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[Wrapper-user] Error in WrapperListener.stop callback
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From: Cobble, T. <tim...@lm...> - 2004-06-15 12:23:21
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All,
Using the integration method of the wrapper. Attempting to call custom
code in the stop method. Errors received.
I know I am calling into my custom code due to the console output of
"Calling pauseServer" But I am not able to stop the threads, something
bails out. This is existing code that I know works, just calling it
from the wrapper.
Pasting Code, and Errors from both the console output and the log file.
Any help would be most appreciated!!!!
Tim
C O D E
------------------------------------------------------------------------
------------------------------------------------------
import org.tanukisoftware.wrapper.WrapperManager;
import org.tanukisoftware.wrapper.WrapperListener;
import com.lmco.itis.fis.server.*;
public class MainWrapper
implements WrapperListener
{
private ApplicationMain m_app;
/*---------------------------------------------------------------
* Constructors
*-------------------------------------------------------------*/
private MainWrapper()
{
}
/*---------------------------------------------------------------
* WrapperListener Methods
*-------------------------------------------------------------*/
public Integer start( String[] args )
{
m_app = new ApplicationMain();
m_app.main(args);
//m_app.start <file:///\\m_app.start> ();
return null;
}
/**
*
* @param exitCode The suggested exit code that will be
retJ4RcuQ71YLurned to the OS
* when the JVM exits.
*
* @return The exit code to actually return to the OS. In most
cases, this
* should just be the value of exitCode, however the user
code has
* the option of changing the exit code if there are any
problems
* during shutdown.
*/
public int stop( int exitCode )
{
System.out.println("The Stop Method Got Called.");
WrapperManager.signalStopping(60000);
m_app.stopServer();
return exitCode;
}
/**
* Called whenever the native wrapper code traps a system control
signal
* against the Java process. It is up to the callback to take any
actions
* necessary. Possible values are:
WrapperManager.WRAPPER_CTRL_C_EVENT,
* WRAPPER_CTRL_CLOSE_EVENT, WRAPPER_CTRL_LOGOFF_EVENT, or
* WRAPPER_CTRL_SHUTDOWN_EVENT
*
* @param event The system control signal.
*/
public void controlEvent( int event )
{
if (WrapperManager.isControlledByNativeWrapper())
{
// The Wrapper will take care of this event
System.out.println("isControlledByNativeWrapper");
WrapperManager.stop(0);
}
else
{
// We are not being controlled by the Wrapper, so
// handle the event ourselves.
if ((event == WrapperManager.WRAPPER_CTRL_C_EVENT) ||
(event == WrapperManager.WRAPPER_CTRL_CLOSE_EVENT) ||
(event == WrapperManager.WRAPPER_CTRL_SHUTDOWN_EVENT))
{
System.out.println("In the wrapper_ctrl block");
WrapperManager.stop(0);
}
}
}
/*---------------------------------------------------------------
* Main Method
*-------------------------------------------------------------*/
public static void main( String[] args )
{
WrapperManager.start( new MainWrapper(), args );
}
}
L O G
------------------------------------------------------------------------
------------------------------------------------------
STATUS | wrapper | 2004/06/15 08:12:45 | --> Wrapper Started as Console
STATUS | wrapper | 2004/06/15 08:12:45 | Launching a JVM...
INFO | jvm 1 | 2004/06/15 08:12:47 | Wrapper (Version 3.1.0)
http://wrapper.tanukisoftware.org
INFO | jvm 1 | 2004/06/15 08:12:47 |
STATUS | wrapper | 2004/06/15 08:17:26 | CTRL-C trapped. Shutting
down.
INFO | jvm 1 | 2004/06/15 08:17:26 | The Stop Method Got Called.
INFO | jvm 1 | 2004/06/15 08:17:26 | Calling pauseServer
INFO | jvm 1 | 2004/06/15 08:17:26 | Error in WrapperListener.stop
callback. java.lang.NullPointerException
INFO | jvm 1 | 2004/06/15 08:17:26 |
java.lang.NullPointerExceptionisControlledByNativeWrapper
INFO | jvm 1 | 2004/06/15 08:17:26 |
INFO | jvm 1 | 2004/06/15 08:17:26 | at
com.lmco.itis.fis.server.ApplicationMain.stopServer(ApplicationMain.java
:26)
INFO | jvm 1 | 2004/06/15 08:17:26 | at
MainWrapper.stop(MainWrapper.java:61)
INFO | jvm 1 | 2004/06/15 08:17:26 | at
org.tanukisoftware.wrapper.WrapperManager.stopInner(WrapperManager.java:
1903)
INFO | jvm 1 | 2004/06/15 08:17:26 | at
org.tanukisoftware.wrapper.WrapperManager.handleSocket(WrapperManager.ja
va:2312)
INFO | jvm 1 | 2004/06/15 08:17:26 | at
org.tanukisoftware.wrapper.WrapperManager.run(WrapperManager.java:2602)
INFO | jvm 1 | 2004/06/15 08:17:26 | at
java.lang.Thread.run(Thread.java:536)
STATUS | wrapper | 2004/06/15 08:17:27 | <-- Wrapper Stopped
C O N S O L E
------------------------------------------------------------------------
------------------------------------------------------
wrapper | --> Wrapper Started as Console
wrapper | Launching a JVM...
jvm 1 | Wrapper (Version 3.1.0) http://wrapper.tanukisoftware.org
jvm 1 |
wrapper | CTRL-C trapped. Shutting down.
jvm 1 | The Stop Method Got Called.
jvm 1 | Calling pauseServer
jvm 1 | Error in WrapperListener.stop callback.
java.lang.NullPointerException
jvm 1 | java.lang.NullPointerExceptionisControlledByNativeWrapper
jvm 1 |
jvm 1 | at
com.lmco.itis.fis.server.ApplicationMain.stopServer(ApplicationMain.java
:26)
jvm 1 | at MainWrapper.stop(MainWrapper.java:61)
jvm 1 | at
org.tanukisoftware.wrapper.WrapperManager.stopInner(WrapperManager.java:
1903)
jvm 1 | at
org.tanukisoftware.wrapper.WrapperManager.handleSocket(WrapperManager.ja
va:2312)
jvm 1 | at
org.tanukisoftware.wrapper.WrapperManager.run(WrapperManager.java:2602)
jvm 1 | at java.lang.Thread.run(Thread.java:536)
wrapper | <-- Wrapper Stopped
Terminate batch job (Y/N)?
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