bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/LinkstateAdjRIBsIn.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. 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.protocol.bgp.linkstate;
   9
  10 import com.google.common.base.Objects.ToStringHelper;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.Lists;
  13 import io.netty.buffer.ByteBuf;
  14 import io.netty.buffer.Unpooled;
  15 import java.util.List;
  16 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
  17 import org.opendaylight.protocol.bgp.rib.spi.AbstractAdjRIBs;
  18 import org.opendaylight.protocol.bgp.rib.spi.AdjRIBsTransaction;
  19 import org.opendaylight.protocol.bgp.rib.spi.Peer;
  20 import org.opendaylight.protocol.util.ByteArray;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpPrefix;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.LinkstateDestination;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.NlriType;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.PathAttributes1;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.destination.CLinkstateDestination;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.destination.CLinkstateDestinationBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.LinkstateRoutes;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.LinkstateRoute;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.LinkstateRouteBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.LinkstateRouteKey;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.Attributes1;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.Attributes1Builder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.ObjectType;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.AttributeType;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.link._case.LinkAttributesBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.node._case.NodeAttributesBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.prefix._case.PrefixAttributesBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.LinkCase;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.LinkCaseBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.NodeCase;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.NodeCaseBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.PrefixCase;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.PrefixCaseBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.link._case.LinkDescriptorsBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.link._case.LocalNodeDescriptorsBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.link._case.RemoteNodeDescriptorsBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.node._case.NodeDescriptorsBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.object.type.prefix._case.AdvertisingNodeDescriptorsBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.LinkstatePathAttribute;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.linkstate.path.attribute.LinkStateAttribute;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.linkstate.path.attribute.link.state.attribute.LinkAttributesCase;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.linkstate.path.attribute.link.state.attribute.NodeAttributesCase;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.linkstate.path.attribute.link.state.attribute.PrefixAttributesCase;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationLinkstateCase;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationLinkstateCaseBuilder;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.linkstate._case.DestinationLinkstateBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.linkstate._case.DestinationLinkstate;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.PathAttributes;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpReachNlri;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpReachNlriBuilder;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpUnreachNlri;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpUnreachNlriBuilder;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.mp.reach.nlri.AdvertizedRoutes;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.mp.unreach.nlri.WithdrawnRoutes;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.Tables;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.route.Attributes;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.route.AttributesBuilder;
  71 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  72 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  73 import org.slf4j.Logger;
  74 import org.slf4j.LoggerFactory;
  75
  76 final class LinkstateAdjRIBsIn extends AbstractAdjRIBs<CLinkstateDestination, LinkstateRoute, LinkstateRouteKey> {
  77
  78     private abstract static class LinkstateRIBEntryData<A extends LinkStateAttribute> extends RIBEntryData<CLinkstateDestination, LinkstateRoute, LinkstateRouteKey> {
  79         private final A lsattr;
  80
  81         protected LinkstateRIBEntryData(final Peer peer, final PathAttributes attributes, final A lsattr) {
  82             super(peer, attributes);
  83             this.lsattr = lsattr;
  84         }
  85
  86         protected abstract AttributeType createAttributes(A lsattr);
  87
  88         protected abstract ObjectType createObject(CLinkstateDestination key);
  89
  90         @Override
  91         protected final LinkstateRoute getDataObject(final CLinkstateDestination key, final LinkstateRouteKey id) {
  92             final LinkstateRouteBuilder builder = new LinkstateRouteBuilder();
  93
  94             builder.setKey(id);
  95             builder.setIdentifier(key.getIdentifier());
  96             builder.setProtocolId(key.getProtocolId());
  97             builder.setDistinguisher(key.getDistinguisher());
  98             builder.setAttributes(new AttributesBuilder(getPathAttributes()).addAugmentation(Attributes1.class,
  99                 new Attributes1Builder().setAttributeType(Preconditions.checkNotNull(createAttributes(this.lsattr))).build()).build());
 100             builder.setObjectType(Preconditions.checkNotNull(createObject(key)));
 101
 102             return builder.build();
 103         }
 104
 105         @Override
 106         protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
 107             return toStringHelper.add("lsattr", this.lsattr);
 108         }
 109     }
 110
 111     private static final Logger LOG = LoggerFactory.getLogger(LinkstateAdjRIBsIn.class);
 112
 113     LinkstateAdjRIBsIn(final KeyedInstanceIdentifier<Tables, TablesKey> basePath) {
 114         super(basePath);
 115     }
 116
 117     @Override
 118     public KeyedInstanceIdentifier<LinkstateRoute, LinkstateRouteKey> identifierForKey(final InstanceIdentifier<Tables> basePath, final CLinkstateDestination key) {
 119         final ByteBuf keyBuf = Unpooled.buffer();
 120         LinkstateNlriParser.serializeNlri(key, keyBuf);
 121         return basePath.child((Class)LinkstateRoutes.class).child(LinkstateRoute.class,
 122             new LinkstateRouteKey(ByteArray.readAllBytes(keyBuf)));
 123     }
 124
 125     @Override
 126     public void addRoutes(final AdjRIBsTransaction trans, final Peer peer, final MpReachNlri nlri,
 127         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.update.PathAttributes attributes) {
 128         LOG.debug("Passed nlri {}", nlri);
 129         final LinkstateDestination keys = ((DestinationLinkstateCase) nlri.getAdvertizedRoutes().getDestinationType()).getDestinationLinkstate();
 130         if (keys == null) {
 131             LOG.debug("No destinations present in advertized routes");
 132             return;
 133         }
 134
 135         LOG.debug("Iterating over route destinations {}", keys);
 136
 137         for (final CLinkstateDestination key : keys.getCLinkstateDestination()) {
 138             LOG.debug("Processing route key {}", key);
 139
 140             LinkStateAttribute lsattr = null;
 141             final PathAttributes1 pa = attributes.getAugmentation(PathAttributes1.class);
 142             if (pa != null) {
 143                 final LinkstatePathAttribute lpa = pa.getLinkstatePathAttribute();
 144                 if (lpa != null) {
 145                     lsattr = lpa.getLinkStateAttribute();
 146                 }
 147             }
 148
 149             RIBEntryData<CLinkstateDestination, LinkstateRoute, LinkstateRouteKey> data = null;
 150             switch (key.getNlriType()) {
 151             case Ipv4Prefix:
 152             case Ipv6Prefix:
 153                 data = new LinkstateRIBEntryData<PrefixAttributesCase>(peer, attributes, (PrefixAttributesCase) lsattr) {
 154                     @Override
 155                     protected AttributeType createAttributes(final PrefixAttributesCase lsattr) {
 156                         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.PrefixCaseBuilder b = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.PrefixCaseBuilder();
 157                         if (lsattr != null && lsattr.getPrefixAttributes() != null) {
 158                             b.setPrefixAttributes(new PrefixAttributesBuilder(lsattr.getPrefixAttributes()).build());
 159                         }
 160                         return b.build();
 161                     }
 162
 163                     @Override
 164                     protected PrefixCase createObject(final CLinkstateDestination key) {
 165                         final PrefixCaseBuilder b = new PrefixCaseBuilder(key.getPrefixDescriptors());
 166                         b.setAdvertisingNodeDescriptors(new AdvertisingNodeDescriptorsBuilder(key.getLocalNodeDescriptors()).build());
 167                         return b.build();
 168                     }
 169                 };
 170                 break;
 171             case Link:
 172                 data = new LinkstateRIBEntryData<LinkAttributesCase>(peer, attributes, (LinkAttributesCase) lsattr) {
 173                     @Override
 174                     protected AttributeType createAttributes(final LinkAttributesCase lsattr) {
 175                         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.LinkCaseBuilder b = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.LinkCaseBuilder();
 176                         if (lsattr != null && lsattr.getLinkAttributes() != null) {
 177                             b.setLinkAttributes(new LinkAttributesBuilder(lsattr.getLinkAttributes()).build());
 178                         }
 179                         return b.build();
 180                     }
 181
 182                     @Override
 183                     protected LinkCase createObject(final CLinkstateDestination key) {
 184                         final LinkCaseBuilder b = new LinkCaseBuilder();
 185                         b.setLinkDescriptors(new LinkDescriptorsBuilder(key.getLinkDescriptors()).build());
 186                         b.setLocalNodeDescriptors(new LocalNodeDescriptorsBuilder(key.getLocalNodeDescriptors()).build());
 187                         b.setRemoteNodeDescriptors(new RemoteNodeDescriptorsBuilder(key.getRemoteNodeDescriptors()).build());
 188                         return b.build();
 189                     }
 190                 };
 191                 break;
 192             case Node:
 193                 data = new LinkstateRIBEntryData<NodeAttributesCase>(peer, attributes, (NodeAttributesCase) lsattr) {
 194                     @Override
 195                     protected AttributeType createAttributes(final NodeAttributesCase lsattr) {
 196                         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.NodeCaseBuilder b = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.routes.linkstate.routes.linkstate.route.attributes.attribute.type.NodeCaseBuilder();
 197                         if (lsattr != null && lsattr.getNodeAttributes() != null) {
 198                             b.setNodeAttributes(new NodeAttributesBuilder(lsattr.getNodeAttributes()).build());
 199                         }
 200                         return b.build();
 201                     }
 202
 203                     @Override
 204                     protected NodeCase createObject(final CLinkstateDestination key) {
 205                         return new NodeCaseBuilder().setNodeDescriptors(new NodeDescriptorsBuilder(key.getLocalNodeDescriptors()).build()).build();
 206                     }
 207                 };
 208                 break;
 209             }
 210             super.add(trans, peer, key, data);
 211         }
 212     }
 213
 214     @Override
 215     public void removeRoutes(final AdjRIBsTransaction trans, final Peer peer, final MpUnreachNlri nlri) {
 216         final DestinationLinkstate keys = ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationLinkstateCase) nlri.getWithdrawnRoutes().getDestinationType()).getDestinationLinkstate();
 217
 218         for (final CLinkstateDestination key : keys.getCLinkstateDestination()) {
 219             super.remove(trans, peer, key);
 220         }
 221     }
 222
 223     @Override
 224     public void addAdvertisement(final MpReachNlriBuilder builder, final LinkstateRoute data) {
 225         final CLinkstateDestinationBuilder nlri = new CLinkstateDestinationBuilder();
 226         nlri.setProtocolId(data.getProtocolId());
 227         nlri.setIdentifier(data.getIdentifier());
 228         final Attributes a = data.getAttributes();
 229         if (a != null && a.getCNextHop() != null) {
 230             builder.setCNextHop(a.getCNextHop());
 231         }
 232         final ObjectType type = data.getObjectType();
 233         if (type instanceof PrefixCase) {
 234             final PrefixCase prefix = (PrefixCase) type;
 235             final IpPrefix ip = prefix.getIpReachabilityInformation();
 236
 237             if (ip.getIpv4Prefix() != null) {
 238                 nlri.setNlriType(NlriType.Ipv4Prefix);
 239             } else if (ip.getIpv6Prefix() != null) {
 240                 nlri.setNlriType(NlriType.Ipv6Prefix);
 241             } else {
 242                 throw new IllegalArgumentException("Unsupported reachability type " + ip);
 243             }
 244             nlri.setLocalNodeDescriptors(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.destination.c.linkstate.destination.LocalNodeDescriptorsBuilder(prefix.getAdvertisingNodeDescriptors()).build());
 245
 246         } else if (type instanceof NodeCase) {
 247             final NodeCase node = (NodeCase) type;
 248
 249             nlri.setNlriType(NlriType.Node);
 250             nlri.setLocalNodeDescriptors(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.destination.c.linkstate.destination.LocalNodeDescriptorsBuilder(node.getNodeDescriptors()).build());
 251         } else if (type instanceof LinkCase) {
 252             final LinkCase link = (LinkCase) type;
 253
 254             nlri.setNlriType(NlriType.Link);
 255             nlri.setLinkDescriptors(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.destination.c.linkstate.destination.LinkDescriptorsBuilder(link.getLinkDescriptors()).build());
 256             nlri.setLocalNodeDescriptors(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.destination.c.linkstate.destination.LocalNodeDescriptorsBuilder(link.getLocalNodeDescriptors()).build());
 257             nlri.setRemoteNodeDescriptors(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.linkstate.destination.c.linkstate.destination.RemoteNodeDescriptorsBuilder(link.getRemoteNodeDescriptors()).build());
 258         } else {
 259             throw new IllegalArgumentException("Unhandled linkstate route type " + type);
 260         }
 261
 262         final AdvertizedRoutes ar = builder.getAdvertizedRoutes();
 263         if (ar == null) {
 264             builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(
 265                 new DestinationLinkstateCaseBuilder().setDestinationLinkstate(new DestinationLinkstateBuilder()
 266                     .setCLinkstateDestination(Lists.newArrayList(nlri.build())).build()).build()).build());
 267         } else {
 268             ((DestinationLinkstateCase) ar.getDestinationType()).getDestinationLinkstate().getCLinkstateDestination().add(nlri.build());
 269         }
 270     }
 271
 272     @Override
 273     public void addWithdrawal(final MpUnreachNlriBuilder builder, final CLinkstateDestination id) {
 274         final WithdrawnRoutes wr = builder.getWithdrawnRoutes();
 275         if (wr == null) {
 276             builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder().setDestinationType(
 277                 new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationLinkstateCaseBuilder().setDestinationLinkstate(
 278                     new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.linkstate._case.DestinationLinkstateBuilder()
 279                         .setCLinkstateDestination(Lists.newArrayList(id)).build()).build()).build());
 280         } else {
 281             ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev131125.update.path.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationLinkstateCase) wr.getDestinationType())
 282             .getDestinationLinkstate().getCLinkstateDestination().add(id);
 283         }
 284     }
 285
 286     @SuppressWarnings("unchecked")
 287     @Override
 288     public KeyedInstanceIdentifier<LinkstateRoute, LinkstateRouteKey> routeIdentifier(final InstanceIdentifier<?> id) {
 289         return (KeyedInstanceIdentifier<LinkstateRoute, LinkstateRouteKey>)id.firstIdentifierOf(LinkstateRoute.class);
 290     }
 291
 292     @Override
 293     public CLinkstateDestination keyForIdentifier(final KeyedInstanceIdentifier<LinkstateRoute, LinkstateRouteKey> id) {
 294         final LinkstateRouteKey route = id.getKey();
 295         List<CLinkstateDestination> dests = null;
 296         try {
 297             dests = LinkstateNlriParser.parseNlri(Unpooled.wrappedBuffer(route.getRouteKey()), false);
 298         } catch (final BGPParsingException e) {
 299             LOG.warn("Unable to parse LinkstateRoute Key {}", route, e);
 300         }
 301         if (dests == null || dests.size() != 1) {
 302             LOG.warn("Null or more than one LinkstateRoute Key was parsed");
 303             return null;
 304         }
 305         return dests.get(0);
 306     }
 307 }