bgp/rib-spi/src/main/java/org/opendaylight/protocol/bgp/rib/spi/AbstractRIBSupport.java

   1 /*
   2  * Copyright (c) 2015 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.rib.spi;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import com.google.common.cache.CacheBuilder;
  14 import com.google.common.cache.CacheLoader;
  15 import com.google.common.cache.LoadingCache;
  16 import java.util.Collection;
  17 import java.util.Collections;
  18 import java.util.Optional;
  19 import javax.annotation.Nonnull;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  22 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  23 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.Update;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.UpdateBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.AttributesBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.Attributes1;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.Attributes1Builder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.Attributes2;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.Attributes2Builder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.destination.DestinationType;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpReachNlri;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpReachNlriBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpUnreachNlri;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpUnreachNlriBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.reach.nlri.AdvertizedRoutes;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.unreach.nlri.WithdrawnRoutes;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.BgpRib;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.Route;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.Rib;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.bgp.rib.rib.LocRib;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.Tables;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.AddressFamily;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.RouteDistinguisher;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.RouteDistinguisherBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.SubsequentAddressFamily;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.next.hop.CNextHop;
  54 import org.opendaylight.yangtools.yang.binding.ChildOf;
  55 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
  56 import org.opendaylight.yangtools.yang.binding.DataObject;
  57 import org.opendaylight.yangtools.yang.binding.Identifiable;
  58 import org.opendaylight.yangtools.yang.binding.Identifier;
  59 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  60 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  61 import org.opendaylight.yangtools.yang.common.QName;
  62 import org.opendaylight.yangtools.yang.common.QNameModule;
  63 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  64 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  65 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  66 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  67 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
  68 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  69 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  70 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
  71 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  72 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
  73 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  74 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  75 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeAttrBuilder;
  76 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
  77 import org.slf4j.Logger;
  78 import org.slf4j.LoggerFactory;
  79
  80 @Beta
  81 public abstract class AbstractRIBSupport<
  82         C extends Routes & DataObject & ChoiceIn<Tables>,
  83         S extends ChildOf<? super C>,
  84         R extends Route & ChildOf<? super S> & Identifiable<I>,
  85         I extends Identifier<R>>
  86         implements RIBSupport<C, S, R, I> {
  87     public static final String ROUTE_KEY = "route-key";
  88     private static final Logger LOG = LoggerFactory.getLogger(AbstractRIBSupport.class);
  89     private static final NodeIdentifier ADVERTISED_ROUTES = new NodeIdentifier(AdvertizedRoutes.QNAME);
  90     private static final NodeIdentifier WITHDRAWN_ROUTES = new NodeIdentifier(WithdrawnRoutes.QNAME);
  91     private static final NodeIdentifier DESTINATION_TYPE = new NodeIdentifier(DestinationType.QNAME);
  92     private static final InstanceIdentifier<Tables> TABLES_II = InstanceIdentifier.create(BgpRib.class)
  93             .child(Rib.class).child(LocRib.class).child(Tables.class);
  94     private static final NodeIdentifier ROUTES = new NodeIdentifier(Routes.QNAME);
  95     private static final ApplyRoute DELETE_ROUTE = new DeleteRoute();
  96     // Instance identifier to table/(choice routes)/(map of route)
  97     private final LoadingCache<YangInstanceIdentifier, YangInstanceIdentifier> routesPath = CacheBuilder.newBuilder()
  98             .weakValues().build(new CacheLoader<YangInstanceIdentifier, YangInstanceIdentifier>() {
  99                 @Override
 100                 public YangInstanceIdentifier load(@Nonnull final YangInstanceIdentifier routesTablePaths) {
 101                     return routesTablePaths.node(routesContainerIdentifier()).node(routeQName());
 102                 }
 103             });
 104     private final NodeIdentifier routesContainerIdentifier;
 105     private final NodeIdentifier routesListIdentifier;
 106     private final NodeIdentifier routeAttributesIdentifier;
 107     private final Class<C> cazeClass;
 108     private final Class<S> containerClass;
 109     private final Class<R> listClass;
 110     private final ApplyRoute putRoute = new PutRoute();
 111     private final MapEntryNode emptyTable;
 112     private final QName routeQname;
 113     private final Class<? extends AddressFamily> afiClass;
 114     private final Class<? extends SubsequentAddressFamily> safiClass;
 115     private final NodeIdentifier destinationNid;
 116     private final QName pathIdQname;
 117     private final NodeIdentifier pathIdNid;
 118     private final QName routeKeyQname;
 119     private final NodeIdentifier prefixTypeNid;
 120     private final NodeIdentifier rdNid;
 121     protected final BindingNormalizedNodeSerializer mappingService;
 122     protected final YangInstanceIdentifier routeDefaultYii;
 123     private final TablesKey tk;
 124
 125     /**
 126      * Default constructor. Requires the QName of the container augmented under the routes choice
 127      * node in instantiations of the rib grouping. It is assumed that this container is defined by
 128      * the same model which populates it with route grouping instantiation, and by extension with
 129      * the route attributes container.
 130      *
 131      * @param mappingService   Serialization service
 132      * @param cazeClass        Binding class of the AFI/SAFI-specific case statement, must not be null
 133      * @param containerClass   Binding class of the container in routes choice, must not be null.
 134      * @param listClass        Binding class of the route list, nust not be null;
 135      * @param afiClass         address Family Class
 136      * @param safiClass        SubsequentAddressFamily
 137      * @param destContainerQname destination Container Qname
 138      */
 139     protected AbstractRIBSupport(
 140             final BindingNormalizedNodeSerializer mappingService,
 141             final Class<C> cazeClass,
 142             final Class<S> containerClass,
 143             final Class<R> listClass,
 144             final Class<? extends AddressFamily> afiClass,
 145             final Class<? extends SubsequentAddressFamily> safiClass,
 146             final QName destContainerQname) {
 147         final QNameModule module = BindingReflections.getQNameModule(cazeClass);
 148         this.routesContainerIdentifier
 149                 = new NodeIdentifier(BindingReflections.findQName(containerClass).withModule(module));
 150         this.routeAttributesIdentifier = new NodeIdentifier(Attributes.QNAME.withModule(module));
 151         this.cazeClass = requireNonNull(cazeClass);
 152         this.mappingService = requireNonNull(mappingService);
 153         this.containerClass = requireNonNull(containerClass);
 154         this.listClass = requireNonNull(listClass);
 155         this.routeQname = BindingReflections.findQName(listClass).withModule(module);
 156         this.routesListIdentifier = new NodeIdentifier(this.routeQname);
 157         this.tk = new TablesKey(afiClass, safiClass);
 158         this.emptyTable = (MapEntryNode) this.mappingService
 159                 .toNormalizedNode(TABLES_II, new TablesBuilder().withKey(tk)
 160                         .setRoutes(emptyRoutesCase())
 161                         .setAttributes(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib
 162                                 .rev180329.rib.tables.AttributesBuilder().build()).build()).getValue();
 163         this.afiClass = afiClass;
 164         this.safiClass = safiClass;
 165         this.destinationNid = new NodeIdentifier(destContainerQname);
 166         this.pathIdQname = QName.create(routeQName(), "path-id").intern();
 167         this.pathIdNid = new NodeIdentifier(this.pathIdQname);
 168         this.routeKeyQname = QName.create(routeQName(), ROUTE_KEY).intern();
 169         this.prefixTypeNid = NodeIdentifier.create(QName.create(destContainerQname, "prefix").intern());
 170         this.rdNid = NodeIdentifier.create(QName.create(destContainerQname, "route-distinguisher").intern());
 171         this.routeDefaultYii =
 172                 YangInstanceIdentifier.builder()
 173                         .node(BgpRib.QNAME)
 174                         .node(Rib.QNAME)
 175                         .node(Rib.QNAME)
 176                         .node(LocRib.QNAME)
 177                         .node(Tables.QNAME)
 178                         .node(Tables.QNAME)
 179                         .node(Routes.QNAME)
 180                         .node(BindingReflections.findQName(containerClass).withModule(module))
 181                         .node(this.routeQname)
 182                         .node(this.routeQname).build();
 183     }
 184
 185     @Override
 186     public final TablesKey getTablesKey() {
 187         return this.tk;
 188     }
 189
 190     @Override
 191     public final Class<C> routesCaseClass() {
 192         return this.cazeClass;
 193     }
 194
 195     @Override
 196     public final Class<S> routesContainerClass() {
 197         return this.containerClass;
 198     }
 199
 200     @Override
 201     public final Class<R> routesListClass() {
 202         return this.listClass;
 203     }
 204
 205     @Override
 206     public final MapEntryNode emptyTable() {
 207         return this.emptyTable;
 208     }
 209
 210     public final QName routeQName() {
 211         return this.routeQname;
 212     }
 213
 214     protected final NodeIdentifier prefixNid() {
 215         return this.prefixTypeNid;
 216     }
 217
 218     protected final NodeIdentifier routeNid() {
 219         return this.routesListIdentifier;
 220     }
 221
 222     @Override
 223     public final Class<? extends AddressFamily> getAfi() {
 224         return this.afiClass;
 225     }
 226
 227     @Override
 228     public final Class<? extends SubsequentAddressFamily> getSafi() {
 229         return this.safiClass;
 230     }
 231
 232     /**
 233      * Build MpReachNlri object from DOM representation.
 234      *
 235      * @param routes Collection of MapEntryNode DOM representation of routes
 236      * @param hop    CNextHop as it was parsed from Attributes, to be included in MpReach object
 237      * @return MpReachNlri
 238      */
 239     private MpReachNlri buildReach(final Collection<MapEntryNode> routes, final CNextHop hop) {
 240         final MpReachNlriBuilder mb = new MpReachNlriBuilder();
 241         mb.setAfi(this.getAfi());
 242         mb.setSafi(this.getSafi());
 243         mb.setCNextHop(hop);
 244         mb.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(buildDestination(routes)).build());
 245         return mb.build();
 246     }
 247
 248     /**
 249      * Build MpUnReachNlri object from DOM representation.
 250      *
 251      * @param routes Collection of MapEntryNode DOM representation of routes
 252      * @return MpUnreachNlri
 253      */
 254     private MpUnreachNlri buildUnreach(final Collection<MapEntryNode> routes) {
 255         final MpUnreachNlriBuilder mb = new MpUnreachNlriBuilder();
 256         mb.setAfi(this.getAfi());
 257         mb.setSafi(this.getSafi());
 258         mb.setWithdrawnRoutes(new WithdrawnRoutesBuilder()
 259                 .setDestinationType(buildWithdrawnDestination(routes)).build());
 260         return mb.build();
 261     }
 262
 263     protected abstract DestinationType buildDestination(Collection<MapEntryNode> routes);
 264
 265     protected abstract DestinationType buildWithdrawnDestination(Collection<MapEntryNode> routes);
 266
 267     /**
 268      * Return the {@link NodeIdentifier} of the AFI/SAFI-specific container under
 269      * the RIB routes.
 270      *
 271      * @return Container identifier, may not be null.
 272      */
 273     protected final NodeIdentifier routesContainerIdentifier() {
 274         return this.routesContainerIdentifier;
 275     }
 276
 277     /**
 278      * Return the {@link NodeIdentifier} of the AFI/SAFI-specific container under
 279      * the NLRI destination.
 280      *
 281      * @return Container identifier, may not be null.
 282      */
 283     private NodeIdentifier destinationContainerIdentifier() {
 284         return this.destinationNid;
 285     }
 286
 287     /**
 288      * Given the destination as ContainerNode, implementation needs to parse the DOM model
 289      * from this point onward:
 290      *
 291      * {@code /bgp-mp:mp-unreach-nlri/bgp-mp:withdrawn-routes/bgp-mp:destination-type}
 292      * and delete the routes from its RIBs.
 293      *
 294      * @param tx           DOMDataWriteTransaction to be passed into implementation
 295      * @param tablePath    YangInstanceIdentifier to be passed into implementation
 296      * @param destination  ContainerNode DOM representation of NLRI in Update message
 297      * @param routesNodeId NodeIdentifier
 298      */
 299     private void deleteDestinationRoutes(final DOMDataWriteTransaction tx, final YangInstanceIdentifier tablePath,
 300             final ContainerNode destination, final NodeIdentifier routesNodeId) {
 301         processDestination(tx, tablePath.node(routesNodeId), destination, null, DELETE_ROUTE);
 302     }
 303
 304     /**
 305      * Given the destination as ContainerNode, implementation needs to parse the DOM model
 306      * from this point onward:
 307      *
 308      * {@code /bgp-mp:mp-reach-nlri/bgp-mp:advertized-routes/bgp-mp:destination-type}
 309      * and put the routes to its RIBs.
 310      *
 311      * @param tx           DOMDataWriteTransaction to be passed into implementation
 312      * @param tablePath    YangInstanceIdentifier to be passed into implementation
 313      * @param destination  ContainerNode DOM representation of NLRI in Update message
 314      * @param attributes   ContainerNode to be passed into implementation
 315      * @param routesNodeId NodeIdentifier
 316      */
 317     private void putDestinationRoutes(final DOMDataWriteTransaction tx, final YangInstanceIdentifier tablePath,
 318             final ContainerNode destination, final ContainerNode attributes, final NodeIdentifier routesNodeId) {
 319         processDestination(tx, tablePath.node(routesNodeId), destination, attributes, this.putRoute);
 320     }
 321
 322     protected abstract void processDestination(DOMDataWriteTransaction tx, YangInstanceIdentifier routesPath,
 323             ContainerNode destination, ContainerNode attributes, ApplyRoute applyFunction);
 324
 325     private static ContainerNode getDestination(final DataContainerChild<? extends PathArgument, ?> routes,
 326             final NodeIdentifier destinationId) {
 327         if (routes instanceof ContainerNode) {
 328             final java.util.Optional<DataContainerChild<? extends PathArgument, ?>> maybeDestination =
 329                     ((ContainerNode) routes).getChild(DESTINATION_TYPE);
 330             if (maybeDestination.isPresent()) {
 331                 final DataContainerChild<? extends PathArgument, ?> destination = maybeDestination.get();
 332                 if (destination instanceof ChoiceNode) {
 333                     final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRet =
 334                             ((ChoiceNode) destination).getChild(destinationId);
 335                     if (maybeRet.isPresent()) {
 336                         final DataContainerChild<? extends PathArgument, ?> ret = maybeRet.get();
 337                         if (ret instanceof ContainerNode) {
 338                             return (ContainerNode) ret;
 339                         }
 340
 341                         LOG.debug("Specified node {} is not a container, ignoring it", ret);
 342                     } else {
 343                         LOG.debug("Specified container {} is not present in destination {}",
 344                                 destinationId, destination);
 345                     }
 346                 } else {
 347                     LOG.warn("Destination {} is not a choice, ignoring it", destination);
 348                 }
 349             } else {
 350                 LOG.debug("Destination is not present in routes {}", routes);
 351             }
 352         } else {
 353             LOG.warn("Advertized routes {} are not a container, ignoring it", routes);
 354         }
 355
 356         return null;
 357     }
 358
 359     @Override
 360     public final NodeIdentifier routeAttributesIdentifier() {
 361         return this.routeAttributesIdentifier;
 362     }
 363
 364     @Override
 365     public final Collection<DataTreeCandidateNode> changedRoutes(final DataTreeCandidateNode routes) {
 366         final DataTreeCandidateNode myRoutes = routes.getModifiedChild(this.routesContainerIdentifier);
 367         if (myRoutes == null) {
 368             return Collections.emptySet();
 369         }
 370         final DataTreeCandidateNode routesMap = myRoutes.getModifiedChild(routeNid());
 371         if (routesMap == null) {
 372             return Collections.emptySet();
 373         }
 374         // Well, given the remote possibility of augmentation, we should perform a filter here,
 375         // to make sure the type matches what routeType() reports.
 376         return routesMap.getChildNodes();
 377     }
 378
 379     @Override
 380     public final YangInstanceIdentifier routePath(
 381             final YangInstanceIdentifier routesTablePaths, final PathArgument routeId) {
 382         return routesYangInstanceIdentifier(routesTablePaths.node(Routes.QNAME)).node(routeId);
 383     }
 384
 385     @Override
 386     public final InstanceIdentifier<R> createRouteIdentifier(
 387             final KeyedInstanceIdentifier<Tables, TablesKey> tableIId, final I key) {
 388         //FIXME Cache
 389         return tableIId.child(routesCaseClass(), routesContainerClass()).child(routesListClass(), key);
 390     }
 391
 392     @Override
 393     public final void deleteRoutes(final DOMDataWriteTransaction tx, final YangInstanceIdentifier tablePath,
 394             final ContainerNode nlri) {
 395         deleteRoutes(tx, tablePath, nlri, ROUTES);
 396     }
 397
 398     @Override
 399     public final void putRoutes(final DOMDataWriteTransaction tx, final YangInstanceIdentifier tablePath,
 400             final ContainerNode nlri, final ContainerNode attributes) {
 401         putRoutes(tx, tablePath, nlri, attributes, ROUTES);
 402     }
 403
 404     @Override
 405     public final Update buildUpdate(final Collection<MapEntryNode> advertised, final Collection<MapEntryNode> withdrawn,
 406             final Attributes attr) {
 407         final UpdateBuilder ub = new UpdateBuilder();
 408         final AttributesBuilder ab = new AttributesBuilder(attr);
 409         final CNextHop hop = ab.getCNextHop();
 410
 411         LOG.debug("cnextHop before={}", hop);
 412         // do not preserve next hop in attributes if we are using MpReach
 413         ab.setCNextHop(null);
 414
 415         if (!advertised.isEmpty()) {
 416             final MpReachNlri mb = buildReach(advertised, hop);
 417             ab.addAugmentation(Attributes1.class, new Attributes1Builder().setMpReachNlri(mb).build());
 418             LOG.debug("mpreach nexthop={}", mb);
 419         }
 420         if (!withdrawn.isEmpty()) {
 421             final MpUnreachNlri mb = buildUnreach(withdrawn);
 422             ab.addAugmentation(Attributes2.class, new Attributes2Builder().setMpUnreachNlri(mb).build());
 423             LOG.debug("mpunrach mb={}", mb);
 424         }
 425
 426         ub.setAttributes(ab.build());
 427         LOG.debug("update {}", ub.build());
 428         return ub.build();
 429     }
 430
 431     @Override
 432     @SuppressWarnings("checkstyle:OverloadMethodsDeclarationOrder")
 433     public final void deleteRoutes(final DOMDataWriteTransaction tx, final YangInstanceIdentifier tablePath,
 434             final ContainerNode nlri, final NodeIdentifier routesNodeId) {
 435         final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes = nlri.getChild(WITHDRAWN_ROUTES);
 436         if (maybeRoutes.isPresent()) {
 437             final ContainerNode destination = getDestination(maybeRoutes.get(), destinationContainerIdentifier());
 438             if (destination != null) {
 439                 deleteDestinationRoutes(tx, tablePath, destination, routesNodeId);
 440             }
 441         } else {
 442             LOG.debug("Withdrawn routes are not present in NLRI {}", nlri);
 443         }
 444     }
 445
 446     @Override
 447     public final void putRoutes(final DOMDataWriteTransaction tx, final YangInstanceIdentifier tablePath,
 448             final ContainerNode nlri, final ContainerNode attributes, final NodeIdentifier routesNodeId) {
 449         final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes = nlri.getChild(ADVERTISED_ROUTES);
 450         if (maybeRoutes.isPresent()) {
 451             final ContainerNode destination = getDestination(maybeRoutes.get(), destinationContainerIdentifier());
 452             if (destination != null) {
 453                 putDestinationRoutes(tx, tablePath, destination, attributes, routesNodeId);
 454             }
 455         } else {
 456             LOG.debug("Advertized routes are not present in NLRI {}", nlri);
 457         }
 458     }
 459
 460     private static final class DeleteRoute implements ApplyRoute {
 461         @Override
 462         public void apply(final DOMDataWriteTransaction tx, final YangInstanceIdentifier base,
 463                 final NodeIdentifierWithPredicates routeKey, final DataContainerNode<?> route,
 464                 final ContainerNode attributes) {
 465             tx.delete(LogicalDatastoreType.OPERATIONAL, base.node(routeKey));
 466         }
 467     }
 468
 469     private final class PutRoute implements ApplyRoute {
 470         @Override
 471         public void apply(final DOMDataWriteTransaction tx, final YangInstanceIdentifier base,
 472                 final NodeIdentifierWithPredicates routeKey, final DataContainerNode<?> route,
 473                 final ContainerNode attributes) {
 474             // Build the DataContainer data
 475             final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> b =
 476                     ImmutableNodes.mapEntryBuilder();
 477             b.withNodeIdentifier(routeKey);
 478
 479             route.getValue().forEach(b::withChild);
 480             // Add attributes
 481             final DataContainerNodeAttrBuilder<NodeIdentifier, ContainerNode> cb =
 482                     Builders.containerBuilder(attributes);
 483             cb.withNodeIdentifier(routeAttributesIdentifier());
 484             b.withChild(cb.build());
 485             tx.put(LogicalDatastoreType.OPERATIONAL, base.node(routeKey), b.build());
 486         }
 487     }
 488
 489     protected final NodeIdentifier routePathIdNid() {
 490         return this.pathIdNid;
 491     }
 492
 493     protected final QName pathIdQName() {
 494         return this.pathIdQname;
 495     }
 496
 497     protected final QName routeKeyQName() {
 498         return this.routeKeyQname;
 499     }
 500
 501     protected final String extractPrefix(final DataContainerNode<? extends PathArgument> route) {
 502         return (String) route.getChild(prefixTypeNid).get().getValue();
 503     }
 504
 505     protected final RouteDistinguisher extractRouteDistinguisher(
 506             final DataContainerNode<? extends PathArgument> route) {
 507         if (route.getChild(this.rdNid).isPresent()) {
 508             return RouteDistinguisherBuilder.getDefaultInstance((String) route.getChild(this.rdNid).get().getValue());
 509         }
 510         return null;
 511     }
 512
 513     protected final YangInstanceIdentifier routesYangInstanceIdentifier(final YangInstanceIdentifier routesTablePaths) {
 514         return this.routesPath.getUnchecked(routesTablePaths);
 515     }
 516 }