bgp/extensions/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/impl/LinkstateRIBSupport.java

   1 /*
   2  * Copyright (c) 2016 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.impl;
   9
  10 import static com.google.common.base.Verify.verify;
  11
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Optional;
  20 import java.util.stream.Collectors;
  21 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  22 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
  23 import org.opendaylight.protocol.bgp.linkstate.impl.nlri.LinkstateNlriParser;
  24 import org.opendaylight.protocol.bgp.linkstate.spi.pojo.SimpleNlriTypeRegistry;
  25 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
  26 import org.opendaylight.protocol.bgp.rib.spi.AbstractRIBSupport;
  27 import org.opendaylight.protocol.util.ByteArray;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.LinkstateAddressFamily;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.LinkstateSubsequentAddressFamily;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.bgp.rib.rib.loc.rib.tables.routes.LinkstateRoutesCase;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.destination.CLinkstateDestination;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.routes.LinkstateRoutes;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.routes.LinkstateRoutesBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.routes.linkstate.routes.LinkstateRoute;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.routes.linkstate.routes.LinkstateRouteBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.routes.linkstate.routes.LinkstateRouteKey;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationLinkstateCaseBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.linkstate._case.DestinationLinkstate;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.linkstate._case.DestinationLinkstateBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.PathId;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.Attributes;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.destination.DestinationType;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  44 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  45 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  46 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  47 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  48 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  49 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  50 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  51 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54
  55 public final class LinkstateRIBSupport
  56         extends AbstractRIBSupport<LinkstateRoutesCase, LinkstateRoutes, LinkstateRoute, LinkstateRouteKey> {
  57     private static final Logger LOG = LoggerFactory.getLogger(LinkstateRIBSupport.class);
  58
  59     private static final LinkstateRoutes EMPTY_CONTAINER
  60             = new LinkstateRoutesBuilder().setLinkstateRoute(Collections.emptyList()).build();
  61     private static LinkstateRIBSupport SINGLETON;
  62     private final YangInstanceIdentifier.NodeIdentifier nlriRoutesList
  63             = new YangInstanceIdentifier.NodeIdentifier(CLinkstateDestination.QNAME);
  64
  65     private LinkstateRIBSupport(final BindingNormalizedNodeSerializer mappingService) {
  66         super(
  67                 mappingService,
  68                 LinkstateRoutesCase.class,
  69                 LinkstateRoutes.class,
  70                 LinkstateRoute.class,
  71                 LinkstateAddressFamily.class,
  72                 LinkstateSubsequentAddressFamily.class,
  73                 DestinationLinkstate.QNAME);
  74     }
  75
  76     public static synchronized LinkstateRIBSupport getInstance(final BindingNormalizedNodeSerializer mappingService) {
  77         if (SINGLETON == null) {
  78             SINGLETON = new LinkstateRIBSupport(mappingService);
  79         }
  80         return SINGLETON;
  81     }
  82
  83     private NodeIdentifierWithPredicates createRouteKey(final UnkeyedListEntryNode linkstate) {
  84         final ByteBuf buffer = Unpooled.buffer();
  85         final CLinkstateDestination cLinkstateDestination = LinkstateNlriParser.extractLinkstateDestination(linkstate);
  86         SimpleNlriTypeRegistry.getInstance().serializeNlriType(cLinkstateDestination, buffer);
  87         final Optional<DataContainerChild<? extends PathArgument, ?>> maybePathIdLeaf =
  88                 linkstate.getChild(routePathIdNid());
  89         return PathIdUtil.createNidKey(routeQName(), routeKeyTemplate(),
  90                 ByteArray.encodeBase64(buffer), maybePathIdLeaf);
  91     }
  92
  93     private static List<CLinkstateDestination> extractRoutes(final Collection<MapEntryNode> routes) {
  94         return routes.stream().map(LinkstateNlriParser::extractLinkstateDestination).collect(Collectors.toList());
  95     }
  96
  97     @Override
  98     protected Collection<NodeIdentifierWithPredicates> processDestination(final DOMDataTreeWriteTransaction tx,
  99                                                                           final YangInstanceIdentifier routesPath,
 100                                                                           final ContainerNode destination,
 101                                                                           final ContainerNode attributes,
 102                                                                           final ApplyRoute function) {
 103         if (destination != null) {
 104             final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes
 105                     = destination.getChild(this.nlriRoutesList);
 106             return processRoute(maybeRoutes, routesPath, attributes, function, tx);
 107         }
 108         return Collections.emptyList();
 109     }
 110
 111     private List<NodeIdentifierWithPredicates> processRoute(
 112             final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes,
 113             final YangInstanceIdentifier routesPath,
 114             final ContainerNode attributes, final ApplyRoute function, final DOMDataTreeWriteTransaction tx) {
 115         if (maybeRoutes.isPresent()) {
 116             final DataContainerChild<? extends PathArgument, ?> routes = maybeRoutes.get();
 117             if (routes instanceof UnkeyedListNode) {
 118                 final YangInstanceIdentifier base = routesYangInstanceIdentifier(routesPath);
 119                 final Collection<UnkeyedListEntryNode> routesList = ((UnkeyedListNode) routes).getValue();
 120                 final List<NodeIdentifierWithPredicates> keys = new ArrayList<>(routesList.size());
 121                 for (final UnkeyedListEntryNode linkstateDest : routesList) {
 122                     final NodeIdentifierWithPredicates routeKey = createRouteKey(linkstateDest);
 123                     function.apply(tx, base, routeKey, linkstateDest, attributes);
 124                     keys.add(routeKey);
 125                 }
 126                 return keys;
 127             }
 128             LOG.warn("Routes {} are not a map", routes);
 129         }
 130         return Collections.emptyList();
 131     }
 132
 133     @Override
 134     protected DestinationType buildDestination(final Collection<MapEntryNode> routes) {
 135         return new DestinationLinkstateCaseBuilder().setDestinationLinkstate(
 136                 new DestinationLinkstateBuilder().setCLinkstateDestination(extractRoutes(routes)).build()).build();
 137     }
 138
 139     @Override
 140     protected DestinationType buildWithdrawnDestination(final Collection<MapEntryNode> routes) {
 141         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.update
 142                 .attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationLinkstateCaseBuilder()
 143                 .setDestinationLinkstate(
 144                     new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120
 145                         .update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type
 146                         .destination.linkstate._case.DestinationLinkstateBuilder()
 147                         .setCLinkstateDestination(extractRoutes(routes)).build())
 148                 .build();
 149     }
 150
 151     @Override
 152     public LinkstateRoute createRoute(final LinkstateRoute route, final LinkstateRouteKey key,
 153             final Attributes attributes) {
 154         final LinkstateRouteBuilder builder;
 155         if (route != null) {
 156             builder = new LinkstateRouteBuilder(route);
 157         } else {
 158             builder = new LinkstateRouteBuilder();
 159         }
 160         return builder.withKey(key).setAttributes(attributes).build();
 161     }
 162
 163     @Override
 164     public LinkstateRoutes emptyRoutesContainer() {
 165         return EMPTY_CONTAINER;
 166     }
 167
 168     @Override
 169     public LinkstateRouteKey createRouteListKey(final PathId pathId, final String routeKey) {
 170         return new LinkstateRouteKey(pathId, routeKey);
 171     }
 172
 173     @Override
 174     public PathId extractPathId(final LinkstateRouteKey routeListKey) {
 175         return routeListKey.getPathId();
 176     }
 177
 178     @Override
 179     public String extractRouteKey(final LinkstateRouteKey routeListKey) {
 180         return routeListKey.getRouteKey();
 181     }
 182
 183     @Override
 184     public Map<LinkstateRouteKey, LinkstateRoute> extractAdjRibInRoutes(final Routes routes) {
 185         verify(
 186             routes instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120
 187                 .bgp.rib.rib.peer.adj.rib.in.tables.routes.LinkstateRoutesCase, "Unrecognized routes %s", routes);
 188         return ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120
 189                 .bgp.rib.rib.peer.adj.rib.in.tables.routes.LinkstateRoutesCase) routes).getLinkstateRoutes()
 190                 .nonnullLinkstateRoute();
 191     }
 192 }