Method RemoveUserRegistry

pkg/util/metrics_helper.go:620–636

RemoveUserRegistry removes all Prometheus registries for a given user. If hard is true, registry is removed completely. If hard is false, latest registry values are preserved for future aggregations.

(user string, hard bool)

// If hard is true, registry is removed completely.
// If hard is false, latest registry values are preserved for future aggregations.
func (r *UserRegistries) RemoveUserRegistry(user string, hard bool) {
	r.regsMu.Lock()
	defer r.regsMu.Unlock()

	for idx := 0; idx < len(r.regs); {
		if user != r.regs[idx].user {
			idx++
			continue
		}

		if !hard && r.softRemoveUserRegistry(&r.regs[idx]) {
			idx++ // keep it
		} else {
			r.regs = append(r.regs[:idx], r.regs[idx+1:]...) // remove it.
		}
	}
}

// Returns true, if we should keep latest metrics. Returns false if we failed to gather latest metrics,
// and this can be removed completely.