prysm-pulse/shared/prometheus/simple_server.go

package prometheus

import (
	"net/http"

	"github.com/prometheus/client_golang/prometheus/promhttp"
)

// RunSimpleServerOrDie is a blocking call to serve /metrics at the given
// address.
func RunSimpleServerOrDie(addr string) {
	mux := http.NewServeMux()
	mux.Handle("/metrics", promhttp.Handler())

	svr := &http.Server{Addr: addr, Handler: mux}
	log.Fatal(svr.ListenAndServe())
}