func getTopologyValues()

in plugins/in_tree_volume.go [107:131]

• 23 lines of code
• 9 McCabe index (conditional complexity)

func getTopologyValues(pv *v1.PersistentVolume, key string) []string {
	if pv.Spec.NodeAffinity == nil ||
		pv.Spec.NodeAffinity.Required == nil ||
		len(pv.Spec.NodeAffinity.Required.NodeSelectorTerms) < 1 {
		return nil
	}

	values := make(map[string]bool)
	for i := range pv.Spec.NodeAffinity.Required.NodeSelectorTerms {
		for _, r := range pv.Spec.NodeAffinity.Required.NodeSelectorTerms[i].MatchExpressions {
			if r.Key == key {
				for _, v := range r.Values {
					values[v] = true
				}
			}
		}
	}
	// remove duplication and sort them in order for better usage
	var re []string
	for k := range values {
		re = append(re, k)
	}
	sort.Strings(re)
	return re
}