checkers.py 文件源码

def requestAvatarId(self, credentials):
        """
        Return the avatar id of the avatar which can be accessed using the
        given credentials.

        credentials will be an object with username and password tags.  We
        need to raise an error to indicate failure or return a username to
        indicate success.  requestAvatar will then be called with the
        avatar id we returned.
        """
        try:
            session = yield self.facadeClient.authenticateUserWithPassword(
                credentials.username, credentials.password)
        except (TPasswordIncorrect, TNoSuchUser):
            unauthorizedLogin = error.UnauthorizedLogin('Invalid credentials')
            log.msg('Bad credentials: %r:%r' %
                    (credentials.username, '<sanitized>'))
            raise unauthorizedLogin
        except Exception, e:
            log.msg('requestAvatarId exception authenticating %r/%r.' %
                    (credentials.username, '<sanitized>'))
            log.err(e)
            raise
        else:
            defer.returnValue(session)