legacyregistry.MustRegister(csrDurationHonored)
	})
}

var registerMetricsOnce sync.Once

type counterVecMetric interface {
	WithLabelValues(...string) metrics.CounterMetric
}

func countCSRDurationMetric(requested, honored counterVecMetric) genericregistry.BeginUpdateFunc {
	return func(ctx context.Context, obj, old runtime.Object, options *metav1.UpdateOptions) (genericregistry.FinishFunc, error) {

	// dedicated strategies.
	statusStore := *store
	statusStore.UpdateStrategy = csrregistry.StatusStrategy
	statusStore.ResetFieldsStrategy = csrregistry.StatusStrategy
	statusStore.BeginUpdate = countCSRDurationMetric(csrDurationRequested, csrDurationHonored)

	approvalStore := *store
	approvalStore.UpdateStrategy = csrregistry.ApprovalStrategy
	approvalStore.ResetFieldsStrategy = csrregistry.ApprovalStrategy

	for _, tt := range tests {
		tt := tt
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			testReq := &testCounterVecMetric{}
			testHon := &testCounterVecMetric{}

			finishFunc, err := countCSRDurationMetric(testReq, testHon)(nil, tt.obj, tt.old, tt.options)
			if err != nil {
				t.Fatal(err)
			}

			finishFunc(nil, tt.success)

			if got := testReq.signer; tt.wantRequested && tt.wantSigner != got {