BTW folks, The lack of a sequence numbers in the LoggingEvent. We see
this as an increasingly important issue in todays world of highly
concurrent HW and ever increasing clock rates. There are A LOT of
milliseconds (Log4Js time resolution) in a nanosecond.
Cheers
Paul Duffy wrote:
Thanks Scott,
We're using 1.2.13 and hoping to solve the sequence number issues with
a currently available extension mechanisms.
Couple Qs...
1. The receivers package does not seem to be released yet? We can't
find the downloads.
http://logging.apache.org/log4j/companions/receivers/download.html
2. From an example we found, it seems that you need to add
RewriteAppender to each logger? Is there sample code somewhere we
might examine?
Cheers
Scott Deboy wrote:
If I recall there was a sequence number added to loggingevent in the
1.3 codebase, but that was taken out a while ago.
You can modify logging events before they're processed by appenders
by using the org.apache.log4j.rewrite package in the 'receivers'
companion.
Create your own rewritepolicy implementation which adds a sequence
number property to each loggingevent, and then specify a
rewriteappender which references your rewritepolicy implementation
and delegates to a regular appender.
http://logging.apache.org/log4j/companions/receivers/apidocs/index.html
http://svn.apache.org/viewvc/logging/log4j/companions/receivers/trunk/src/main/java/org/apache/log4j/rewrite/
Scott Deboy
COMOTIV SYSTEMS
111 SW Columbia Street Ste. 950
Portland, OR 97201
Telephone: 503.224.7496
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www.comotivsystems.com
-----Original Message-----
From: Paul Duffy [mailto:[EMAIL PROTECTED]
Sent: Wed 12/5/2007 7:29 PM
To: Log4J Users List
Subject: Sequence numbers for LoggingEvents
Folks,
I have an application that is likely to produce LoggingEvents on
identical millisecond epochs. Thus I also need a sequence number to
unambiguously determine event order.
Is there any facility by which I can also include a montonically
increasing sequence number in the event? I went back through the
archives...seems some work was started here for 1.3, but was stopped?
Cheers
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