node_exporter/collector/collector.go

23 lines
758 B
Go

// Exporter is a prometheus exporter using multiple Factories to collect and export system metrics.
package collector
import (
"github.com/prometheus/client_golang/prometheus"
)
const Namespace = "node"
var Factories = make(map[string]func() (Collector, error))
// Interface a collector has to implement.
type Collector interface {
// Get new metrics and expose them via prometheus registry.
Update(ch chan<- prometheus.Metric) (err error)
}
// TODO: Instead of periodically call Update, a Collector could be implemented
// as a real prometheus.Collector that only gathers metrics when
// scraped. (However, for metric gathering that takes very long, it might
// actually be better to do them proactively before scraping to minimize scrape
// time.)