On Wed, Nov 16, 2011 at 2:27 PM, Don Dwiggins <ddwigg...@advpubtech.com>wrote:
> **
> On 11/15/2011 8:57 AM, Christopher Armstrong wrote:
>
> If you pass a 'system' kwarg to log.msg then it will go in that field.
>
> log.msg("hi", system="stuff") results in <date> [stuff] hi
>
>
> This triggered me to look further into what LogPublisher.msg does, since
> I've long wanted to customize the format of the output. I found what I
> wanted in
> http://twistedmatrix.com/documents/current/api/twisted.python.log.ILogObserver.html:
>
> In msg(), the message gets added to the kwargs dictionary (along with a
> timestamp called 'time'), and that dict is passed to LogObserver.emit,
> which uses textFromEventDict() to create what's actually output. This
> dictionary has the following keys recognized by textFromEventDict:
>
> - message: A tuple of str containing messages to be logged.
> - system: A str which indicates the "system" which is generating this
> event.
> - isError: A bool indicating whether this event represents an error.
> - failure: A
> failure.Failure<http://twistedmatrix.com/documents/current/api/twisted.python.failure.Failure.html>instance,
> required
> if the event is an error.
> - why: Used as header of the traceback in case of errors.
> - format: A string format used in place of message to customize the
> event. The intent is for the observer to format a message by doing
> something like format % eventDict.
>
> So, for example, you could do log.msg(format='....', foo='stuff',
> bar='things')
>
> I suggest that this be added to the documentation string of the msg()
> method and
> http://twistedmatrix.com/documents/current/core/howto/logging.html.
>
>
> --
>
> Don Dwiggins
> Advanced Publishing Technology
>
>
>
Please open a ticket for this, so it doesn't get lost.
Thx.
Kevin Horn
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