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Posted to log4j-dev@logging.apache.org by "Ralph Goers (JIRA)" <ji...@apache.org> on 2012/10/02 21:59:07 UTC
[jira] [Resolved] (LOG4J2-13) Appenders, layouts, etc should
support deferred processing
[ https://issues.apache.org/jira/browse/LOG4J2-13?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ralph Goers resolved LOG4J2-13.
-------------------------------
Resolution: Fixed
Fix Version/s: 2.0-beta2
Assignee: Ralph Goers
LoggingEvents can be serialized and deserialized. AsynchAppender uses this to capture the logging event with all the information filled in to use on another thread. The logging event does not capture the stack trace, thread name, etc. until required. The logging event cannot be modified by the application once it is created. Attempts to update the ThreadContext Map and/or Stack in the logging event will result in an exception.
> Appenders, layouts, etc should support deferred processing
> ----------------------------------------------------------
>
> Key: LOG4J2-13
> URL: https://issues.apache.org/jira/browse/LOG4J2-13
> Project: Log4j 2
> Issue Type: Wish
> Reporter: Curt Arnold
> Assignee: Ralph Goers
> Fix For: 2.0-beta2
>
>
> Appenders, Layouts and the like that interact with LoggingEvent should support deferred processing.
> This can be accomplished by having a distinct extract() method where the object constructs a value object containing the info needed for later processing from the LoggingEvent and other context (such as current thread, stack trace). At some later time, this value object may be rendered to complete the layout etc. This approach eliminates the need to preemptively collect information such as stack trace that may not be used or to clone the LoggingEvent to isolate the layout or appender from external changes.
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