Migrate schema of a selected subset of models or datasources

[bajtos]

Suggestion

Allow the developers running npm run migrate to decide which datasources and/or which models to include in the migration.

Use Cases

When an application access multiple datasources, e.g. SQL system-of-record maintained by a different team + MongoDB database for front-edge, the migration script should update only datasources in control of the team building the application (MongoDB in my example).

When a LB3 application is mounted in LB4, we may want to skip migration of LB3 models, see the discussion in #3779.

Examples

• Specify a list of datasource names to migrate (a whitelist)
• Specify a list of datasource names to not migrate (a blacklist)
• Specify a list of model names to not migrate (a blacklist)
• Provide a filter function accepting a datasource name & a model name and deciding whether to migrate schema for this particular combination or not.

Please note that SchemaMigrationOptions already has a field to limit migration to a given list of model names.

/cc @derdeka

Acceptance criteria

TBD - will be filled by the team.

[stale]

This issue has been marked stale because it has not seen activity within six months. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository. This issue will be closed within 30 days of being stale.

[stale]

This issue has been closed due to continued inactivity. Thank you for your understanding. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository.