Package org.apache.helix

Examples of org.apache.helix.ConfigAccessor

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    ExternalView externalView =
        manager.getHelixDataAccessor().getProperty(kb.externalView("TestDB"));
    // Test the DISABLE_INSTANCE alerts
    String participant1 = "localhost_" + (START_PORT + 3);
    String participant2 = "localhost_" + (START_PORT + 2);
    ConfigAccessor configAccessor = manager.getConfigAccessor();
    // scope = new
    // ConfigScopeBuilder().forCluster(manager.getClusterName()).forParticipant(participant1).build();
    scope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
            .forCluster(manager.getClusterName()).forParticipant(participant1).build();
    String isEnabled = configAccessor.get(scope, "HELIX_ENABLED");
    Assert.assertFalse(Boolean.parseBoolean(isEnabled));

    // scope = new
    // ConfigScopeBuilder().forCluster(manager.getClusterName()).forParticipant(participant2).build();
    scope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
            .forCluster(manager.getClusterName()).forParticipant(participant2).build();
    isEnabled = configAccessor.get(scope, "HELIX_ENABLED");
    Assert.assertFalse(Boolean.parseBoolean(isEnabled));

    for (String partitionName : externalView.getRecord().getMapFields().keySet()) {
      for (String hostName : externalView.getRecord().getMapField(partitionName).keySet()) {
        if (hostName.equals(participant1) || hostName.equals(participant2)) {
          Assert.assertEquals(externalView.getRecord().getMapField(partitionName).get(hostName),
              "OFFLINE");
        }
      }
    }

    // enable the disabled instances
    setHealthData(metrics3, metrics3);
    task.aggregate();
    Thread.sleep(1000);

    manager.getClusterManagmentTool().enableInstance(manager.getClusterName(), participant2, true);
    manager.getClusterManagmentTool().enableInstance(manager.getClusterName(), participant1, true);

    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
            CLUSTER_NAME));
    Assert.assertTrue(result);

    // Test the DISABLE_PARTITION case
    int[] metrics4 = {
        22, 115, 22, 16, 163
    };
    setHealthData2(metrics4);
    task.aggregate();

    // scope = new
    // ConfigScopeBuilder().forCluster(manager.getClusterName()).forParticipant(participant1).build();
    scope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
            .forCluster(manager.getClusterName()).forParticipant(participant1).build();
    isEnabled = configAccessor.get(scope, "HELIX_ENABLED");
    Assert.assertTrue(Boolean.parseBoolean(isEnabled));

    // scope = new
    // ConfigScopeBuilder().forCluster(manager.getClusterName()).forParticipant(participant2).build();
    scope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
            .forCluster(manager.getClusterName()).forParticipant(participant2).build();
    isEnabled = configAccessor.get(scope, "HELIX_ENABLED");
    Assert.assertTrue(Boolean.parseBoolean(isEnabled));

    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
            CLUSTER_NAME));
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        new ZkClient(_zkAddress, _sessionTimeout, ZkClient.DEFAULT_CONNECTION_TIMEOUT, zkSerializer);

    _baseDataAccessor = createBaseDataAccessor();

    _dataAccessor = new ZKHelixDataAccessor(_clusterName, _instanceType, _baseDataAccessor);
    _configAccessor = new ConfigAccessor(_zkclient);

    int retryCount = 0;

    _zkclient.subscribeStateChanges(this);
    while (retryCount < 3) {
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          new ZkClient(_zkAddr, ZkClient.DEFAULT_SESSION_TIMEOUT,
              ZkClient.DEFAULT_CONNECTION_TIMEOUT, new ZNRecordSerializer());
      // waitUntilConnected();

      _baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_zkclient);
      _configAccessor = new ConfigAccessor(_zkclient);

      _zkclient.subscribeStateChanges(this);
      handleNewSession();

      isStarted = true;
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  private static Logger logger = Logger.getLogger(ZKHelixAdmin.class);

  public ZKHelixAdmin(ZkClient zkClient) {
    _zkClient = zkClient;
    _configAccessor = new ConfigAccessor(zkClient);
  }
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  public ZKHelixAdmin(String zkAddress) {
    int timeOutInSec = Integer.parseInt(System.getProperty(CONNECTION_TIMEOUT, "30"));
    _zkClient = new ZkClient(zkAddress, timeOutInSec * 1000);
    _zkClient.setZkSerializer(new ZNRecordSerializer());
    _zkClient.waitUntilConnected(timeOutInSec, TimeUnit.SECONDS);
    _configAccessor = new ConfigAccessor(_zkClient);
  }
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  @Transition(to = "ONLINE", from = "OFFLINE")
  public void onBecomeOnlineFromOffline(Message message, NotificationContext context)
      throws Exception {
    LOG.debug(_workerId + " becomes ONLINE from OFFLINE for " + _partition);
    ConfigAccessor clusterConfig = context.getManager().getConfigAccessor();
    HelixManager manager = context.getManager();
    HelixConfigScope clusterScope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.CLUSTER).forCluster(
            manager.getClusterName()).build();
    String json = clusterConfig.get(clusterScope, message.getResourceName());
    Dag.Node node = Dag.Node.fromJson(json);
    Set<String> parentIds = node.getParentIds();
    String resourceName = message.getResourceName();
    int numPartitions = node.getNumPartitions();
    Task task = _taskFactory.createTask(resourceName, parentIds, manager, _taskResultStore);
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    Dag dag = Dag.fromJson(dagJson);
    submitDag(dag);
  }

  public void submitDag(Dag dag) throws Exception {
    ConfigAccessor clusterConfig = new ConfigAccessor(_zkclient);
    HelixConfigScope clusterScope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.CLUSTER).forCluster(_clusterName).build();
    for (String id : dag.getNodeIds()) {
      Dag.Node node = dag.getNode(id);
      clusterConfig.set(clusterScope, node.getId(), node.toJson());
      _admin.addResource(_clusterName, node.getId(), node.getNumPartitions(), DEFAULT_STATE_MODEL,
          RebalanceMode.FULL_AUTO.toString());

    }
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    return leader.getInstanceName();
  }

  protected void enableHealthCheck(String clusterName) {
    ConfigScope scope = new ConfigScopeBuilder().forCluster(clusterName).build();
    new ConfigAccessor(_gZkClient).set(scope, "healthChange" + ".enabled", "" + true);
  }
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        new ZkClient(_zkAddress, _sessionTimeout, ZkClient.DEFAULT_CONNECTION_TIMEOUT, zkSerializer);

    _baseDataAccessor = createBaseDataAccessor();

    _dataAccessor = new ZKHelixDataAccessor(_clusterName, _instanceType, _baseDataAccessor);
    _configAccessor = new ConfigAccessor(_zkclient);

    int retryCount = 0;

    _zkclient.subscribeStateChanges(this);
    while (retryCount < 3) {
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    return builder.build();
  }

  private static Map<String, String> getResourceConfigMap(HelixManager manager, String resource) {
    HelixConfigScope scope = getResourceConfigScope(manager.getClusterName(), resource);
    ConfigAccessor configAccessor = manager.getConfigAccessor();

    Map<String, String> taskCfg = new HashMap<String, String>();
    List<String> cfgKeys = configAccessor.getKeys(scope);
    if (cfgKeys == null || cfgKeys.isEmpty()) {
      return null;
    }

    for (String cfgKey : cfgKeys) {
      taskCfg.put(cfgKey, configAccessor.get(scope, cfgKey));
    }

    return getResourceConfig(manager, resource).getRecord().getSimpleFields();
  }
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Related Classes of org.apache.helix.ConfigAccessor

  • org.apache.helix.agent.TestHelixAgent
  • org.apache.helix.healthcheck.HealthStatsAggregationTask
  • org.apache.helix.healthcheck.HealthStatsAggregator
  • org.apache.helix.healthcheck.TestAlertActionTriggering
  • org.apache.helix.integration.ZkIntegrationTestBase
  • org.apache.helix.manager.zk.ZKHelixAdmin
  • org.apache.helix.manager.zk.ZkHelixConnection
  • org.apache.helix.manager.zk.ZKHelixManager
  • org.apache.helix.messaging.DefaultMessagingService
  • org.apache.helix.messaging.handling.HelixTaskExecutor
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