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https://github.com/georgeyk/belogging

Easy and opinionated logging configuration for Python apps
https://github.com/georgeyk/belogging

library logging python3

Last synced: about 2 months ago
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Easy and opinionated logging configuration for Python apps

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Belogging
=========

*Don't fight with logging ...*

|TravisCI Build Status| |Coverage Status| |PyPI Version| |PyPI License| |PyPI latest|

----

Easy logging configuration based on environment variables.

Features:

* Set logging level using environment variable LOG_LEVEL (defaults to 'INFO')
* Set which loggers to enable using environment variable LOGGERS (defaults to '', everything)
* Always output to stdout
* Optional JSON formatter
* Completely disable logging setting LOG_LEVEL=DISABLED

Requirements:

* Python 3.5 and beyond

Install:

`pip install belogging`

Examples:
---------

Simple applications:
~~~~~~~~~~~~~~~~~~~~

.. code-block:: python

# my_script.py

import belogging
belogging.load()
# ^^ this call is optional, only useful for customization
# For example, to enable JSON output: belogging.load(json=True)

# belogging.getLogger is just a sugar to logging.getLogger, you can
# use logging.getLogger as usual (and recommended).
logger = belogging.getLogger('foobar')
logger.debug('test 1')
logger.info('test 2')

Executing:

.. code-block:: bash

# selecting LOG_LEVEL
$ LOG_LEVEL=DEBUG python my_script.py
# level=DEBUG message=test 1
# level=INFO message=test 2

# selecting LOGGERS
$ LOGGERS=foobar python my_script.py
# Both messages

# Both
$ LOGGERS=foobar LOG_LEVEL=INFO my_script.py
# only level=INFO message=test 2

Applications should call ```belogging.load()``` upon initialization.
The first ```__init__.py``` would be a good candidate, but anything before any call to
```logging``` module will be fine.

Django:
~~~~~~~

In your projects ```settings.py```:

.. code-block:: python

import belogging
# Disable django logging setup
LOGGING_CONFIG = None
belogging.load()

Inside your code, just use ```logging.getLogger()``` as usual.

.. code-block:: bash

$ export LOG_LEVEL=WARNING
$ ./manage.py runserver
# It will output only logging messages with severity > WARNING

Logging follows a hierarchy, so you easily select or skip some logging messages:

.. code-block:: bash

$ export LOGGERS=my_app.critical_a,my_app.critical_c,my_lib
$ ./my-app.py
# "my_app.critical_b messages" will be skipped
# all messages from my_lib will show up

.. |TravisCI Build Status| image:: https://travis-ci.org/georgeyk/belogging.svg?branch=master
:target: https://travis-ci.org/georgeyk/belogging
.. |Coverage Status| image:: https://coveralls.io/repos/github/georgeyk/belogging/badge.svg?branch=master
:target: https://coveralls.io/github/georgeyk/belogging?branch=master
.. |PyPI Version| image:: https://img.shields.io/pypi/pyversions/belogging.svg?maxAge=2592000
:target: https://pypi.python.org/pypi/belogging
.. |PyPI License| image:: https://img.shields.io/pypi/l/belogging.svg?maxAge=2592000
:target: https://pypi.python.org/pypi/belogging
.. |PyPI latest| image:: https://img.shields.io/pypi/v/belogging.svg?maxAge=2592000
:target: https://pypi.python.org/pypi/belogging