bgp/openconfig-state/src/main/java/org/opendaylight/protocol/bgp/state/NeighborUtil.java

   1 /*
   2  * Copyright (c) 2016 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
   9 package org.opendaylight.protocol.bgp.state;
  10
  11 import com.google.common.primitives.UnsignedInteger;
  12 import java.math.BigDecimal;
  13 import java.util.ArrayList;
  14 import java.util.HashSet;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.Objects;
  18 import java.util.Set;
  19 import java.util.function.Function;
  20 import java.util.stream.Collectors;
  21 import org.eclipse.jdt.annotation.NonNull;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.opendaylight.protocol.bgp.openconfig.spi.BGPTableTypeRegistryConsumer;
  24 import org.opendaylight.protocol.bgp.rib.spi.state.BGPAfiSafiState;
  25 import org.opendaylight.protocol.bgp.rib.spi.state.BGPErrorHandlingState;
  26 import org.opendaylight.protocol.bgp.rib.spi.state.BGPGracelfulRestartState;
  27 import org.opendaylight.protocol.bgp.rib.spi.state.BGPLlGracelfulRestartState;
  28 import org.opendaylight.protocol.bgp.rib.spi.state.BGPPeerMessagesState;
  29 import org.opendaylight.protocol.bgp.rib.spi.state.BGPPeerState;
  30 import org.opendaylight.protocol.bgp.rib.spi.state.BGPSessionState;
  31 import org.opendaylight.protocol.bgp.rib.spi.state.BGPTimersState;
  32 import org.opendaylight.protocol.bgp.rib.spi.state.BGPTransportState;
  33 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi.safi.list.AfiSafi;
  34 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi.safi.list.AfiSafiBuilder;
  35 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi.safi.list.AfiSafiKey;
  36 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.operational.rev151009.BgpNeighborState.SessionState;
  37 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.operational.rev151009.bgp.neighbor.prefix.counters_state.PrefixesBuilder;
  38 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.graceful.restart.GracefulRestart;
  39 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.graceful.restart.GracefulRestartBuilder;
  40 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.AfiSafis;
  41 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.AfiSafisBuilder;
  42 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.ErrorHandling;
  43 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.ErrorHandlingBuilder;
  44 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.State;
  45 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.StateBuilder;
  46 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.Timers;
  47 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.TimersBuilder;
  48 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.Transport;
  49 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group.TransportBuilder;
  50 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbors.Neighbor;
  51 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbors.NeighborBuilder;
  52 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.top.bgp.Neighbors;
  53 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.top.bgp.NeighborsBuilder;
  54 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.ADDPATHS;
  55 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.ASN32;
  56 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.AfiSafiType;
  57 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.BgpCapability;
  58 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.GRACEFULRESTART;
  59 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.MPBGP;
  60 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.ROUTEREFRESH;
  61 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  62 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressNoZone;
  63 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4AddressNoZone;
  64 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Timeticks;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.BgpNeighborStateAugmentation;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.BgpNeighborStateAugmentationBuilder;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborAfiSafiGracefulRestartStateAugmentation;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborAfiSafiGracefulRestartStateAugmentationBuilder;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborAfiSafiStateAugmentationBuilder;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborErrorHandlingStateAugmentation;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborErrorHandlingStateAugmentationBuilder;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborGracefulRestartStateAugmentation;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborGracefulRestartStateAugmentationBuilder;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborStateAugmentation;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborStateAugmentationBuilder;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborTimersStateAugmentationBuilder;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.NeighborTransportStateAugmentationBuilder;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.bgp.neighbor_state.augmentation.MessagesBuilder;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.bgp.neighbor_state.augmentation.messages.Received;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.bgp.neighbor_state.augmentation.messages.ReceivedBuilder;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.bgp.neighbor_state.augmentation.messages.Sent;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.network.instance.protocol.bgp.neighbor_state.augmentation.messages.SentBuilder;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  84 import org.opendaylight.yangtools.yang.common.Uint16;
  85 import org.opendaylight.yangtools.yang.common.Uint32;
  86 import org.opendaylight.yangtools.yang.common.Uint64;
  87
  88 /**
  89  * Util for create OpenConfig Neighbor with corresponding openConfig state.
  90  */
  91 public final class NeighborUtil {
  92     private static final long TIMETICK_ROLLOVER_VALUE = UnsignedInteger.MAX_VALUE.longValue() + 1;
  93
  94     private NeighborUtil() {
  95         // Hidden on purpose
  96     }
  97
  98     /**
  99      * Build a Openconfig Neighbors container with all Neighbors Stats from a list of
 100      * BGPPeerGroupState.
 101      *
 102      * @param peerStats            List of BGPPeerState containing Neighbor state counters
 103      * @param bgpTableTypeRegistry BGP TableType Registry
 104      * @return Openconfig Neighbors Stats
 105      */
 106     public static @Nullable Neighbors buildNeighbors(final @NonNull List<BGPPeerState> peerStats,
 107             final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 108         if (peerStats.isEmpty()) {
 109             return null;
 110         }
 111         return new NeighborsBuilder().setNeighbor(peerStats.stream()
 112                 .filter(Objects::nonNull)
 113                 .map(neighbor -> buildNeighbor(neighbor, bgpTableTypeRegistry))
 114                 .collect(Collectors.toUnmodifiableMap(Neighbor::key, Function.identity()))).build();
 115     }
 116
 117     /**
 118      * Build a list of neighbors containing Operational State from a list of BGPPeerState.
 119      *
 120      * @param neighbor containing Neighbor state counters
 121      * @return neighbor containing Neighbor State
 122      */
 123     public static @NonNull Neighbor buildNeighbor(final @NonNull BGPPeerState neighbor,
 124             final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 125         return new NeighborBuilder()
 126                 .setNeighborAddress(convertIpAddress(neighbor.getNeighborAddress()))
 127                 .setState(buildNeighborState(neighbor.getBGPSessionState(), neighbor.getBGPPeerMessagesState()))
 128                 .setTimers(buildTimer(neighbor.getBGPTimersState()))
 129                 .setTransport(buildTransport(neighbor.getBGPTransportState()))
 130                 .setErrorHandling(buildErrorHandling(neighbor.getBGPErrorHandlingState()))
 131                 .setGracefulRestart(buildGracefulRestart(neighbor.getBGPGracelfulRestart()))
 132                 .setAfiSafis(buildAfisSafis(neighbor, bgpTableTypeRegistry))
 133                 .build();
 134     }
 135
 136     private static IpAddress convertIpAddress(final IpAddressNoZone addr) {
 137         if (addr == null) {
 138             return null;
 139         }
 140         final Ipv4AddressNoZone ipv4 = addr.getIpv4AddressNoZone();
 141         if (ipv4 != null) {
 142             return new IpAddress(ipv4);
 143         }
 144         return new IpAddress(addr.getIpv6AddressNoZone());
 145     }
 146
 147     /**
 148      * Builds Neighbor State from BGPPeerState counters.
 149      *
 150      * @param sessionState         BGPPeerState containing Operational state counters
 151      * @param bgpPeerMessagesState message state
 152      * @return Neighbor State
 153      */
 154     public static @Nullable State buildNeighborState(final @Nullable BGPSessionState sessionState,
 155             final BGPPeerMessagesState bgpPeerMessagesState) {
 156         if (sessionState == null && bgpPeerMessagesState == null) {
 157             return null;
 158         }
 159         final StateBuilder builder = new StateBuilder();
 160         if (sessionState != null) {
 161             builder.addAugmentation(buildCapabilityState(sessionState));
 162         }
 163         if (bgpPeerMessagesState != null) {
 164             builder.addAugmentation(buildMessageState(bgpPeerMessagesState));
 165         }
 166         return builder.build();
 167     }
 168
 169     /**
 170      * Builds Neighbor State from BGPPeerState counters.
 171      *
 172      * @param neighbor BGPPeerState containing Operational state counters
 173      * @return Timer State
 174      */
 175     public static @Nullable Timers buildTimer(final @Nullable BGPTimersState neighbor) {
 176         if (neighbor == null) {
 177             return null;
 178         }
 179         // convert neighbor uptime which is in milliseconds to time-ticks which is
 180         // hundredth of a second, and handle roll-over scenario
 181         final long uptimeTicks = neighbor.getUpTime() / 10 % TIMETICK_ROLLOVER_VALUE;
 182
 183         return new TimersBuilder()
 184                 .setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group
 185                     .timers.StateBuilder()
 186                         .addAugmentation(new NeighborTimersStateAugmentationBuilder()
 187                             .setNegotiatedHoldTime(BigDecimal.valueOf(neighbor.getNegotiatedHoldTime()))
 188                             .setUptime(new Timeticks(Uint32.valueOf(uptimeTicks))).build())
 189                         .build())
 190                 .build();
 191     }
 192
 193     /**
 194      * Builds Transport State from BGPTransportState counters.
 195      *
 196      * @param neighbor BGPPeerState containing Operational state counters
 197      * @return Transport State
 198      */
 199     public static @Nullable Transport buildTransport(final @Nullable BGPTransportState neighbor) {
 200         if (neighbor == null) {
 201             return null;
 202         }
 203
 204         return new TransportBuilder().setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009
 205                 .bgp.neighbor.group.transport.StateBuilder()
 206                     .addAugmentation(new NeighborTransportStateAugmentationBuilder()
 207                         .setLocalPort(neighbor.getLocalPort())
 208                         .setRemoteAddress(convertIpAddress(neighbor.getRemoteAddress()))
 209                         .setRemotePort(neighbor.getRemotePort())
 210                         .build())
 211                     .build())
 212                 .build();
 213     }
 214
 215     /**
 216      * Builds Error Handling State from BGPPeerState counters.
 217      *
 218      * @param errorHandlingState BGPErrorHandlingState containing ErrorHandlingState Operational state counters
 219      * @return Error Handling State
 220      */
 221     public static ErrorHandling buildErrorHandling(final @Nullable BGPErrorHandlingState errorHandlingState) {
 222         if (errorHandlingState == null) {
 223             return null;
 224         }
 225         return new ErrorHandlingBuilder()
 226                 .setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group
 227                     .error.handling.StateBuilder()
 228                         .addAugmentation(buildErrorHandlingState(errorHandlingState.getErroneousUpdateReceivedCount()))
 229                         .build())
 230                 .build();
 231     }
 232
 233     /**
 234      * Builds Graceful Restart containing Graceful Restart State from BGPGracelfulRestartState counters.
 235      *
 236      * @param neighbor BGPPeerState containing Operational state counters
 237      * @return Graceful Restart
 238      */
 239     public static @NonNull GracefulRestart buildGracefulRestart(final @NonNull BGPGracelfulRestartState neighbor) {
 240         final NeighborGracefulRestartStateAugmentation gracefulRestartState =
 241                 new NeighborGracefulRestartStateAugmentationBuilder()
 242                         .setLocalRestarting(neighbor.isLocalRestarting())
 243                         .setPeerRestartTime(Uint16.valueOf(neighbor.getPeerRestartTime()))
 244                         .setMode(neighbor.getMode())
 245                         .setPeerRestarting(neighbor.isPeerRestarting()).build();
 246
 247         return new GracefulRestartBuilder().setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp
 248                 .rev151009.bgp.graceful.restart.graceful.restart.StateBuilder()
 249                 .addAugmentation(gracefulRestartState).build()).build();
 250     }
 251
 252     /**
 253      * Builds  Neighbor Afi Safi containing AfiSafi State.
 254      *
 255      * @param neighbor BGPPeerState containing Operational state counters
 256      * @return Afi Safis
 257      */
 258     public static AfiSafis buildAfisSafis(final @NonNull BGPPeerState neighbor,
 259             final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 260         return new AfiSafisBuilder().setAfiSafi(buildAfisSafisState(neighbor.getBGPAfiSafiState(),
 261                 bgpTableTypeRegistry)).build();
 262     }
 263
 264     /**
 265      * Builds  Neighbor State containing Capabilities State, session State.
 266      *
 267      * @return Neighbor State
 268      */
 269     public static NeighborStateAugmentation buildCapabilityState(final @NonNull BGPSessionState neighbor) {
 270
 271         final List<Class<? extends BgpCapability>> supportedCapabilities = buildSupportedCapabilities(neighbor);
 272         SessionState sessionState = null;
 273         switch (neighbor.getSessionState()) {
 274             case IDLE:
 275                 sessionState = SessionState.IDLE;
 276                 break;
 277             case UP:
 278                 sessionState = SessionState.ESTABLISHED;
 279                 break;
 280             case OPEN_CONFIRM:
 281                 sessionState = SessionState.OPENCONFIRM;
 282                 break;
 283             default:
 284         }
 285         return new NeighborStateAugmentationBuilder().setSupportedCapabilities(supportedCapabilities)
 286                 .setSessionState(sessionState).build();
 287     }
 288
 289     /**
 290      * Builds Bgp Neighbor State containing Message State.
 291      *
 292      * @return BgpNeighborState containing Message State
 293      */
 294     public static @NonNull BgpNeighborStateAugmentation buildMessageState(
 295             final @NonNull BGPPeerMessagesState neighbor) {
 296         return new BgpNeighborStateAugmentationBuilder()
 297                 .setMessages(new MessagesBuilder()
 298                         .setReceived(buildMessagesReceived(neighbor))
 299                         .setSent(buildMessagesSent(neighbor)).build()).build();
 300     }
 301
 302     private static Received buildMessagesReceived(final @NonNull BGPPeerMessagesState neighbor) {
 303         return new ReceivedBuilder()
 304                 .setUPDATE(Uint64.valueOf(neighbor.getUpdateMessagesReceivedCount()))
 305                 .setNOTIFICATION(Uint64.valueOf(neighbor.getNotificationMessagesReceivedCount()))
 306                 .build();
 307     }
 308
 309     private static Sent buildMessagesSent(final @NonNull BGPPeerMessagesState neighbor) {
 310         return new SentBuilder()
 311                 .setUPDATE(Uint64.valueOf(neighbor.getUpdateMessagesSentCount()))
 312                 .setNOTIFICATION(Uint64.valueOf(neighbor.getNotificationMessagesSentCount()))
 313                 .build();
 314     }
 315
 316     /**
 317      * Builds Neighbor Error Handling State.
 318      *
 319      * @param erroneousUpdateCount erroneous Update Count
 320      * @return Error Handling State
 321      */
 322     public static @NonNull NeighborErrorHandlingStateAugmentation buildErrorHandlingState(
 323             final long erroneousUpdateCount) {
 324         return new NeighborErrorHandlingStateAugmentationBuilder()
 325                 .setErroneousUpdateMessages(saturatedUint32(erroneousUpdateCount)).build();
 326     }
 327
 328     /**
 329      * Build List of afi safi containing State per Afi Safi.
 330      *
 331      * @return AfiSafi List
 332      */
 333     public static @NonNull Map<AfiSafiKey, AfiSafi> buildAfisSafisState(final @NonNull BGPAfiSafiState neighbor,
 334             final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 335         final Set<TablesKey> afiSafiJoin = new HashSet<>(neighbor.getAfiSafisAdvertized());
 336         afiSafiJoin.addAll(neighbor.getAfiSafisReceived());
 337         return afiSafiJoin.stream().map(tableKey -> buildAfiSafi(neighbor, tableKey, bgpTableTypeRegistry))
 338                 .filter(Objects::nonNull)
 339                 .collect(Collectors.toUnmodifiableMap(AfiSafi::key, Function.identity()));
 340     }
 341
 342     private static @Nullable AfiSafi buildAfiSafi(final @NonNull BGPAfiSafiState neighbor,
 343             final @NonNull TablesKey tablesKey, final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 344         final Class<? extends AfiSafiType> afiSafi = bgpTableTypeRegistry.getAfiSafiType(tablesKey);
 345         return afiSafi == null ? null : new AfiSafiBuilder()
 346             .setAfiSafiName(afiSafi)
 347             .setState(buildAfiSafiState(neighbor, tablesKey, neighbor.isAfiSafiSupported(tablesKey)))
 348             .setGracefulRestart(buildAfiSafiGracefulRestartState(neighbor, tablesKey))
 349             .build();
 350     }
 351
 352     private static org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 353             .safi.list.afi.safi.State buildAfiSafiState(final @NonNull BGPAfiSafiState neighbor,
 354             final @NonNull TablesKey tablesKey, final boolean afiSafiSupported) {
 355         final NeighborAfiSafiStateAugmentationBuilder builder = new NeighborAfiSafiStateAugmentationBuilder();
 356         builder.setActive(afiSafiSupported);
 357         if (afiSafiSupported) {
 358             builder.setPrefixes(new PrefixesBuilder()
 359                     .setInstalled(saturatedUint32(neighbor.getPrefixesInstalledCount(tablesKey)))
 360                     .setReceived(saturatedUint32(neighbor.getPrefixesReceivedCount(tablesKey)))
 361                     .setSent(saturatedUint32(neighbor.getPrefixesSentCount(tablesKey))).build());
 362         }
 363         return new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 364                 .safi.list.afi.safi.StateBuilder().addAugmentation(builder.build()).build();
 365     }
 366
 367     // FIXME: remove this with YANGTOOLS-5.0.7+
 368     private static Uint32 saturatedUint32(final long value) {
 369         return value < 4294967295L ? Uint32.valueOf(value) : Uint32.MAX_VALUE;
 370     }
 371
 372     private static org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 373             .safi.list.afi.safi.GracefulRestart buildAfiSafiGracefulRestartState(
 374             final @NonNull BGPLlGracelfulRestartState neighbor, final @NonNull TablesKey tablesKey) {
 375         final NeighborAfiSafiGracefulRestartStateAugmentation builder =
 376                 new NeighborAfiSafiGracefulRestartStateAugmentationBuilder()
 377                         .setAdvertised(neighbor.isGracefulRestartAdvertized(tablesKey))
 378                         .setReceived(neighbor.isGracefulRestartReceived(tablesKey))
 379                         .setLlAdvertised(neighbor.isLlGracefulRestartAdvertised(tablesKey))
 380                         .setLlReceived(neighbor.isLlGracefulRestartReceived(tablesKey))
 381                         .setLlStaleTimer(Uint32.valueOf(neighbor.getLlGracefulRestartTimer(tablesKey))).build();
 382         return new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 383                 .safi.list.afi.safi.GracefulRestartBuilder().setState(new org.opendaylight.yang.gen.v1.http.openconfig
 384                 .net.yang.bgp.multiprotocol.rev151009.bgp.common.afi.safi.list.afi.safi.graceful.restart.StateBuilder()
 385                 .addAugmentation(builder).build()).build();
 386     }
 387
 388     /**
 389      * Builds List of BgpCapability supported capabilities.
 390      *
 391      * @return List containing supported capabilities
 392      */
 393     public static @NonNull List<Class<? extends BgpCapability>> buildSupportedCapabilities(
 394             final @NonNull BGPSessionState neighbor) {
 395         final List<Class<? extends BgpCapability>> supportedCapabilities = new ArrayList<>();
 396         if (neighbor.isAddPathCapabilitySupported()) {
 397             supportedCapabilities.add(ADDPATHS.class);
 398         }
 399         if (neighbor.isAsn32CapabilitySupported()) {
 400             supportedCapabilities.add(ASN32.class);
 401         }
 402         if (neighbor.isGracefulRestartCapabilitySupported()) {
 403             supportedCapabilities.add(GRACEFULRESTART.class);
 404         }
 405         if (neighbor.isMultiProtocolCapabilitySupported()) {
 406             supportedCapabilities.add(MPBGP.class);
 407         }
 408         if (neighbor.isRouterRefreshCapabilitySupported()) {
 409             supportedCapabilities.add(ROUTEREFRESH.class);
 410         }
 411         return supportedCapabilities;
 412     }
 413 }