Common objet labels and annotations

[fernandezcuesta]

What problem are you facing?

As a end user, I want to inject labels to all crossplane-managed resources. When using provider-kubernetes I might want to add labels or annotations to all resulting resources from Objects, so that its metadata would end up like:

apiVersion: v1
kind: ConfigMap
metadata:
  labels:
    app.kubernetes.io/managed-by: crossplane
    foo: bar
  namespace: default
  name: foo

When creating an Object like:

---
apiVersion: kubernetes.crossplane.io/v1alpha2
kind: Object
metadata:
  name: foo
spec:
  forProvider:
    manifest:
      apiVersion: v1
      kind: ConfigMap
      metadata:
        labels:
          foo: bar
        namespace: default
        name: foo

How could Crossplane help solve your problem?

I feel this should come directly from the ProviderConfig, e.g. under spec.commonLabels or by adding a new kind ObjectTemplate where we could set the skeleton of an Object (mainly metadata annotations and labels) from which all resulting Objects would merge.
Additionally a selector field could help selecting which Objects we want to alter.

apiVersion: kubernetes.crossplane.io/v1alpha2
kind: ObjectTemplate
metadata:
  name: common
spec:
  selector: {} # applies to all Objects
  commonLabels:
    app.kubernetes.io/managed-by: crossplane