org.apache.zookeeper.server.controller

Class ControllerService

java.lang.Object

org.apache.zookeeper.server.controller.ControllerService

public class ControllerService
extends Object

Main class which starts a ZooKeeperServer, a ZooKeeperServerController and the ControllerService. Tests should either invoke this class as the main target of a new JVM process OR explicitly start and stop a singleton of this class in their test process.

Field Summary

Fields

Modifier and Type	Field and Description
protected QuorumPeerConfig	config
protected QuorumPeer	quorumPeer

Constructor Summary

Constructors

Constructor and Description
ControllerService()

Method Summary

Modifier and Type	Method and Description
protected void	cleanup()
protected void	initConfig(String[] args) Derived classes may override to do custom initialization of command line args.
void	initializeAndRun(String[] args) Runs the main loop for this application but does not exit the process.
protected void	initService() Initializes an instance of the ZooKeeperServer, the ZooKeeperServerController, and a new Http listener (CommandListener) for the controller.
boolean	isReady() Is the service up with all necessary initialization and port opening complete?
static void	main(String[] args) Starts the ControllerService as a stand alone app.
protected void	run()
void	runFromConfig(QuorumPeerConfig config) Run the app given a QuorumPeerConfig.
protected void	runServices()
void	shutdown()
Thread	start(ControllerServerConfig controllerConfig) Starts a new thread to run the controller (useful when this service is hosted in process - such as during unit testing).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

config

protected QuorumPeerConfig config

quorumPeer

protected QuorumPeer quorumPeer

Constructor Detail

ControllerService

public ControllerService()

Method Detail

main

public static void main(String[] args)

Starts the ControllerService as a stand alone app. Useful for out of process testing - such as during integration testing.

start

public Thread start(ControllerServerConfig controllerConfig)

Starts a new thread to run the controller (useful when this service is hosted in process - such as during unit testing).

shutdown

public void shutdown()

initService

protected void initService()
                    throws IOException

Initializes an instance of the ZooKeeperServer, the ZooKeeperServerController, and a new Http listener (CommandListener) for the controller.

Throws:

IOException

runServices

protected void runServices()

cleanup

protected void cleanup()

initializeAndRun

public void initializeAndRun(String[] args)
                      throws QuorumPeerConfig.ConfigException

Runs the main loop for this application but does not exit the process.

Throws:

QuorumPeerConfig.ConfigException

initConfig

protected void initConfig(String[] args)
                   throws QuorumPeerConfig.ConfigException

Derived classes may override to do custom initialization of command line args.

Throws:

QuorumPeerConfig.ConfigException

runFromConfig

public void runFromConfig(QuorumPeerConfig config)

Run the app given a QuorumPeerConfig.

Parameters:

config - The quorum peer config.

run

protected void run()

isReady

public boolean isReady()

Is the service up with all necessary initialization and port opening complete?

Returns:

true if the controller service is ready to use; false otherwise.