in pkg/registry/registry.go [240:251]
func (r *Registry) ListAllExternalMetrics() []provider.ExternalMetricInfo {
r.lock.RLock()
defer r.lock.RUnlock()
infos := make([]provider.ExternalMetricInfo, len(r.externalMetrics))
count := 0
for k := range r.externalMetrics {
infos[count] = k
count++
}
r.logger.V(1).Info("External metrics served by the adapter", "count", len(infos))
return infos
}