[jira] [Created] (LOG4J2-321) Provide configuration alternative to system properties

["Remko Popma (JIRA)" <ji...@apache.org>]

Remko Popma created LOG4J2-321:
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             Summary: Provide configuration alternative to system properties
                 Key: LOG4J2-321
                 URL: https://issues.apache.org/jira/browse/LOG4J2-321
             Project: Log4j 2
          Issue Type: Bug
    Affects Versions: 2.0-beta8
            Reporter: Remko Popma
             Fix For: 2.0-beta9


Some components behaviour cannot be configured in the configuration file but only with System properties. There is a strong preference to ensure all behaviour can be configured in the configuration file.

Properties that can be used to configure AsyncLoggers when all loggers are Async:
* Log4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
* AsyncLogger.ExceptionHandler
* AsyncLogger.RingBufferSize
* AsyncLogger.WaitStrategy
* log4j.Clock - currently only used for timestamping RingBufferLogEvents. 

Question: Should all LogEvents use this clock?

The following system properties can be used to configure mixed Async Loggers:
* AsyncLoggerConfig.ExceptionHandler	
* AsyncLoggerConfig.RingBufferSize
* AsyncLoggerConfig.WaitStrategy

For JMX there is only the one "disable" property, in the mailing list it was suggested to make this into an element rather than an attribute to future-proof it.

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