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

[Leif M. <lei...@ta...>]

Fabio,
By default, the Wrapper dos not view and exit -1 as a failure.  That
is a valid way of the JVM exiting.

If you wish to restart or take some other action based on a particular
exit code, you can use the wrapper.on_exit.N properties:
http://wrapper.tanukisoftware.com/doc/english/prop-on-exit-n.html

For example:
wrapper.on_exit.default=RESTART
wrapper.on_exit.0=SHUTDOWN

That will restart for any exit code other than 0.

Cheers,
Leif

2012/2/9 Fábio Braga de Oliveira <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!