Examples with DbusKeyCompositeFilterConfig com.linkedin.databus2.core.filter.DbusKeyCompositeFilterConfig used on opensource projects

Example 11 with DbusKeyCompositeFilterConfig

use of com.linkedin.databus2.core.filter.DbusKeyCompositeFilterConfig in project databus by linkedin.

the class MockRemoteExceptionHandler method testRelayPullerThreadV3WithFilter.

// make sure the filter is passed along to the doRequestStream call
@Test
public void testRelayPullerThreadV3WithFilter() throws Exception {
    RelayPullThreadBuilder bldr = new RelayPullThreadBuilder(false, false);
    // create filter
    DbusKeyCompositeFilterConfig filterConfig = createFakeFilter();
    bldr.setFilterConfig(filterConfig);
    RelayPullThread relayPuller = bldr.createRelayPullThread();
    relayPuller.getComponentStatus().start();
    ConnectionState connState = relayPuller.getConnectionState();
    connState.switchToPickServer();
    testTransitionCase(relayPuller, StateId.PICK_SERVER, StateId.REQUEST_SOURCES);
    // get the created connection
    MockRelayConnection conn = (MockRelayConnection) relayPuller.getLastOpenConnection();
    conn.setProtocolVersion(3);
    relayPuller.getMessageQueue().clear();
    testTransitionCase(relayPuller, StateId.REQUEST_SOURCES, StateId.SOURCES_RESPONSE_SUCCESS);
    relayPuller.getMessageQueue().clear();
    testTransitionCase(relayPuller, StateId.SOURCES_RESPONSE_SUCCESS, StateId.REQUEST_REGISTER);
    relayPuller.getMessageQueue().clear();
    testTransitionCase(relayPuller, StateId.REQUEST_REGISTER, StateId.REGISTER_RESPONSE_SUCCESS);
    relayPuller.getMessageQueue().clear();
    testTransitionCase(relayPuller, StateId.REGISTER_RESPONSE_SUCCESS, StateId.REQUEST_STREAM);
    relayPuller.getMessageQueue().clear();
    testTransitionCase(relayPuller, StateId.REQUEST_STREAM, StateId.STREAM_REQUEST_SUCCESS);
    DbusKeyCompositeFilter filter = conn.getRelayFilter();
    Assert.assertNotNull(filter);
    // get DbusKeyFilter that we put in
    KeyFilterConfigHolder configHolder = filterConfig.getConfigMap().values().iterator().next();
    DbusKeyFilter inFilter = new DbusKeyFilter(configHolder);
    // get filter from the connection
    Assert.assertEquals(filter.getFilterMap().size(), 1, "1 filter in the composite filter");
    Assert.assertTrue(filter.getFilterMap().entrySet().iterator().hasNext(), "has one filter");
    DbusKeyFilter newFilter = filter.getFilterMap().values().iterator().next();
    //compare them
    boolean eq = inFilter.getPartitionType() == newFilter.getPartitionType() && inFilter.getFilters().size() == newFilter.getFilters().size();
    Assert.assertTrue(eq, "Same Filter");
}

Example 12 with DbusKeyCompositeFilterConfig

use of com.linkedin.databus2.core.filter.DbusKeyCompositeFilterConfig in project databus by linkedin.

the class MockRemoteExceptionHandler method testRelayPendingEvent.

@Test(groups = { "small", "functional" })
public void testRelayPendingEvent() throws Exception {
    final Logger log = Logger.getLogger("TestRelayPullThread.testRelayPendingEvent");
    log.setLevel(Level.INFO);
    log.info("-------------- start -------------------");
    //set a clientReadBufferSize equal to maxSize ; this is also used to generate an event larger than what can fit in buffer
    final int clientReadBufferSize = 100000;
    //set initReadBufferSize to a value greater than default averageEventSize which is 20K but lesser than 0.25*maxSize.
    //See DbsuEventBuffer.Config.DEFAULT_AVERAGE_EVENT_SIZE
    final int averageEventSize = 22500;
    List<String> sources = Arrays.asList("source1");
    Properties clientProps = new Properties();
    clientProps.setProperty("client.runtime.bootstrap.enabled", "false");
    clientProps.setProperty("client.runtime.relay(1).name", "relay1");
    clientProps.setProperty("client.runtime.relay(1).port", "10001");
    clientProps.setProperty("client.runtime.relay(1).sources", "source1");
    clientProps.setProperty("client.connectionDefaults.eventBuffer.maxSize", Integer.toString(clientReadBufferSize));
    //this setting should have no effect
    clientProps.setProperty("client.connectionDefaults.eventBuffer.readBufferSize", Integer.toString(clientReadBufferSize));
    //readBufferSize init size will be set to this value
    clientProps.setProperty("client.connectionDefaults.eventBuffer.averageEventSize", Integer.toString(averageEventSize));
    //set a high value of freeBufferThreshold which is unsafe; this setting should fail
    clientProps.setProperty("client.connectionDefaults.freeBufferThreshold", "100000");
    DatabusHttpClientImpl client = new DatabusHttpClientImpl("client.", clientProps);
    Assert.assertNotNull(client, "client instantiation ok");
    final DatabusHttpClientImpl.StaticConfig clientConf = client.getClientStaticConfig();
    final DatabusSourcesConnection.StaticConfig srcConnConf = clientConf.getConnectionDefaults();
    DatabusHttpClientImpl.RuntimeConfig clientRtConf = clientConf.getRuntime().build();
    DbusEventBuffer.StaticConfig bufferConf = clientConf.getConnectionDefaults().getEventBuffer();
    log.info("Buffer size=" + bufferConf.getMaxSize() + " readBufferSize=" + bufferConf.getReadBufferSize() + " maxEventSize=" + bufferConf.getMaxEventSize());
    Assert.assertEquals(bufferConf.getReadBufferSize(), averageEventSize);
    //This should be equal to the maxEventSize if defaults are used for maxEventSize
    Assert.assertTrue(bufferConf.getReadBufferSize() < bufferConf.getMaxEventSize());
    Assert.assertEquals(clientConf.getConnectionDefaults().getFreeBufferThreshold(), clientConf.getConnectionDefaults().getFreeBufferThreshold());
    DbusEventBuffer relayBuffer = new DbusEventBuffer(bufferConf);
    AtomicInteger serverIdx = new AtomicInteger(-1);
    // just one relay defined in our clientProps
    Set<ServerInfo> relays = clientRtConf.getRelaysSet();
    List<ServerInfo> relayOrder = new ArrayList<ServerInfo>(relays);
    List<IdNamePair> sourcesResponse = new ArrayList<IdNamePair>();
    sourcesResponse.add(new IdNamePair(1L, "source1"));
    RegisterResponseEntry rre1 = new RegisterResponseEntry(1L, (short) 1, SCHEMA$.toString());
    final HashMap<Long, List<RegisterResponseEntry>> registerResponseSources = // mapping of sourceId to list of schema versions for that ID
    new HashMap<Long, List<RegisterResponseEntry>>();
    registerResponseSources.put(1L, Arrays.asList(rre1));
    ChunkedBodyReadableByteChannel channel = new MockChunkedBodyReadableByteChannel(clientReadBufferSize + 10);
    final MockRelayConnection mockConn = new MockRelayConnection(sourcesResponse, registerResponseSources, channel, serverIdx);
    DatabusRelayConnectionFactory mockConnFactory = EasyMock.createMock("mockRelayFactory", DatabusRelayConnectionFactory.class);
    EasyMock.expect(mockConnFactory.createRelayConnection(serverNameMatcher(serverIdx, relayOrder), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(mockConn).times(1);
    EasyMock.replay(mockConnFactory);
    List<DatabusSubscription> sourcesSubList = DatabusSubscription.createSubscriptionList(sources);
    //Dummy connection object as expected by the puller thread
    // Note that in this case, it is ok to pass Set<relays> as all the relays serve the same source
    //"source1"
    ConnectionStateFactory connStateFactory = new ConnectionStateFactory(sources);
    DatabusSourcesConnection sourcesConn = new DatabusSourcesConnection(srcConnConf, sourcesSubList, relays, null, null, null, relayBuffer, null, Executors.newCachedThreadPool(), null, null, null, null, null, null, null, mockConnFactory, null, null, null, null, new DbusEventV1Factory(), connStateFactory);
    final RelayPullThread relayPuller = new RelayPullThread("RelayPuller", sourcesConn, relayBuffer, connStateFactory, relays, new ArrayList<DbusKeyCompositeFilterConfig>(), !clientConf.getRuntime().getBootstrap().isEnabled(), clientConf.isReadLatestScnOnErrorEnabled(), clientConf.getPullerBufferUtilizationPct(), Integer.MAX_VALUE, ManagementFactory.getPlatformMBeanServer(), new DbusEventV1Factory(), null);
    final MockRemoteExceptionHandler mockRemoteExceptionHandler = new MockRemoteExceptionHandler(sourcesConn, relayBuffer, relayPuller);
    Field field = relayPuller.getClass().getDeclaredField("_remoteExceptionHandler");
    field.setAccessible(true);
    field.set(relayPuller, mockRemoteExceptionHandler);
    mockConn.setCallback(relayPuller);
    //Let the show begin
    Thread relayPullerThread = new Thread(relayPuller);
    relayPullerThread.setDaemon(true);
    relayPullerThread.start();
    relayPuller.enqueueMessage(LifecycleMessage.createStartMessage());
    // We will try the same relay 3 times and then our remote exception handler will be invoked.
    TestUtil.assertWithBackoff(new ConditionCheck() {

        @Override
        public boolean check() {
            return relayPuller.getComponentStatus().getStatus() == Status.SUSPENDED_ON_ERROR;
        }
    }, "Reached SUSPEND_ON_ERROR state ", 500, log);
    EasyMock.verify(mockConnFactory);
    relayPuller.enqueueMessage(LifecycleMessage.createShutdownMessage());
    relayPuller.awaitShutdown();
    log.info("------------ done --------------");
}

Example 13 with DbusKeyCompositeFilterConfig

use of com.linkedin.databus2.core.filter.DbusKeyCompositeFilterConfig in project databus by linkedin.

the class MockBootstrapConnection method createBootstrapPullThread.

private BootstrapPullThread createBootstrapPullThread(boolean failBsConnection, boolean throwBSConnException, boolean muteTransition, boolean readDataThrowException, boolean readDataException, String exceptionName, int freeReadSpace, int numBytesRead, boolean phaseCompleted, long startScn, long targetScn, String... sourceNames) throws Exception {
    List<String> sources = Arrays.asList(sourceNames);
    Properties clientProps = new Properties();
    clientProps.setProperty("client.container.httpPort", "0");
    clientProps.setProperty("client.container.jmx.rmiEnabled", "false");
    clientProps.setProperty("client.runtime.bootstrap.enabled", "true");
    clientProps.setProperty("client.runtime.bootstrap.service(1).name", "bs1");
    clientProps.setProperty("client.runtime.bootstrap.service(1).host", "localhost");
    clientProps.setProperty("client.runtime.bootstrap.service(1).port", "10001");
    clientProps.setProperty("client.runtime.bootstrap.service(1).sources", "source1");
    clientProps.setProperty("client.runtime.bootstrap.service(2).name", "bs2");
    clientProps.setProperty("client.runtime.bootstrap.service(2).host", "localhost");
    clientProps.setProperty("client.runtime.bootstrap.service(2).port", "10002");
    clientProps.setProperty("client.runtime.bootstrap.service(2).sources", "source1");
    clientProps.setProperty("client.runtime.bootstrap.service(3).name", "bs3");
    clientProps.setProperty("client.runtime.bootstrap.service(3).host", "localhost");
    clientProps.setProperty("client.runtime.bootstrap.service(3).port", "10003");
    clientProps.setProperty("client.runtime.bootstrap.service(3).sources", "source1");
    clientProps.setProperty("client.runtime.relay(1).name", "relay1");
    clientProps.setProperty("client.runtime.relay(1).port", "10001");
    clientProps.setProperty("client.runtime.relay(1).sources", "source1");
    clientProps.setProperty("client.runtime.relay(2).name", "relay2");
    clientProps.setProperty("client.runtime.relay(2).port", "10002");
    clientProps.setProperty("client.runtime.relay(2).sources", "source1");
    clientProps.setProperty("client.runtime.relay(3).name", "relay3");
    clientProps.setProperty("client.runtime.relay(3).port", "10003");
    clientProps.setProperty("client.runtime.relay(3).sources", "source1");
    clientProps.setProperty("client.connectionDefaults.eventBuffer.maxSize", "100000");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.maxRetryNum", "9");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.sleepIncFactor", "1.0");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.sleepIncDelta", "1");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.initSleep", "1");
    DatabusHttpClientImpl.Config clientConfBuilder = new DatabusHttpClientImpl.Config();
    ConfigLoader<DatabusHttpClientImpl.StaticConfig> configLoader = new ConfigLoader<DatabusHttpClientImpl.StaticConfig>("client.", clientConfBuilder);
    configLoader.loadConfig(clientProps);
    DatabusHttpClientImpl.StaticConfig clientConf = clientConfBuilder.build();
    DatabusSourcesConnection.StaticConfig srcConnConf = clientConf.getConnectionDefaults();
    DatabusHttpClientImpl client = new DatabusHttpClientImpl(clientConf);
    client.registerDatabusBootstrapListener(new LoggingConsumer(), null, "source1");
    Assert.assertNotNull(client, "client instantiation ok");
    DatabusHttpClientImpl.RuntimeConfig clientRtConf = clientConf.getRuntime().build();
    //we keep the index of the next server we expect to see
    AtomicInteger serverIdx = new AtomicInteger(-1);
    //generate the order in which we should see the servers
    List<ServerInfo> relayOrder = new ArrayList<ServerInfo>(clientRtConf.getRelays());
    if (LOG.isInfoEnabled()) {
        StringBuilder sb = new StringBuilder();
        for (ServerInfo serverInfo : relayOrder) {
            sb.append(serverInfo.getName());
            sb.append(" ");
        }
        LOG.info("Relay order:" + sb.toString());
    }
    List<IdNamePair> sourcesResponse = new ArrayList<IdNamePair>();
    sourcesResponse.add(new IdNamePair(1L, "source1"));
    Map<Long, List<RegisterResponseEntry>> registerResponse = new HashMap<Long, List<RegisterResponseEntry>>();
    List<RegisterResponseEntry> regResponse = new ArrayList<RegisterResponseEntry>();
    regResponse.add(new RegisterResponseEntry(1L, (short) 1, SCHEMA$.toString()));
    registerResponse.put(1L, regResponse);
    ChunkedBodyReadableByteChannel channel = EasyMock.createMock(ChunkedBodyReadableByteChannel.class);
    if (!readDataException) {
        EasyMock.expect(channel.getMetadata("x-dbus-error-cause")).andReturn(null).anyTimes();
        EasyMock.expect(channel.getMetadata("x-dbus-req-id")).andReturn(null).anyTimes();
        EasyMock.expect(channel.getMetadata("x-dbus-error")).andReturn(null).anyTimes();
    } else {
        EasyMock.expect(channel.getMetadata("x-dbus-error-cause")).andReturn(exceptionName).anyTimes();
        EasyMock.expect(channel.getMetadata("x-dbus-req-id")).andReturn(exceptionName).anyTimes();
        EasyMock.expect(channel.getMetadata("x-dbus-error")).andReturn(exceptionName).anyTimes();
    }
    if (phaseCompleted)
        EasyMock.expect(channel.getMetadata("PhaseCompleted")).andReturn("true").anyTimes();
    else
        EasyMock.expect(channel.getMetadata("PhaseCompleted")).andReturn(null).anyTimes();
    EasyMock.replay(channel);
    DbusEventBuffer dbusBuffer = EasyMock.createMock(DbusEventBuffer.class);
    dbusBuffer.endEvents(false, -1, false, false, null);
    EasyMock.expectLastCall().anyTimes();
    EasyMock.expect(dbusBuffer.injectEvent(EasyMock.<DbusEventInternalReadable>notNull())).andReturn(true).anyTimes();
    EasyMock.expect(dbusBuffer.getEventSerializationVersion()).andReturn(DbusEventFactory.DBUS_EVENT_V1).anyTimes();
    EasyMock.expect(dbusBuffer.readEvents(EasyMock.<ReadableByteChannel>notNull(), org.easymock.EasyMock.<List<InternalDatabusEventsListener>>notNull(), org.easymock.EasyMock.<DbusEventsStatisticsCollector>isNull())).andReturn(numBytesRead).anyTimes();
    if (readDataThrowException) {
        EasyMock.expect(dbusBuffer.readEvents(EasyMock.<ReadableByteChannel>notNull())).andThrow(new RuntimeException("dummy")).anyTimes();
    } else {
        EasyMock.expect(dbusBuffer.readEvents(EasyMock.<ReadableByteChannel>notNull())).andReturn(numBytesRead).anyTimes();
    }
    EasyMock.expect(dbusBuffer.acquireIterator(EasyMock.<String>notNull())).andReturn(null).anyTimes();
    dbusBuffer.waitForFreeSpace((int) (10000 * 100.0 / clientConf.getPullerBufferUtilizationPct()));
    EasyMock.expectLastCall().anyTimes();
    EasyMock.expect(dbusBuffer.getBufferFreeReadSpace()).andReturn(freeReadSpace).anyTimes();
    EasyMock.replay(dbusBuffer);
    //This guy succeeds on /sources but fails on /register
    MockBootstrapConnection mockSuccessConn = new MockBootstrapConnection(startScn, targetScn, channel, serverIdx, muteTransition);
    DatabusBootstrapConnectionFactory mockConnFactory = org.easymock.EasyMock.createMock("mockRelayFactory", DatabusBootstrapConnectionFactory.class);
    if (throwBSConnException) {
        EasyMock.expect(mockConnFactory.createConnection(EasyMock.<ServerInfo>notNull(), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andThrow(new RuntimeException("Mock Error")).anyTimes();
    } else if (failBsConnection) {
        EasyMock.expect(mockConnFactory.createConnection(EasyMock.<ServerInfo>notNull(), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(null).anyTimes();
    } else {
        EasyMock.expect(mockConnFactory.createConnection(EasyMock.<ServerInfo>notNull(), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(mockSuccessConn).anyTimes();
    }
    List<DatabusSubscription> sourcesSubList = DatabusSubscription.createSubscriptionList(sources);
    // Create ConnectionState
    ConnectionStateFactory connStateFactory = new ConnectionStateFactory(sources);
    // Mock Bootstrap Puller
    RelayPullThread mockRelayPuller = EasyMock.createMock("rpt", RelayPullThread.class);
    mockRelayPuller.enqueueMessage(EasyMock.notNull());
    EasyMock.expectLastCall().anyTimes();
    // Mock Relay Dispatcher
    BootstrapDispatcher mockDispatcher = EasyMock.createMock("rd", BootstrapDispatcher.class);
    mockDispatcher.enqueueMessage(EasyMock.notNull());
    EasyMock.expectLastCall().anyTimes();
    //Set up mock for sources connection
    DatabusSourcesConnection sourcesConn2 = EasyMock.createMock(DatabusSourcesConnection.class);
    EasyMock.expect(sourcesConn2.getSourcesNames()).andReturn(Arrays.asList("source1")).anyTimes();
    EasyMock.expect(sourcesConn2.getSubscriptions()).andReturn(sourcesSubList).anyTimes();
    EasyMock.expect(sourcesConn2.getConnectionConfig()).andReturn(srcConnConf).anyTimes();
    EasyMock.expect(sourcesConn2.getConnectionStatus()).andReturn(new DatabusComponentStatus("dummy")).anyTimes();
    EasyMock.expect(sourcesConn2.getLocalRelayCallsStatsCollector()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getRelayCallsStatsCollector()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getUnifiedClientStats()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapConnFactory()).andReturn(mockConnFactory).anyTimes();
    EasyMock.expect(sourcesConn2.loadPersistentCheckpoint()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getDataEventsBuffer()).andReturn(dbusBuffer).anyTimes();
    EasyMock.expect(sourcesConn2.isBootstrapEnabled()).andReturn(true).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapRegistrations()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapServices()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapEventsStatsCollector()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getRelayPullThread()).andReturn(mockRelayPuller).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapDispatcher()).andReturn(mockDispatcher).anyTimes();
    EasyMock.makeThreadSafe(mockConnFactory, true);
    EasyMock.makeThreadSafe(mockDispatcher, true);
    EasyMock.makeThreadSafe(mockRelayPuller, true);
    EasyMock.makeThreadSafe(sourcesConn2, true);
    EasyMock.replay(mockConnFactory);
    EasyMock.replay(sourcesConn2);
    EasyMock.replay(mockDispatcher);
    EasyMock.replay(mockRelayPuller);
    BootstrapPullThread bsPuller = new BootstrapPullThread("RelayPuller", sourcesConn2, dbusBuffer, connStateFactory, clientRtConf.getBootstrap().getServicesSet(), new ArrayList<DbusKeyCompositeFilterConfig>(), clientConf.getPullerBufferUtilizationPct(), null, new DbusEventV2Factory(), null, null);
    mockSuccessConn.setCallback(bsPuller);
    return bsPuller;
}

Example 14 with DbusKeyCompositeFilterConfig

use of com.linkedin.databus2.core.filter.DbusKeyCompositeFilterConfig in project databus by linkedin.

the class MockRemoteExceptionHandler method testShutdownRace.

@Test
public /**
   * DDSDBUS-1904: test a race condition between shutting down a connection and a reconnect to the
   * relay which may cause a Netty connection to be left open after the RelayPuller shutdown.
   * The idea is to trigger a shutdown exactly while we are trying to connect to a relay. We achieve
   * that by rigging MockRelayConnection to call RelayPuller.shutdown() right before responding
   * to requestSources();
   *  */
void testShutdownRace() throws Exception {
    final Logger log = Logger.getLogger("TestRelayPullThread.testShutdownRace");
    log.setLevel(Level.INFO);
    log.info("start");
    //elaborate test setup
    List<String> sources = Arrays.asList("source1");
    Properties clientProps = new Properties();
    clientProps.setProperty("client.container.httpPort", "0");
    clientProps.setProperty("client.runtime.bootstrap.enabled", "false");
    clientProps.setProperty("client.runtime.relay(1).name", "relay1");
    clientProps.setProperty("client.runtime.relay(1).port", "10001");
    clientProps.setProperty("client.runtime.relay(1).sources", "source1");
    clientProps.setProperty("client.connectionDefaults.eventBuffer.maxSize", "100000");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.maxRetryNum", "9");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.sleepIncFactor", "1.0");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.sleepIncDelta", "1");
    clientProps.setProperty("client.connectionDefaults.pullerRetries.initSleep", "1");
    DatabusHttpClientImpl client = new DatabusHttpClientImpl("client.", clientProps);
    Assert.assertNotNull(client, "client instantiation ok");
    final DatabusHttpClientImpl.StaticConfig clientConf = client.getClientStaticConfig();
    final DatabusSourcesConnection.StaticConfig srcConnConf = clientConf.getConnectionDefaults();
    DatabusHttpClientImpl.RuntimeConfig clientRtConf = clientConf.getRuntime().build();
    DbusEventBuffer.StaticConfig bufferConf = clientConf.getConnectionDefaults().getEventBuffer();
    DbusEventBuffer relayBuffer = new DbusEventBuffer(bufferConf);
    DbusEventBuffer bootstrapBuffer = new DbusEventBuffer(bufferConf);
    //we keep the index of the next server we expect to see
    AtomicInteger serverIdx = new AtomicInteger(-1);
    Set<ServerInfo> relays = clientRtConf.getRelaysSet();
    //generate the order in which we should see the servers
    List<ServerInfo> relayOrder = new ArrayList<ServerInfo>(relays);
    if (LOG.isInfoEnabled()) {
        StringBuilder sb = new StringBuilder();
        for (ServerInfo serverInfo : relayOrder) {
            sb.append(serverInfo.getName());
            sb.append(" ");
        }
        LOG.info("Relay order:" + sb.toString());
    }
    List<IdNamePair> sourcesResponse = new ArrayList<IdNamePair>();
    sourcesResponse.add(new IdNamePair(1L, "source1"));
    RegisterResponseEntry rre1 = new RegisterResponseEntry(1L, (short) 1, SCHEMA$.toString());
    final HashMap<Long, List<RegisterResponseEntry>> registerResponse = new HashMap<Long, List<RegisterResponseEntry>>();
    registerResponse.put(1L, Arrays.asList(rre1));
    //This guy succeeds on both /sources and /register
    final MockRelayConnection relayConn1 = new MockRelayConnection(sourcesResponse, registerResponse, null, serverIdx);
    //This guy will succeed on /sources but will force a shutdown so that
    //the success message is ignored
    final MockRelayConnection relayConn2 = new MockRelayConnectionForTestShutdownRace(sourcesResponse, null, null, serverIdx, log);
    DatabusRelayConnectionFactory mockConnFactory = EasyMock.createMock("mockRelayFactory", DatabusRelayConnectionFactory.class);
    // expected scenario:  create relayConn1 -> /sources success -> /register success ->
    // /stream error -> create relayConn2 -> call /sources -> shut down puller -> return
    // success for /sources
    EasyMock.expect(mockConnFactory.createRelayConnection(serverNameMatcher(serverIdx, relayOrder), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(relayConn1);
    EasyMock.expect(mockConnFactory.createRelayConnection(serverNameMatcher(serverIdx, relayOrder), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(relayConn2);
    EasyMock.replay(mockConnFactory);
    List<DatabusSubscription> sourcesSubList = DatabusSubscription.createSubscriptionList(sources);
    //Dummy connection object as expected by the puller thread
    // Note that in this case, it is ok to pass Set<relays> as all the relays serve the same source "source1"
    ConnectionStateFactory connStateFactory = new ConnectionStateFactory(sources);
    DatabusSourcesConnection sourcesConn = new DatabusSourcesConnection(srcConnConf, sourcesSubList, relays, null, null, null, relayBuffer, bootstrapBuffer, Executors.newCachedThreadPool(), null, null, null, null, null, null, null, mockConnFactory, null, null, null, null, new DbusEventV1Factory(), connStateFactory);
    final RelayPullThread relayPuller = new RelayPullThread("RelayPuller", sourcesConn, relayBuffer, connStateFactory, relays, new ArrayList<DbusKeyCompositeFilterConfig>(), !clientConf.getRuntime().getBootstrap().isEnabled(), clientConf.isReadLatestScnOnErrorEnabled(), clientConf.getPullerBufferUtilizationPct(), Integer.MAX_VALUE, ManagementFactory.getPlatformMBeanServer(), new DbusEventV1Factory(), null);
    //relayPuller.getLog().setLevel(Level.INFO);
    RemoteExceptionHandler mockRemoteExceptionHandler = new MockRemoteExceptionHandler(sourcesConn, relayBuffer, relayPuller);
    Field field = relayPuller.getClass().getDeclaredField("_remoteExceptionHandler");
    field.setAccessible(true);
    field.set(relayPuller, mockRemoteExceptionHandler);
    relayConn1.setCallback(relayPuller);
    relayConn2.setCallback(relayPuller);
    //Let the show begin
    final Thread relayPullerThread = new Thread(relayPuller, "testShutdownRace.RelayPuller");
    relayPullerThread.setDaemon(true);
    relayPullerThread.start();
    relayPuller.enqueueMessage(LifecycleMessage.createStartMessage());
    //wait for the puller to go the STREAM_REQUEST_SUCCESS state
    TestUtil.assertWithBackoff(new ConditionCheck() {

        @Override
        public boolean check() {
            return null != relayConn1.getLastStateMsg();
        }
    }, "wait for call from the puller to the relay connection", 500, log);
    //wait for puller thread to shutdown
    TestUtil.assertWithBackoff(new ConditionCheck() {

        @Override
        public boolean check() {
            log.debug(relayPuller.getMessageHistoryLog());
            return !relayPullerThread.isAlive();
        }
    }, "wait for puller to shutdown", 1000, log);
    EasyMock.verify(mockConnFactory);
    Assert.assertEquals(relayPuller.getLastOpenConnection(), null);
    log.info("done");
}