BUG-6747: Race condition on peer connection
[bgpcep.git] / bgp / rib-impl / src / test / java / org / opendaylight / protocol / bgp / rib / impl / AbstractAddPathTest.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 package org.opendaylight.protocol.bgp.rib.impl;
9
10 import static org.mockito.Matchers.any;
11 import static org.mockito.Mockito.doReturn;
12 import static org.opendaylight.protocol.bgp.rib.spi.RouterIds.createPeerId;
13
14 import com.google.common.base.Optional;
15 import com.google.common.collect.Lists;
16 import com.google.common.net.InetAddresses;
17 import io.netty.bootstrap.Bootstrap;
18 import io.netty.channel.Channel;
19 import io.netty.channel.ChannelFuture;
20 import io.netty.channel.ChannelInitializer;
21 import io.netty.channel.ChannelOption;
22 import io.netty.channel.epoll.Epoll;
23 import io.netty.channel.epoll.EpollEventLoopGroup;
24 import io.netty.channel.nio.NioEventLoopGroup;
25 import io.netty.channel.socket.SocketChannel;
26 import io.netty.util.concurrent.DefaultPromise;
27 import java.net.InetAddress;
28 import java.net.InetSocketAddress;
29 import java.util.Collections;
30 import java.util.List;
31 import java.util.concurrent.ExecutionException;
32 import javassist.ClassPool;
33 import org.junit.After;
34 import org.junit.Assert;
35 import org.junit.Before;
36 import org.mockito.Mockito;
37 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
38 import org.opendaylight.controller.md.sal.binding.impl.BindingToNormalizedNodeCodec;
39 import org.opendaylight.controller.md.sal.binding.test.AbstractDataBrokerTest;
40 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
41 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
42 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
43 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
44 import org.opendaylight.protocol.bgp.inet.RIBActivator;
45 import org.opendaylight.protocol.bgp.parser.impl.BGPActivator;
46 import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionProviderContext;
47 import org.opendaylight.protocol.bgp.parser.spi.pojo.SimpleBGPExtensionProviderContext;
48 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPPeerRegistry;
49 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionPreferences;
50 import org.opendaylight.protocol.bgp.rib.spi.BGPSessionListener;
51 import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionProviderContext;
52 import org.opendaylight.protocol.bgp.rib.spi.SimpleRIBExtensionProviderContext;
53 import org.opendaylight.protocol.util.InetSocketAddressUtil;
54 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.AsNumber;
55 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
56 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
57 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.bgp.rib.rib.loc.rib.tables.routes.Ipv4RoutesCase;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4Builder;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.routes.ipv4.routes.Ipv4Route;
62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4Case;
63 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;
64 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.PathId;
65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.Update;
66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.UpdateBuilder;
67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.BgpParameters;
68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.BgpParametersBuilder;
69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.OptionalCapabilities;
70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.OptionalCapabilitiesBuilder;
71 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.optional.capabilities.CParametersBuilder;
72 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AttributesBuilder;
73 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.AsPathBuilder;
74 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.ClusterIdBuilder;
75 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.LocalPrefBuilder;
76 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.OriginBuilder;
77 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.OriginatorIdBuilder;
78 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.as.path.SegmentsBuilder;
79 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.update.message.WithdrawnRoutesBuilder;
80 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes1;
81 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes1Builder;
82 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.CParameters1;
83 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.CParameters1Builder;
84 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.SendReceive;
85 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.mp.capabilities.AddPathCapabilityBuilder;
86 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.mp.capabilities.MultiprotocolCapability;
87 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.mp.capabilities.MultiprotocolCapabilityBuilder;
88 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.mp.capabilities.add.path.capability.AddressFamiliesBuilder;
89 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlri;
90 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder;
91 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutes;
92 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
93 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.BgpRib;
94 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerId;
95 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole;
96 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer;
97 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.BgpId;
98 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.BgpOrigin;
99 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.ClusterIdentifier;
100 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily;
101 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.UnicastSubsequentAddressFamily;
102 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.Ipv4NextHopCaseBuilder;
103 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.ipv4.next.hop._case.Ipv4NextHopBuilder;
104 import org.opendaylight.yangtools.binding.data.codec.gen.impl.StreamWriterGenerator;
105 import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
106 import org.opendaylight.yangtools.sal.binding.generator.impl.GeneratedClassLoadingStrategy;
107 import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleInfoBackedContext;
108 import org.opendaylight.yangtools.sal.binding.generator.util.JavassistUtils;
109 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
110 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
111 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
112
113 class AbstractAddPathTest extends AbstractDataBrokerTest {
114     static final String RIB_ID = "127.0.0.1";
115     static final Ipv4Address PEER1 = new Ipv4Address("127.0.0.2");
116     static final Ipv4Address PEER2 = new Ipv4Address("127.0.0.3");
117     static final Ipv4Address PEER3 = new Ipv4Address("127.0.0.4");
118     static final Ipv4Address PEER4 = new Ipv4Address("127.0.0.5");
119     static final Ipv4Address PEER5 = new Ipv4Address("127.0.0.6");
120     static final Ipv4Address PEER6 = new Ipv4Address("127.0.0.7");
121     static final AsNumber AS_NUMBER = new AsNumber(72L);
122     static final int PORT = InetSocketAddressUtil.getRandomPort();
123     static final Ipv4Prefix PREFIX1 = new Ipv4Prefix("1.1.1.1/32");
124     private static final ClusterIdentifier CLUSTER_ID = new ClusterIdentifier(RIB_ID);
125     private static final PeerId PEER1_ID = createPeerId(PEER1);
126     private static final PeerId PEER2_ID = createPeerId(PEER2);
127     private static final PeerId PEER3_ID = createPeerId(PEER3);
128     private static final PeerId PEER4_ID = createPeerId(PEER4);
129     private static final PeerId PEER5_ID = createPeerId(PEER5);
130     private static final int HOLDTIMER = 2180;
131     private static final Ipv4Address NH1 = new Ipv4Address("2.2.2.2");
132     static final Update UPD_100 = createSimpleUpdate(PREFIX1, new PathId(1L), CLUSTER_ID, 100);
133     static final Update UPD_50 = createSimpleUpdate(PREFIX1, new PathId(2L), CLUSTER_ID, 50);
134     static final Update UPD_200 = createSimpleUpdate(PREFIX1, new PathId(3L), CLUSTER_ID, 200);
135     static final Update UPD_20 = createSimpleUpdate(PREFIX1, new PathId(1L), CLUSTER_ID, 20);
136     static final Update UPD_NA_100 = createSimpleUpdate(PREFIX1, null, CLUSTER_ID, 100);
137     static final Update UPD_NA_100_EBGP = createSimpleUpdateEbgp(PREFIX1, null);
138     static final Update UPD_NA_200 = createSimpleUpdate(PREFIX1, null, CLUSTER_ID, 200);
139     static final Update UPD_NA_200_EBGP = createSimpleUpdateEbgp(PREFIX1, null);
140     protected BGPExtensionProviderContext context;
141     protected SchemaContext schemaContext;
142     protected ClusterSingletonServiceProvider clusterSingletonServiceProvider;
143     BindingToNormalizedNodeCodec mappingService;
144     BGPDispatcherImpl dispatcher;
145     RIBExtensionProviderContext ribExtension;
146     private RIBActivator ribActivator;
147     private BGPActivator bgpActivator;
148     private NioEventLoopGroup worker;
149     private NioEventLoopGroup boss;
150     private org.opendaylight.protocol.bgp.inet.BGPActivator inetActivator;
151
152     @Before
153     public void setUp() throws Exception {
154         this.ribActivator = new RIBActivator();
155         this.ribExtension = new SimpleRIBExtensionProviderContext();
156
157         this.ribActivator.startRIBExtensionProvider(this.ribExtension);
158
159         this.bgpActivator = new BGPActivator();
160         this.inetActivator = new org.opendaylight.protocol.bgp.inet.BGPActivator();
161         this.context = new SimpleBGPExtensionProviderContext();
162         this.bgpActivator.start(this.context);
163         this.inetActivator.start(this.context);
164
165         this.mappingService = new BindingToNormalizedNodeCodec(GeneratedClassLoadingStrategy.getTCCLClassLoadingStrategy(),
166             new BindingNormalizedNodeCodecRegistry(StreamWriterGenerator.create(JavassistUtils.forClassPool(ClassPool.getDefault()))));
167         final ModuleInfoBackedContext moduleInfoBackedContext = ModuleInfoBackedContext.create();
168         moduleInfoBackedContext.registerModuleInfo(BindingReflections.getModuleInfo(BgpParameters.class));
169         moduleInfoBackedContext.registerModuleInfo(BindingReflections.getModuleInfo(MultiprotocolCapability.class));
170         moduleInfoBackedContext.registerModuleInfo(BindingReflections.getModuleInfo(DestinationIpv4Case.class));
171         moduleInfoBackedContext.registerModuleInfo(BindingReflections.getModuleInfo(AdvertizedRoutes.class));
172         moduleInfoBackedContext.registerModuleInfo(BindingReflections.getModuleInfo(BgpRib.class));
173         moduleInfoBackedContext.registerModuleInfo(BindingReflections.getModuleInfo(Attributes1.class));
174         moduleInfoBackedContext.registerModuleInfo(BindingReflections.getModuleInfo(MpReachNlri.class));
175         this.mappingService.onGlobalContextUpdated(moduleInfoBackedContext.tryToCreateSchemaContext().get());
176         this.schemaContext = moduleInfoBackedContext.getSchemaContext();
177
178         this.worker = new NioEventLoopGroup();
179         this.boss = new NioEventLoopGroup();
180         this.dispatcher = new BGPDispatcherImpl(this.context.getMessageRegistry(), this.boss, this.worker);
181
182         this.clusterSingletonServiceProvider = Mockito.mock(ClusterSingletonServiceProvider.class);
183         doReturn(Mockito.mock(ClusterSingletonServiceRegistration.class)).when(this.clusterSingletonServiceProvider)
184             .registerClusterSingletonService(any(ClusterSingletonService.class));
185     }
186
187     @After
188     public void tearDown() {
189         this.dispatcher.close();
190         this.worker.shutdownGracefully().awaitUninterruptibly();
191         this.boss.shutdownGracefully().awaitUninterruptibly();
192         this.mappingService.close();
193         this.ribActivator.close();
194         this.inetActivator.close();
195         this.bgpActivator.close();
196     }
197
198     void checkRibOut(final int nAddPathRoutesExpected) throws ExecutionException, InterruptedException {
199         final ReadOnlyTransaction rTx = getDataBroker().newReadOnlyTransaction();
200         final BgpRib bgpRib = rTx.read(LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(BgpRib.class)).get().get();
201         rTx.close();
202
203         //check peer's rib-out
204         for (final Peer peer : bgpRib.getRib().get(0).getPeer()) {
205             final int ribOut = getPeerRibOutSize(peer);
206             if (peer.getPeerId().equals(PEER1_ID)) {
207                 Assert.assertEquals(0, ribOut);
208             } else if (peer.getPeerId().equals(PEER2_ID)) {
209                 Assert.assertEquals(0, ribOut);
210             } else if (peer.getPeerId().equals(PEER3_ID)) {
211                 Assert.assertEquals(0, ribOut);
212             } else if (peer.getPeerId().equals(PEER4_ID)) {
213                 Assert.assertEquals(1, ribOut);
214             } else if (peer.getPeerId().equals(PEER5_ID)) {
215                 Assert.assertEquals(nAddPathRoutesExpected, ribOut);
216             } else {
217                 Assert.fail("Failed to verify " + peer);
218             }
219         }
220     }
221
222     void sendRouteAndCheckIsOnLocRib(final Channel session, final Ipv4Prefix prefix, final long localPreference, final int expectedRoutesOnDS)
223         throws InterruptedException, ExecutionException {
224         session.writeAndFlush(createSimpleUpdate(prefix, null, null, localPreference));
225         Thread.sleep(2000);
226         checkLocRib(expectedRoutesOnDS);
227
228     }
229
230     void sendWithdrawalRouteAndCheckIsOnLocRib(final Channel session, final Ipv4Prefix prefix, final long localPreference, final int expectedRoutesOnDS)
231         throws InterruptedException, ExecutionException {
232         session.writeAndFlush(createSimpleWithdrawalUpdate(prefix, localPreference));
233         Thread.sleep(2000);
234         checkLocRib(expectedRoutesOnDS);
235     }
236
237     private void checkLocRib(final int expectedRoutesOnDS) throws ExecutionException, InterruptedException {
238         final ReadOnlyTransaction rTx = getDataBroker().newReadOnlyTransaction();
239         final BgpRib bgpRib = rTx.read(LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(BgpRib.class)).get().get();
240         rTx.close();
241         final Ipv4RoutesCase routes = ((Ipv4RoutesCase) bgpRib.getRib().get(0).getLocRib().getTables().get(0).getRoutes());
242         final List<Ipv4Route> routeList = routes.getIpv4Routes().getIpv4Route();
243         Assert.assertEquals(expectedRoutesOnDS, routeList.size());
244     }
245
246     void checkPeersPresentOnDataStore(final int numberOfPeers) throws ExecutionException, InterruptedException {
247         Thread.sleep(1000);
248         final ReadOnlyTransaction rTx = getDataBroker().newReadOnlyTransaction();
249         final BgpRib bgpRib = rTx.read(LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(BgpRib.class)).get().get();
250         rTx.close();
251
252         //check 5 peers present in the DS
253         Assert.assertEquals(numberOfPeers, bgpRib.getRib().get(0).getPeer().size());
254     }
255
256     Channel createPeerSession(final Ipv4Address peer, final PeerRole peerRole, final BgpParameters nonAddPathParams, final RIBImpl ribImpl,
257         final BGPHandlerFactory hf, final SimpleSessionListener sessionListsner) throws InterruptedException, ExecutionException {
258         configurePeer(peer, ribImpl, nonAddPathParams, peerRole);
259         return connectPeer(peer, nonAddPathParams, this.dispatcher, hf, sessionListsner);
260     }
261
262     private static int getPeerRibOutSize(final Peer peer) {
263         return ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.bgp.rib.rib.peer.adj.rib.out.tables.routes.Ipv4RoutesCase) peer.getAdjRibOut().getTables().get(0).getRoutes()).getIpv4Routes().getIpv4Route().size();
264     }
265
266     private static ChannelFuture createClient(final BGPDispatcherImpl dispatcher, final InetSocketAddress remoteAddress,
267         final BGPPeerRegistry registry, final InetSocketAddress localAddress, final BGPHandlerFactory hf) throws InterruptedException {
268         final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(registry);
269
270         final Bootstrap bootstrap = dispatcher.createClientBootStrap(Optional.absent(), Epoll.isAvailable() ? new EpollEventLoopGroup() : new NioEventLoopGroup());
271         bootstrap.localAddress(localAddress);
272         bootstrap.option(ChannelOption.SO_REUSEADDR, true);
273         bootstrap.handler(new ChannelInitializer<SocketChannel>() {
274             @Override
275             protected void initChannel(final SocketChannel ch) throws Exception {
276                 ch.pipeline().addLast(hf.getDecoders());
277                 ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(ch, new DefaultPromise<>(ch.eventLoop())));
278                 ch.pipeline().addLast(hf.getEncoders());
279             }
280         });
281         return bootstrap.connect(remoteAddress).sync();
282     }
283
284     private static void configurePeer(final Ipv4Address localAddress, final RIBImpl ribImpl, final BgpParameters bgpParameters, final PeerRole peerRole) {
285         final InetAddress inetAddress = InetAddresses.forString(localAddress.getValue());
286
287         final BGPPeer bgpPeer = new BGPPeer(inetAddress.getHostAddress(), ribImpl, peerRole, null);
288         final List<BgpParameters> tlvs = Lists.newArrayList(bgpParameters);
289         StrictBGPPeerRegistry.GLOBAL.addPeer(new IpAddress(new Ipv4Address(inetAddress.getHostAddress())), bgpPeer,
290             new BGPSessionPreferences(AS_NUMBER, HOLDTIMER, new BgpId(RIB_ID),
291                 AS_NUMBER, tlvs, Optional.absent()));
292         bgpPeer.instantiateServiceInstance();
293     }
294
295     private static Channel connectPeer(final Ipv4Address localAddress, final BgpParameters bgpParameters,
296         final BGPDispatcherImpl dispatcherImpl, final BGPHandlerFactory hf, final BGPSessionListener sessionListsner) throws InterruptedException {
297         final BGPPeerRegistry peerRegistry = new StrictBGPPeerRegistry();
298         peerRegistry.addPeer(new IpAddress(new Ipv4Address(RIB_ID)), sessionListsner,
299             new BGPSessionPreferences(AS_NUMBER, HOLDTIMER, new BgpId(localAddress),
300                 AS_NUMBER, Lists.newArrayList(bgpParameters), Optional.absent()));
301
302         final ChannelFuture createClient = createClient(dispatcherImpl, new InetSocketAddress(RIB_ID, PORT), peerRegistry, new InetSocketAddress(localAddress.getValue(), PORT), hf);
303         Thread.sleep(1000);
304         return createClient.channel();
305     }
306
307     protected static BgpParameters createParameter(final boolean addPath) {
308         final OptionalCapabilities mp = new OptionalCapabilitiesBuilder().setCParameters(
309             new CParametersBuilder().addAugmentation(CParameters1.class,
310                 new CParameters1Builder().setMultiprotocolCapability(
311                     new MultiprotocolCapabilityBuilder().setAfi(Ipv4AddressFamily.class).setSafi(UnicastSubsequentAddressFamily.class)
312                         .build()).build()).build()).build();
313         final List<OptionalCapabilities> capabilities = Lists.newArrayList(mp);
314         if (addPath) {
315             final OptionalCapabilities addPathCapa = new OptionalCapabilitiesBuilder().setCParameters(
316                 new CParametersBuilder().addAugmentation(CParameters1.class,
317                     new CParameters1Builder().setAddPathCapability(
318                         new AddPathCapabilityBuilder().setAddressFamilies(Lists.newArrayList(
319                             new AddressFamiliesBuilder()
320                                 .setAfi(Ipv4AddressFamily.class)
321                                 .setSafi(UnicastSubsequentAddressFamily.class)
322                                 .setSendReceive(SendReceive.Both)
323                                 .build()))
324                             .build()).build()).build()).build();
325             capabilities.add(addPathCapa);
326         }
327         return new BgpParametersBuilder().setOptionalCapabilities(capabilities).build();
328     }
329
330     private static Update createSimpleUpdate(final Ipv4Prefix prefix, final PathId pathId, final ClusterIdentifier clusterId,
331         final long localPreference) {
332         final AttributesBuilder attBuilder = new AttributesBuilder();
333         attBuilder.setLocalPref(new LocalPrefBuilder().setPref(localPreference).build());
334         attBuilder.setOrigin(new OriginBuilder().setValue(BgpOrigin.Igp).build());
335         attBuilder.setAsPath(new AsPathBuilder().setSegments(Collections.emptyList()).build());
336         if (clusterId != null) {
337             attBuilder.setClusterId(new ClusterIdBuilder().setCluster(Collections.singletonList(clusterId)).build());
338             attBuilder.setOriginatorId(new OriginatorIdBuilder().setOriginator(new Ipv4Address(clusterId)).build());
339         }
340         addAttributeAugmentation(attBuilder, prefix, pathId);
341         return new UpdateBuilder().setAttributes(attBuilder.build()).build();
342     }
343
344     private static Update createSimpleUpdateEbgp(final Ipv4Prefix prefix, final PathId pathId) {
345         final AttributesBuilder attBuilder = new AttributesBuilder();
346         attBuilder.setOrigin(new OriginBuilder().setValue(BgpOrigin.Igp).build());
347         attBuilder.setAsPath(new AsPathBuilder().setSegments(Collections.singletonList(
348             new SegmentsBuilder().setAsSequence(Collections.singletonList(AS_NUMBER)).build())).build());
349         addAttributeAugmentation(attBuilder, prefix, pathId);
350
351         return new UpdateBuilder().setAttributes(attBuilder.build()).build();
352     }
353
354     private static void addAttributeAugmentation(final AttributesBuilder attBuilder, final Ipv4Prefix prefix, final PathId pathId) {
355         attBuilder.setUnrecognizedAttributes(Collections.emptyList());
356         attBuilder.addAugmentation(Attributes1.class,
357             new Attributes1Builder().setMpReachNlri(
358                 new MpReachNlriBuilder()
359                     .setCNextHop(new Ipv4NextHopCaseBuilder().setIpv4NextHop(new Ipv4NextHopBuilder().setGlobal(NH1).build()).build())
360                     .setAfi(Ipv4AddressFamily.class)
361                     .setSafi(UnicastSubsequentAddressFamily.class)
362                     .setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(
363                         new DestinationIpv4CaseBuilder().setDestinationIpv4(
364                             new DestinationIpv4Builder().setIpv4Prefixes(Collections.singletonList(
365                                 new Ipv4PrefixesBuilder().setPathId(pathId).setPrefix(new Ipv4Prefix(prefix)).build())).build())
366                             .build()).build())
367                     .build()).build());
368     }
369
370     private static Update createSimpleWithdrawalUpdate(final Ipv4Prefix prefix, final long localPreference) {
371         final AttributesBuilder attBuilder = new AttributesBuilder();
372         attBuilder.setLocalPref(new LocalPrefBuilder().setPref(localPreference).build());
373         attBuilder.setOrigin(new OriginBuilder().setValue(BgpOrigin.Igp).build());
374         attBuilder.setAsPath(new AsPathBuilder().setSegments(Collections.emptyList()).build());
375         attBuilder.setUnrecognizedAttributes(Collections.emptyList());
376         return new UpdateBuilder().setWithdrawnRoutes(new WithdrawnRoutesBuilder().setWithdrawnRoutes(Collections.singletonList(prefix)).build()).build();
377     }
378 }