Package org.apache.helix.model

Examples of org.apache.helix.model.Resource

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  private void addPartition(String partition, String resourceName, Map<String, Resource> resourceMap) {
    if (resourceName == null || partition == null || resourceMap == null) {
      return;
    }
    if (!resourceMap.containsKey(resourceName)) {
      resourceMap.put(resourceName, new Resource(resourceName));
    }
    Resource resource = resourceMap.get(resourceName);
    resource.addPartition(partition);

  }
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    for (String resourceName : resourceMap.keySet()) {
      ExternalView view = new ExternalView(resourceName);
      // view.setBucketSize(currentStateOutput.getBucketSize(resourceName));
      // if resource ideal state has bucket size, set it
      // otherwise resource has been dropped, use bucket size from current state instead
      Resource resource = resourceMap.get(resourceName);
      if (resource.getBucketSize() > 0) {
        view.setBucketSize(resource.getBucketSize());
      } else {
        view.setBucketSize(currentStateOutput.getBucketSize(resourceName));
      }

      for (Partition partition : resource.getPartitions()) {
        Map<String, String> currentStateMap =
            currentStateOutput.getCurrentStateMap(resourceName, partition);
        if (currentStateMap != null && currentStateMap.size() > 0) {
          // Set<String> disabledInstances
          // = cache.getDisabledInstancesForResource(resource.toString());
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        }
        if (!instance.getSessionId().equals(message.getTgtSessionId())) {
          continue;
        }
        String resourceName = message.getResourceName();
        Resource resource = resourceMap.get(resourceName);
        if (resource == null) {
          continue;
        }

        if (!message.getBatchMessageMode()) {
          String partitionName = message.getPartitionName();
          Partition partition = resource.getPartition(partitionName);
          if (partition != null) {
            currentStateOutput.setPendingState(resourceName, partition, instanceName,
                message.getToState());
          } else {
            // log
          }
        } else {
          List<String> partitionNames = message.getPartitionNames();
          if (!partitionNames.isEmpty()) {
            for (String partitionName : partitionNames) {
              Partition partition = resource.getPartition(partitionName);
              if (partition != null) {
                currentStateOutput.setPendingState(resourceName, partition, instanceName,
                    message.getToState());
              } else {
                // log
              }
            }
          }
        }
      }
    }
    for (LiveInstance instance : liveInstances.values()) {
      String instanceName = instance.getInstanceName();

      String clientSessionId = instance.getSessionId();
      Map<String, CurrentState> currentStateMap =
          cache.getCurrentState(instanceName, clientSessionId);
      for (CurrentState currentState : currentStateMap.values()) {

        if (!instance.getSessionId().equals(currentState.getSessionId())) {
          continue;
        }
        String resourceName = currentState.getResourceName();
        String stateModelDefName = currentState.getStateModelDefRef();
        Resource resource = resourceMap.get(resourceName);
        if (resource == null) {
          continue;
        }
        if (stateModelDefName != null) {
          currentStateOutput.setResourceStateModelDef(resourceName, stateModelDefName);
        }

        currentStateOutput.setBucketSize(resourceName, currentState.getBucketSize());

        Map<String, String> partitionStateMap = currentState.getPartitionStateMap();
        for (String partitionName : partitionStateMap.keySet()) {
          Partition partition = resource.getPartition(partitionName);
          if (partition != null) {
            currentStateOutput.setCurrentState(resourceName,
                                               partition,
                                               instanceName,
                                               currentState.getState(partitionName));
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    {
      ExternalView view = new ExternalView(resourceName);
      // view.setBucketSize(currentStateOutput.getBucketSize(resourceName));
      // if resource ideal state has bucket size, set it
      // otherwise resource has been dropped, use bucket size from current state instead
      Resource resource = resourceMap.get(resourceName);
      if (resource.getBucketSize() > 0)
      {
        view.setBucketSize(resource.getBucketSize());
      }
      else
      {
        view.setBucketSize(currentStateOutput.getBucketSize(resourceName));
      }

      for (Partition partition : resource.getPartitions())
      {
        Map<String, String> currentStateMap =
            currentStateOutput.getCurrentStateMap(resourceName, partition);
        if (currentStateMap != null && currentStateMap.size() > 0)
        {
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        if (!instance.getSessionId().equals(message.getTgtSessionId()))
        {
          continue;
        }
        String resourceName = message.getResourceName();
        Resource resource = resourceMap.get(resourceName);
        if (resource == null)
        {
          continue;
        }

        if (!message.getBatchMessageMode())
        {
          String partitionName = message.getPartitionName();
          Partition partition = resource.getPartition(partitionName);
          if (partition != null)
          {
            currentStateOutput.setPendingState(resourceName,
                                               partition,
                                               instanceName,
                                               message.getToState());
          }
          else
          {
            // log
          }
        }
        else
        {
          List<String> partitionNames = message.getPartitionNames();
          if (!partitionNames.isEmpty())
          {
            for (String partitionName : partitionNames)
            {
              Partition partition = resource.getPartition(partitionName);
              if (partition != null)
              {
                currentStateOutput.setPendingState(resourceName,
                                                   partition,
                                                   instanceName,
                                                   message.getToState());
              }
              else
              {
                // log
              }
            }
          }
        }
      }
    }
    for (LiveInstance instance : liveInstances.values())
    {
      String instanceName = instance.getInstanceName();

      String clientSessionId = instance.getSessionId();
      Map<String, CurrentState> currentStateMap =
          cache.getCurrentState(instanceName, clientSessionId);
      for (CurrentState currentState : currentStateMap.values())
      {

        if (!instance.getSessionId().equals(currentState.getSessionId()))
        {
          continue;
        }
        String resourceName = currentState.getResourceName();
        String stateModelDefName = currentState.getStateModelDefRef();
        Resource resource = resourceMap.get(resourceName);
        if (resource == null)
        {
          continue;
        }
        if (stateModelDefName != null)
        {
          currentStateOutput.setResourceStateModelDef(resourceName, stateModelDefName);
        }

        currentStateOutput.setBucketSize(resourceName, currentState.getBucketSize());

        Map<String, String> partitionStateMap = currentState.getPartitionStateMap();
        for (String partitionName : partitionStateMap.keySet())
        {
          Partition partition = resource.getPartition(partitionName);
          if (partition != null)
          {
            currentStateOutput.setCurrentState(resourceName,
                                               partition,
                                               instanceName,
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    // go through all new messages, throttle if necessary
    // assume messages should be sorted by state transition priority in messageSelection stage
    for (String resourceName : resourceMap.keySet())
    {
      Resource resource = resourceMap.get(resourceName);
      for (Partition partition : resource.getPartitions())
      {
        List<Message> messages = msgSelectionOutput.getMessages(resourceName, partition);
        if (constraint != null && messages != null && messages.size() > 0)
        {
          messages = throttle(throttleCounterMap, constraint, messages, true);
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    HelixDataAccessor dataAccessor = manager.getHelixDataAccessor();
    List<Message> messagesToSend = new ArrayList<Message>();
    for (String resourceName : resourceMap.keySet())
    {
      Resource resource = resourceMap.get(resourceName);
      for (Partition partition : resource.getPartitions())
      {
        List<Message> messages = messageOutput.getMessages(resourceName, partition);
        messagesToSend.addAll(messages);
      }
    }
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    Iterator<Message> iter = messages.iterator();
    while (iter.hasNext())
    {
      Message message = iter.next();
      String resourceName = message.getResourceName();
      Resource resource = resourceMap.get(resourceName);
     
      String instanceName = message.getTgtName();
      LiveInstance liveInstance = liveInstanceMap.get(instanceName);
      String participantVersion = null;
      if (liveInstance != null) {
        participantVersion = liveInstance.getHelixVersion();
      }

      if (resource == null || !resource.getBatchMessageMode()
          || participantVersion == null
          || !properties.isFeatureSupported("batch_message", participantVersion))
      {
        outputMessages.add(message);
        continue;
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    }
    MessageGenerationOutput output = new MessageGenerationOutput();

    for (String resourceName : resourceMap.keySet())
    {
      Resource resource = resourceMap.get(resourceName);
      int bucketSize = resource.getBucketSize();

      StateModelDefinition stateModelDef = cache.getStateModelDef(resource.getStateModelDefRef());

      for (Partition partition : resource.getPartitions())
      {
        Map<String, String> instanceStateMap = bestPossibleStateOutput.getInstanceStateMap(
            resourceName, partition);

        // we should generate message based on the desired-state priority
        // so keep generated messages in a temp map keyed by state
        // desired-state->list of generated-messages
        Map<String, List<Message>> messageMap = new HashMap<String, List<Message>>();
       
        for (String instanceName : instanceStateMap.keySet())
        {
          String desiredState = instanceStateMap.get(instanceName);

          String currentState = currentStateOutput.getCurrentState(resourceName, partition,
              instanceName);
          if (currentState == null)
          {
            currentState = stateModelDef.getInitialState();
          }

          if (desiredState.equalsIgnoreCase(currentState))
          {
            continue;
          }

          String pendingState = currentStateOutput.getPendingState(resourceName, partition,
              instanceName);

          String nextState = stateModelDef.getNextStateForTransition(currentState, desiredState);
          if (nextState == null)
          {
            logger.error("Unable to find a next state for partition: "
                + partition.getPartitionName() + " from stateModelDefinition"
                + stateModelDef.getClass() + " from:" + currentState + " to:" + desiredState);
            continue;
          }

          if (pendingState != null)
          {
            if (nextState.equalsIgnoreCase(pendingState))
            {
              logger.debug("Message already exists for " + instanceName + " to transit "
                  + partition.getPartitionName() + " from " + currentState + " to " + nextState);
            } else if (currentState.equalsIgnoreCase(pendingState))
            {
              logger.info("Message hasn't been removed for " + instanceName + " to transit"
                  + partition.getPartitionName() + " to " + pendingState + ", desiredState: "
                  + desiredState);
            } else
            {
              logger.info("IdealState changed before state transition completes for "
                  + partition.getPartitionName() + " on " + instanceName + ", pendingState: "
                  + pendingState + ", currentState: " + currentState + ", nextState: " + nextState);
            }
          } else
          {
            Message message = createMessage(manager, resourceName, partition.getPartitionName(),
                instanceName, currentState, nextState, sessionIdMap.get(instanceName),
                stateModelDef.getId(), resource.getStateModelFactoryname(), bucketSize);
            IdealState idealState = cache.getIdealState(resourceName);
            if(idealState!= null && idealState.getStateModelDefRef().equalsIgnoreCase(DefaultSchedulerMessageHandlerFactory.SCHEDULER_TASK_QUEUE))
            {
              if(idealState.getRecord().getMapField(partition.getPartitionName())!=null)
              {
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    for (String resourceName : resourceMap.keySet())
    {
      logger.debug("Processing resource:" + resourceName);

      Resource resource = resourceMap.get(resourceName);
      // Ideal state may be gone. In that case we need to get the state model name
      // from the current state
      IdealState idealState = cache.getIdealState(resourceName);

      String stateModelDefName;

      if (idealState == null)
      {
        // if ideal state is deleted, use an empty one
        logger.info("resource:" + resourceName + " does not exist anymore");
        stateModelDefName = currentStateOutput.getResourceStateModelDef(resourceName);
        idealState = new IdealState(resourceName);
      }
      else
      {
        stateModelDefName = idealState.getStateModelDefRef();
      }

      StateModelDefinition stateModelDef = cache.getStateModelDef(stateModelDefName);
      if (idealState.getIdealStateMode() == IdealStateModeProperty.AUTO_REBALANCE)
      {
        calculateAutoBalancedIdealState(cache,
                                        idealState,
                                        stateModelDef,
                                        currentStateOutput);
      }

     
      for (Partition partition : resource.getPartitions())
      {
        Map<String, String> currentStateMap =
            currentStateOutput.getCurrentStateMap(resourceName, partition);

        Map<String, String> bestStateForPartition;
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Related Classes of org.apache.helix.model.Resource

  • org.apache.helix.controller.stages.BaseStageTest
  • org.apache.helix.controller.stages.BestPossibleStateCalcStage
  • org.apache.helix.controller.stages.CurrentStateComputationStage
  • org.apache.helix.controller.stages.ExternalViewComputeStage
  • org.apache.helix.controller.stages.MessageGenerationPhase
  • org.apache.helix.controller.stages.MessageSelectionStage
  • org.apache.helix.controller.stages.MessageThrottleStage
  • org.apache.helix.controller.stages.ResourceComputationStage
  • org.apache.helix.controller.stages.TaskAssignmentStage
  • org.apache.helix.monitoring.mbeans.TestClusterStatusMonitor
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