2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.protocol.bgp.parser.impl.message.update;
10 import com.google.common.base.Preconditions;
11 import io.netty.buffer.ByteBuf;
12 import java.util.ArrayList;
13 import java.util.List;
14 import org.opendaylight.protocol.bgp.parser.BgpTableTypeImpl;
15 import org.opendaylight.protocol.bgp.parser.spi.MultiPathSupportUtil;
16 import org.opendaylight.protocol.bgp.parser.spi.NlriParser;
17 import org.opendaylight.protocol.bgp.parser.spi.NlriSerializer;
18 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
19 import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraint;
20 import org.opendaylight.protocol.util.ByteBufWriteUtil;
21 import org.opendaylight.protocol.util.Ipv4Util;
22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4Builder;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4CaseBuilder;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.update.message.Nlri;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlriBuilder;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
35 import org.opendaylight.yangtools.yang.binding.DataObject;
37 public final class Ipv4NlriParser implements NlriParser, NlriSerializer {
40 public void serializeAttribute(final DataObject attribute, final ByteBuf byteAggregator) {
41 Preconditions.checkArgument(attribute instanceof Nlri, "Attribute parameter is not a Nlri object.");
42 final Nlri nlri = (Nlri) attribute;
43 for (final Ipv4Prefix ipv4Prefix : nlri.getNlri()) {
44 ByteBufWriteUtil.writeMinimalPrefix(ipv4Prefix, byteAggregator);
48 private static DestinationIpv4 prefixes(final ByteBuf nlri, final PeerSpecificParserConstraint constraints,
49 final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
50 final List<Ipv4Prefixes> prefixes = new ArrayList<>();
51 while (nlri.isReadable()) {
52 final Ipv4PrefixesBuilder prefixesBuilder = new Ipv4PrefixesBuilder();
53 if (MultiPathSupportUtil.isTableTypeSupported(constraints, new BgpTableTypeImpl(afi, safi))) {
54 prefixesBuilder.setPathId(PathIdUtil.readPathId(nlri));
56 prefixesBuilder.setPrefix(Ipv4Util.prefixForByteBuf(nlri));
57 prefixes.add(prefixesBuilder.build());
59 return new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build();
63 public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder) {
64 parseNlri(nlri, builder, null);
68 public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder) {
69 parseNlri(nlri, builder, null);
73 public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder, final PeerSpecificParserConstraint constraint) {
74 builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(
75 new DestinationIpv4CaseBuilder().setDestinationIpv4(prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());
79 public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder, final PeerSpecificParserConstraint constraint) {
80 builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder().setDestinationType(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder().setDestinationIpv4(
81 prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());