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
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::BackgroundMigration::BatchedMigrationWrapper, '#perform' do
subject(:perform) { described_class.new(connection: connection, metrics: metrics_tracker).perform(job_record) }
let(:connection) { Gitlab::Database.database_base_models[:main].connection }
let(:metrics_tracker) { instance_double('::Gitlab::Database::BackgroundMigration::PrometheusMetrics', track: nil) }
let(:job_class) { Class.new(Gitlab::BackgroundMigration::BatchedMigrationJob) }
let(:sub_batch_exception) { Gitlab::Database::BackgroundMigration::SubBatchTimeoutError }
let_it_be(:pause_ms) { 250 }
let_it_be(:active_migration) { create(:batched_background_migration, :active, job_arguments: [:id, :other_id]) }
let!(:job_record) do
create(:batched_background_migration_job, batched_migration: active_migration, pause_ms: pause_ms)
end
let(:job_instance) { instance_double('Gitlab::BackgroundMigration::BatchedMigrationJob') }
around do |example|
Gitlab::Database::SharedModel.using_connection(connection) do
example.run
end
end
before do
allow(active_migration).to receive(:job_class).and_return(job_class)
allow(job_class).to receive(:new).and_return(job_instance)
end
it 'runs the migration job' do
expect(job_class).to receive(:new)
.with(start_id: 1,
end_id: 10,
batch_table: 'events',
batch_column: 'id',
sub_batch_size: 1,
pause_ms: pause_ms,
job_arguments: active_migration.job_arguments,
connection: connection,
sub_batch_exception: sub_batch_exception)
.and_return(job_instance)
expect(job_instance).to receive(:perform).with(no_args)
perform
end
it 'updates the tracking record in the database' do
test_metrics = { 'my_metrics' => 'some value' }
expect(job_instance).to receive(:perform).with(no_args)
expect(job_instance).to receive(:batch_metrics).and_return(test_metrics)
freeze_time do
perform
reloaded_job_record = job_record.reload
expect(reloaded_job_record).not_to be_pending
expect(reloaded_job_record.attempts).to eq(1)
expect(reloaded_job_record.started_at).to eq(Time.current)
expect(reloaded_job_record.metrics).to eq(test_metrics)
end
end
context 'when running a job that failed previously' do
let!(:job_record) do
create(:batched_background_migration_job, :failed,
batched_migration: active_migration,
pause_ms: pause_ms,
attempts: 1,
finished_at: 1.hour.ago,
metrics: { 'my_metrics' => 'some_value' }
)
end
it 'increments attempts and updates other fields' do
updated_metrics = { 'updated_metrics' => 'some_value' }
expect(job_instance).to receive(:perform).with(no_args)
expect(job_instance).to receive(:batch_metrics).and_return(updated_metrics)
freeze_time do
perform
job_record.reload
expect(job_record).not_to be_failed
expect(job_record.attempts).to eq(2)
expect(job_record.started_at).to eq(Time.current)
expect(job_record.finished_at).to eq(Time.current)
expect(job_record.metrics).to eq(updated_metrics)
end
end
end
context 'when the migration job does not raise an error' do
it 'marks the tracking record as succeeded' do
expect(job_instance).to receive(:perform).with(no_args)
freeze_time do
perform
reloaded_job_record = job_record.reload
expect(reloaded_job_record).to be_succeeded
expect(reloaded_job_record.finished_at).to eq(Time.current)
end
end
it 'tracks metrics of the execution' do
expect(job_instance).to receive(:perform).with(no_args)
expect(metrics_tracker).to receive(:track).with(job_record)
perform
end
end
context 'when the migration job raises an error' do
shared_examples 'an error is raised' do |error_class, cause|
let(:expected_to_raise) { cause || error_class }
it 'marks the tracking record as failed' do
expect(job_instance).to receive(:perform).with(no_args).and_raise(error_class)
freeze_time do
expect { perform }.to raise_error(expected_to_raise)
reloaded_job_record = job_record.reload
expect(reloaded_job_record).to be_failed
expect(reloaded_job_record.finished_at).to eq(Time.current)
end
end
it 'tracks metrics of the execution' do
expect(job_instance).to receive(:perform).with(no_args).and_raise(error_class)
expect(metrics_tracker).to receive(:track).with(job_record)
expect { perform }.to raise_error(expected_to_raise)
end
end
it_behaves_like 'an error is raised', RuntimeError.new('Something broke!')
it_behaves_like 'an error is raised', SignalException.new('SIGTERM')
it_behaves_like 'an error is raised', ActiveRecord::StatementTimeout.new('Timeout!')
error = StandardError.new
it_behaves_like('an error is raised', Gitlab::Database::BackgroundMigration::SubBatchTimeoutError.new(error), error)
end
context 'when the batched background migration does not inherit from BatchedMigrationJob' do
let(:job_class) { Class.new }
let(:job_instance) { job_class.new }
it 'runs the job with the correct arguments' do
expect(job_class).to receive(:new).with(no_args).and_return(job_instance)
expect(Gitlab::ApplicationContext).to receive(:push).with(feature_category: :database)
expect(job_instance).to receive(:perform).with(1, 10, 'events', 'id', 1, pause_ms, 'id', 'other_id')
perform
end
end
end
|