mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-23 20:36:21 +01:00
efcce45c90
This puts all collector-specific flags into their own namespace under "collector.<collector-name>", and moves from camel case to dashes, which is the standard in Prometheus land now.
54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
// +build !nontp
|
|
|
|
package collector
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/beevik/ntp"
|
|
"github.com/golang/glog"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
var (
|
|
ntpServer = flag.String("collector.ntp.server", "", "NTP server to use for ntp collector.")
|
|
)
|
|
|
|
type ntpCollector struct {
|
|
drift prometheus.Gauge
|
|
}
|
|
|
|
func init() {
|
|
Factories["ntp"] = NewNtpCollector
|
|
}
|
|
|
|
// Takes a config struct and prometheus registry and returns a new Collector exposing
|
|
// the offset between ntp and the current system time.
|
|
func NewNtpCollector(config Config) (Collector, error) {
|
|
if *ntpServer == "" {
|
|
return nil, fmt.Errorf("No NTP server specifies, see --ntpServer")
|
|
}
|
|
|
|
return &ntpCollector{
|
|
drift: prometheus.NewGauge(prometheus.GaugeOpts{
|
|
Namespace: Namespace,
|
|
Name: "ntp_drift_seconds",
|
|
Help: "Time between system time and ntp time.",
|
|
}),
|
|
}, nil
|
|
}
|
|
|
|
func (c *ntpCollector) Update(ch chan<- prometheus.Metric) (err error) {
|
|
t, err := ntp.Time(*ntpServer)
|
|
if err != nil {
|
|
return fmt.Errorf("Couldn't get ntp drift: %s", err)
|
|
}
|
|
drift := t.Sub(time.Now())
|
|
glog.V(1).Infof("Set ntp_drift_seconds: %f", drift.Seconds())
|
|
c.drift.Set(drift.Seconds())
|
|
c.drift.Collect(ch)
|
|
return err
|
|
}
|