Package org.apache.helix.model

Examples of org.apache.helix.model.Message

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    {
      System.out
          .println("BootstrapProcess.BootstrapStateModel.offlineToSlave()");
      HelixManager manager = context.getManager();
      ClusterMessagingService messagingService = manager.getMessagingService();
      Message requestBackupUriRequest = new Message(
          MessageType.USER_DEFINE_MSG, UUID.randomUUID().toString());
      requestBackupUriRequest
          .setMsgSubType(BootstrapProcess.REQUEST_BOOTSTRAP_URL);
      requestBackupUriRequest.setMsgState(MessageState.NEW);
      Criteria recipientCriteria = new Criteria();
      recipientCriteria.setInstanceName("*");
      recipientCriteria.setRecipientInstanceType(InstanceType.PARTICIPANT);
      recipientCriteria.setResource(message.getResourceName());
      recipientCriteria.setPartition(message.getPartitionName());
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  {
    if (_manager.isConnected())
    {
      try
      {
        Message nopMsg = new Message(MessageType.NO_OP, UUID.randomUUID().toString());
        nopMsg.setSrcName(_manager.getInstanceName());

        HelixDataAccessor accessor = _manager.getHelixDataAccessor();
        Builder keyBuilder = accessor.keyBuilder();

        if (_manager.getInstanceType() == InstanceType.CONTROLLER
            || _manager.getInstanceType() == InstanceType.CONTROLLER_PARTICIPANT)
        {
          nopMsg.setTgtName("Controller");
          accessor.setProperty(keyBuilder.controllerMessage(nopMsg.getId()), nopMsg);
        }

        if (_manager.getInstanceType() == InstanceType.PARTICIPANT
            || _manager.getInstanceType() == InstanceType.CONTROLLER_PARTICIPANT)
        {
          nopMsg.setTgtName(_manager.getInstanceName());
          accessor.setProperty(keyBuilder.message(nopMsg.getTgtName(), nopMsg.getId()),
                               nopMsg);
        }
        logger.info("Send NO_OP message to " + nopMsg.getTgtName() + ", msgId: "
            + nopMsg.getId());
      }
      catch (Exception e)
      {
        logger.error(e);
      }
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          }
        }
        for (Map<String, String> map : matchedList)
        {
          String id = UUID.randomUUID().toString();
          Message newMessage = new Message(message.getRecord(), id);
          String srcInstanceName = _manager.getInstanceName();
          String tgtInstanceName = map.get("instanceName");
          // Don't send message to self
          if (recipientCriteria.isSelfExcluded()
              && srcInstanceName.equalsIgnoreCase(tgtInstanceName))
          {
            continue;
          }
          newMessage.setSrcName(srcInstanceName);
          newMessage.setTgtName(tgtInstanceName);
          newMessage.setResourceName(map.get("resourceName"));
          newMessage.setPartitionName(map.get("partitionName"));
          if (recipientCriteria.isSessionSpecific())
          {
            newMessage.setTgtSessionId(sessionIdMap.get(tgtInstanceName));
          }
          messages.add(newMessage);
        }
        messagesToSendMap.put(InstanceType.PARTICIPANT, messages);
      }
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  private List<Message> generateMessagesForController(Message message)
  {
    List<Message> messages = new ArrayList<Message>();
    String id = UUID.randomUUID().toString();
    Message newMessage = new Message(message.getRecord(), id);
    newMessage.setMsgId(id);
    newMessage.setSrcName(_manager.getInstanceName());
    newMessage.setTgtName("Controller");
    messages.add(newMessage);
    return messages;
  }
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  {
    if (_manager.isConnected())
    {
      try
      {
        Message nopMsg = new Message(MessageType.NO_OP, UUID.randomUUID().toString());
        nopMsg.setSrcName(_manager.getInstanceName());

        HelixDataAccessor accessor = _manager.getHelixDataAccessor();
        Builder keyBuilder = accessor.keyBuilder();

        if (_manager.getInstanceType() == InstanceType.CONTROLLER
            || _manager.getInstanceType() == InstanceType.CONTROLLER_PARTICIPANT)
        {
          nopMsg.setTgtName("Controller");
          accessor.setProperty(keyBuilder.controllerMessage(nopMsg.getId()), nopMsg);
        }

        if (_manager.getInstanceType() == InstanceType.PARTICIPANT
            || _manager.getInstanceType() == InstanceType.CONTROLLER_PARTICIPANT)
        {
          nopMsg.setTgtName(_manager.getInstanceName());
          accessor.setProperty(keyBuilder.message(nopMsg.getTgtName(), nopMsg.getId()),
                               nopMsg);
        }
      }
      catch (Exception e)
      {
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      taskResult.getTaskResultMap().put("INTERRUPTED", "" + taskResult.isInterrupted());
      if (!taskResult.isSucess())
      {
        taskResult.getTaskResultMap().put("ERRORINFO", taskResult.getMessage());
      }
      Message replyMessage =
          Message.createReplyMessage(_message,
                                     _manager.getInstanceName(),
                                     taskResult.getTaskResultMap());
      replyMessage.setSrcInstanceType(_manager.getInstanceType());

      if (message.getSrcInstanceType() == InstanceType.PARTICIPANT)
      {
        Builder keyBuilder = accessor.keyBuilder();
        accessor.setProperty(keyBuilder.message(message.getMsgSrc(),
                                                replyMessage.getMsgId()),
                             replyMessage);
      }
      else if (message.getSrcInstanceType() == InstanceType.CONTROLLER)
      {
        Builder keyBuilder = accessor.keyBuilder();
        accessor.setProperty(keyBuilder.controllerMessage(replyMessage.getMsgId()),
                             replyMessage);
      }
      _statusUpdateUtil.logInfo(message, HelixTask.class, "1 msg replied to "
          + replyMessage.getTgtName(), accessor);
    }
  }
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    List<Message> outputMessages = new ArrayList<Message>();

    Iterator<Message> iter = messages.iterator();
    while (iter.hasNext())
    {
      Message message = iter.next();
      String resourceName = message.getResourceName();
      Resource resource = resourceMap.get(resourceName);
      if (resource == null || !resource.getGroupMessageMode())
      {
        outputMessages.add(message);
        continue;
      }

      String key =
          keyBuilder.currentState(message.getTgtName(),
                                  message.getTgtSessionId(),
                                  message.getResourceName()).getPath()
              + "/" + message.getFromState() + "/" + message.getToState();

      if (!groupMessages.containsKey(key))
      {
        Message groupMessage = new Message(message.getRecord());
        groupMessage.setGroupMessageMode(true);
        outputMessages.add(groupMessage);
        groupMessages.put(key, groupMessage);
      }
      groupMessages.get(key).addPartitionName(message.getPartitionName());
    }
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      _groupMsgHandler.put(message);

      List<String> partitionNames = message.getPartitionNames();
      for (String partitionName : partitionNames)
      {
        Message subMsg = new Message(message.getRecord());
        subMsg.setPartitionName(partitionName);
        subMsg.setAttribute(Attributes.PARENT_MSG_ID, message.getId());

        LOG.info("Creating handler for group message " + subMsg.getMsgId() + "/"
            + partitionName);
        MessageHandler handler = createMessageHandler(subMsg, changeContext);
        if (handler != null)
        {
          handlers.add(handler);
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                  + 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);
            // Set timeout of needed
            String stateTransition = currentState + "-" + nextState + "_"
                + Message.Attributes.TIMEOUT;
            if (idealState != null
                && idealState.getRecord().getSimpleField(stateTransition) != null)
            {
              try
              {
                int timeout = Integer.parseInt(idealState.getRecord().getSimpleField(
                    stateTransition));
                if (timeout > 0)
                {
                  message.setExecutionTimeout(timeout);
                }
              } catch (Exception e)
              {
                logger.error("", e);
              }
            }
            message.getRecord().setSimpleField("ClusterEventName", event.getName());
            output.addMessage(resourceName, partition, message);
          }
        }
      }
    }
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  private Message createMessage(HelixManager manager, String resourceName, String partitionName,
      String instanceName, String currentState, String nextState, String sessionId,
      String stateModelDefName, String stateModelFactoryName, int bucketSize)
  {
    String uuid = UUID.randomUUID().toString();
    Message message = new Message(MessageType.STATE_TRANSITION, uuid);
    message.setSrcName(manager.getInstanceName());
    message.setTgtName(instanceName);
    message.setMsgState(MessageState.NEW);
    message.setPartitionName(partitionName);
    message.setResourceName(resourceName);
    message.setFromState(currentState);
    message.setToState(nextState);
    message.setTgtSessionId(sessionId);
    message.setSrcSessionId(manager.getSessionId());
    message.setStateModelDef(stateModelDefName);
    message.setStateModelFactoryName(stateModelFactoryName);
    message.setBucketSize(bucketSize);

    return message;
  }
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Related Classes of org.apache.helix.model.Message

  • org.apache.helix.api.accessor.ClusterAccessor
  • org.apache.helix.api.accessor.ParticipantAccessor
  • org.apache.helix.api.config.SchedulerTaskConfig
  • org.apache.helix.api.Resource
  • org.apache.helix.controller.stages.ContainerProvisioningStage
  • org.apache.helix.controller.stages.ExternalViewComputeStage
  • org.apache.helix.controller.stages.MessageGenerationPhase
  • org.apache.helix.controller.stages.MessageGenerationStage
  • org.apache.helix.controller.stages.TaskAssignmentStage
  • org.apache.helix.controller.stages.TestCurrentStateComputationStage
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