On Tue, 16 Nov 2010, Tom Metro wrote: > 1. Ability to create a library module that can use Log4perl, such that > if the calling code makes no use of Log4perl, it logs independently > with locally specified defaults, but if the caller does use Log4perl, > it picks up the callers settings. Hi Tom,
the current Log4perl implementation assumes that the calling script initializes Log4perl and libraries don't. Libraries make use of Log4perl by issuing log statements, but they don't try to modify the inititalization. If Log4perl isn't initialized in the main program, all is quiet. > The trigger for the problem turned out to be a 'use' call in the eval'ed > code that loaded a library which internally called easy_init() (yet > specifying the INFO logging level). That's very confusing and should be avoided at all cost. > This seems broken that a library using normal Log4perl methods can trash > the logger in use by the calling code. That library wasn't using 'normal Log4perl methods', but was clobbering the settings. We discourage people from doing that, although we don't stop anyone shooting themselves in the foot (or putting up a module on CPAN that shoots everyone in the foot for that matter). But you're bringing up an interesting topic: What would be a good approach to allow a library to meddle with Log4perl's settings, in the absence or even presence of a previous initialization? Everything I've seen so far is just plain confusing to the end user. I'm open to ideas, however. -- Mike Mike Schilli m...@perlmeister.com ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ log4perl-devel mailing list log4perl-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/log4perl-devel
