Package com.linkedin.helix.manager.zk

Examples of com.linkedin.helix.manager.zk.ZKHelixDataAccessor

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  public void swapInstance(String clusterName,
                           String oldInstanceName,
                           String newInstanceName)
  {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    InstanceConfig oldConfig =
        accessor.getProperty(keyBuilder.instanceConfig(oldInstanceName));
    if (oldConfig == null)
    {
      String error = "Old instance " + oldInstanceName + " does not exist, cannot swap";
      _logger.warn(error);
      throw new HelixException(error);
    }

    InstanceConfig newConfig =
        accessor.getProperty(keyBuilder.instanceConfig(newInstanceName));
    if (newConfig == null)
    {
      String error = "New instance " + newInstanceName + " does not exist, cannot swap";
      _logger.warn(error);
      throw new HelixException(error);
    }

    // ensure old instance is disabled, otherwise fail
    if (oldConfig.getInstanceEnabled())
    {
      String error =
          "Old instance " + oldInstanceName
              + " is enabled, it need to be disabled and turned off";
      _logger.warn(error);
      throw new HelixException(error);
    }
    // ensure old instance is down, otherwise fail
    List<String> liveInstanceNames =
        accessor.getChildNames(accessor.keyBuilder().liveInstances());

    if (liveInstanceNames.contains(oldInstanceName))
    {
      String error =
          "Old instance " + oldInstanceName
              + " is still on, it need to be disabled and turned off";
      _logger.warn(error);
      throw new HelixException(error);
    }

    dropInstanceFromCluster(clusterName, oldInstanceName);

    List<IdealState> existingIdealStates =
        accessor.getChildValues(accessor.keyBuilder().idealStates());
    for (IdealState idealState : existingIdealStates)
    {
      swapInstanceInIdealState(idealState, oldInstanceName, newInstanceName);
      accessor.setProperty(accessor.keyBuilder()
                                   .idealStates(idealState.getResourceName()), idealState);
    }
  }
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                                                                                          clusterName));
    Assert.assertTrue(result);

    // drop alert soon after adding, but leave enough time for alert to fire once
    // Thread.sleep(3000);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    new HealthStatsAggregationTask(cmResult._manager).run();
    String instance = "localhost_12918";
    ZNRecord record = accessor.getProperty(keyBuilder.alertStatus()).getRecord();
    Map<String, Map<String, String>> recMap = record.getMapFields();
    Set<String> keySet = recMap.keySet();
    Assert.assertTrue(keySet.size() > 0);

    _setupTool.getClusterManagementTool().dropAlert(clusterName, _alertStr);
    new HealthStatsAggregationTask(cmResult._manager).run();
    // other verifications go here
    // for (int i = 0; i < 1; i++) //change 1 back to 5
    // {
    // String instance = "localhost_" + (12918 + i);
    record = accessor.getProperty(keyBuilder.alertStatus()).getRecord();
    recMap = record.getMapFields();
    keySet = recMap.keySet();
    Assert.assertEquals(keySet.size(), 0);
    // }
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    startAndVerify(clusterName);
   
    // rename partition name TestDB0_0 tp TestDB0_100
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
   
    List<String> prioList = idealState.getRecord().getListFields().remove("TestDB0_0");
    idealState.getRecord().getListFields().put("TestDB0_100", prioList);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);

    boolean result = ClusterStateVerifier.verifyByPolling(
        new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
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    IdealState idealState = new IdealState(destIS);
    idealState.setIdealStateMode("CUSTOMIZED");
    idealState.setReplicas("3");
    idealState.setStateModelDefRef("MasterSlave");
   
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();

    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);

    startAndVerify(clusterName);
   
    Map<String, String> stateMap = idealState.getRecord().getMapFields().remove("TestDB0_0");
    idealState.getRecord().getMapFields().put("TestDB0_100", stateMap);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);

    boolean result = ClusterStateVerifier.verifyByPolling(
        new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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                            3, // replicas
                            "MasterSlave",
                            true); // do rebalance
   
    ZkBaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    // String idealStatePath = PropertyPathConfig.getPath(PropertyType.IDEALSTATES, clusterName, "TestDB0");
    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
    idealState.setBucketSize(1);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);

    TestHelper.startController(clusterName,
                               "controller_0",
                               ZK_ADDR,
                               HelixControllerMain.STANDALONE);
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  // @Test
  public void testParticipantStatusUpdates() throws Exception
  {
    ZkClient zkClient = new ZkClient(ZkIntegrationTestBase.ZK_ADDR);
    zkClient.setZkSerializer(new ZNRecordSerializer());
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    List<ExternalView> extViews = accessor.getChildValues(keyBuilder.externalViews());
    Assert.assertNotNull(extViews);

    for (ExternalView extView : extViews)
    {
      String resourceName = extView.getResourceName();
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    String clusterName = "CLUSTER_" + _className + "_basic";
    System.out.println("START " + clusterName + " at "
        + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);

    // ideal state: node0 is MASTER, node1 is SLAVE
    // replica=2 means 1 master and 1 slave
    setupIdealState(clusterName, new int[] { 0, 1 }, new String[] { "TestDB" }, 1, 2);
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    String clusterName = "CLUSTER_" + _className + "_constraints";
    System.out.println("START " + clusterName + " at "
        + new Date(System.currentTimeMillis()));

    HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(_gZkClient));
    HelixManager manager = new DummyClusterManager(clusterName, accessor);

    // ideal state: node0 is MASTER, node1 is SLAVE
    // replica=2 means 1 master and 1 slave
    setupIdealState(clusterName, new int[] { 0, 1 }, new String[] { "TestDB" }, 1, 2);
    setupLiveInstances(clusterName, new int[] { 0, 1 });
    setupStateModel(clusterName);

    // setup constraints
    ZNRecord record = new ZNRecord(ConstraintType.MESSAGE_CONSTRAINT.toString());

    // constraint0:
    // "MESSAGE_TYPE=STATE_TRANSITION,CONSTRAINT_VALUE=ANY"
    record.setMapField("constraint0", new TreeMap<String, String>());
    record.getMapField("constraint0").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint0").put("CONSTRAINT_VALUE", "ANY");
    ConstraintItem constraint0 = new ConstraintItem(record.getMapField("constraint0"));

    // constraint1:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,CONSTRAINT_VALUE=ANY"
    record.setMapField("constraint1", new TreeMap<String, String>());
    record.getMapField("constraint1").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint1").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint1").put("CONSTRAINT_VALUE", "50");
    ConstraintItem constraint1 = new ConstraintItem(record.getMapField("constraint1"));

    // constraint2:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=.*,RESOURCE=TestDB,CONSTRAINT_VALUE=2";
    record.setMapField("constraint2", new TreeMap<String, String>());
    record.getMapField("constraint2").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint2").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint2").put("INSTANCE", ".*");
    record.getMapField("constraint2").put("RESOURCE", "TestDB");
    record.getMapField("constraint2").put("CONSTRAINT_VALUE", "2");
    ConstraintItem constraint2 = new ConstraintItem(record.getMapField("constraint2"));

    // constraint3:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=localhost_12918,RESOURCE=.*,CONSTRAINT_VALUE=1";
    record.setMapField("constraint3", new TreeMap<String, String>());
    record.getMapField("constraint3").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint3").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint3").put("INSTANCE", "localhost_1");
    record.getMapField("constraint3").put("RESOURCE", ".*");
    record.getMapField("constraint3").put("CONSTRAINT_VALUE", "1");
    ConstraintItem constraint3 = new ConstraintItem(record.getMapField("constraint3"));

    // constraint4:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=.*,RESOURCE=.*,CONSTRAINT_VALUE=10"
    record.setMapField("constraint4", new TreeMap<String, String>());
    record.getMapField("constraint4").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint4").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint4").put("INSTANCE", ".*");
    record.getMapField("constraint4").put("RESOURCE", ".*");
    record.getMapField("constraint4").put("CONSTRAINT_VALUE", "10");
    ConstraintItem constraint4 = new ConstraintItem(record.getMapField("constraint4"));

    // constraint5:
    // "MESSAGE_TYPE=STATE_TRANSITION,TRANSITION=OFFLINE-SLAVE,INSTANCE=localhost_12918,RESOURCE=TestDB,CONSTRAINT_VALUE=5"
    record.setMapField("constraint5", new TreeMap<String, String>());
    record.getMapField("constraint5").put("MESSAGE_TYPE", "STATE_TRANSITION");
    record.getMapField("constraint5").put("TRANSITION", "OFFLINE-SLAVE");
    record.getMapField("constraint5").put("INSTANCE", "localhost_0");
    record.getMapField("constraint5").put("RESOURCE", "TestDB");
    record.getMapField("constraint5").put("CONSTRAINT_VALUE", "3");
    ConstraintItem constraint5 = new ConstraintItem(record.getMapField("constraint5"));

    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()),
                         new ClusterConstraints(record));

    // ClusterConstraints constraint =
    // accessor.getProperty(ClusterConstraints.class,
    // PropertyType.CONFIGS,
    // ConfigScopeProperty.CONSTRAINT.toString(),
    // ConstraintType.MESSAGE_CONSTRAINT.toString());
    ClusterConstraints constraint =
        accessor.getProperty(keyBuilder.constraint(ConstraintType.MESSAGE_CONSTRAINT.toString()));

    MessageThrottleStage throttleStage = new MessageThrottleStage();

    // test constraintSelection
    // message1: hit contraintSelection rule1 and rule2
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    return className.substring(className.lastIndexOf('.') + 1);
  }

  protected String getCurrentLeader(ZkClient zkClient, String clusterName)
  {
    ZKHelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();

    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    if (leader == null)
    {
      return null;
    }
    return leader.getInstanceName();
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  {
    Builder keyBuilder = new PropertyKey.Builder(clusterName);
    ZkClient zkClient =
        (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);

    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");
      String time = formatter.format(new Date());
      Map<String, String> contentMap = new TreeMap<String, String>();
      contentMap.put("AdditionalInfo", "No leader exists");
      record.setMapField(Level.HELIX_INFO + "-" + time, contentMap);
    }
   
    boolean paused = (accessor.getProperty(keyBuilder.pause()) == null? false : true);
    record.setSimpleField(PropertyType.PAUSE.toString(), "" + paused);

    String retVal = ClusterRepresentationUtil.ZNRecordToJson(record);
    StringRepresentation representation =
        new StringRepresentation(retVal, MediaType.APPLICATION_JSON);
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Related Classes of com.linkedin.helix.manager.zk.ZKHelixDataAccessor

  • com.linkedin.helix.controller.restlet.ZkPropertyTransferClient
  • com.linkedin.helix.controller.restlet.ZNRecordUpdate
  • com.linkedin.helix.controller.stages.TestMessageThrottleStage
  • com.linkedin.helix.controller.stages.TestRebalancePipeline
  • com.linkedin.helix.healthcheck.TestAddDropAlert
  • com.linkedin.helix.healthcheck.TestDummyAlerts
  • com.linkedin.helix.healthcheck.TestExpandAlert
  • com.linkedin.helix.healthcheck.TestSimpleAlert
  • com.linkedin.helix.healthcheck.TestSimpleWildcardAlert
  • com.linkedin.helix.healthcheck.TestStalenessAlert
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