Package com.linkedin.helix.manager.zk

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

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    return presentation;
  }

  StringRepresentation getInstanceCurrentStatesRepresentation(String clusterName, String instanceName) throws JsonGenerationException, JsonMappingException, IOException
  {
    ZkClient zkClient = (ZkClient)getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);;
    String instanceSessionId = ClusterRepresentationUtil.getInstanceSessionId(zkClient, clusterName, instanceName);
   
    String message = ClusterRepresentationUtil.getInstancePropertyNameListAsString(zkClient, clusterName, instanceName, PropertyType.CURRENTSTATES, instanceSessionId, MediaType.APPLICATION_JSON);

    StringRepresentation representation = new StringRepresentation(message, MediaType.APPLICATION_JSON);
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    return _typeClazz;
  }

  public static void main(String[] args)
  {
    ZkClient zkClient = new ZkClient("localhost:2181");
    zkClient.waitUntilConnected(10, TimeUnit.SECONDS);
    BaseDataAccessor baseDataAccessor = new ZkBaseDataAccessor(zkClient);
    HelixDataAccessor accessor =
        new ZKHelixDataAccessor("test-cluster", baseDataAccessor);
    Builder builder = new PropertyKey.Builder("test-cluster");
    HelixProperty value = new IdealState("test-resource");
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                                                     String resourceName) throws JsonGenerationException,
      JsonMappingException,
      IOException
  {
    Builder keyBuilder = new PropertyKey.Builder(clusterName);
    ZkClient zkClient = (ZkClient)getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);;
   
    String message =
        ClusterRepresentationUtil.getClusterPropertyAsString(zkClient,
                                                             clusterName,
                                                             keyBuilder.externalView(resourceName),
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  public static boolean verifyEmptyCurStateAndExtView(String clusterName,
                                                      String resourceName,
                                                      Set<String> instanceNames,
                                                      String zkAddr)
  {
    ZkClient zkClient = new ZkClient(zkAddr);
    zkClient.setZkSerializer(new ZNRecordSerializer());

    try
    {
      ZKHelixDataAccessor accessor =
          new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(zkClient));
      Builder keyBuilder = accessor.keyBuilder();

      for (String instanceName : instanceNames)
      {
        List<String> sessionIds =
            accessor.getChildNames(keyBuilder.sessions(instanceName));

        for (String sessionId : sessionIds)
        {
          CurrentState curState =
              accessor.getProperty(keyBuilder.currentState(instanceName,
                                                           sessionId,
                                                           resourceName));

          if (curState != null && curState.getRecord().getMapFields().size() != 0)
          {
            return false;
          }
        }

        ExternalView extView =
            accessor.getProperty(keyBuilder.externalView(resourceName));

        if (extView != null && extView.getRecord().getMapFields().size() != 0)
        {
          return false;
        }

      }

      return true;
    }
    finally
    {
      zkClient.close();
    }
  }
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                                  int replica,
                                  String stateModelDef,
                                  IdealStateModeProperty mode,
                                  boolean doRebalance) throws Exception
  {
    ZkClient zkClient = new ZkClient(ZkAddr);
    if (zkClient.exists("/" + clusterName))
    {
      LOG.warn("Cluster already exists:" + clusterName + ". Deleting it");
      zkClient.deleteRecursive("/" + clusterName);
    }

    ClusterSetup setupTool = new ClusterSetup(ZkAddr);
    setupTool.addCluster(clusterName, true);

    for (int i = 0; i < nodesNb; i++)
    {
      int port = startPort + i;
      setupTool.addInstanceToCluster(clusterName, participantNamePrefix + ":" + port);
    }

    for (int i = 0; i < resourceNb; i++)
    {
      String dbName = resourceNamePrefix + i;
      setupTool.addResourceToCluster(clusterName, dbName, partitionNb, stateModelDef, mode.toString());
      if (doRebalance)
      {
        setupTool.rebalanceStorageCluster(clusterName, dbName, replica);
      }
    }
    zkClient.close();
  }
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  public static void verifyState(String clusterName,
                                 String zkAddr,
                                 Map<String, Set<String>> stateMap,
                                 String state)
  {
    ZkClient zkClient = new ZkClient(zkAddr);
    zkClient.setZkSerializer(new ZNRecordSerializer());

    try
    {
      ZKHelixDataAccessor accessor =
          new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(zkClient));
      Builder keyBuilder = accessor.keyBuilder();

      for (String resGroupPartitionKey : stateMap.keySet())
      {
        Map<String, String> retMap = getResourceAndPartitionKey(resGroupPartitionKey);
        String resGroup = retMap.get("RESOURCE");
        String partitionKey = retMap.get("PARTITION");

        ExternalView extView = accessor.getProperty(keyBuilder.externalView(resGroup));
        for (String instance : stateMap.get(resGroupPartitionKey))
        {
          String actualState = extView.getStateMap(partitionKey).get(instance);
          Assert.assertNotNull(actualState, "externalView doesn't contain state for "
              + resGroup + "/" + partitionKey + " on " + instance + " (expect " + state
              + ")");

          Assert.assertEquals(actualState, state, "externalView for " + resGroup + "/"
              + partitionKey + " on " + instance + " is " + actualState + " (expect "
              + state + ")");
        }
      }
    }
    finally
    {
      zkClient.close();
    }
  }
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                                                             String instanceName,
                                                             String resourceGroup) throws JsonGenerationException,
      JsonMappingException,
      IOException
  {
    ZkClient zkClient = (ZkClient)getRequest().getAttributes().get(RestAdminApplication.ZKCLIENT);
    String instanceSessionId =
        ClusterRepresentationUtil.getInstanceSessionId(zkClient,
                                                       clusterName,
                                                       instanceName);
    Builder keyBuilder = new PropertyKey.Builder(clusterName);
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  StringRepresentation getClustersRepresentation() throws JsonGenerationException,
      JsonMappingException,
      IOException
  {
    ZkClient zkClient =
        (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
    ClusterSetup setupTool = new ClusterSetup(zkClient);
    List<String> clusters = setupTool.getClusterManagementTool().getClusters();

    ZNRecord clustersRecord = new ZNRecord("Clusters Summary");
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      }
      else if (command.equalsIgnoreCase(ClusterSetup.addCluster))
      {
        jsonParameters.verifyCommand(ClusterSetup.addCluster);

        ZkClient zkClient =
            (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
        ClusterSetup setupTool = new ClusterSetup(zkClient);
        setupTool.addCluster(jsonParameters.getParameter(JsonParameters.CLUSTER_NAME),
                             false);
      }
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    final String zkAddr = args[0];
    final String clusterName = SetupConsumerCluster.DEFAULT_CLUSTER_NAME;
    final String consumerId = args[1];
    final String mqServer = args[2];

    ZkClient zkclient = null;
    try
    {
      // add node to cluster if not already added
      zkclient =
          new ZkClient(zkAddr,
                       ZkClient.DEFAULT_SESSION_TIMEOUT,
                       ZkClient.DEFAULT_CONNECTION_TIMEOUT,
                       new ZNRecordSerializer());
      ZKHelixAdmin admin = new ZKHelixAdmin(zkclient);

      List<String> nodes = admin.getInstancesInCluster(clusterName);
      if (!nodes.contains("consumer_" + consumerId))
      {
        InstanceConfig config = new InstanceConfig("consumer_" + consumerId);
        config.setHostName("localhost");
        config.setInstanceEnabled(true);
        admin.addInstance(clusterName, config);
      }

      // start consumer
      final Consumer consumer =
          new Consumer(zkAddr, clusterName, "consumer_" + consumerId, mqServer);

      Runtime.getRuntime().addShutdownHook(new Thread()
      {
        @Override
        public void run()
        {
          System.out.println("Shutting down consumer_" + consumerId);
          consumer.disconnect();
        }
      });

      consumer.connect();
    }
    finally
    {
      if (zkclient != null)
      {
        zkclient.close();
      }
    }
  }
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Related Classes of com.linkedin.helix.manager.zk.ZkClient

  • com.linkedin.helix.controller.restlet.ZKPropertyTransferServer
  • com.linkedin.helix.controller.TestControllerRebalancingTimer
  • com.linkedin.helix.controller.TestControllerRebalancingTimerPeriod
  • com.linkedin.helix.examples.IdealStateExample
  • com.linkedin.helix.healthcheck.TestAddDropAlert
  • com.linkedin.helix.healthcheck.TestExpandAlert
  • com.linkedin.helix.healthcheck.TestSimpleAlert
  • com.linkedin.helix.healthcheck.TestSimpleWildcardAlert
  • com.linkedin.helix.healthcheck.TestStalenessAlert
  • com.linkedin.helix.healthcheck.TestWildcardAlert
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