bgp/extensions/l3vpn/src/main/java/org/opendaylight/protocol/bgp/l3vpn/mcast/nlri/L3vpnMcastIpv6NlriHandler.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 package org.opendaylight.protocol.bgp.l3vpn.mcast.nlri;
   9
  10 import io.netty.buffer.ByteBuf;
  11 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
  12 import org.opendaylight.protocol.bgp.parser.BgpTableTypeImpl;
  13 import org.opendaylight.protocol.bgp.parser.spi.MultiPathSupportUtil;
  14 import org.opendaylight.protocol.bgp.parser.spi.NlriParser;
  15 import org.opendaylight.protocol.bgp.parser.spi.NlriSerializer;
  16 import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraint;
  17 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.DestinationL3vpnMcastIpv6AdvertizedCase;
  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.DestinationL3vpnMcastIpv6AdvertizedCaseBuilder;
  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.destination.l3vpn.mcast.ipv6.advertized._case.DestinationIpv6L3vpnMcastBuilder;
  20 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withdrawn.routes.destination.type.DestinationL3vpnMcastIpv6WithdrawnCase;
  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withdrawn.routes.destination.type.DestinationL3vpnMcastIpv6WithdrawnCaseBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.Attributes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.AttributesReach;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.AttributesUnreach;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpReachNlriBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.MpUnreachNlriBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.reach.nlri.AdvertizedRoutes;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.unreach.nlri.WithdrawnRoutes;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
  31
  32 /**
  33  * https://tools.ietf.org/html/rfc6514#section-4.
  34  *
  35  * @author Claudio D. Gasparini
  36  */
  37 public final class L3vpnMcastIpv6NlriHandler implements NlriParser, NlriSerializer {
  38     @Override
  39     public void parseNlri(
  40             final ByteBuf nlri,
  41             final MpReachNlriBuilder builder,
  42             final PeerSpecificParserConstraint constraint) throws BGPParsingException {
  43         if (!nlri.isReadable()) {
  44             return;
  45         }
  46         final boolean mPathSupported = MultiPathSupportUtil.isTableTypeSupported(constraint,
  47                 new BgpTableTypeImpl(builder.getAfi(), builder.getSafi()));
  48
  49         builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(
  50                 new DestinationL3vpnMcastIpv6AdvertizedCaseBuilder().setDestinationIpv6L3vpnMcast(
  51                         new DestinationIpv6L3vpnMcastBuilder().setL3vpnMcastDestination(
  52                                 L3vpnMcastNlriSerializer.extractDest(nlri, mPathSupported)).build()).build()).build());
  53     }
  54
  55
  56     @Override
  57     public void parseNlri(
  58             final ByteBuf nlri,
  59             final MpUnreachNlriBuilder builder,
  60             final PeerSpecificParserConstraint constraint) throws BGPParsingException {
  61         if (!nlri.isReadable()) {
  62             return;
  63         }
  64         final boolean mPathSupported = MultiPathSupportUtil.isTableTypeSupported(constraint,
  65                 new BgpTableTypeImpl(builder.getAfi(), builder.getSafi()));
  66         builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder()
  67                 .setDestinationType(new DestinationL3vpnMcastIpv6WithdrawnCaseBuilder().setDestinationIpv6L3vpnMcast(
  68                         new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.l3vpn.mcast.rev180417
  69                                 .update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.l3vpn
  70                                 .mcast.ipv6.withdrawn._case.DestinationIpv6L3vpnMcastBuilder()
  71                                 .setL3vpnMcastDestination(L3vpnMcastNlriSerializer.extractDest(nlri, mPathSupported))
  72                                 .build()).build()).build());
  73     }
  74
  75     @Override
  76     public void serializeAttribute(final Attributes pathAttributes, final ByteBuf byteAggregator) {
  77         final AttributesReach pathAttributes1 = pathAttributes.augmentation(AttributesReach.class);
  78         final AttributesUnreach pathAttributes2 = pathAttributes.augmentation(AttributesUnreach.class);
  79         if (pathAttributes1 != null) {
  80             final AdvertizedRoutes routes = pathAttributes1.getMpReachNlri().getAdvertizedRoutes();
  81             if (routes != null && routes.getDestinationType() instanceof DestinationL3vpnMcastIpv6AdvertizedCase) {
  82                 final DestinationL3vpnMcastIpv6AdvertizedCase reach
  83                         = (DestinationL3vpnMcastIpv6AdvertizedCase) routes.getDestinationType();
  84                 L3vpnMcastNlriSerializer.serializeNlri(reach.getDestinationIpv6L3vpnMcast().getL3vpnMcastDestination(),
  85                         byteAggregator);
  86             }
  87         } else if (pathAttributes2 != null) {
  88             final WithdrawnRoutes withdrawnRoutes = pathAttributes2.getMpUnreachNlri().getWithdrawnRoutes();
  89             if (withdrawnRoutes != null
  90                     && withdrawnRoutes.getDestinationType() instanceof DestinationL3vpnMcastIpv6WithdrawnCase) {
  91                 final DestinationL3vpnMcastIpv6WithdrawnCase reach
  92                         = (DestinationL3vpnMcastIpv6WithdrawnCase) withdrawnRoutes.getDestinationType();
  93                 L3vpnMcastNlriSerializer.serializeNlri(reach.getDestinationIpv6L3vpnMcast().getL3vpnMcastDestination(),
  94                         byteAggregator);
  95             }
  96         }
  97     }
  98 }