Add foreign key to region table in endpoint table

bp endpoint-table-is-missing-reference-to-region-table

Currently, Keystone has region table to model the region. The endpoint table is still storing the region name in it, rather than a foreign key reference.

This proposal is to make the endpoint table to reference the region table for the endpoint’s region.

Problem Description

Keystone has a region table for storing the region details, but it is not consumed in the endpoint table, in which region column is still having the name and not pointing to region_id as a foreign key.

Proposed Change

This change will require a data migration to reconcile existing endpoint records with records in the region table. The region column will be renamed to region_id. Existing region references in the endpoint table will need to have corresponding records created in the region table.

For backwards-compatibility with clients that are not creating region records prior to creating “regioned” endpoints, Keystone will need to automatically create regions.

Deleting a region with associated endpoints will fail with a HTTP 403 Forbidden.

Alternatives

None

Security Impact

None

Notifications Impact

None

Other End User Impact

None

Performance Impact

None

Other Deployer Impact

None

Developer Impact

None

Implementation

Assignee(s)

Primary assignee: - kanagaraj-manickam

Other contributors: - (none)

Work Items

1. Add required database migration as described in the “Proposed changes.”
2. Update the REST endpoint controller to take care of region as described in the “Proposed changes.”

Dependencies

None

Documentation Impact

None

References

None