simplistix / errorhandler

This is a handler for the python standard logging framework that can be used to tell whether messages have been logged at or above a certain level.

ErrorHandler

This is a handler for the python standard logging framework that can be used to tell whether messages have been logged at or above a certain level.

This can be useful when wanting to ensure that no errors have been logged before committing data back to a database.

As an example, first, you set up the error handler:

>>> from errorhandler import ErrorHandler
>>> e = ErrorHandler()

Then you can log and check the handler at any point to see if it has been triggered:

>>> e.fired
False
>>> from logging import getLogger
>>> logger = getLogger()
>>> logger.error('an error')
>>> e.fired
True

You can use the fired attribute to only perform actions when no errors have been logged:

>>> if e.fired:
...   print "Not updating files as errors have occurred"
Not updating files as errors have occurred

Installation

Do the following in your virtualenv:

pip install errorhandler

Documentation

The latest documentation can also be found at: http://errorhandler.readthedocs.org/en/latest/

Licensing

Copyright (c) 2008-2015 Simplistix Ltd, 2016 Chris Withers. See docs/license.txt for details.

errorhandler's Issues

errorhandler disables default logging output to stderr

Great package! It does exactly what I needed. This repo took me a while to find, but it's an honor to be the first user to star it! The use case it solves seems like it should be pretty common, especially with the growing use of continuous integration builds. I answered a StackOverflow question with this package.

I'm adding errorhandler to our project in manubot/manubot#2. One thing that confused me at first was that adding error handler suppressed the default logging to stderr. I'm not sure whether this is intentional or a bug. Anyways, here's the code I used to get the stderr logging back:

error_handler = errorhandler.ErrorHandler()
logger = logging.getLogger()
logger.setLevel(getattr(logging, args.log_level))
stream_handler = logging.StreamHandler(stream=sys.stderr)
logger.addHandler(stream_handler)

Is this the simplest workaround?