Package org.apache.helix.controller.stages

Examples of org.apache.helix.controller.stages.ClusterEvent

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      NotificationContext changeContext) {
    logger.info("START: GenericClusterController.onStateChange()");
    if (changeContext == null || changeContext.getType() != Type.CALLBACK) {
      _cache.requireFullRefresh();
    }
    ClusterEvent event = new ClusterEvent("currentStateChange");
    event.addAttribute("helixmanager", changeContext.getManager());
    event.addAttribute("instanceName", instanceName);
    event.addAttribute("changeContext", changeContext);
    event.addAttribute("eventData", statesInfo);
    _eventQueue.put(event);
    logger.info("END: GenericClusterController.onStateChange()");
  }
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    // replica=2 means 1 master and 1 slave
    setupIdealState(clusterName, new int[] { 0, 1 }, new String[] { "TestDB" }, 1, 2);
    setupLiveInstances(clusterName, new int[] { 0, 1 });
    setupStateModel(clusterName);

    ClusterEvent event = new ClusterEvent("testEvent");
    event.addAttribute("helixmanager", manager);

    MessageThrottleStage throttleStage = new MessageThrottleStage();
    try
    {
      runStage(event, throttleStage);
      Assert.fail("Should throw exception since DATA_CACHE is null");
    }
    catch (Exception e)
    {
      // OK
    }

    Pipeline dataRefresh = new Pipeline();
    dataRefresh.addStage(new ReadClusterDataStage());
    runPipeline(event, dataRefresh);

    try
    {
      runStage(event, throttleStage);
      Assert.fail("Should throw exception since RESOURCE is null");
    }
    catch (Exception e)
    {
      // OK
    }
    runStage(event, new ResourceComputationStage());

    try
    {
      runStage(event, throttleStage);
      Assert.fail("Should throw exception since MESSAGE_SELECT is null");
    }
    catch (Exception e)
    {
      // OK
    }
    MessageSelectionStageOutput msgSelectOutput = new MessageSelectionStageOutput();
    List<Message> selectMessages = new ArrayList<Message>();
    Message msg =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-001",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_0");
    selectMessages.add(msg);

    msgSelectOutput.addMessages("TestDB", new Partition("TestDB_0"), selectMessages);
    event.addAttribute(AttributeName.MESSAGES_SELECTED.toString(), msgSelectOutput);

    runStage(event, throttleStage);

    MessageThrottleStageOutput msgThrottleOutput =
        event.getAttribute(AttributeName.MESSAGES_THROTTLE.toString());
    Assert.assertEquals(msgThrottleOutput.getMessages("TestDB", new Partition("TestDB_0"))
                                         .size(),
                        1);

    System.out.println("END " + clusterName + " at "
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    Assert.assertEquals(matches.size(), 2);
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint3));

    // test messageThrottleStage
    ClusterEvent event = new ClusterEvent("testEvent");
    event.addAttribute("helixmanager", manager);

    Pipeline dataRefresh = new Pipeline();
    dataRefresh.addStage(new ReadClusterDataStage());
    runPipeline(event, dataRefresh);
    runStage(event, new ResourceComputationStage());
    MessageSelectionStageOutput msgSelectOutput = new MessageSelectionStageOutput();

    Message msg3 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-003",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_0");

    Message msg4 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-004",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_0");

    Message msg5 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-005",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_0");

    Message msg6 =
        createMessage(MessageType.STATE_TRANSITION,
                      "msgId-006",
                      "OFFLINE",
                      "SLAVE",
                      "TestDB",
                      "localhost_1");

    List<Message> selectMessages = new ArrayList<Message>();
    selectMessages.add(msg1);
    selectMessages.add(msg2);
    selectMessages.add(msg3);
    selectMessages.add(msg4);
    selectMessages.add(msg5); // should be throttled
    selectMessages.add(msg6); // should be throttled

    msgSelectOutput.addMessages("TestDB", new Partition("TestDB_0"), selectMessages);
    event.addAttribute(AttributeName.MESSAGES_SELECTED.toString(), msgSelectOutput);

    runStage(event, throttleStage);

    MessageThrottleStageOutput msgThrottleOutput =
        event.getAttribute(AttributeName.MESSAGES_THROTTLE.toString());
    List<Message> throttleMessages =
        msgThrottleOutput.getMessages("TestDB", new Partition("TestDB_0"));
    Assert.assertEquals(throttleMessages.size(), 4);
    Assert.assertTrue(throttleMessages.contains(msg1));
    Assert.assertTrue(throttleMessages.contains(msg2));
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   * @throws Exception
   */

  static BestPossibleStateOutput calcBestPossState(ClusterDataCache cache) throws Exception
  {
    ClusterEvent event = new ClusterEvent("sampleEvent");
    event.addAttribute("ClusterDataCache", cache);

    ResourceComputationStage rcState = new ResourceComputationStage();
    CurrentStateComputationStage csStage = new CurrentStateComputationStage();
    BestPossibleStateCalcStage bpStage = new BestPossibleStateCalcStage();

    runStage(event, rcState);
    runStage(event, csStage);
    runStage(event, bpStage);

    BestPossibleStateOutput output =
        event.getAttribute(AttributeName.BEST_POSSIBLE_STATE.toString());

    // System.out.println("output:" + output);
    return output;
  }
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  public void onStateChange(String instanceName,
                            List<CurrentState> statesInfo,
                            NotificationContext changeContext)
  {
    logger.info("START: GenericClusterController.onStateChange()");
    ClusterEvent event = new ClusterEvent("currentStateChange");
    event.addAttribute("helixmanager", changeContext.getManager());
    event.addAttribute("instanceName", instanceName);
    event.addAttribute("changeContext", changeContext);
    event.addAttribute("eventData", statesInfo);
    handleEvent(event);
    logger.info("END: GenericClusterController.onStateChange()");
  }
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                        List<Message> messages,
                        NotificationContext changeContext)
  {
    logger.info("START: GenericClusterController.onMessage()");
   
    ClusterEvent event = new ClusterEvent("messageChange");
    event.addAttribute("helixmanager", changeContext.getManager());
    event.addAttribute("instanceName", instanceName);
    event.addAttribute("changeContext", changeContext);
    event.addAttribute("eventData", messages);
    handleEvent(event);
   
    if (_clusterStatusMonitor != null && messages != null)
    {
      _clusterStatusMonitor.addMessageQueueSize(instanceName, messages.size());
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        changeContext.getType() == NotificationContext.Type.CALLBACK)
    {
      checkLiveInstancesObservation(liveInstances, changeContext);
    }

    ClusterEvent event = new ClusterEvent("liveInstanceChange");
    event.addAttribute("helixmanager", changeContext.getManager());
    event.addAttribute("changeContext", changeContext);
    event.addAttribute("eventData", liveInstances);
    handleEvent(event);
    logger.info("END: Generic GenericClusterController.onLiveInstanceChange()");
  }
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  @Override
  public void onIdealStateChange(List<IdealState> idealStates,
                                 NotificationContext changeContext)
  {
    logger.info("START: Generic GenericClusterController.onIdealStateChange()");
    ClusterEvent event = new ClusterEvent("idealStateChange");
    event.addAttribute("helixmanager", changeContext.getManager());
    event.addAttribute("changeContext", changeContext);
    event.addAttribute("eventData", idealStates);
    handleEvent(event);
   
    if(changeContext.getType() != Type.FINALIZE)
    {
      checkRebalancingTimer(changeContext.getManager(), idealStates);
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  @Override
  public void onConfigChange(List<InstanceConfig> configs,
                             NotificationContext changeContext)
  {
    logger.info("START: GenericClusterController.onConfigChange()");
    ClusterEvent event = new ClusterEvent("configChange");
    event.addAttribute("changeContext", changeContext);
    event.addAttribute("helixmanager", changeContext.getManager());
    event.addAttribute("eventData", configs);
    handleEvent(event);
    logger.info("END: GenericClusterController.onConfigChange()");
  }
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      if (_paused)
      {
        // it currently paused
        logger.info("controller is now resumed");
        _paused = false;
        ClusterEvent event = new ClusterEvent("resume");
        event.addAttribute("changeContext", changeContext);
        event.addAttribute("helixmanager", changeContext.getManager());
        event.addAttribute("eventData", pauseSignal);
        handleEvent(event);
      }
      else
      {
        _paused = false;
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Related Classes of org.apache.helix.controller.stages.ClusterEvent

  • org.apache.helix.api.TestNewStages
  • org.apache.helix.controller.GenericHelixController
  • org.apache.helix.controller.GenericHelixController$ClusterEventProcessor
  • org.apache.helix.controller.GenericHelixController$RebalanceTask
  • org.apache.helix.controller.stages.BaseStageTest
  • org.apache.helix.controller.stages.TestMessageThrottleStage
  • org.apache.helix.controller.stages.TestRebalancePipeline
  • org.apache.helix.controller.stages.TestResourceComputationStage
  • org.apache.helix.controller.stages.TestStagesWithLogicalAccessors
  • org.apache.helix.healthcheck.HealthStatsAggregationTask
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