Package com.linkedin.helix.controller.pipeline

Examples of com.linkedin.helix.controller.pipeline.StageException

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    MessageThrottleStageOutput messageOutput =
        event.getAttribute(AttributeName.MESSAGES_THROTTLE.toString());

    if (manager == null || resourceMap == null || messageOutput == null)
    {
      throw new StageException("Missing attributes in event:" + event
          + ". Requires HelixManager|RESOURCES|MESSAGES_THROTTLE|DataCache");
    }

    HelixDataAccessor dataAccessor = manager.getHelixDataAccessor();
    List<Message> messagesToSend = new ArrayList<Message>();
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  public void process(ClusterEvent event) throws Exception
  {
    ClusterDataCache cache = event.getAttribute("ClusterDataCache");
    if (cache == null)
    {
      throw new StageException("Missing attributes in event:" + event + ". Requires DataCache");
    }

    Map<String, IdealState> idealStates = cache.getIdealStates();

    Map<String, Resource> resourceMap = new LinkedHashMap<String, Resource>();

    if (idealStates != null && idealStates.size() > 0)
    {
      for (IdealState idealState : idealStates.values())
      {
        Set<String> partitionSet = idealState.getPartitionSet();
        String resourceName = idealState.getResourceName();

        for (String partition : partitionSet)
        {
          addPartition(partition, resourceName, resourceMap);
          Resource resource = resourceMap.get(resourceName);
          resource.setStateModelDefRef(idealState.getStateModelDefRef());
          resource.setStateModelFactoryName(idealState.getStateModelFactoryName());
          resource.setBucketSize(idealState.getBucketSize());
          resource.setGroupMessageMode(idealState.getGroupMessageMode());
        }
      }
    }

    // It's important to get partitions from CurrentState as well since the
    // idealState might be removed.
    Map<String, LiveInstance> availableInstances = cache.getLiveInstances();

    if (availableInstances != null && availableInstances.size() > 0)
    {
      for (LiveInstance instance : availableInstances.values())
      {
        String instanceName = instance.getInstanceName();
        String clientSessionId = instance.getSessionId();

        Map<String, CurrentState> currentStateMap = cache.getCurrentState(instanceName,
            clientSessionId);
        if (currentStateMap == null || currentStateMap.size() == 0)
        {
          continue;
        }
        for (CurrentState currentState : currentStateMap.values())
        {

          String resourceName = currentState.getResourceName();
          Map<String, String> resourceStateMap = currentState.getPartitionStateMap();

          // don't overwrite ideal state settings
          if (!resourceMap.containsKey(resourceName))
          {
            addResource(resourceName, resourceMap);
            Resource resource = resourceMap.get(resourceName);
            resource.setStateModelDefRef(currentState.getStateModelDefRef());
            resource.setStateModelFactoryName(currentState.getStateModelFactoryName());
            resource.setBucketSize(currentState.getBucketSize());
            resource.setGroupMessageMode(currentState.getGroupMessageMode());
          }
         
          if (currentState.getStateModelDefRef() == null)
          {
            LOG.error("state model def is null." + "resource:" + currentState.getResourceName()
                + ", partitions: " + currentState.getPartitionStateMap().keySet() + ", states: "
                + currentState.getPartitionStateMap().values());
            throw new StageException("State model def is null for resource:"
                + currentState.getResourceName());
          }

          for (String partition : resourceStateMap.keySet())
          {
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        event.getAttribute(AttributeName.RESOURCES.toString());
    ClusterDataCache cache = event.getAttribute("ClusterDataCache");

    if (manager == null || resourceMap == null || cache == null)
    {
      throw new StageException("Missing attributes in event:" + event
          + ". Requires ClusterManager|RESOURCES|DataCache");
    }

    HelixDataAccessor dataAccessor = manager.getHelixDataAccessor();
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    HelixManager manager = event.getAttribute("helixmanager");
    HealthDataCache cache = event.getAttribute("HealthDataCache");

    if (manager == null || cache == null)
    {
      throw new StageException("helixmanager|HealthDataCache attribute value is null");
    }
    if(_alertsHolder == null)
    {
      _statsHolder = new StatsHolder(manager, cache);
      _alertsHolder = new AlertsHolder(manager, cache, _statsHolder);
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    Map<String, Resource> resourceMap =
        event.getAttribute(AttributeName.RESOURCES.toString());

    if (cache == null || resourceMap == null || msgSelectionOutput == null)
    {
      throw new StageException("Missing attributes in event: " + event
          + ". Requires ClusterDataCache|RESOURCES|MESSAGES_SELECTED");
    }

    MessageThrottleStageOutput output = new MessageThrottleStageOutput();
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  {
    HelixManager manager = event.getAttribute("helixmanager");
    ClusterDataCache cache = event.getAttribute("ClusterDataCache");
    if (manager == null || cache == null)
    {
      throw new StageException("Missing attributes in event:" + event
          + ". Requires HelixManager | DataCache");
    }

    String controllerVersion = manager.getVersion();
    if (controllerVersion == null)
    {
      String errorMsg = "Missing version of controller: " + manager.getInstanceName()
          + ". Pipeline will not continue.";
      LOG.error(errorMsg);
      throw new StageException(errorMsg);
    }

    Map<String, LiveInstance> liveInstanceMap = cache.getLiveInstances();
    for (LiveInstance liveInstance : liveInstanceMap.values())
    {
      String participantVersion = liveInstance.getHelixVersion();
      if (!isCompatible(controllerVersion, participantVersion))
      {
        String errorMsg = "cluster manager versions are incompatible; pipeline will not continue. "
                        + "controller:" + manager.getInstanceName() + ", controllerVersion:" + controllerVersion
                        + "; participant:" + liveInstance.getInstanceName() + ", participantVersion:" + participantVersion;
        LOG.error(errorMsg);
        throw new StageException(errorMsg);
      }
    }
  }
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    MessageGenerationOutput messageGenOutput =
        event.getAttribute(AttributeName.MESSAGES_ALL.toString());
    if (cache == null || resourceMap == null || currentStateOutput == null
        || messageGenOutput == null)
    {
      throw new StageException("Missing attributes in event:" + event
          + ". Requires DataCache|RESOURCES|CURRENT_STATE|MESSAGES_ALL");
    }

    MessageSelectionStageOutput output = new MessageSelectionStageOutput();
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    HelixManager manager = event.getAttribute("helixmanager");
    if (manager == null)
    {
      throw new StageException("HelixManager attribute value is null");
    }
    HelixDataAccessor dataAccessor = manager.getHelixDataAccessor();
    _cache.refresh(dataAccessor);
   
    ClusterStatusMonitor clusterStatusMonitor = (ClusterStatusMonitor) event.getAttribute("clusterStatusMonitor");
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    Map<String, Resource> resourceMap =
        event.getAttribute(AttributeName.RESOURCES.toString());

    if (cache == null || resourceMap == null)
    {
      throw new StageException("Missing attributes in event:" + event
          + ". Requires DataCache|RESOURCE");
    }

    Map<String, LiveInstance> liveInstances = cache.getLiveInstances();
    CurrentStateOutput currentStateOutput = new CurrentStateOutput();
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    long startTime = System.currentTimeMillis();

    HelixManager manager = event.getAttribute("helixmanager");
    if (manager == null)
    {
      throw new StageException("HelixManager attribute value is null");
    }
    // DataAccessor dataAccessor = manager.getDataAccessor();
    HelixDataAccessor accessor = manager.getHelixDataAccessor();
    _cache.refresh(accessor);
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Related Classes of com.linkedin.helix.controller.pipeline.StageException

  • com.linkedin.helix.controller.stages.BestPossibleStateCalcStage
  • com.linkedin.helix.controller.stages.CompatibilityCheckStage
  • com.linkedin.helix.controller.stages.CurrentStateComputationStage
  • com.linkedin.helix.controller.stages.ExternalViewComputeStage
  • com.linkedin.helix.controller.stages.MessageGenerationPhase
  • com.linkedin.helix.controller.stages.MessageSelectionStage
  • com.linkedin.helix.controller.stages.MessageThrottleStage
  • com.linkedin.helix.controller.stages.ReadClusterDataStage
  • com.linkedin.helix.controller.stages.ReadHealthDataStage
  • com.linkedin.helix.controller.stages.ResourceComputationStage
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