X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=bgp%2Frib-impl%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fprotocol%2Fbgp%2Frib%2Fimpl%2FBGPPeer.java;h=4cbcd0cef849d7c73af7e4259ba06e723b38b0ff;hb=refs%2Fheads%2Fstable%2Fboron;hp=b91ad204690f3b842973f17d0901b6217cabeb93;hpb=04feb5a1be3ec274f867646554ceb7ef9eb1ebae;p=bgpcep.git diff --git a/bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPPeer.java b/bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPPeer.java index b91ad20469..4cbcd0cef8 100644 --- a/bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPPeer.java +++ b/bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPPeer.java @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved. + * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, @@ -7,86 +7,492 @@ */ package org.opendaylight.protocol.bgp.rib.impl; -import java.util.Set; +import static org.opendaylight.protocol.bgp.rib.impl.AdjRibInWriter.isAnnounceNone; +import static org.opendaylight.protocol.bgp.rib.impl.AdjRibInWriter.isLearnNone; -import org.opendaylight.protocol.bgp.parser.BGPSession; -import org.opendaylight.protocol.bgp.parser.BGPSessionListener; -import org.opendaylight.protocol.bgp.parser.BGPTerminationReason; +import com.google.common.base.MoreObjects; +import com.google.common.base.MoreObjects.ToStringHelper; +import com.google.common.base.Preconditions; +import com.google.common.collect.ImmutableMap; +import com.google.common.net.InetAddresses; +import com.google.common.util.concurrent.Futures; +import com.google.common.util.concurrent.ListenableFuture; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Set; +import java.util.stream.Collectors; +import javax.annotation.concurrent.GuardedBy; +import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeMXBean; +import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistration; +import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistrator; +import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpPeerState; +import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpSessionState; +import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction; +import org.opendaylight.controller.md.sal.common.api.data.TransactionChain; +import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener; +import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain; +import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.RoutedRpcRegistration; +import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry; +import org.opendaylight.protocol.bgp.parser.BGPDocumentedException; +import org.opendaylight.protocol.bgp.parser.BGPError; +import org.opendaylight.protocol.bgp.parser.impl.message.update.LocalPreferenceAttributeParser; +import org.opendaylight.protocol.bgp.parser.spi.MessageUtil; +import org.opendaylight.protocol.bgp.rib.impl.spi.RIB; +import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext; +import org.opendaylight.protocol.bgp.rib.impl.stats.peer.BGPPeerStats; +import org.opendaylight.protocol.bgp.rib.impl.stats.peer.BGPPeerStatsImpl; +import org.opendaylight.protocol.bgp.rib.impl.stats.peer.BGPSessionStats; +import org.opendaylight.protocol.bgp.rib.spi.BGPSession; +import org.opendaylight.protocol.bgp.rib.spi.BGPSessionListener; +import org.opendaylight.protocol.bgp.rib.spi.BGPTerminationReason; +import org.opendaylight.protocol.bgp.rib.spi.ExportPolicyPeerTracker; +import org.opendaylight.protocol.bgp.rib.spi.IdentifierUtils; import org.opendaylight.protocol.bgp.rib.spi.Peer; +import org.opendaylight.protocol.bgp.rib.spi.RouterIds; +import org.opendaylight.protocol.concepts.AbstractRegistration; +import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4Builder; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4Prefixes; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder; +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; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.Update; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AttributesBuilder; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.BgpAddPathTableType; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.BgpTableType; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.RouteRefresh; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.SendReceive; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.mp.capabilities.add.path.capability.AddressFamilies; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlri; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlri; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlriBuilder; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.peer.rpc.rev160322.BgpPeerRpcService; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.peer.rpc.rev160322.PeerContext; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerId; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.SimpleRoutingPolicy; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.PeerKey; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.UnicastSubsequentAddressFamily; +import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier; import org.opendaylight.yangtools.yang.binding.Notification; +import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier; import org.slf4j.Logger; import org.slf4j.LoggerFactory; -import com.google.common.base.Objects; -import com.google.common.base.Objects.ToStringHelper; -import com.google.common.base.Preconditions; -import com.google.common.collect.Sets; - /** * Class representing a peer. We have a single instance for each peer, which provides translation from BGP events into * RIB actions. */ -public final class BGPPeer implements BGPSessionListener, Peer { - private static final Logger LOG = LoggerFactory.getLogger(BGPPeer.class); - private final Set tables = Sets.newHashSet(); - private final String name; - private final RIBImpl rib; - - public BGPPeer(final RIBImpl rib, final String name) { - this.rib = Preconditions.checkNotNull(rib); - this.name = Preconditions.checkNotNull(name); - } - - @Override - public void onMessage(final BGPSession session, final Notification message) { - if (message instanceof Update) { - this.rib.updateTables(this, (Update) message); - } else { - LOG.info("Ignoring unhandled message class " + message.getClass()); - } - } - - @Override - public void onSessionUp(final BGPSession session) { - LOG.info("Session with peer {} went up with tables: {}", this.name, session.getAdvertisedTableTypes()); - - for (final BgpTableType t : session.getAdvertisedTableTypes()) { - this.tables.add(new TablesKey(t.getAfi(), t.getSafi())); - } - } - - private void cleanup() { - // FIXME: BUG-196: support graceful restart - for (final TablesKey key : this.tables) { - this.rib.clearTable(this, key); - } - - this.tables.clear(); - } - - @Override - public void onSessionDown(final BGPSession session, final Exception e) { - LOG.info("Session with peer {} went down", this.name, e); - cleanup(); - } - - @Override - public void onSessionTerminated(final BGPSession session, final BGPTerminationReason cause) { - LOG.info("Session with peer {} terminated: {}", this.name, cause); - cleanup(); - } - - @Override - public String toString() { - return addToStringAttributes(Objects.toStringHelper(this)).toString(); - } - - protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) { - toStringHelper.add("name", this.name); - toStringHelper.add("tables", this.tables); - return toStringHelper; - } +public class BGPPeer implements BGPSessionListener, Peer, BGPPeerRuntimeMXBean, TransactionChainListener { + + private static final Logger LOG = LoggerFactory.getLogger(BGPPeer.class); + + @GuardedBy("this") + private final Set tables = new HashSet<>(); + @GuardedBy("this") + private BGPSession session; + @GuardedBy("this") + private byte[] rawIdentifier; + @GuardedBy("this") + private DOMTransactionChain chain; + @GuardedBy("this") + private AdjRibInWriter ribWriter; + @GuardedBy("this") + private EffectiveRibInWriter effRibInWriter; + + private final RIB rib; + private final String name; + private BGPPeerRuntimeRegistrator registrator; + private BGPPeerRuntimeRegistration runtimeReg; + private final Map adjRibOutListenerSet = new HashMap(); + private final RpcProviderRegistry rpcRegistry; + private RoutedRpcRegistration rpcRegistration; + private final PeerRole peerRole; + private final Optional simpleRoutingPolicy; + private final BGPPeerStats peerStats; + private YangInstanceIdentifier peerIId; + private final Set tableRegistration = new HashSet<>(); + + public BGPPeer(final String name, final RIB rib, final PeerRole role, final SimpleRoutingPolicy peerStatus, final RpcProviderRegistry rpcRegistry) { + this.peerRole = role; + this.simpleRoutingPolicy = Optional.ofNullable(peerStatus); + this.rib = Preconditions.checkNotNull(rib); + this.name = name; + this.rpcRegistry = rpcRegistry; + this.peerStats = new BGPPeerStatsImpl(this.name, this.tables); + this.chain = rib.createPeerChain(this); + } + + public BGPPeer(final String name, final RIB rib, final PeerRole role, final RpcProviderRegistry rpcRegistry) { + this(name, rib, role, null, rpcRegistry); + } + + public void instantiateServiceInstance() { + // add current peer to "configured BGP peer" stats + this.rib.getRenderStats().getConfiguredPeerCounter().increaseCount(); + this.ribWriter = AdjRibInWriter.create(this.rib.getYangRibId(), this.peerRole, this.simpleRoutingPolicy, this.chain); + } + + // FIXME ListenableFuture should be used once closeServiceInstance uses wildcard too + @Override + public synchronized ListenableFuture close() { + final ListenableFuture future = releaseConnection(); + this.chain.close(); + return future; + } + + @Override + public void onMessage(final BGPSession session, final Notification msg) throws BGPDocumentedException { + if (!(msg instanceof Update) && !(msg instanceof RouteRefresh)) { + LOG.info("Ignoring unhandled message class {}", msg.getClass()); + return; + } + if (msg instanceof Update) { + onUpdateMessage((Update) msg); + } else { + onRouteRefreshMessage((RouteRefresh) msg, session); + } + } + + private void onRouteRefreshMessage(final RouteRefresh message, final BGPSession session) { + final Class rrAfi = message.getAfi(); + final Class rrSafi = message.getSafi(); + + final TablesKey key = new TablesKey(rrAfi, rrSafi); + final AdjRibOutListener listener = this.adjRibOutListenerSet.get(key); + if (listener != null) { + listener.close(); + this.adjRibOutListenerSet.remove(key); + createAdjRibOutListener(RouterIds.createPeerId(session.getBgpId()), key, listener.isMpSupported()); + } else { + LOG.info("Ignoring RouteRefresh message. Afi/Safi is not supported: {}, {}.", rrAfi, rrSafi); + } + } + + /** + * Check for presence of well known mandatory attribute LOCAL_PREF in Update message + * + * @param message Update message + * @throws BGPDocumentedException + */ + private void checkMandatoryAttributesPresence(final Update message) throws BGPDocumentedException { + if (MessageUtil.isAnyNlriPresent(message)) { + final Attributes attrs = message.getAttributes(); + if (this.peerRole == PeerRole.Ibgp && (attrs == null || attrs.getLocalPref() == null)) { + throw new BGPDocumentedException(BGPError.MANDATORY_ATTR_MISSING_MSG + "LOCAL_PREF", + BGPError.WELL_KNOWN_ATTR_MISSING, + new byte[] { LocalPreferenceAttributeParser.TYPE }); + } + } + } + + /** + * Process Update message received. + * Calls {@link #checkMandatoryAttributesPresence(Update)} to check for presence of mandatory attributes. + * + * @param message Update message + * @throws BGPDocumentedException + */ + private void onUpdateMessage(final Update message) throws BGPDocumentedException { + checkMandatoryAttributesPresence(message); + + // update AdjRibs + final Attributes attrs = message.getAttributes(); + MpReachNlri mpReach = null; + final boolean isAnyNlriAnnounced = message.getNlri() != null; + if (isAnyNlriAnnounced) { + mpReach = prefixesToMpReach(message); + } else { + mpReach = MessageUtil.getMpReachNlri(attrs); + } + if (mpReach != null) { + this.ribWriter.updateRoutes(mpReach, nextHopToAttribute(attrs, mpReach)); + } + MpUnreachNlri mpUnreach = null; + if (message.getWithdrawnRoutes() != null) { + mpUnreach = prefixesToMpUnreach(message, isAnyNlriAnnounced); + } else { + mpUnreach = MessageUtil.getMpUnreachNlri(attrs); + } + if (mpUnreach != null) { + this.ribWriter.removeRoutes(mpUnreach); + } + } + + private static Attributes nextHopToAttribute(final Attributes attrs, final MpReachNlri mpReach) { + if (attrs.getCNextHop() == null && mpReach.getCNextHop() != null) { + final AttributesBuilder attributesBuilder = new AttributesBuilder(attrs); + attributesBuilder.setCNextHop(mpReach.getCNextHop()); + return attributesBuilder.build(); + } + return attrs; + } + + /** + * Creates MPReach for the prefixes to be handled in the same way as linkstate routes + * + * @param message Update message containing prefixes in NLRI + * @return MpReachNlri with prefixes from the nlri field + */ + private static MpReachNlri prefixesToMpReach(final Update message) { + final List prefixes = new ArrayList<>(); + for (final Ipv4Prefix p : message.getNlri().getNlri()) { + prefixes.add(new Ipv4PrefixesBuilder().setPrefix(p).build()); + } + final MpReachNlriBuilder b = new MpReachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi( + UnicastSubsequentAddressFamily.class).setAdvertizedRoutes( + new AdvertizedRoutesBuilder().setDestinationType( + new DestinationIpv4CaseBuilder().setDestinationIpv4( + new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build()).build()).build()); + if (message.getAttributes() != null) { + b.setCNextHop(message.getAttributes().getCNextHop()); + } + return b.build(); + } + + /** + * Create MPUnreach for the prefixes to be handled in the same way as linkstate routes + * + * @param message Update message containing withdrawn routes + * @param isAnyNlriAnnounced + * @return MpUnreachNlri with prefixes from the withdrawn routes field + */ + private static MpUnreachNlri prefixesToMpUnreach(final Update message, final boolean isAnyNlriAnnounced) { + final List prefixes = new ArrayList<>(); + for (final Ipv4Prefix p : message.getWithdrawnRoutes().getWithdrawnRoutes()) { + boolean nlriAnounced = false; + if(isAnyNlriAnnounced) { + nlriAnounced = message.getNlri().getNlri().contains(p); + } + + if(!nlriAnounced) { + prefixes.add(new Ipv4PrefixesBuilder().setPrefix(p).build()); + } + } + return new MpUnreachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi(UnicastSubsequentAddressFamily.class).setWithdrawnRoutes( + new WithdrawnRoutesBuilder().setDestinationType( + 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( + new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build()).build()).build()).build(); + } + + @Override + public synchronized void onSessionUp(final BGPSession session) { + final List addPathTablesType = session.getAdvertisedAddPathTableTypes(); + final Set advertizedTableTypes = session.getAdvertisedTableTypes(); + LOG.info("Session with peer {} went up with tables {} and Add Path tables {}", this.name, advertizedTableTypes, addPathTablesType); + this.session = session; + + this.rawIdentifier = InetAddresses.forString(session.getBgpId().getValue()).getAddress(); + final PeerId peerId = RouterIds.createPeerId(session.getBgpId()); + + this.tables.addAll(advertizedTableTypes.stream().map(t -> new TablesKey(t.getAfi(), t.getSafi())).collect(Collectors.toList())); + final boolean announceNone = isAnnounceNone(this.simpleRoutingPolicy); + final Map addPathTableMaps = mapTableTypesFamilies(addPathTablesType); + this.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)); + + if(!announceNone) { + createAdjRibOutListener(peerId); + } + this.tables.forEach(tablesKey -> { + final ExportPolicyPeerTracker exportTracker = this.rib.getExportPolicyPeerTracker(tablesKey); + if (exportTracker != null) { + this.tableRegistration.add(exportTracker.registerPeer(peerId, addPathTableMaps.get(tablesKey), this.peerIId, this.peerRole, + this.simpleRoutingPolicy)); + } + }); + addBgp4Support(peerId, announceNone); + + if(!isLearnNone(this.simpleRoutingPolicy)) { + this.effRibInWriter = EffectiveRibInWriter.create(this.rib.getService(), this.rib.createPeerChain(this), this.peerIId, + this.rib.getImportPolicyPeerTracker(), this.rib.getRibSupportContext(), this.peerRole, + this.peerStats.getEffectiveRibInRouteCounters(), this.peerStats.getAdjRibInRouteCounters()); + } + this.ribWriter = this.ribWriter.transform(peerId, this.rib.getRibSupportContext(), this.tables, addPathTableMaps); + + // register BGP Peer stats + this.peerStats.getSessionEstablishedCounter().increaseCount(); + if (this.registrator != null) { + this.runtimeReg = this.registrator.register(this); + } + + if (this.rpcRegistry != null) { + this.rpcRegistration = this.rpcRegistry.addRoutedRpcImplementation(BgpPeerRpcService.class, new BgpPeerRpc(session, this.tables)); + final KeyedInstanceIdentifier path = + 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)); + this.rpcRegistration.registerPath(PeerContext.class, path); + } + + this.rib.getRenderStats().getConnectedPeerCounter().increaseCount(); + } + + private void createAdjRibOutListener(final PeerId peerId) { + this.tables.forEach(key->createAdjRibOutListener(peerId, key, true)); + } + + //try to add a support for old-school BGP-4, if peer did not advertise IPv4-Unicast MP capability + private void addBgp4Support(final PeerId peerId, final boolean announceNone) { + final TablesKey key = new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class); + if (this.tables.add(key) && !announceNone) { + createAdjRibOutListener(peerId, key, false); + } + } + + private void createAdjRibOutListener(final PeerId peerId, final TablesKey key, final boolean mpSupport) { + final RIBSupportContext context = this.rib.getRibSupportContext().getRIBSupportContext(key); + + // not particularly nice + if (context != null && this.session instanceof BGPSessionImpl) { + this.adjRibOutListenerSet.put(key, AdjRibOutListener.create(peerId, key, this.rib.getYangRibId(), this.rib.getCodecsRegistry(), + context.getRibSupport(), this.rib.getService(), ((BGPSessionImpl) this.session).getLimiter(), mpSupport, + this.peerStats.getAdjRibOutRouteCounters().init(key))); + } + } + + private ListenableFuture cleanup() { + // FIXME: BUG-196: support graceful + this.adjRibOutListenerSet.values().forEach(AdjRibOutListener::close); + this.adjRibOutListenerSet.clear(); + if (this.effRibInWriter != null) { + this.effRibInWriter.close(); + } + this.tables.clear(); + if (this.ribWriter != null) { + return this.ribWriter.removePeer(); + } + return Futures.immediateFuture(null); + } + + @Override + public void onSessionDown(final BGPSession session, final Exception e) { + if(e.getMessage().equals(BGPSessionImpl.END_OF_INPUT)) { + LOG.info("Session with peer {} went down", this.name); + } else { + LOG.info("Session with peer {} went down", this.name, e); + } + releaseConnection(); + } + + @Override + public void onSessionTerminated(final BGPSession session, final BGPTerminationReason cause) { + LOG.info("Session with peer {} terminated: {}", this.name, cause); + releaseConnection(); + } + + @Override + public String toString() { + return addToStringAttributes(MoreObjects.toStringHelper(this)).toString(); + } + + protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) { + toStringHelper.add("name", this.name); + toStringHelper.add("tables", this.tables); + return toStringHelper; + } + + @Override + public String getName() { + return this.name; + } + + @Override + public synchronized ListenableFuture releaseConnection() { + if (this.rpcRegistration != null) { + this.rpcRegistration.close(); + } + closeRegistration(); + final ListenableFuture future = cleanup(); + dropConnection(); + return future; + } + + private void closeRegistration() { + for (final AbstractRegistration tableCloseable : this.tableRegistration) { + tableCloseable.close(); + } + this.tableRegistration.clear(); + } + + private void dropConnection() { + if (this.runtimeReg != null) { + this.runtimeReg.close(); + this.runtimeReg = null; + } + if (this.session != null) { + try { + this.session.close(); + } catch (final Exception e) { + LOG.warn("Error closing session with peer", e); + } + this.session = null; + + this.rib.getRenderStats().getConnectedPeerCounter().decreaseCount(); + } + } + + @Override + public synchronized byte[] getRawIdentifier() { + return Arrays.copyOf(this.rawIdentifier, this.rawIdentifier.length); + } + + @Override + public void resetSession() { + releaseConnection(); + } + + @Override + public void resetStats() { + if (this.session instanceof BGPSessionStats) { + ((BGPSessionStats) this.session).resetBgpSessionStats(); + } + } + + @Override + public BgpSessionState getBgpSessionState() { + if (this.session instanceof BGPSessionStats) { + return ((BGPSessionStats) this.session).getBgpSessionState(); + } + return new BgpSessionState(); + } + + @Override + public synchronized BgpPeerState getBgpPeerState() { + return this.peerStats.getBgpPeerState(); + } + + @Override + public void onTransactionChainFailed(final TransactionChain chain, final AsyncTransaction transaction, final Throwable cause) { + LOG.error("Transaction chain failed.", cause); + this.chain.close(); + this.chain = this.rib.createPeerChain(this); + this.ribWriter = AdjRibInWriter.create(this.rib.getYangRibId(), this.peerRole, this.simpleRoutingPolicy, this.chain); + releaseConnection(); + } + + @Override + public void onTransactionChainSuccessful(final TransactionChain chain) { + LOG.debug("Transaction chain {} successfull.", chain); + } + + @Override + public void markUptodate(final TablesKey tablesKey) { + this.ribWriter.markTableUptodate(tablesKey); + } + + private static Map mapTableTypesFamilies(final List addPathTablesType) { + return ImmutableMap.copyOf(addPathTablesType.stream().collect(Collectors.toMap(af -> new TablesKey(af.getAfi(), af.getSafi()), + BgpAddPathTableType::getSendReceive))); + } }