Method deleteByLabels

prometheus/vec.go:410–427

deleteByLabels deletes a metric if the given labels are present in the metric.

(labels Labels, curry []curriedLabelValue)

// deleteByLabels deletes a metric if the given labels are present in the metric.
func (m *metricMap) deleteByLabels(labels Labels, curry []curriedLabelValue) int {
	m.mtx.Lock()
	defer m.mtx.Unlock()

	var numDeleted int

	for h, metrics := range m.metrics {
		i := findMetricWithPartialLabels(m.desc, metrics, labels, curry)
		if i >= len(metrics) {
			// Didn't find matching labels in this metric slice.
			continue
		}
		delete(m.metrics, h)
		numDeleted++
	}

	return numDeleted
}

// findMetricWithPartialLabel returns the index of the matching metric or
// len(metrics) if not found.