Package org.apache.helix.model

Examples of org.apache.helix.model.Message

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    MessageThrottleStage throttleStage = new MessageThrottleStage();

    // test constraintSelection
    // message1: hit contraintSelection rule1 and rule2
    Message msg1 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-001", "OFFLINE", "SLAVE", "TestDB",
            "localhost_0");

    Map<ConstraintAttribute, String> msgAttr = ClusterConstraints.toConstraintAttributes(msg1);
    Set<ConstraintItem> matches = constraint.match(msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(containsConstraint(matches, constraint0));
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint2));
    Assert.assertTrue(containsConstraint(matches, constraint4));
    Assert.assertTrue(containsConstraint(matches, constraint5));

    matches = throttleStage.selectConstraints(matches, msgAttr);
    System.out.println(msg1 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 2);
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint5));

    // message2: hit contraintSelection rule1, rule2, and rule3
    Message msg2 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-002", "OFFLINE", "SLAVE", "TestDB",
            "localhost_1");

    msgAttr = ClusterConstraints.toConstraintAttributes(msg2);
    matches = constraint.match(msgAttr);
    System.out.println(msg2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 5);
    Assert.assertTrue(containsConstraint(matches, constraint0));
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint2));
    Assert.assertTrue(containsConstraint(matches, constraint3));
    Assert.assertTrue(containsConstraint(matches, constraint4));

    matches = throttleStage.selectConstraints(matches, msgAttr);
    System.out.println(msg2 + " matches(" + matches.size() + "): " + matches);
    Assert.assertEquals(matches.size(), 2);
    Assert.assertTrue(containsConstraint(matches, constraint1));
    Assert.assertTrue(containsConstraint(matches, constraint3));

    // test messageThrottleStage
    ClusterEvent event = new ClusterEvent("testEvent");
    event.addAttribute("helixmanager", manager);

    Pipeline dataRefresh = new Pipeline();
    dataRefresh.addStage(new ReadClusterDataStage());
    runPipeline(event, dataRefresh);
    runStage(event, new ResourceComputationStage());
    MessageSelectionStageOutput msgSelectOutput = new MessageSelectionStageOutput();

    Message msg3 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-003", "OFFLINE", "SLAVE", "TestDB",
            "localhost_0");

    Message msg4 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-004", "OFFLINE", "SLAVE", "TestDB",
            "localhost_0");

    Message msg5 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-005", "OFFLINE", "SLAVE", "TestDB",
            "localhost_0");

    Message msg6 =
        createMessage(MessageType.STATE_TRANSITION, "msgId-006", "OFFLINE", "SLAVE", "TestDB",
            "localhost_1");

    List<Message> selectMessages = new ArrayList<Message>();
    selectMessages.add(msg1);
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    System.out.println("START TestDefaultControllerMsgHandlerFactory at "
        + new Date(System.currentTimeMillis()));

    DefaultControllerMessageHandlerFactory facotry = new DefaultControllerMessageHandlerFactory();

    Message message = new Message(MessageType.NO_OP, "0");
    NotificationContext context = new NotificationContext(null);

    boolean exceptionCaught = false;
    try {
      MessageHandler handler = facotry.createHandler(message, context);
    } catch (HelixException e) {
      exceptionCaught = true;
    }
    AssertJUnit.assertTrue(exceptionCaught);

    message = new Message(MessageType.CONTROLLER_MSG, "1");
    exceptionCaught = false;
    try {
      MessageHandler handler = facotry.createHandler(message, context);
    } catch (HelixException e) {
      exceptionCaught = true;
    }
    AssertJUnit.assertFalse(exceptionCaught);

    Map<String, String> resultMap = new HashMap<String, String>();
    message = new Message(MessageType.NO_OP, "3");
    DefaultControllerMessageHandler defaultHandler =
        new DefaultControllerMessageHandler(message, context);
    try {
      defaultHandler.handleMessage();
    } catch (HelixException e) {
      exceptionCaught = true;
    } catch (InterruptedException e) {
      LOG.error("Interrupted handling message", e);
    }
    AssertJUnit.assertTrue(exceptionCaught);

    message = new Message(MessageType.CONTROLLER_MSG, "4");
    defaultHandler = new DefaultControllerMessageHandler(message, context);
    exceptionCaught = false;
    try {
      defaultHandler.handleMessage();
    } catch (HelixException e) {
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    int nMsgs = 5;

    List<Message> messageSent = new ArrayList<Message>();
    for (int i = 0; i < nMsgs; i++) {
      messageSent.add(new Message("Test", UUID.randomUUID().toString()));
    }

    callback.setMessagesSent(messageSent);

    for (int i = 0; i < nMsgs; i++) {
      AssertJUnit.assertFalse(callback.isDone());
      callback.onReply(new Message("TestReply", UUID.randomUUID().toString()));
    }
    AssertJUnit.assertTrue(callback.isDone());

    AssertJUnit.assertTrue(callback._onTimeOutCalled == 0);

    sleep(50);
    callback = new AsyncCallbackSample();
    callback.setMessagesSent(messageSent);
    callback.setTimeout(1000);
    sleep(50);
    callback.startTimer();
    AssertJUnit.assertFalse(callback.isTimedOut());
    for (int i = 0; i < nMsgs - 1; i++) {
      sleep(50);
      AssertJUnit.assertFalse(callback.isDone());
      AssertJUnit.assertTrue(callback._onReplyMessageCalled == i);
      callback.onReply(new Message("TestReply", UUID.randomUUID().toString()));
    }
    sleep(1000);
    AssertJUnit.assertTrue(callback.isTimedOut());
    AssertJUnit.assertTrue(callback._onTimeOutCalled == 1);
    AssertJUnit.assertFalse(callback.isDone());

    callback = new AsyncCallbackSample();
    callback.setMessagesSent(messageSent);
    callback.setTimeout(1000);
    callback.startTimer();
    sleep(50);
    AssertJUnit.assertFalse(callback.isTimedOut());
    for (int i = 0; i < nMsgs; i++) {
      AssertJUnit.assertFalse(callback.isDone());
      sleep(50);
      AssertJUnit.assertTrue(callback._onReplyMessageCalled == i);
      callback.onReply(new Message("TestReply", UUID.randomUUID().toString()));
    }
    AssertJUnit.assertTrue(callback.isDone());
    sleep(1300);
    AssertJUnit.assertFalse(callback.isTimedOut());
    AssertJUnit.assertTrue(callback._onTimeOutCalled == 0);
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  @Test()
  public void testCMTaskExecutor() throws Exception {
    System.out.println("START TestCMTaskExecutor");
    String msgId = "TestMessageId";
    Message message = new Message(MessageType.TASK_REPLY, msgId);

    message.setMsgId(msgId);
    message.setSrcName("cm-instance-0");
    message.setTgtName("cm-instance-1");
    message.setTgtSessionId("1234");
    message.setFromState("Offline");
    message.setToState("Slave");
    message.setPartitionName("TestDB_0");
    message.setResourceName("TestDB");
    message.setStateModelDef("MasterSlave");

    MockManager manager = new MockManager("clusterName");
    HelixDataAccessor accessor = manager.getHelixDataAccessor();
    StateModelDefinition stateModelDef =
        new StateModelDefinition(StateModelConfigGenerator.generateConfigForMasterSlave());
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    Criteria recipientCriteria = new Criteria();
    recipientCriteria.setInstanceName("localhost_12919");
    recipientCriteria.setRecipientInstanceType(InstanceType.PARTICIPANT);
    recipientCriteria.setSelfExcluded(true);

    Message template = new Message(factory.getMessageType(), UUID.randomUUID().toString());
    AssertJUnit.assertEquals(0, svc.send(recipientCriteria, template));

    recipientCriteria.setSelfExcluded(false);
    AssertJUnit.assertEquals(1, svc.send(recipientCriteria, template));
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  public void testAsyncCallbackSvc() throws Exception {
    AsyncCallbackService svc = new AsyncCallbackService();
    HelixManager manager = new MockHelixManager();
    NotificationContext changeContext = new NotificationContext(manager);

    Message msg = new Message(svc.getMessageType(), UUID.randomUUID().toString());
    msg.setTgtSessionId(manager.getSessionId());
    try {
      MessageHandler aHandler = svc.createHandler(msg, changeContext);
    } catch (HelixException e) {
      AssertJUnit.assertTrue(e.getMessage().indexOf(msg.getMsgId()) != -1);
    }
    Message msg2 = new Message("RandomType", UUID.randomUUID().toString());
    msg2.setTgtSessionId(manager.getSessionId());
    try {
      MessageHandler aHandler = svc.createHandler(msg2, changeContext);
    } catch (HelixException e) {
      AssertJUnit.assertTrue(e.getMessage().indexOf(msg2.getMsgId()) != -1);
    }
    Message msg3 = new Message(svc.getMessageType(), UUID.randomUUID().toString());
    msg3.setTgtSessionId(manager.getSessionId());
    msg3.setCorrelationId("wfwegw");
    try {
      MessageHandler aHandler = svc.createHandler(msg3, changeContext);
    } catch (HelixException e) {
      AssertJUnit.assertTrue(e.getMessage().indexOf(msg3.getMsgId()) != -1);
    }

    TestAsyncCallback callback = new TestAsyncCallback();
    String corrId = UUID.randomUUID().toString();
    svc.registerAsyncCallback(corrId, new TestAsyncCallback());
    svc.registerAsyncCallback(corrId, callback);

    List<Message> msgSent = new ArrayList<Message>();
    msgSent.add(new Message("Test", UUID.randomUUID().toString()));
    callback.setMessagesSent(msgSent);

    msg = new Message(svc.getMessageType(), UUID.randomUUID().toString());
    msg.setTgtSessionId("*");
    msg.setCorrelationId(corrId);

    MessageHandler aHandler = svc.createHandler(msg, changeContext);
    Map<String, String> resultMap = new HashMap<String, String>();
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      LiveInstance leader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
      if (leader == null) {
        throw new HelixException("There is no leader for the cluster " + clusterName);
      }

      Message schedulerMessage =
          new Message(MessageType.SCHEDULER_MSG, UUID.randomUUID().toString());
      schedulerMessage.getRecord().getSimpleFields().put(CRITERIA, criteriaString);

      schedulerMessage.getRecord().getMapFields().put(MESSAGETEMPLATE, messageTemplate);

      schedulerMessage.setTgtSessionId(leader.getSessionId());
      schedulerMessage.setTgtName("CONTROLLER");
      schedulerMessage.setSrcInstanceType(InstanceType.CONTROLLER);
      String taskQueueName =
          ClusterRepresentationUtil.getFormJsonParameterString(form, TASKQUEUENAME);
      if (taskQueueName != null && taskQueueName.length() > 0) {
        schedulerMessage.getRecord().setSimpleField(
            DefaultSchedulerMessageHandlerFactory.SCHEDULER_TASK_QUEUE, taskQueueName);
      }
      accessor.setProperty(accessor.keyBuilder().controllerMessage(schedulerMessage.getMsgId()),
          schedulerMessage);

      Map<String, String> resultMap = new HashMap<String, String>();
      resultMap.put("StatusUpdatePath", PropertyPathConfig.getPath(
          PropertyType.STATUSUPDATES_CONTROLLER, clusterName, MessageType.SCHEDULER_MSG.toString(),
          schedulerMessage.getMsgId()));
      resultMap.put("MessageType", Message.MessageType.SCHEDULER_MSG.toString());
      resultMap.put("MsgId", schedulerMessage.getMsgId());

      // Assemble the rest URL for task status update
      String ipAddress = InetAddress.getLocalHost().getCanonicalHostName();
      String url =
          "http://" + ipAddress + ":" + getContext().getAttributes().get(RestAdminApplication.PORT)
              + "/clusters/" + clusterName + "/Controller/statusUpdates/SCHEDULER_MSG/"
              + schedulerMessage.getMsgId();
      resultMap.put("statusUpdateUrl", url);

      getResponse().setEntity(ClusterRepresentationUtil.ObjectToJson(resultMap),
          MediaType.APPLICATION_JSON);
      getResponse().setStatus(Status.SUCCESS_OK);
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    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);
    }
    executor.onMessage("someInstance", msgList, changeContext);

    Thread.sleep(1000);
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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);
      Criteria recipientCriteria = new Criteria();
      recipientCriteria.setInstanceName("*");
      recipientCriteria.setRecipientInstanceType(InstanceType.PARTICIPANT);
      recipientCriteria.setResource(message.getResourceName());
      recipientCriteria.setPartition(message.getPartitionName());
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              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) {
                message.getRecord().setMapField(Message.Attributes.INNER_MESSAGE.toString(),
                    idealState.getRecord().getMapField(partition.getPartitionName()));
              }
            }
            // Set timeout of needed
            String stateTransition =
                currentState + "-" + nextState + "_" + Message.Attributes.TIMEOUT;
            if (idealState != null) {
              String timeOutStr = idealState.getRecord().getSimpleField(stateTransition);
              if (timeOutStr == null
                  && idealState.getStateModelDefRef().equalsIgnoreCase(
                      DefaultSchedulerMessageHandlerFactory.SCHEDULER_TASK_QUEUE)) {
                // scheduled task queue
                if (idealState.getRecord().getMapField(partition.getPartitionName()) != null) {
                  timeOutStr =
                      idealState.getRecord().getMapField(partition.getPartitionName())
                          .get(Message.Attributes.TIMEOUT.toString());
                }
              }
              if (timeOutStr != null) {
                try {
                  int timeout = Integer.parseInt(timeOutStr);
                  if (timeout > 0) {
                    message.setExecutionTimeout(timeout);
                  }
                } catch (Exception e) {
                  logger.error("", e);
                }
              }
            }
            message.getRecord().setSimpleField("ClusterEventName", event.getName());
            // output.addMessage(resourceName, partition, message);
            if (!messageMap.containsKey(desiredState)) {
              messageMap.put(desiredState, new ArrayList<Message>());
            }
            messageMap.get(desiredState).add(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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