Function environmentVariableKeyDuplication

score/container/container.go:305–326

environmentVariableKeyDuplication checks that no duplicated environment variable keys.

(ps ks.PodSpecer)

// environmentVariableKeyDuplication checks that no duplicated environment variable keys.
func environmentVariableKeyDuplication(ps ks.PodSpecer) (score scorecard.TestScore, err error) {
	pod := ps.GetPodTemplateSpec().Spec

	allContainers := pod.InitContainers
	allContainers = append(allContainers, pod.Containers...)

	score.Grade = scorecard.GradeAllOK

	for _, container := range allContainers {
		envs := make(map[string]struct{})
		for _, env := range container.Env {
			if _, duplicated := envs[env.Name]; duplicated {
				msg := fmt.Sprintf("Container environment variable key '%s' is duplicated", env.Name)
				score.AddComment(container.Name, "Environment Variable Key Duplication", msg)
				score.Grade = scorecard.GradeCritical
				continue
			}
			envs[env.Name] = struct{}{}
		}
	}
	return
}