On Jan 26, 2009, at 1:09 PM, Russell E Glaue wrote:

Additionally, Jetty 6 and 7 have support for log4j to implement application
logging. There does not seem to be any interest in replacing log4j with Logback.
One of the main reason appears to be that Logback is LGPL and not either APL or
EPL. I think this is a little weird, because all three licenses are GPL
compatible. So I am not understanding the reasoning why Logback could not
legally be used.

Although components using these various licenses can all be packaged and distributed together, they are not completely "compatible". See http://apache.org/legal/resolved.html.




However I do understand that in the move to Eclipse, the Jetty community is
steering clear of anything that might potentially give reason to slow down the
process of getting Jetty moved to Eclipse.

I think that after Jetty @ Eclipse has been established, there might be more
openness to adding additional third party library support to Jetty-core.


In the mean time, it is my belief that additional enterprise-worthy library
support (like Logback) can be requested to be added to Geronimo or other
upstream software implementations of Jetty-core.

My team here at the center is working on a GBean implementation of Logback's
RequestLogImpl class. After its completion, we are planning to contribute it to
Geronimo.



While Geronimo can use the SLF4J api, due to its licensing Logback can only be an optional component for any Apache project. So you can expect that the default implementation used would be log4j.

Ralph