django-uw-keycloak 0.4

Middleware to allow authorization using Keycloak and Django

Django Keycloak Authorization

Middleware to allow authorization using Keycloak and Django for DRF and Graphene based projects. This package can only be used for projects started from scratch since they override the users management.

Installation

1. Add django_keycloak to the Django INSTALLED_APPS

2. Add django_keycloak.middleware.KeycloakMiddleware to the Django `MIDDLEWARE

3. Change Django AUTHENTICATION_BACKENDS to:

   AUTHENTICATION_BACKENDS = (
       'django_keycloak.backends.KeycloakAuthenticationBackend',
   )
   

4. Add the following to Django settings:

   KEYCLOAK_CONFIG = {
       'SERVER_URL': 'https://keycloak.staging.ubiwhere.com',
       'INTERNAL_URL': 'https://keycloak.staging.ubiwhere.com',
       'REALM': 'django',
       'CLIENT_ID': 'api',
       'CLIENT_SECRET_KEY': '0414b857-8430-4fbb-b86a-62bc398f37ea',
       'CLIENT_ADMIN_ROLE': 'admin',
       'REALM_ADMIN_ROLE': 'admin',
       'EXEMPT_URIS': [],
       'GRAPHQL_ENDPOINT': 'graphql/'
   }
   

5. Override the Django user model on settings:

   AUTH_USER_MODEL = "django_keycloak.KeycloakUser"
   

6. If using graphene add the GRAPHQL_ENDPOINT to settings and ``KeycloakGrapheneMiddleware to the grapheneMIDDLEWARE`

Django Admin

The Django superuser that can be used for the Django Admin login, must created with the normal management command python manage.py createsuperuser. But first you must create this user on keycloak and set a client admin role and realm admin role like the CLIENT_ADMIN_ROLE and REALM_ADMIN_ROLE that were added on settings previously.

Django Rest Framework

In the Django settings the the Rest Framework settings can't have any Authorization values (used in other projects). Example:

```json
# Rest framework settings
REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.LimitOffsetPagination',
    'PAGE_SIZE': 100,  # Default to 20
    'PAGINATE_BY_PARAM': 'page_size',
    # Allow client to override, using `?page_size=xxx`.
    'MAX_PAGINATE_BY': 100,
    # Maximum limit allowed when using `?page_size=xxx`.
    'TEST_REQUEST_DEFAULT_FORMAT': 'json'
}
```

DRY Permissions

The permissions must be set like in other projects. You must the the permissions configuration for each model. Example:

```json
@staticmethod
@authenticated_users
def has_read_permission(request):
    roles = request.remote_user.get('client_roles')

    return True if 'ADMIN' in roles else False
```

Keycloak users synchronization

The management command sync_keycloak_users must be ran periodically. In order to remove from the local users the ones that are no longer available at keycloak. This command can be called using the task named sync_users_with_keycloak, using celery. Fot that you just need to:

• Add the task to the CELERY_BEAT_SCHEDULE ìns Django settings:

  CELERY_BEAT_SCHEDULE = {
      'sync_users_with_keycloak': {
          'task': 'django_keycloak.tasks.sync_users_with_keycloak',
          'schedule': timedelta(hours=24),
          'options': {'queue': 'sync_users'}
      },
  }
  

• Add the sync_users queue to the docker-compose celery service:

  command: celery worker -A citibrain_base -B -E -l info -Q backup,celery,sync_users --autoscale=4,1

Attention: This task is only responsible to delete users from local storage. The creation of new users, that are on keycloak, is done when they try to login.