Help with cascading deletes. and kopf.adopt()

[arkady69]

Started using kopf pretty recently. its great!! also kind of new k8s in general...

I have a pretty simple scenario. Two crds, parent and child... parent is created first, the child is created sometime later, but not by the parent... is there a way for child object to get itself adapted by the parent instance using kopf.adopt() method. it would greatly simplify or even eliminate my cascading delete code.

Thanks in advance...

[arkady69]

after little bit of hacking around i came with this:

`import kopf
import kubernetes.client
from box import SBox
from icecream import ic

@kopf.on.create('children')
def create_child_fn(meta: kopf.Meta, name, namespace, **_):
meta_box = SBox(meta, conversion_box=True, frozen_box=True)
api = kubernetes.client.CustomObjectsApi()
parent = api.get_namespaced_custom_object(namespace=namespace, version='v1',
group='siccat.com',
plural='parents',
name=meta_box.labels.parent)

parent_box = SBox(parent, frozen_box=True, conversion_box=True)

merge_patch = {
    "metadata": {
        "ownerReferences": [
            {
                "apiVersion": "siccat.com/v1",
                "blockOwnerDeletion": True,
                "kind": "Parent",
                "name": parent_box.metadata.name,
                "uid": parent_box.metadata.uid
            }
        ]}
}
api.patch_namespaced_custom_object(namespace=namespace, name=name,
                                   group="siccat.com",
                                   version="v1",
                                   plural="children",
                                   body=merge_patch)

ic("create", parent)`

it performs the cascading delete i was hoping for... is there a better approach?