https://issues.apache.org/bugzilla/show_bug.cgi?id=54078
Priority: P2
Bug ID: 54078
Assignee: log4j-dev@logging.apache.org
Summary: FlashbackAppender: new appender for lost events
Severity: enhancement
Classification: Unclassified
OS: Linux
Reporter: l.bolz...@gmail.com
Hardware: PC
Status: NEW
Version: unspecified
Component: Appender
Product: Log4j
Created attachment 29532
--> https://issues.apache.org/bugzilla/attachment.cgi?id=29532&action=edit
FlashbackAppender prototype
This is a proposal for a generic "appender decorator" that keeps messages that
are below the current logger level to print these "lost" events in case of
error.
The idea is that in case of error you need as much information as possible to
debug the problem and this it usually lost because the log level was too low.
If the problem is hard to reproduce you can not raise the log level after the
exception. Even if the problem it's easy to reproduce it could be a waste of
time or problematic for production environments.
This is a proof of concept. I used an appender, maybe there are better options.
Current implementation uses a couple of hacks to make the configuration as easy
as possible.
A lot of obvious features are missing (filters for trigger events, etc.).
I'm starting to use this in a stage/production environment to check its
effectiveness.
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