Check Data Protection By Label in CEL expressions

 1apiVersion: kyverno.io/v1
 2kind: ClusterPolicy
 3metadata:
 4  name: k10-data-protection-by-label
 5  annotations:
 6    policies.kyverno.io/title: Check Data Protection By Label in CEL expressions
 7    policies.kyverno.io/category: Kasten K10 by Veeam in CEL 
 8    kyverno.io/kyverno-version: 1.11.0
 9    policies.kyverno.io/minversion: 1.11.0
10    kyverno.io/kubernetes-version: "1.26-1.27"
11    policies.kyverno.io/subject: Deployment, StatefulSet
12    policies.kyverno.io/description: >-
13      Check the 'dataprotection' label that production Deployments and StatefulSet have a named K10 Policy.
14      Use in combination with 'generate' ClusterPolicy to 'generate' a specific K10 Policy by name.
15spec:
16  validationFailureAction: Audit
17  rules:
18  - name: k10-data-protection-by-label
19    match:
20      any: 
21      - resources:
22          kinds:
23          - Deployment
24          - StatefulSet
25          operations:
26          - CREATE
27          - UPDATE
28          selector:
29            matchLabels:
30              purpose: production
31    validate:
32      cel:
33        expressions:
34          - expression: "object.metadata.?labels.?dataprotection.orValue('').startsWith('k10-')"
35            message: "Deployments and StatefulSets that specify 'dataprotection' label must have a valid k10-?* name (use labels: dataprotection: k10-<policyname>)"