This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.
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Project Description

django-cached_authentication_middleware is a drop in replacement for django.contrib.auth’s built in AuthenticationMiddleware. It tries to populate request.user by fetching user data from cache before falling back to the database.

Installation

  • Install via pypi:

    pip install django-cached_authentication_middleware
    
  • Configure CACHES in django’s settings.py:

    CACHES = {
        'default': {
            'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache',
            'LOCATION': '127.0.0.1:11211',
            'TIMEOUT': 36000,
        }
    }
    
  • Replace django.contrib.auth.middleware.AuthenticationMiddleware with cached_auth.Middleware in settings.py:

    MIDDLEWARE_CLASSES = (
        'django.middleware.common.CommonMiddleware',
        'django.contrib.sessions.middleware.SessionMiddleware',
        #'django.contrib.auth.middleware.AuthenticationMiddleware'
        'cached_auth.Middleware',
    )
    

And you’re done!

Cached Auth Preprocessor

Sometimes you want to preprocess to User instance before storing it into cache. cached_auth allows you to define settings.CACHED_AUTH_PREPROCESSOR, a callable that takes two arguments, user & request and returns a User instance.

A classic example of this would be to attach Profile data to User object so calling request.user.profile does not incur a database hit. Here’s how we can implement it.

def attach_profile(user, request):
    try:
        user.get_profile()
    # Handle exception for user with no profile and AnonymousUser
    except (Profile.DoesNotExist, AttributeError):
        pass
    return user


# In settings.py:
CACHED_AUTH_PREPROCESSOR = 'path.to.module.attach_profile'

Running Tests

To run the test suite:

python tests/runtests.py

To run the test suite with Django custom user (this will run only on Django 1.5):

python tests/runtests_custom_user.py

Changelog

Version 0.2.1

  • Better Django 1.8 compatibility.

Version 0.2.0

  • Added support for Django 1.5’s customer user model
  • Added CACHED_AUTH_PREPROCESSOR setting

Version 0.1.1

  • Fixed an error where middleware tries to call “get_profile” on AnonymousUser

Version 0.1

  • Initial release
Release History

Release History

0.2.1

This version

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0.2.0

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0.1.1

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0.1.0

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Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
django_cached_authentication_middleware-0.2.1-py2-none-any.whl (6.3 kB) Copy SHA256 Checksum SHA256 2.7 Wheel Jun 3, 2015
django-cached_authentication_middleware-0.2.1.tar.gz (4.4 kB) Copy SHA256 Checksum SHA256 Source Jun 3, 2015

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