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From "Matt Sicker (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LOG4J2-577) Refactor LoggerContext initialization/destruction code
Date Mon, 24 Mar 2014 15:30:43 GMT
Matt Sicker created LOG4J2-577:
----------------------------------

             Summary: Refactor LoggerContext initialization/destruction code
                 Key: LOG4J2-577
                 URL: https://issues.apache.org/jira/browse/LOG4J2-577
             Project: Log4j 2
          Issue Type: Task
          Components: Configurators, Core
    Affects Versions: 2.0-rc1
         Environment: Standard JRE, servlet context, and extensible for other containers like
OSGi
            Reporter: Matt Sicker
            Assignee: Matt Sicker


Currently, the code for initialization is a bit scattered due to the servlet context initialization
being added far later than the core stuff. The LoggerContext initialization code needs to
be refactored to allow drop-in implementations based on the usage context. For example, the
default init/destroy path is based in the LoggerContextFactory a shutdown hook thread to stop
it. The web context uses a ServletContextListener (or more specifically, the web initialization
class) to construct and destroy the LoggerContext. An OSGi bundle might wish to use a BundleActivator
to start and stop the LoggerContext. There may be other usage scenarios not covered such as
in an EJB, etc.

The code for selecting a context is already modular in this way via the ContextSelector interface.
I'd like to see something similar for the starting and stopping of a LoggerContext. See, for
example, how it's done in logback (or slf4j if that's where it's implemented) or other logging
frameworks (if any alternatives really exist).



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