bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPPeer.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.rib.impl;
   9
  10 import static org.opendaylight.protocol.bgp.rib.impl.AdjRibInWriter.isAnnounceNone;
  11 import static org.opendaylight.protocol.bgp.rib.impl.AdjRibInWriter.isLearnNone;
  12
  13 import com.google.common.base.MoreObjects;
  14 import com.google.common.base.MoreObjects.ToStringHelper;
  15 import com.google.common.base.Preconditions;
  16 import com.google.common.collect.Lists;
  17 import com.google.common.net.InetAddresses;
  18 import java.util.ArrayList;
  19 import java.util.Arrays;
  20 import java.util.HashMap;
  21 import java.util.HashSet;
  22 import java.util.List;
  23 import java.util.Map;
  24 import java.util.Optional;
  25 import java.util.Set;
  26 import java.util.stream.Collectors;
  27 import javax.annotation.concurrent.GuardedBy;
  28 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeMXBean;
  29 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistration;
  30 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistrator;
  31 import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpPeerState;
  32 import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpSessionState;
  33 import org.opendaylight.controller.config.yang.bgp.rib.impl.RouteTable;
  34 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  35 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
  36 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  37 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  38 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.RoutedRpcRegistration;
  39 import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
  40 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionStatistics;
  41 import org.opendaylight.protocol.bgp.rib.impl.spi.RIB;
  42 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
  43 import org.opendaylight.protocol.bgp.rib.spi.BGPSession;
  44 import org.opendaylight.protocol.bgp.rib.spi.BGPSessionListener;
  45 import org.opendaylight.protocol.bgp.rib.spi.BGPTerminationReason;
  46 import org.opendaylight.protocol.bgp.rib.spi.IdentifierUtils;
  47 import org.opendaylight.protocol.bgp.rib.spi.Peer;
  48 import org.opendaylight.protocol.bgp.rib.spi.RouterIds;
  49 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Prefix;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4Builder;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4CaseBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.Update;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AttributesBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes1;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes2;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.RouteRefresh;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.mp.capabilities.add.path.capability.AddressFamilies;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlri;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlri;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlriBuilder;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.peer.rpc.rev160322.BgpPeerRpcService;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.peer.rpc.rev160322.PeerContext;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerId;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.SimpleRoutingPolicy;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.PeerKey;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.UnicastSubsequentAddressFamily;
  78 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  79 import org.opendaylight.yangtools.yang.binding.Notification;
  80 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  81 import org.slf4j.Logger;
  82 import org.slf4j.LoggerFactory;
  83
  84 /**
  85  * Class representing a peer. We have a single instance for each peer, which provides translation from BGP events into
  86  * RIB actions.
  87  */
  88 public class BGPPeer implements BGPSessionListener, Peer, AutoCloseable, BGPPeerRuntimeMXBean, TransactionChainListener {
  89
  90     private static final Logger LOG = LoggerFactory.getLogger(BGPPeer.class);
  91
  92     @GuardedBy("this")
  93     private final Set<TablesKey> tables = new HashSet<>();
  94     @GuardedBy("this")
  95     private BGPSession session;
  96     @GuardedBy("this")
  97     private byte[] rawIdentifier;
  98     @GuardedBy("this")
  99     private DOMTransactionChain chain;
 100     @GuardedBy("this")
 101     private AdjRibInWriter ribWriter;
 102     @GuardedBy("this")
 103     private EffectiveRibInWriter effRibInWriter;
 104
 105     private final RIB rib;
 106     private final String name;
 107     private BGPPeerRuntimeRegistrator registrator;
 108     private BGPPeerRuntimeRegistration runtimeReg;
 109     private long sessionEstablishedCounter = 0L;
 110     private final Map<TablesKey, AdjRibOutListener> adjRibOutListenerSet = new HashMap();
 111     private final RpcProviderRegistry rpcRegistry;
 112     private RoutedRpcRegistration<BgpPeerRpcService> rpcRegistration;
 113     private final PeerRole peerRole;
 114     private final Optional<SimpleRoutingPolicy> simpleRoutingPolicy;
 115
 116     public BGPPeer(final String name, final RIB rib, final PeerRole role, final SimpleRoutingPolicy peerStatus, final RpcProviderRegistry rpcRegistry) {
 117         this.peerRole = role;
 118         this.simpleRoutingPolicy = Optional.ofNullable(peerStatus);
 119         this.rib = Preconditions.checkNotNull(rib);
 120         this.name = name;
 121         this.chain = rib.createPeerChain(this);
 122         this.ribWriter = AdjRibInWriter.create(rib.getYangRibId(), this.peerRole, this.simpleRoutingPolicy, this.chain);
 123         this.rpcRegistry = rpcRegistry;
 124     }
 125
 126     public BGPPeer(final String name, final RIB rib, final PeerRole role, final RpcProviderRegistry rpcRegistry) {
 127         this(name, rib, role, null, rpcRegistry);
 128     }
 129
 130     @Override
 131     public synchronized void close() {
 132         releaseConnection();
 133         this.chain.close();
 134     }
 135
 136     @Override
 137     public void onMessage(final BGPSession session, final Notification msg) {
 138         if (!(msg instanceof Update) && !(msg instanceof RouteRefresh)) {
 139             LOG.info("Ignoring unhandled message class {}", msg.getClass());
 140             return;
 141         }
 142         if (msg instanceof Update) {
 143             onUpdateMessage((Update) msg);
 144         } else {
 145             onRouteRefreshMessage((RouteRefresh) msg, session);
 146         }
 147     }
 148
 149     private void onRouteRefreshMessage(final RouteRefresh message, final BGPSession session) {
 150         final Class<? extends AddressFamily> rrAfi = message.getAfi();
 151         final Class<? extends SubsequentAddressFamily> rrSafi = message.getSafi();
 152
 153         final TablesKey key = new TablesKey(rrAfi, rrSafi);
 154         final AdjRibOutListener listener = this.adjRibOutListenerSet.get(key);
 155         if (listener != null) {
 156             listener.close();
 157             this.adjRibOutListenerSet.remove(listener);
 158             createAdjRibOutListener(RouterIds.createPeerId(session.getBgpId()), key, true);
 159         } else {
 160             LOG.info("Ignoring RouteRefresh message. Afi/Safi is not supported: {}, {}.", rrAfi, rrSafi);
 161         }
 162     }
 163
 164     private void onUpdateMessage(final Update message) {
 165         // update AdjRibs
 166         final Attributes attrs = message.getAttributes();
 167         MpReachNlri mpReach = null;
 168         final boolean isAnyNlriAnnounced = message.getNlri() != null;
 169         if (isAnyNlriAnnounced) {
 170             mpReach = prefixesToMpReach(message);
 171         } else if (attrs != null && attrs.getAugmentation(Attributes1.class) != null) {
 172             mpReach = attrs.getAugmentation(Attributes1.class).getMpReachNlri();
 173         }
 174         if (mpReach != null) {
 175             this.ribWriter.updateRoutes(mpReach, nextHopToAttribute(attrs, mpReach));
 176         }
 177         MpUnreachNlri mpUnreach = null;
 178         if (message.getWithdrawnRoutes() != null) {
 179             mpUnreach = prefixesToMpUnreach(message, isAnyNlriAnnounced);
 180         } else if (attrs != null && attrs.getAugmentation(Attributes2.class) != null) {
 181             mpUnreach = attrs.getAugmentation(Attributes2.class).getMpUnreachNlri();
 182         }
 183         if (mpUnreach != null) {
 184             this.ribWriter.removeRoutes(mpUnreach);
 185         }
 186     }
 187
 188     private static Attributes nextHopToAttribute(final Attributes attrs, final MpReachNlri mpReach) {
 189         if (attrs.getCNextHop() == null && mpReach.getCNextHop() != null) {
 190             final AttributesBuilder attributesBuilder = new AttributesBuilder(attrs);
 191             attributesBuilder.setCNextHop(mpReach.getCNextHop());
 192             return attributesBuilder.build();
 193         }
 194         return attrs;
 195     }
 196
 197     /**
 198      * Creates MPReach for the prefixes to be handled in the same way as linkstate routes
 199      *
 200      * @param message Update message containing prefixes in NLRI
 201      * @return MpReachNlri with prefixes from the nlri field
 202      */
 203     private static MpReachNlri prefixesToMpReach(final Update message) {
 204         final List<Ipv4Prefixes> prefixes = new ArrayList<>();
 205         for (final Ipv4Prefix p : message.getNlri().getNlri()) {
 206             prefixes.add(new Ipv4PrefixesBuilder().setPrefix(p).build());
 207         }
 208         final MpReachNlriBuilder b = new MpReachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi(
 209             UnicastSubsequentAddressFamily.class).setAdvertizedRoutes(
 210                 new AdvertizedRoutesBuilder().setDestinationType(
 211                     new DestinationIpv4CaseBuilder().setDestinationIpv4(
 212                         new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build()).build()).build());
 213         if (message.getAttributes() != null) {
 214             b.setCNextHop(message.getAttributes().getCNextHop());
 215         }
 216         return b.build();
 217     }
 218
 219     /**
 220      * Create MPUnreach for the prefixes to be handled in the same way as linkstate routes
 221      *
 222      * @param message Update message containing withdrawn routes
 223      * @param isAnyNlriAnnounced
 224      * @return MpUnreachNlri with prefixes from the withdrawn routes field
 225      */
 226     private static MpUnreachNlri prefixesToMpUnreach(final Update message, final boolean isAnyNlriAnnounced) {
 227         final List<Ipv4Prefixes> prefixes = new ArrayList<>();
 228         for (final Ipv4Prefix p : message.getWithdrawnRoutes().getWithdrawnRoutes()) {
 229             boolean nlriAnounced = false;
 230             if(isAnyNlriAnnounced) {
 231                 nlriAnounced = message.getNlri().getNlri().contains(p);
 232             }
 233
 234             if(!nlriAnounced) {
 235                 prefixes.add(new Ipv4PrefixesBuilder().setPrefix(p).build());
 236             }
 237         }
 238         return new MpUnreachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi(UnicastSubsequentAddressFamily.class).setWithdrawnRoutes(
 239                 new WithdrawnRoutesBuilder().setDestinationType(
 240                     new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder().setDestinationIpv4(
 241                         new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build()).build()).build()).build();
 242     }
 243
 244     @Override
 245     public synchronized void onSessionUp(final BGPSession session) {
 246         final List<AddressFamilies> addPathTablesType = session.getAdvertisedAddPathTableTypes();
 247         LOG.info("Session with peer {} went up with tables {} and Add Path tables {}", this.name, addPathTablesType,
 248             session.getAdvertisedAddPathTableTypes());
 249         this.session = session;
 250
 251         this.rawIdentifier = InetAddresses.forString(session.getBgpId().getValue()).getAddress();
 252         final PeerId peerId = RouterIds.createPeerId(session.getBgpId());
 253
 254         this.tables.addAll(this.session.getAdvertisedTableTypes().stream().map(t -> new TablesKey(t.getAfi(), t.getSafi())).collect(Collectors.toList()));
 255         final boolean announceNone = isAnnounceNone(this.simpleRoutingPolicy);
 256         if(!announceNone) {
 257             createAdjRibOutListener(peerId);
 258         }
 259         addBgp4Support(peerId, announceNone);
 260
 261         if(!isLearnNone(this.simpleRoutingPolicy)) {
 262             final YangInstanceIdentifier peerIId = this.rib.getYangRibId().node(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer.QNAME).node(IdentifierUtils.domPeerId(peerId));
 263             this.effRibInWriter = EffectiveRibInWriter.create(this.rib.getService(), this.rib.createPeerChain(this), peerIId, ((RIBImpl) this.rib).getImportPolicyPeerTracker(),
 264                 this.rib.getRibSupportContext(), this.peerRole);
 265         }
 266         this.ribWriter = this.ribWriter.transform(peerId, this.rib.getRibSupportContext(), this.tables, addPathTablesType);
 267         this.sessionEstablishedCounter++;
 268         if (this.registrator != null) {
 269             this.runtimeReg = this.registrator.register(this);
 270         }
 271
 272         if (this.rpcRegistry != null) {
 273             this.rpcRegistration = this.rpcRegistry.addRoutedRpcImplementation(BgpPeerRpcService.class, new BgpPeerRpc(session, this.tables));
 274             final KeyedInstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer, PeerKey> path =
 275                 this.rib.getInstanceIdentifier().child(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer.class, new PeerKey(peerId));
 276             this.rpcRegistration.registerPath(PeerContext.class, path);
 277         }
 278     }
 279
 280     private void createAdjRibOutListener(final PeerId peerId) {
 281         this.tables.forEach(key->createAdjRibOutListener(peerId, key, true));
 282     }
 283
 284     //try to add a support for old-school BGP-4, if peer did not advertise IPv4-Unicast MP capability
 285     private void addBgp4Support(final PeerId peerId, final boolean announceNone) {
 286         final TablesKey key = new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class);
 287         this.tables.add(key);
 288         if (!announceNone) {
 289             createAdjRibOutListener(peerId, key, false);
 290         }
 291     }
 292
 293     private void createAdjRibOutListener(final PeerId peerId, final TablesKey key, final boolean mpSupport) {
 294         final RIBSupportContext context = this.rib.getRibSupportContext().getRIBSupportContext(key);
 295
 296         // not particularly nice
 297         if (context != null && this.session instanceof BGPSessionImpl) {
 298             this.adjRibOutListenerSet.put(key, AdjRibOutListener.create(peerId, key, this.rib.getYangRibId(), this.rib.getCodecsRegistry(),
 299                 context.getRibSupport(), ((RIBImpl) this.rib).getService(), ((BGPSessionImpl) this.session).getLimiter(), mpSupport));
 300         }
 301     }
 302
 303     private synchronized void cleanup() {
 304         // FIXME: BUG-196: support graceful
 305         for (final AdjRibOutListener adjRibOutListener : this.adjRibOutListenerSet.values()) {
 306             adjRibOutListener.close();
 307         }
 308         this.adjRibOutListenerSet.clear();
 309         if (this.effRibInWriter != null) {
 310             this.effRibInWriter.close();
 311         }
 312         this.ribWriter.removePeer();
 313         this.tables.clear();
 314     }
 315
 316     @Override
 317     public void onSessionDown(final BGPSession session, final Exception e) {
 318         if(e.getMessage().equals(BGPSessionImpl.END_OF_INPUT)) {
 319             LOG.info("Session with peer {} went down", this.name);
 320         } else {
 321             LOG.info("Session with peer {} went down", this.name, e);
 322         }
 323         releaseConnection();
 324     }
 325
 326     @Override
 327     public void onSessionTerminated(final BGPSession session, final BGPTerminationReason cause) {
 328         LOG.info("Session with peer {} terminated: {}", this.name, cause);
 329         releaseConnection();
 330     }
 331
 332     @Override
 333     public String toString() {
 334         return addToStringAttributes(MoreObjects.toStringHelper(this)).toString();
 335     }
 336
 337     protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
 338         toStringHelper.add("name", this.name);
 339         toStringHelper.add("tables", this.tables);
 340         return toStringHelper;
 341     }
 342
 343     @Override
 344     public String getName() {
 345         return this.name;
 346     }
 347
 348     @Override
 349     public void releaseConnection() {
 350         if (this.rpcRegistration != null) {
 351             this.rpcRegistration.close();
 352         }
 353         addPeerToDisconnectedSharedList();
 354         cleanup();
 355         dropConnection();
 356     }
 357
 358     private void addPeerToDisconnectedSharedList() {
 359         if(this.session != null) {
 360             this.rib.getCacheDisconnectedPeers().insertDesconectedPeer(this.session.getBgpId());
 361         }
 362     }
 363
 364     @GuardedBy("this")
 365     private void dropConnection() {
 366         if (this.runtimeReg != null) {
 367             this.runtimeReg.close();
 368             this.runtimeReg = null;
 369         }
 370         if (this.session != null) {
 371             try {
 372                 this.session.close();
 373             } catch (final Exception e) {
 374                 LOG.warn("Error closing session with peer", e);
 375             }
 376             this.session = null;
 377         }
 378     }
 379
 380     @Override
 381     public boolean isSessionActive() {
 382         return this.session != null;
 383     }
 384
 385     @Override
 386     public synchronized byte[] getRawIdentifier() {
 387         return Arrays.copyOf(this.rawIdentifier, this.rawIdentifier.length);
 388     }
 389
 390     @Override
 391     public void resetSession() {
 392         releaseConnection();
 393     }
 394
 395     @Override
 396     public void resetStats() {
 397         if (this.session instanceof BGPSessionStatistics) {
 398             ((BGPSessionStatistics) this.session).resetSessionStats();
 399         }
 400     }
 401
 402     public synchronized void registerRootRuntimeBean(final BGPPeerRuntimeRegistrator registrator) {
 403         this.registrator = registrator;
 404     }
 405
 406     @Override
 407     public BgpSessionState getBgpSessionState() {
 408         if (this.session instanceof BGPSessionStatistics) {
 409             return ((BGPSessionStatistics) this.session).getBgpSesionState();
 410         }
 411         return new BgpSessionState();
 412     }
 413
 414     @Override
 415     public synchronized BgpPeerState getBgpPeerState() {
 416         final BgpPeerState peerState = new BgpPeerState();
 417         final List<RouteTable> routes = Lists.newArrayList();
 418         for (final TablesKey tablesKey : this.tables) {
 419             final RouteTable routeTable = new RouteTable();
 420             routeTable.setTableType("afi=" + tablesKey.getAfi().getSimpleName() + ",safi=" + tablesKey.getSafi().getSimpleName());
 421             routeTable.setRoutesCount(this.rib.getRoutesCount(tablesKey));
 422             routes.add(routeTable);
 423         }
 424         peerState.setRouteTable(routes);
 425         peerState.setSessionEstablishedCount(this.sessionEstablishedCounter);
 426         return peerState;
 427     }
 428
 429     @Override
 430     public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction, final Throwable cause) {
 431         LOG.error("Transaction chain failed.", cause);
 432         this.chain.close();
 433         this.chain = this.rib.createPeerChain(this);
 434         this.ribWriter = AdjRibInWriter.create(this.rib.getYangRibId(), this.peerRole, this.simpleRoutingPolicy, this.chain);
 435         releaseConnection();
 436     }
 437
 438     @Override
 439     public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
 440         LOG.debug("Transaction chain {} successfull.", chain);
 441     }
 442
 443     @Override
 444     public void markUptodate(final TablesKey tablesKey) {
 445         this.ribWriter.markTableUptodate(tablesKey);
 446     }
 447 }