[jira] Updated: (LOG4J2-27) log4j 2 should implement the SLF4J API directly

["Curt Arnold (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-27?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Curt Arnold updated LOG4J2-27:
------------------------------

    Attachment: jspwiki-log.pdf

PDF  version of OpenOffice document referenced in mailing list post.   Original appears to have been an attachment to an undisclosed JIRA issue for JSPWiki.

> log4j 2 should implement the SLF4J API directly
> -----------------------------------------------
>
>                 Key: LOG4J2-27
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-27
>             Project: Log4j 2
>          Issue Type: Wish
>          Components: API
>            Reporter: Curt Arnold
>         Attachments: jspwiki-log.pdf
>
>
> A PDF version of jspwiki-log.odf will be attached to this bug.
> On Dec 3, 2008, at 5:41 AM, Ceki Gulcu wrote on log4j-dev:
> Hello,
> As you are probably aware, more and more projects are adopting the
> SLF4J API.  I would venture say that SLF4J's adoption rate is roughly
> equivalent to that of log4j itself.  Although the SLF4J API is not
> perfect, most SLF4J users seem to be extremely happy with it.
> Harry Metske synthesized various logging paths in JSPWiki
> https://issues.apache.org/jira/secure/attachment/12394188/jspwiki-log.odp
> I was taken aback by the picture he paints. I think we as log4j
> committers owe it to Java developers to propose a saner logging model.
> Given the multiplicity of logging APIs in the Java world, I propose
> that log4j implement the SLF4J API directly. This can be done in the
> next version of log4j, say 1.3 or 2.0.
> Unfortunately, the adoption of the SLF4J API by log4j will be break
> 100% compatibility with existing log4j clients. More precisely,
> logging statements passing java.lang.Object as the message parameter
> will need to be changed to java.lang.String. Assuming that the
> proportion of logging statements using objects instead string is
> extremely small, comparatively few users will be affected. More
> importantly, in my experience, even very large projects can be
> migrated to the SLF4J API within half an hour.
> There is even a tool called slf4j-migrator to help with such
> migration [1].
> Is there support for my proposal?
> [1] http://www.slf4j.org/migrator.html

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