credentials.py 文件源码

def _get_role_config_values(self):
        # This returns the role related configuration.
        profiles = self._loaded_config.get('profiles', {})
        try:
            source_profile = profiles[self._profile_name]['source_profile']
            role_arn = profiles[self._profile_name]['role_arn']
            mfa_serial = profiles[self._profile_name].get('mfa_serial')
        except KeyError as e:
            raise PartialCredentialsError(provider=self.METHOD,
                                          cred_var=str(e))
        external_id = profiles[self._profile_name].get('external_id')
        role_session_name = \
            profiles[self._profile_name].get('role_session_name')
        if source_profile not in profiles:
            raise InvalidConfigError(
                error_msg=(
                    'The source_profile "%s" referenced in '
                    'the profile "%s" does not exist.' % (
                        source_profile, self._profile_name)))
        source_cred_values = profiles[source_profile]
        return {
            'role_arn': role_arn,
            'external_id': external_id,
            'source_profile': source_profile,
            'mfa_serial': mfa_serial,
            'source_cred_values': source_cred_values,
            'role_session_name': role_session_name
        }