* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-
package org.opendaylight.protocol.bgp.rib.impl;
-import com.google.common.base.Objects;
-import com.google.common.base.Objects.ToStringHelper;
+import com.google.common.base.MoreObjects;
+import com.google.common.base.MoreObjects.ToStringHelper;
import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
import com.google.common.net.InetAddresses;
-
+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.Set;
-
import javax.annotation.concurrent.GuardedBy;
-
-import org.opendaylight.protocol.bgp.rib.impl.spi.AdjRIBsOutRegistration;
+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.config.yang.bgp.rib.impl.RouteTable;
+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.protocol.bgp.rib.impl.spi.BGPSessionStatistics;
import org.opendaylight.protocol.bgp.rib.impl.spi.RIB;
-import org.opendaylight.protocol.bgp.rib.impl.spi.ReusableBGPPeer;
+import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
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.Peer;
+import org.opendaylight.protocol.bgp.rib.spi.RouterIds;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.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.Attributes1;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes2;
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.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.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.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.Notification;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-
/**
* Class representing a peer. We have a single instance for each peer, which provides translation from BGP events into
* RIB actions.
*/
-public class BGPPeer implements ReusableBGPPeer, Peer, AutoCloseable {
+public class BGPPeer implements BGPSessionListener, Peer, AutoCloseable, BGPPeerRuntimeMXBean, TransactionChainListener {
+
private static final Logger LOG = LoggerFactory.getLogger(BGPPeer.class);
@GuardedBy("this")
private final Set<TablesKey> tables = new HashSet<>();
- private final RIB rib;
- private final String name;
-
@GuardedBy("this")
private BGPSession session;
@GuardedBy("this")
private byte[] rawIdentifier;
@GuardedBy("this")
- private AdjRIBsOutRegistration reg;
+ private DOMTransactionChain chain;
+ @GuardedBy("this")
+ private AdjRibInWriter ribWriter;
+
+ private final RIB rib;
+ private final String name;
+ private BGPPeerRuntimeRegistrator registrator;
+ private BGPPeerRuntimeRegistration runtimeReg;
+ private long sessionEstablishedCounter = 0L;
+ private final Map<TablesKey, AdjRibOutListener> adjRibOutListenerSet = new HashMap();
public BGPPeer(final String name, final RIB rib) {
+ this(name, rib, PeerRole.Ibgp);
+ }
+
+ public BGPPeer(final String name, final RIB rib, final PeerRole role) {
this.rib = Preconditions.checkNotNull(rib);
this.name = name;
+ this.chain = rib.createPeerChain(this);
+ this.ribWriter = AdjRibInWriter.create(rib.getYangRibId(), role, this.chain);
}
@Override
public synchronized void close() {
- dropConnection();
- // TODO should this perform cleanup ?
+ releaseConnection();
+ this.chain.close();
}
@Override
- public void onMessage(final BGPSession session, final Notification message) {
- if (message instanceof Update) {
- this.rib.updateTables(this, (Update) message);
+ public void onMessage(final BGPSession session, final Notification msg) {
+ if (!(msg instanceof Update) && !(msg instanceof RouteRefresh)) {
+ LOG.info("Ignoring unhandled message class {}", msg.getClass());
+ return;
+ }
+ if (msg instanceof Update) {
+ onUpdateMessage((Update) msg);
} else {
- LOG.info("Ignoring unhandled message class {}", message.getClass());
+ onRouteRefreshMessage((RouteRefresh) msg, session);
+ }
+ }
+
+ private void onRouteRefreshMessage(final RouteRefresh message, final BGPSession session) {
+ final Class<? extends AddressFamily> rrAfi = message.getAfi();
+ final Class<? extends SubsequentAddressFamily> 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(listener);
+ createAdjRibOutListener(RouterIds.createPeerId(session.getBgpId()), key, true);
+ } else {
+ LOG.info("Ignoring RouteRefresh message. Afi/Safi is not supported: {}, {}.", rrAfi, rrSafi);
+ }
+ }
+
+ private void onUpdateMessage(final Update message) {
+ // update AdjRibs
+ final Attributes attrs = message.getAttributes();
+ MpReachNlri mpReach = null;
+ final boolean isAnyNlriAnnounced = message.getNlri() != null;
+ if (isAnyNlriAnnounced) {
+ mpReach = prefixesToMpReach(message);
+ } else if (attrs != null && attrs.getAugmentation(Attributes1.class) != null) {
+ mpReach = attrs.getAugmentation(Attributes1.class).getMpReachNlri();
+ }
+ if (mpReach != null) {
+ this.ribWriter.updateRoutes(mpReach, nextHopToAttribute(attrs, mpReach));
+ }
+ MpUnreachNlri mpUnreach = null;
+ if (message.getWithdrawnRoutes() != null) {
+ mpUnreach = prefixesToMpUnreach(message, isAnyNlriAnnounced);
+ } else if (attrs != null && attrs.getAugmentation(Attributes2.class) != null) {
+ mpUnreach = attrs.getAugmentation(Attributes2.class).getMpUnreachNlri();
+ }
+ 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<Ipv4Prefixes> 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<Ipv4Prefixes> 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) {
- LOG.info("Session with peer {} went up with tables: {}", this.name, session.getAdvertisedTableTypes());
-
+ final List<AddressFamilies> addPathTablesType = session.getAdvertisedAddPathTableTypes();
+ LOG.info("Session with peer {} went up with tables {} and Add Path tables {}", this.name, addPathTablesType,
+ session.getAdvertisedAddPathTableTypes());
this.session = session;
this.rawIdentifier = InetAddresses.forString(session.getBgpId().getValue()).getAddress();
+ final PeerId peerId = RouterIds.createPeerId(session.getBgpId());
+ createAdjRibOutListener(peerId);
- for (final BgpTableType t : session.getAdvertisedTableTypes()) {
- final TablesKey key = new TablesKey(t.getAfi(), t.getSafi());
-
- this.tables.add(key);
- this.rib.initTable(this, key);
+ this.ribWriter = this.ribWriter.transform(peerId, this.rib.getRibSupportContext(), this.tables, addPathTablesType, false);
+ this.sessionEstablishedCounter++;
+ if (this.registrator != null) {
+ this.runtimeReg = this.registrator.register(this);
}
+ }
- // Not particularly nice, but what can
- if (session instanceof BGPSessionImpl) {
- reg = rib.registerRIBsOut(this, new SessionRIBsOut((BGPSessionImpl) session));
+ private void createAdjRibOutListener(final PeerId peerId) {
+ for (final BgpTableType t : this.session.getAdvertisedTableTypes()) {
+ final TablesKey key = new TablesKey(t.getAfi(), t.getSafi());
+ if (this.tables.add(key)) {
+ createAdjRibOutListener(peerId, key, true);
+ }
}
+
+ addBgp4Support(peerId);
}
- private synchronized void cleanup() {
- // FIXME: BUG-196: support graceful restart
- for (final TablesKey key : this.tables) {
- this.rib.clearTable(this, key);
+ //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 TablesKey key = new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class);
+ if (this.tables.add(key)) {
+ createAdjRibOutListener(peerId, key, false);
}
+ }
+
+ private void createAdjRibOutListener(final PeerId peerId, final TablesKey key, final boolean mpSupport) {
+ final RIBSupportContext context = this.rib.getRibSupportContext().getRIBSupportContext(key);
- if (reg != null) {
- reg.close();
- reg = null;
+ // 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(), ((RIBImpl) this.rib).getService(), ((BGPSessionImpl) this.session).getLimiter(), mpSupport));
}
+ }
+ private synchronized void cleanup() {
+ // FIXME: BUG-196: support graceful
+ for (final AdjRibOutListener adjRibOutListener : this.adjRibOutListenerSet.values()) {
+ adjRibOutListener.close();
+ }
+ this.adjRibOutListenerSet.clear();
+ this.ribWriter.removePeer();
this.tables.clear();
- this.session = null;
}
@Override
public void onSessionDown(final BGPSession session, final Exception e) {
- LOG.info("Session with peer {} went down", this.name, e);
- cleanup();
+ 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);
- cleanup();
+ releaseConnection();
}
@Override
public String toString() {
- return addToStringAttributes(Objects.toStringHelper(this)).toString();
+ return addToStringAttributes(MoreObjects.toStringHelper(this)).toString();
}
protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
return this.name;
}
- protected RIB getRib() {
- return this.rib;
- }
-
@Override
public void releaseConnection() {
- dropConnection();
+ addPeerToDisconnectedSharedList();
cleanup();
+ dropConnection();
+ }
+
+ private void addPeerToDisconnectedSharedList() {
+ if(this.session != null) {
+ this.rib.getCacheDisconnectedPeers().insertDesconectedPeer(this.session.getBgpId());
+ }
}
@GuardedBy("this")
private void dropConnection() {
+ if (this.runtimeReg != null) {
+ this.runtimeReg.close();
+ this.runtimeReg = null;
+ }
if (this.session != null) {
- this.session.close();
+ try {
+ this.session.close();
+ } catch (final Exception e) {
+ LOG.warn("Error closing session with peer", e);
+ }
this.session = null;
}
}
+ @Override
+ public boolean isSessionActive() {
+ return this.session != null;
+ }
+
@Override
public synchronized byte[] getRawIdentifier() {
- return rawIdentifier;
+ return Arrays.copyOf(this.rawIdentifier, this.rawIdentifier.length);
+ }
+
+ @Override
+ public void resetSession() {
+ releaseConnection();
+ }
+
+ @Override
+ public void resetStats() {
+ if (this.session instanceof BGPSessionStatistics) {
+ ((BGPSessionStatistics) this.session).resetSessionStats();
+ }
+ }
+
+ public synchronized void registerRootRuntimeBean(final BGPPeerRuntimeRegistrator registrator) {
+ this.registrator = registrator;
+ }
+
+ @Override
+ public BgpSessionState getBgpSessionState() {
+ if (this.session instanceof BGPSessionStatistics) {
+ return ((BGPSessionStatistics) this.session).getBgpSesionState();
+ }
+ return new BgpSessionState();
+ }
+
+ @Override
+ public synchronized BgpPeerState getBgpPeerState() {
+ final BgpPeerState peerState = new BgpPeerState();
+ final List<RouteTable> routes = Lists.newArrayList();
+ for (final TablesKey tablesKey : this.tables) {
+ final RouteTable routeTable = new RouteTable();
+ routeTable.setTableType("afi=" + tablesKey.getAfi().getSimpleName() + ",safi=" + tablesKey.getSafi().getSimpleName());
+ routeTable.setRoutesCount(this.rib.getRoutesCount(tablesKey));
+ routes.add(routeTable);
+ }
+ peerState.setRouteTable(routes);
+ peerState.setSessionEstablishedCount(this.sessionEstablishedCounter);
+ return peerState;
+ }
+
+ @Override
+ public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction, final Throwable cause) {
+ LOG.error("Transaction chain failed.", cause);
+ releaseConnection();
+ this.chain.close();
+ this.chain = this.rib.createPeerChain(this);
+ }
+
+ @Override
+ public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
+ LOG.debug("Transaction chain {} successfull.", chain);
+ }
+
+ @Override
+ public void markUptodate(final TablesKey tablesKey) {
+ this.ribWriter.markTableUptodate(tablesKey);
}
}
Code Review / bgpcep.git / blobdiff