org.tanukisoftware.wrapper.jmx
Class WrapperManager

java.lang.Object
  org.tanukisoftware.wrapper.jmx.WrapperManager

All Implemented Interfaces:

WrapperManagerMBean

public class WrapperManager
extends Object
implements WrapperManagerMBean

Author:

Leif Mortenson

Constructor Summary

WrapperManager()

Method Summary

String	getBuildTime() Obtain the build time of Wrapper.
boolean	getHasShutdownHookBeenTriggered() Returns true if the ShutdownHook for the JVM has already been triggered.
int	getJavaPID() Returns the PID of the Java process.
int	getJVMId() Returns the Id of the current JVM.
String	getVersion() Obtain the current version of Wrapper.
int	getWrapperPID() Returns the PID of the Wrapper process.
boolean	isControlledByNativeWrapper() Returns true if the JVM was launched by the Wrapper application.
boolean	isDebugEnabled() Returns true if the wrapper.debug property, or any of the logging channels are set to DEBUG in the wrapper configuration file.
boolean	isLaunchedAsService() Returns true if the Wrapper was launched as an NT service on Windows or as a daemon process on UNIX platforms.
boolean	isProfessionalEdition() Returns true if the current Wrapper edition has support for Professional Edition features.
boolean	isStandardEdition() Returns true if the current Wrapper edition has support for Standard Edition features.
void	requestThreadDump() Requests that the current JVM process request a thread dump.
void	restart() Tells the native wrapper that the JVM wants to restart, then informs all listeners that the JVM is about to shutdown before killing the JVM.
void	setConsoleTitle(String title) Sets the title of the console in which the Wrapper is running.
void	stop(int exitCode) Tells the native wrapper that the JVM wants to shut down, then informs all listeners that the JVM is about to shutdown before killing the JVM.

Methods inherited from class java.lang.Object

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

Constructor Detail

WrapperManager

public WrapperManager()

Method Detail

getVersion

public String getVersion()

Obtain the current version of Wrapper.

Specified by:

getVersion in interface WrapperManagerMBean

Returns:

The version of the Wrapper.

getBuildTime

public String getBuildTime()

Obtain the build time of Wrapper.

Specified by:

getBuildTime in interface WrapperManagerMBean

Returns:

The time that the Wrapper was built.

getJVMId

public int getJVMId()

Returns the Id of the current JVM. JVM Ids increment from 1 each time the wrapper restarts a new one.

Specified by:

getJVMId in interface WrapperManagerMBean

Returns:

The Id of the current JVM.

isProfessionalEdition

public boolean isProfessionalEdition()

Returns true if the current Wrapper edition has support for Professional Edition features.

Specified by:

isProfessionalEdition in interface WrapperManagerMBean

Returns:

True if professional features are supported.

isStandardEdition

public boolean isStandardEdition()

Returns true if the current Wrapper edition has support for Standard Edition features.

Specified by:

isStandardEdition in interface WrapperManagerMBean

Returns:

True if standard features are supported.

setConsoleTitle

public void setConsoleTitle(String title)

Sets the title of the console in which the Wrapper is running. This is currently only supported on Windows platforms.

As an alternative, it is also possible to set the console title from within the wrapper.conf file using the wrapper.console.title property.

Specified by:

setConsoleTitle in interface WrapperManagerMBean

Parameters:

title - The new title. The specified string will be encoded to a byte array using the default encoding for the current platform.

getWrapperPID

public int getWrapperPID()

Returns the PID of the Wrapper process. A PID of 0 will be returned if the JVM was launched standalone. This value can also be obtained using the 'wrapper.pid' system property.

Specified by:

getWrapperPID in interface WrapperManagerMBean

Returns:

The PID of the Wrpper process.

getJavaPID

public int getJavaPID()

Returns the PID of the Java process. A PID of 0 will be returned if the native library has not been initialized. This value can also be obtained using the 'wrapper.java.pid' system property.

Specified by:

getJavaPID in interface WrapperManagerMBean

Returns:

The PID of the Java process.

requestThreadDump

public void requestThreadDump()

Requests that the current JVM process request a thread dump. This is the same as pressing CTRL-BREAK (under Windows) or CTRL-\ (under Unix) in the the console in which Java is running. This method does nothing if the native library is not loaded.

Specified by:

requestThreadDump in interface WrapperManagerMBean

isControlledByNativeWrapper

public boolean isControlledByNativeWrapper()

Returns true if the JVM was launched by the Wrapper application. False if the JVM was launched manually without the Wrapper controlling it.

Specified by:

isControlledByNativeWrapper in interface WrapperManagerMBean

Returns:

True if the current JVM was launched by the Wrapper.

isLaunchedAsService

public boolean isLaunchedAsService()

Returns true if the Wrapper was launched as an NT service on Windows or as a daemon process on UNIX platforms. False if launched as a console. This can be useful if you wish to display a user interface when in Console mode. On UNIX platforms, this is not as useful because an X display may not be visible even if launched in a console.

Specified by:

isLaunchedAsService in interface WrapperManagerMBean

Returns:

True if the Wrapper is running as an NT service or daemon process.

isDebugEnabled

public boolean isDebugEnabled()

Returns true if the wrapper.debug property, or any of the logging channels are set to DEBUG in the wrapper configuration file. Useful for deciding whether or not to output certain information to the console.

Specified by:

isDebugEnabled in interface WrapperManagerMBean

Returns:

True if the Wrapper is logging any Debug level output.

restart

public void restart()

Tells the native wrapper that the JVM wants to restart, then informs all listeners that the JVM is about to shutdown before killing the JVM.

The restart is actually performed in a background thread allowing JMX a chance to respond to the client.

Specified by:

restart in interface WrapperManagerMBean

stop

public void stop(int exitCode)

Tells the native wrapper that the JVM wants to shut down, then informs all listeners that the JVM is about to shutdown before killing the JVM.

The stop is actually performed in a background thread allowing JMX a chance to respond to the client.

Specified by:

stop in interface WrapperManagerMBean

Parameters:

exitCode - The exit code that the Wrapper will return when it exits.

getHasShutdownHookBeenTriggered

public boolean getHasShutdownHookBeenTriggered()

Returns true if the ShutdownHook for the JVM has already been triggered. Some code needs to know whether or not the system is shutting down.

Specified by:

getHasShutdownHookBeenTriggered in interface WrapperManagerMBean

Returns:

True if the ShutdownHook for the JVM has already been triggered.