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 <commons-httpclient-dev@jakarta.apache.org>
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 <OF2D2CF27F.29B17AC3-ON80256E83.0048EFD7-80256E83.00492EBB@TDWH.co.uk>
To: "Commons HttpClient Project" <commons-httpclient-dev@jakarta.apache.org>
MIME-Version: 1.0
Subject: RE: customizing debugging levels per httpclient instance
From: Roland Weber <ROLWEBER@de.ibm.com>
Message-ID: 
 <OFA5A64F6E.F1DB975A-ONC1256E83.004A9419-C1256E83.004B09C3@de.ibm.com>
Date: Tue, 27 Apr 2004 15:39:03 +0200
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Hi Gareth,

thanks a lot for the pointer. The concept is very close to
what I need. The problem is that I'm not using log4j, since
the application uses a different logging framework. But
I might borrow the idea of attaching some context to the
thread in my application.

thanks again,
  Roland


Gareth_Davies@tdwh.co.uk
27.04.2004 15:20
Please respond to "Commons HttpClient Project"
 
        To:     "Commons HttpClient Project" 
<commons-httpclient-dev@jakarta.apache.org>
        cc: 
        Subject:        RE: customizing debugging levels per httpclient 
instance


Best solution I've come up with for this sort of thing is to use Nested
Diagnostic Context's (NDC) in log4j

have a look at the section on them in:
http://logging.apache.org/log4j/docs/manual.html

Not quite what you want I know, but it will give you something to grep on.

Gareth


             Roland Weber 
             <ROLWEBER@de.ibm. 
             com>                                                       To 

                                       "Commons HttpClient Project" 
             27/04/2004 14:12          <commons-httpclient-dev@jakarta.apa 

                                       che.org> 
                                                                        cc 

             Please respond to 
                 "Commons                                          Subject 

                HttpClient             RE: customizing debugging levels 
                 Project"              per httpclient instance 
             <commons-httpclie 
             nt-dev@jakarta.ap 
                 ache.org> 
 
 
Hi Oleg,

I had a similar problem when I started using HttpClient last year.
Not thread-based though. I'm in a servlet engine, so I don't know
which thread will be processing the request that uses HttpClient.
I'd like to have different log settings per HttpClient instance, but
that's not possible because they all use the same static loggers.

It's not a big issue for me now, since I have enough application
level tracing. But if someone has an idea how this problem could
be solved once and for all, it might be worth considering for 4.0.
Like creating a logger for each HttpClient instance instead of
each implementation class. Or falling back to the class logger
only if no instance logger is configured in the params.

cheers,
  Roland


"Kalnichevski, Oleg" <oleg.kalnichevski@bearingpoint.com>
26.04.2004 18:34
Please respond to "Commons HttpClient Project"

        To:     "Commons HttpClient Project"
<commons-httpclient-dev@jakarta.apache.org>
        cc:
        Subject:        RE: customizing debugging levels per httpclient
instance


Jorrit,

HttpClient relies on commons-logging toolkit to do all its logging. The
commons-logging itself is merely an abstraction layer intended to provide
a uniform interface to different logging toolkits. If there is a toolkit
capable of assigning different appenders on per thread basis, then
HttpClient can be configured to take advantage of it. To my best knowledge
Log4j cannot assign individual appenders to different threads within the
same application (within the same class loader context rather). You may
consider evaluating a different logging toolkit that provides such a
feature, or file a feature request with the Log4j project.


Oleg


-----Original Message-----
From: Jorrit Kronjee [mailto:httpclient@nospam.wafel.org]
Sent: Monday, April 26, 2004 13:19
To: commons-httpclient-dev@jakarta.apache.org
Subject: customizing debugging levels per httpclient instance


Hello,

I have an application consisting of two threads. Both threads have an

own instance of httpclient and use it for different things. I would like

to see the wire of one of the threads, but suppress the other. I use

log4j. log4j can set the debugging level (trace or not) based on

package/class names. I was wondering if it's possible to set the class

name for http client, so i can customize my debugging per thread. Or

perhaps I'm not understanding it correctly.

If this is not possible, I would like to make this a feature request.

Thanks in advance,


Jorrit Kronjee

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