bgp/mvpn/src/main/java/org/opendaylight/protocol/bgp/mvpn/impl/MvpnIpv4RIBSupport.java

   1 /*
   2  * Copyright (c) 2018 AT&T Intellectual Property. 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
   9 package org.opendaylight.protocol.bgp.mvpn.impl;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import io.netty.buffer.Unpooled;
  13 import java.util.Collection;
  14 import java.util.Collections;
  15 import java.util.List;
  16 import java.util.Optional;
  17 import java.util.stream.Collectors;
  18 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  19 import org.opendaylight.protocol.bgp.mvpn.impl.nlri.Ipv4NlriHandler;
  20 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
  21 import org.opendaylight.protocol.util.ByteArray;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.destination.DestinationType;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.MvpnDestination;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.bgp.rib.rib.loc.rib.tables.routes.MvpnRoutesIpv4Case;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.bgp.rib.rib.loc.rib.tables.routes.MvpnRoutesIpv4CaseBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.mvpn.destination.MvpnDestinationBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.mvpn.routes.ipv4.MvpnRoutesIpv4;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.mvpn.routes.ipv4.MvpnRoutesIpv4Builder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationMvpnIpv4AdvertizedCaseBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.mvpn.ipv4.advertized._case.DestinationMvpn;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.mvpn.ipv4.advertized._case.DestinationMvpnBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationMvpnIpv4WithdrawnCaseBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.Ipv4AddressFamily;
  34 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  35 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  36 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  37 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
  38 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  39 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  40
  41 /**
  42  * Ipv4 Mvpn RIBSupport.
  43  *
  44  * @author Claudio D. Gasparini
  45  */
  46 final class MvpnIpv4RIBSupport extends AbstractMvpnRIBSupport<MvpnRoutesIpv4Case, MvpnRoutesIpv4> {
  47     private static final MvpnRoutesIpv4 EMPTY_CONTAINER
  48             = new MvpnRoutesIpv4Builder().setMvpnRoute(Collections.emptyList()).build();
  49     private static final MvpnRoutesIpv4Case EMPTY_CASE
  50             = new MvpnRoutesIpv4CaseBuilder().setMvpnRoutesIpv4(EMPTY_CONTAINER).build();
  51     private static MvpnIpv4RIBSupport SINGLETON;
  52
  53     private MvpnIpv4RIBSupport(final BindingNormalizedNodeSerializer mappingService) {
  54         super(mappingService,
  55                 MvpnRoutesIpv4Case.class,
  56                 MvpnRoutesIpv4.class,
  57                 Ipv4AddressFamily.class,
  58                 DestinationMvpn.QNAME,
  59                 MvpnDestination.QNAME);
  60     }
  61
  62     static synchronized MvpnIpv4RIBSupport getInstance(final BindingNormalizedNodeSerializer mappingService) {
  63         if (SINGLETON == null) {
  64             SINGLETON = new MvpnIpv4RIBSupport(mappingService);
  65         }
  66         return SINGLETON;
  67     }
  68
  69     private List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.mvpn
  70             .destination.MvpnDestination> extractRoutes(final Collection<MapEntryNode> routes) {
  71         return routes.stream().map(this::extractDestinations).collect(Collectors.toList());
  72     }
  73
  74     private org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.mvpn
  75             .destination.MvpnDestination extractDestinations(final DataContainerNode<? extends PathArgument> mvpnDest) {
  76         return new MvpnDestinationBuilder()
  77                 .setMvpnChoice(extractMvpnChoice(mvpnDest))
  78                 .setPathId(PathIdUtil.buildPathId(mvpnDest, routePathIdNid()))
  79                 .build();
  80     }
  81
  82     @Override
  83     protected DestinationType buildDestination(final Collection<MapEntryNode> routes) {
  84         return new DestinationMvpnIpv4AdvertizedCaseBuilder().setDestinationMvpn(
  85                 new DestinationMvpnBuilder().setMvpnDestination(extractRoutes(routes)).build()).build();
  86     }
  87
  88     @Override
  89     protected DestinationType buildWithdrawnDestination(final Collection<MapEntryNode> routes) {
  90         return new DestinationMvpnIpv4WithdrawnCaseBuilder().setDestinationMvpn(
  91                 new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.update
  92                         .attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.mvpn.ipv4.withdrawn
  93                         ._case.DestinationMvpnBuilder().setMvpnDestination(extractRoutes(routes)).build()).build();
  94     }
  95
  96     @Override
  97     public MvpnRoutesIpv4Case emptyRoutesCase() {
  98         return EMPTY_CASE;
  99     }
 100
 101     @Override
 102     public MvpnRoutesIpv4 emptyRoutesContainer() {
 103         return EMPTY_CONTAINER;
 104     }
 105
 106     @Override
 107     public NodeIdentifierWithPredicates createRouteKey(final UnkeyedListEntryNode mvpn) {
 108         final ByteBuf buffer = Unpooled.buffer();
 109         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.mvpn.ipv4.rev180417.mvpn.destination
 110                 .MvpnDestination dest = extractDestinations(mvpn);
 111         Ipv4NlriHandler.serializeNlri(Collections.singletonList(dest), buffer);
 112         final Optional<DataContainerChild<? extends PathArgument, ?>> maybePathIdLeaf =
 113                 mvpn.getChild(routePathIdNid());
 114         return PathIdUtil.createNidKey(routeQName(), routeKeyQName(),
 115                 pathIdQName(), ByteArray.encodeBase64(buffer), maybePathIdLeaf);
 116     }
 117 }