}
}

func (rc *resourceMetricsCollector) collectNodeCPUMetrics(ch chan<- metrics.Metric, s summary.NodeStats) {
	if s.CPU == nil || s.CPU.UsageCoreNanoSeconds == nil {
		return
	}

	ch <- metrics.NewLazyMetricWithTimestamp(s.CPU.Time.Time,
		metrics.NewLazyConstMetric(nodeCPUUsageDesc, metrics.CounterValue, float64(*s.CPU.UsageCoreNanoSeconds)/float64(time.Second)))
}

	// as opposed to on-demand.
	// If the metric was requested as needed, then Timestamp==0.
	if m.Timestamp == 0 {
		return pm, nil
	}
	return metrics.NewLazyMetricWithTimestamp(time.Unix(0, m.Timestamp), pm), nil
}

var criTypeToProm = map[runtimeapi.MetricType]metrics.ValueType{
	runtimeapi.MetricType_COUNTER: metrics.CounterValue,
	runtimeapi.MetricType_GAUGE:   metrics.GaugeValue,