referring to control plane revisions for sidecar injection.

With revision tags, rather than relabeling a namespace from "istio.io/rev=revision-a" to "istio.io/rev=revision-b" to
change which control plane revision handles injection, it's possible to create a revision tag "prod" and label our
namespace "istio.io/rev=prod". The "prod" revision tag could point to "1-7-6" initially and then be changed to point to "1-8-1"
at some later point.

repos:
-   repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v4.4.0
    hooks:
    -   id: check-added-large-files
    -   id: check-toml
    -   id: check-yaml
        args:
        -   --unsafe
    -   id: end-of-file-fixer
    -   id: trailing-whitespace
-   repo: https://github.com/charliermarsh/ruff-pre-commit
    rev: v0.2.0
    hooks:
    -   id: ruff
        args:
        - --fix

participant code as Code
participant function as say_hi()
participant execute as Funktion ausgeführt

    rect rgba(0, 255, 0, .1)
        code ->> function: say_hi(name="Camila")
        function ->> execute: führe Code der Funktion aus
        execute ->> code: gib das Resultat zurück
    end

    rect rgba(0, 255, 255, .1)
        code ->> function: say_hi(name="Camila")

		// Call the ServeHTTP to execute the handler.
		apiRouter.ServeHTTP(rec, req)
		if rec.Code != testCase.expectedRespStatus {
			t.Errorf("Test %d: %s: Expected the response status to be `%d`, but instead found `%d`", i+1, instanceType, testCase.expectedRespStatus, rec.Code)
		}
		// When the operation is successful, check if sending metadata is successful too
		if rec.Code == http.StatusNoContent {

  namespaceSelector:
    matchExpressions:
    - key: istio.io/rev
      operator: DoesNotExist
    - key: istio-injection
      operator: DoesNotExist
  objectSelector:
    matchExpressions:
    - key: sidecar.istio.io/inject
      operator: NotIn
      values:
      - "false"
    - key: istio.io/rev
      operator: In
      values:

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: istio-cni
  labels:
    app: istio-cni
    release: {{ .Release.Name }}
    istio.io/rev: {{ .Values.revision | default "default" }}
    install.operator.istio.io/owning-resource: {{ .Values.ownerName | default "unknown" }}
    operator.istio.io/component: "Cni"
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: istio-cni
subjects:

  labels:
    app: istiod
    release: {{ .Release.Name }}
    istio: istiod
    istio.io/rev: {{ .Values.revision | default "default" | quote }}
webhooks:
  # Webhook handling per-revision validation. Mostly here so we can determine whether webhooks
  # are rejecting invalid configs on a per-revision basis.
  - name: rev.validation.istio.io
    clientConfig:
      # Should change from base but cannot for API compat

				programmed := kstatus.StatusFalse
				rev := gw.Labels[label.IoIstioRev.Name]
				if rev == "" {
					rev = "default"
				}
				for _, cond := range gw.Status.Conditions {
					if cond.Type == string(gateway.GatewayConditionProgrammed) {
						programmed = string(cond.Status)
					}
				}
				if allNamespaces {
					_, _ = fmt.Fprintf(w, "%s\t%s\t%s\t%s\n", gw.Namespace, gw.Name, rev, programmed)
				} else {

apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingWebhookConfiguration
metadata:
  name: istiod-default-validator
  labels:
    app: istiod
    istio: istiod
    istio.io/rev: {{ .Values.revision | default "default" | quote }}
    istio.io/tag: "default"
    # Required to make sure this resource is removed
    # when purging Istio resources
    operator.istio.io/component: Pilot
webhooks:
  - name: validation.istio.io

---
{{- if (eq .Values.platform "openshift") }}
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: ztunnel
  labels:
    app: ztunnel
    release: {{ .Release.Name }}
    istio.io/rev: {{ .Values.revision | default "default" }}
    install.operator.istio.io/owning-resource: {{ .Values.ownerName | default "unknown" }}
rules:
- apiGroups: ["security.openshift.io"]
  resources: ["securitycontextconstraints"]