Deprecate accessing outlet and inlet events through string in Airflow 3.0

[Lee-W]

Description

as title

Use case/motivation

Since the introduction of DatasetAlias/AssetAlias and the name attribute to Asset, accessing outlet_events and inlet_evnets has become confusing.

e.g., What should something like the following mean?

   def produce_asset_events_through_asset_alias_with_no_taskflow(*, outlet_events=None):
        bucket_name = "bucket"
        object_path = "my-task"
        outlet_events["example-alias-no-taskflow"]

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

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

[Lee-W]

• PR for adding deprecation warning to v2-10-test Raise deprecation warning when accessing inlet or outlet events through str #43922 (in review)
• PR for removing it from Airflow 3 Deprecate accessing inlet and outlet events through string #43959 (WIP)

[uranusjr]

I’ve decided to hold this for a now. This needs to be done in the 2.x branch, and according to discussions in #44283 (comment), we should hold merging this kind of PRs until 2.10 is finalised. There’s not much point for us to do this right now since the PR won’t be able to be merged immediately. Let’s keep this in the back log and come back when we can actually merge the PR.

[Lee-W]

Got it. I'll push my uncommitted local work and then stop working on this one

[Lee-W]

I think all the deprecation warnings have been merged. Close this issue