appengine.py 文件源码

def load_auth_tokens(user=None):
    """Reads a dictionary of the current user's tokens from the datastore.

    If there is no current user (a user is not signed in to the app) or the user
    does not have any tokens, an empty dictionary is returned.
    """
    if user is None:
        user = users.get_current_user()
    if user is None:
        return {}
    pickled_tokens = memcache.get('gdata_pickled_tokens:%s' % user)
    if pickled_tokens:
        return pickle.loads(pickled_tokens)
    user_tokens = TokenCollection.all().filter('user =', user).get()
    if user_tokens:
        memcache.set('gdata_pickled_tokens:%s' % user, user_tokens.pickled_tokens)
        return pickle.loads(user_tokens.pickled_tokens)
    return {}