2 * Copyright (c) 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
8 package org.opendaylight.protocol.bgp.linkstate.impl.attribute.sr.binding.sid.sub.tlvs;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.Unpooled;
14 import org.opendaylight.protocol.bgp.linkstate.spi.BindingSubTlvsParser;
15 import org.opendaylight.protocol.bgp.linkstate.spi.BindingSubTlvsSerializer;
16 import org.opendaylight.protocol.bgp.linkstate.spi.TlvUtil;
17 import org.opendaylight.protocol.util.BitArray;
18 import org.opendaylight.protocol.util.Ipv4Util;
19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.ProtocolId;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.BindingSubTlv;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.binding.sub.tlv.Ipv4EroBackupCase;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.binding.sub.tlv.Ipv4EroBackupCaseBuilder;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.binding.sub.tlv.Ipv4EroCase;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.binding.sub.tlv.Ipv4EroCaseBuilder;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.binding.sub.tlv.ipv4.ero._case.Ipv4Ero;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.binding.sub.tlv.ipv4.ero._case.Ipv4EroBuilder;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.binding.sub.tlvs.binding.sub.tlv.ipv4.ero.backup._case.Ipv4EroBackupBuilder;
30 public final class Ipv4EroParser implements BindingSubTlvsParser, BindingSubTlvsSerializer {
31 private static final int ERO_IPV4 = 1163;
32 static final int FLAGS_SIZE = 8;
33 static final int LOOSE = 0;
34 static final int RESERVED_ERO = 3;
37 public BindingSubTlv parseSubTlv(final ByteBuf slice, final ProtocolId protocolId) {
38 return parseIpv4EroCase(slice);
42 public int getType() {
47 public void serializeSubTlv(final BindingSubTlv bindingSubTlv, final ByteBuf aggregator) {
48 checkArgument(bindingSubTlv instanceof Ipv4EroCase, "Wrong BindingSubTlv instance expected",
50 final Ipv4Ero ipv4Ero = ((Ipv4EroCase) bindingSubTlv).getIpv4Ero();
51 TlvUtil.writeTLV(getType(), serializeIpv4EroCase(ipv4Ero.isLoose(), ipv4Ero.getAddress()), aggregator);
54 static Ipv4EroCase parseIpv4EroCase(final ByteBuf buffer) {
55 final Ipv4EroBuilder builder = new Ipv4EroBuilder();
56 final BitArray flags = BitArray.valueOf(buffer, FLAGS_SIZE);
57 builder.setLoose(flags.get(LOOSE));
58 buffer.skipBytes(RESERVED_ERO);
59 builder.setAddress(Ipv4Util.addressForByteBuf(buffer));
60 return new Ipv4EroCaseBuilder().setIpv4Ero(builder.build()).build();
63 static Ipv4EroBackupCase parseIpv4EroBackupCase(final ByteBuf buffer) {
64 final Ipv4EroBackupBuilder builder = new Ipv4EroBackupBuilder();
65 final BitArray flags = BitArray.valueOf(buffer, FLAGS_SIZE);
66 builder.setLoose(flags.get(LOOSE));
67 buffer.skipBytes(RESERVED_ERO);
68 builder.setAddress(Ipv4Util.addressForByteBuf(buffer));
69 return new Ipv4EroBackupCaseBuilder().setIpv4EroBackup(builder.build()).build();
72 static ByteBuf serializeIpv4EroCase(final Boolean loose, final Ipv4Address address) {
73 final ByteBuf buffer = Unpooled.buffer();
74 serializeEroFlags(buffer, loose);
75 buffer.writeBytes(Ipv4Util.byteBufForAddress(address));
79 static void serializeEroFlags(final ByteBuf buffer, final Boolean loose) {
80 final BitArray flags = new BitArray(FLAGS_SIZE);
81 flags.set(LOOSE, loose);
82 flags.toByteBuf(buffer);
83 buffer.writeZero(RESERVED_ERO);