Package com.linkedin.helix.PropertyKey

Examples of com.linkedin.helix.PropertyKey.Builder

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        LOG.debug(Thread.currentThread().getId() + " START:INVOKE "
            + changeContext.getPathChanged() + " listener:"
            + _listener.getClass().getCanonicalName());
      }
     
      Builder keyBuilder = _accessor.keyBuilder();
     
      if (_changeType == IDEAL_STATE)
      {
        // System.err.println("ideal state change");
        IdealStateChangeListener idealStateChangeListener = (IdealStateChangeListener) _listener;
        subscribeForChanges(changeContext, true, true);
        List<IdealState> idealStates = _accessor.getChildValues(keyBuilder.idealStates());
        idealStateChangeListener.onIdealStateChange(idealStates, changeContext);

      } else if (_changeType == CONFIG)
      {

        ConfigChangeListener configChangeListener = (ConfigChangeListener) _listener;
        subscribeForChanges(changeContext, true, true);
        List<InstanceConfig> configs = _accessor.getChildValues(keyBuilder.instanceConfigs());
        configChangeListener.onConfigChange(configs, changeContext);

      } else if (_changeType == LIVE_INSTANCE)
      {
        LiveInstanceChangeListener liveInstanceChangeListener = (LiveInstanceChangeListener) _listener;
        subscribeForChanges(changeContext, true, false);
        List<LiveInstance> liveInstances = _accessor.getChildValues(keyBuilder.liveInstances());
        liveInstanceChangeListener.onLiveInstanceChange(liveInstances, changeContext);

      } else if (_changeType == CURRENT_STATE)
      {
        CurrentStateChangeListener currentStateChangeListener;
        currentStateChangeListener = (CurrentStateChangeListener) _listener;
        subscribeForChanges(changeContext, true, true);
        String instanceName = HelixUtil.getInstanceNameFromPath(_path);
        String[] pathParts = _path.split("/");
        List<CurrentState> currentStates = _accessor.getChildValues(keyBuilder.currentStates(instanceName, pathParts[pathParts.length - 1]));
        currentStateChangeListener.onStateChange(instanceName, currentStates, changeContext);

      } else if (_changeType == MESSAGE)
      {
        MessageListener messageListener = (MessageListener) _listener;
        subscribeForChanges(changeContext, true, false);
        String instanceName = _manager.getInstanceName();
        List<Message> messages = _accessor.getChildValues(keyBuilder.messages(instanceName));
        messageListener.onMessage(instanceName, messages, changeContext);
      } else if (_changeType == EXTERNAL_VIEW)
      {
        ExternalViewChangeListener externalViewListener = (ExternalViewChangeListener) _listener;
        subscribeForChanges(changeContext, true, true);
        List<ExternalView> externalViewList = _accessor.getChildValues(keyBuilder.externalViews());
        externalViewListener.onExternalViewChange(externalViewList, changeContext);
      } else if (_changeType == ChangeType.CONTROLLER)
      {
        ControllerChangeListener controllerChangelistener = (ControllerChangeListener) _listener;
        subscribeForChanges(changeContext, true, false);
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  public void invoke(NotificationContext changeContext) throws Exception
  {
    // This allows the listener to work with one change at a time
    synchronized (_manager)
    {
      Builder keyBuilder = _accessor.keyBuilder();
      long start = System.currentTimeMillis();
      if (logger.isInfoEnabled())
      {
        logger.info(Thread.currentThread().getId() + " START:INVOKE "
        // + changeContext.getPathChanged()
            + _path + " listener:" + _listener.getClass().getCanonicalName());
      }

      if (_changeType == IDEAL_STATE)
      {

        IdealStateChangeListener idealStateChangeListener =
            (IdealStateChangeListener) _listener;
        subscribeForChanges(changeContext, _path, true, true);
        List<IdealState> idealStates = _accessor.getChildValues(keyBuilder.idealStates());

        idealStateChangeListener.onIdealStateChange(idealStates, changeContext);

      }
      else if (_changeType == CONFIG)
      {

        ConfigChangeListener configChangeListener = (ConfigChangeListener) _listener;
        subscribeForChanges(changeContext, _path, true, true);
        List<InstanceConfig> configs =
            _accessor.getChildValues(keyBuilder.instanceConfigs());

        configChangeListener.onConfigChange(configs, changeContext);

      }
      else if (_changeType == LIVE_INSTANCE)
      {
        LiveInstanceChangeListener liveInstanceChangeListener =
            (LiveInstanceChangeListener) _listener;
        subscribeForChanges(changeContext, _path, true, false);
        List<LiveInstance> liveInstances =
            _accessor.getChildValues(keyBuilder.liveInstances());

        liveInstanceChangeListener.onLiveInstanceChange(liveInstances, changeContext);

      }
      else if (_changeType == CURRENT_STATE)
      {
        CurrentStateChangeListener currentStateChangeListener;
        currentStateChangeListener = (CurrentStateChangeListener) _listener;
        subscribeForChanges(changeContext, _path, true, true);
        String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
        String[] pathParts = _path.split("/");

        // TODO: fix this
        List<CurrentState> currentStates =
            _accessor.getChildValues(keyBuilder.currentStates(instanceName,
                                                              pathParts[pathParts.length - 1]));

        currentStateChangeListener.onStateChange(instanceName,
                                                 currentStates,
                                                 changeContext);

      }
      else if (_changeType == MESSAGE)
      {
        MessageListener messageListener = (MessageListener) _listener;
        subscribeForChanges(changeContext, _path, true, false);
        String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
        List<Message> messages =
            _accessor.getChildValues(keyBuilder.messages(instanceName));

        messageListener.onMessage(instanceName, messages, changeContext);

      }
      else if (_changeType == MESSAGES_CONTROLLER)
      {
        MessageListener messageListener = (MessageListener) _listener;
        subscribeForChanges(changeContext, _path, true, false);
        List<Message> messages =
            _accessor.getChildValues(keyBuilder.controllerMessages());

        messageListener.onMessage(_manager.getInstanceName(), messages, changeContext);

      }
      else if (_changeType == EXTERNAL_VIEW)
      {
        ExternalViewChangeListener externalViewListener =
            (ExternalViewChangeListener) _listener;
        subscribeForChanges(changeContext, _path, true, true);
        List<ExternalView> externalViewList =
            _accessor.getChildValues(keyBuilder.externalViews());

        externalViewListener.onExternalViewChange(externalViewList, changeContext);
      }
      else if (_changeType == ChangeType.CONTROLLER)
      {
        ControllerChangeListener controllerChangelistener =
            (ControllerChangeListener) _listener;
        subscribeForChanges(changeContext, _path, true, false);
        controllerChangelistener.onControllerChange(changeContext);
      }
      else if (_changeType == ChangeType.HEALTH)
      {
        HealthStateChangeListener healthStateChangeListener =
            (HealthStateChangeListener) _listener;
        subscribeForChanges(changeContext, _path, true, true); // TODO: figure out
        // settings here
        String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);

        List<HealthStat> healthReportList =
            _accessor.getChildValues(keyBuilder.healthReports(instanceName));

        healthStateChangeListener.onHealthChange(instanceName,
                                                 healthReportList,
                                                 changeContext);
      }
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            messageTemplate,
            callback,
            timeOut);
      }
      HelixDataAccessor accessor = _manager.getHelixDataAccessor();
      Builder keyBuilder = accessor.keyBuilder();

      // Record the number of messages sent into status updates
      Map<String, String> sendSummary = new HashMap<String, String>();
      sendSummary.put("MessageCount", "" + nMsgsSent);
     
      ZNRecord statusUpdate = accessor.getProperty(
          keyBuilder.controllerTaskStatus(MessageType.SCHEDULER_MSG.toString(),
              _message.getMsgId())).getRecord();

      statusUpdate.getMapFields().put("SentMessageCount", sendSummary);

      accessor.setProperty(keyBuilder.controllerTaskStatus(
          MessageType.SCHEDULER_MSG.toString(), _message.getMsgId()),
          new StatusUpdate(statusUpdate));

      result.getTaskResultMap().put(
          "ControllerResult",
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          + clusterName);
    }

    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    return accessor.getProperty(keyBuilder.instanceConfig(instanceName));
  }
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    // add a new live instance
    ZkClient zkClient = new ZkClient(ZK_ADDR);
    zkClient.setZkSerializer(new ZNRecordSerializer());
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(_clusterName, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    LiveInstance newLiveIns = new LiveInstance("newLiveInstance");
    newLiveIns.setHelixVersion("0.0.0");
    newLiveIns.setSessionId("randomSessionId");
    accessor.setProperty(keyBuilder.liveInstance("newLiveInstance"), newLiveIns);

    Thread.sleep(1000);  // wait for the CALLBACK type callback to finish
    Assert.assertTrue(_callback._isCallbackInvoked);

    System.out.println("END " + _clusterName + " at " + new Date(System.currentTimeMillis()));
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  @Override
  public void enableCluster(String clusterName, boolean enabled)
  {
    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    if (enabled)
    {
      accessor.removeProperty(keyBuilder.pause());
    }
    else
    {
      accessor.createProperty(keyBuilder.pause(), new PauseSignal("pause"));
    }
  }
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                             String resourceName,
                             List<String> partitionNames)
  {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    // check the instance is alive
    LiveInstance liveInstance =
        accessor.getProperty(keyBuilder.liveInstance(instanceName));
    if (liveInstance == null)
    {
      throw new HelixException("Can't reset state for " + resourceName + "/"
          + partitionNames + " on " + instanceName + ", because " + instanceName
          + " is not alive");
    }

    // check resource group exists
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates(resourceName));
    if (idealState == null)
    {
      throw new HelixException("Can't reset state for " + resourceName + "/"
          + partitionNames + " on " + instanceName + ", because " + resourceName
          + " is not added");
    }

    // check partition exists in resource group
    Set<String> resetPartitionNames = new HashSet<String>(partitionNames);
    if (idealState.getIdealStateMode() == IdealStateModeProperty.CUSTOMIZED)
    {
      Set<String> partitions =
          new HashSet<String>(idealState.getRecord().getMapFields().keySet());
      if (!partitions.containsAll(resetPartitionNames))
      {
        throw new HelixException("Can't reset state for " + resourceName + "/"
            + partitionNames + " on " + instanceName + ", because not all "
            + partitionNames + " exist");
      }
    }
    else
    {
      Set<String> partitions =
          new HashSet<String>(idealState.getRecord().getListFields().keySet());
      if (!partitions.containsAll(resetPartitionNames))
      {
        throw new HelixException("Can't reset state for " + resourceName + "/"
            + partitionNames + " on " + instanceName + ", because not all "
            + partitionNames + " exist");
      }
    }

    // check partition is in ERROR state
    String sessionId = liveInstance.getSessionId();
    CurrentState curState =
        accessor.getProperty(keyBuilder.currentState(instanceName,
                                                     sessionId,
                                                     resourceName));
    for (String partitionName : resetPartitionNames)
    {
      if (!curState.getState(partitionName).equals("ERROR"))
      {
        throw new HelixException("Can't reset state for " + resourceName + "/"
            + partitionNames + " on " + instanceName + ", because not all "
            + partitionNames + " are in ERROR state");
      }
    }

    // check stateModelDef exists and get initial state
    String stateModelDef = idealState.getStateModelDefRef();
    StateModelDefinition stateModel =
        accessor.getProperty(keyBuilder.stateModelDef(stateModelDef));
    if (stateModel == null)
    {
      throw new HelixException("Can't reset state for " + resourceName + "/"
          + partitionNames + " on " + instanceName + ", because " + stateModelDef
          + " is NOT found");
    }

    // check there is no pending messages for the partitions exist
    List<Message> messages = accessor.getChildValues(keyBuilder.messages(instanceName));
    for (Message message : messages)
    {
      if (!MessageType.STATE_TRANSITION.toString().equalsIgnoreCase(message.getMsgType())
          || !sessionId.equals(message.getTgtSessionId())
          || !resourceName.equals(message.getResourceName())
          || !resetPartitionNames.contains(message.getPartitionName()))
      {
        continue;
      }

      throw new HelixException("Can't reset state for " + resourceName + "/"
          + partitionNames + " on " + instanceName
          + ", because a pending message exists: " + message);
    }

    String adminName = null;
    try
    {
      adminName = InetAddress.getLocalHost().getCanonicalHostName() + "-ADMIN";
    }
    catch (UnknownHostException e)
    {
      // can ignore it
      logger.info("Unable to get host name. Will set it to UNKNOWN, mostly ignorable", e);
      adminName = "UNKNOWN";
    }

    List<Message> resetMessages = new ArrayList<Message>();
    List<PropertyKey> messageKeys = new ArrayList<PropertyKey>();
    for (String partitionName : resetPartitionNames)
    {
      // send ERROR to initialState message
      String msgId = UUID.randomUUID().toString();
      Message message = new Message(MessageType.STATE_TRANSITION, msgId);
      message.setSrcName(adminName);
      message.setTgtName(instanceName);
      message.setMsgState(MessageState.NEW);
      message.setPartitionName(partitionName);
      message.setResourceName(resourceName);
      message.setTgtSessionId(sessionId);
      message.setStateModelDef(stateModelDef);
      message.setFromState("ERROR");
      message.setToState(stateModel.getInitialState());
      message.setStateModelFactoryName(idealState.getStateModelFactoryName());

      resetMessages.add(message);
      messageKeys.add(keyBuilder.message(instanceName, message.getId()));
    }

    accessor.setChildren(messageKeys, resetMessages);
  }
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      return;
    }
    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)
    {
      LOG.warn("No controller exists for cluster:"
          + changeContext.getManager().getClusterName());
      return;
    }
    else
    {
      String leaderName = leader.getInstanceName();

      String instanceName = changeContext.getManager().getInstanceName();
      if (leaderName == null || !leaderName.equals(instanceName))
      {
        LOG.warn("leader name does NOT match, my name: " + instanceName + ", leader: "
            + leader);
        return;
      }
    }

    PauseSignal pauseSignal = accessor.getProperty(keyBuilder.pause());
    if (pauseSignal != null)
    {
      _paused = true;
      LOG.info("controller is now paused");
    }
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  public void resetInstance(String clusterName, List<String> instanceNames)
  {
    // TODO: not mp-safe
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();
    List<ExternalView> extViews = accessor.getChildValues(keyBuilder.externalViews());

    Set<String> resetInstanceNames = new HashSet<String>(instanceNames);
    for (String instanceName : resetInstanceNames)
    {
      List<String> resetPartitionNames = new ArrayList<String>();
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  Map<String, LiveInstance> lastInstances = _lastSeenInstances.get();
  Map<String, LiveInstance> lastSessions = _lastSeenSessions.get();
 
    HelixManager manager = changeContext.getManager();
    Builder keyBuilder = new Builder(manager.getClusterName());
    if (lastSessions != null) {
      for (String session : lastSessions.keySet()) {
        if (!curSessions.containsKey(session)) {
          // remove current-state listener for expired session
            String instanceName = lastSessions.get(session).getInstanceName();
          manager.removeListener(keyBuilder.currentStates(instanceName, session), this);
        }
      }
    }
   
    if (lastInstances != null) {
      for (String instance : lastInstances.keySet()) {
        if (!curInstances.containsKey(instance)) {
          // remove message listener for disconnected instances
          manager.removeListener(keyBuilder.messages(instance), this);
        }
      }
    }
   
  for (String session : curSessions.keySet()) {
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