com.creamtec.ajaxswing.core

Class JVMFactory

java.lang.Object

java.rmi.server.RemoteObject

java.rmi.server.RemoteServer

java.rmi.server.UnicastRemoteObject

com.creamtec.ajaxswing.core.JVMFactory

All Implemented Interfaces:

JVMFactoryRemote, java.io.Serializable, java.rmi.Remote

Direct Known Subclasses:

AjaxSwingRouter.InProcessJVMFactory

public class JVMFactory
extends java.rmi.server.UnicastRemoteObject
implements JVMFactoryRemote

Creates and manages external JVMs.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
JVMFactory() Initializes the factory and starts in-process RMI registry

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	execJVMProcess(java.lang.String appName) Executes a JVM process for given application name and returns a ClientAgent unique ID
JVMProcessContext	findFreeJVM(java.lang.String appName, java.lang.String locale) Returns a JVM that can execute another virtual client for a given application
java.util.List	getAppJvms(java.lang.String appName) Returns all JVMs for the given application
JVMProcessContext	getAvailableJVM(java.lang.String appName, java.lang.String locale) If there's already a warmed up JVM, returns it.
void	initRegistry(int registryPort, int portRange)
JVMProcessContext	launchJVM(java.lang.String appName, java.lang.String locale) Launches a new JVM for a given application and waits for it to become available
void	ping() Used by JVMProcesses to check if the server is still running
void	registerJVM(java.lang.String appName, JVMProcessRemote jvmProcess) Registers external JVM with the factory.
void	shutdown() Shuts down all registered external JVMs
void	shutdownJVM(JVMProcessContext jvmContext, java.lang.String appName) Shuts down the JVM identified by the JVM context and the application name
void	unregisterJVM(JVMProcessContext jvmContext, java.lang.String appName) Unregisteres external JVM with the factory
JVMProcessContext	waitForJVM(java.lang.String appName, java.lang.String clientAgentId, java.lang.String locale) Waits until a JVM for a given application becomes available

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

JVMFactory

public JVMFactory()
           throws java.lang.Exception

Initializes the factory and starts in-process RMI registry

Throws:

java.lang.Exception

Method Detail

initRegistry

public void initRegistry(int registryPort,
                int portRange)
                  throws java.lang.Exception

Throws:

java.lang.Exception

getAvailableJVM

public JVMProcessContext getAvailableJVM(java.lang.String appName,
                                java.lang.String locale)
                                  throws java.lang.Exception

If there's already a warmed up JVM, returns it. Othewise lauches a new JVM and waits for it to register with the server process. The method is synchronized to prevent a second thread from stealing a JVM launched by the first thread without launching its own JVM

Throws:

java.lang.Exception

findFreeJVM

public JVMProcessContext findFreeJVM(java.lang.String appName,
                            java.lang.String locale)
                              throws java.lang.Exception

Returns a JVM that can execute another virtual client for a given application

Parameters:

appName - String

Returns:

JVMProcessContext

Throws:

java.lang.Exception

getAppJvms

public java.util.List getAppJvms(java.lang.String appName)

Returns all JVMs for the given application

Parameters:

appName - application name

Returns:

List

launchJVM

public JVMProcessContext launchJVM(java.lang.String appName,
                          java.lang.String locale)
                            throws java.lang.Exception

Launches a new JVM for a given application and waits for it to become available

Parameters:

appName - application name

Returns:

JVMProcessContext

Throws:

java.lang.Exception

execJVMProcess

public java.lang.String execJVMProcess(java.lang.String appName)
                                throws java.lang.Exception

Executes a JVM process for given application name and returns a ClientAgent unique ID

Parameters:

appName - application name

Returns:

ClientAgent unique ID

Throws:

java.lang.Exception

waitForJVM

public JVMProcessContext waitForJVM(java.lang.String appName,
                           java.lang.String clientAgentId,
                           java.lang.String locale)
                             throws java.lang.Exception

Waits until a JVM for a given application becomes available

Parameters:

appName - application name

Returns:

JVMProcessContext

Throws:

java.lang.Exception

registerJVM

public void registerJVM(java.lang.String appName,
               JVMProcessRemote jvmProcess)
                 throws java.lang.Exception

Registers external JVM with the factory. This method is called by the external JVM process when it's initialized.

Specified by:

registerJVM in interface JVMFactoryRemote

Parameters:

appName - application name

jvmProcess - JVMProcessRemote

Throws:

java.lang.Exception

shutdownJVM

public void shutdownJVM(JVMProcessContext jvmContext,
               java.lang.String appName)

Shuts down the JVM identified by the JVM context and the application name

Parameters:

jvmContext - JVMProcessContext

appName - application name

unregisterJVM

public void unregisterJVM(JVMProcessContext jvmContext,
                 java.lang.String appName)

Unregisteres external JVM with the factory

Parameters:

jvmContext - JVMProcessContext

appName - String

shutdown

public void shutdown()

Shuts down all registered external JVMs

ping

public void ping()

Used by JVMProcesses to check if the server is still running

Specified by:

ping in interface JVMFactoryRemote