunnelOption(), tunOpt.getValue());
 250             }
 251         }
 252
 253         addTerminationPoint(bridgeIid, portName, vlanId, type, options, ifTunnel);
 254     }
 255
 256     // Update is allowed only for tunnel monitoring attributes
 257     public static void updateBfdParamtersForTerminationPoint(InstanceIdentifier<?> bridgeIid, IfTunnel ifTunnel,
 258             String portName, WriteTransaction transaction) {
 259         InstanceIdentifier<TerminationPoint> tpIid = createTerminationPointInstanceIdentifier(
 260                 InstanceIdentifier.keyOf(bridgeIid.firstIdentifierOf(Node.class)), portName);
 261         if (isOfTunnel(ifTunnel)) {
 262             LOG.warn("BFD monitoring not supported for OFTunnels. Skipping BFD parameters for {}", portName);
 263             return;
 264         }
 265         LOG.debug("update bfd parameters for interface {}", tpIid);
 266         OvsdbTerminationPointAugmentationBuilder tpAugmentationBuilder = new OvsdbTerminationPointAugmentationBuilder();
 267         List<InterfaceBfd> bfdParams = getBfdParams(ifTunnel);
 268         tpAugmentationBuilder.setInterfaceBfd(bfdParams);
 269
 270         TerminationPointBuilder tpBuilder = new TerminationPointBuilder();
 271         tpBuilder.setKey(InstanceIdentifier.keyOf(tpIid));
 272         tpBuilder.addAugmentation(OvsdbTerminationPointAugmentation.class, tpAugmentationBuilder.build());
 273
 274         transaction.merge(LogicalDatastoreType.CONFIGURATION, tpIid, tpBuilder.build(), true);
 275     }
 276
 277     private static void addTerminationPoint(InstanceIdentifier<?> bridgeIid, String portName, int vlanId,
 278             Class<? extends InterfaceTypeBase> type, Map<String, String> options, IfTunnel ifTunnel) {
 279         OvsdbTerminationPointAugmentationBuilder tpAugmentationBuilder = new OvsdbTerminationPointAugmentationBuilder();
 280
 281         tpAugmentationBuilder.setName(portName);
 282
 283         if (type != null) {
 284             tpAugmentationBuilder.setInterfaceType(type);
 285         }
 286
 287         if (options != null) {
 288             List<Options> optionsList = new ArrayList<>();
 289             for (Map.Entry<String, String> entry : options.entrySet()) {
 290                 OptionsBuilder optionsBuilder = new OptionsBuilder();
 291                 optionsBuilder.setKey(new OptionsKey(entry.getKey()));
 292                 optionsBuilder.setOption(entry.getKey());
 293                 optionsBuilder.setValue(entry.getValue());
 294                 optionsList.add(optionsBuilder.build());
 295             }
 296             tpAugmentationBuilder.setOptions(optionsList);
 297         }
 298
 299         if (vlanId != 0) {
 300             tpAugmentationBuilder.setVlanMode(OvsdbPortInterfaceAttributes.VlanMode.Access);
 301             tpAugmentationBuilder.setVlanTag(new VlanId(vlanId));
 302         }
 303
 304         if (bfdMonitoringEnabled(ifTunnel)) {
 305             if (isOfTunnel(ifTunnel)) {
 306                 LOG.warn("BFD Monitoring not supported for OFTunnels");
 307             } else {
 308                 List<InterfaceBfd> bfdParams = getBfdParams(ifTunnel);
 309                 tpAugmentationBuilder.setInterfaceBfd(bfdParams);
 310             }
 311         }
 312         TerminationPointBuilder tpBuilder = new TerminationPointBuilder();
 313         InstanceIdentifier<TerminationPoint> tpIid = createTerminationPointInstanceIdentifier(
 314                 InstanceIdentifier.keyOf(bridgeIid.firstIdentifierOf(Node.class)), portName);
 315         tpBuilder.setKey(InstanceIdentifier.keyOf(tpIid));
 316         tpBuilder.addAugmentation(OvsdbTerminationPointAugmentation.class, tpAugmentationBuilder.build());
 317
 318         BatchingUtils.write(tpIid, tpBuilder.build(), BatchingUtils.EntityType.TOPOLOGY_CONFIG);
 319     }
 320
 321     private static List<InterfaceBfd> getBfdParams(IfTunnel ifTunnel) {
 322         List<InterfaceBfd> bfdParams = new ArrayList<>();
 323         bfdParams.add(
 324                 getIfBfdObj(BFD_PARAM_ENABLE, ifTunnel != null ? ifTunnel.isMonitorEnabled().toString() : "false"));
 325         bfdParams.add(getIfBfdObj(BFD_PARAM_MIN_TX,
 326                 ifTunnel != null && ifTunnel.getMonitorInterval() != null ? ifTunnel.getMonitorInterval().toString()
 327                         : BFD_MIN_TX_VAL));
 328         bfdParams.add(getIfBfdObj(BFD_PARAM_FORWARDING_IF_RX, BFD_FORWARDING_IF_RX_VAL));
 329         return bfdParams;
 330     }
 331
 332     private static InterfaceBfd getIfBfdObj(String key, String value) {
 333         InterfaceBfdBuilder bfdBuilder = new InterfaceBfdBuilder();
 334         bfdBuilder.setBfdKey(key).setKey(new InterfaceBfdKey(key)).setBfdValue(value);
 335         return bfdBuilder.build();
 336     }
 337
 338     public static InstanceIdentifier<TerminationPoint> createTerminationPointInstanceIdentifier(NodeKey nodekey,
 339             String portName) {
 340         InstanceIdentifier<TerminationPoint> terminationPointPath = InstanceIdentifier.create(NetworkTopology.class)
 341                 .child(Topology.class, new TopologyKey(IfmConstants.OVSDB_TOPOLOGY_ID)).child(Node.class, nodekey)
 342                 .child(TerminationPoint.class, new TerminationPointKey(new TpId(portName)));
 343
 344         LOG.debug("Termination point InstanceIdentifier generated : {}", terminationPointPath);
 345         return terminationPointPath;
 346     }
 347
 348     public static void removeTerminationEndPoint(DataBroker dataBroker, InstanceIdentifier<?> bridgeIid,
 349             String interfaceName) {
 350         LOG.debug("removing termination point for {}", interfaceName);
 351         WriteTransaction transaction = dataBroker.newWriteOnlyTransaction();
 352         InstanceIdentifier<TerminationPoint> tpIid = SouthboundUtils.createTerminationPointInstanceIdentifier(
 353                 InstanceIdentifier.keyOf(bridgeIid.firstIdentifierOf(Node.class)), interfaceName);
 354         BatchingUtils.delete(tpIid, BatchingUtils.EntityType.TOPOLOGY_CONFIG);
 355     }
 356
 357     public static boolean bfdMonitoringEnabled(IfTunnel ifTunnel) {
 358         return ifTunnel.isMonitorEnabled()
 359                 && TunnelMonitoringTypeBfd.class.isAssignableFrom(ifTunnel.getMonitorProtocol());
 360     }
 361
 362     public static boolean isMonitorProtocolBfd(IfTunnel ifTunnel) {
 363         return TunnelMonitoringTypeBfd.class.isAssignableFrom(ifTunnel.getMonitorProtocol());
 364     }
 365
 366     public static String generateOfTunnelName(BigInteger dpId, IfTunnel ifTunnel) {
 367         String sourceKey = new String(ifTunnel.getTunnelSource().getValue());
 368         String remoteKey = new String(ifTunnel.getTunnelDestination().getValue());
 369         if (ifTunnel.isTunnelSourceIpFlow() != null) {
 370             sourceKey = "flow";
 371         }
 372         if (ifTunnel.isTunnelRemoteIpFlow() != null) {
 373             remoteKey = "flow";
 374         }
 375         String tunnelNameKey = dpId.toString() + sourceKey + remoteKey;
 376         String uuidStr = UUID.nameUUIDFromBytes(tunnelNameKey.getBytes()).toString().substring(0, 12).replace("-", "");
 377         return String.format("%s%s", "tun", uuidStr);
 378     }
 379
 380     public static boolean isOfTunnel(IfTunnel ifTunnel) {
 381         if (BooleanUtils.isTrue(ifTunnel.isTunnelRemoteIpFlow())
 382                 || BooleanUtils.isTrue(ifTunnel.isTunnelSourceIpFlow())) {
 383             return true;
 384         }
 385         return false;
 386     }
 387
 388     public static boolean isInterfaceTypeTunnel(Class<? extends InterfaceTypeBase> interfaceType) {
 389         return interfaceType.equals(InterfaceTypeGre.class) || interfaceType.equals(InterfaceTypeVxlan.class)
 390                 ? true : false;
 391     }
 392
 393 }