Class CommandClient

java.lang.Object
org.apache.zookeeper.server.controller.CommandClient

public class CommandClient extends Object
A convenient helper to send controller command to ControllerService.
  • Constructor Details

    • CommandClient

      public CommandClient(int localHostPort, int requestTimeoutInMs)
      Instantiate a client configured to send requests to localhost.
      Parameters:
      localHostPort - Port that the localhost CommandListener is listening on.
      requestTimeoutInMs - Timeout in ms for synchronous requests to timeout.
    • CommandClient

      public CommandClient(InetSocketAddress hostAddress, int requestTimeoutInMs)
      Instantiate a client configured to send requests to the specified host address.
      Parameters:
      hostAddress - The host address of the listening server.
      requestTimeoutInMs - Timeout in ms for synchronous requests to timeout.
    • CommandClient

      public CommandClient(int localhostPort)
  • Method Details

    • close

      public void close()
    • trySendCommand

      public boolean trySendCommand(ControlCommand.Action action)
      Send a command with no parameters to the server and wait for a response. Returns true if we received a good (200) response and false otherwise.
    • trySendCommand

      public boolean trySendCommand(ControlCommand.Action action, String commandParameter)
      Send a command with an optional command parameter to the server and wait for a response.
      Parameters:
      action - The command Action to send.
      commandParameter - The command parameter, in the form of command/action/parameter.
      Returns:
      true if we received a good (200) response and false otherwise.
    • sendCommand

      public org.eclipse.jetty.client.api.ContentResponse sendCommand(ControlCommand.Action action, String commandParameter) throws Exception
      Send a command and optional command parameter to the server and block until receiving a response.
      Parameters:
      action - The command Action to send.
      commandParameter - The command parameter, in the form of command/action/parameter.
      Returns:
      The full response body from the CommandListener server.
      Throws:
      Exception