Separate pool tag and stat collection.

closes #427
This commit is contained in:
Allen Petersen 2015-12-10 10:38:47 -08:00 committed by Cameron Sparr
parent e3c8a1131a
commit c89ef84df7
2 changed files with 41 additions and 20 deletions

View File

@ -1,3 +1,8 @@
## v0.2.5 [unreleased]
### Features
- [#427](https://github.com/influxdb/telegraf/pull/427): zfs plugin: pool stats added. Thanks @allenpetersen!
## v0.2.4 [2015-12-08]
### Features

View File

@ -16,6 +16,11 @@ type Zfs struct {
PoolMetrics bool
}
type poolInfo struct {
name string
ioFilename string
}
var sampleConfig = `
# ZFS kstat path
# If not specified, then default is:
@ -37,30 +42,34 @@ func (z *Zfs) Description() string {
return "Read metrics of ZFS from arcstats, zfetchstats and vdev_cache_stats"
}
func getPoolStats(kstatPath string, poolMetrics bool, acc plugins.Accumulator) (map[string]string, error) {
var pools string
func getPools(kstatPath string) []poolInfo {
pools := make([]poolInfo, 0)
poolsDirs, _ := filepath.Glob(kstatPath + "/*/io")
for _, poolDir := range poolsDirs {
poolDirSplit := strings.Split(poolDir, "/")
pool := poolDirSplit[len(poolDirSplit)-2]
if len(pools) != 0 {
pools += "::"
}
pools += pool
if poolMetrics {
err := readPoolStats(poolDir, pool, acc)
if err != nil {
return nil, err
}
}
pools = append(pools, poolInfo{name: pool, ioFilename: poolDir})
}
return map[string]string{"pools": pools}, nil
return pools
}
func readPoolStats(poolIoPath string, poolName string, acc plugins.Accumulator) error {
lines, err := internal.ReadLines(poolIoPath)
func getTags(pools []poolInfo) map[string]string {
var poolNames string
for _, pool := range pools {
if len(poolNames) != 0 {
poolNames += "::"
}
poolNames += pool.name
}
return map[string]string{"pools": poolNames}
}
func gatherPoolStats(pool poolInfo, acc plugins.Accumulator) error {
lines, err := internal.ReadLines(pool.ioFilename)
if err != nil {
return err
}
@ -78,7 +87,7 @@ func readPoolStats(poolIoPath string, poolName string, acc plugins.Accumulator)
return fmt.Errorf("Key and value count don't match Keys:%v Values:%v", keys, values)
}
tag := map[string]string{"pool": poolName}
tag := map[string]string{"pool": pool.name}
for i := 0; i < keyCount; i++ {
value, err := strconv.ParseInt(values[i], 10, 64)
@ -103,10 +112,17 @@ func (z *Zfs) Gather(acc plugins.Accumulator) error {
kstatPath = "/proc/spl/kstat/zfs"
}
tags, err := getPoolStats(kstatPath, z.PoolMetrics, acc)
pools := getPools(kstatPath)
tags := getTags(pools)
if z.PoolMetrics {
for _, pool := range pools {
err := gatherPoolStats(pool, acc)
if err != nil {
return err
}
}
}
for _, metric := range kstatMetrics {
lines, err := internal.ReadLines(kstatPath + "/" + metric)