Package com.linkedin.helix.controller.stages

Examples of com.linkedin.helix.controller.stages.ClusterEvent

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  public void onStateChange(String instanceName,
                            List<CurrentState> statesInfo,
                            NotificationContext changeContext)
  {
    LOG.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);
    LOG.info("END: GenericClusterController.onStateChange()");
  }
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                        List<Message> messages,
                        NotificationContext changeContext)
  {
    LOG.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);
    LOG.info("END: Generic GenericClusterController.onLiveInstanceChange()");
  }
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  @Override
  public void onIdealStateChange(List<IdealState> idealStates,
                                 NotificationContext changeContext)
  {
    LOG.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)
  {
    LOG.info("START: GenericClusterController.onConfigChange()");
    ClusterEvent event = new ClusterEvent("configChange");
    event.addAttribute("changeContext", changeContext);
    event.addAttribute("helixmanager", changeContext.getManager());
    event.addAttribute("eventData", configs);
    handleEvent(event);
    LOG.info("END: GenericClusterController.onConfigChange()");
  }
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      if (_paused)
      {
        // it currently paused
        LOG.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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    @Override
    public void run()
    {
      NotificationContext changeContext = new NotificationContext(_manager);
      changeContext.setType(NotificationContext.Type.CALLBACK);
      ClusterEvent event = new ClusterEvent("periodicalRebalance");
      event.addAttribute("helixmanager", changeContext.getManager());
      event.addAttribute("changeContext", changeContext);
      List<ZNRecord> dummy = new ArrayList<ZNRecord>();
      event.addAttribute("eventData", dummy);
      // Should be able to process 
      handleEvent(event);
    }
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@Test
public class TestClusterEvent
{
  @Test
  public void testSimplePutandGet(){
    ClusterEvent event = new ClusterEvent("name");
    AssertJUnit.assertEquals(event.getName(), "name");
    event.addAttribute("attr1", "value");
    AssertJUnit.assertEquals(event.getAttribute("attr1"), "value");
  }
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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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Related Classes of com.linkedin.helix.controller.stages.ClusterEvent

  • com.linkedin.helix.controller.GenericHelixController
  • com.linkedin.helix.controller.GenericHelixController$RebalanceTask
  • com.linkedin.helix.controller.stages.TestClusterEvent
  • com.linkedin.helix.healthcheck.HealthStatsAggregationTask
  • com.linkedin.helix.tools.ClusterStateVerifier
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