Java Code Examples for org.apache.helix.model.Message#setSrcSessionId()

private Message generateMessage(String from, String to) {
  String uuid = UUID.randomUUID().toString();
  Message message = new Message(Message.MessageType.STATE_TRANSITION, uuid);
  message.setSrcName("ADMIN");
  message.setTgtName(_participant.getInstanceName());
  message.setMsgState(Message.MessageState.NEW);
  message.setPartitionName("P");
  message.setResourceName(WorkflowGenerator.DEFAULT_TGT_DB);
  message.setFromState(from);
  message.setToState(to);
  message.setTgtSessionId(_participant.getSessionId());
  message.setSrcSessionId(_manager.getSessionId());
  message.setStateModelDef("OnlineOffline");
  message.setStateModelFactoryName("DEFAULT");
  return message;
}
 

private Message newMessage(String resourceName, String partitionName, String instanceName,
    String fromState, String toState) {
  String uuid = UUID.randomUUID().toString();
  Message message = new Message(MessageType.STATE_TRANSITION, uuid);
  message.setSrcName("controller");
  message.setTgtName(instanceName);
  message.setMsgState(MessageState.NEW);
  message.setResourceName(resourceName);
  message.setPartitionName(partitionName);
  message.setFromState(fromState);
  message.setToState(toState);
  message.setTgtSessionId("sessionId");
  message.setSrcSessionId("sessionId");
  message.setStateModelDef("MasterSlave");
  message.setStateModelFactoryName("DEFAULT");
  message.setBucketSize(0);
  return message;
}
 

private Message createStateTransitionMessage(HelixManager manager, Resource resource,
    String partitionName, String instanceName, String currentState, String nextState,
    String sessionId, String stateModelDefName) {
  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(resource.getResourceName());
  message.setFromState(currentState);
  message.setToState(nextState);
  message.setTgtSessionId(sessionId);
  message.setSrcSessionId(manager.getSessionId());
  message.setStateModelDef(stateModelDefName);
  message.setStateModelFactoryName(resource.getStateModelFactoryname());
  message.setBucketSize(resource.getBucketSize());

  if (resource.getResourceGroupName() != null) {
    message.setResourceGroupName(resource.getResourceGroupName());
  }
  if (resource.getResourceTag() != null) {
    message.setResourceTag(resource.getResourceTag());
  }

  return message;
}
 

private Message createStateTransitionCancellationMessage(HelixManager manager, Resource resource,
    String partitionName, String instanceName, String sessionId, String stateModelDefName,
    String fromState, String toState, String nextState, Message cancellationMessage,
    boolean isCancellationEnabled, String currentState) {

  if (isCancellationEnabled && cancellationMessage == null) {
    LogUtil.logInfo(logger, _eventId,
        "Send cancellation message of the state transition for " + resource.getResourceName()
            + "." + partitionName + " on " + instanceName + ", currentState: " + currentState
            + ", nextState: " + (nextState == null ? "N/A" : nextState));

    String uuid = UUID.randomUUID().toString();
    Message message = new Message(MessageType.STATE_TRANSITION_CANCELLATION, uuid);
    message.setSrcName(manager.getInstanceName());
    message.setTgtName(instanceName);
    message.setMsgState(MessageState.NEW);
    message.setPartitionName(partitionName);
    message.setResourceName(resource.getResourceName());
    message.setFromState(fromState);
    message.setToState(toState);
    message.setTgtSessionId(sessionId);
    message.setSrcSessionId(manager.getSessionId());
    message.setStateModelDef(stateModelDefName);
    message.setStateModelFactoryName(resource.getStateModelFactoryname());
    message.setBucketSize(resource.getBucketSize());
    return message;
  }

  return null;
}
 

@Test
public void testStateMismatch() throws InterruptedException {
  // String controllerName = CONTROLLER_PREFIX + "_0";

  HelixManager manager = _controller; // _startCMResultMap.get(controllerName)._manager;
  HelixDataAccessor accessor = manager.getHelixDataAccessor();
  Builder kb = accessor.keyBuilder();
  ExternalView ev = accessor.getProperty(kb.externalView(TEST_DB));
  Map<String, LiveInstance> liveinstanceMap =
      accessor.getChildValuesMap(accessor.keyBuilder().liveInstances(), true);

  for (String instanceName : liveinstanceMap.keySet()) {
    String sessionid = liveinstanceMap.get(instanceName).getEphemeralOwner();
    for (String partition : ev.getPartitionSet()) {
      if (ev.getStateMap(partition).containsKey(instanceName)) {
        String uuid = UUID.randomUUID().toString();
        Message message = new Message(MessageType.STATE_TRANSITION, uuid);
        boolean rand = new Random().nextInt(10) > 5;
        if (ev.getStateMap(partition).get(instanceName).equals("MASTER")) {
          message.setSrcName(manager.getInstanceName());
          message.setTgtName(instanceName);
          message.setMsgState(MessageState.NEW);
          message.setPartitionName(partition);
          message.setResourceName(TEST_DB);
          message.setFromState(rand ? "SLAVE" : "OFFLINE");
          message.setToState(rand ? "MASTER" : "SLAVE");
          message.setTgtSessionId(sessionid);
          message.setSrcSessionId(manager.getSessionId());
          message.setStateModelDef("MasterSlave");
          message.setStateModelFactoryName("DEFAULT");
        } else if (ev.getStateMap(partition).get(instanceName).equals("SLAVE")) {
          message.setSrcName(manager.getInstanceName());
          message.setTgtName(instanceName);
          message.setMsgState(MessageState.NEW);
          message.setPartitionName(partition);
          message.setResourceName(TEST_DB);
          message.setFromState(rand ? "MASTER" : "OFFLINE");
          message.setToState(rand ? "SLAVE" : "SLAVE");
          message.setTgtSessionId(sessionid);
          message.setSrcSessionId(manager.getSessionId());
          message.setStateModelDef("MasterSlave");
          message.setStateModelFactoryName("DEFAULT");
        }
        accessor.setProperty(accessor.keyBuilder().message(instanceName, message.getMsgId()),
            message);
      }
    }
  }
  Thread.sleep(3000);
  ExternalView ev2 = accessor.getProperty(kb.externalView(TEST_DB));
  Assert.assertTrue(ev.equals(ev2));
}
 

@Test
public void testSyncSessionToController() throws Exception {
  System.out
      .println("START testSyncSessionToController at " + new Date(System.currentTimeMillis()));

  String clusterName = getShortClassName();
  MockParticipantManager[] participants = new MockParticipantManager[5];
  int resourceNb = 10;
  TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
      "localhost", // participant name prefix
      "TestDB", // resource name prefix
      resourceNb, // resources
      1, // partitions per resource
      5, // number of nodes
      1, // replicas
      "MasterSlave", true); // do rebalance

  ClusterControllerManager controller =
      new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
  controller.syncStart();

  // start participants
  for (int i = 0; i < 5; i++) {
    String instanceName = "localhost_" + (12918 + i);
    participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
    participants[i].syncStart();
  }

  ZKHelixManager zkHelixManager = new ZKHelixManager(clusterName, "controllerMessageListener",
      InstanceType.CONTROLLER, ZK_ADDR);
  zkHelixManager.connect();
  MockMessageListener mockMessageListener = new MockMessageListener();
  zkHelixManager.addControllerMessageListener(mockMessageListener);

  PropertyKey.Builder keyBuilder = new PropertyKey.Builder(clusterName);
  ZkBaseDataAccessor<ZNRecord> accessor = new ZkBaseDataAccessor<>(_gZkClient);
  String path = keyBuilder.liveInstance("localhost_12918").getPath();
  Stat stat = new Stat();
  ZNRecord data = accessor.get(path, stat, 2);
  data.getSimpleFields().put("SESSION_ID", "invalid-id");
  accessor.set(path, data, 2);
  Thread.sleep(2000);
  // Since we always read the content from ephemeral nodes, sync message won't be sent
  Assert.assertFalse(mockMessageListener.isSessionSyncMessageSent());

  // Even after reconnect, session sync won't happen
  ZkTestHelper.expireSession(participants[0].getZkClient());
  Assert.assertFalse(mockMessageListener.isSessionSyncMessageSent());

  // Inject an invalid session message to trigger sync message
  PropertyKey messageKey = keyBuilder.message("localhost_12918", "Mocked Invalid Message");
  Message msg = new Message(Message.MessageType.STATE_TRANSITION, "Mocked Invalid Message");
  msg.setSrcName(controller.getInstanceName());
  msg.setTgtSessionId("invalid-id");
  msg.setMsgState(Message.MessageState.NEW);
  msg.setMsgId("Mocked Invalid Message");
  msg.setTgtName("localhost_12918");
  msg.setPartitionName("foo");
  msg.setResourceName("bar");
  msg.setFromState("SLAVE");
  msg.setToState("MASTER");
  msg.setSrcSessionId(controller.getSessionId());
  msg.setStateModelDef("MasterSlave");
  msg.setStateModelFactoryName("DEFAULT");
  HelixDataAccessor dataAccessor = new ZKHelixDataAccessor(clusterName, accessor);
  dataAccessor.setProperty(messageKey, msg);
  Assert.assertTrue(TestHelper.verify(() -> mockMessageListener.isSessionSyncMessageSent(), 1500));

  // Cleanup
  controller.syncStop();
  zkHelixManager.disconnect();
  for (int i = 0; i < 5; i++) {
    participants[i].syncStop();
  }
  deleteCluster(clusterName);
}