Better syntax for ordered operations

[TheSpiritXIII]

Eschewed features

• This issue is not requesting templating, unstuctured edits, build-time side-effects from args or env vars, or any other eschewed feature.

What would you like to have added?

I want to apply transformers in order with a better UX.

Why is this needed?

For example, let's say I use labels to set all resources labels, but I want a few to be different. I want to use patches to modify the different labels, but sadly patches runs before labels.

It would be great if Kustomize supported some sort of operations field which let you list otherwise global fixed operations:

# These get applied in order.
operations:
- labels:
  - pairs:
      addonmanager.kubernetes.io/mode: Reconcile
- patchesStrategicMerge:
  - patch.yaml

Can you accomplish the motivating task without this feature, and if so, how?

I've been using transformers to accomplish this:

transformers
- |-
  apiVersion: builtin
  kind: LabelTransformer
  metadata:
    name: addonmanager
  labels:
    addonmanager.kubernetes.io/mode: Reconcile
  fieldSpecs:
  - path: metadata/labels
    create: true
- |-
  apiVersion: builtin
  kind: PatchStrategicMergeTransformer
  metadata:
    name: labels
  paths:
  - patch.yaml

However, there's some downsides:

• Notice I use the deprecated patch merge transformer... yet no warning.
• No IDE support. Normally I get syntax highlighting and basic field validation except within the transformers.

What other solutions have you considered?

N/A

Anything else we should know?

No response

Feature ownership

• I am interested in contributing this feature myself! 🎉

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/lifecycle rotten

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

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• After 90d of inactivity, lifecycle/stale is applied
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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Reopen this issue with /reopen
• Mark this issue as fresh with /remove-lifecycle rotten
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/close not-planned

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