Examples of com.linkedin.helix.model.LiveInstance

com.linkedin.helix.model.LiveInstance
Instance that connects to zookeeper

    // stop current leader in controller cluster
    ZkBaseDataAccessor<ZNRecord> baseAccessor =
        new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(controllerClusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    String leaderName = leader.getId();
    int j = Integer.parseInt(leaderName.substring(leaderName.lastIndexOf('_') + 1));
    controllers[j].syncStop();
    
    
    // setup the second cluster

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


    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance(instance));
    accessor.removeProperty(keyBuilder.stateTransitionStatus(instance,
                                                             liveInstance.getSessionId(),
                                                             resource,
                                                             partition));


  }

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                + new Timestamp(timestampVal) + "\nline:" + inputLine);
            lastTestStartTimestamp = timestampVal;
          }


          ZNRecord record = getZNRecord(inputLine);
          LiveInstance liveInstance = new LiveInstance(record);
          String session = getAttributeValue(inputLine, "session:");
          sessionMap.put(session, inputLine);
          System.out.println(new Timestamp(Long.parseLong(timestamp)) + ": create LIVEINSTANCE "
              + liveInstance.getInstanceName());
        }
        else if (inputLine.indexOf("closeSession") != -1)
        {
          // kill any instance
          String session = getAttributeValue(inputLine, "session:");
          if (sessionMap.containsKey(session))
          {
            if (timestampVal < lastTestStartTimestamp)
            {
              System.out.println("KILL node. SETTING lastTestStartTimestamp to " + timestampVal
                  + " line:" + inputLine);
              lastTestStartTimestamp = timestampVal;
            }
            String line = sessionMap.get(session);
            ZNRecord record = getZNRecord(line);
            LiveInstance liveInstance = new LiveInstance(record);


            System.out.println(new Timestamp(Long.parseLong(timestamp)) + ": close session "
                + liveInstance.getInstanceName());
            dump = true;
          }
        }
        else if (inputLine.indexOf("/" + clusterName + "/CONFIGS/PARTICIPANT") != -1)
        {
          // disable a partition
          String type = getAttributeValue(inputLine, "type:");
          if (type.equals("setData") && inputLine.indexOf("HELIX_DISABLED_PARTITION") != -1)
          {
            if (timestampVal < lastTestStartTimestamp)
            {
              System.out.println("DISABLE partition. SETTING lastTestStartTimestamp to " + timestampVal
                  + " line:" + inputLine);
              lastTestStartTimestamp = timestampVal;
            }
          }
        } else if (inputLine.indexOf("/" + clusterName + "/CONTROLLER/LEADER") != -1)
        {
          // leaderLine = inputLine;
          ZNRecord record = getZNRecord(inputLine);
          LiveInstance liveInstance = new LiveInstance(record);
          String session = getAttributeValue(inputLine, "session:");
          leaderSession = session;
          controllerStartTime = Long.parseLong(getAttributeValue(inputLine, "time:"));
          sessionMap.put(session, inputLine);
          System.out.println(new Timestamp(Long.parseLong(timestamp)) + ": create LEADER "
              + liveInstance.getInstanceName());
        }
        else if (inputLine.indexOf("/" + clusterName + "/") != -1
            && inputLine.indexOf("/CURRENTSTATES/") != -1)
        {
          String type = getAttributeValue(inputLine, "type:");

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    {
      return false;
    }


    Builder keyBuilder = _helixAccessor.keyBuilder();
    LiveInstance leader = _helixAccessor.getProperty(keyBuilder.controllerLeader());
    if (leader == null)
    {
      return false;
    }
    else
    {
      String leaderName = leader.getInstanceName();
      // TODO need check sessionId also, but in distributed mode, leader's
      // sessionId is
      // not equal to
      // the leader znode's sessionId field which is the sessionId of the
      // controller_participant that

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  void refreshZkPropertyTransferUrl()
  {
    try
    {
      LiveInstance leader = getProperty(keyBuilder().controllerLeader());
      if (leader != null)
      {
        _zkPropertyTransferSvcUrl = leader.getWebserviceUrl();
        LOG.info("_zkPropertyTransferSvcUrl : " + _zkPropertyTransferSvcUrl + " Controller " + leader.getInstanceName());
      }
      else
      {
        _zkPropertyTransferSvcUrl = null;
      }

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    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);

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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)
    {
      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: "

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    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)

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  {
    // DataAccessor dataAccessor = manager.getDataAccessor();
    HelixDataAccessor accessor = manager.getHelixDataAccessor();
    Builder keyBuilder = accessor.keyBuilder();


    LiveInstance leader = new LiveInstance(manager.getInstanceName());
    try
    {
      leader.setLiveInstance(ManagementFactory.getRuntimeMXBean().getName());
      // TODO: this session id is not the leader's session id in distributed mode
      leader.setSessionId(manager.getSessionId());
      leader.setHelixVersion(manager.getVersion());
      if(ZKPropertyTransferServer.getInstance() != null)
      {
        String zkPropertyTransferServiceUrl = ZKPropertyTransferServer.getInstance().getWebserviceUrl();
        if(zkPropertyTransferServiceUrl != null)
        {
          leader.setWebserviceUrl(zkPropertyTransferServiceUrl);
        }
      }
      else
      {
        LOG.warn("ZKPropertyTransferServer instnace is null");
      }
      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");
      }
    }
    catch (Exception e)
    {
      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 leaderName = leader.getInstanceName(); // leader.getLeader();
      LOG.info("Leader exists for cluster:" + manager.getClusterName()
          + ", currentLeader:" + leaderName);


      if (leaderName != null && leaderName.equals(manager.getInstanceName()))
      {

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      idealStates.add(idealState);
    }
    // ADD A LIVE INSTANCE WITH A CURRENT STATE THAT CONTAINS RESOURCE WHICH NO
    // LONGER EXISTS IN IDEALSTATE
    String instanceName = "localhost_" + 3;
    LiveInstance liveInstance = new LiveInstance(instanceName);
    String sessionId = UUID.randomUUID().toString();
    liveInstance.setSessionId(sessionId);
    
    HelixDataAccessor accessor = manager.getHelixDataAccessor();
    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.liveInstance(instanceName),
                                          liveInstance);

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Related Classes of com.linkedin.helix.model.LiveInstance

com.linkedin.helix.controller.GenericHelixController

com.linkedin.helix.controller.stages.BaseStageTest

com.linkedin.helix.controller.stages.ClusterDataCache

com.linkedin.helix.controller.stages.TestCompatibilityCheckStage

com.linkedin.helix.controller.stages.TestMsgSelectionStage

com.linkedin.helix.controller.stages.TestResourceComputationStage

com.linkedin.helix.integration.TestDistributedClusterController

com.linkedin.helix.integration.TestDistributedCMMain

com.linkedin.helix.integration.TestHelixCustomCodeRunner

com.linkedin.helix.integration.TestResetPartitionState

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