telegraf/plugins/inputs/zfs/zfs_freebsd_test.go

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// +build freebsd
package zfs
import (
"fmt"
"testing"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/require"
)
// $ zpool list -Hp
var zpool_output = []string{
"freenas-boot 30601641984 2022177280 28579464704 - - 6 1.00x ONLINE -",
"red1 8933531975680 1126164848640 7807367127040 - 8% 12 1.83x ONLINE /mnt",
"temp1 2989297238016 1626309320704 1362987917312 - 38% 54 1.28x ONLINE /mnt",
"temp2 2989297238016 626958278656 2362338959360 - 12% 20 1.00x ONLINE /mnt",
}
func mock_zpool() ([]string, error) {
return zpool_output, nil
}
// sysctl -q kstat.zfs.misc.arcstats
// sysctl -q kstat.zfs.misc.vdev_cache_stats
var kstat_vdev_cache_stats_output = []string{
"kstat.zfs.misc.vdev_cache_stats.misses: 87789",
"kstat.zfs.misc.vdev_cache_stats.hits: 465583",
"kstat.zfs.misc.vdev_cache_stats.delegations: 6952",
}
// sysctl -q kstat.zfs.misc.zfetchstats
var kstat_zfetchstats_output = []string{
"kstat.zfs.misc.zfetchstats.max_streams: 0",
"kstat.zfs.misc.zfetchstats.misses: 0",
"kstat.zfs.misc.zfetchstats.hits: 0",
}
func mock_sysctl(metric string) ([]string, error) {
if metric == "vdev_cache_stats" {
return kstat_vdev_cache_stats_output, nil
}
if metric == "zfetchstats" {
return kstat_zfetchstats_output, nil
}
return []string{}, fmt.Errorf("Invalid arg")
}
func TestZfsPoolMetrics(t *testing.T) {
var acc testutil.Accumulator
z := &Zfs{
KstatMetrics: []string{"vdev_cache_stats"},
sysctl: mock_sysctl,
zpool: mock_zpool,
}
err := z.Gather(&acc)
require.NoError(t, err)
require.False(t, acc.HasMeasurement("zfs_pool"))
acc.Metrics = nil
z = &Zfs{
KstatMetrics: []string{"vdev_cache_stats"},
PoolMetrics: true,
sysctl: mock_sysctl,
zpool: mock_zpool,
}
err = z.Gather(&acc)
require.NoError(t, err)
//one pool, all metrics
tags := map[string]string{
"pool": "freenas-boot",
"health": "ONLINE",
}
poolMetrics := getFreeNasBootPoolMetrics()
acc.AssertContainsTaggedFields(t, "zfs_pool", poolMetrics, tags)
}
func TestZfsGeneratesMetrics(t *testing.T) {
var acc testutil.Accumulator
z := &Zfs{
KstatMetrics: []string{"vdev_cache_stats"},
sysctl: mock_sysctl,
zpool: mock_zpool,
}
err := z.Gather(&acc)
require.NoError(t, err)
//four pool, vdev_cache_stats metrics
tags := map[string]string{
"pools": "freenas-boot::red1::temp1::temp2",
}
intMetrics := getKstatMetricsVdevOnly()
acc.AssertContainsTaggedFields(t, "zfs", intMetrics, tags)
acc.Metrics = nil
z = &Zfs{
KstatMetrics: []string{"zfetchstats", "vdev_cache_stats"},
sysctl: mock_sysctl,
zpool: mock_zpool,
}
err = z.Gather(&acc)
require.NoError(t, err)
//four pool, vdev_cache_stats and zfetchstatus metrics
intMetrics = getKstatMetricsVdevAndZfetch()
acc.AssertContainsTaggedFields(t, "zfs", intMetrics, tags)
}
func getFreeNasBootPoolMetrics() map[string]interface{} {
return map[string]interface{}{
"allocated": int64(2022177280),
"capacity": int64(6),
"dedupratio": float64(1),
"free": int64(28579464704),
"size": int64(30601641984),
"fragmentation": int64(0),
}
}
func getKstatMetricsVdevOnly() map[string]interface{} {
return map[string]interface{}{
"vdev_cache_stats_misses": int64(87789),
"vdev_cache_stats_hits": int64(465583),
"vdev_cache_stats_delegations": int64(6952),
}
}
func getKstatMetricsVdevAndZfetch() map[string]interface{} {
return map[string]interface{}{
"vdev_cache_stats_misses": int64(87789),
"vdev_cache_stats_hits": int64(465583),
"vdev_cache_stats_delegations": int64(6952),
"zfetchstats_max_streams": int64(0),
"zfetchstats_misses": int64(0),
"zfetchstats_hits": int64(0),
}
}