89 lines
1.8 KiB
Go
89 lines
1.8 KiB
Go
package zfs
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import (
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"path/filepath"
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"strconv"
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"strings"
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"github.com/influxdb/telegraf/internal"
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"github.com/influxdb/telegraf/plugins"
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)
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type Zfs struct {
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KstatPath string
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KstatMetrics []string
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}
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var sampleConfig = `
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# ZFS kstat path
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# If not specified, then default is:
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# kstatPath = "/proc/spl/kstat/zfs"
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#
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# By default, telegraf gather all zfs stats
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# If not specified, then default is:
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# kstatMetrics = ["arcstats", "zfetchstats", "vdev_cache_stats"]
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`
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func (z *Zfs) SampleConfig() string {
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return sampleConfig
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}
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func (z *Zfs) Description() string {
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return "Read metrics of ZFS from arcstats, zfetchstats and vdev_cache_stats"
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}
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func getTags(kstatPath string) map[string]string {
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var pools string
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poolsDirs, _ := filepath.Glob(kstatPath + "/*/io")
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for _, poolDir := range poolsDirs {
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poolDirSplit := strings.Split(poolDir, "/")
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pool := poolDirSplit[len(poolDirSplit)-2]
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if len(pools) != 0 {
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pools += "::"
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}
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pools += pool
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}
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return map[string]string{"pools": pools}
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}
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func (z *Zfs) Gather(acc plugins.Accumulator) error {
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kstatMetrics := z.KstatMetrics
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if len(kstatMetrics) == 0 {
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kstatMetrics = []string{"arcstats", "zfetchstats", "vdev_cache_stats"}
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}
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kstatPath := z.KstatPath
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if len(kstatPath) == 0 {
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kstatPath = "/proc/spl/kstat/zfs"
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}
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tags := getTags(kstatPath)
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for _, metric := range kstatMetrics {
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lines, err := internal.ReadLines(kstatPath + "/" + metric)
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if err != nil {
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return err
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}
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for i, line := range lines {
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if i == 0 || i == 1 {
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continue
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}
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if len(line) < 1 {
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continue
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}
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rawData := strings.Split(line, " ")
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key := metric + "_" + rawData[0]
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rawValue := rawData[len(rawData)-1]
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value, _ := strconv.ParseInt(rawValue, 10, 64)
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acc.Add(key, value, tags)
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}
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}
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return nil
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}
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func init() {
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plugins.Add("zfs", func() plugins.Plugin {
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return &Zfs{}
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})
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}
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