bgp/rib-impl/src/test/java/org/opendaylight/protocol/bgp/rib/impl/AddPathNPathsTest.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
   9 package org.opendaylight.protocol.bgp.rib.impl;
  10
  11 import static org.junit.Assert.assertEquals;
  12 import static org.opendaylight.protocol.util.CheckUtil.checkReceivedMessages;
  13 import static org.opendaylight.protocol.util.CheckUtil.waitFutureSuccess;
  14
  15 import com.google.common.collect.ImmutableMap;
  16 import io.netty.channel.Channel;
  17 import io.netty.channel.ChannelFuture;
  18 import java.net.InetSocketAddress;
  19 import java.util.Map;
  20 import java.util.concurrent.ExecutionException;
  21 import org.junit.After;
  22 import org.junit.Before;
  23 import org.junit.Test;
  24 import org.opendaylight.protocol.bgp.mode.api.PathSelectionMode;
  25 import org.opendaylight.protocol.bgp.mode.impl.add.n.paths.AddPathBestNPathSelection;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.open.message.BgpParameters;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev171207.PeerRole;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev171207.RibId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev171207.rib.TablesKey;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.BgpId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.UnicastSubsequentAddressFamily;
  33
  34 public class AddPathNPathsTest extends AbstractAddPathTest {
  35     private RIBImpl ribImpl;
  36     private Channel serverChannel;
  37
  38     @Before
  39     public void setUp() throws Exception {
  40         super.setUp();
  41         final TablesKey tk = new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class);
  42         final Map<TablesKey, PathSelectionMode> pathTables = ImmutableMap.of(tk,
  43                 new AddPathBestNPathSelection(2L));
  44
  45         this.ribImpl = new RIBImpl(new RibId("test-rib"),
  46             AS_NUMBER, new BgpId(RIB_ID), null, this.ribExtension, this.serverDispatcher,
  47             this.mappingService.getCodecFactory(), getDomBroker(), TABLES_TYPE, pathTables,
  48             this.ribExtension.getClassLoadingStrategy());
  49
  50         this.ribImpl.instantiateServiceInstance();
  51         this.ribImpl.onGlobalContextUpdated(this.schemaContext);
  52         final ChannelFuture channelFuture = this.serverDispatcher.createServer(new InetSocketAddress(RIB_ID, PORT));
  53         waitFutureSuccess(channelFuture);
  54         this.serverChannel = channelFuture.channel();
  55     }
  56
  57     @After
  58     public void tearDown() throws ExecutionException, InterruptedException {
  59         waitFutureSuccess(this.serverChannel.close());
  60         super.tearDown();
  61     }
  62     /*
  63      * N-Paths
  64      *                                            ___________________
  65      *                                           | ODL BGP 127.0.0.1 |
  66      * [peer://127.0.0.2; p1, lp100] --(iBGP)--> |                   | --(RR-client, non add-path) --> [Peer://127.0.0.5; (p1, lp100), (p1, lp1200)]
  67      * [peer://127.0.0.3; p1, lp200] --(iBGP)--> |                   |
  68      * [peer://127.0.0.4; p1, lp50] --(iBGP)-->  |                   | --(RR-client, add-path) --> [Peer://127.0.0.6; (p1, path-id1, lp100), (p1, path-id2, pl50), (p1, path-id3, pl200)]
  69      * [peer://127.0.0.2; p1, lp20] --(iBGP)-->  |___________________|
  70      * p1 = 1.1.1.1/32
  71      */
  72     @Test
  73     public void testUseCase1() throws Exception {
  74         final BgpParameters nonAddPathParams = createParameter(false);
  75         final BgpParameters addPathParams = createParameter(true);
  76
  77         configurePeer(PEER1, this.ribImpl, nonAddPathParams, PeerRole.Ibgp, this.serverRegistry);
  78         final BGPSessionImpl session1 = createPeerSession(PEER1, nonAddPathParams, new SimpleSessionListener());
  79
  80         configurePeer(PEER2, this.ribImpl, nonAddPathParams, PeerRole.Ibgp, this.serverRegistry);
  81        final BGPSessionImpl session2 = createPeerSession(PEER2, nonAddPathParams, new SimpleSessionListener());
  82
  83         configurePeer(PEER3, this.ribImpl, nonAddPathParams, PeerRole.Ibgp, this.serverRegistry);
  84         final BGPSessionImpl session3 = createPeerSession(PEER3, nonAddPathParams, new SimpleSessionListener());
  85
  86         final SimpleSessionListener listener4 = new SimpleSessionListener();
  87         configurePeer(PEER4, this.ribImpl, nonAddPathParams, PeerRole.RrClient, this.serverRegistry);
  88         final BGPSessionImpl session4 = createPeerSession(PEER4, nonAddPathParams, listener4);
  89
  90         final SimpleSessionListener listener5 = new SimpleSessionListener();
  91         configurePeer(PEER5, this.ribImpl, addPathParams, PeerRole.RrClient, this.serverRegistry);
  92         final BGPSessionImpl session5 = createPeerSession(PEER5, addPathParams, listener5);
  93         checkPeersPresentOnDataStore(5);
  94
  95         //new best route so far
  96         sendRouteAndCheckIsOnLocRib(session1, PREFIX1, 100, 1);
  97         checkReceivedMessages(listener4, 1);
  98         checkReceivedMessages(listener5, 1);
  99         assertEquals(UPD_100, listener5.getListMsg().get(0));
 100
 101         final SimpleSessionListener listener6 = new SimpleSessionListener();
 102         configurePeer(PEER6, this.ribImpl, nonAddPathParams, PeerRole.RrClient, this.serverRegistry);
 103         final BGPSessionImpl session6 = createPeerSession(PEER6, nonAddPathParams, listener6);
 104         checkPeersPresentOnDataStore(6);
 105         checkReceivedMessages(listener6, 1);
 106         assertEquals(UPD_NA_100, listener6.getListMsg().get(0));
 107         session6.close();
 108         checkPeersPresentOnDataStore(5);
 109
 110         //the second best route
 111         sendRouteAndCheckIsOnLocRib(session2, PREFIX1, 50, 2);
 112         checkReceivedMessages(listener4, 1);
 113         checkReceivedMessages(listener5, 2);
 114         assertEquals(UPD_50, listener5.getListMsg().get(1));
 115
 116         //new best route
 117         sendRouteAndCheckIsOnLocRib(session3, PREFIX1, 200, 2);
 118         checkReceivedMessages(listener4, 2);
 119         checkReceivedMessages(listener5, 3);
 120         assertEquals(UPD_200, listener5.getListMsg().get(2));
 121
 122         //the worst prefix, no changes
 123         sendRouteAndCheckIsOnLocRib(session2, PREFIX1, 20, 2);
 124         checkReceivedMessages(listener4, 2);
 125         checkReceivedMessages(listener5, 3);
 126
 127         //withdraw second best route, 2 advertisement (1 withdrawal) for add-path supported, none for non add path
 128         sendWithdrawalRouteAndCheckIsOnLocRib(session1, PREFIX1, 100, 2);
 129         checkReceivedMessages(listener4, 2);
 130         checkReceivedMessages(listener5, 5);
 131
 132         //we advertise again to try new test
 133         sendRouteAndCheckIsOnLocRib(session1, PREFIX1, 100, 2);
 134         checkReceivedMessages(listener4, 2);
 135         checkReceivedMessages(listener5, 6);
 136
 137         //withdraw second best route, 2 advertisement (1 withdrawal) for add-path supported, 1 withdrawal for non add path
 138         sendWithdrawalRouteAndCheckIsOnLocRib(session3, PREFIX1, 200, 2);
 139         checkReceivedMessages(listener4, 3);
 140         checkReceivedMessages(listener5, 8);
 141
 142         session1.close();
 143         session2.close();
 144         session3.close();
 145         session4.close();
 146         session5.close();
 147     }
 148 }