2 * Copyright (c) 2013, 2016 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
9 package org.opendaylight.protocol.bgp.inet.codec;
11 import com.google.common.base.Preconditions;
12 import io.netty.buffer.ByteBuf;
13 import java.util.ArrayList;
14 import java.util.List;
15 import org.opendaylight.protocol.bgp.parser.BgpTableTypeImpl;
16 import org.opendaylight.protocol.bgp.parser.spi.MultiPathSupportUtil;
17 import org.opendaylight.protocol.bgp.parser.spi.NlriParser;
18 import org.opendaylight.protocol.bgp.parser.spi.NlriSerializer;
19 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
20 import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraint;
21 import org.opendaylight.protocol.util.ByteBufWriteUtil;
22 import org.opendaylight.protocol.util.Ipv4Util;
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.DestinationIpv4Case;
28 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;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes1;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes2;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlriBuilder;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutes;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutes;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
40 import org.opendaylight.yangtools.yang.binding.DataObject;
42 public final class Ipv4NlriParser implements NlriParser, NlriSerializer {
44 private static DestinationIpv4 prefixes(final ByteBuf nlri, final PeerSpecificParserConstraint constraints,
45 final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
46 final List<Ipv4Prefixes> prefixes = new ArrayList<>();
47 while (nlri.isReadable()) {
48 final Ipv4PrefixesBuilder prefixesBuilder = new Ipv4PrefixesBuilder();
49 if (MultiPathSupportUtil.isTableTypeSupported(constraints, new BgpTableTypeImpl(afi, safi))) {
50 prefixesBuilder.setPathId(PathIdUtil.readPathId(nlri));
52 prefixesBuilder.setPrefix(Ipv4Util.prefixForByteBuf(nlri));
53 prefixes.add(prefixesBuilder.build());
55 return new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build();
59 public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder) {
60 parseNlri(nlri, builder, null);
64 public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder) {
65 parseNlri(nlri, builder, null);
69 public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder, final PeerSpecificParserConstraint constraint) {
70 builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(
71 new DestinationIpv4CaseBuilder().setDestinationIpv4(prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());
75 public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder, final PeerSpecificParserConstraint constraint) {
76 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(
77 prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());
81 public void serializeAttribute(final DataObject attribute, final ByteBuf byteAggregator) {
82 Preconditions.checkArgument(attribute instanceof Attributes, "Attribute parameter is not a PathAttribute object.");
83 final Attributes pathAttributes = (Attributes) attribute;
84 final Attributes1 pathAttributes1 = pathAttributes.getAugmentation(Attributes1.class);
85 final Attributes2 pathAttributes2 = pathAttributes.getAugmentation(Attributes2.class);
86 if (pathAttributes1 != null) {
87 final AdvertizedRoutes advertizedRoutes = pathAttributes1.getMpReachNlri().getAdvertizedRoutes();
88 if (advertizedRoutes != null && advertizedRoutes.getDestinationType() instanceof DestinationIpv4Case) {
89 final DestinationIpv4Case destinationIpv4Case = (DestinationIpv4Case) advertizedRoutes.getDestinationType();
90 for (final Ipv4Prefixes ipv4Prefix : destinationIpv4Case.getDestinationIpv4().getIpv4Prefixes()) {
91 PathIdUtil.writePathId(ipv4Prefix.getPathId(), byteAggregator);
92 ByteBufWriteUtil.writeMinimalPrefix(ipv4Prefix.getPrefix(), byteAggregator);
95 } else if (pathAttributes2 != null) {
96 final WithdrawnRoutes withdrawnRoutes = pathAttributes2.getMpUnreachNlri().getWithdrawnRoutes();
97 if (withdrawnRoutes != null && withdrawnRoutes.getDestinationType() instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4Case) {
98 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4Case destinationIpv4Case =
99 (org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4Case) withdrawnRoutes.getDestinationType();
100 for (final Ipv4Prefixes ipv4Prefix : destinationIpv4Case.getDestinationIpv4().getIpv4Prefixes()) {
101 PathIdUtil.writePathId(ipv4Prefix.getPathId(), byteAggregator);
102 ByteBufWriteUtil.writeMinimalPrefix(ipv4Prefix.getPrefix(), byteAggregator);