go - Forbidden: uniqueItems cannot be set to true since the runtime complexity becomes quadratic - Stack Overflow

My Kubernetes CRD:

type FooSpec struct {
    // +kubebuilder:validation:UniqueItems=true
    MyItems []string `json:"myItems"`

Fails:

Forbidden: uniqueItems cannot be set to true since the runtime complexity becomes quadratic

This is documented: kubernetes.io validation docs

---

How can I ensure that the slice MyItems contains no duplicates without writing a webhook?

My Kubernetes CRD:

type FooSpec struct {
    // +kubebuilder:validation:UniqueItems=true
    MyItems []string `json:"myItems"`

Fails:

Forbidden: uniqueItems cannot be set to true since the runtime complexity becomes quadratic

This is documented: kubernetes.io validation docs

---

How can I ensure that the slice MyItems contains no duplicates without writing a webhook?

• go
• validation
• kubernetes
• kubernetes-custom-resources

Share Follow edited Jan 30 at 8:51 guettli asked Jan 30 at 8:33 guettliguettli 26.9k105105 gold badges414414 silver badges761761 bronze badges

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1 Answer 1

Sorted by: Reset to default 2

This works: listType=set

type FooSpec struct {
    // +listType=set
    MyItems []string `json:"myItems"`