When the admission request is for a resource with an empty string as
group, which happens on core resources, the `creator` or `lastModifier`
annotations are invalid since they become `/creator` or
`/lastModifier`.
This patch removes the `/` when group = `""`.
Signed-off-by: Pierangelo Di Pilato <pierdipi@redhat.com>
* Add support for callback defaults
Signed-off-by: Pierangelo Di Pilato <pdipilat@redhat.com>
* Put unstr object in ctx and set user info
Signed-off-by: Pierangelo Di Pilato <pdipilat@redhat.com>
* Move get callback at the top
Signed-off-by: Pierangelo Di Pilato <pdipilat@redhat.com>
* Panic when using delete verb
Signed-off-by: Pierangelo Di Pilato <pdipilat@redhat.com>
* Split tests and add callback ctx tests
Signed-off-by: Pierangelo Di Pilato <pdipilat@redhat.com>
* Set user info annotations
Signed-off-by: Pierangelo Di Pilato <pdipilat@redhat.com>
* Register Webhook Rules from callbacks
Signed-off-by: Pierangelo Di Pilato <pdipilat@redhat.com>
* Adapt unstructured objects to apis.HasSpec
Signed-off-by: Pierangelo Di Pilato <pierdipi@redhat.com>
* Change json tag name to match struct field name
Signed-off-by: Pierangelo Di Pilato <pierdipi@redhat.com>
* Various cleanups around the codebase
- unindent the else after return
- make things private that are not used anywhere
- rearrange params
- etc
* add
By combining our validation logic into our mutating webhook we were previously allowing for mutating webhooks evaluated after our own to modify our resources into invalid shapes. There are no guarantees around ordering of mutating webhooks (that I could find), so the only way to remedy this properly is to split apart the two into separate webhook configurations:
- `defaulting`: which runs during the mutating admission webhook phase
- `validation`: which runs during the validating admission webhook phase.
The diagram in [this post](https://kubernetes.io/blog/2019/03/21/a-guide-to-kubernetes-admission-controllers/) is very helpful in illustrating the flow of webhooks.
Fixes: https://github.com/knative/pkg/issues/847
Pierangelo Di Pilato
Victor Agababov
Matt Moore