Package com.linkedin.helix

Examples of com.linkedin.helix.HelixException

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                               String stateModelDef,
                               StateModelDefinition stateModel)
  {
    if (!ZKUtil.isClusterSetup(clusterName, _zkClient))
    {
      throw new HelixException("cluster " + clusterName + " is not setup yet");
    }
    String stateModelDefPath = HelixUtil.getStateModelDefinitionPath(clusterName);
    String stateModelPath = stateModelDefPath + "/" + stateModelDef;
    if (_zkClient.exists(stateModelPath))
    {
      logger.warn("Skip the operation.State Model directory exists:" + stateModelPath);
      throw new HelixException("State model path " + stateModelPath + " already exists.");
    }

    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();
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  @Override
  public void addStat(String clusterName, final String statName)
  {
    if (!ZKUtil.isClusterSetup(clusterName, _zkClient))
    {
      throw new HelixException("cluster " + clusterName + " is not setup yet");
    }

    String persistentStatsPath =
        PropertyPathConfig.getPath(PropertyType.PERSISTENTSTATS, clusterName);
    ZkBaseDataAccessor<ZNRecord> baseAccessor =
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  @Override
  public void addAlert(final String clusterName, final String alertName)
  {
    if (!ZKUtil.isClusterSetup(clusterName, _zkClient))
    {
      throw new HelixException("cluster " + clusterName + " is not setup yet");
    }

    ZkBaseDataAccessor<ZNRecord> baseAccessor =
        new ZkBaseDataAccessor<ZNRecord>(_zkClient);
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    Builder keyBuilder = accessor.keyBuilder();

    String root = "/" + clusterName;
    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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  @Override
  public void dropStat(String clusterName, final String statName)
  {
    if (!ZKUtil.isClusterSetup(clusterName, _zkClient))
    {
      throw new HelixException("cluster " + clusterName + " is not setup yet");
    }

    String persistentStatsPath =
        PropertyPathConfig.getPath(PropertyType.PERSISTENTSTATS, clusterName);
    ZkBaseDataAccessor<ZNRecord> baseAccessor =
        new ZkBaseDataAccessor<ZNRecord>(_zkClient);

    baseAccessor.update(persistentStatsPath, new DataUpdater<ZNRecord>()
    {

      @Override
      public ZNRecord update(ZNRecord statsRec)
      {
        if (statsRec == null)
        {
          throw new HelixException("No stats record in ZK, nothing to drop");
        }

        Map<String, Map<String, String>> currStatMap = statsRec.getMapFields();
        Map<String, Map<String, String>> newStatMap = StatsHolder.parseStat(statName);
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      JsonParameters jsonParameters = new JsonParameters(entity);
      String command = jsonParameters.getCommand();

      if (command == null)
      {
        throw new HelixException("Could NOT find 'command' in parameterMap: " + jsonParameters._parameterMap);
      }
      else if (command.equalsIgnoreCase(ClusterSetup.enableCluster))
      {
        boolean enabled =
            Boolean.parseBoolean(jsonParameters.getParameter(JsonParameters.ENABLED));

        setupTool.getClusterManagementTool().enableCluster(clusterName, enabled);
      }
      else
      {
        throw new HelixException("Unsupported command: " + command
                                 + ". Should be one of [" + ClusterSetup.enableCluster + "]");
      }
     
      getResponse().setEntity(getControllerRepresentation(clusterName));
      getResponse().setStatus(Status.SUCCESS_OK);
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  @Override
  public void connect()
  {
    if (!isClusterSetup(_clusterName))
    {
      throw new HelixException("Initial cluster structure is not set up for cluster:"
          + _clusterName);
    }
    _messagingService.onConnected();
    _store.start();
    _isConnected = true;
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  private void addLiveInstance()
  {
    if (!isClusterSetup(_clusterName))
    {
      throw new HelixException("Initial cluster structure is not set up for cluster:"
          + _clusterName);
    }

    if (!isInstanceSetup())
    {
      throw new HelixException("Instance is not configured for instance:" + _instanceName
          + " instanceType:" + _instanceType);
    }

    LiveInstance liveInstance = new LiveInstance(_instanceName);
    liveInstance.setSessionId(_sessionId);
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  private FileCallbackHandler createCallBackHandler(String path, Object listener,
      EventType[] eventTypes, ChangeType changeType)
  {
    if (listener == null)
    {
      throw new HelixException("Listener cannot be null");
    }
    return new FileCallbackHandler(this, path, listener, eventTypes, changeType);
  }
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  private void checkConnected()
  {
    if (!isConnected())
    {
      throw new HelixException("ClusterManager not connected. Call clusterManager.connect()");
    }
  }
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Related Classes of com.linkedin.helix.HelixException

  • com.linkedin.helix.alerts.AccumulateAggregator
  • com.linkedin.helix.alerts.AlertParser
  • com.linkedin.helix.alerts.AlertProcessor
  • com.linkedin.helix.alerts.DecayAggregator
  • com.linkedin.helix.alerts.ExpressionParser
  • com.linkedin.helix.alerts.StatsHolder
  • com.linkedin.helix.josql.ClusterJosqlQueryProcessor
  • com.linkedin.helix.manager.file.DynamicFileHelixManager
  • com.linkedin.helix.manager.zk.DefaultControllerMessageHandlerFactory
  • com.linkedin.helix.manager.zk.DefaultControllerMessageHandlerFactory$DefaultControllerMessageHandler
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