Add partition_date to dag run and let the DagRun class tell us the DagRunInfo

[dstandish]

Body

    # todo: AIP-76 let's add partition_date to dag run
    #  and we should probably have something on DagRun that can return the DagRunInfo for
    #  that dag run

Committer

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

[Abhishekmishra2808]

Hi @dstandish 👋

I’d like to work on this issue if it’s available.

Proposed approach (aligned with AIP-76):

• Add a nullable partition_date field to DagRun with an Alembic migration.
• Expose a method on DagRun (e.g. get_run_info()) that reconstructs DagRunInfo by interfacing with the DAG’s Timetable, keeping the timetable as the source of truth for run calculation.
• Update scheduler, manual trigger, and backfill code paths to persist partition_date when creating DagRuns.
• Maintain backward compatibility and add test coverage for all DagRun types.

Happy to iterate on the approach if there are preferred patterns here. Thanks!

[shashbha14]

take