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
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Metrics::Subscribers::RailsCache do
let(:env) { {} }
let(:transaction) { Gitlab::Metrics::WebTransaction.new(env) }
let(:subscriber) { described_class.new }
let(:event) { double(:event, duration: 15.2, payload: { key: %w[a b c] }) }
describe '#cache_read' do
it 'increments the cache_read duration' do
expect(subscriber).to receive(:observe)
.with(:read, event.duration)
subscriber.cache_read(event)
end
context 'with a transaction' do
before do
allow(subscriber).to receive(:current_transaction)
.and_return(transaction)
end
context 'with hit event' do
let(:event) { double(:event, duration: 15.2, payload: { hit: true }) }
context 'when super operation is fetch' do
let(:event) { double(:event, duration: 15.2, payload: { hit: true, super_operation: :fetch }) }
it 'does not increment cache read miss total' do
expect(transaction).not_to receive(:increment)
.with(:gitlab_cache_misses_total, 1)
subscriber.cache_read(event)
end
end
end
context 'with miss event' do
let(:event) { double(:event, duration: 15.2, payload: { hit: false }) }
it 'increments the cache_read_miss total' do
expect(transaction).to receive(:increment)
.with(:gitlab_cache_misses_total, 1)
expect(transaction).to receive(:increment)
.with(any_args).at_least(1) # Other calls
subscriber.cache_read(event)
end
context 'when super operation is fetch' do
let(:event) { double(:event, duration: 15.2, payload: { hit: false, super_operation: :fetch }) }
it 'does not increment cache read miss total' do
expect(transaction).not_to receive(:increment)
.with(:gitlab_cache_misses_total, 1)
subscriber.cache_read(event)
end
end
end
end
end
describe '#cache_read_multi' do
subject { subscriber.cache_read_multi(event) }
context 'with a transaction' do
before do
allow(subscriber).to receive(:current_transaction)
.and_return(transaction)
end
it 'observes multi-key count' do
expect(transaction).to receive(:observe)
.with(:gitlab_cache_read_multikey_count, event.payload[:key].size)
subject
end
end
context 'with no transaction' do
it 'does not observes multi-key count' do
expect(transaction).not_to receive(:observe)
.with(:gitlab_cache_read_multikey_count, event.payload[:key].size)
subject
end
end
it 'observes read_multi duration' do
expect(subscriber).to receive(:observe)
.with(:read_multi, event.duration)
subject
end
end
describe '#cache_write' do
it 'observes write duration' do
expect(subscriber).to receive(:observe)
.with(:write, event.duration)
subscriber.cache_write(event)
end
end
describe '#cache_delete' do
it 'observes delete duration' do
expect(subscriber).to receive(:observe)
.with(:delete, event.duration)
subscriber.cache_delete(event)
end
end
describe '#cache_exist?' do
it 'observes the exists duration' do
expect(subscriber).to receive(:observe)
.with(:exists, event.duration)
subscriber.cache_exist?(event)
end
end
describe '#cache_fetch_hit' do
context 'without a transaction' do
it 'returns' do
expect(transaction).not_to receive(:increment)
subscriber.cache_fetch_hit(event)
end
end
context 'with a transaction' do
before do
allow(subscriber).to receive(:current_transaction)
.and_return(transaction)
end
it 'increments the cache_read_hit count' do
expect(transaction).to receive(:increment)
.with(:gitlab_transaction_cache_read_hit_count_total, 1)
subscriber.cache_fetch_hit(event)
end
end
end
describe '#cache_generate' do
context 'without a transaction' do
it 'returns' do
expect(transaction).not_to receive(:increment)
subscriber.cache_generate(event)
end
end
context 'with a transaction' do
before do
allow(subscriber).to receive(:current_transaction)
.and_return(transaction)
end
it 'increments the cache_fetch_miss count and cache_read_miss total' do
expect(transaction).to receive(:increment).with(:gitlab_cache_misses_total, 1)
expect(transaction).to receive(:increment)
.with(:gitlab_transaction_cache_read_miss_count_total, 1)
subscriber.cache_generate(event)
end
end
end
describe '#observe' do
context 'without a transaction' do
it 'returns' do
expect(transaction).not_to receive(:increment)
subscriber.observe(:foo, 15.2)
end
end
context 'with a transaction' do
before do
allow(subscriber).to receive(:current_transaction)
.and_return(transaction)
end
it 'observes cache metric' do
expect(subscriber.send(:metric_cache_operation_duration_seconds))
.to receive(:observe)
.with({ operation: :delete }, event.duration / 1000.0)
subscriber.observe(:delete, event.duration)
end
it 'increments the operations total' do
expect(transaction)
.to receive(:increment)
.with(:gitlab_cache_operations_total, 1, { operation: :delete })
subscriber.observe(:delete, event.duration)
end
end
end
end
|