Add `allowed_run_types` parameter to Dag class

[eladkal]

Body

Some workflows are designed to be purely automatic. We should allow the capability for DAG author to declare DAG as scheduled run only. This means:

1. Create manual run button from the UI will generate error / be disabled.
2. Create manual run from API will generate error.
3. Scheduler will not run tasks of manual DagRuns if the parameter is set.

To allow flexibility I'm proposing the allowed_run_types should be enum ['Scheduled', 'Backfill', 'Manual'] where user choose what to set. Thus we need to define the set of allowed rules per type.

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[jason810496]

Hi @eladkal, I can work on this issue, could you assign to me ? Thanks !
I also have a question: Does this mean that allowed_run_types should accept DagRunType instead of creating a new enum class in the models.dag module?

[potiuk]

To allow flexibility I'm proposing the allowed_run_types should be enum ['Scheduled', 'Backfill', 'Manual'] where user choose what to set. Thus we need to define the set of allowed rules per type.

I have a feeling that this one might be somewhat impacted by decision on what we do here https://cwiki.apache.org/confluence/display/AIRFLOW/AIP-83+amendment+to+support+classic+Airflow+authoring+style - that seems very much related.

[potiuk]

So probably we should wait until decision for this one happens

[eladkal]

duplicate of #40990