service_account.py 文件源码

def _create_token(self, additional_claims=None):
        now = _UTCNOW()
        expiry = now + datetime.timedelta(seconds=self._MAX_TOKEN_LIFETIME_SECS)
        payload = {
            'iat': _datetime_to_secs(now),
            'exp': _datetime_to_secs(expiry),
            'iss': self._service_account_email,
            'sub': self._service_account_email
        }
        payload.update(self._kwargs)
        if additional_claims is not None:
            payload.update(additional_claims)
        jwt = crypt.make_signed_jwt(self._signer, payload,
                                    key_id=self._private_key_id)
        return jwt.decode('ascii'), expiry