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From "James Wilkinson" <jwe...@gmail.com>
Subject Re: log4net duplicate filtering
Date Wed, 08 Aug 2007 11:40:24 GMT
ah, gmail being cleverer than me and making a link without asking me - the
text is right, just the link got out of sync with reality somehow. Here it
is again...

http://www.idiots.org.uk/log4net/DupeFilteringForewardingAppender_08-08-07.txt



On 8/8/07, Ron Grabowski <rongrabowski@yahoo.com> wrote:
>
>
> HTTP 404 - File not found
> ----- Original Message ----
>
> From: James Wilkinson <jwexqm@gmail.com>
>
> To: Log4NET User <log4net-user@logging.apache.org>
>
> Cc: "jerry.shea@gmail.com" <jerry.shea@gmail.com>
>
> Sent: Wednesday, August 8, 2007 4:43:24 AM
>
> Subject: log4net duplicate filtering
>
>
>
> Hi,
>
>
>
> I wanted to post the code I'd written for duplicate filtering a couple of
> weeks ago, but got distracted with some other work. After noticing the
> recent messages about duplicate filtering, I just figured that posting it in
> its current state might be of use to people.
>
>
>
> It's a modified forwarding appender that does duplicate event filtering
> with a summary message inserted after the series of duplicate events has
> completed. I started off trying to implement it as a filter, but hit the
> problem of not being able to insert the summary message into the stream.
>
>
>
> here's the source...
>
>
> http://www.idiots.org.uk/log4net/DupeFilteringForewardingAppender_08-08-07.txt
>
>
>
> Typical usage would be something like this...
>
>
>
>   <!-- use this forwarding appender as a dupe filter which then passes on
> to the console -->
>
>   <appender name="DupeFilteringForwardingAppender" type="
> log4net.Appender.DupeFilteringForwardingAppender " >
>
>     <appender-ref ref="ConsoleAppender" />
>
>     <FlushTimeout value="3" />
>
>   </appender>
>
>
>
> FlushTimeout (integer seconds) - see the comment in the source for the
> public property for how this works.
>
>
>
> There are a whole load of things I'm not really sure I've done very well.
> The name of the thing for a start. The message fingerprinting might be more
> efficiently done as a checksum and from what I know, I think the reliance on
> the .net  2.0 generic-based list probably isn't in the spirit of the
> log4net coding standards. The hard-coded way that event fingerprints are
> built up feels like it needs thought. Anyway, it's maybe a start.
>
>
>
> Also, thanks to Peter for clearing up my misconception about log4net
> plugins.
>
>
>
> James
>
>
>
>
>
>
>
>
>
>

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