Hi, reading this thread on the Spring DM forum [1] reminded me of the "logging madness" (commons, log4j, slf4, slf4j bridges, ...) that everybody starting with Felix and OSGi (and JaveEE, nowadays) will eventually find.
In brief the problem is the base API of slf4j is a bundle, but implementations like lf4j-log4j12 are bundle fragments with import/export, therefore currently not supported by Felix. These prevents newbies to run, f.i., Spring DM out of the box, confusion, and maybe migrating to other osgi containers. Of course there are many simple solutions to this problem, but I think it would be nice to provide some FAQ/precooked solution for everybody. So the question is: what do you use? What's the best option? - in my case, I have osgi-fied slf4 with the log4j binding with the maven osgi plugin. Maybe a candidate for felix commons? - does such a bundle already exist anywhere, so we can point user to that bundle? - I actually noticed that if I remove the Fragment-Host property in the lf4j-log4j12.jar everything seems to work. Such property was added to make it work with Equinox (bug 73 [2]) due to a dependency cycle between the api and the impl. However, removing the fragmeng-host, Felix doesn't complain [1] http://forum.springsource.org/showthread.php?t=70639 [2] http://bugzilla.slf4j.org/show_bug.cgi?id=73 -- Filippo Diotalevi --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
