Revoking stale permissions breaks DAG import

[RostD]

Apache Airflow Provider(s)

fab

Versions of Apache Airflow Providers

apache-airflow-providers-fab==1.4.0

Apache Airflow version

2.9.3

Operating System

Oracle Linux Server 8.10

Deployment

Virtualenv installation

Deployment details

No response

What happened

In DAG I use the "old" format of the access_control parameter. "DAG Import Errors" appears in the web interface when revoking stale permissions

Traceback(most recent call last):
  File "/opt/venv/lib64/python3.11/site-packages/airflow/providers/fab/auth_manager/security_manager/override.py", line 1128, in sync_perm_for_dag
    self._sync_dag_view_permissions(dag_id, access_control.copy())
  File "/opt/venv/lib64/python3.11/site-packages/airflow/providers/fab/auth_manager/security_manager/override.py", line 1175, in _sync_dag_view_permissions
    target_perms_for_role = access_control.get(role.name, {}).get(resource_name, set())
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'set' object has no attribute 'get'

What you think should happen instead

According to the provider's documentation, it supports the old format, I think its support should be added

How to reproduce

In DAG use the "old" format of the access_control parameter: with DAG( ... access_control={'BASIC_ROLE': {'can_read', 'can_edit', 'can_delete'}, 'BASIC_ROLE_VIEW': {'can_read'}}, ... )

Wait until all permissions are added. Then remove can_delete permission, then when revoking obsolete permissions fab crashes and DAG Import Errors message appears in web interface

Anything else

No response

Are you willing to submit PR?

• [ ] Yes I am willing to submit a PR!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[boring-cyborg[bot]]

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[potiuk]

Can. you take a look @joaopamaral ? It looks legit.