RE: [Wrapper-user] Wrapper stdout redirection in realtime

[Daniel M. <dan...@be...>]

Leif,

> Strange.  I assume you are using the console output of the Wrapper.  =20
> That output should
> be getting sent to stdout in pretty much real time.  It shows=20
> up in the console immediately
> on all platforms at least.   I wonder if there is some kind=20
> of a flush=20
> that needs to be done
> that is not needed the way the wrapper is normally used.  You=20
> might want to try poking
> around in the logger.c file to see if you have any ideas.  =20
> The Windows=20
> version makes
> use of the WriteConsole function to write to the console if=20
> running as a service and a console is being displayed.  Other=20
> cases simply write to stdout.

I will take a peek at it today to see if I notice anything obvious...

> I'll poke around, but other than flushing ???  Not sure what=20
> it would be.  Let me know how your program is running.  If=20
> you are running as a service, then you may need to set the=20
> wrapper.ntservice.console property to get a console to capture from.

I apologize! I should have mentioned in my first message: I am running
in console mode, NOT as a service. Hopefully this will be a clue.=20

Thanks for the tips. The search continues...

Daniel Mace
Software Engineer, Payroll Integration
benefitfocus.com
843-849-7476 x393


> -----Original Message-----
> From: wra...@li...=20
> [mailto:wra...@li...] On Behalf=20
> Of Leif Mortenson
> Sent: Thursday, February 09, 2006 10:33 PM
> To: wra...@li...
> Subject: Re: [Wrapper-user] Wrapper stdout redirection in realtime
>=20
> Daniel,
>=20
> Daniel Mace wrote:
> > I have a C#/.NET 2.0 GUI application I use as a front end to a Java=20
> > application I have developed. Traditionally, this Java app=20
> was invoked=20
> > via a DOS batch script which constructed classpaths and=20
> executed the=20
> > Java command directly. Within the GUI application, I was able to=20
> > invoke the batch script and redirect stdout and stderr to=20
> capture the=20
> > Java app's output in realtime and display it to the user.=20
> In order to=20
> > gain more control over the indirectly-invoked Java app, I have=20
> > encapsulated it in the Service Wrapper, to good effect (For=20
> instance,=20
> > I can now capture the pid of the Java/wrapper instance and kill it=20
> > from the C# application). I realize this isn't necessarily=20
> the intent=20
> > of the wrapper, but launch4j can't do all the classpath=20
> stuff I need,=20
> > and I don't have access to an exe4j license. So bear with me...
> >  =20
> Fine.  viva open source. :-)
> > My problem is this: since I modified the batch script to invoke the=20
> > wrapper rather than the Java command itself to launch the=20
> application,=20
> > my C# application no longer gets realtime output from stdout/stderr=20
> > when the wrapper is running. The C# code itself hasn't changed; in=20
> > fact, output from the batch script itself gets redirected=20
> properly and=20
> > in realtime as before. It's just the wrapper output which=20
> is funky: it=20
> > doesn't actually get passed back to stdout until it's=20
> completely run=20
> > its course.
> >  =20
> Strange.  I assume you are using the console output of the Wrapper.  =20
> That output should
> be getting sent to stdout in pretty much real time.  It shows=20
> up in the console immediately
> on all platforms at least.   I wonder if there is some kind=20
> of a flush=20
> that needs to be done
> that is not needed the way the wrapper is normally used.  You=20
> might want to try poking
> around in the logger.c file to see if you have any ideas.  =20
> The Windows=20
> version makes
> use of the WriteConsole function to write to the console if=20
> running as a service and a console is being displayed.  Other=20
> cases simply write to stdout.
> > Any ideas what could be causing this? Obviously it's redirecting=20
> > somewhat properly, because I do eventually get the stdout stream...=20
> > but not until the end of the wrapper execution. I searched and=20
> > couldn't find any configuration properties related to=20
> output redirection.
> >  =20
> I'll poke around, but other than flushing ???  Not sure what=20
> it would be.  Let me know how your program is running.  If=20
> you are running as a service, then you may need to set the=20
> wrapper.ntservice.console property to get a console to capture from.
>=20
> Cheers,
> Leif
> > Heeeelllp! :)
> >
> > Daniel Mace
> > Software Engineer, Payroll Integration benefitfocus.com
> > 843-849-7476 x393
> >
> >
> >=20
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