1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
// SPDX-License-Identifier: GPL-3.0-or-later
package dmcache
import (
"errors"
"os"
"testing"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
dataConfigJSON, _ = os.ReadFile("testdata/config.json")
dataConfigYAML, _ = os.ReadFile("testdata/config.yaml")
)
func Test_testDataIsValid(t *testing.T) {
for name, data := range map[string][]byte{
"dataConfigJSON": dataConfigJSON,
"dataConfigYAML": dataConfigYAML,
} {
require.NotNil(t, data, name)
}
}
func TestDmCace_Configuration(t *testing.T) {
module.TestConfigurationSerialize(t, &DmCache{}, dataConfigJSON, dataConfigYAML)
}
func TestDmCache_Init(t *testing.T) {
tests := map[string]struct {
config Config
wantFail bool
}{
"fails if failed to locate ndsudo": {
wantFail: true,
config: New().Config,
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
lvm := New()
lvm.Config = test.config
if test.wantFail {
assert.Error(t, lvm.Init())
} else {
assert.NoError(t, lvm.Init())
}
})
}
}
func TestDmCache_Cleanup(t *testing.T) {
tests := map[string]struct {
prepare func() *DmCache
}{
"not initialized exec": {
prepare: func() *DmCache {
return New()
},
},
"after check": {
prepare: func() *DmCache {
lvm := New()
lvm.exec = prepareMockOK()
_ = lvm.Check()
return lvm
},
},
"after collect": {
prepare: func() *DmCache {
lvm := New()
lvm.exec = prepareMockOK()
_ = lvm.Collect()
return lvm
},
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
lvm := test.prepare()
assert.NotPanics(t, lvm.Cleanup)
})
}
}
func TestDmCache_Charts(t *testing.T) {
assert.NotNil(t, New().Charts())
}
func TestDmCache_Check(t *testing.T) {
tests := map[string]struct {
prepareMock func() *mockDmsetupExec
wantFail bool
}{
"success case": {
prepareMock: prepareMockOK,
wantFail: false,
},
"error on cache status": {
prepareMock: prepareMockErr,
wantFail: true,
},
"empty response": {
prepareMock: prepareMockEmptyResponse,
wantFail: true,
},
"unexpected response": {
prepareMock: prepareMockUnexpectedResponse,
wantFail: true,
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
dmcache := New()
mock := test.prepareMock()
dmcache.exec = mock
if test.wantFail {
assert.Error(t, dmcache.Check())
} else {
assert.NoError(t, dmcache.Check())
}
})
}
}
func TestLVM_Collect(t *testing.T) {
tests := map[string]struct {
prepareMock func() *mockDmsetupExec
wantCharts int
wantMetrics map[string]int64
}{
"success case": {
prepareMock: prepareMockOK,
wantCharts: len(deviceChartsTmpl) * 2,
wantMetrics: map[string]int64{
"dmcache_device_vg_raid1_md21-media_cache_free_bytes": 1252402397184,
"dmcache_device_vg_raid1_md21-media_cache_used_bytes": 396412059648,
"dmcache_device_vg_raid1_md21-media_demotions_bytes": 0,
"dmcache_device_vg_raid1_md21-media_dirty_bytes": 0,
"dmcache_device_vg_raid1_md21-media_metadata_free_bytes": 32243712,
"dmcache_device_vg_raid1_md21-media_metadata_used_bytes": 9699328,
"dmcache_device_vg_raid1_md21-media_promotions_bytes": 48035266560,
"dmcache_device_vg_raid1_md21-media_read_hits": 82870357,
"dmcache_device_vg_raid1_md21-media_read_misses": 5499462,
"dmcache_device_vg_raid1_md21-media_write_hits": 26280342,
"dmcache_device_vg_raid1_md21-media_write_misses": 8017854,
"dmcache_device_vg_raid2_md22-media_cache_free_bytes": 1252402397184,
"dmcache_device_vg_raid2_md22-media_cache_used_bytes": 396412059648,
"dmcache_device_vg_raid2_md22-media_demotions_bytes": 0,
"dmcache_device_vg_raid2_md22-media_dirty_bytes": 0,
"dmcache_device_vg_raid2_md22-media_metadata_free_bytes": 32243712,
"dmcache_device_vg_raid2_md22-media_metadata_used_bytes": 9699328,
"dmcache_device_vg_raid2_md22-media_promotions_bytes": 48035266560,
"dmcache_device_vg_raid2_md22-media_read_hits": 82870357,
"dmcache_device_vg_raid2_md22-media_read_misses": 5499462,
"dmcache_device_vg_raid2_md22-media_write_hits": 26280342,
"dmcache_device_vg_raid2_md22-media_write_misses": 8017854,
},
},
"error on cache status": {
prepareMock: prepareMockErr,
wantMetrics: nil,
},
"empty response": {
prepareMock: prepareMockEmptyResponse,
wantMetrics: nil,
},
"unexpected response": {
prepareMock: prepareMockUnexpectedResponse,
wantMetrics: nil,
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
dmcache := New()
mock := test.prepareMock()
dmcache.exec = mock
mx := dmcache.Collect()
assert.Equal(t, test.wantMetrics, mx)
assert.Len(t, *dmcache.Charts(), test.wantCharts)
testMetricsHasAllChartsDims(t, dmcache, mx)
})
}
}
func testMetricsHasAllChartsDims(t *testing.T, dmcache *DmCache, mx map[string]int64) {
for _, chart := range *dmcache.Charts() {
if chart.Obsolete {
continue
}
for _, dim := range chart.Dims {
_, ok := mx[dim.ID]
assert.Truef(t, ok, "collected metrics has no data for dim '%s' chart '%s'", dim.ID, chart.ID)
}
}
}
func prepareMockOK() *mockDmsetupExec {
return &mockDmsetupExec{
cacheStatusData: []byte(`
vg_raid1_md21-media: 0 2404139008 cache 8 2368/10240 4096 189024/786216 82870357 5499462 26280342 8017854 0 22905 0 3 metadata2 writethrough no_discard_passdown 2 migration_threshold 32768 mq 10 random_threshold 0 sequential_threshold 0 discard_promote_adjustment 0 read_promote_adjustment 0 write_promote_adjustment 0 rw -
vg_raid2_md22-media: 0 2404139008 cache 8 2368/10240 4096 189024/786216 82870357 5499462 26280342 8017854 0 22905 0 3 metadata2 writethrough no_discard_passdown 2 migration_threshold 32768 mq 10 random_threshold 0 sequential_threshold 0 discard_promote_adjustment 0 read_promote_adjustment 0 write_promote_adjustment 0 rw -
`),
}
}
func prepareMockErr() *mockDmsetupExec {
return &mockDmsetupExec{
errOnCacheStatus: true,
}
}
func prepareMockEmptyResponse() *mockDmsetupExec {
return &mockDmsetupExec{}
}
func prepareMockUnexpectedResponse() *mockDmsetupExec {
return &mockDmsetupExec{
cacheStatusData: []byte(`
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Nulla malesuada erat id magna mattis, eu viverra tellus rhoncus.
Fusce et felis pulvinar, posuere sem non, porttitor eros.
`),
}
}
type mockDmsetupExec struct {
errOnCacheStatus bool
cacheStatusData []byte
}
func (m *mockDmsetupExec) cacheStatus() ([]byte, error) {
if m.errOnCacheStatus {
return nil, errors.New("mock.cacheStatus() error")
}
return m.cacheStatusData, nil
}
|