bgp/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 com.google.common.collect.ImmutableCollection;
  11 import com.google.common.collect.ImmutableSet;
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14 import java.util.Collection;
  15 import java.util.Collections;
  16 import java.util.List;
  17 import java.util.Optional;
  18 import java.util.stream.Collectors;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  20 import org.opendaylight.protocol.bgp.linkstate.impl.nlri.LinkstateNlriParser;
  21 import org.opendaylight.protocol.bgp.linkstate.spi.pojo.SimpleNlriTypeRegistry;
  22 import org.opendaylight.protocol.bgp.rib.spi.AbstractRIBSupport;
  23 import org.opendaylight.protocol.util.ByteArray;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.LinkstateAddressFamily;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.LinkstateSubsequentAddressFamily;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.bgp.rib.rib.loc.rib.tables.routes.LinkstateRoutesCase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.linkstate.destination.CLinkstateDestination;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.linkstate.routes.LinkstateRoutes;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.linkstate.routes.linkstate.routes.LinkstateRoute;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.linkstate.routes.linkstate.routes.LinkstateRouteBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.linkstate.routes.linkstate.routes.LinkstateRouteKey;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationLinkstateCaseBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.linkstate._case.DestinationLinkstate;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.linkstate._case.DestinationLinkstateBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.PathId;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.Attributes;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev171207.destination.DestinationType;
  38 import org.opendaylight.yangtools.yang.binding.DataObject;
  39 import org.opendaylight.yangtools.yang.common.QName;
  40 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  41 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  42 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  43 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  44 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  45 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  46 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  47 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  48 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  49 import org.slf4j.Logger;
  50 import org.slf4j.LoggerFactory;
  51
  52 public final class LinkstateRIBSupport extends AbstractRIBSupport<org.opendaylight.yang.gen.v1.urn.opendaylight.params
  53         .xml.ns.yang.bgp.linkstate.rev171207.bgp.rib.rib.peer.adj.rib.in.tables.routes.LinkstateRoutesCase,
  54         LinkstateRoute, LinkstateRouteKey> {
  55     private static final Logger LOG = LoggerFactory.getLogger(LinkstateRIBSupport.class);
  56     private static final QName ROUTE_KEY_QNAME = QName.create(LinkstateRoute.QNAME, ROUTE_KEY).intern();
  57     private static final LinkstateRIBSupport SINGLETON = new LinkstateRIBSupport();
  58     private final NodeIdentifier route = new NodeIdentifier(LinkstateRoute.QNAME);
  59     private final NodeIdentifier nlriRoutesList = new NodeIdentifier(CLinkstateDestination.QNAME);
  60
  61     private LinkstateRIBSupport() {
  62         super(LinkstateRoutesCase.class, LinkstateRoutes.class, LinkstateRoute.class, LinkstateAddressFamily.class,
  63                 LinkstateSubsequentAddressFamily.class, DestinationLinkstate.QNAME);
  64     }
  65
  66     public static LinkstateRIBSupport getInstance() {
  67         return SINGLETON;
  68     }
  69
  70     @Override
  71     public ImmutableCollection<Class<? extends DataObject>> cacheableAttributeObjects() {
  72         return ImmutableSet.of();
  73     }
  74
  75     @Override
  76     public ImmutableCollection<Class<? extends DataObject>> cacheableNlriObjects() {
  77         return ImmutableSet.of();
  78     }
  79
  80     @Override
  81     public boolean isComplexRoute() {
  82         return true;
  83     }
  84
  85     @Override
  86     protected void processDestination(final DOMDataWriteTransaction tx, final YangInstanceIdentifier routesPath,
  87         final ContainerNode destination, final ContainerNode attributes, final ApplyRoute function) {
  88         if (destination != null) {
  89             final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes
  90                     = destination.getChild(this.nlriRoutesList);
  91             processRoute(maybeRoutes, routesPath, attributes, function, tx);
  92         }
  93     }
  94
  95     private void processRoute(final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes,
  96             final YangInstanceIdentifier routesPath,
  97         final ContainerNode attributes, final ApplyRoute function, final DOMDataWriteTransaction tx) {
  98         if (maybeRoutes.isPresent()) {
  99             final DataContainerChild<? extends PathArgument, ?> routes = maybeRoutes.get();
 100             if (routes instanceof UnkeyedListNode) {
 101                 final YangInstanceIdentifier base = routesPath.node(routesContainerIdentifier()).node(this.route);
 102                 for (final UnkeyedListEntryNode e : ((UnkeyedListNode) routes).getValue()) {
 103                     final NodeIdentifierWithPredicates routeKey = createRouteKey(e);
 104                     function.apply(tx, base, routeKey, e, attributes);
 105                 }
 106             } else {
 107                 LOG.warn("Routes {} are not a map", routes);
 108             }
 109         }
 110     }
 111
 112     private static NodeIdentifierWithPredicates createRouteKey(final UnkeyedListEntryNode linkstate) {
 113         final ByteBuf buffer = Unpooled.buffer();
 114         final CLinkstateDestination cLinkstateDestination = LinkstateNlriParser.extractLinkstateDestination(linkstate);
 115         SimpleNlriTypeRegistry.getInstance().serializeNlriType(cLinkstateDestination, buffer);
 116
 117         return new NodeIdentifierWithPredicates(LinkstateRoute.QNAME, ROUTE_KEY_QNAME, ByteArray.readAllBytes(buffer));
 118     }
 119
 120     @Override
 121     protected DestinationType buildDestination(final Collection<MapEntryNode> routes) {
 122         return new DestinationLinkstateCaseBuilder().setDestinationLinkstate(
 123             new DestinationLinkstateBuilder().setCLinkstateDestination(extractRoutes(routes)).build()).build();
 124     }
 125
 126     @Override
 127     protected DestinationType buildWithdrawnDestination(final Collection<MapEntryNode> routes) {
 128         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev171207.update
 129                 .attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationLinkstateCaseBuilder()
 130                 .setDestinationLinkstate(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp
 131                         .linkstate.rev171207.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type
 132                         .destination.linkstate._case.DestinationLinkstateBuilder()
 133                         .setCLinkstateDestination(extractRoutes(routes)).build()).build();
 134     }
 135
 136     private static List<CLinkstateDestination> extractRoutes(final Collection<MapEntryNode> routes) {
 137         return routes.stream().map(LinkstateNlriParser::extractLinkstateDestination).collect(Collectors.toList());
 138     }
 139
 140     @Override
 141     public LinkstateRouteKey extractRouteKey(final LinkstateRoute route) {
 142         return route.getKey();
 143     }
 144
 145     @Override
 146     public LinkstateRoute createRoute(
 147             final LinkstateRoute route,
 148             final LinkstateRouteKey routeKey,
 149             final PathId pathId,
 150             final Attributes attributes) {
 151         final LinkstateRouteBuilder builder;
 152         if (route != null) {
 153             builder = new LinkstateRouteBuilder(route);
 154         } else {
 155             builder = new LinkstateRouteBuilder();
 156         }
 157         return builder.setRouteKey(routeKey.getRouteKey()).setAttributes(attributes).build();
 158     }
 159
 160     @Override
 161     public Collection<LinkstateRoute> changedRoutes(final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns
 162             .yang.bgp.linkstate.rev171207.bgp.rib.rib.peer.adj.rib.in.tables.routes.LinkstateRoutesCase routes) {
 163         final LinkstateRoutes routeCont = routes.getLinkstateRoutes();
 164         if (routeCont == null) {
 165             return Collections.emptyList();
 166         }
 167         return routeCont.getLinkstateRoute();
 168     }
 169 }