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l : 28 August 2009 • 7:36AM -0400

Re: reading python logging from chainsaw
by Hari Krishna Dara


Thanks Scott. The attached file has sample log that has only one line
parsed correctly (log ID: 8), the rest have it wrong. Save this file
and use the below options for LogFilePatternReceiver:

fileURL: file:///c:/tmp/refresh_reporting.log
name: refresh_reporting

If you save to a different directory than c:\tmp, change it
accordingly. If you don't use windows, you may have to change the
number of slashes (not sure). Name can be anything.

I don't currently have the log that I generated with fixed width of 40
characters for thread name, but if you need that I can try to generate
it again (or change the attached log file to have a fixed width for
thread name). I expected that to parse better, but even the log ID: 8
didn't parse in that context.

-- Hari

On Sun, Aug 23, 2009 at 6:49 PM,
<log4j-user-digest-help@logg...> wrote:
> ---------- Forwarded message ----------
> From: Scott Deboy <scott.deboy@gmai...>
> To: Log4J Users List <log4j-user@logg...>
> Date: Fri, 21 Aug 2009 15:34:15 -0700
> Subject: Re: reading python logging from chainsaw
> If you can post a few lines of the log containing the example text that
> parses correctly and incorrectly, we can probably help you figure out what
> needs to be changed.
> Scott
> On Fri, Aug 21, 2009 at 3:13 PM, Hari Krishna Dara <haridara@gmai...>wrote:
> > I have been occasionally using chainsaw to analyze log files generated from
> > python. I use the LogFilePatternReceiver with a file:// url and it worked
> > fairly well for the python log format of "%(asctime)s %(name)-12s
> > %(levelname)-8s %(message)s" and chainsaw pattern of "TIMESTAMP LOGGER
> >
> > I am now trying to get it working with the threadname in the pattern, but
> > chainsaw doesn't seem to match the pattern properly. I changed the python
> > format to "%(asctime)s %(name)-12s %(threadName)s %(levelname)-8s
> > %(message)s" and chainsaw pattern to "TIMESTAMP LOGGER THREAD LEVEL
> > MESSAGE", however, chainsaw doesn't recognize the threadname in most of the
> > cases. In fact, it fails to recognize the level in most cases. It appears
> > as
> > though, when the level is INFO, I can see the threadname and level
> > recognized, otherwise, THREAD and LEVEL are clubbed into MSG.
> >
> > I then tried assigning fixed width to threadname (%(threadName)-40s), in
> > case that is what is causing the confusion, but this actually made it even
> > worse. Is there a way to fine tune how LogFilePatternReceiver recognizes
> > different fields in the log? May be a way to specify the field widths? I am
> > using v2. I would appreciate any help.
> >

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