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# -*- coding: utf-8 -*-
# Copyright (C) 1998-2012 by the Free Software Foundation, Inc.
#
# This file is part of HyperKitty.
#
# HyperKitty is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# HyperKitty is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# HyperKitty. If not, see <http://www.gnu.org/licenses/>.
#
# Author: Aurelien Bompard <abompard@fedoraproject.org>
#
"""
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))
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))
def process_response(self, request, response):
if "kittystore.store" in request.environ:
# kittystore.store could be absent on automatic redirects for ex.
request.environ['kittystore.store'].commit()
#request.environ['kittystore.store'].close()
return response
def process_exception(self, request, exception):
request.environ['kittystore.store'].rollback()
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