Re: [Wrapper-user] How to configure/What are the requirements to configure a Windows Service with automatic recovery?

[Fábio B. de O. <gtc...@cf...>]

Hello Leif, thank you for your fast response.

I´m trying to emulate a application failure, I´m using the following class:

import org.apache.log4j.Logger;
import org.tanukisoftware.wrapper.WrapperListener;
import org.tanukisoftware.wrapper.WrapperManager;

public class Runner implements WrapperListener {

private static Logger LOG = Logger.getLogger(Runner.class);

private Runner runner;

/**
 * @param args
 * @return
 * @throws InterruptedException
 * @throws Exception
 */
public Integer start(String[] args) {
if (runner == null) {
runner = this;
}
runner.start();

return null;

}

public static void main(String args[]) throws InterruptedException {
WrapperManager.start(new Runner(), args);
}

public void start() {
LOG.info("Starting a Java-Window Service test");

Runnable r = new Runnable() {

@Override
public void run() {
try {
Thread.sleep(10000);

LOG.warn("The app will emulate a failure in 50s");

Thread.sleep(30000);
LOG.warn("The app will emulate a failure in 20s");

Thread.sleep(10000);
LOG.warn("The app will emulate a failure in 10s");

Thread.sleep(10000);
LOG.fatal("Emulating a app failure!");

System.exit(-1);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
};
 new Thread(r).start();
}

@Override
public void controlEvent(int arg0) {
// TODO Auto-generated method stub

}

@Override
public int stop(int exitCode) {
LOG.info("App exit code: " + exitCode);
return exitCode;
}

}


How you can see, I´m using the WrapperListener, I started a thread which
count down until exit with a System.exit(-1). The classpath contain the
wrapper.jar, the log4j-1.2.16.jar and my app jar, I´m using the
NTEventLogAppender, and I can see the log messages being writed to the
Event Log, but the service after 60s die and don´t come back after 1min as
configured.


This information is useful?


On Wed, Feb 8, 2012 at 3:42 PM, Leif Mortenson <
lei...@ta...> wrote:

> Fabio,
> Thank you for the configuration file.  It looks like you have it set
> up correctly.  There are a couple things to keep in mind.
>
> 1) There are two components which are being monitored.
>
> a) The first is the JVM itself.  Many JVM problems can be monitored,
> detected, and recovered by the Wrapper process.  In these cases, the
> wrapper.ntservice.recovery.* properties are not used.
>
> b) The second is if the Wrapper process itself crashes.  This is rare,
> but if it did happen, then the Windows Service Manager can make use of
> the settings in the wrapper.ntservice.recovery.* properties to restart
> the Wrapper process as a service and thus make sure your service stays
> up and running.
>
> 2) The wrapper.ntservice.recovery.* properties are available in the
> Standard and Professional editions.
> wrapper.tanukisoftware.com/doc/english/prop-ntservice-recovery.html
>
> How are you running your tests?  Is it a test of the JVM crashing or
> the Wrapper?
>
> Cheers,
> Leif
>
> 2012/2/9 Fábio Braga de Oliveira <gtc...@cf...>:
> > Hello list!
> >
> > I´m trying to put my java application to run as a Windows Service, and I
> > would like to make this service very fail safe. For this, I´m evaluation
> the
> > Java Service Wrapper, and trying to configure the Windows to restart the
> > service if it fails (using the recovery tab in the service
> configurations),
> > but without success.
> >
> > My question is: What are the requirements/parameters to achieve this
> > requirement? I already tryied the integration methods 1 and 3, but for
> now I
> > don´t now what´s the right return code to force a automatic restart.
> >
> > My wrapper.conf is attached.
> >
> > Thank you in advance for any help!
>
>
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