MergeTarget

apiVersion: config.cmmc.k8s.cash.app/v1beta1
kind: MergeTarget
metadata:
  name: our-merge-target
spec:
  target: some-ns/some-resource-name # a configMap
  data:
    someKey:
      init: ''
      jsonSchema: |
        { … }

• A MergeTarget describes the resource we are managing, in this case it is some-ns/some-resource-name.
• We can configure this resource with the keys that we care about managing on the target, above its someKey.
• Each data[$key]
• Can have an initial value that we'll inject if the data was not present the key was missing or empty
• Can have an optional jsonSchema that we use to validate the data before it is persisted.
• Creates the ConfigMap if it doesn't exist.
• Uses annotations to make sure there is only one MergeTarget per spec.target
• Clean up after itself when it is deleted.
• If it didn't eist, it will be removed
• If it did exist, the data will be reset back to what it was before.