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.rev180329.open.message.BgpParameters;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.PeerRole;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.RibId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.BgpId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.Ipv4AddressFamily;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.UnicastSubsequentAddressFamily;
  33
  34 public class AddPathNPathsTest extends AbstractAddPathTest {
  35     private RIBImpl ribImpl;
  36     private Channel serverChannel;
  37
  38     @Override
  39     @Before
  40     public void setUp() throws Exception {
  41         super.setUp();
  42         final TablesKey tk = new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class);
  43         final Map<TablesKey, PathSelectionMode> pathTables = ImmutableMap.of(tk, new AddPathBestNPathSelection(2));
  44
  45         this.ribImpl = new RIBImpl(this.tableRegistry, new RibId("test-rib"), AS_NUMBER, new BgpId(RIB_ID),
  46                 this.ribExtension,
  47                 this.serverDispatcher, this.codecsRegistry, getDomBroker(), getDataBroker(), this.policies,
  48                 TABLES_TYPE,  pathTables);
  49
  50         this.ribImpl.instantiateServiceInstance();
  51         this.ribImpl.onGlobalContextUpdated(this.schemaService.getGlobalContext());
  52         final ChannelFuture channelFuture = this.serverDispatcher.createServer(new InetSocketAddress(RIB_ID, PORT));
  53         waitFutureSuccess(channelFuture);
  54         this.serverChannel = channelFuture.channel();
  55     }
  56
  57     @Override
  58     @After
  59     public void tearDown() throws ExecutionException, InterruptedException {
  60         waitFutureSuccess(this.serverChannel.close());
  61         super.tearDown();
  62     }
  63     /*
  64      * N-Paths
  65      *                                            ___________________
  66      *                                           | ODL BGP 127.0.0.1 |
  67      * [peer://127.0.0.2; p1, lp100] --(iBGP)--> |                   | --(RR-client, non add-path) --> [Peer://127.0.0.5; (p1, lp100), (p1, lp1200)]
  68      * [peer://127.0.0.3; p1, lp200] --(iBGP)--> |                   |
  69      * [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)]
  70      * [peer://127.0.0.2; p1, lp20] --(iBGP)-->  |___________________|
  71      * p1 = 1.1.1.1/32
  72      */
  73     @Test
  74     public void testUseCase1() throws Exception {
  75         final BgpParameters nonAddPathParams = createParameter(false);
  76         final BgpParameters addPathParams = createParameter(true);
  77
  78         configurePeer(this.tableRegistry, PEER1, this.ribImpl, nonAddPathParams, PeerRole.Ibgp, this.serverRegistry);
  79         final BGPSessionImpl session1 = createPeerSession(PEER1, nonAddPathParams, new SimpleSessionListener());
  80
  81         configurePeer(this.tableRegistry, PEER2, this.ribImpl, nonAddPathParams, PeerRole.Ibgp, this.serverRegistry);
  82        final BGPSessionImpl session2 = createPeerSession(PEER2, nonAddPathParams, new SimpleSessionListener());
  83
  84         configurePeer(this.tableRegistry, PEER3, this.ribImpl, nonAddPathParams, PeerRole.Ibgp, this.serverRegistry);
  85         final BGPSessionImpl session3 = createPeerSession(PEER3, nonAddPathParams, new SimpleSessionListener());
  86
  87         final SimpleSessionListener listener4 = new SimpleSessionListener();
  88         configurePeer(this.tableRegistry, PEER4, this.ribImpl, nonAddPathParams, PeerRole.RrClient,
  89                 this.serverRegistry);
  90         final BGPSessionImpl session4 = createPeerSession(PEER4, nonAddPathParams, listener4);
  91
  92         final SimpleSessionListener listener5 = new SimpleSessionListener();
  93         configurePeer(this.tableRegistry, PEER5, this.ribImpl, addPathParams, PeerRole.RrClient, this.serverRegistry);
  94         final BGPSessionImpl session5 = createPeerSession(PEER5, addPathParams, listener5);
  95         checkPeersPresentOnDataStore(5);
  96
  97         //new best route so far
  98         sendRouteAndCheckIsOnLocRib(session1, PREFIX1, 100, 1);
  99         checkReceivedMessages(listener4, 2);
 100         checkReceivedMessages(listener5, 2);
 101         assertEquals(UPD_100, listener5.getListMsg().get(1));
 102
 103         final SimpleSessionListener listener6 = new SimpleSessionListener();
 104         configurePeer(this.tableRegistry, PEER6, this.ribImpl, nonAddPathParams, PeerRole.RrClient,
 105                 this.serverRegistry);
 106         final BGPSessionImpl session6 = createPeerSession(PEER6, nonAddPathParams, listener6);
 107         checkPeersPresentOnDataStore(6);
 108         checkReceivedMessages(listener6, 2);
 109         assertEquals(UPD_NA_100, listener6.getListMsg().get(1));
 110         session6.close();
 111         checkPeersPresentOnDataStore(5);
 112
 113         //the second best route
 114         sendRouteAndCheckIsOnLocRib(session2, PREFIX1, 50, 2);
 115         checkReceivedMessages(listener4, 2);
 116         checkReceivedMessages(listener5, 3);
 117         assertEquals(UPD_50, listener5.getListMsg().get(2));
 118
 119         //new best route
 120         sendRouteAndCheckIsOnLocRib(session3, PREFIX1, 200, 2);
 121         checkReceivedMessages(listener4, 3);
 122         checkReceivedMessages(listener5, 4);
 123         assertEquals(UPD_200, listener5.getListMsg().get(3));
 124
 125         //the worst prefix, no changes
 126         sendRouteAndCheckIsOnLocRib(session2, PREFIX1, 20, 2);
 127         checkReceivedMessages(listener4, 3);
 128         checkReceivedMessages(listener5, 4);
 129
 130         //withdraw second best route, 2 advertisement (1 withdrawal) for add-path supported, none for non add path
 131         sendWithdrawalRouteAndCheckIsOnLocRib(session1, PREFIX1, 100, 2);
 132         checkReceivedMessages(listener4, 3);
 133         checkReceivedMessages(listener5, 6);
 134
 135         //we advertise again to try new test
 136         sendRouteAndCheckIsOnLocRib(session1, PREFIX1, 100, 2);
 137         checkReceivedMessages(listener4, 3);
 138         checkReceivedMessages(listener5, 7);
 139
 140         //withdraw second best route, 2 advertisement (1 withdrawal) for add-path supported,
 141         // 1 withdrawal for non add path
 142         sendWithdrawalRouteAndCheckIsOnLocRib(session3, PREFIX1, 200, 2);
 143         checkReceivedMessages(listener4, 4);
 144         checkReceivedMessages(listener5, 9);
 145
 146         session1.close();
 147         session2.close();
 148         session3.close();
 149         session4.close();
 150         session5.close();
 151     }
 152 }