Get CustomResourceDefinition from CompositeResourceDefinition

[thephred]

What problem are you facing?

The only way to get a CustomResourceDefinition is either to get it from the list of all resource definitions (customResourceDefinitions.nodes) or directly by id from kubernetesResource(id: $id). The list of all CRDs can be quite long and if the user is just wanted the CRDs the correspond to the CompositeResourceDefinitions fetching the whole is and expensive way to get them. The CompositeResourceDefinition does offer the apiVersion and kind of composite and claim CRDs via status.controllers.compositeResourceType and status.controllers.compositeResourceClaimType respectively but there is no way to fetch a CRD from that info.

How could Upbound help solve your problem?

If a CompositeResourceDefinition offered fields that returned the CRD for the claim and the composite resource this would be a much smaller list and a more performant way of getting these details. Also, it would be nice to be able to fetch a CRD from kind and apiVersion but this is not strictly needed currently.