Package com.linkedin.helix

Examples of com.linkedin.helix.HelixDataAccessor

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          .calculateIdealState(instances, partitions, replicas,
              resourceName, "MASTER", "SLAVE");
      IdealState idealState = new IdealState(record);
      idealState.setStateModelDefRef("MasterSlave");
     
      HelixDataAccessor accessor = manager.getHelixDataAccessor();
      Builder keyBuilder = accessor.keyBuilder();
      accessor.setProperty(keyBuilder.idealStates(resourceName),
                                            idealState);


      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);

    String oldResource = "testResourceOld";
    CurrentState currentState = new CurrentState(oldResource);
    currentState.setState("testResourceOld_0", "OFFLINE");
    currentState.setState("testResourceOld_1", "SLAVE");
    currentState.setState("testResourceOld_2", "MASTER");
    currentState.setStateModelDefRef("MasterSlave");
    accessor.setProperty(keyBuilder.currentState(instanceName, sessionId, oldResource),
                                          currentState);

    ResourceComputationStage stage = new ResourceComputationStage();
    runStage(event, new ReadClusterDataStage());
    runStage(event, stage);
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  @Test
  public void TestSwap() throws Exception
  {
    String controllerName = CONTROLLER_PREFIX + "_0";
    HelixManager manager = _startCMResultMap.get(controllerName)._manager;
    HelixDataAccessor helixAccessor = manager.getHelixDataAccessor();
    _setupTool.addResourceToCluster(CLUSTER_NAME, "MyDB", 64, STATE_MODEL);
    _setupTool.rebalanceStorageCluster(CLUSTER_NAME, "MyDB", _replica);
   
   
    ZNRecord idealStateOld1 = new ZNRecord("TestDB");
    ZNRecord idealStateOld2 = new ZNRecord("MyDB");
   
    IdealState is1 = helixAccessor.getProperty(helixAccessor.keyBuilder().idealStates("TestDB"));
    idealStateOld1.merge(is1.getRecord());
   

    IdealState is2 = helixAccessor.getProperty(helixAccessor.keyBuilder().idealStates("MyDB"));
    idealStateOld2.merge(is2.getRecord());
   
    String instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + 0);
    ZKHelixAdmin tool = new ZKHelixAdmin(_zkClient);
    _setupTool.getClusterManagementTool().enableInstance(CLUSTER_NAME, instanceName, false);

    boolean result = ClusterStateVerifier.verifyByPolling(
        new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, CLUSTER_NAME));
    Assert.assertTrue(result);
   
    String instanceName2 = PARTICIPANT_PREFIX + "_" + (START_PORT + 444);
    _setupTool.addInstanceToCluster(CLUSTER_NAME, instanceName2);
   
    boolean exception = false;
    try
    {
      _setupTool.swapInstance(CLUSTER_NAME, instanceName, instanceName2);
    }
    catch(Exception e)
    {
      exception = true;
    }
    Assert.assertTrue(exception);
   
    _startCMResultMap.get(instanceName)._manager.disconnect();
    _startCMResultMap.get(instanceName)._thread.interrupt();
    Thread.sleep(1000);
   
    exception = false;
    try
    {
      _setupTool.swapInstance(CLUSTER_NAME, instanceName, instanceName2);
    }
    catch(Exception e)
    {
      e.printStackTrace();
      exception = true;
    }
    Assert.assertFalse(exception);
    StartCMResult result2 =
        TestHelper.startDummyProcess(ZK_ADDR, CLUSTER_NAME, instanceName2);
    _startCMResultMap.put(instanceName2, result2);
   
    result = ClusterStateVerifier.verifyByPolling(
        new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, CLUSTER_NAME));
    Assert.assertTrue(result);
   
    is1 = helixAccessor.getProperty(helixAccessor.keyBuilder().idealStates("TestDB"));
   
    is2 = helixAccessor.getProperty(helixAccessor.keyBuilder().idealStates("MyDB"));
   
    for(String key : idealStateOld1.getMapFields().keySet())
    {
      for(String host : idealStateOld1.getMapField(key).keySet())
      {
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    @Override
    public void doTransition(Message message, NotificationContext context)
    {
      HelixManager manager = context.getManager();
      HelixDataAccessor accessor = manager.getHelixDataAccessor();
      Builder keyBuilder = accessor.keyBuilder();
     
      String instance = message.getTgtName();
      if (_done.getAndSet(true) == false)
      {
        for (int i = 0; i < 5; i++)
        {
//          System.out.println(instance + " sets healthReport: " + "mockAlerts" + i);
          accessor.setProperty(keyBuilder.healthReport(instance, "mockAlerts"),
                               new HealthStat(new ZNRecord("mockAlerts" + i)));
        }
      }
    }
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    }
    @Override
    public void doTransition(Message message, NotificationContext context)
    {
      HelixManager manager = context.getManager();
      HelixDataAccessor accessor = manager.getHelixDataAccessor();
      String fromState = message.getFromState();
      String toState = message.getToState();
      String instance = message.getTgtName();
      String partition = message.getPartitionName();
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    for (int i = 0; i < NODE_NR; i++)
    {
      String instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + i);
      if (_startCMResultMap.get(instanceName) != null)
      {
        HelixDataAccessor accessor = _startCMResultMap.get(instanceName)._manager.getHelixDataAccessor();
        Builder kb = accessor.keyBuilder();
        List<StatusUpdate> statusUpdates = accessor.getChildValues(
            kb.stateTransitionStatus(instanceName, _startCMResultMap.get(instanceName)._manager.getSessionId(),
                TEST_DB));
        Assert.assertTrue(statusUpdates.size() > 0);
        for(StatusUpdate update : statusUpdates)
        {
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    }
    @Override
    public void doTransition(Message message, NotificationContext context)
    {
      HelixManager manager = context.getManager();
      HelixDataAccessor accessor = manager.getHelixDataAccessor();
      String fromState = message.getFromState();
      String toState = message.getToState();
      String instance = message.getTgtName();
      String partition = message.getPartitionName();
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    Map<String, String> statFields = getStatFields("0", "0");
    _statsHolder.applyStat(incomingStatName, statFields);
    _statsHolder.persistStats();

    // check persistent stats
    HelixDataAccessor accessor = _helixManager.getHelixDataAccessor();
    Builder keyBuilder = accessor.keyBuilder();

    ZNRecord rec = accessor.getProperty(keyBuilder.persistantStat()).getRecord();

    System.out.println("rec: " + rec.toString());
    AssertJUnit.assertTrue(statRecordHasValue(rec, persistentStat, "0.0"));
    AssertJUnit.assertTrue(statRecordHasTimestamp(rec, persistentStat, "0.0"));
  }
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    statFields = getStatFields("1", "10");
    _statsHolder.applyStat(incomingStatName, statFields);
    _statsHolder.persistStats();

    // check persistent stats
    HelixDataAccessor accessor = _helixManager.getHelixDataAccessor();
    Builder keyBuilder = accessor.keyBuilder();

    ZNRecord rec = accessor.getProperty(keyBuilder.persistantStat()).getRecord();

    System.out.println("rec: " + rec.toString());
    AssertJUnit.assertTrue(statRecordHasValue(rec, persistentStat, "1.0"));
    AssertJUnit.assertTrue(statRecordHasTimestamp(rec, persistentStat, "10.0"));
  }
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    statFields = getStatFields("1", "10");
    _statsHolder.applyStat(incomingStatName, statFields);
    _statsHolder.persistStats();

    // check persistent stats
    HelixDataAccessor accessor = _helixManager.getHelixDataAccessor();
    Builder keyBuilder = accessor.keyBuilder();

    ZNRecord rec = accessor.getProperty(keyBuilder.persistantStat()).getRecord();

    System.out.println("rec: " + rec.toString());
    AssertJUnit.assertTrue(statRecordHasValue(rec, persistentStat, "6.0"));
    AssertJUnit.assertTrue(statRecordHasTimestamp(rec, persistentStat, "15.0"));
  }
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    Assert.assertTrue(result);

    // pause the cluster and make sure pause is persistent
    ZkClient zkClient = new ZkClient(ZK_ADDR);
    zkClient.setZkSerializer(new ZNRecordSerializer());
    final HelixDataAccessor tmpAccessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
   
    String cmd = "-zkSvr " + ZK_ADDR + " -enableCluster " + clusterName + " false";
    ClusterSetup.processCommandLineArgs(cmd.split(" "));
   
    tmpAccessor.setProperty(tmpAccessor.keyBuilder().pause(), new PauseSignal("pause"));
    zkClient.close();
   
    // wait for controller to be signaled by pause
    Thread.sleep(1000);

    // add a new resource group
    ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
    setupTool.addResourceToCluster(clusterName, "TestDB1", 10, "MasterSlave");
    setupTool.rebalanceStorageCluster(clusterName, "TestDB1", 3);

    // make sure TestDB1 external view is empty
    TestHelper.verifyWithTimeout("verifyEmptyCurStateAndExtView",
                                 1000,
                                 clusterName,
                                 "TestDB1",
                                 TestHelper.<String> setOf("localhost_12918",
                                                           "localhost_12919",
                                                           "localhost_12920",
                                                           "localhost_12921",
                                                           "localhost_12922"),
                                 ZK_ADDR);

    // resume controller
    final HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));

    cmd = "-zkSvr " + ZK_ADDR + " -enableCluster " + clusterName + " true";
    ClusterSetup.processCommandLineArgs(cmd.split(" "));
    result =
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Related Classes of com.linkedin.helix.HelixDataAccessor

  • com.linkedin.helix.alerts.TestAddAlerts
  • com.linkedin.helix.alerts.TestAddPersistentStats
  • com.linkedin.helix.alerts.TestArrivingParticipantStats
  • com.linkedin.helix.controller.GenericHelixController
  • com.linkedin.helix.controller.stages.ExternalViewComputeStage
  • com.linkedin.helix.controller.stages.ReadClusterDataStage
  • com.linkedin.helix.controller.stages.ReadHealthDataStage
  • com.linkedin.helix.controller.stages.StatsAggregationStage
  • com.linkedin.helix.controller.stages.TaskAssignmentStage
  • com.linkedin.helix.controller.stages.TestMessageThrottleStage
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