2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
9 package org.opendaylight.protocol.bgp.rib.impl;
11 import com.google.common.base.MoreObjects;
12 import com.google.common.base.MoreObjects.ToStringHelper;
13 import com.google.common.base.Preconditions;
14 import com.google.common.collect.Lists;
15 import com.google.common.net.InetAddresses;
16 import java.util.Arrays;
17 import java.util.HashSet;
18 import java.util.List;
20 import javax.annotation.concurrent.GuardedBy;
21 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeMXBean;
22 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistration;
23 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistrator;
24 import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpPeerState;
25 import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpSessionState;
26 import org.opendaylight.controller.config.yang.bgp.rib.impl.RouteTable;
27 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
28 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
29 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
30 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
31 import org.opendaylight.protocol.bgp.rib.RibReference;
32 import org.opendaylight.protocol.bgp.rib.impl.spi.AdjRIBsOutRegistration;
33 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionStatistics;
34 import org.opendaylight.protocol.bgp.rib.impl.spi.RIB;
35 import org.opendaylight.protocol.bgp.rib.impl.spi.ReusableBGPPeer;
36 import org.opendaylight.protocol.bgp.rib.spi.BGPSession;
37 import org.opendaylight.protocol.bgp.rib.spi.BGPTerminationReason;
38 import org.opendaylight.protocol.bgp.rib.spi.Peer;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.Update;
40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.BgpTableType;
41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole;
42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
43 import org.opendaylight.yangtools.yang.binding.Notification;
44 import org.slf4j.Logger;
45 import org.slf4j.LoggerFactory;
49 * Class representing a peer. We have a single instance for each peer, which provides translation from BGP events into
52 public class BGPPeer implements ReusableBGPPeer, Peer, AutoCloseable, BGPPeerRuntimeMXBean, TransactionChainListener {
54 private static final Logger LOG = LoggerFactory.getLogger(BGPPeer.class);
57 private final Set<TablesKey> tables = new HashSet<>();
58 private final RIB rib;
59 private final String name;
62 private BGPSession session;
64 private byte[] rawIdentifier;
66 private AdjRIBsOutRegistration reg;
68 private BGPPeerRuntimeRegistrator registrator;
69 private BGPPeerRuntimeRegistration runtimeReg;
70 private long sessionEstablishedCounter = 0L;
73 private AdjRibInWriter ribWriter;
75 public BGPPeer(final String name, final RIB rib) {
76 this.rib = Preconditions.checkNotNull(rib);
79 final DOMTransactionChain chain = rib.createPeerChain(this);
80 // FIXME: make this configurable
81 final PeerRole role = PeerRole.Ibgp;
83 ribWriter = AdjRibInWriter.create(((RibReference)rib).getInstanceIdentifier().getKey(), role, chain);
87 public synchronized void close() {
89 // TODO should this perform cleanup ?
93 public void onMessage(final BGPSession session, final Notification message) {
94 if (message instanceof Update) {
95 this.rib.updateTables(this, (Update) message);
97 LOG.info("Ignoring unhandled message class {}", message.getClass());
102 public synchronized void onSessionUp(final BGPSession session) {
103 LOG.info("Session with peer {} went up with tables: {}", this.name, session.getAdvertisedTableTypes());
105 this.session = session;
106 this.rawIdentifier = InetAddresses.forString(session.getBgpId().getValue()).getAddress();
108 for (final BgpTableType t : session.getAdvertisedTableTypes()) {
109 final TablesKey key = new TablesKey(t.getAfi(), t.getSafi());
111 this.tables.add(key);
112 this.rib.initTable(this, key);
115 this.ribWriter = ribWriter.transform(session.getBgpId(), rib.getRibExtensions(), tables);
117 // Not particularly nice, but what can
118 if (session instanceof BGPSessionImpl) {
119 this.reg = this.rib.registerRIBsOut(this, new SessionRIBsOut((BGPSessionImpl) session));
121 this.sessionEstablishedCounter++;
122 if (this.registrator != null) {
123 this.runtimeReg = this.registrator.register(this);
127 private synchronized void cleanup() {
128 // FIXME: BUG-196: support graceful restart
129 this.ribWriter.cleanTables(tables);
130 for (final TablesKey key : this.tables) {
131 this.rib.clearTable(this, key);
134 if (this.reg != null) {
143 public void onSessionDown(final BGPSession session, final Exception e) {
144 LOG.info("Session with peer {} went down", this.name, e);
149 public void onSessionTerminated(final BGPSession session, final BGPTerminationReason cause) {
150 LOG.info("Session with peer {} terminated: {}", this.name, cause);
155 public String toString() {
156 return addToStringAttributes(MoreObjects.toStringHelper(this)).toString();
159 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
160 toStringHelper.add("name", this.name);
161 toStringHelper.add("tables", this.tables);
162 return toStringHelper;
166 public String getName() {
170 protected RIB getRib() {
175 public void releaseConnection() {
181 private void dropConnection() {
182 if (this.runtimeReg != null) {
183 this.runtimeReg.close();
184 this.runtimeReg = null;
186 if (this.session != null) {
187 this.session.close();
193 public boolean isSessionActive() {
194 return this.session != null;
198 public synchronized byte[] getRawIdentifier() {
199 return Arrays.copyOf(this.rawIdentifier, this.rawIdentifier.length);
203 public void resetSession() {
208 public void resetStats() {
209 if (this.session instanceof BGPSessionStatistics) {
210 ((BGPSessionStatistics) this.session).resetSessionStats();
214 public synchronized void registerRootRuntimeBean(final BGPPeerRuntimeRegistrator registrator) {
215 this.registrator = registrator;
219 public BgpSessionState getBgpSessionState() {
220 if (this.session instanceof BGPSessionStatistics) {
221 return ((BGPSessionStatistics) this.session).getBgpSesionState();
223 return new BgpSessionState();
227 public synchronized BgpPeerState getBgpPeerState() {
228 final BgpPeerState peerState = new BgpPeerState();
229 final List<RouteTable> routes = Lists.newArrayList();
230 for (final TablesKey tablesKey : this.tables) {
231 final RouteTable routeTable = new RouteTable();
232 routeTable.setTableType("afi=" + tablesKey.getAfi().getSimpleName() + ",safi=" + tablesKey.getSafi().getSimpleName());
233 routeTable.setRoutesCount(this.rib.getRoutesCount(tablesKey));
234 routes.add(routeTable);
236 peerState.setRouteTable(routes);
237 peerState.setSessionEstablishedCount(this.sessionEstablishedCounter);
242 public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction, final Throwable cause) {
243 // TODO Auto-generated method stub
248 public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
249 // TODO Auto-generated method stub