org.apache.zookeeper.server.admin

Class JettyAdminServer

java.lang.Object

org.apache.zookeeper.server.admin.JettyAdminServer

All Implemented Interfaces:

AdminServer

public class JettyAdminServer
extends Object
implements AdminServer

This class encapsulates a Jetty server for running Commands. Given the default settings, start a ZooKeeper server and visit http://:8080/commands for links to all registered commands. Visiting http://:8080/commands/ will execute the associated Command and return the result in the body of the response. Any keyword arguments to the command are specified with URL parameters (e.g., http://localhost:8080/commands/set_trace_mask?traceMask=306).

See Also:

Commands, CommandOutputter

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.zookeeper.server.admin.AdminServer

AdminServer.AdminServerException

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_COMMAND_URL
static int	DEFAULT_IDLE_TIMEOUT
static int	DEFAULT_PORT

Constructor Summary

Constructors

Constructor and Description
JettyAdminServer()
JettyAdminServer(String address, int port, int timeout, String commandUrl)

Method Summary

Modifier and Type	Method and Description
void	setZooKeeperServer(ZooKeeperServer zkServer) Set the ZooKeeperServer that will be used to run Commands.
void	shutdown() Stop the embedded Jetty server.
void	start() Start the embedded Jetty server.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PORT

public static final int DEFAULT_PORT

See Also:

Constant Field Values

DEFAULT_IDLE_TIMEOUT

public static final int DEFAULT_IDLE_TIMEOUT

See Also:

Constant Field Values

DEFAULT_COMMAND_URL

public static final String DEFAULT_COMMAND_URL

See Also:

Constant Field Values

Constructor Detail

JettyAdminServer

public JettyAdminServer()
                 throws AdminServer.AdminServerException

Throws:

AdminServer.AdminServerException

JettyAdminServer

public JettyAdminServer(String address,
                        int port,
                        int timeout,
                        String commandUrl)

Method Detail

start

public void start()
           throws AdminServer.AdminServerException

Start the embedded Jetty server.

Specified by:

start in interface AdminServer

Throws:

AdminServer.AdminServerException

shutdown

public void shutdown()
              throws AdminServer.AdminServerException

Stop the embedded Jetty server. This is not very important except for tests where multiple JettyAdminServers are started and may try to bind to the same ports if previous servers aren't shut down.

Specified by:

shutdown in interface AdminServer

Throws:

AdminServer.AdminServerException

setZooKeeperServer

public void setZooKeeperServer(ZooKeeperServer zkServer)

Set the ZooKeeperServer that will be used to run Commands. It is not necessary to set the ZK server before calling AdminServer.start(), and the ZK server can be set to null when, e.g., that server is being shut down. If the ZK server is not set or set to null, the AdminServer will still be able to issue Commands, but they will return an error until a ZK server is set.

Specified by:

setZooKeeperServer in interface AdminServer