user.py 文件源码

def delete(self, usernames):
        """Delete L{User}s matching C{username}s.

        @param usernames: A sequence of L{User.username}s.
        @raise FeatureError: Raised if no L{User.username}s are provided.
        @raise UnknownUserError: Raised if one or more usernames don't match
            existing L{User}s.
        @return: A  C{list} of C{(objectID, User.username)} 2-tuples
            representing the L{User}s that that were removed.
        """
        if isgenerator(usernames):
            usernames = list(usernames)
        if not usernames:
            raise FeatureError('At least one username must be provided.')

        usernames = set(usernames)
        result = getUsers(usernames=usernames)
        existingUsernames = set(result.values(User.username))
        unknownUsernames = usernames - existingUsernames
        if unknownUsernames:
            raise UnknownUserError(list(unknownUsernames))

        admin = getUser(u'fluiddb')
        deletedUsers = list(result.values(User.objectID, User.username))
        # FIXME: Deleting a user will leave the permission exception lists
        # containing the user in a corrupt state.
        result.remove()
        self._factory.tagValues(admin).delete(
            [(objectID, systemTag) for objectID, _ in deletedUsers
             for systemTag in [u'fluiddb/users/username',
                               u'fluiddb/users/name',
                               u'fluiddb/users/email',
                               u'fluiddb/users/role']])
        return deletedUsers