mirror of
https://github.com/prometheus/node_exporter.git
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2b3a112b54
This simple exporter exposes the systems unix time. It's useful to compare it to the prometheus server time and other targets to detect clock skew.
48 lines
951 B
Go
48 lines
951 B
Go
// +build !notime
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package collector
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import (
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"time"
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"github.com/golang/glog"
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"github.com/prometheus/client_golang/prometheus"
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)
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var (
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systemTime = prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: Namespace,
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Name: "time",
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Help: "System time in seconds since epoch (1970).",
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})
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)
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type timeCollector struct {
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config Config
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}
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func init() {
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Factories["time"] = NewTimeCollector
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}
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// Takes a config struct and prometheus registry and returns a new Collector exposing
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// the current system time in seconds since epoch.
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func NewTimeCollector(config Config) (Collector, error) {
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c := timeCollector{
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config: config,
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}
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if _, err := prometheus.RegisterOrGet(systemTime); err != nil {
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return nil, err
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}
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return &c, nil
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}
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func (c *timeCollector) Update() (updates int, err error) {
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updates++
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now := time.Now()
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glog.V(1).Infof("Set time: %f", now.Unix())
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systemTime.Set(float64(now.Unix()))
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return updates, err
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}
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