2 * Copyright (c) 2015 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.attribute.sr;
10 import com.google.common.collect.ImmutableMap;
11 import io.netty.buffer.ByteBuf;
12 import io.netty.buffer.Unpooled;
14 import org.opendaylight.protocol.util.Ipv6Util;
15 import org.opendaylight.protocol.util.MplsLabelUtil;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.SidLabelIndex;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.sid.label.index.Ipv6AddressCase;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.sid.label.index.Ipv6AddressCaseBuilder;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.sid.label.index.LocalLabelCase;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.sid.label.index.LocalLabelCaseBuilder;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.sid.label.index.SidCase;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev151014.sid.label.index.sid.label.index.SidCaseBuilder;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
26 public final class SidLabelIndexParser {
28 private static final Logger LOG = LoggerFactory.getLogger(SidLabelIndexParser.class);
30 private SidLabelIndexParser() {
31 throw new UnsupportedOperationException();
35 LABEL(3), SID(4), IPV6_ADD(16);
37 private static final Map<Integer, Size> VALUE_MAP;
39 final ImmutableMap.Builder<java.lang.Integer, Size> b = ImmutableMap.builder();
40 for (final Size enumItem : Size.values()){
41 b.put(enumItem.size, enumItem);
43 VALUE_MAP = b.build();
45 Size(final int size) {
48 static Size forValue(final int value) {
49 return VALUE_MAP.get(value);
53 static final int SID_TYPE = 1161;
55 static ByteBuf serializeSidValue(final SidLabelIndex tlv) {
56 if (tlv instanceof Ipv6AddressCase) {
57 return Ipv6Util.byteBufForAddress(((Ipv6AddressCase) tlv).getIpv6Address());
58 } else if (tlv instanceof LocalLabelCase) {
59 return MplsLabelUtil.byteBufForMplsLabel(((LocalLabelCase) tlv).getLocalLabel());
60 } else if (tlv instanceof SidCase) {
61 return Unpooled.copyInt(((SidCase) tlv).getSid().intValue());
66 static SidLabelIndex parseSidSubTlv(final ByteBuf buffer) {
67 final int type = buffer.readUnsignedShort();
68 if (type != SID_TYPE) {
69 LOG.warn("Unexpected type in SID/index/label field, expected {}, actual {}, ignoring it", SID_TYPE, type);
72 final int length = buffer.readUnsignedShort();
73 return parseSidLabelIndex(Size.forValue(length), buffer);
76 static SidLabelIndex parseSidLabelIndex(final Size length, final ByteBuf buffer) {
79 return new LocalLabelCaseBuilder().setLocalLabel(MplsLabelUtil.mplsLabelForByteBuf(buffer)).build();
81 return new SidCaseBuilder().setSid(buffer.readUnsignedInt()).build();
83 return new Ipv6AddressCaseBuilder().setIpv6Address(Ipv6Util.addressForByteBuf(buffer)).build();