swalkowski opened a new pull request, #29061:
URL: https://github.com/apache/airflow/pull/29061
To better open Airflow RBAC to external integrations (see below), this
change increases the maximum lengths of user identifies columns in `ab_user`
and `ab_register_user` tables:
- `first_name` and `last_name` from 64 to 256 characters.
- `email` and `username` from 256 to 512 characters.
While Airflow RBAC model is represented in the fixed set of Flask App
Builder `ab_*` tables, it can be integrated with a variety of authentication
mechanisms. They may operate on various forms of user identifiers that can be
of various lengths. For example:
- Display names like first and last name may not always be available, and
some integrations may opt for defaulting those columns to the other
identifiers, like username or email, which can be longer.
- Identity federation is a scenario in which user identifiers can be
particularly long, like this one from Google Cloud workload identity
federation:
`principal://iam.googleapis.com/projects/PROJECT_NUMBER/locations/global/workloadIdentityPools/POOL_ID/subject/SUBJECT_ATTRIBUTE_VALUE`.
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