Re: Conventions for Error Logging

For debugging sake, log to stderr / stdout. A modern system will redirect stderr to something like the systemd journal for structured logging appropriately.

On Sat, May 4, 2013 at 12:46 PM, אנטולי קרסנר <tombackton gmail com> wrote:
Thanks for your reply,

I realized app error logs are needed only for debugging, I guess that's
why release-build apps in general don't need to log anything. In debug
mode, I'm taking your advice to write to the standard home cache dir.


On א', 2013-05-05 at 01:16 +0900, Tristan Van Berkom wrote:
> On Sat, May 4, 2013 at 10:22 PM, אנטולי קרסנר <tombackton gmail com> wrote:
> > Hello,
> >
> > I'm writing a desktop application using Gnome technologies. I added
> > support for some operations which may fail or produce useful errors, so
> > I decided I want the app to record the warnings and errors in a log
> > file, allowing me to see the report later, and find bugs.
> >
> > I tried to find any conventions for GNU software logging, and for Gnome
> > apps, but I found nothing.
> >
> > Is there a convention for that? A standard location for log files in
> > filesystem/home directory? A common standard for naming them and filling
> > the contents?
> System daemons would generally dump logs somewhere like:
>     $(localstatedir)/log/$(daemonname)/$(daemonname).log
> Apps don't really log AFAIK, as they don't really have write permissions
> to /var/log, instead I would think it more appropriate for the app launcher
> (something integrated in the window manager, like a springboard) to direct
> logging of an apps' stdout/stderr to some directory *it* controls (however
> I don't know if WMs or gnome-shell actually do this, just think it would
> be the 'right way').
> If your app must write somewhere, it would be safe to write in XDG_CACHE_HOME
> (g_get_user_cache_dir()).
> Cheers,
>     -Tristan
> >
> > And does Gnome have a log viewer app for reading log files produced by
> > applications?
> >
> >
> > Anatoly
> >
> > _______________________________________________
> > gtk-list mailing list
> > gtk-list gnome org
> >

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