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"""
WSGI and Django middlewares for KittyStore
Inspired by http://pypi.python.org/pypi/middlestorm
"""
from threading import local
from django.conf import settings
import kittystore
class KittyStoreWSGIMiddleware(object):
"""WSGI middleware.
Add KittyStore object in environ['kittystore.store']. Each thread contains
own store.
"""
def __init__(self, app):
"""Create WSGI middleware.
:param app: top level application or middleware.
:param database: instance of Database returned create_database.
"""
self._app = app
self._local = local()
def __call__(self, environ, start_response):
try:
environ['kittystore.store'] = self._local.store
except AttributeError:
environ['kittystore.store'] = \
self._local.__dict__.setdefault('store',
kittystore.get_store(settings.KITTYSTORE_URL,
settings.KITTYSTORE_DEBUG))
try:
return self._app(environ, start_response)
finally:
environ['kittystore.store'].rollback()
#environ['kittystore.store'].close()
class KittyStoreDjangoMiddleware(object):
"""Django middleware.
Add KittyStore object in environ['kittystore.store']. Each thread contains
own store.
"""
def __init__(self):
"""Create Django middleware."""
self._local = local()
def process_request(self, request):
try:
request.environ['kittystore.store'] = self._local.store
except AttributeError:
request.environ['kittystore.store'] = \
self._local.__dict__.setdefault('store',
kittystore.get_store(settings.KITTYSTORE_URL,
settings.KITTYSTORE_DEBUG))
#def process_response(self, request, response):
# request.environ['kittystore.store'].close()
# return response
def process_exception(self, request, exception):
request.environ['kittystore.store'].rollback()
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