2 * Copyright (c) 2014 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 io.netty.buffer.ByteBuf;
11 import io.netty.buffer.Unpooled;
12 import org.opendaylight.protocol.bgp.linkstate.spi.TlvUtil;
13 import org.opendaylight.protocol.util.BitArray;
14 import org.opendaylight.protocol.util.ByteArray;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.link.state.SrLanAdjId;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.link.state.SrLanAdjIdBuilder;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.AdjacencyFlags;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.AdjacencySegmentIdentifier;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.SidLabel;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.Weight;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125.IsoSystemIdentifier;
22 import org.opendaylight.yangtools.yang.binding.DataContainer;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
26 public final class SrLinkAttributesParser {
27 private static final Logger LOG = LoggerFactory.getLogger(SrLinkAttributesParser.class);
29 private static final int ISO_SYSTEM_ID_SIZE = 6;
32 private static final int ADDRESS_FAMILY_FLAG = 0;
33 private static final int BACKUP_FLAG = 1;
34 private static final int VALUE_FLAG = 2;
35 private static final int LOCAL_FLAG = 3;
36 private static final int SET_FLAG = 4;
37 private static final int FLAGS_SIZE = 8;
38 private static final int SID_TYPE = 1;
40 private SrLinkAttributesParser() {
41 throw new UnsupportedOperationException();
44 public static AdjacencySegmentIdentifier parseAdjacencySegmentIdentifier(final ByteBuf buffer) {
45 final AdjacencyFlags adjFlags;
47 final SidLabel sidValue;
48 if (buffer.isReadable()) {
49 final BitArray flags = BitArray.valueOf(buffer, FLAGS_SIZE);
50 adjFlags = new AdjacencyFlags(flags.get(ADDRESS_FAMILY_FLAG), flags.get(BACKUP_FLAG), flags.get(LOCAL_FLAG), flags.get(SET_FLAG), flags.get(VALUE_FLAG));
51 weight = new Weight(buffer.readUnsignedByte());
52 sidValue = parseSidSubTlv(buffer);
58 return new AdjacencySegmentIdentifier() {
61 public Class<? extends DataContainer> getImplementedInterface() {
62 return AdjacencySegmentIdentifier.class;
66 public Weight getWeight() {
71 public SidLabel getSid() {
76 public AdjacencyFlags getFlags() {
82 public static ByteBuf serializeAdjacencySegmentIdentifier(final AdjacencySegmentIdentifier srAdjId) {
83 final ByteBuf value = Unpooled.buffer();
84 final AdjacencyFlags srAdjIdFlags = srAdjId.getFlags();
85 final BitArray flags = new BitArray(FLAGS_SIZE);
86 flags.set(ADDRESS_FAMILY_FLAG, srAdjIdFlags.isAddressFamily());
87 flags.set(BACKUP_FLAG, srAdjIdFlags.isBackup());
88 flags.set(VALUE_FLAG, srAdjIdFlags.isValue());
89 flags.set(LOCAL_FLAG, srAdjIdFlags.isLocal());
90 flags.set(SET_FLAG, srAdjIdFlags.isSetFlag());
91 flags.toByteBuf(value);
92 value.writeByte(srAdjId.getWeight().getValue());
93 TlvUtil.writeSrTLV(SID_TYPE, Unpooled.wrappedBuffer(srAdjId.getSid().getValue()), value);
97 public static SrLanAdjId parseLanAdjacencySegmentIdentifier(final ByteBuf buffer) {
98 if (!buffer.isReadable()) {
99 return new SrLanAdjIdBuilder().build();
101 final SrLanAdjIdBuilder srLanAdjIdBuilder = new SrLanAdjIdBuilder();
102 final BitArray flags = BitArray.valueOf(buffer, FLAGS_SIZE);
103 srLanAdjIdBuilder.setFlags(new AdjacencyFlags(flags.get(ADDRESS_FAMILY_FLAG), flags.get(BACKUP_FLAG), flags.get(LOCAL_FLAG), flags.get(SET_FLAG), flags.get(VALUE_FLAG)));
104 srLanAdjIdBuilder.setWeight(new Weight(buffer.readUnsignedByte()));
105 srLanAdjIdBuilder.setIsoSystemId(new IsoSystemIdentifier(ByteArray.readBytes(buffer, ISO_SYSTEM_ID_SIZE)));
106 srLanAdjIdBuilder.setSid(new SidLabel(parseSidSubTlv(buffer)));
107 return srLanAdjIdBuilder.build();
110 private static SidLabel parseSidSubTlv(final ByteBuf buffer) {
111 final SidLabel sidValue;
112 final int type = buffer.readUnsignedByte();
113 final int length = buffer.readUnsignedByte();
114 sidValue = new SidLabel(ByteArray.readAllBytes(buffer.readSlice(length)));
115 if (type != SID_TYPE) {
116 LOG.warn("Unexpected type in SID/label Sub-TLV, expected {}, actual {}, ignoring it", SID_TYPE, type);
122 public static ByteBuf serializeLanAdjacencySegmentIdentifier(final SrLanAdjId srLanAdjId) {
123 final ByteBuf value = Unpooled.buffer();
124 final AdjacencyFlags srAdjIdFlags = srLanAdjId.getFlags();
125 final BitArray flags = new BitArray(FLAGS_SIZE);
126 flags.set(ADDRESS_FAMILY_FLAG, srAdjIdFlags.isAddressFamily());
127 flags.set(BACKUP_FLAG, srAdjIdFlags.isBackup());
128 flags.set(VALUE_FLAG, srAdjIdFlags.isValue());
129 flags.set(LOCAL_FLAG, srAdjIdFlags.isLocal());
130 flags.set(SET_FLAG, srAdjIdFlags.isSetFlag());
131 flags.toByteBuf(value);
132 value.writeByte(srLanAdjId.getWeight().getValue());
133 value.writeBytes(srLanAdjId.getIsoSystemId().getValue());
134 TlvUtil.writeSrTLV(SID_TYPE, Unpooled.wrappedBuffer(srLanAdjId.getSid().getValue()), value);