bgp/extensions/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/impl/attribute/LinkAttributesParser.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.protocol.bgp.linkstate.impl.attribute;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import com.google.common.collect.Multimap;
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.ByteBufUtil;
  14 import io.netty.buffer.Unpooled;
  15 import java.nio.charset.StandardCharsets;
  16 import java.util.ArrayList;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Map.Entry;
  20 import org.opendaylight.protocol.bgp.linkstate.impl.attribute.sr.SrLinkAttributesParser;
  21 import org.opendaylight.protocol.bgp.linkstate.spi.TlvUtil;
  22 import org.opendaylight.protocol.util.BitArray;
  23 import org.opendaylight.protocol.util.ByteArray;
  24 import org.opendaylight.protocol.util.Ipv4Util;
  25 import org.opendaylight.protocol.util.Ipv6Util;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4AddressNoZone;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6AddressNoZone;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.AdministrativeGroup;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.Delay;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.Ipv4RouterIdentifier;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.Ipv6RouterIdentifier;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.LinkProtectionType;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.Loss;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.MplsProtocolMask;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.ProtocolId;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.LinkMinMaxDelay;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.LinkMinMaxDelayBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.PeerAdjSid;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.PeerAdjSidBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.PeerNodeSid;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.PeerNodeSidBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.PeerSetSids;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.PeerSetSidsBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.SrAdjIds;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.SrLanAdjIds;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.UnreservedBandwidth;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.UnreservedBandwidthBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.attribute.UnreservedBandwidthKey;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.LinkStateAttribute;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.LinkAttributesCase;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.LinkAttributesCaseBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.link.attributes._case.LinkAttributes;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.link.attributes._case.LinkAttributesBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125.Bandwidth;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125.Metric;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125.TeMetric;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.SrlgId;
  58 import org.opendaylight.yangtools.yang.binding.util.BindingMap;
  59 import org.opendaylight.yangtools.yang.common.Uint32;
  60 import org.opendaylight.yangtools.yang.common.Uint8;
  61 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
  62 import org.slf4j.Logger;
  63 import org.slf4j.LoggerFactory;
  64
  65 @VisibleForTesting
  66 public final class LinkAttributesParser {
  67     public static final int SR_LAN_ADJ_ID = 1100;
  68
  69     private static final Logger LOG = LoggerFactory.getLogger(LinkAttributesParser.class);
  70     private static final int UNRESERVED_BW_COUNT = 8;
  71
  72     private static final int BANDWIDTH_LENGTH = 4;
  73
  74     // MPLS protection mask bits
  75     private static final int FLAGS_SIZE = 8;
  76
  77     private static final int LDP_BIT = 0;
  78     private static final int RSVP_BIT = 1;
  79
  80     /* Link Attribute TLVs */
  81     private static final int REMOTE_IPV4_ROUTER_ID = 1030;
  82     private static final int REMOTE_IPV6_ROUTER_ID = 1031;
  83     private static final int ADMIN_GROUP = 1088;
  84     private static final int MAX_BANDWIDTH = 1089;
  85     private static final int MAX_RESERVABLE_BANDWIDTH = 1090;
  86     private static final int UNRESERVED_BANDWIDTH = 1091;
  87     private static final int TE_METRIC = 1092;
  88     private static final int LINK_PROTECTION_TYPE = 1093;
  89     private static final int MPLS_PROTOCOL = 1094;
  90     private static final int METRIC = 1095;
  91     private static final int SHARED_RISK_LINK_GROUP = 1096;
  92     private static final int LINK_OPAQUE = 1097;
  93     private static final int LINK_NAME = 1098;
  94     private static final int SR_ADJ_ID = 1099;
  95     private static final int PEER_NODE_SID_CODE = 1101;
  96     private static final int PEER_ADJ_SID_CODE = 1102;
  97     private static final int PEER_SET_SID_CODE = 1103;
  98     // Performance Metrics
  99     private static final int LINK_DELAY = 1114;
 100     private static final int LINK_MIN_MAX_DELAY = 1115;
 101     private static final int DELAY_VARIATION = 1116;
 102     private static final int LINK_LOSS = 1117;
 103     private static final int RESIDUAL_BANDWIDTH = 1118;
 104     private static final int AVAILABLE_BANDWIDTH = 1119;
 105     private static final int UTILIZED_BANDWIDTH = 1120;
 106
 107     private LinkAttributesParser() {
 108
 109     }
 110
 111     @FunctionalInterface
 112     private interface SerializerInterface {
 113         void check(Object cont);
 114     }
 115
 116     /**
 117      * Parse Link Attributes.
 118      *
 119      * @param attributes key is the tlv type and value is the value of the tlv
 120      * @param protocolId to differentiate parsing methods
 121      * @return {@link LinkStateAttribute}
 122      */
 123     static LinkStateAttribute parseLinkAttributes(final Multimap<Integer, ByteBuf> attributes,
 124             final ProtocolId protocolId) {
 125         final LinkAttributesBuilder builder = new LinkAttributesBuilder();
 126         final List<SrAdjIds> srAdjIds = new ArrayList<>();
 127         final List<SrLanAdjIds> srLanAdjIds = new ArrayList<>();
 128         final List<PeerSetSids> peerSetSids = new ArrayList<>();
 129         for (final Entry<Integer, ByteBuf> entry : attributes.entries()) {
 130             LOG.trace("Link attribute TLV {}", entry.getKey());
 131             final int key = entry.getKey();
 132             final ByteBuf value = entry.getValue();
 133             switch (key) {
 134                 case TlvUtil.LOCAL_IPV4_ROUTER_ID:
 135                     builder.setLocalIpv4RouterId(new Ipv4RouterIdentifier(Ipv4Util.addressForByteBuf(value)));
 136                     LOG.debug("Parsed IPv4 Router-ID of local node: {}", builder.getLocalIpv4RouterId());
 137                     break;
 138                 case TlvUtil.LOCAL_IPV6_ROUTER_ID:
 139                     builder.setLocalIpv6RouterId(new Ipv6RouterIdentifier(Ipv6Util.addressForByteBuf(value)));
 140                     LOG.debug("Parsed IPv6 Router-ID of local node: {}", builder.getLocalIpv6RouterId());
 141                     break;
 142                 case REMOTE_IPV4_ROUTER_ID:
 143                     builder.setRemoteIpv4RouterId(new Ipv4RouterIdentifier(Ipv4Util.addressForByteBuf(value)));
 144                     LOG.debug("Parsed IPv4 Router-ID of remote node: {}", builder.getRemoteIpv4RouterId());
 145                     break;
 146                 case REMOTE_IPV6_ROUTER_ID:
 147                     builder.setRemoteIpv6RouterId(new Ipv6RouterIdentifier(Ipv6Util.addressForByteBuf(value)));
 148                     LOG.debug("Parsed IPv6 Router-ID of remote node: {}", builder.getRemoteIpv6RouterId());
 149                     break;
 150                 case ADMIN_GROUP:
 151                     builder.setAdminGroup(new AdministrativeGroup(ByteBufUtils.readUint32(value)));
 152                     LOG.debug("Parsed Administrative Group {}", builder.getAdminGroup());
 153                     break;
 154                 case MAX_BANDWIDTH:
 155                     builder.setMaxLinkBandwidth(new Bandwidth(ByteArray.readAllBytes(value)));
 156                     LOG.debug("Parsed Max Bandwidth {}", builder.getMaxLinkBandwidth());
 157                     break;
 158                 case MAX_RESERVABLE_BANDWIDTH:
 159                     builder.setMaxReservableBandwidth(new Bandwidth(ByteArray.readAllBytes(value)));
 160                     LOG.debug("Parsed Max Reservable Bandwidth {}", builder.getMaxReservableBandwidth());
 161                     break;
 162                 case UNRESERVED_BANDWIDTH:
 163                     parseUnreservedBandwidth(value, builder);
 164                     break;
 165                 case TE_METRIC:
 166                     builder.setTeMetric(new TeMetric(ByteBufUtils.readUint32(value)));
 167                     LOG.debug("Parsed Metric {}", builder.getTeMetric());
 168                     break;
 169                 case LINK_PROTECTION_TYPE:
 170                     builder.setLinkProtection(LinkProtectionType.forValue(value.readShort()));
 171                     LOG.debug("Parsed Link Protection Type {}", builder.getLinkProtection());
 172                     break;
 173                 case MPLS_PROTOCOL:
 174                     final BitArray bits = BitArray.valueOf(value, FLAGS_SIZE);
 175                     builder.setMplsProtocol(new MplsProtocolMask(bits.get(LDP_BIT), bits.get(RSVP_BIT)));
 176                     LOG.debug("Parsed MPLS Protocols: {}", builder.getMplsProtocol());
 177                     break;
 178                 case METRIC:
 179                     // length can 3, 2 or 1
 180                     builder.setMetric(new Metric(Uint32.valueOf(ByteArray.bytesToLong(ByteArray.readAllBytes(value)))));
 181                     LOG.debug("Parsed Metric {}", builder.getMetric());
 182                     break;
 183                 case SHARED_RISK_LINK_GROUP:
 184                     parseSrlg(value, builder);
 185                     break;
 186                 case LINK_OPAQUE:
 187                     LOG.debug("Parsed Opaque value : {}", ByteBufUtil.hexDump(value));
 188                     break;
 189                 case LINK_NAME:
 190                     builder.setLinkName(new String(ByteArray.readAllBytes(value), StandardCharsets.US_ASCII));
 191                     LOG.debug("Parsed Link Name : {}", builder.getLinkName());
 192                     break;
 193                 case SR_ADJ_ID:
 194                     srAdjIds.add(SrLinkAttributesParser.parseAdjacencySegmentIdentifier(value, protocolId));
 195                     LOG.debug("Parsed Adjacency Segment Identifier :{}", srAdjIds.get(srAdjIds.size() - 1));
 196                     break;
 197                 case SR_LAN_ADJ_ID:
 198                     srLanAdjIds.add(SrLinkAttributesParser.parseLanAdjacencySegmentIdentifier(value, protocolId));
 199                     LOG.debug("Parsed Adjacency Segment Identifier :{}", srLanAdjIds.get(srLanAdjIds.size() - 1));
 200                     break;
 201                 case PEER_NODE_SID_CODE:
 202                     builder.setPeerNodeSid(new PeerNodeSidBuilder(
 203                         SrLinkAttributesParser.parseEpeAdjacencySegmentIdentifier(value)).build());
 204                     LOG.debug("Parsed Peer Segment Identifier :{}", builder.getPeerNodeSid());
 205                     break;
 206                 case PEER_ADJ_SID_CODE:
 207                     builder.setPeerAdjSid(new PeerAdjSidBuilder(
 208                         SrLinkAttributesParser.parseEpeAdjacencySegmentIdentifier(value)).build());
 209                     LOG.debug("Parsed Peer Segment Identifier :{}", builder.getPeerAdjSid());
 210                     break;
 211                 case PEER_SET_SID_CODE:
 212                     peerSetSids.add(new PeerSetSidsBuilder(
 213                         SrLinkAttributesParser.parseEpeAdjacencySegmentIdentifier(value)).build());
 214                     LOG.debug("Parsed Peer Set Sid :{}", peerSetSids.get(peerSetSids.size() - 1));
 215                     break;
 216                     // Performance Metrics
 217                 case LINK_DELAY:
 218                     builder.setLinkDelay(new Delay(ByteBufUtils.readUint32(value)));
 219                     LOG.debug("Parsed Link Delay {}", builder.getLinkDelay());
 220                     break;
 221                 case LINK_MIN_MAX_DELAY:
 222                     builder.setLinkMinMaxDelay(new LinkMinMaxDelayBuilder()
 223                         .setMinDelay(new Delay(ByteBufUtils.readUint32(value)))
 224                         .setMaxDelay(new Delay(ByteBufUtils.readUint32(value)))
 225                         .build());
 226                     LOG.debug("Parsed Link Min/Max Delay {}", builder.getLinkMinMaxDelay());
 227                     break;
 228                 case DELAY_VARIATION:
 229                     builder.setDelayVariation(new Delay(ByteBufUtils.readUint32(value)));
 230                     LOG.debug("Parsed Delay Variation {}", builder.getDelayVariation());
 231                     break;
 232                 case LINK_LOSS:
 233                     builder.setLinkLoss(new Loss(ByteBufUtils.readUint32(value)));
 234                     LOG.debug("Parsed Link Loss {}", builder.getLinkLoss());
 235                     break;
 236                 case RESIDUAL_BANDWIDTH:
 237                     builder.setResidualBandwidth(new Bandwidth(ByteArray.readAllBytes(value)));
 238                     LOG.debug("Parsed Residual Bandwidth {}", builder.getResidualBandwidth());
 239                     break;
 240                 case AVAILABLE_BANDWIDTH:
 241                     builder.setAvailableBandwidth(new Bandwidth(ByteArray.readAllBytes(value)));
 242                     LOG.debug("Parsed Available Bandwidth {}", builder.getAvailableBandwidth());
 243                     break;
 244                 case UTILIZED_BANDWIDTH:
 245                     builder.setUtilizedBandwidth(new Bandwidth(ByteArray.readAllBytes(value)));
 246                     LOG.debug("Parsed Utilized Bandwidth {}", builder.getUtilizedBandwidth());
 247                     break;
 248                 default:
 249                     LOG.warn("TLV {} is not a valid link attribute, ignoring it", key);
 250             }
 251         }
 252         if (!srAdjIds.isEmpty()) {
 253             builder.setSrAdjIds(srAdjIds);
 254         }
 255         if (!srLanAdjIds.isEmpty()) {
 256             builder.setSrLanAdjIds(srLanAdjIds);
 257         }
 258         if (!peerSetSids.isEmpty()) {
 259             builder.setPeerSetSids(peerSetSids);
 260         }
 261         LOG.trace("Finished parsing Link Attributes.");
 262         return new LinkAttributesCaseBuilder().setLinkAttributes(builder.build()).build();
 263     }
 264
 265     private static void parseUnreservedBandwidth(final ByteBuf value, final LinkAttributesBuilder builder) {
 266         final var unreservedBandwidth =
 267             BindingMap.<UnreservedBandwidthKey, UnreservedBandwidth>orderedBuilder(UNRESERVED_BW_COUNT);
 268         for (int i = 0; i < UNRESERVED_BW_COUNT; i++) {
 269             final ByteBuf v = value.readSlice(BANDWIDTH_LENGTH);
 270             unreservedBandwidth.add(new UnreservedBandwidthBuilder()
 271                 .setBandwidth(new Bandwidth(ByteArray.readAllBytes(v)))
 272                 .setPriority(Uint8.valueOf(i))
 273                 .build());
 274         }
 275         builder.setUnreservedBandwidth(unreservedBandwidth.build());
 276         LOG.debug("Parsed Unreserved Bandwidth {}", builder.getUnreservedBandwidth());
 277     }
 278
 279     private static void parseSrlg(final ByteBuf value, final LinkAttributesBuilder builder) {
 280         final List<SrlgId> sharedRiskLinkGroups = new ArrayList<>();
 281         while (value.isReadable()) {
 282             sharedRiskLinkGroups.add(new SrlgId(ByteBufUtils.readUint32(value)));
 283         }
 284         builder.setSharedRiskLinkGroups(sharedRiskLinkGroups);
 285         LOG.debug("Parsed Shared Risk Link Groups {}", builder.getSharedRiskLinkGroups());
 286     }
 287
 288     private static void ifPresentApply(final Object tlv, final SerializerInterface serializer) {
 289         if (tlv != null) {
 290             serializer.check(tlv);
 291         }
 292     }
 293
 294
 295     static void serializeLinkAttributes(final LinkAttributesCase linkAttributesCase, final ByteBuf output) {
 296         final LinkAttributes linkAttributes = linkAttributesCase.getLinkAttributes();
 297         LOG.trace("Started serializing Link Attributes");
 298         ifPresentApply(linkAttributes.getLocalIpv4RouterId(), value -> TlvUtil.writeTLV(TlvUtil.LOCAL_IPV4_ROUTER_ID,
 299             Ipv4Util.byteBufForAddress((Ipv4AddressNoZone) value), output));
 300         ifPresentApply(linkAttributes.getLocalIpv6RouterId(), value -> TlvUtil.writeTLV(TlvUtil.LOCAL_IPV6_ROUTER_ID,
 301             Ipv6Util.byteBufForAddress((Ipv6AddressNoZone) value), output));
 302         ifPresentApply(linkAttributes.getRemoteIpv4RouterId(), value -> TlvUtil.writeTLV(REMOTE_IPV4_ROUTER_ID,
 303             Ipv4Util.byteBufForAddress((Ipv4AddressNoZone) value), output));
 304         ifPresentApply(linkAttributes.getRemoteIpv6RouterId(), value -> TlvUtil.writeTLV(REMOTE_IPV6_ROUTER_ID,
 305             Ipv6Util.byteBufForAddress((Ipv6AddressNoZone) value), output));
 306         ifPresentApply(linkAttributes.getAdminGroup(), value -> TlvUtil.writeTLV(ADMIN_GROUP,
 307             Unpooled.copyInt(((AdministrativeGroup) value).getValue().intValue()), output));
 308         ifPresentApply(linkAttributes.getMaxLinkBandwidth(), value -> TlvUtil.writeTLV(MAX_BANDWIDTH,
 309             Unpooled.wrappedBuffer(((Bandwidth) value).getValue()), output));
 310         ifPresentApply(linkAttributes.getMaxReservableBandwidth(), value -> TlvUtil.writeTLV(MAX_RESERVABLE_BANDWIDTH,
 311             Unpooled.wrappedBuffer(((Bandwidth) value).getValue()), output));
 312         serializeUnreservedBw(linkAttributes.getUnreservedBandwidth(), output);
 313         ifPresentApply(linkAttributes.getTeMetric(), value -> TlvUtil.writeTLV(TE_METRIC,
 314             Unpooled.copyLong(((TeMetric) value).getValue().toJava()), output));
 315         ifPresentApply(linkAttributes.getLinkProtection(), value -> TlvUtil.writeTLV(LINK_PROTECTION_TYPE,
 316             Unpooled.copyShort(((LinkProtectionType) value).getIntValue()), output));
 317         serializeMplsProtocolMask(linkAttributes.getMplsProtocol(), output);
 318         ifPresentApply(linkAttributes.getMetric(), value -> TlvUtil.writeTLV(METRIC,
 319             Unpooled.copyMedium(((Metric) value).getValue().intValue()), output));
 320         serializeSrlg(linkAttributes.getSharedRiskLinkGroups(), output);
 321         ifPresentApply(linkAttributes.getLinkName(), value -> TlvUtil.writeTLV(LINK_NAME,
 322             Unpooled.wrappedBuffer(StandardCharsets.UTF_8.encode((String) value)), output));
 323         ifPresentApply(linkAttributes.getSrAdjIds(),
 324             value -> SrLinkAttributesParser.serializeAdjacencySegmentIdentifiers((List<SrAdjIds>) value, SR_ADJ_ID,
 325                 output));
 326         ifPresentApply(linkAttributes.getSrLanAdjIds(),
 327             value -> SrLinkAttributesParser.serializeLanAdjacencySegmentIdentifiers((List<SrLanAdjIds>) value, output));
 328         ifPresentApply(linkAttributes.getPeerNodeSid(), value -> TlvUtil.writeTLV(PEER_NODE_SID_CODE,
 329             SrLinkAttributesParser.serializeAdjacencySegmentIdentifier((PeerNodeSid) value), output));
 330         ifPresentApply(linkAttributes.getPeerAdjSid(), value -> TlvUtil.writeTLV(PEER_ADJ_SID_CODE,
 331             SrLinkAttributesParser.serializeAdjacencySegmentIdentifier((PeerAdjSid) value), output));
 332         ifPresentApply(linkAttributes.getPeerSetSids(),
 333             value -> SrLinkAttributesParser.serializeAdjacencySegmentIdentifiers((List<PeerSetSids>) value,
 334                 PEER_SET_SID_CODE, output));
 335         // Performance Metrics
 336         ifPresentApply(linkAttributes.getLinkDelay(), value -> TlvUtil.writeTLV(LINK_DELAY,
 337             Unpooled.copyInt(((Delay) value).getValue().intValue()), output));
 338         serializeLinkMinMaxDelay(linkAttributes.getLinkMinMaxDelay(), output);
 339         ifPresentApply(linkAttributes.getDelayVariation(), value -> TlvUtil.writeTLV(DELAY_VARIATION,
 340             Unpooled.copyInt(((Delay) value).getValue().intValue()), output));
 341         ifPresentApply(linkAttributes.getLinkLoss(), value -> TlvUtil.writeTLV(LINK_LOSS,
 342             Unpooled.copyInt(((Loss) value).getValue().intValue()), output));
 343         ifPresentApply(linkAttributes.getResidualBandwidth(), value -> TlvUtil.writeTLV(RESIDUAL_BANDWIDTH,
 344             Unpooled.wrappedBuffer(((Bandwidth) value).getValue()), output));
 345         ifPresentApply(linkAttributes.getAvailableBandwidth(), value -> TlvUtil.writeTLV(AVAILABLE_BANDWIDTH,
 346             Unpooled.wrappedBuffer(((Bandwidth) value).getValue()), output));
 347         ifPresentApply(linkAttributes.getUtilizedBandwidth(), value -> TlvUtil.writeTLV(UTILIZED_BANDWIDTH,
 348             Unpooled.wrappedBuffer(((Bandwidth) value).getValue()), output));
 349         LOG.trace("Finished serializing Link Attributes");
 350     }
 351
 352     private static void serializeUnreservedBw(final Map<UnreservedBandwidthKey, UnreservedBandwidth> ubList,
 353             final ByteBuf byteAggregator) {
 354         // this sub-TLV contains eight 32-bit IEEE floating point numbers
 355         if (ubList != null) {
 356             final ByteBuf unreservedBandwithBuf = Unpooled.buffer();
 357             for (final UnreservedBandwidth unreservedBandwidth : ubList.values()) {
 358                 unreservedBandwithBuf.writeBytes(unreservedBandwidth.getBandwidth().getValue());
 359             }
 360             TlvUtil.writeTLV(UNRESERVED_BANDWIDTH, unreservedBandwithBuf, byteAggregator);
 361         }
 362     }
 363
 364     private static void serializeSrlg(final List<SrlgId> srlgList, final ByteBuf byteAggregator) {
 365         if (srlgList != null) {
 366             final ByteBuf sharedRLGBuf = Unpooled.buffer();
 367             for (final SrlgId srlgId : srlgList) {
 368                 sharedRLGBuf.writeInt(srlgId.getValue().intValue());
 369             }
 370             TlvUtil.writeTLV(SHARED_RISK_LINK_GROUP, sharedRLGBuf, byteAggregator);
 371         }
 372     }
 373
 374     private static void serializeMplsProtocolMask(final MplsProtocolMask mplsProtocolMask,
 375             final ByteBuf byteAggregator) {
 376         if (mplsProtocolMask != null) {
 377             final ByteBuf mplsProtocolMaskBuf = Unpooled.buffer(1);
 378             final BitArray mask = new BitArray(FLAGS_SIZE);
 379             mask.set(LDP_BIT, mplsProtocolMask.getLdp());
 380             mask.set(RSVP_BIT, mplsProtocolMask.getRsvpte());
 381             mask.toByteBuf(mplsProtocolMaskBuf);
 382             TlvUtil.writeTLV(MPLS_PROTOCOL, mplsProtocolMaskBuf, byteAggregator);
 383         }
 384     }
 385
 386     private static void serializeLinkMinMaxDelay(final LinkMinMaxDelay linkMinMaxDelay, final ByteBuf byteAggregator) {
 387         if (linkMinMaxDelay != null) {
 388             final ByteBuf linkMinMaxDelayBuf = Unpooled.buffer();
 389             linkMinMaxDelayBuf.writeInt(linkMinMaxDelay.getMinDelay().getValue().intValue());
 390             linkMinMaxDelayBuf.writeInt(linkMinMaxDelay.getMaxDelay().getValue().intValue());
 391             TlvUtil.writeTLV(LINK_MIN_MAX_DELAY, linkMinMaxDelayBuf, byteAggregator);
 392         }
 393     }
 394 }