def _get_session(self):
"""
Get the user's session from the datastore
"""
query = UserSession.all()
query.filter("sid", self.sid)
if self.check_user_agent:
query.filter("ua", os.environ["HTTP_USER_AGENT"])
if self.check_ip:
query.filter("ip", os.environ["REMOTE_ADDR"])
results = query.fetch(1)
if len(results) is 0:
return None
else:
sessionAge = datetime.datetime.now() - results[0].last_activity
if sessionAge.seconds > self.session_expire_time:
results[0].delete()
return None
return results[0]
def _clean_old_sessions(self):
"""
Delete expired sessions from the datastore.
This is only called for CLEAN_CHECK_PERCENT percent of requests because
it could be rather intensive.
"""
duration = datetime.timedelta(seconds=self.session_expire_time)
session_age = datetime.datetime.now() - duration
query = UserSession.all()
query.filter("last_activity <", session_age)
results = query.fetch(1000)
for result in results:
data_query = UserSessionData.all()
query.filter("session", result)
data_results = data_query.fetch(1000)
for data_result in data_results:
data_result.delete()
memcache.delete("sid-" + str(result.key()))
result.delete()
def delete_all_sessions(self):
"""
Deletes all sessions and session data from the data store and memcache.
"""
all_sessions_deleted = False
all_data_deleted = False
while not all_sessions_deleted:
query = UserSession.all()
results = query.fetch(1000)
if len(results) is 0:
all_sessions_deleted = True
else:
for result in results:
result.delete()
while not all_data_deleted:
query = UserSessionData.all()
results = query.fetch(1000)
if len(results) is 0:
all_data_deleted = True
else:
for result in results:
result.delete()