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system.go
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/
system.go
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package system
import (
"bufio"
"bytes"
"fmt"
"github.com/shirou/gopsutil/host"
"github.com/shirou/gopsutil/load"
"github.com/influxdb/telegraf/plugins"
)
type SystemStats struct{}
func (_ *SystemStats) Description() string {
return "Read metrics about system load & uptime"
}
func (_ *SystemStats) SampleConfig() string { return "" }
func (_ *SystemStats) add(acc plugins.Accumulator,
name string, val float64, tags map[string]string) {
if val >= 0 {
acc.Add(name, val, tags)
}
}
func (_ *SystemStats) Gather(acc plugins.Accumulator) error {
loadavg, err := load.LoadAvg()
if err != nil {
return err
}
hostinfo, err := host.HostInfo()
if err != nil {
return err
}
acc.Add("load1", loadavg.Load1, nil)
acc.Add("load5", loadavg.Load5, nil)
acc.Add("load15", loadavg.Load15, nil)
acc.Add("uptime", float64(hostinfo.Uptime), nil)
acc.Add("uptime_format", format_uptime(hostinfo.Uptime), nil)
return nil
}
func format_uptime(uptime uint64) string {
buf := new(bytes.Buffer)
w := bufio.NewWriter(buf)
days := uptime / (60 * 60 * 24)
if days != 0 {
s := ""
if days > 1 {
s = "s"
}
fmt.Fprintf(w, "%d day%s, ", days, s)
}
minutes := uptime / 60
hours := minutes / 60
hours %= 24
minutes %= 60
fmt.Fprintf(w, "%2d:%02d", hours, minutes)
w.Flush()
return buf.String()
}
func init() {
plugins.Add("system", func() plugins.Plugin {
return &SystemStats{}
})
}