On Fri, 25 Sep 2015 15:54:14 +0200, Thomas Neidhart wrote:
Hi Ole,

for a start, I think you are asking the wrong question.
First of all we need to agree that we want to add some kind of logging
facility to CM.
If the outcome is positive, there are a handful of alternatives, some of
them more viable than slf4j in the context of CM (e.g. JUL or
commons-logging).

Could someone summarize why those alternatives were deemed "more viable"?

btw. the same discussion has been done for other commons components as
well, and the result usually was: do not add logging

What was the rationale?


Gilles

Thomas


On Fri, Sep 25, 2015 at 3:17 PM, Ole Ersoy <ole.er...@gmail.com> wrote:

Hello,

We have been discussing various ways to view what's happening internally with algorithms, and the topic of including SLF4J has come up. I know that
this was discussed earlier and it was decided that CM is a low level
dependency, therefore it should minimize the transitive dependencies that it introduces. The Java community has adopted many means of dealing with
potential logging conflicts, so I'm requesting that we use SLF4J for
logging.

I know that JBoss introduced its own logging system, and this made me a bit nervous about this suggestion, so I looked up strategies for switching
their logger out with SLF4J:


http://stackoverflow.com/questions/14733369/force-jboss-logging-to-use-of-slf4j

The general process I go through when working with many dependencies that might use commons-logging instead of SLF4J looks something like this:


http://stackoverflow.com/questions/8921382/maven-slf4j-version-conflict-when-using-two-different-dependencies-that-requi

With JDK9 individual modules can define their own isolated set of
dependencies. At this point the fix should be a permanent. If someone has has a very intricate scenario that we have not yet seen, they could use
(And probably should use) OSGi to isolate dependencies.

WDYT?

Cheers,
- Ole


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