Examples of ZkClient

com.linkedin.helix.manager.zk.ZkClient
ZKClient does not provide some functionalities, this will be used for quick fixes if any bug found in ZKClient or if we need additional features but can't wait for the new ZkClient jar Ideally we should commit the changes we do here to ZKClient. @author kgopalak
org.I0Itec.zkclient.ZkClient
Abstracts the interaction with zookeeper and allows permanent (not just one time) watches on nodes in ZooKeeper
org.apache.activemq.leveldb.replicated.groups.ZKClient
org.apache.hadoop.yarn.lib.ZKClient
ZK Registration Library currently does not use any authorization
org.apache.helix.manager.zk.ZkClient
ZKClient does not provide some functionalities, this will be used for quick fixes if any bug found in ZKClient or if we need additional features but can't wait for the new ZkClient jar Ideally we should commit the changes we do here to ZKClient.
org.apache.s4.comm.topology.ZkClient
Overwriting the ZKclient since the org.I0Itec.zkclient.ZkClient does not expose some important methods
org.apache.twill.zookeeper.ZKClient
A ZooKeeper client that provides asynchronous zookeeper operations.

Examples of org.apache.helix.manager.zk.ZkClient

  public static ZkClient getZkClient(String zkServer)
  {
    // happy path that we cache the zkclient and it's still connected
    if (_zkClientMap.containsKey(zkServer))
    {
      ZkClient zkClient = _zkClientMap.get(zkServer);
      if (zkClient.getConnection().getZookeeperState() == States.CONNECTED)
      {
        return zkClient;
      }
    }


    synchronized (_zkClientMap)
    {
      // if we cache a stale zkclient, purge it
      if (_zkClientMap.containsKey(zkServer))
      {
        ZkClient zkClient = _zkClientMap.get(zkServer);
        if (zkClient.getConnection().getZookeeperState() != States.CONNECTED)
        {
          _zkClientMap.remove(zkServer);
        }
      }


      // get a new zkclient
      if (!_zkClientMap.containsKey(zkServer))
      {
        ZkClient zkClient = new ZkClient(zkServer, DEFAULT_SESSION_TIMEOUT, 
            ZkClient.DEFAULT_CONNECTION_TIMEOUT, new ZNRecordSerializer());


        _zkClientMap.put(zkServer, zkClient);
      }
      return _zkClientMap.get(zkServer);

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Examples of org.apache.helix.manager.zk.ZkClient

                                                             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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Examples of org.apache.helix.manager.zk.ZkClient


  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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Examples of org.apache.helix.manager.zk.ZkClient

  public void post(String zkServer,
                   Message message,
                   String clusterName,
                   String instanceName)
  {
    ZkClient client = new ZkClient(zkServer);
    client.setZkSerializer(new ZNRecordSerializer());
    String path = HelixUtil.getMessagePath(clusterName, instanceName) + "/" + message.getId();
    client.delete(path);
    ZNRecord record = client.readData(HelixUtil.getLiveInstancePath(clusterName, instanceName));
    message.setTgtSessionId(record.getSimpleField(LiveInstanceProperty.SESSION_ID.toString()).toString());
    message.setTgtName(record.getId());
    //System.out.println(message);
    client.createPersistent(path, message.getRecord());
  }

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Examples of org.apache.helix.manager.zk.ZkClient

      }
      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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Examples of org.apache.helix.manager.zk.ZkClient


    final String zkAddr = args[0];
    final int numNodes = Integer.parseInt(args[1]);
    final String clusterName = DEFAULT_CLUSTER_NAME;


    ZkClient zkclient = null;
    try
    {
      zkclient = new ZkClient(zkAddr, ZkClient.DEFAULT_SESSION_TIMEOUT,
          ZkClient.DEFAULT_CONNECTION_TIMEOUT, new ZNRecordSerializer());
      ZKHelixAdmin admin = new ZKHelixAdmin(zkclient);


      // add cluster
      admin.addCluster(clusterName, true);


      // add state model definition
      StateModelConfigGenerator generator = new StateModelConfigGenerator();
      admin.addStateModelDef(clusterName, DEFAULT_STATE_MODEL,
          new StateModelDefinition(generator.generateConfigForOnlineOffline()));
      // addNodes
      for (int i = 0; i < numNodes; i++)
      {
        String port = "" +(12001+ i);
        String serverId = "localhost_"+ port;
        InstanceConfig config = new InstanceConfig(serverId);
        config.setHostName("localhost");
        config.setPort(port);
        config.setInstanceEnabled(true);
        admin.addInstance(clusterName, config);
      }
      // add resource "repository" which has 1 partition
      String resourceName = DEFAULT_RESOURCE_NAME;
      admin.addResource(clusterName, resourceName, DEFAULT_PARTITION_NUMBER,
          DEFAULT_STATE_MODEL, IdealStateModeProperty.AUTO.toString());
      admin.rebalance(clusterName, resourceName, 1);


    } finally
    {
      if (zkclient != null)
      {
        zkclient.close();
      }
    }
  }

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Examples of org.apache.helix.manager.zk.ZkClient

  }
  
  StringRepresentation getStateModelsRepresentation() throws JsonGenerationException, JsonMappingException, IOException
  {
    String clusterName = (String)getRequest().getAttributes().get("clusterName");
    ZkClient zkClient = (ZkClient)getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
    ClusterSetup setupTool = new ClusterSetup(zkClient);
    
    List<String> models = setupTool.getClusterManagementTool().getStateModelDefs(clusterName);
    
    ZNRecord modelDefinitions = new ZNRecord("modelDefinitions");

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Examples of org.apache.helix.manager.zk.ZkClient

  public void acceptRepresentation(Representation entity)
  {
    try
    {
      String clusterName = (String)getRequest().getAttributes().get("clusterName");
      ZkClient zkClient = (ZkClient)getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);;
      
      JsonParameters jsonParameters = new JsonParameters(entity);
      String command = jsonParameters.getCommand();

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Examples of org.apache.helix.manager.zk.ZkClient

      IOException
  {
    String clusterName = (String) getRequest().getAttributes().get("clusterName");
    String instanceName = (String) getRequest().getAttributes().get("instanceName");
    Builder keyBuilder = new PropertyKey.Builder(clusterName);
    ZkClient zkClient =
        (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);


    String message =
        ClusterRepresentationUtil.getClusterPropertyAsString(zkClient,
                                                             clusterName,

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Examples of org.apache.helix.manager.zk.ZkClient

        jsonParameters.verifyCommand(ClusterSetup.enableInstance);


        boolean enabled =
            Boolean.parseBoolean(jsonParameters.getParameter(JsonParameters.ENABLED));


        ZkClient zkClient =
            (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
        ClusterSetup setupTool = new ClusterSetup(zkClient);
        setupTool.getClusterManagementTool().enableInstance(clusterName,
                                                            instanceName,
                                                            enabled);
      }
      else if (command.equalsIgnoreCase(ClusterSetup.enablePartition))
      {
        jsonParameters.verifyCommand(ClusterSetup.enablePartition);
 
        boolean enabled =
             Boolean.parseBoolean(jsonParameters.getParameter(JsonParameters.ENABLED));


        String[] partitions = 
            jsonParameters.getParameter(JsonParameters.PARTITION).split(";");
        String resource = 
            jsonParameters.getParameter(JsonParameters.RESOURCE);


        ZkClient zkClient =
            (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
        ClusterSetup setupTool = new ClusterSetup(zkClient);
        setupTool.getClusterManagementTool().enablePartition(enabled,
                                                             clusterName,
                                                             instanceName,
                                                             resource,
                                                             Arrays.asList(partitions));
      }
      else if (command.equalsIgnoreCase(ClusterSetup.resetPartition))
      {
        jsonParameters.verifyCommand(ClusterSetup.resetPartition);


        String resource = 
            jsonParameters.getParameter(JsonParameters.RESOURCE);


        ZkClient zkClient =
            (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
        ClusterSetup setupTool = new ClusterSetup(zkClient);
        String[] partitionNames = 
            jsonParameters.getParameter(JsonParameters.PARTITION).split("\\s+");
        setupTool.getClusterManagementTool()
                 .resetPartition(clusterName,
                                 instanceName,
                                 resource,
                                 Arrays.asList(partitionNames));
      }
      else if (command.equalsIgnoreCase(ClusterSetup.resetInstance))
      {
        jsonParameters.verifyCommand(ClusterSetup.resetInstance);


        ZkClient zkClient =
            (ZkClient) getContext().getAttributes().get(RestAdminApplication.ZKCLIENT);
        ClusterSetup setupTool = new ClusterSetup(zkClient);
        setupTool.getClusterManagementTool().resetInstance(clusterName,
                                                           Arrays.asList(instanceName));
      }

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