def __init__(self, session_secret, session_timeout, session_path = None, session_id_key = 'SESSION_ID', session_verify_key = 'VERIFICATION'):
self.session_secret = session_secret
self.session_timeout = session_timeout
self.session_id_key = session_id_key
self.session_verify_key = session_verify_key
import tempfile
session_path = session_path or tempfile.gettempdir()
if not os.path.isdir(session_path):
raise SessionPathNotExists('session path not exist')
self.session_path = session_path
self.SESSION_PREFIX = '_glab_sess_'
from gale.utils import ShareDict
self.__file_map = ShareDict() # 文件的访问时间记录到一张hash表中去
self.__made_file_map(self.__file_map)
class FileSessionManager(ISessionManager):
"""这是使用文件来实现的seession机制"""
lock = threading.RLock()
def __init__(self, session_secret, session_timeout, session_path = None, session_id_key = 'SESSION_ID', session_verify_key = 'VERIFICATION'):
self.session_secret = session_secret
self.session_timeout = session_timeout
self.session_id_key = session_id_key
self.session_verify_key = session_verify_key
import tempfile
session_path = session_path or tempfile.gettempdir()
if not os.path.isdir(session_path):
raise SessionPathNotExists('session path not exist')
self.session_path = session_path
self.SESSION_PREFIX = '_glab_sess_'
from gale.utils import ShareDict
self.__file_map = ShareDict() # 文件的访问时间记录到一张hash表中去
self.__made_file_map(self.__file_map)
def __made_file_map(self, file_map):
import glob
for session_file in glob.glob(os.path.join(self.session_path, self.SESSION_PREFIX) + '*'):
_stat = os.stat(session_file)
if time.time() > _stat.st_atime + self.session_timeout:
os.remove(session_file)
else:
file_map[session_file] = _stat.st_atime
def __update_file_map(self, session_file):
for session_file, session_atime in self.__file_map.items():
if time.time() > session_atime + self.session_timeout:
os.remove(session_file)
del self.__file_map[session_file]
self.__file_map[session_file] = time.time() # 把刚访问的那个文件在表中的访问日期也更新掉
def _fetch(self, session_id):
session_file = os.path.join(self.session_path,
'%s%s' % (self.SESSION_PREFIX, session_id))
self.__update_file_map(session_file) # 每次有访问信息进来的，就去检查下hash表
try:
with open(session_file, 'rb') as session_fd:
session_data = json.loads(session_fd.read())
except IOError:
return {}
return isinstance(session_data, dict) and session_data or {}
def save_session(self, session):
session_file = os.path.join(self.session_path,
'%s%s' % (self.SESSION_PREFIX, session.session_id))
session_data = json.dumps(dict(session.items()))
with self.lock:
with open(session_file, 'wb') as session_fd:
session_fd.write(session_data)
def remove_session(self, session):
session_file = os.path.join(self.session_path,
'%s%s' % (self.SESSION_PREFIX, session.session_id))
del session
if os.path.exists(session_file):
os.remove(session_file)
