python rotating file handler callback

Question

I'm using the RotatingFileHandler (https://docs.python.org/2/library/logging.handlers.html) in Python to log messages - is there anyway to do a function callback when the RotatingFileHandler switches to a new file?

For example, I'm logging messages, and when the file rotates I want to process all of the messages using another defined function

Thanks!

sebastian · Accepted Answer · 2014-11-19 14:21:43Z

4

There's not really a callback, but you can easily subclass the RotatingFileHandler and override your own "rotation", by implementing the doRollover method:

MyFileHandler(RotatingFileHandler):

    def doRollover():
        # invoke the superclass' actual rotation implementation
        super(MyFileHandler, self).doRollover()

        # start doing your own tasks
        # ...

answered Nov 19, 2014 at 14:21

sebastian

9,71628 silver badges56 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Michael Over a year ago

that's a great solution! is there a way to get the file handle for the last closed file after the rollover?

sebastian Over a year ago

I'm pretty sure - though I don't really know the details of the RotatingFileHandler implementation. Have a look at the actual implementation: hg.python.org/cpython/file/23ab1197df0b/Lib/logging/… that may help...

Collectives™ on Stack Overflow

python rotating file handler callback

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related