bgp/l3vpn/src/main/java/org/opendaylight/protocol/bgp/l3vpn/mcast/nlri/L3vpnMcastIpv4NlriHandler.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.l3vpn.mcast.nlri;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
  13 import org.opendaylight.protocol.bgp.parser.BgpTableTypeImpl;
  14 import org.opendaylight.protocol.bgp.parser.spi.MultiPathSupportUtil;
  15 import org.opendaylight.protocol.bgp.parser.spi.NlriParser;
  16 import org.opendaylight.protocol.bgp.parser.spi.NlriSerializer;
  17 import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraint;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.l3vpn.mcast.rev180417.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationL3vpnMcastIpv4AdvertizedCase;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.l3vpn.mcast.rev180417.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationL3vpnMcastIpv4AdvertizedCaseBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.l3vpn.mcast.rev180417.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.l3vpn.mcast.ipv4.advertized._case.DestinationIpv4L3vpnMcastBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.l3vpn.mcast.rev180417.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationL3vpnMcastIpv4WithdrawnCase;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.l3vpn.mcast.rev180417.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationL3vpnMcastIpv4WithdrawnCaseBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.Attributes1;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.Attributes2;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpReachNlriBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpUnreachNlriBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.reach.nlri.AdvertizedRoutes;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.unreach.nlri.WithdrawnRoutes;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
  32
  33 /**
  34  * https://tools.ietf.org/html/rfc6514#section-4.
  35  *
  36  * @author Claudio D. Gasparini
  37  */
  38 public final class L3vpnMcastIpv4NlriHandler implements NlriParser, NlriSerializer {
  39     @Override
  40     public void parseNlri(
  41             final ByteBuf nlri,
  42             final MpReachNlriBuilder builder,
  43             final PeerSpecificParserConstraint constraint) throws BGPParsingException {
  44         if (!nlri.isReadable()) {
  45             return;
  46         }
  47         final boolean mPathSupported = MultiPathSupportUtil.isTableTypeSupported(constraint,
  48                 new BgpTableTypeImpl(builder.getAfi(), builder.getSafi()));
  49         builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder()
  50                 .setDestinationType(new DestinationL3vpnMcastIpv4AdvertizedCaseBuilder()
  51                         .setDestinationIpv4L3vpnMcast(new DestinationIpv4L3vpnMcastBuilder()
  52                                 .setL3vpnMcastDestination(L3vpnMcastNlriSerializer.extractDest(nlri, mPathSupported))
  53                                 .build()).build()).build());
  54     }
  55
  56
  57     @Override
  58     public void parseNlri(
  59             final ByteBuf nlri,
  60             final MpUnreachNlriBuilder builder,
  61             final PeerSpecificParserConstraint constraint) throws BGPParsingException {
  62         if (!nlri.isReadable()) {
  63             return;
  64         }
  65         final boolean mPathSupported = MultiPathSupportUtil.isTableTypeSupported(constraint,
  66                 new BgpTableTypeImpl(builder.getAfi(), builder.getSafi()));
  67         builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder()
  68                 .setDestinationType(new DestinationL3vpnMcastIpv4WithdrawnCaseBuilder().setDestinationIpv4L3vpnMcast(
  69                         new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.l3vpn.mcast.rev180417
  70                                 .update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.l3vpn
  71                                 .mcast.ipv4.withdrawn._case.DestinationIpv4L3vpnMcastBuilder()
  72                                 .setL3vpnMcastDestination(L3vpnMcastNlriSerializer.extractDest(nlri, mPathSupported))
  73                                 .build()).build()).build());
  74     }
  75
  76     @Override
  77     public void serializeAttribute(final Attributes pathAttributes, final ByteBuf byteAggregator) {
  78         final Attributes1 pathAttributes1 = pathAttributes.augmentation(Attributes1.class);
  79         final Attributes2 pathAttributes2 = pathAttributes.augmentation(Attributes2.class);
  80         if (pathAttributes1 != null) {
  81             final AdvertizedRoutes routes = pathAttributes1.getMpReachNlri().getAdvertizedRoutes();
  82             if (routes != null && routes.getDestinationType() instanceof DestinationL3vpnMcastIpv4AdvertizedCase) {
  83                 final DestinationL3vpnMcastIpv4AdvertizedCase reach
  84                         = (DestinationL3vpnMcastIpv4AdvertizedCase) routes.getDestinationType();
  85                 L3vpnMcastNlriSerializer.serializeNlri(reach.getDestinationIpv4L3vpnMcast().getL3vpnMcastDestination(),
  86                         byteAggregator);
  87             }
  88         } else if (pathAttributes2 != null) {
  89             final WithdrawnRoutes withdrawnRoutes = pathAttributes2.getMpUnreachNlri().getWithdrawnRoutes();
  90             if (withdrawnRoutes != null
  91                     && withdrawnRoutes.getDestinationType() instanceof DestinationL3vpnMcastIpv4WithdrawnCase) {
  92                 final DestinationL3vpnMcastIpv4WithdrawnCase reach
  93                         = (DestinationL3vpnMcastIpv4WithdrawnCase) withdrawnRoutes.getDestinationType();
  94                 L3vpnMcastNlriSerializer.serializeNlri(reach.getDestinationIpv4L3vpnMcast().getL3vpnMcastDestination(),
  95                         byteAggregator);
  96             }
  97         }
  98     }
  99 }