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
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Instrumentation::RedisBase, :request_store do
let(:instrumentation_class_a) do
stub_const('InstanceA', Class.new(described_class))
end
let(:instrumentation_class_b) do
stub_const('InstanceB', Class.new(described_class))
end
describe '.storage_key' do
it 'returns the class name with underscore' do
expect(instrumentation_class_a.storage_key).to eq('instance_a')
expect(instrumentation_class_b.storage_key).to eq('instance_b')
end
end
describe '.known_payload_keys' do
it 'returns generated payload keys' do
expect(instrumentation_class_a.known_payload_keys).to eq([:redis_instance_a_calls,
:redis_instance_a_duration_s,
:redis_instance_a_read_bytes,
:redis_instance_a_write_bytes])
end
it 'does not call calculation methods' do
expect(instrumentation_class_a).not_to receive(:get_request_count)
expect(instrumentation_class_a).not_to receive(:query_time)
expect(instrumentation_class_a).not_to receive(:read_bytes)
expect(instrumentation_class_a).not_to receive(:write_bytes)
instrumentation_class_a.known_payload_keys
end
end
describe '.payload' do
it 'returns values that are higher than 0' do
allow(instrumentation_class_a).to receive(:get_request_count) { 1 }
allow(instrumentation_class_a).to receive(:query_time) { 0.1 }
allow(instrumentation_class_a).to receive(:read_bytes) { 0.0 }
allow(instrumentation_class_a).to receive(:write_bytes) { 123 }
expected_payload = {
redis_instance_a_calls: 1,
redis_instance_a_write_bytes: 123,
redis_instance_a_duration_s: 0.1
}
expect(instrumentation_class_a.payload).to eq(expected_payload)
end
end
describe '.add_duration' do
it 'does not lose precision while adding' do
precision = 1.0 / (10**::Gitlab::InstrumentationHelper::DURATION_PRECISION)
2.times { instrumentation_class_a.add_duration(0.4 * precision) }
# 2 * 0.4 should be 0.8 and get rounded to 1
expect(instrumentation_class_a.query_time).to eq(1 * precision)
end
context 'storage key overlapping' do
it 'keys do not overlap across storages' do
instrumentation_class_a.add_duration(0.4)
instrumentation_class_b.add_duration(0.5)
expect(instrumentation_class_a.query_time).to eq(0.4)
expect(instrumentation_class_b.query_time).to eq(0.5)
end
end
end
describe '.increment_request_count' do
context 'storage key overlapping' do
it 'keys do not overlap across storages' do
3.times { instrumentation_class_a.increment_request_count }
2.times { instrumentation_class_b.increment_request_count }
expect(instrumentation_class_a.get_request_count).to eq(3)
expect(instrumentation_class_b.get_request_count).to eq(2)
end
end
end
describe '.increment_write_bytes' do
context 'storage key overlapping' do
it 'keys do not overlap across storages' do
2.times do
instrumentation_class_a.increment_write_bytes(42)
instrumentation_class_b.increment_write_bytes(77)
end
expect(instrumentation_class_a.write_bytes).to eq(42 * 2)
expect(instrumentation_class_b.write_bytes).to eq(77 * 2)
end
end
end
describe '.increment_read_bytes' do
context 'storage key overlapping' do
it 'keys do not overlap across storages' do
2.times do
instrumentation_class_a.increment_read_bytes(42)
instrumentation_class_b.increment_read_bytes(77)
end
expect(instrumentation_class_a.read_bytes).to eq(42 * 2)
expect(instrumentation_class_b.read_bytes).to eq(77 * 2)
end
end
end
describe '.add_call_details' do
before do
allow(Gitlab::PerformanceBar).to receive(:enabled_for_request?) { true }
end
context 'storage key overlapping' do
it 'keys do not overlap across storages' do
2.times do
instrumentation_class_a.add_call_details(0.3, [:set])
instrumentation_class_b.add_call_details(0.4, [:set])
end
expect(instrumentation_class_a.detail_store).to match(
[
a_hash_including(cmd: :set, duration: 0.3, backtrace: an_instance_of(Array)),
a_hash_including(cmd: :set, duration: 0.3, backtrace: an_instance_of(Array))
]
)
expect(instrumentation_class_b.detail_store).to match(
[
a_hash_including(cmd: :set, duration: 0.4, backtrace: an_instance_of(Array)),
a_hash_including(cmd: :set, duration: 0.4, backtrace: an_instance_of(Array))
]
)
end
end
end
end
|