OpenSAML user discussion

[Chad La Joie <>]

Okay, I'll probably do this tomorrow morning (my time, GMT+1) if I don't 
have any objects by the time I get in tomorrow.  Feedback so far seems 
to indicate this is a generally good move.

Chad La Joie wrote:
> About a week ago I moved the Shibboleth IdP code base to use SLF4J as 
> its logging interface.  I did this for one main reason; different 
> environments have really begun to diverge in their logging layer.  Some 
> (e.g. some versions of Tomcat) are using old versions Log4J, some are 
> using newer version that break when used with the older version (yay for 
> API changes in patch releases), some are using the java.util.logging 
> (JULI) system.  This is making it increasingly difficult to figure out 
> what to target and leading to a number of class/classpath errors.  In 
> addition I got some syntax sugar, which was nice, but not the reason I 
> made the change.
>
> After evaluating SLF4J I found that it suited the needs of the IdP.  It 
> is similar to Jakarta Commons Logging but without some of the 
> classloading issues.  It can bind to Log4J, JULI, and other logging 
> systems.  If no one has any objections I'd like to move the OpenSAML 
> stack (XMLTooling, OpenWS, and OpenSAML 2) to SLF4J.
>
> For more information on SLF4J you can check out its website:
> http://www.slf4j.org/
>
> For some discussion on the problems with Jakarta Logging Commons you can 
> check out this blog entry and related links.
> http://bsnyderblog.blogspot.com/2007/08/my-soapbox-for-slf4j.html
>
> I will *not* be recommending a particular binding for SLF4J (i.e. Log4J, 
> JULI, LogBack, whatever), people should use what is best/supported in 
> their environment.  I can say for the IdP I happen to use LogBack 
> because it has a few features that I prefer that Log4J doesn't have.  I 
> personally refuse to use JULI mostly for the reasons cited in the above 
> blog post.
>
> So, if you have comments, please let me know by the end of the week.
>
> Thanks.

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