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
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Memory::ReportsDaemon do
let(:daemon) { described_class.new }
describe '#run_thread' do
let(:report_duration_counter) { instance_double(::Prometheus::Client::Counter) }
let(:file_size) { 1_000_000 }
before do
allow(Gitlab::Metrics).to receive(:counter).and_return(report_duration_counter)
allow(report_duration_counter).to receive(:increment)
# make sleep no-op
allow(daemon).to receive(:sleep) {}
# let alive return 3 times: true, true, false
allow(daemon).to receive(:alive).and_return(true, true, false)
allow(File).to receive(:size).with(/#{daemon.reports_path}.*\.json/).and_return(file_size)
end
it 'runs reports' do
expect(daemon.send(:reports)).to all(receive(:run).twice.and_call_original)
daemon.send(:run_thread)
end
it 'logs report execution' do
expect(::Prometheus::PidProvider).to receive(:worker_id).at_least(:once).and_return('worker_1')
expect(Gitlab::AppLogger).to receive(:info).with(
hash_including(
:duration_s,
:cpu_s,
perf_report_size_bytes: file_size,
message: 'finished',
pid: Process.pid,
worker_id: 'worker_1',
perf_report: 'jemalloc_stats'
)).twice
daemon.send(:run_thread)
end
context 'when the report object returns invalid file path' do
before do
allow(File).to receive(:size).with(/#{daemon.reports_path}.*\.json/).and_raise(Errno::ENOENT)
end
it 'logs `0` as `perf_report_size_bytes`' do
expect(Gitlab::AppLogger).to receive(:info).with(hash_including(perf_report_size_bytes: 0)).twice
daemon.send(:run_thread)
end
end
it 'sets real time duration gauge' do
expect(report_duration_counter).to receive(:increment).with({ report: 'jemalloc_stats' }, an_instance_of(Float))
daemon.send(:run_thread)
end
it 'allows configure and run multiple reports' do
# rubocop: disable RSpec/VerifiedDoubles
# We test how ReportsDaemon could be extended in the future
# We configure it with new reports classes which are not yet defined so we cannot make this an instance_double.
active_report_1 = double("Active Report 1", active?: true)
active_report_2 = double("Active Report 2", active?: true)
inactive_report = double("Inactive Report", active?: false)
# rubocop: enable RSpec/VerifiedDoubles
allow(daemon).to receive(:reports).and_return([active_report_1, inactive_report, active_report_2])
expect(active_report_1).to receive(:run).and_return('/tmp/report_1.json').twice
expect(active_report_2).to receive(:run).and_return('/tmp/report_2.json').twice
expect(inactive_report).not_to receive(:run)
daemon.send(:run_thread)
end
context 'sleep timers logic' do
it 'wakes up every (fixed interval + defined delta), sleeps between reports each cycle' do
stub_env('GITLAB_DIAGNOSTIC_REPORTS_SLEEP_MAX_DELTA_S', 1) # rand(1) == 0, so we will have fixed sleep interval
daemon = described_class.new
allow(daemon).to receive(:alive).and_return(true, true, false)
expect(daemon).to receive(:sleep).with(described_class::DEFAULT_SLEEP_S).ordered
expect(daemon).to receive(:sleep).with(described_class::DEFAULT_SLEEP_BETWEEN_REPORTS_S).ordered
expect(daemon).to receive(:sleep).with(described_class::DEFAULT_SLEEP_S).ordered
expect(daemon).to receive(:sleep).with(described_class::DEFAULT_SLEEP_BETWEEN_REPORTS_S).ordered
daemon.send(:run_thread)
end
end
end
describe '#stop_working' do
it 'changes :alive to false' do
expect { daemon.send(:stop_working) }.to change { daemon.send(:alive) }.from(true).to(false)
end
end
context 'timer intervals settings' do
context 'when no settings are set in the environment' do
it 'uses defaults' do
daemon = described_class.new
expect(daemon.sleep_s).to eq(described_class::DEFAULT_SLEEP_S)
expect(daemon.sleep_max_delta_s).to eq(described_class::DEFAULT_SLEEP_MAX_DELTA_S)
expect(daemon.sleep_between_reports_s).to eq(described_class::DEFAULT_SLEEP_BETWEEN_REPORTS_S)
expect(daemon.reports_path).to eq(described_class::DEFAULT_REPORTS_PATH)
end
end
context 'when settings are passed through the environment' do
before do
stub_env('GITLAB_DIAGNOSTIC_REPORTS_SLEEP_S', 100)
stub_env('GITLAB_DIAGNOSTIC_REPORTS_SLEEP_MAX_DELTA_S', 50)
stub_env('GITLAB_DIAGNOSTIC_REPORTS_SLEEP_BETWEEN_REPORTS_S', 2)
stub_env('GITLAB_DIAGNOSTIC_REPORTS_PATH', '/empty-dir')
end
it 'uses provided values' do
daemon = described_class.new
expect(daemon.sleep_s).to eq(100)
expect(daemon.sleep_max_delta_s).to eq(50)
expect(daemon.sleep_between_reports_s).to eq(2)
expect(daemon.reports_path).to eq('/empty-dir')
end
end
end
end
|