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.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.BgpNeighborStateAugmentation;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.BgpNeighborStateAugmentationBuilder;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborAfiSafiGracefulRestartStateAugmentation;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborAfiSafiGracefulRestartStateAugmentationBuilder;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborAfiSafiStateAugmentationBuilder;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborErrorHandlingStateAugmentation;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborErrorHandlingStateAugmentationBuilder;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborGracefulRestartStateAugmentation;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborGracefulRestartStateAugmentationBuilder;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborStateAugmentation;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborStateAugmentationBuilder;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.NeighborTimersStateAugmentationBuilder;
  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(convertIpAddress(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     private static IpAddress convertIpAddress(final IpAddressNoZone addr) {
 135         if (addr == null) {
 136             return null;
 137         }
 138         final Ipv4AddressNoZone ipv4 = addr.getIpv4AddressNoZone();
 139         if (ipv4 != null) {
 140             return new IpAddress(ipv4);
 141         }
 142         return new IpAddress(addr.getIpv6AddressNoZone());
 143     }
 144
 145     /**
 146      * Builds Neighbor State from BGPPeerState counters.
 147      *
 148      * @param sessionState         BGPPeerState containing Operational state counters
 149      * @param bgpPeerMessagesState message state
 150      * @return Neighbor State
 151      */
 152     public static @Nullable State buildNeighborState(final @Nullable BGPSessionState sessionState,
 153             final BGPPeerMessagesState bgpPeerMessagesState) {
 154         if (sessionState == null && bgpPeerMessagesState == null) {
 155             return null;
 156         }
 157         final StateBuilder builder = new StateBuilder();
 158         if (sessionState != null) {
 159             builder.addAugmentation(buildCapabilityState(sessionState));
 160         }
 161         if (bgpPeerMessagesState != null) {
 162             builder.addAugmentation(buildMessageState(bgpPeerMessagesState));
 163         }
 164         return builder.build();
 165     }
 166
 167     /**
 168      * Builds Neighbor State from BGPPeerState counters.
 169      *
 170      * @param neighbor BGPPeerState containing Operational state counters
 171      * @return Timer State
 172      */
 173     public static @Nullable Timers buildTimer(final @Nullable BGPTimersState neighbor) {
 174         if (neighbor == null) {
 175             return null;
 176         }
 177         // convert neighbor uptime which is in milliseconds to time-ticks which is
 178         // hundredth of a second, and handle roll-over scenario
 179         final long uptimeTicks = neighbor.getUpTime() / 10 % TIMETICK_ROLLOVER_VALUE;
 180
 181         return new TimersBuilder()
 182                 .setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group
 183                     .timers.StateBuilder()
 184                         .addAugmentation(new NeighborTimersStateAugmentationBuilder()
 185                             .setNegotiatedHoldTime(BigDecimal.valueOf(neighbor.getNegotiatedHoldTime()))
 186                             .setUptime(new Timeticks(Uint32.valueOf(uptimeTicks))).build())
 187                         .build())
 188                 .build();
 189     }
 190
 191     /**
 192      * Builds Transport State from BGPTransportState counters.
 193      *
 194      * @param neighbor BGPPeerState containing Operational state counters
 195      * @return Transport State
 196      */
 197     public static @Nullable Transport buildTransport(final @Nullable BGPTransportState neighbor) {
 198         if (neighbor == null) {
 199             return null;
 200         }
 201
 202         return new TransportBuilder().setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009
 203                 .bgp.neighbor.group.transport.StateBuilder()
 204                     .addAugmentation(new NeighborTransportStateAugmentationBuilder()
 205                         .setLocalPort(neighbor.getLocalPort())
 206                         .setRemoteAddress(convertIpAddress(neighbor.getRemoteAddress()))
 207                         .setRemotePort(neighbor.getRemotePort())
 208                         .build())
 209                     .build())
 210                 .build();
 211     }
 212
 213     /**
 214      * Builds Error Handling State from BGPPeerState counters.
 215      *
 216      * @param errorHandlingState BGPErrorHandlingState containing ErrorHandlingState Operational state counters
 217      * @return Error Handling State
 218      */
 219     public static ErrorHandling buildErrorHandling(final @Nullable BGPErrorHandlingState errorHandlingState) {
 220         if (errorHandlingState == null) {
 221             return null;
 222         }
 223         return new ErrorHandlingBuilder()
 224                 .setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group
 225                     .error.handling.StateBuilder()
 226                         .addAugmentation(buildErrorHandlingState(errorHandlingState.getErroneousUpdateReceivedCount()))
 227                         .build())
 228                 .build();
 229     }
 230
 231     /**
 232      * Builds Graceful Restart containing Graceful Restart State from BGPGracelfulRestartState counters.
 233      *
 234      * @param neighbor BGPPeerState containing Operational state counters
 235      * @return Graceful Restart
 236      */
 237     public static @NonNull GracefulRestart buildGracefulRestart(final @NonNull BGPGracelfulRestartState neighbor) {
 238         final NeighborGracefulRestartStateAugmentation gracefulRestartState =
 239                 new NeighborGracefulRestartStateAugmentationBuilder()
 240                         .setLocalRestarting(neighbor.isLocalRestarting())
 241                         .setPeerRestartTime(neighbor.getPeerRestartTime())
 242                         .setMode(neighbor.getMode())
 243                         .setPeerRestarting(neighbor.isPeerRestarting()).build();
 244
 245         return new GracefulRestartBuilder().setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp
 246                 .rev151009.bgp.graceful.restart.graceful.restart.StateBuilder()
 247                 .addAugmentation(gracefulRestartState).build()).build();
 248     }
 249
 250     /**
 251      * Builds  Neighbor Afi Safi containing AfiSafi State.
 252      *
 253      * @param neighbor BGPPeerState containing Operational state counters
 254      * @return Afi Safis
 255      */
 256     public static AfiSafis buildAfisSafis(final @NonNull BGPPeerState neighbor,
 257             final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 258         return new AfiSafisBuilder().setAfiSafi(buildAfisSafisState(neighbor.getBGPAfiSafiState(),
 259                 bgpTableTypeRegistry)).build();
 260     }
 261
 262     /**
 263      * Builds  Neighbor State containing Capabilities State, session State.
 264      *
 265      * @return Neighbor State
 266      */
 267     public static NeighborStateAugmentation buildCapabilityState(final @NonNull BGPSessionState neighbor) {
 268
 269         final List<Class<? extends BgpCapability>> supportedCapabilities = buildSupportedCapabilities(neighbor);
 270         SessionState sessionState = null;
 271         switch (neighbor.getSessionState()) {
 272             case IDLE:
 273                 sessionState = SessionState.IDLE;
 274                 break;
 275             case UP:
 276                 sessionState = SessionState.ESTABLISHED;
 277                 break;
 278             case OPEN_CONFIRM:
 279                 sessionState = SessionState.OPENCONFIRM;
 280                 break;
 281             default:
 282         }
 283         return new NeighborStateAugmentationBuilder().setSupportedCapabilities(supportedCapabilities)
 284                 .setSessionState(sessionState).build();
 285     }
 286
 287     /**
 288      * Builds Bgp Neighbor State containing Message State.
 289      *
 290      * @return BgpNeighborState containing Message State
 291      */
 292     public static @NonNull BgpNeighborStateAugmentation buildMessageState(
 293             final @NonNull BGPPeerMessagesState neighbor) {
 294         return new BgpNeighborStateAugmentationBuilder()
 295                 .setMessages(new MessagesBuilder()
 296                         .setReceived(buildMessagesReceived(neighbor))
 297                         .setSent(buildMessagesSent(neighbor)).build()).build();
 298     }
 299
 300     private static Received buildMessagesReceived(final @NonNull BGPPeerMessagesState neighbor) {
 301         return new ReceivedBuilder()
 302                 .setUPDATE(toBigInteger(neighbor.getUpdateMessagesReceivedCount()))
 303                 .setNOTIFICATION(toBigInteger(neighbor.getNotificationMessagesReceivedCount()))
 304                 .build();
 305     }
 306
 307     public static BigInteger toBigInteger(final long updateReceivedCounter) {
 308         return UnsignedLong.valueOf(updateReceivedCounter).bigIntegerValue();
 309     }
 310
 311     private static Sent buildMessagesSent(final @NonNull BGPPeerMessagesState neighbor) {
 312         return new SentBuilder()
 313                 .setUPDATE(toBigInteger(neighbor.getUpdateMessagesSentCount()))
 314                 .setNOTIFICATION(toBigInteger(neighbor.getNotificationMessagesSentCount()))
 315                 .build();
 316     }
 317
 318     /**
 319      * Builds Neighbor Error Handling State.
 320      *
 321      * @param erroneousUpdateCount erroneous Update Count
 322      * @return Error Handling State
 323      */
 324     public static @NonNull NeighborErrorHandlingStateAugmentation buildErrorHandlingState(
 325             final long erroneousUpdateCount) {
 326         return new NeighborErrorHandlingStateAugmentationBuilder()
 327                 .setErroneousUpdateMessages(erroneousUpdateCount).build();
 328     }
 329
 330     /**
 331      * Build List of afi safi containing State per Afi Safi.
 332      *
 333      * @return AfiSafi List
 334      */
 335     public static @NonNull List<AfiSafi> buildAfisSafisState(final @NonNull BGPAfiSafiState neighbor,
 336             final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 337         final Set<TablesKey> afiSafiJoin = new HashSet<>(neighbor.getAfiSafisAdvertized());
 338         afiSafiJoin.addAll(neighbor.getAfiSafisReceived());
 339         return afiSafiJoin.stream().map(tableKey -> buildAfiSafi(neighbor, tableKey, bgpTableTypeRegistry))
 340                 .filter(Objects::nonNull)
 341                 .collect(Collectors.toList());
 342     }
 343
 344     private static AfiSafi buildAfiSafi(final @NonNull BGPAfiSafiState neighbor,
 345             final @NonNull TablesKey tablesKey, final @NonNull BGPTableTypeRegistryConsumer bgpTableTypeRegistry) {
 346         final Optional<Class<? extends AfiSafiType>> afiSafi = bgpTableTypeRegistry.getAfiSafiType(tablesKey);
 347         return afiSafi.map(aClass -> new AfiSafiBuilder().setAfiSafiName(aClass)
 348                 .setState(buildAfiSafiState(neighbor, tablesKey, neighbor.isAfiSafiSupported(tablesKey)))
 349                 .setGracefulRestart(buildAfiSafiGracefulRestartState(neighbor, tablesKey)).build()).orElse(null);
 350
 351     }
 352
 353     private static org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 354             .safi.list.afi.safi.State buildAfiSafiState(final @NonNull BGPAfiSafiState neighbor,
 355             final @NonNull TablesKey tablesKey, final boolean afiSafiSupported) {
 356         final NeighborAfiSafiStateAugmentationBuilder builder = new NeighborAfiSafiStateAugmentationBuilder();
 357         builder.setActive(afiSafiSupported);
 358         if (afiSafiSupported) {
 359             builder.setPrefixes(new PrefixesBuilder()
 360                     .setInstalled(neighbor.getPrefixesInstalledCount(tablesKey))
 361                     .setReceived(neighbor.getPrefixesReceivedCount(tablesKey))
 362                     .setSent(neighbor.getPrefixesSentCount(tablesKey)).build());
 363         }
 364         return new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 365                 .safi.list.afi.safi.StateBuilder().addAugmentation(builder.build()).build();
 366     }
 367
 368     private static org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 369             .safi.list.afi.safi.GracefulRestart buildAfiSafiGracefulRestartState(
 370             final @NonNull BGPLlGracelfulRestartState neighbor, final @NonNull TablesKey tablesKey) {
 371         final NeighborAfiSafiGracefulRestartStateAugmentation builder =
 372                 new NeighborAfiSafiGracefulRestartStateAugmentationBuilder()
 373                         .setAdvertised(neighbor.isGracefulRestartAdvertized(tablesKey))
 374                         .setReceived(neighbor.isGracefulRestartReceived(tablesKey))
 375                         .setLlAdvertised(neighbor.isLlGracefulRestartAdvertised(tablesKey))
 376                         .setLlReceived(neighbor.isLlGracefulRestartReceived(tablesKey))
 377                         .setLlStaleTimer(Uint32.valueOf(neighbor.getLlGracefulRestartTimer(tablesKey))).build();
 378         return new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi
 379                 .safi.list.afi.safi.GracefulRestartBuilder().setState(new org.opendaylight.yang.gen.v1.http.openconfig
 380                 .net.yang.bgp.multiprotocol.rev151009.bgp.common.afi.safi.list.afi.safi.graceful.restart.StateBuilder()
 381                 .addAugmentation(builder).build()).build();
 382     }
 383
 384     /**
 385      * Builds List of BgpCapability supported capabilities.
 386      *
 387      * @return List containing supported capabilities
 388      */
 389     public static @NonNull List<Class<? extends BgpCapability>> buildSupportedCapabilities(
 390             final @NonNull BGPSessionState neighbor) {
 391         final List<Class<? extends BgpCapability>> supportedCapabilities = new ArrayList<>();
 392         if (neighbor.isAddPathCapabilitySupported()) {
 393             supportedCapabilities.add(ADDPATHS.class);
 394         }
 395         if (neighbor.isAsn32CapabilitySupported()) {
 396             supportedCapabilities.add(ASN32.class);
 397         }
 398         if (neighbor.isGracefulRestartCapabilitySupported()) {
 399             supportedCapabilities.add(GRACEFULRESTART.class);
 400         }
 401         if (neighbor.isMultiProtocolCapabilitySupported()) {
 402             supportedCapabilities.add(MPBGP.class);
 403         }
 404         if (neighbor.isRouterRefreshCapabilitySupported()) {
 405             supportedCapabilities.add(ROUTEREFRESH.class);
 406         }
 407         return supportedCapabilities;
 408     }
 409 }