sessions.py 文件源码

def __init__(self):
        self.sid = None
        self.key = None
        self.session = None
        string_cookie = os.environ.get('HTTP_COOKIE', '')
        self.cookie = Cookie.SimpleCookie()
        self.cookie.load(string_cookie)

        # check for existing cookie
        if self.cookie.get(COOKIE_NAME):
            self.sid = self.cookie[COOKIE_NAME].value
            self.key = "session-" + self.sid
        self.session = memcache.get(self.key)
            if self.session is None:
               logging.info("Invalidating session "+self.sid)
               self.sid = None
               self.key = None

        if self.session is None:
            self.sid = str(random.random())[5:]+str(random.random())[5:]
            self.key = "session-" + self.sid
            logging.info("Creating session "+self.key);
            self.session = dict()
        memcache.add(self.key, self.session, 3600)

            self.cookie[COOKIE_NAME] = self.sid
            self.cookie[COOKIE_NAME]['path'] = DEFAULT_COOKIE_PATH
            # Send the Cookie header to the browser
            print self.cookie

    # Private method to update the cache on modification