Utilities to use Cassandra with Django
# PCassandra - Pico Cassandra utilities for Django
… because nano is too much, but femto is not enough :-P
- store User on Cassadra (custom auth backend) - see KNOWN ISSUES
- store Session on Cassandra (custom session store) - see KNOWN ISSUES
- configure cqlengine connection parameters from your settings
- management commands to create keyspace and sync models (auth, session)
- management commands to create user and superusers
- a WSGI middleware to setup cqlengine on development server
Since Django’s auth & session backends are by design heavyly coupled with models, the backends included here are basically and copy & paste of Django, adapted for the API of cqlengine models.
### Developed and tested with
- Python 3.4
- Django 1.8.3
- cassandra-driver 2.6.0
- Cassandra 2.1.8
$ pip install pcassandra
PCassandra adds 2 new settings variables:
CASSANDRA_CONNECTION: see connection.py
PCASSANDRA_AUTH_USER_MODEL = 'pcassandra.dj18.auth.models.CassandraUser'
And you’ll need to override some defaults values with:
AUTHENTICATION_BACKENDS = `['pcassandra.dj18.auth.backend.ModelBackend']
AUTH_USER_MODEL = 'pcassandra.DjangoUserProxy'
SESSION_ENGINE = 'pcassandra.dj18.session.backend'
WSGI_APPLICATION: see wsgi.py for recommended setup
- Auth: add unittest of user model / auth backend
- Auth: implement user’s permissions
- Auth: create management command to change user passwords
- Auth: update last login - DjangoUserProxy.save()
- Auth: update password hash - EmulatedAbstractBaseUser.check_password()
- Session: add unittest of session model / backend
- Session: implement ‘clear_expired()’
- Both: document the ugliest parts, and create unittests for them
- generate docs
- investigate if there is some way to execute Django’s unittests against this implementations
## KNOWN ISSUES
- User model DOES NOT implements permissions api. Superusers have all the permissions, and non-superusers have no permissions.
- Session model and session backend is not tested at all
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