Package org.apache.helix.model

Examples of org.apache.helix.model.LiveInstance

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    return true;
  }

  private void addLiveInstance()
  {
    LiveInstance liveInstance = new LiveInstance(_instanceName);
    liveInstance.setSessionId(_sessionId);
    liveInstance.setHelixVersion(_version);
    liveInstance.setLiveInstance(ManagementFactory.getRuntimeMXBean().getName());

    logger.info("Add live instance: InstanceName: " + _instanceName + " Session id:"
        + _sessionId);
    Builder keyBuilder = _helixAccessor.keyBuilder();
    if (!_helixAccessor.createProperty(keyBuilder.liveInstance(_instanceName),
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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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    deleteUrl(clusterUrl, true);

    // verify leader node
    HelixDataAccessor accessor =
        _startCMResultMap.get("controller_9001")._manager.getHelixDataAccessor();
    LiveInstance controllerLeader =
        accessor.getProperty(accessor.keyBuilder().controllerLeader());
    Assert.assertTrue(controllerLeader.getInstanceName().startsWith("controller_900"));

    accessor = _startCMResultMap.get("localhost_1232")._manager.getHelixDataAccessor();
    LiveInstance leader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
    for(int i = 0; i < 5; i++)
    {
      if(leader != null)
      {
        break;
      }
      Thread.sleep(1000);
      leader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
    }
    Assert.assertTrue(leader.getInstanceName().startsWith("controller_900"));

    boolean verifyResult =
        ClusterStateVerifier.verifyByZkCallback(new MasterNbInExtViewVerifier(ZK_ADDR,
                                                                              "clusterTest1"));
    Assert.assertTrue(verifyResult);
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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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    ZkClient zkClient = (ZkClient)getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
    ClusterSetup setupTool = new ClusterSetup(zkClient);
    List<String> instances = setupTool.getClusterManagementTool().getInstancesInCluster(clusterName);
   
    HelixDataAccessor accessor = ClusterRepresentationUtil.getClusterDataAccessor(zkClient, clusterName);
    LiveInstance liveInstance = accessor.getProperty(accessor.keyBuilder().liveInstance(instanceName));
    String sessionId = liveInstance.getSessionId();
   
    StringRepresentation representation = new StringRepresentation("");//(ClusterRepresentationUtil.ObjectToJson(instanceConfigs), MediaType.APPLICATION_JSON);
   
    return representation;
  }
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    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));

    ZNRecord record = null;
    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    if (leader != null)
    {
      record = leader.getRecord();
    }
    else
    {
      record = new ZNRecord("");
      DateFormat formatter = new SimpleDateFormat("yyyyMMdd-HHmmss.SSSSSS");
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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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    HelixDataAccessor accessor =
        ClusterRepresentationUtil.getClusterDataAccessor(zkClient, clusterName);
    Builder keyBuilder = accessor.keyBuilder();

    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    if (leader != null)
    {
      clusterSummayRecord.setSimpleField("LEADER", leader.getInstanceName());
    }
    else
    {
      clusterSummayRecord.setSimpleField("LEADER", "");
    }
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    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    // ensure node is stopped
    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance(instanceId));
    if (liveInstance != null)
    {
      throw new HelixException("Can't drop " + instanceId + ", please stop " + instanceId
          + " before drop it");
    }
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    private boolean tryUpdateController(HelixManager manager) {
  // 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 leaderSessionId = leader.getSessionId();
      LOG.info("Leader exists for cluster: " + manager.getClusterName() + ", currentLeader: "
        + leader.getInstanceName() + ", leaderSessionId: " + leaderSessionId);

      if (leaderSessionId != null && leaderSessionId.equals(manager.getSessionId())) {
    return true;
      }
  }
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Related Classes of org.apache.helix.model.LiveInstance

  • org.apache.helix.api.accessor.ClusterAccessor
  • org.apache.helix.api.accessor.ControllerAccessor
  • org.apache.helix.api.accessor.ParticipantAccessor
  • org.apache.helix.controller.GenericHelixController
  • org.apache.helix.controller.stages.BaseStageTest
  • org.apache.helix.controller.stages.ClusterDataCache
  • org.apache.helix.controller.stages.TaskAssignmentStage
  • org.apache.helix.controller.stages.TestCompatibilityCheckStage
  • org.apache.helix.controller.stages.TestMsgSelectionStage
  • org.apache.helix.controller.stages.TestResourceComputationStage
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