On Nov 16, 2012, at 7:30 AM, Benson Margulies <[email protected]> wrote:

> On Fri, Nov 16, 2012 at 7:03 AM, Chris Graham <[email protected]> wrote:
>> I prefer classname based, as it is, by definition, definative.
>> 
>> If you're concerned about details getting lost, then might I suggest that
>> you route that logging output to a separate file? trace.log works for me
>> (and give a -D to allow users to change that as well).
> 
> 
> 
> Hervé has pointed out that we already have an API that has no natural
> mapping to a class name. How would you, or Jason, propose to obtain a
> class name to go with getLog()?

Inject the SLF4J logger factory and use that with the underlying component 
descriptor's implementation definition which is the class name. 

> 
> 
> 
>> 
>> -Chris
>> 
>> 
>> On Fri, Nov 16, 2012 at 5:39 PM, Hervé BOUTEMY <[email protected]>wrote:
>> 
>>> +1 for the idea
>>> 
>>> other complementary ideas:
>>> - groupId is not really useful, plugins's artifactId is in general
>>> sufficient
>>> - I'd add goal name
>>> - dot separator, since this is the classical separator in every java
>>> logging
>>> implementations (due to the classical class name as logger pattern)
>>> - add prefix with something like "maven.", to separate maven logs from logs
>>> from other tools (probably organized by full class name)
>>> 
>>> then my preference would go to
>>> 
>>> maven.${artifactId}.${goal}
>>> 
>>> which is a "domain specific" pattern, not the classical full class name
>>> 
>>> (FYI, that' not the first time I use such "domain specific" logger name
>>> pattern,
>>> and I never had problems with such decision: yes, that's a bit not
>>> conventional but respects logging frameworks and is easy to understand)
>>> 
>>> Regards,
>>> 
>>> Hervé
>>> 
>>> Le jeudi 15 novembre 2012 14:18:46 Olivier Lamy a écrit :
>>>> Hi,
>>>> Currently logger for all mojos is the DefaultPluginManager logger.
>>>> So it's a bit hard to have filtering per plugin (i.e. only compiler in
>>>> debug etc..)
>>>> 
>>>> So I'd like to change that to be able to customize mojo logging.
>>>> My first is idea is mojo with logger name ${groupId}:${artifactId} (ie
>>>> org.apache.maven.plugins:maven-clean-plugin) so if you only want debug
>>>> for compiler put logger org.apache.maven.plugins:maven-compiler-plugin
>>>> to debug.
>>>> 
>>>> Makes sense ?
>>>> 
>>>> The code to change is here:
>>>> 
>>> https://github.com/olamy/maven-3/blob/log4j2/maven-core/src/main/java/org/ap
>>>> ache/maven/plugin/internal/DefaultMavenPluginManager.java#L445
>>>> 
>>>> WDYT ?
>>>> 
>>>> Thanks
>>>> --
>>>> Olivier Lamy
>>>> Talend: http://coders.talend.com
>>>> http://twitter.com/olamy | http://linkedin.com/in/olamy
>>>> 
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Thanks,

Jason

----------------------------------------------------------
Jason van Zyl
Founder & CTO, Sonatype
Founder,  Apache Maven
http://twitter.com/jvanzyl
---------------------------------------------------------

First, the taking in of scattered particulars under one Idea,
so that everyone understands what is being talked about ... Second,
the separation of the Idea into parts, by dividing it at the joints,
as nature directs, not breaking any limb in half as a bad carver might.

  -- Plato, Phaedrus (Notes on the Synthesis of Form by C. Alexander)





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