Struct defaultQueueMetrics

util/workqueue/metrics.go:73–98

defaultQueueMetrics expects the caller to lock before setting any metrics.

// defaultQueueMetrics expects the caller to lock before setting any metrics.
type defaultQueueMetrics struct {
	clock clock.Clock

	// current depth of a workqueue
	depth GaugeMetric
	// total number of adds handled by a workqueue
	adds CounterMetric
	// how long an item stays in a workqueue
	latency HistogramMetric
	// how long processing an item from a workqueue takes
	workDuration         HistogramMetric
	addTimes             map[t]time.Time
	processingStartTimes map[t]time.Time

	// how long have current threads been working?
	unfinishedWorkSeconds   SettableGaugeMetric
	longestRunningProcessor SettableGaugeMetric

	// TODO(danielqsj): Remove the following metrics, they are deprecated
	deprecatedDepth                   GaugeMetric
	deprecatedAdds                    CounterMetric
	deprecatedLatency                 SummaryMetric
	deprecatedWorkDuration            SummaryMetric
	deprecatedUnfinishedWorkSeconds   SettableGaugeMetric
	deprecatedLongestRunningProcessor SettableGaugeMetric
}

func (m *defaultQueueMetrics) add(item t) {
	if m == nil {