telegraf/plugins/inputs/dmcache/dmcache_linux_test.go

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// +build linux
2017-04-07 22:39:43 +00:00
package dmcache
import (
"errors"
"testing"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/require"
)
var (
measurement = "dmcache"
badFormatOutput = []string{"cs-1: 0 4883791872 cache 8 1018/1501122 512 7/464962 139 352643 "}
good2DevicesFormatOutput = []string{
"cs-1: 0 4883791872 cache 8 1018/1501122 512 7/464962 139 352643 15 46 0 7 0 1 writeback 2 migration_threshold 2048 mq 10 random_threshold 4 sequential_threshold 512 discard_promote_adjustment 1 read_promote_adjustment 4 write_promote_adjustment 8",
"cs-2: 0 4294967296 cache 8 72352/1310720 128 26/24327168 2409 286 265 524682 0 0 0 1 writethrough 2 migration_threshold 2048 mq 10 random_threshold 4 sequential_threshold 512 discard_promote_adjustment 1 read_promote_adjustment 4 write_promote_adjustment 8",
}
)
func TestPerDeviceGoodOutput(t *testing.T) {
var acc testutil.Accumulator
var plugin = &DMCache{
PerDevice: true,
getCurrentStatus: func() ([]string, error) {
return good2DevicesFormatOutput, nil
},
}
err := plugin.Gather(&acc)
require.NoError(t, err)
tags1 := map[string]string{
"device": "cs-1",
}
fields1 := map[string]interface{}{
"length": 4883791872,
"metadata_blocksize": 8,
"metadata_used": 1018,
"metadata_total": 1501122,
"cache_blocksize": 512,
"cache_used": 7,
"cache_total": 464962,
"read_hits": 139,
"read_misses": 352643,
"write_hits": 15,
"write_misses": 46,
"demotions": 0,
"promotions": 7,
"dirty": 0,
}
acc.AssertContainsTaggedFields(t, measurement, fields1, tags1)
tags2 := map[string]string{
"device": "cs-2",
}
fields2 := map[string]interface{}{
"length": 4294967296,
"metadata_blocksize": 8,
"metadata_used": 72352,
"metadata_total": 1310720,
"cache_blocksize": 128,
"cache_used": 26,
"cache_total": 24327168,
"read_hits": 2409,
"read_misses": 286,
"write_hits": 265,
"write_misses": 524682,
"demotions": 0,
"promotions": 0,
"dirty": 0,
}
acc.AssertContainsTaggedFields(t, measurement, fields2, tags2)
tags3 := map[string]string{
"device": "all",
}
fields3 := map[string]interface{}{
"length": 9178759168,
"metadata_blocksize": 16,
"metadata_used": 73370,
"metadata_total": 2811842,
"cache_blocksize": 640,
"cache_used": 33,
"cache_total": 24792130,
"read_hits": 2548,
"read_misses": 352929,
"write_hits": 280,
"write_misses": 524728,
"demotions": 0,
"promotions": 7,
"dirty": 0,
}
acc.AssertContainsTaggedFields(t, measurement, fields3, tags3)
}
func TestNotPerDeviceGoodOutput(t *testing.T) {
var acc testutil.Accumulator
var plugin = &DMCache{
PerDevice: false,
getCurrentStatus: func() ([]string, error) {
return good2DevicesFormatOutput, nil
},
}
err := plugin.Gather(&acc)
require.NoError(t, err)
tags := map[string]string{
"device": "all",
}
fields := map[string]interface{}{
"length": 9178759168,
"metadata_blocksize": 16,
"metadata_used": 73370,
"metadata_total": 2811842,
"cache_blocksize": 640,
"cache_used": 33,
"cache_total": 24792130,
"read_hits": 2548,
"read_misses": 352929,
"write_hits": 280,
"write_misses": 524728,
"demotions": 0,
"promotions": 7,
"dirty": 0,
}
acc.AssertContainsTaggedFields(t, measurement, fields, tags)
}
func TestNoDevicesOutput(t *testing.T) {
var acc testutil.Accumulator
var plugin = &DMCache{
PerDevice: true,
getCurrentStatus: func() ([]string, error) {
return []string{}, nil
},
}
err := plugin.Gather(&acc)
require.NoError(t, err)
}
func TestErrorDuringGettingStatus(t *testing.T) {
var acc testutil.Accumulator
var plugin = &DMCache{
PerDevice: true,
getCurrentStatus: func() ([]string, error) {
return nil, errors.New("dmsetup doesn't exist")
},
}
err := plugin.Gather(&acc)
require.Error(t, err)
}
func TestBadFormatOfStatus(t *testing.T) {
var acc testutil.Accumulator
var plugin = &DMCache{
PerDevice: true,
getCurrentStatus: func() ([]string, error) {
return badFormatOutput, nil
},
}
err := plugin.Gather(&acc)
require.Error(t, err)
}