95 lines
1.7 KiB
Go
95 lines
1.7 KiB
Go
package system
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import (
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"bufio"
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"bytes"
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"fmt"
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"os"
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"runtime"
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"strings"
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"time"
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"github.com/shirou/gopsutil/host"
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"github.com/shirou/gopsutil/load"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/plugins/inputs"
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)
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type SystemStats struct{}
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func (_ *SystemStats) Description() string {
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return "Read metrics about system load & uptime"
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}
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func (_ *SystemStats) SampleConfig() string { return "" }
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func (_ *SystemStats) Gather(acc telegraf.Accumulator) error {
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loadavg, err := load.Avg()
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if err != nil && !strings.Contains(err.Error(), "not implemented") {
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return err
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}
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fields := map[string]interface{}{
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"load1": loadavg.Load1,
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"load5": loadavg.Load5,
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"load15": loadavg.Load15,
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"n_cpus": runtime.NumCPU(),
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}
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users, err := host.Users()
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if err == nil {
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fields["n_users"] = len(users)
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} else if !os.IsPermission(err) {
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return err
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}
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now := time.Now()
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acc.AddGauge("system", fields, nil, now)
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hostinfo, err := host.Info()
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if err != nil {
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return err
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}
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acc.AddCounter("system", map[string]interface{}{
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"uptime": hostinfo.Uptime,
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}, nil, now)
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acc.AddFields("system", map[string]interface{}{
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"uptime_format": format_uptime(hostinfo.Uptime),
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}, nil, now)
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return nil
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}
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func format_uptime(uptime uint64) string {
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buf := new(bytes.Buffer)
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w := bufio.NewWriter(buf)
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days := uptime / (60 * 60 * 24)
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if days != 0 {
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s := ""
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if days > 1 {
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s = "s"
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}
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fmt.Fprintf(w, "%d day%s, ", days, s)
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}
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minutes := uptime / 60
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hours := minutes / 60
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hours %= 24
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minutes %= 60
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fmt.Fprintf(w, "%2d:%02d", hours, minutes)
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w.Flush()
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return buf.String()
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}
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func init() {
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inputs.Add("system", func() telegraf.Input {
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return &SystemStats{}
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})
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}
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