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From Ole Bulbuk <Ole.Bul...@ebp.de>
Subject BufferAppender and CyclicBuffer
Date Fri, 27 Sep 2002 08:04:24 GMT

I have downloaded Log4J 1.2.6 yesterday and have made a simple
BufferAppender. This is storing log events in a cyclic buffer and overwrites
the oldest log event when a new one is appended. The whole buffer and the
new message are forwarded to a subappender if the new log event has got a
priority that is high enough.

This means one won't get all the debug and info messages in the log (so the
log would keep small and clean) unless a log event with a priority that is
high enough (e.g. ERROR) occurs. Then the log will contain not only the
error itself but its history too.

The class has got only one small error:
If the size is decreased while the buffer is full the oldest messages remain
in the buffer instead of the newest ones. This is because
helper.CyclicBuffer is used internally.
I would be willing to change this if nobody objects. What is CyclicBuffer
used else for?

I would donate the BufferAppender to the project if you are interested.



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