LegacyEngineFacade migration issue (Trove)

[Hirotaka Wakabayashi]

Hello folks,

I'm trying to use oslo_db.sqlalchemy.enginefacade module in Trove project. Trove currently uses oslo_db.sqlalchemy.session.EngineFacade, which is the alias to LegacyEngineFacade.

I try to replace LegacyEngineFacade with enginefacade but that causes DuplicateOptError because Trove's library initially calls CONF.register_opts function with 'database' group and enginefacade also internally calls CONF.register_opts with 'database' group.

One of my suggestion to solve this problem is to register cfg options to the "database" group only if "database" group is not be registered. I will submit a trivial patch soon. Your advice is greatly appreciated.

Reference: My proposal ticket to use enginefacade instead of EngineFacade
https://storyboard.openstack.org/#!/story/2007498#comment-155528

Thanks in advance,
Hirotaka Wakabayashi

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/734744

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Hervé Beraud <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/oslo.db/+/734744
Reason: There has been no activity on this patch for some time. Apparently this is not really a problem with oslo.db, feel free to reopen it if needed.

Thanks for your understanding