func (z *Zfs) Gather(acc plugins.Accumulator) error {
kstatMetrics := z.KstatMetrics
if len(kstatMetrics) == 0 {
kstatMetrics = []string{"arcstats", "zfetchstats", "vdev_cache_stats"}
}
kstatPath := z.KstatPath
if len(kstatPath) == 0 {
kstatPath = "/proc/spl/kstat/zfs"
}
tags := getTags(kstatPath)
for _, metric := range kstatMetrics {
lines, err := internal.ReadLines(kstatPath + "/" + metric)
if err != nil {
return err
}
for i, line := range lines {
if i == 0 || i == 1 {
continue
}
if len(line) < 1 {
continue
}
rawData := strings.Split(line, " ")
key := metric + "_" + rawData[0]
rawValue := rawData[len(rawData)-1]
value, _ := strconv.ParseInt(rawValue, 10, 64)
acc.Add(key, value, tags)
}
}
return nil
}
func gatherPoolStats(pool poolInfo, acc plugins.Accumulator) error {
lines, err := internal.ReadLines(pool.ioFilename)
if err != nil {
return err
}
if len(lines) != 3 {
return err
}
keys := strings.Fields(lines[1])
values := strings.Fields(lines[2])
keyCount := len(keys)
if keyCount != len(values) {
return fmt.Errorf("Key and value count don't match Keys:%v Values:%v", keys, values)
}
tag := map[string]string{"pool": pool.name}
for i := 0; i < keyCount; i++ {
value, err := strconv.ParseInt(values[i], 10, 64)
if err != nil {
return err
}
acc.Add(keys[i], value, tag)
}
return nil
}
func (l *Lustre2) GetLustreProcStats(fileglob string, wanted_fields []*mapping, acc inputs.Accumulator) error {
files, err := filepath.Glob(fileglob)
if err != nil {
return err
}
for _, file := range files {
/* Turn /proc/fs/lustre/obdfilter/<ost_name>/stats and similar
* into just the object store target name
* Assumpion: the target name is always second to last,
* which is true in Lustre 2.1->2.5
*/
path := strings.Split(file, "/")
name := path[len(path)-2]
var fields map[string]interface{}
fields, ok := l.allFields[name]
if !ok {
fields = make(map[string]interface{})
l.allFields[name] = fields
}
lines, err := internal.ReadLines(file)
if err != nil {
return err
}
for _, line := range lines {
parts := strings.Fields(line)
for _, wanted := range wanted_fields {
var data uint64
if parts[0] == wanted.inProc {
wanted_field := wanted.field
// if not set, assume field[1]. Shouldn't be field[0], as
// that's a string
if wanted_field == 0 {
wanted_field = 1
}
data, err = strconv.ParseUint((parts[wanted_field]), 10, 64)
if err != nil {
return err
}
report_name := wanted.inProc
if wanted.reportAs != "" {
report_name = wanted.reportAs
}
fields[report_name] = data
}
}
}
}
return nil
}
func (z *Zfs) Gather(acc inputs.Accumulator) error {
kstatMetrics := z.KstatMetrics
if len(kstatMetrics) == 0 {
kstatMetrics = []string{"arcstats", "zfetchstats", "vdev_cache_stats"}
}
kstatPath := z.KstatPath
if len(kstatPath) == 0 {
kstatPath = "/proc/spl/kstat/zfs"
}
pools := getPools(kstatPath)
tags := getTags(pools)
if z.PoolMetrics {
for _, pool := range pools {
err := gatherPoolStats(pool, acc)
if err != nil {
return err
}
}
}
fields := make(map[string]interface{})
for _, metric := range kstatMetrics {
lines, err := internal.ReadLines(kstatPath + "/" + metric)
if err != nil {
return err
}
for i, line := range lines {
if i == 0 || i == 1 {
continue
}
if len(line) < 1 {
continue
}
rawData := strings.Split(line, " ")
key := metric + "_" + rawData[0]
rawValue := rawData[len(rawData)-1]
value, _ := strconv.ParseInt(rawValue, 10, 64)
fields[key] = value
}
}
acc.AddFields("zfs", fields, tags)
return nil
}