org.opendaylight.protocol.bgp.inet.codec.Ipv6NlriParser Maven / Gradle / Ivy
/*
* Copyright (c) 2013, 2016 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.protocol.bgp.inet.codec;
import io.netty.buffer.ByteBuf;
import java.util.ArrayList;
import java.util.List;
import org.opendaylight.protocol.bgp.parser.BgpTableTypeImpl;
import org.opendaylight.protocol.bgp.parser.spi.MultiPathSupportUtil;
import org.opendaylight.protocol.bgp.parser.spi.NlriParser;
import org.opendaylight.protocol.bgp.parser.spi.NlriSerializer;
import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraint;
import org.opendaylight.protocol.util.Ipv6Util;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv6.prefixes.DestinationIpv6;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv6.prefixes.DestinationIpv6Builder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv6.prefixes.destination.ipv6.Ipv6Prefixes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv6.prefixes.destination.ipv6.Ipv6PrefixesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv6Case;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv6CaseBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.Attributes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.AttributesReach;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.AttributesUnreach;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.attributes.reach.MpReachNlriBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.attributes.reach.mp.reach.nlri.AdvertizedRoutes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.attributes.reach.mp.reach.nlri.AdvertizedRoutesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.attributes.unreach.MpUnreachNlriBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.attributes.unreach.mp.unreach.nlri.WithdrawnRoutes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.attributes.unreach.mp.unreach.nlri.WithdrawnRoutesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev200120.AddressFamily;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev200120.SubsequentAddressFamily;
public final class Ipv6NlriParser implements NlriParser, NlriSerializer {
private static DestinationIpv6 prefixes(final ByteBuf nlri, final PeerSpecificParserConstraint constraint,
final AddressFamily afi, final SubsequentAddressFamily safi) {
final List prefixes = new ArrayList<>();
final boolean supported = MultiPathSupportUtil.isTableTypeSupported(constraint,
new BgpTableTypeImpl(afi, safi));
while (nlri.isReadable()) {
final Ipv6PrefixesBuilder prefixesBuilder = new Ipv6PrefixesBuilder();
if (supported) {
prefixesBuilder.setPathId(PathIdUtil.readPathId(nlri));
}
prefixesBuilder.setPrefix(Ipv6Util.prefixForByteBuf(nlri));
prefixes.add(prefixesBuilder.build());
}
return new DestinationIpv6Builder().setIpv6Prefixes(prefixes).build();
}
@Override
public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder,
final PeerSpecificParserConstraint constraint) {
builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(new DestinationIpv6CaseBuilder()
.setDestinationIpv6(prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());
}
@Override
public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder,
final PeerSpecificParserConstraint constraint) {
builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder().setDestinationType(new org.opendaylight.yang.gen.v1.urn
.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update.attributes.mp.unreach.nlri.withdrawn.routes
.destination.type.DestinationIpv6CaseBuilder().setDestinationIpv6(
prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());
}
@Override
public void serializeAttribute(final Attributes pathAttributes, final ByteBuf byteAggregator) {
final AttributesReach pathAttributes1 = pathAttributes.augmentation(AttributesReach.class);
final AttributesUnreach pathAttributes2 = pathAttributes.augmentation(AttributesUnreach.class);
if (pathAttributes1 != null) {
final AdvertizedRoutes advertizedRoutes = pathAttributes1.getMpReachNlri().getAdvertizedRoutes();
if (advertizedRoutes != null && advertizedRoutes.getDestinationType() instanceof DestinationIpv6Case) {
final DestinationIpv6Case destinationIpv6Case =
(DestinationIpv6Case) advertizedRoutes.getDestinationType();
for (final Ipv6Prefixes ipv6Prefix : destinationIpv6Case.getDestinationIpv6().getIpv6Prefixes()) {
PathIdUtil.writePathId(ipv6Prefix.getPathId(), byteAggregator);
Ipv6Util.writeMinimalPrefix(ipv6Prefix.getPrefix(), byteAggregator);
}
}
} else if (pathAttributes2 != null) {
final WithdrawnRoutes withdrawnRoutes = pathAttributes2.getMpUnreachNlri().getWithdrawnRoutes();
if (withdrawnRoutes != null && withdrawnRoutes.getDestinationType() instanceof org.opendaylight.yang.gen
.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update.attributes.mp.unreach.nlri
.withdrawn.routes.destination.type.DestinationIpv6Case) {
final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update
.attributes.mp.unreach.nlri.withdrawn.routes.destination.type
.DestinationIpv6Case destinationIpv6Case =
(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update
.attributes.mp.unreach.nlri.withdrawn.routes.destination.type
.DestinationIpv6Case) withdrawnRoutes.getDestinationType();
for (final Ipv6Prefixes ipv6Prefix : destinationIpv6Case.getDestinationIpv6().getIpv6Prefixes()) {
PathIdUtil.writePathId(ipv6Prefix.getPathId(), byteAggregator);
Ipv6Util.writeMinimalPrefix(ipv6Prefix.getPrefix(), byteAggregator);
}
}
}
}
}