johnhoran opened a new pull request, #44357:
URL: https://github.com/apache/airflow/pull/44357
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I would like to have multiple callbacks in the kubernetes pod operator, and
add two new callbacks. `on_manifest_finalization` would allow the callback to
make changes just before the manifest is turned into a pod.
`on_pod_wrapup` would happen after the calls to `on_pod_completion` but just
before the pod is deleted.
Adding both of these plus allowing multiple callbacks would allow you to do
things in the kubernetes pod operator akin to how it approaches XComs but in a
modular way. My use case here is I'm running DBT in kpo, and I want to do
multiple things to the DBT artefacts after the DBT job has run, I could use
`on_manifest_finalization` to insert an alpine sidecar with volumes mounted
with the same intention as the XCom sidecar, where the sidecar keeps the
volumes alive as files are extracted from it. `on_pod_wrapup` would allow me
to insert a single sidecar and have multiple callbacks run their
`on_pod_completion` before `on_pod_wrapup` kills the sidecar.
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