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Database Migration Strategy
What happens on a model change?
If a model is changed and this change is committed to the repo, a Jenkins job will vote against the change until a migration file for this change is also uploaded.
Similar to Neutron migration strategy a script for auto generation is used: Neutron Script Auto-generation The big difference is that Proton will have a YAML model. So a new auto generate script is needed.
Migration Process
The migrations in the alembic/versions contain the changes needed to migrate from older Neutron releases to newer versions. A migration occurs by executing a script that details the changes needed to upgrade the database. The migration scripts are ordered so that multiple scripts can run sequentially to update the database.
The migration process is done in the exact same way as the Neutron database migration. See details in the devref: Neutron Database Migration
Testing
Unit test need to be written to verify the changed model. This unit test will be triggered by a Jenkins job and vote on the commit which changes the model.