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Re: Getting a TimedRotatingFileHandler not to put two dates in the same file?

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  Re: Getting a TimedRotatingFileHandler not to put two dates in the same file? Dave Angel <d@davea.name> - 2012-10-23 19:46 -0400

#31975 — Re: Getting a TimedRotatingFileHandler not to put two dates in the same file?

On 10/23/2012 11:23 AM, David M Chess wrote:
> We have a TimedRotatingFileHandler with when='midnight'

You give us no clue what's in this class, or how it comes up with the
filenames used.

> . 
>
> This works great, splitting the log information across files by date, as 
> long as the process is actually up at midnight.
>
> But now the users have noticed that if the process isn't up at midnight, 
> they can end up with lines from two (or I guess potentially more) dates in 
> the same log file.
>
> Is there some way to fix this, either with cleverer arguments into the 
> TimedRotatingFileHandler, or by some plausible subclassing of it or its 
> superclass?

Why not use the date itself to derive the filename?  And check whether
the date has changed since the last update, and if so, close and
reopen.  Midnight is irrelevant.

> Or am I misinterpreting the symptoms somehow?
>
> Tx much!
> DC
>
>

-- 

DaveA

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