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