Examples with DatabusSubscription com.linkedin.databus.core.data_model.DatabusSubscription used on opensource projects

Example 26 with DatabusSubscription

use of com.linkedin.databus.core.data_model.DatabusSubscription in project databus by linkedin.

the class ServerInfo method toSimpleString.

/**
   * Converts the server info to a human-readable representation
   * @param   sb      a StringBuilder to which to append the string representation; if null, a new one will be created
   * @return  the StringBuilder
   */
public StringBuilder toSimpleString(StringBuilder sb) {
    if (null == sb) {
        sb = new StringBuilder(200);
    }
    sb.append("[server=").append(_serverCoordinates).append(", subs=[");
    boolean notFirst = false;
    for (DatabusSubscription sub : _subs) {
        if (notFirst) {
            sb.append(",");
        }
        sb.append(sub.toSimpleString());
        notFirst = true;
    }
    sb.append("]]");
    return sb;
}

Example 27 with DatabusSubscription

use of com.linkedin.databus.core.data_model.DatabusSubscription in project databus by linkedin.

the class TestGenericDispatcher method testTwoWindowEventCallbackFailure.

@Test(groups = { "small", "functional" })
public void testTwoWindowEventCallbackFailure() {
    final Logger log = Logger.getLogger("TestGenericDispatcher.testTwoWindowEventCallbackFailure");
    log.info("start");
    int source1EventsNum = 2;
    int source2EventsNum = 2;
    Hashtable<Long, AtomicInteger> keyCounts = new Hashtable<Long, AtomicInteger>();
    Hashtable<Short, AtomicInteger> srcidCounts = new Hashtable<Short, AtomicInteger>();
    final TestGenericDispatcherEventBuffer eventsBuf = new TestGenericDispatcherEventBuffer(_generic100KBufferStaticConfig);
    eventsBuf.start(0);
    eventsBuf.startEvents();
    initBufferWithEvents(eventsBuf, 1, source1EventsNum, (short) 1, keyCounts, srcidCounts);
    eventsBuf.endEvents(100L);
    eventsBuf.startEvents();
    initBufferWithEvents(eventsBuf, 1 + source1EventsNum, source2EventsNum, (short) 2, keyCounts, srcidCounts);
    eventsBuf.endEvents(200L);
    DatabusStreamConsumer mockConsumer = new EventCountingConsumer(new StateVerifyingStreamConsumer(new DataEventFailingStreamConsumer((short) 2)), keyCounts, srcidCounts);
    SelectingDatabusCombinedConsumer sdccMockConsumer = new SelectingDatabusCombinedConsumer(mockConsumer);
    List<String> sources = new ArrayList<String>();
    Map<Long, IdNamePair> sourcesMap = new HashMap<Long, IdNamePair>();
    for (int i = 1; i <= 3; ++i) {
        IdNamePair sourcePair = new IdNamePair((long) i, "source" + i);
        sources.add(sourcePair.getName());
        sourcesMap.put(sourcePair.getId(), sourcePair);
    }
    DatabusV2ConsumerRegistration consumerReg = new DatabusV2ConsumerRegistration(sdccMockConsumer, sources, null);
    List<DatabusV2ConsumerRegistration> allRegistrations = Arrays.asList(consumerReg);
    MultiConsumerCallback callback = new MultiConsumerCallback(allRegistrations, Executors.newSingleThreadExecutor(), 1000, new StreamConsumerCallbackFactory(null, null), null, null, null, null);
    callback.setSourceMap(sourcesMap);
    List<DatabusSubscription> subs = DatabusSubscription.createSubscriptionList(sources);
    RelayDispatcher dispatcher = new RelayDispatcher("dispatcher", _genericRelayConnStaticConfig, subs, new InMemoryPersistenceProvider(), eventsBuf, callback, null, null, null, null, null);
    Thread dispatcherThread = new Thread(dispatcher);
    //dispatcherThread.setDaemon(true);
    dispatcherThread.start();
    HashMap<Long, List<RegisterResponseEntry>> schemaMap = new HashMap<Long, List<RegisterResponseEntry>>();
    List<RegisterResponseEntry> l1 = new ArrayList<RegisterResponseEntry>();
    List<RegisterResponseEntry> l2 = new ArrayList<RegisterResponseEntry>();
    List<RegisterResponseEntry> l3 = new ArrayList<RegisterResponseEntry>();
    l1.add(new RegisterResponseEntry(1L, (short) 1, SOURCE1_SCHEMA_STR));
    l2.add(new RegisterResponseEntry(2L, (short) 1, SOURCE2_SCHEMA_STR));
    l3.add(new RegisterResponseEntry(3L, (short) 1, SOURCE3_SCHEMA_STR));
    schemaMap.put(1L, l1);
    schemaMap.put(2L, l2);
    schemaMap.put(3L, l3);
    dispatcher.enqueueMessage(SourcesMessage.createSetSourcesIdsMessage(sourcesMap.values()));
    dispatcher.enqueueMessage(SourcesMessage.createSetSourcesSchemasMessage(schemaMap));
    try {
        Thread.sleep(2000);
    } catch (InterruptedException ie) {
    }
    dispatcher.shutdown();
    for (long i = 1; i <= source1EventsNum; ++i) {
        assertEquals("correct amount of callbacks for key " + i, 1, keyCounts.get(i).intValue());
    }
    for (long i = source2EventsNum + 1; i <= source1EventsNum + source2EventsNum; ++i) {
        assert keyCounts.get(1L + source1EventsNum).intValue() > 1 : "correct amount of callbacks for key " + i + ":" + keyCounts.get(i).intValue();
    }
    verifyNoLocks(null, eventsBuf);
    log.info("end\n");
}

Example 28 with DatabusSubscription

use of com.linkedin.databus.core.data_model.DatabusSubscription in project databus by linkedin.

the class MockRemoteExceptionHandler method testRelayFailOver.

@Test(groups = { "small", "functional" })
public void testRelayFailOver() throws Exception {
    final Logger log = Logger.getLogger("TestRelayPullThread.testRelayFailOver");
    log.setLevel(Level.INFO);
    log.info("-------------- start -------------------");
    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.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 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());
    }
    //This guy always fails on /sources
    final MockRelayConnection mockFailConn = new MockRelayConnection(null, null, null, serverIdx);
    List<IdNamePair> sourcesResponse = new ArrayList<IdNamePair>();
    sourcesResponse.add(new IdNamePair(1L, "source1"));
    //This guy succeeds on /sources but fails on /register
    final MockRelayConnection mockSuccessConn = new MockRelayConnection(sourcesResponse, null, null, serverIdx);
    DatabusRelayConnectionFactory mockConnFactory = EasyMock.createMock("mockRelayFactory", DatabusRelayConnectionFactory.class);
    //each server should be tried MAX_RETRIES time until all retries are exhausted
    for (int i = 0; i < clientConf.getConnectionDefaults().getPullerRetries().getMaxRetryNum() / 3; ++i) {
        EasyMock.expect(mockConnFactory.createRelayConnection(serverNameMatcher(serverIdx, relayOrder), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(mockFailConn);
        EasyMock.expect(mockConnFactory.createRelayConnection(serverNameMatcher(serverIdx, relayOrder), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(mockFailConn);
        EasyMock.expect(mockConnFactory.createRelayConnection(serverNameMatcher(serverIdx, relayOrder), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(mockSuccessConn);
    }
    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);
    RemoteExceptionHandler mockRemoteExceptionHandler = new MockRemoteExceptionHandler(sourcesConn, relayBuffer, relayPuller);
    Field field = relayPuller.getClass().getDeclaredField("_remoteExceptionHandler");
    field.setAccessible(true);
    field.set(relayPuller, mockRemoteExceptionHandler);
    mockFailConn.setCallback(relayPuller);
    mockSuccessConn.setCallback(relayPuller);
    //Let the show begin
    Thread relayPullerThread = new Thread(relayPuller);
    relayPullerThread.setDaemon(true);
    relayPullerThread.start();
    relayPuller.enqueueMessage(LifecycleMessage.createStartMessage());
    TestUtil.assertWithBackoff(new ConditionCheck() {

        @Override
        public boolean check() {
            return mockFailConn.getSourcesCallCounter() == 6;
        }
    }, "failConn: correct number of /sources", 500, log);
    Assert.assertEquals(mockFailConn.getRegisterCallCounter(), 0, "failConn: correct number of /register");
    Assert.assertEquals(mockFailConn.getStreamCallCounter(), 0, "failConn: correct number of /stream");
    TestUtil.assertWithBackoff(new ConditionCheck() {

        @Override
        public boolean check() {
            return mockSuccessConn.getSourcesCallCounter() == 3;
        }
    }, "successConn: correct number of /sources", 500, log);
    Assert.assertEquals(mockSuccessConn.getRegisterCallCounter(), 3, "successConn: correct number of /register");
    Assert.assertEquals(mockSuccessConn.getStreamCallCounter(), 0, "successConn: correct number of /stream");
    TestUtil.assertWithBackoff(new ConditionCheck() {

        @Override
        public boolean check() {
            return relayPuller.getComponentStatus().getStatus() == DatabusComponentStatus.Status.SUSPENDED_ON_ERROR;
        }
    }, "puller suspended because of out of retries", 500, log);
    EasyMock.verify(mockConnFactory);
    relayPuller.enqueueMessage(LifecycleMessage.createShutdownMessage());
    relayPuller.awaitShutdown();
    log.info("------------ done --------------");
}

Example 29 with DatabusSubscription

use of com.linkedin.databus.core.data_model.DatabusSubscription in project databus by linkedin.

the class MockRemoteExceptionHandler method createRelayPullThread.

private static RelayPullThread createRelayPullThread(boolean failRelayConnection, boolean muteTransition, boolean bootstrapEnabled, boolean readLatestScnEnabled, boolean readDataThrowException, boolean readDataException, String exceptionName, int numRetriesOnFellOff, DbusKeyCompositeFilterConfig filterConfig) throws Exception {
    List<String> sources = Arrays.asList("source1");
    Properties clientProps = new Properties();
    if (bootstrapEnabled) {
        clientProps.setProperty("client.runtime.bootstrap.enabled", "true");
        clientProps.setProperty("client.runtime.bootstrap.service(1).name", "bs1");
        clientProps.setProperty("client.runtime.bootstrap.service(1).port", "10001");
        clientProps.setProperty("client.runtime.bootstrap.service(1).sources", "source1");
    } else {
        clientProps.setProperty("client.runtime.bootstrap.enabled", "false");
    }
    clientProps.setProperty("client.container.jmx.rmiEnabled", "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.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");
    if (readLatestScnEnabled)
        clientProps.setProperty("client.enableReadLatestOnRelayFallOff", "true");
    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");
    clientProps.setProperty("client.connectionDefaults.numRetriesOnFallOff", "" + numRetriesOnFellOff);
    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);
    if (bootstrapEnabled)
        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>> registerSourcesResponse = new HashMap<Long, List<RegisterResponseEntry>>();
    List<RegisterResponseEntry> regResponse = new ArrayList<RegisterResponseEntry>();
    regResponse.add(new RegisterResponseEntry(1L, (short) 1, SCHEMA$.toString()));
    registerSourcesResponse.put(1L, regResponse);
    ChunkedBodyReadableByteChannel channel = EasyMock.createMock(ChunkedBodyReadableByteChannel.class);
    if (!readDataException) {
        EasyMock.expect(channel.getMetadata(EasyMock.<String>notNull())).andReturn(null).anyTimes();
    } else {
        EasyMock.expect(channel.getMetadata(EasyMock.<String>notNull())).andReturn(exceptionName).anyTimes();
    }
    EasyMock.replay(channel);
    DbusEventBuffer dbusBuffer = EasyMock.createMock(DbusEventBuffer.class);
    EasyMock.expect(dbusBuffer.readEvents(EasyMock.<ReadableByteChannel>notNull(), EasyMock.<List<InternalDatabusEventsListener>>notNull(), EasyMock.<DbusEventsStatisticsCollector>isNull())).andReturn(1).anyTimes();
    EasyMock.expect(dbusBuffer.getSeenEndOfPeriodScn()).andReturn(1L).anyTimes();
    EasyMock.expect(dbusBuffer.getEventSerializationVersion()).andReturn(DbusEventFactory.DBUS_EVENT_V1).anyTimes();
    if (readDataThrowException) {
        EasyMock.expect(dbusBuffer.readEvents(EasyMock.<ReadableByteChannel>notNull())).andThrow(new RuntimeException("dummy")).anyTimes();
    } else {
        EasyMock.expect(dbusBuffer.readEvents(EasyMock.<ReadableByteChannel>notNull())).andReturn(1).anyTimes();
    }
    EasyMock.expect(dbusBuffer.acquireIterator(EasyMock.<String>notNull())).andReturn(null).anyTimes();
    dbusBuffer.waitForFreeSpace((int) (clientConf.getConnectionDefaults().getFreeBufferThreshold() * 100.0 / clientConf.getPullerBufferUtilizationPct()));
    EasyMock.expectLastCall().anyTimes();
    EasyMock.expect(dbusBuffer.getBufferFreeReadSpace()).andReturn(0).anyTimes();
    EasyMock.replay(dbusBuffer);
    //This guy succeeds on /sources but fails on /register  [FIXME:  it does? why?]
    Map<Long, List<RegisterResponseEntry>> registerKeysResponse = null;
    List<RegisterResponseMetadataEntry> registerMetadataResponse = null;
    MockRelayConnection mockSuccessConn = new MockRelayConnection(sourcesResponse, registerSourcesResponse, registerKeysResponse, registerMetadataResponse, channel, serverIdx, muteTransition);
    DatabusRelayConnectionFactory mockConnFactory = EasyMock.createMock("mockRelayFactory", DatabusRelayConnectionFactory.class);
    if (failRelayConnection) {
        EasyMock.expect(mockConnFactory.createRelayConnection(EasyMock.<ServerInfo>notNull(), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andThrow(new RuntimeException("Mock Error")).anyTimes();
    } else {
        EasyMock.expect(mockConnFactory.createRelayConnection(EasyMock.<ServerInfo>notNull(), EasyMock.<ActorMessageQueue>notNull(), EasyMock.<RemoteExceptionHandler>notNull())).andReturn(mockSuccessConn).anyTimes();
    }
    List<DatabusSubscription> sourcesSubList = DatabusSubscription.createSubscriptionList(sources);
    // Mock Bootstrap Puller
    BootstrapPullThread mockBsPuller = EasyMock.createMock("bpt", BootstrapPullThread.class);
    mockBsPuller.enqueueMessage(EasyMock.notNull());
    EasyMock.expectLastCall().anyTimes();
    // Mock Relay Dispatcher
    RelayDispatcher mockDispatcher = EasyMock.createMock("rd", RelayDispatcher.class);
    mockDispatcher.enqueueMessage(EasyMock.notNull());
    EasyMock.expectLastCall().anyTimes();
    DatabusSourcesConnection sourcesConn2 = EasyMock.createMock(DatabusSourcesConnection.class);
    DatabusSourcesConnection.SourcesConnectionStatus scs = sourcesConn2.new SourcesConnectionStatus();
    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(scs).anyTimes();
    EasyMock.expect(sourcesConn2.getLocalRelayCallsStatsCollector()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getInboundEventsStatsCollector()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getRelayCallsStatsCollector()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getUnifiedClientStats()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getRelayConnFactory()).andReturn(mockConnFactory).anyTimes();
    EasyMock.expect(sourcesConn2.loadPersistentCheckpoint()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getDataEventsBuffer()).andReturn(dbusBuffer).anyTimes();
    if (bootstrapEnabled)
        EasyMock.expect(sourcesConn2.isBootstrapEnabled()).andReturn(true).anyTimes();
    else
        EasyMock.expect(sourcesConn2.isBootstrapEnabled()).andReturn(false).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapRegistrations()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapServices()).andReturn(null).anyTimes();
    EasyMock.expect(sourcesConn2.getBootstrapPuller()).andReturn(mockBsPuller).anyTimes();
    EasyMock.expect(sourcesConn2.getRelayDispatcher()).andReturn(mockDispatcher).anyTimes();
    EasyMock.makeThreadSafe(mockConnFactory, true);
    EasyMock.makeThreadSafe(mockDispatcher, true);
    EasyMock.makeThreadSafe(mockBsPuller, true);
    EasyMock.makeThreadSafe(sourcesConn2, true);
    EasyMock.replay(mockConnFactory);
    EasyMock.replay(sourcesConn2);
    EasyMock.replay(mockDispatcher);
    EasyMock.replay(mockBsPuller);
    ConnectionStateFactory connStateFactory = new ConnectionStateFactory(sources);
    ArrayList<DbusKeyCompositeFilterConfig> filters = new ArrayList<DbusKeyCompositeFilterConfig>();
    if (filterConfig != null)
        filters.add(filterConfig);
    RelayPullThread relayPuller = new RelayPullThread("RelayPuller", sourcesConn2, dbusBuffer, connStateFactory, clientRtConf.getRelaysSet(), filters, srcConnConf.getConsumeCurrent(), srcConnConf.getReadLatestScnOnError(), srcConnConf.getPullerUtilizationPct(), // no threshold for noEventsRest set
    0, ManagementFactory.getPlatformMBeanServer(), new DbusEventV1Factory(), null);
    RemoteExceptionHandler mockRemoteExceptionHandler = new MockRemoteExceptionHandler(sourcesConn2, dbusBuffer, relayPuller);
    Field field = relayPuller.getClass().getDeclaredField("_remoteExceptionHandler");
    field.setAccessible(true);
    field.set(relayPuller, mockRemoteExceptionHandler);
    mockSuccessConn.setCallback(relayPuller);
    return relayPuller;
}

Example 30 with DatabusSubscription

use of com.linkedin.databus.core.data_model.DatabusSubscription 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 --------------");
}