Package org.apache.helix

Examples of org.apache.helix.ConfigAccessor

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        "MasterSlave", true); // do rebalance

    // set cluster config
    HelixConfigScope scope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.CLUSTER).forCluster(clusterName).build();
    ConfigAccessor configAccessor = new ConfigAccessor(_zkclient);

    // String pidFile = ScriptTestHelper.getPrefix() + ScriptTestHelper.INTEGRATION_LOG_DIR +
    // "/default/foo_{PARTITION_NAME}_pid.txt";

    // the pid file path for the first partition
    // delete it if exists
    // String pidFileFirstPartition = ScriptTestHelper.getPrefix() +
    // ScriptTestHelper.INTEGRATION_LOG_DIR + "/default/foo_TestDB0_0_pid.txt";
    // File file = new File(pidFileFirstPartition);
    // if (file.exists()) {
    // file.delete();
    // }

    // set commands for state-transitions
    CommandConfig.Builder builder = new CommandConfig.Builder();
    CommandConfig cmdConfig =
        builder.setTransition("SLAVE", "MASTER").setCommand("simpleHttpClient.py SLAVE-MASTER")
            .setCommandWorkingDir(workingDir).setCommandTimeout("0")
            // .setPidFile(pidFile)
            .build();
    configAccessor.set(scope, cmdConfig.toKeyValueMap());

    builder = new CommandConfig.Builder();
    cmdConfig =
        builder.setTransition("OFFLINE", "SLAVE").setCommand("simpleHttpClient.py OFFLINE-SLAVE")
            .setCommandWorkingDir(workingDir).build();
    configAccessor.set(scope, cmdConfig.toKeyValueMap());

    builder = new CommandConfig.Builder();
    cmdConfig =
        builder.setTransition("MASTER", "SLAVE").setCommand("simpleHttpClient.py MASTER-SLAVE")
            .setCommandWorkingDir(workingDir).build();
    configAccessor.set(scope, cmdConfig.toKeyValueMap());

    builder = new CommandConfig.Builder();
    cmdConfig =
        builder.setTransition("SLAVE", "OFFLINE").setCommand("simpleHttpClient.py SLAVE-OFFLINE")
            .setCommandWorkingDir(workingDir).build();
    configAccessor.set(scope, cmdConfig.toKeyValueMap());

    builder = new CommandConfig.Builder();
    cmdConfig =
        builder.setTransition("OFFLINE", "DROPPED").setCommand(CommandAttribute.NOP.getName())
            .build();
    configAccessor.set(scope, cmdConfig.toKeyValueMap());

    // start controller
    MockController controller = new MockController(zkAddr, clusterName, "controller_0");
    controller.syncStart();
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  @Test
  public void TestThreadPoolSizeConfig() {
    String instanceName = "localhost_" + (START_PORT + 0);
    HelixManager manager = _participants[0];

    ConfigAccessor accessor = manager.getConfigAccessor();
    HelixConfigScope scope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.PARTICIPANT)
            .forCluster(manager.getClusterName()).forParticipant(instanceName).build();
    accessor.set(scope, "TestMsg." + HelixTaskExecutor.MAX_THREADS, "" + 12);

    scope =
        new HelixConfigScopeBuilder(ConfigScopeProperty.CLUSTER).forCluster(
            manager.getClusterName()).build();
    accessor.set(scope, "TestMsg." + HelixTaskExecutor.MAX_THREADS, "" + 8);

    for (int i = 0; i < NODE_NR; i++) {
      instanceName = "localhost_" + (START_PORT + i);

      _participants[i].getMessagingService().registerMessageHandlerFactory("TestMsg",
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      _zkclient =
          new ZkClient(_zkAddr, ZkClient.DEFAULT_SESSION_TIMEOUT,
              ZkClient.DEFAULT_CONNECTION_TIMEOUT, new ZNRecordSerializer());

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

      _zkclient.subscribeStateChanges(this);
      handleNewSession();

      isStarted = true;
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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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  @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.getResourceId().stringify());
    Dag.Node node = Dag.Node.fromJson(json);
    Set<String> parentIds = node.getParentIds();
    ResourceId resourceId = message.getResourceId();
    int numPartitions = node.getNumPartitions();
    Task task =
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  }

  void checkResourceConfig(String resourceName, HelixManager manager) {
    if (!_resourceThreadpoolSizeMap.containsKey(resourceName)) {
      int threadpoolSize = -1;
      ConfigAccessor configAccessor = manager.getConfigAccessor();
      if (configAccessor != null) {
        ConfigScope scope =
            new ConfigScopeBuilder().forCluster(manager.getClusterName()).forResource(resourceName)
                .build();

        String threadpoolSizeStr = configAccessor.get(scope, MAX_THREADS);
        try {
          if (threadpoolSizeStr != null) {
            threadpoolSize = Integer.parseInt(threadpoolSizeStr);
          }
        } catch (Exception e) {
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public class TestResourceThreadpoolSize extends ZkStandAloneCMTestBase {
  @Test
  public void TestThreadPoolSizeConfig() {
    HelixManager manager = _participants[0];
    ConfigAccessor accessor = manager.getConfigAccessor();
    ConfigScope scope =
        new ConfigScopeBuilder().forCluster(manager.getClusterName()).forResource("NextDB").build();
    accessor.set(scope, HelixTaskExecutor.MAX_THREADS, "" + 12);

    _setupTool.addResourceToCluster(CLUSTER_NAME, "NextDB", 64, STATE_MODEL);
    _setupTool.rebalanceStorageCluster(CLUSTER_NAME, "NextDB", 3);

    boolean result =
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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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    _logger.info("registering msg factory for type " + type);
    int threadpoolSize = HelixTaskExecutor.DEFAULT_PARALLEL_TASKS;
    String threadpoolSizeStr = null;
    String key = type + "." + HelixTaskExecutor.MAX_THREADS;

    ConfigAccessor configAccessor = _manager.getConfigAccessor();
    if (configAccessor != null) {
      ConfigScope scope = null;

      // Read the participant config and cluster config for the per-message type thread pool size.
      // participant config will override the cluster config.

      if (_manager.getInstanceType() == InstanceType.PARTICIPANT
          || _manager.getInstanceType() == InstanceType.CONTROLLER_PARTICIPANT) {
        scope =
            new ConfigScopeBuilder().forCluster(_manager.getClusterName())
                .forParticipant(_manager.getInstanceName()).build();
        threadpoolSizeStr = configAccessor.get(scope, key);
      }

      if (threadpoolSizeStr == null) {
        scope = new ConfigScopeBuilder().forCluster(_manager.getClusterName()).build();
        threadpoolSizeStr = configAccessor.get(scope, key);
      }
    }

    if (threadpoolSizeStr != null) {
      try {
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  @Test
  public void TestThreadPoolSizeConfig() {
    String instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + 0);
    HelixManager manager = _participants[0];

    ConfigAccessor accessor = manager.getConfigAccessor();
    ConfigScope scope =
        new ConfigScopeBuilder().forCluster(manager.getClusterName()).forParticipant(instanceName)
            .build();
    accessor.set(scope, "TestMsg." + HelixTaskExecutor.MAX_THREADS, "" + 12);

    scope = new ConfigScopeBuilder().forCluster(manager.getClusterName()).build();
    accessor.set(scope, "TestMsg." + HelixTaskExecutor.MAX_THREADS, "" + 8);

    for (int i = 0; i < NODE_NR; i++) {
      instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + i);

      _participants[i].getMessagingService().registerMessageHandlerFactory("TestMsg",
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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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