Package org.apache.helix

Examples of org.apache.helix.HelixManager

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  public void process(ClusterEvent event) throws Exception
  {
    long startTime = System.currentTimeMillis();
    log.info("START ExternalViewComputeStage.process()");

    HelixManager manager = event.getAttribute("helixmanager");
    Map<String, Resource> resourceMap =
        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();

    CurrentStateOutput currentStateOutput =
        event.getAttribute(AttributeName.CURRENT_STATE.toString());

    List<ExternalView> newExtViews = new ArrayList<ExternalView>();
    List<PropertyKey> keys = new ArrayList<PropertyKey>();

    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());
          for (String instance : currentStateMap.keySet())
          {
            // if (!disabledInstances.contains(instance))
            // {
            view.setState(partition.getPartitionName(),
                          instance,
                          currentStateMap.get(instance));
            // }
          }
        }
      }
      // Update cluster status monitor mbean
      ClusterStatusMonitor clusterStatusMonitor =
          (ClusterStatusMonitor) event.getAttribute("clusterStatusMonitor");
      if (clusterStatusMonitor != null)
      {
        clusterStatusMonitor.onExternalViewChange(view,
                                                  cache._idealStateMap.get(view.getResourceName()));
      }

      // compare the new external view with current one, set only on different
      Map<String, ExternalView> curExtViews =
          dataAccessor.getChildValuesMap(manager.getHelixDataAccessor()
                                                .keyBuilder()
                                                .externalViews());

      ExternalView curExtView = curExtViews.get(resourceName);
      if (curExtView == null || !curExtView.getRecord().equals(view.getRecord()))
      {
        keys.add(manager.getHelixDataAccessor().keyBuilder().externalView(resourceName));
        newExtViews.add(view);
        // dataAccessor.setProperty(PropertyType.EXTERNALVIEW, view,
        // resourceName);
      }
    }
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    @Transition(from = "OFFLINE", to = "SLAVE")
    public void offlineToSlave(Message message, NotificationContext context)
    {
      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);
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  }

  @Override
  public void process(ClusterEvent event) throws Exception
  {
    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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    final String clusterName = SetupCluster.DEFAULT_CLUSTER_NAME;
    final String zkAddr = args[0];
   
    try
    {
      final HelixManager manager = HelixControllerMain.startHelixController(zkAddr, clusterName, null,
                                                        HelixControllerMain.STANDALONE);
     
      Runtime.getRuntime().addShutdownHook(new Thread()
      {
        @Override
        public void run()
        {
          System.out.println("Shutting down cluster manager: " + manager.getInstanceName());
          manager.disconnect();
        }
      });
     
      Thread.currentThread().join();
    }
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  public void process(ClusterEvent event) throws Exception
  {
    long startTime = System.currentTimeMillis();
    logger.info("START TaskAssignmentStage.process()");

    HelixManager manager = event.getAttribute("helixmanager");
    Map<String, Resource> resourceMap =
        event.getAttribute(AttributeName.RESOURCES.toString());
    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>();
    for (String resourceName : resourceMap.keySet())
    {
      Resource resource = resourceMap.get(resourceName);
      for (Partition partition : resource.getPartitions())
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        _taskMap.clear();
      }
      return;
    }

    HelixManager manager = changeContext.getManager();
    HelixDataAccessor accessor = manager.getHelixDataAccessor();
    Builder keyBuilder = accessor.keyBuilder();

    if (messages == null || messages.size() == 0)
    {
      LOG.info("No Messages to process");
      return;
    }

    // sort message by creation timestamp, so message created earlier is processed first
    Collections.sort(messages, Message.CREATE_TIME_COMPARATOR);

    // message handlers created
    List<MessageHandler> handlers = new ArrayList<MessageHandler>();

    // message read
    List<Message> readMsgs = new ArrayList<Message>();

    String sessionId = manager.getSessionId();
    List<String> curResourceNames =
        accessor.getChildNames(keyBuilder.currentStates(instanceName, sessionId));
    List<PropertyKey> createCurStateKeys = new ArrayList<PropertyKey>();
    List<CurrentState> metaCurStates = new ArrayList<CurrentState>();
    Set<String> createCurStateNames = new HashSet<String>();
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  private static Logger logger = Logger.getLogger(MessageGenerationPhase.class);

  @Override
  public void process(ClusterEvent event) throws Exception
  {
    HelixManager manager = event.getAttribute("helixmanager");
    ClusterDataCache cache = event.getAttribute("ClusterDataCache");
    Map<String, Resource> resourceMap = event.getAttribute(AttributeName.RESOURCES.toString());
    CurrentStateOutput currentStateOutput = event.getAttribute(AttributeName.CURRENT_STATE
        .toString());
    BestPossibleStateOutput bestPossibleStateOutput = event
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  public static class StoreAccessOneNodeTransition extends MockTransition
  {
    @Override
    public void doTransition(Message message, NotificationContext context) throws InterruptedException
    {
      HelixManager manager = context.getManager();
      ZkHelixPropertyStore<ZNRecord> store = manager.getHelixPropertyStore();
      final String setPath = "/TEST_PERF/set";
      final String updatePath = "/TEST_PERF/update";
      final String key = message.getPartitionName();
      try
      {
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  public static class StoreAccessDiffNodeTransition extends MockTransition
  {
    @Override
    public void doTransition(Message message, NotificationContext context) throws InterruptedException
    {
      HelixManager manager = context.getManager();
      ZkHelixPropertyStore<ZNRecord> store = manager.getHelixPropertyStore();
      final String setPath = "/TEST_PERF/set/" + message.getPartitionName();
      final String updatePath = "/TEST_PERF/update/" + message.getPartitionName();
      // final String key = message.getPartitionName();
      try
      {
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  @Test ()
  public void testNormalMsgExecution() throws InterruptedException
  {
    System.out.println("START TestCMTaskExecutor.testNormalMsgExecution()");
    HelixTaskExecutor executor = new HelixTaskExecutor();
    HelixManager manager = new MockClusterManager();

    TestMessageHandlerFactory factory = new TestMessageHandlerFactory();
    executor.registerMessageHandlerFactory(factory.getMessageType(), factory);

    TestMessageHandlerFactory2 factory2 = new TestMessageHandlerFactory2();
    executor.registerMessageHandlerFactory(factory2.getMessageType(), factory2);

    NotificationContext changeContext = new NotificationContext(manager);
    List<Message> msgList = new ArrayList<Message>();

    int nMsgs1 = 5;
    for(int i = 0; i < nMsgs1; i++)
    {
      Message msg = new Message(factory.getMessageType(), UUID.randomUUID().toString());
      msg.setTgtSessionId(manager.getSessionId());
      msg.setTgtName("Localhost_1123");
      msg.setSrcName("127.101.1.23_2234");
      msg.setCorrelationId(UUID.randomUUID().toString());
      msgList.add(msg);
    }


    int nMsgs2 = 6;
    for(int i = 0; i < nMsgs2; i++)
    {
      Message msg = new Message(factory2.getMessageType(), UUID.randomUUID().toString());
      msg.setTgtSessionId(manager.getSessionId());
      msg.setTgtName("Localhost_1123");
      msg.setSrcName("127.101.1.23_2234");
      msg.setCorrelationId(UUID.randomUUID().toString());
      msgList.add(msg);
    }
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  • org.apache.helix.controller.stages.ExternalViewComputeStage
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