Re: Conventions for Error Logging

Sending to stderr sounds great then, but how do I find the log after
that? And what does "modern system" mean? Can I rely on my Fedora 17 so
save the log to a file I can find?

On ש', 2013-05-04 at 12:55 -0400, Jasper St. Pierre wrote:
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>
        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
        > 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
        > >
        gtk-list mailing list
        gtk-list gnome org


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