o/ This is a heads up to the maintainers of the aforementioned projects that the oslo team are planning to remove the 'oslo_db.sqlalchemy.enginefacade.LegacyEngineFacade' class and related 'get_legacy_facade' helpers this cycle. The legacy engine facade pattern has been deprecated since 2015 and we want to get rid of it to reduce load on the overburdened oslo maintainers. The prefered alternative is to rely on oslo.context RequestContext-based session management. The work required to migrate can be quite significant depending on how large your DB API is but it is pretty trivial. This issue has already been fixed in a couple of projects. These can be used as blueprints for fixing the remaining affected projects: * cinder (https://review.opendev.org/q/topic:remove-legacyfacade) * nova (https://review.opendev.org/q/topic:bp%252Fnew-oslodb-enginefacade) We expect this one to take affected projects a while to resolve, so we won't remove this module until near the end of the cycle. However, this thing really needs to be removed sooner rather than later. Please let us know if you have any concerns or if the above changes are not sufficient as a guide for how to address these issues. Cheers, Stephen