On Wed, May 29, 2013 at 02:01:59PM +0200, Matthieu Moy wrote:
> > I wonder if we can do something like:
> >
> > our $mw_operation;
> > $mediawiki->{config}->{on_error} = sub {
> > [...]
> > die "$err\n";
> > };
>
> Probably, but that would hardcode the fact that mediawiki errors are
> fatal, while in an ideal world, some errors should be recoverable, and
> some would require some cleanups before die-ing.
Fortunately this is perl, not C. We can catch and re-throw die
exceptions like:
my $mw_pages = eval { $mediawiki->list(...) };
if (!$mw_pages) {
# possibly continue to something else, or even...
clean_up();
die; # propagate $@
}
but it would require checking all of the call-sites. Another alternative
would be a wrapper function that each caller could opt into. But I
suspect the norm will be to die, so the exception model should make the
code cleaner.
> Also, an error during the first mediawiki operation should not
> necessarily have the same diagnosis hint as the others: if I just
> did a successfull querry, and the next fails, it can hardly be an SSL
> certificate error.
Yeah, my error template was just a sketch; I didn't look too carefully
at all of the callers, but the concept should be extensible.
> I'll send a v2 that covers a bit more (at least, push and pull with an
> invalid certificate both give the message).
Thanks.
-Peff
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