vpnservice/fibmanager/fibmanager-impl/src/main/java/org/opendaylight/netvirt/fibmanager/FibRpcServiceImpl.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.netvirt.fibmanager;
   9
  10 import static org.opendaylight.netvirt.fibmanager.FibConstants.COOKIE_TUNNEL;
  11 import static org.opendaylight.netvirt.fibmanager.FibConstants.DEFAULT_FIB_FLOW_PRIORITY;
  12 import static org.opendaylight.netvirt.fibmanager.FibConstants.FLOWID_PREFIX;
  13
  14 import com.google.common.base.Optional;
  15 import com.google.common.util.concurrent.Futures;
  16 import java.math.BigInteger;
  17 import java.net.InetAddress;
  18 import java.net.UnknownHostException;
  19 import java.util.ArrayList;
  20 import java.util.List;
  21 import java.util.concurrent.Future;
  22 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  23 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.genius.mdsalutil.ActionInfo;
  26 import org.opendaylight.genius.mdsalutil.ActionType;
  27 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  28 import org.opendaylight.genius.mdsalutil.InstructionType;
  29 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  30 import org.opendaylight.genius.mdsalutil.MatchFieldType;
  31 import org.opendaylight.genius.mdsalutil.MatchInfo;
  32 import org.opendaylight.genius.mdsalutil.MetaDataUtil;
  33 import org.opendaylight.genius.mdsalutil.NwConstants;
  34 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  35 import org.opendaylight.netvirt.fibmanager.api.IFibManager;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fib.rpc.rev160121.CleanupDpnForVpnInput;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fib.rpc.rev160121.CreateFibEntryInput;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fib.rpc.rev160121.FibRpcService;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fib.rpc.rev160121.PopulateFibOnDpnInput;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fib.rpc.rev160121.RemoveFibEntryInput;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.VpnInstanceOpData;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.VpnInstanceToVpnId;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntryKey;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnList;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnListBuilder;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.VpnToDpnListKey;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddressesBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddressesKey;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.VpnInterfaces;
  54 import org.opendaylight.yangtools.yang.binding.DataObject;
  55 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  56 import org.opendaylight.yangtools.yang.common.RpcResult;
  57 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  58 import org.slf4j.Logger;
  59 import org.slf4j.LoggerFactory;
  60
  61 public class FibRpcServiceImpl implements FibRpcService {
  62     private static final Logger LOG = LoggerFactory.getLogger(FibRpcServiceImpl.class);
  63     private final DataBroker dataBroker;
  64     private final IMdsalApiManager mdsalManager;
  65     private final IFibManager fibManager;
  66
  67     public FibRpcServiceImpl(final DataBroker dataBroker, final IMdsalApiManager mdsalManager,
  68                              final IFibManager fibManager) {
  69         this.dataBroker = dataBroker;
  70         this.mdsalManager = mdsalManager;
  71         this.fibManager = fibManager;
  72     }
  73
  74     /**
  75      * to install FIB routes on specified dpn with given instructions
  76      *
  77      */
  78     @Override
  79     public Future<RpcResult<Void>> createFibEntry(CreateFibEntryInput input) {
  80
  81         BigInteger dpnId = input.getSourceDpid();
  82         String vpnName = input.getVpnName();
  83         long vpnId = getVpnId(dataBroker, vpnName);
  84         String vpnRd = getVpnRd(dataBroker, vpnName);
  85         String ipAddress = input.getIpAddress();
  86         LOG.info("Create custom FIB entry - {} on dpn {} for VPN {} ", ipAddress, dpnId, vpnName);
  87         List<Instruction> instructions = input.getInstruction();
  88         LOG.info("ADD: Adding Custom Fib Entry rd {} prefix {} label {}", vpnRd, ipAddress, input.getServiceId());
  89         makeLocalFibEntry(vpnId, dpnId, ipAddress, instructions);
  90         updateVpnToDpnAssociation(vpnId, dpnId, ipAddress, vpnName);
  91         LOG.info("ADD: Added Custom Fib Entry rd {} prefix {} label {}", vpnRd, ipAddress, input.getServiceId());
  92         return Futures.immediateFuture(RpcResultBuilder.<Void>success().build());
  93     }
  94
  95     /**
  96      * to remove FIB/LFIB/TST routes from specified dpn
  97      *
  98      */
  99     @Override
 100     public Future<RpcResult<Void>> removeFibEntry(RemoveFibEntryInput input) {
 101         BigInteger dpnId = input.getSourceDpid();
 102         String vpnName = input.getVpnName();
 103         long vpnId = getVpnId(dataBroker, vpnName);
 104         String vpnRd = getVpnRd(dataBroker, vpnName);
 105         long serviceId = input.getServiceId();
 106         String ipAddress = input.getIpAddress();
 107
 108         LOG.info("Delete custom FIB entry - {} on dpn {} for VPN {} ", ipAddress, dpnId, vpnName);
 109         LOG.info("REMOVE: Removing Custom Fib Entry rd {} prefix {} label {}", vpnRd, ipAddress, input.getServiceId());
 110         removeLocalFibEntry(dpnId, vpnId, ipAddress);
 111         //removeLFibTableEntry(dpnId, serviceId);
 112         //removeTunnelTableEntry(dpnId, serviceId);
 113         removeFromVpnDpnAssociation(vpnId, dpnId, ipAddress, vpnName);
 114         LOG.info("REMOVE: Removed Custom Fib Entry rd {} prefix {} label {}", vpnRd, ipAddress, input.getServiceId());
 115
 116         return Futures.immediateFuture(RpcResultBuilder.<Void>success().build());
 117     }
 118
 119
 120     @Override
 121     public Future<RpcResult<Void>> populateFibOnDpn(PopulateFibOnDpnInput input) {
 122         fibManager.populateFibOnNewDpn(input.getDpid(), input.getVpnId(), input.getRd(), null);
 123         return Futures.immediateFuture(RpcResultBuilder.<Void>success().build());
 124     }
 125
 126     @Override
 127     public Future<RpcResult<Void>> cleanupDpnForVpn(CleanupDpnForVpnInput input) {
 128         fibManager.cleanUpDpnForVpn(input.getDpid(), input.getVpnId(), input.getRd(), null);
 129         return Futures.immediateFuture(RpcResultBuilder.<Void>success().build());
 130     }
 131
 132     private void removeLocalFibEntry(BigInteger dpnId, long vpnId, String ipPrefix) {
 133         String values[] = ipPrefix.split("/");
 134         String ipAddress = values[0];
 135         int prefixLength = (values.length == 1) ? 0 : Integer.parseInt(values[1]);
 136         LOG.debug("Removing route from DPN. ip {} masklen {}", ipAddress, prefixLength);
 137         InetAddress destPrefix = null;
 138         try {
 139             destPrefix = InetAddress.getByName(ipAddress);
 140         } catch (UnknownHostException e) {
 141             LOG.error("UnknowHostException in removeRoute. Failed  to remove Route for ipPrefix {}", ipAddress, e);
 142             return;
 143         }
 144         List<MatchInfo> matches = new ArrayList<MatchInfo>();
 145
 146         matches.add(new MatchInfo(MatchFieldType.metadata, new BigInteger[] {
 147                 MetaDataUtil.getVpnIdMetadata(vpnId), MetaDataUtil.METADATA_MASK_VRFID }));
 148
 149         matches.add(new MatchInfo(MatchFieldType.eth_type,
 150                 new long[] { 0x0800L }));
 151
 152         if(prefixLength != 0) {
 153             matches.add(new MatchInfo(MatchFieldType.ipv4_destination, new String[] {
 154                     destPrefix.getHostAddress(), Integer.toString(prefixLength) }));
 155         }
 156
 157         String flowRef = getFlowRef(dpnId, NwConstants.L3_FIB_TABLE, vpnId, ipAddress);
 158
 159
 160         int priority = DEFAULT_FIB_FLOW_PRIORITY + prefixLength;
 161         Flow flowEntity = MDSALUtil.buildFlowNew(NwConstants.L3_FIB_TABLE, flowRef,
 162                 priority, flowRef, 0, 0,
 163                 NwConstants.COOKIE_VM_FIB_TABLE, matches, null);
 164
 165         mdsalManager.removeFlow(dpnId, flowEntity);
 166
 167         LOG.debug("FIB entry for route {} on dpn {} removed successfully", ipAddress, dpnId);
 168     }
 169
 170     private void removeLFibTableEntry(BigInteger dpnId, long serviceId) {
 171         List<MatchInfo> matches = new ArrayList<MatchInfo>();
 172         matches.add(new MatchInfo(MatchFieldType.eth_type,
 173                 new long[] { 0x8847L }));
 174         matches.add(new MatchInfo(MatchFieldType.mpls_label, new String[]{Long.toString(serviceId)}));
 175
 176         String flowRef = getFlowRef(dpnId, NwConstants.L3_LFIB_TABLE, serviceId, "");
 177
 178         LOG.debug("removing LFib entry with flow ref {}", flowRef);
 179
 180         Flow flowEntity = MDSALUtil.buildFlowNew(NwConstants.L3_LFIB_TABLE, flowRef,
 181                 DEFAULT_FIB_FLOW_PRIORITY, flowRef, 0, 0,
 182                 NwConstants.COOKIE_VM_LFIB_TABLE, matches, null);
 183
 184         mdsalManager.removeFlow(dpnId, flowEntity);
 185
 186         LOG.debug("LFIB Entry for dpID : {} label : {} removed successfully {}",dpnId, serviceId);
 187     }
 188
 189     private void removeTunnelTableEntry(BigInteger dpnId, long serviceId) {
 190         LOG.info("remove terminatingServiceActions called with DpnId = {} and label = {}", dpnId , serviceId);
 191         List<MatchInfo> mkMatches = new ArrayList<MatchInfo>();
 192         // Matching metadata
 193         mkMatches.add(new MatchInfo(MatchFieldType.tunnel_id, new BigInteger[] {BigInteger.valueOf(serviceId)}));
 194         Flow flowEntity = MDSALUtil.buildFlowNew(NwConstants.INTERNAL_TUNNEL_TABLE,
 195                 getFlowRef(dpnId, NwConstants.INTERNAL_TUNNEL_TABLE, serviceId, ""),
 196                 5, String.format("%s:%d","TST Flow Entry ",serviceId), 0, 0,
 197                 COOKIE_TUNNEL.add(BigInteger.valueOf(serviceId)), mkMatches, null);
 198         mdsalManager.removeFlow(dpnId, flowEntity);
 199         LOG.debug("Terminating service Entry for dpID {} : label : {} removed successfully {}",dpnId, serviceId);
 200     }
 201
 202     private void makeTunnelTableEntry(BigInteger dpnId, long serviceId, List<Instruction> customInstructions) {
 203         List<MatchInfo> mkMatches = new ArrayList<MatchInfo>();
 204
 205         LOG.info("create terminatingServiceAction on DpnId = {} and serviceId = {} and actions = {}", dpnId , serviceId);
 206
 207         mkMatches.add(new MatchInfo(MatchFieldType.tunnel_id, new BigInteger[] {BigInteger.valueOf(serviceId)}));
 208
 209         Flow terminatingServiceTableFlowEntity = MDSALUtil.buildFlowNew(NwConstants.INTERNAL_TUNNEL_TABLE,
 210                 getFlowRef(dpnId, NwConstants.INTERNAL_TUNNEL_TABLE, serviceId, ""), 5, String.format("%s:%d","TST Flow Entry ",serviceId),
 211                 0, 0, COOKIE_TUNNEL.add(BigInteger.valueOf(serviceId)),mkMatches, customInstructions);
 212
 213         mdsalManager.installFlow(dpnId, terminatingServiceTableFlowEntity);
 214     }
 215
 216     private long getIpAddress(byte[] rawIpAddress) {
 217         return (((rawIpAddress[0] & 0xFF) << (3 * 8)) + ((rawIpAddress[1] & 0xFF) << (2 * 8))
 218                 + ((rawIpAddress[2] & 0xFF) << (1 * 8)) + (rawIpAddress[3] & 0xFF)) & 0xffffffffL;
 219     }
 220
 221     private void makeLocalFibEntry(long vpnId, BigInteger dpnId, String ipPrefix, List<Instruction> customInstructions) {
 222         String values[] = ipPrefix.split("/");
 223         String ipAddress = values[0];
 224         int prefixLength = (values.length == 1) ? 0 : Integer.parseInt(values[1]);
 225         LOG.debug("Adding route to DPN. ip {} masklen {}", ipAddress, prefixLength);
 226         InetAddress destPrefix = null;
 227         try {
 228             destPrefix = InetAddress.getByName(ipAddress);
 229         } catch (UnknownHostException e) {
 230             LOG.error("UnknowHostException in addRoute. Failed  to add Route for ipPrefix {}", ipAddress, e);
 231             return;
 232         }
 233         List<MatchInfo> matches = new ArrayList<MatchInfo>();
 234
 235         matches.add(new MatchInfo(MatchFieldType.metadata, new BigInteger[] {
 236                 MetaDataUtil.getVpnIdMetadata(vpnId), MetaDataUtil.METADATA_MASK_VRFID }));
 237
 238         matches.add(new MatchInfo(MatchFieldType.eth_type,
 239                 new long[] { 0x0800L }));
 240
 241         if(prefixLength != 0) {
 242             matches.add(new MatchInfo(MatchFieldType.ipv4_destination, new String[] {
 243                     destPrefix.getHostAddress(), Integer.toString(prefixLength) }));
 244         }
 245
 246         String flowRef = getFlowRef(dpnId, NwConstants.L3_FIB_TABLE, vpnId, ipAddress);
 247
 248
 249         int priority = DEFAULT_FIB_FLOW_PRIORITY + prefixLength;
 250         Flow flowEntity = MDSALUtil.buildFlowNew(NwConstants.L3_FIB_TABLE, flowRef,
 251                 priority, flowRef, 0, 0,
 252                 NwConstants.COOKIE_VM_FIB_TABLE, matches, customInstructions);
 253
 254         mdsalManager.installFlow(dpnId, flowEntity);
 255
 256         LOG.debug("FIB entry for route {} on dpn {} installed successfully", ipAddress, dpnId);
 257     }
 258
 259     private void makeLFibTableEntry(BigInteger dpId, long serviceId, List<Instruction> customInstructions) {
 260         List<MatchInfo> matches = new ArrayList<MatchInfo>();
 261         matches.add(new MatchInfo(MatchFieldType.eth_type,
 262                 new long[] { 0x8847L }));
 263         matches.add(new MatchInfo(MatchFieldType.mpls_label, new String[]{Long.toString(serviceId)}));
 264
 265         List<Instruction> instructions = new ArrayList<Instruction>();
 266         List<ActionInfo> actionsInfos = new ArrayList<ActionInfo>();
 267         actionsInfos.add(new ActionInfo(ActionType.pop_mpls, new String[]{}));
 268         Instruction writeInstruction = new InstructionInfo(InstructionType.write_actions, actionsInfos).buildInstruction(0);
 269         instructions.add(writeInstruction);
 270         instructions.addAll(customInstructions);
 271
 272         // Install the flow entry in L3_LFIB_TABLE
 273         String flowRef = getFlowRef(dpId, NwConstants.L3_LFIB_TABLE, serviceId, "");
 274
 275         Flow flowEntity = MDSALUtil.buildFlowNew(NwConstants.L3_LFIB_TABLE, flowRef,
 276                 DEFAULT_FIB_FLOW_PRIORITY, flowRef, 0, 0,
 277                 NwConstants.COOKIE_VM_LFIB_TABLE, matches, instructions);
 278
 279         mdsalManager.installFlow(dpId, flowEntity);
 280
 281         LOG.debug("LFIB Entry for dpID {} : label : {} modified successfully {}",dpId, serviceId );
 282     }
 283
 284     private String getFlowRef(BigInteger dpnId, short tableId, long id, String ipAddress) {
 285         return new StringBuilder(64).append(FLOWID_PREFIX).append(dpnId).append(NwConstants.FLOWID_SEPARATOR)
 286                 .append(tableId).append(NwConstants.FLOWID_SEPARATOR)
 287                 .append(id).append(NwConstants.FLOWID_SEPARATOR).append(ipAddress).toString();
 288     }
 289
 290     private synchronized void updateVpnToDpnAssociation(long vpnId, BigInteger dpnId, String ipAddr, String vpnName) {
 291         LOG.debug("Updating VPN to DPN list for dpn : {} for VPN: {} with ip: {}",
 292                 dpnId, vpnName, ipAddr);
 293         String routeDistinguisher = getVpnRd(dataBroker, vpnName);
 294         String rd = (routeDistinguisher == null) ? vpnName : routeDistinguisher;
 295         synchronized (vpnName.intern()) {
 296             InstanceIdentifier<VpnToDpnList> id = getVpnToDpnListIdentifier(rd, dpnId);
 297             Optional<VpnToDpnList> dpnInVpn = MDSALUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
 298             org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddresses
 299                     ipAddress = new IpAddressesBuilder().setIpAddress(ipAddr).build();
 300
 301             if (dpnInVpn.isPresent()) {
 302                 MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.OPERATIONAL, id.child(
 303                         org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance
 304                                 .op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddresses.class,
 305                         new IpAddressesKey(ipAddr)), ipAddress);
 306             } else {
 307                 MDSALUtil.syncUpdate(dataBroker, LogicalDatastoreType.OPERATIONAL,
 308                         getVpnInstanceOpDataIdentifier(rd),
 309                         getVpnInstanceOpData(rd, vpnId, vpnName));
 310                 VpnToDpnListBuilder vpnToDpnList = new VpnToDpnListBuilder().setDpnId(dpnId);
 311                 List<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data
 312                         .vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddresses> ipAddresses = new ArrayList<>();
 313                 ipAddresses.add(ipAddress);
 314                 MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.OPERATIONAL, id,
 315                         vpnToDpnList.setIpAddresses(ipAddresses).build());
 316                 LOG.debug("populate FIB on new dpn {} for VPN {}", dpnId, vpnName);
 317                 fibManager.populateFibOnNewDpn(dpnId, vpnId, rd, null);
 318             }
 319         }
 320     }
 321
 322     private synchronized void removeFromVpnDpnAssociation(long vpnId, BigInteger dpnId, String ipAddr, String vpnName) {
 323         LOG.debug("Removing association of VPN to DPN list for dpn : {} for VPN: {} with ip: {}",
 324                 dpnId, vpnName, ipAddr);
 325         String routeDistinguisher = getVpnRd(dataBroker, vpnName);
 326         String rd = (routeDistinguisher == null) ? vpnName : routeDistinguisher;
 327         synchronized (vpnName.intern()) {
 328             InstanceIdentifier<VpnToDpnList> id = getVpnToDpnListIdentifier(rd, dpnId);
 329             Optional<VpnToDpnList> dpnInVpn = MDSALUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
 330             if (dpnInVpn.isPresent()) {
 331                 List<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data
 332                         .vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddresses> ipAddresses = dpnInVpn.get().getIpAddresses();
 333                 org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddresses
 334                         ipAddress = new IpAddressesBuilder().setIpAddress(ipAddr).build();
 335
 336                 if (ipAddresses != null && ipAddresses.remove(ipAddress)) {
 337                     if (ipAddresses.isEmpty()) {
 338                         List<VpnInterfaces> vpnInterfaces = dpnInVpn.get().getVpnInterfaces();
 339                         if (vpnInterfaces == null || vpnInterfaces.isEmpty()) {
 340                             //Clean up the dpn
 341                             LOG.debug("Cleaning up dpn {} from VPN {}", dpnId, vpnName);
 342                             MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
 343                             fibManager.cleanUpDpnForVpn(dpnId, vpnId, rd, null);
 344                         }
 345                     } else {
 346                         delete(dataBroker, LogicalDatastoreType.OPERATIONAL, id.child(
 347                                 org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data
 348                                         .vpn.instance.op.data.entry.vpn.to.dpn.list.IpAddresses.class,
 349                                 new IpAddressesKey(ipAddr)));
 350                     }
 351                 }
 352             }
 353         }
 354     }
 355
 356     //TODO: Below Util methods to be removed once VpnUtil methods are exposed in api bundle
 357     public static String getVpnRd(DataBroker broker, String vpnName) {
 358
 359         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance> id
 360                 = getVpnInstanceToVpnIdIdentifier(vpnName);
 361         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance> vpnInstance
 362                 = MDSALUtil.read(broker, LogicalDatastoreType.CONFIGURATION, id);
 363
 364         String rd = null;
 365         if(vpnInstance.isPresent()) {
 366             rd = vpnInstance.get().getVrfId();
 367         }
 368         return rd;
 369     }
 370
 371     static InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance>
 372     getVpnInstanceToVpnIdIdentifier(String vpnName) {
 373         return InstanceIdentifier.builder(VpnInstanceToVpnId.class)
 374                 .child(org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance.class,
 375                         new org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstanceKey(vpnName)).build();
 376     }
 377
 378
 379     static InstanceIdentifier<VpnToDpnList> getVpnToDpnListIdentifier(String rd, BigInteger dpnId) {
 380         return InstanceIdentifier.builder(VpnInstanceOpData.class)
 381                 .child(VpnInstanceOpDataEntry.class, new VpnInstanceOpDataEntryKey(rd))
 382                 .child(VpnToDpnList.class, new VpnToDpnListKey(dpnId)).build();
 383     }
 384
 385     static InstanceIdentifier<VpnInstanceOpDataEntry> getVpnInstanceOpDataIdentifier(String rd) {
 386         return InstanceIdentifier.builder(VpnInstanceOpData.class)
 387                 .child(VpnInstanceOpDataEntry.class, new VpnInstanceOpDataEntryKey(rd)).build();
 388     }
 389
 390     static VpnInstanceOpDataEntry getVpnInstanceOpData(String rd, long vpnId, String vpnName) {
 391         return new VpnInstanceOpDataEntryBuilder().setVrfId(rd).setVpnId(vpnId).setVpnInstanceName(vpnName).build();
 392     }
 393
 394     static <T extends DataObject> void delete(DataBroker broker, LogicalDatastoreType datastoreType,
 395                                               InstanceIdentifier<T> path) {
 396         WriteTransaction tx = broker.newWriteOnlyTransaction();
 397         tx.delete(datastoreType, path);
 398         tx.submit();
 399     }
 400
 401     static long getVpnId(DataBroker broker, String vpnName) {
 402
 403         InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance> id
 404                 = getVpnInstanceToVpnIdIdentifier(vpnName);
 405         Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.to.vpn.id.VpnInstance> vpnInstance
 406                 = MDSALUtil.read(broker, LogicalDatastoreType.CONFIGURATION, id);
 407
 408         long vpnId = -1;
 409         if(vpnInstance.isPresent()) {
 410             vpnId = vpnInstance.get().getVpnId();
 411         }
 412         return vpnId;
 413     }
 414
 415
 416 }