diff options
Diffstat (limited to 'webapp/django/contrib/sessions/backends/cache.py')
-rw-r--r-- | webapp/django/contrib/sessions/backends/cache.py | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/webapp/django/contrib/sessions/backends/cache.py b/webapp/django/contrib/sessions/backends/cache.py new file mode 100644 index 0000000000..94ae448a1f --- /dev/null +++ b/webapp/django/contrib/sessions/backends/cache.py @@ -0,0 +1,50 @@ +from django.contrib.sessions.backends.base import SessionBase, CreateError +from django.core.cache import cache + +class SessionStore(SessionBase): + """ + A cache-based session store. + """ + def __init__(self, session_key=None): + self._cache = cache + super(SessionStore, self).__init__(session_key) + + def load(self): + session_data = self._cache.get(self.session_key) + if session_data is not None: + return session_data + self.create() + return {} + + def create(self): + while True: + self.session_key = self._get_new_session_key() + try: + self.save(must_create=True) + except CreateError: + continue + self.modified = True + return + + def save(self, must_create=False): + if must_create: + func = self._cache.add + else: + func = self._cache.set + result = func(self.session_key, self._get_session(no_load=must_create), + self.get_expiry_age()) + if must_create and not result: + raise CreateError + + def exists(self, session_key): + if self._cache.get(session_key): + return True + return False + + def delete(self, session_key=None): + if session_key is None: + if self._session_key is None: + return + session_key = self._session_key + self._cache.delete(session_key) + |