Package org.apache.helix.PropertyKey

Examples of org.apache.helix.PropertyKey.Builder.controllerLeader()

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    election = new DistributedLeaderElection(manager, controller1, timerTasks);
    context = new NotificationContext(manager);
    context.setType(NotificationContext.Type.INIT);
    election.onControllerChange(context);
    // leaderRecord = _gZkClient.<ZNRecord> readData(path);
    liveInstance = accessor.getProperty(keyBuilder.controllerLeader());
    AssertJUnit.assertEquals(controllerName, liveInstance.getInstanceName());
    // AssertJUnit.assertNull(election.getController());
    // AssertJUnit.assertNull(election.getLeader());

    System.out.println("END TestDistControllerElection at " + new Date(System.currentTimeMillis()));
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        new DistributedLeaderElection(manager, controller0, timerTasks);
    NotificationContext context = new NotificationContext(manager);
    context.setType(NotificationContext.Type.CALLBACK);
    election.onControllerChange(context);

    LiveInstance liveInstance = accessor.getProperty(keyBuilder.controllerLeader());
    AssertJUnit.assertEquals(controllerName, liveInstance.getInstanceName());

    // path = PropertyPathConfig.getPath(PropertyType.LEADER, clusterName);
    // ZNRecord leaderRecord = _gZkClient.<ZNRecord> readData(path);
    // AssertJUnit.assertEquals(controllerName, leaderRecord.getSimpleField("LEADER"));
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    election = new DistributedLeaderElection(manager, controller1, timerTasks);
    context = new NotificationContext(manager);
    context.setType(NotificationContext.Type.CALLBACK);
    election.onControllerChange(context);

    liveInstance = accessor.getProperty(keyBuilder.controllerLeader());
    AssertJUnit.assertEquals(controllerName, liveInstance.getInstanceName());

    // leaderRecord = _gZkClient.<ZNRecord> readData(path);
    // AssertJUnit.assertEquals(controllerName, leaderRecord.getSimpleField("LEADER"));
    // AssertJUnit.assertNull(election.getController());
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        LOG.info(_manager.getInstanceName() + " is trying to acquire leadership for cluster: "
            + _manager.getClusterName());
        HelixDataAccessor accessor = manager.getHelixDataAccessor();
        Builder keyBuilder = accessor.keyBuilder();

        while (accessor.getProperty(keyBuilder.controllerLeader()) == null) {
          boolean success = tryUpdateController(manager);
          if (success) {
            LOG.info(_manager.getInstanceName() + " acquired leadership for cluster: "
                + _manager.getClusterName());
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    LiveInstance leader = new LiveInstance(manager.getInstanceName());
    try {
      leader.setLiveInstance(ManagementFactory.getRuntimeMXBean().getName());
      leader.setSessionId(manager.getSessionId());
      leader.setHelixVersion(manager.getVersion());
      boolean success = accessor.createProperty(keyBuilder.controllerLeader(), leader);
      if (success) {
        return true;
      } else {
        LOG.info("Unable to become leader probably because some other controller becames the leader");
      }
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      LOG.error(
          "Exception when trying to updating leader record in cluster:" + manager.getClusterName()
              + ". Need to check again whether leader node has been created or not", e);
    }

    leader = accessor.getProperty(keyBuilder.controllerLeader());
    if (leader != null) {
      String leaderSessionId = leader.getSessionId();
      LOG.info("Leader exists for cluster: " + manager.getClusterName() + ", currentLeader: "
          + leader.getInstanceName() + ", leaderSessionId: " + leaderSessionId);
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    if (accessor.getChildNames(keyBuilder.liveInstances()).size() > 0) {
      throw new HelixException(
          "There are still live instances in the cluster, shut them down first.");
    }

    if (accessor.getProperty(keyBuilder.controllerLeader()) != null) {
      throw new HelixException("There are still LEADER in the cluster, shut them down first.");
    }

    _zkClient.deleteRecursive(root);
  }
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    }
    HelixDataAccessor accessor = changeContext.getManager().getHelixDataAccessor();

    // double check if this controller is the leader
    Builder keyBuilder = accessor.keyBuilder();
    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    if (leader == null) {
      logger
          .warn("No controller exists for cluster:" + changeContext.getManager().getClusterName());
      return;
    } else {
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        new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(controllerClusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    for (int i = 0; i < n; i++)
    {
      LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
      String leaderName = leader.getId();
      int j = Integer.parseInt(leaderName.substring(leaderName.lastIndexOf('_') + 1));
      controllers[j].syncStop();
     
      result =
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  {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    if (leader == null)
    {
      return null;
    }
    return leader.getInstanceName();
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