In Octane we do this by just raising the exception that is being handled in on_load_failure_callback: https://github.com/openstack/fuel-octane/blob/master/octane/handlers/__init__.py#L25
In Octane we do this by just raising the exception that is being handled in on_load_ failure_ callback: https:/ /github. com/openstack/ fuel-octane/ blob/master/ octane/ handlers/ __init_ _.py#L25