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
|
# frozen_string_literal: true
require 'fast_spec_helper'
require 'prometheus/client'
RSpec.describe Gitlab::Memory::Watchdog::EventReporter, feature_category: :application_performance do
let(:logger) { instance_double(::Logger) }
let(:violations_counter) { instance_double(::Prometheus::Client::Counter) }
let(:violations_handled_counter) { instance_double(::Prometheus::Client::Counter) }
let(:reporter) { described_class.new(logger: logger) }
def stub_prometheus_metrics
allow(Gitlab::Metrics).to receive(:counter)
.with(:gitlab_memwd_violations_total, anything, anything)
.and_return(violations_counter)
allow(Gitlab::Metrics).to receive(:counter)
.with(:gitlab_memwd_violations_handled_total, anything, anything)
.and_return(violations_handled_counter)
allow(violations_counter).to receive(:increment)
allow(violations_handled_counter).to receive(:increment)
end
before do
stub_prometheus_metrics
allow(Gitlab::Metrics::System).to receive(:memory_usage_rss).at_least(:once).and_return(
total: 1024
)
allow(::Prometheus::PidProvider).to receive(:worker_id).and_return('worker_1')
end
describe '#logger' do
context 'when logger is not provided' do
let(:reporter) { described_class.new }
it 'uses default Gitlab::AppLogger' do
expect(reporter.logger).to eq(Gitlab::AppLogger)
end
end
end
describe '#started' do
it 'logs start message once' do
expect(logger).to receive(:info).once
.with(
pid: Process.pid,
worker_id: 'worker_1',
custom_label: 'dummy_label',
memwd_rss_bytes: 1024,
message: 'started')
reporter.started(custom_label: 'dummy_label')
end
end
describe '#stopped' do
subject { reporter.stopped(custom_label: 'dummy_label') }
it 'logs stop message once' do
expect(logger).to receive(:info).once
.with(
pid: Process.pid,
worker_id: 'worker_1',
custom_label: 'dummy_label',
memwd_rss_bytes: 1024,
message: 'stopped')
reporter.stopped(custom_label: 'dummy_label')
end
end
describe '#threshold_violated' do
subject { reporter.threshold_violated(:monitor_name) }
it 'increments violations counter' do
expect(violations_counter).to receive(:increment).with(reason: :monitor_name)
subject
end
it 'does not increment handled violations counter' do
expect(violations_handled_counter).not_to receive(:increment)
subject
end
it 'does not log violation' do
expect(logger).not_to receive(:warn)
subject
end
end
describe '#strikes_exceeded' do
subject { reporter.strikes_exceeded(:monitor_name, { message: 'dummy_text' }) }
before do
allow(logger).to receive(:warn)
end
it 'increments handled violations counter' do
expect(violations_handled_counter).to receive(:increment).with(reason: :monitor_name)
subject
end
it 'logs violation' do
expect(logger).to receive(:warn)
.with({
pid: Process.pid,
worker_id: 'worker_1',
memwd_rss_bytes: 1024,
message: 'dummy_text'
})
subject
end
end
end
|
