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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::PartitioningMigrationHelpers::TableManagementHelpers, feature_category: :database do
include Database::PartitioningHelpers
include Database::TriggerHelpers
include Database::TableSchemaHelpers
include MigrationsHelpers
let(:migration) do
ActiveRecord::Migration.new.extend(described_class)
end
let_it_be(:connection) { ActiveRecord::Base.connection }
let(:source_table) { :_test_original_table }
let(:partitioned_table) { :_test_migration_partitioned_table }
let(:function_name) { :_test_migration_function_name }
let(:trigger_name) { :_test_migration_trigger_name }
let(:partition_column) { 'created_at' }
let(:min_date) { Date.new(2019, 12) }
let(:max_date) { Date.new(2020, 3) }
let(:source_model) { Class.new(ActiveRecord::Base) }
before do
allow(migration).to receive(:puts)
migration.create_table source_table do |t|
t.string :name, null: false
t.integer :age, null: false
t.datetime partition_column
t.datetime :updated_at
end
source_model.table_name = source_table
allow(migration).to receive(:transaction_open?).and_return(false)
allow(migration).to receive(:make_partitioned_table_name).and_return(partitioned_table)
allow(migration).to receive(:make_sync_function_name).and_return(function_name)
allow(migration).to receive(:make_sync_trigger_name).and_return(trigger_name)
allow(migration).to receive(:assert_table_is_allowed)
end
context 'list partitioning conversion helpers' do
shared_examples_for 'delegates to ConvertTable' do
let(:extra_options) { {} }
it 'throws an error if in a transaction' do
allow(migration).to receive(:transaction_open?).and_return(true)
expect { migrate }.to raise_error(/cannot be run inside a transaction/)
end
it 'delegates to a method on List::ConvertTable' do
expect_next_instance_of(Gitlab::Database::Partitioning::List::ConvertTable,
migration_context: migration,
table_name: source_table,
parent_table_name: partitioned_table,
partitioning_column: partition_column,
zero_partition_value: min_date,
**extra_options) do |converter|
expect(converter).to receive(expected_method)
end
migrate
end
end
describe '#convert_table_to_first_list_partition' do
it_behaves_like 'delegates to ConvertTable' do
let(:lock_tables) { [source_table] }
let(:expected_method) { :partition }
let(:migrate) do
migration.convert_table_to_first_list_partition(table_name: source_table,
partitioning_column: partition_column,
parent_table_name: partitioned_table,
initial_partitioning_value: min_date,
lock_tables: lock_tables)
end
end
end
describe '#revert_converting_table_to_first_list_partition' do
it_behaves_like 'delegates to ConvertTable' do
let(:expected_method) { :revert_partitioning }
let(:migrate) do
migration.revert_converting_table_to_first_list_partition(table_name: source_table,
partitioning_column: partition_column,
parent_table_name: partitioned_table,
initial_partitioning_value: min_date)
end
end
end
describe '#prepare_constraint_for_list_partitioning' do
it_behaves_like 'delegates to ConvertTable' do
let(:expected_method) { :prepare_for_partitioning }
let(:migrate) do
migration.prepare_constraint_for_list_partitioning(table_name: source_table,
partitioning_column: partition_column,
parent_table_name: partitioned_table,
initial_partitioning_value: min_date,
async: false)
end
end
end
describe '#revert_preparing_constraint_for_list_partitioning' do
it_behaves_like 'delegates to ConvertTable' do
let(:expected_method) { :revert_preparation_for_partitioning }
let(:migrate) do
migration.revert_preparing_constraint_for_list_partitioning(table_name: source_table,
partitioning_column: partition_column,
parent_table_name: partitioned_table,
initial_partitioning_value: min_date)
end
end
end
end
describe '#partition_table_by_date' do
let(:partition_column) { 'created_at' }
let(:old_primary_key) { 'id' }
let(:new_primary_key) { [old_primary_key, partition_column] }
context 'when the table is not allowed' do
let(:source_table) { :_test_this_table_is_not_allowed }
it 'raises an error' do
expect(migration).to receive(:assert_table_is_allowed).with(source_table).and_call_original
expect do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
end.to raise_error(/#{source_table} is not allowed for use/)
end
end
context 'when run inside a transaction block' do
it 'raises an error' do
expect(migration).to receive(:transaction_open?).and_return(true)
expect do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
end.to raise_error(/can not be run inside a transaction/)
end
end
context 'when the the max_date is less than the min_date' do
let(:max_date) { Time.utc(2019, 6) }
it 'raises an error' do
expect do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
end.to raise_error(/max_date #{max_date} must be greater than min_date #{min_date}/)
end
end
context 'when the max_date is equal to the min_date' do
let(:max_date) { min_date }
it 'raises an error' do
expect do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
end.to raise_error(/max_date #{max_date} must be greater than min_date #{min_date}/)
end
end
context 'when the given table does not have a primary key' do
it 'raises an error' do
migration.execute(<<~SQL)
ALTER TABLE #{source_table}
DROP CONSTRAINT #{source_table}_pkey
SQL
expect do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
end.to raise_error(/primary key not defined for #{source_table}/)
end
end
context 'when an invalid partition column is given' do
let(:invalid_column) { :_this_is_not_real }
it 'raises an error' do
expect do
migration.partition_table_by_date source_table, invalid_column, min_date: min_date, max_date: max_date
end.to raise_error(/partition column #{invalid_column} does not exist/)
end
end
describe 'constructing the partitioned table' do
it 'creates a table partitioned by the proper column' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
expect(connection.table_exists?(partitioned_table)).to be(true)
expect(connection.primary_key(partitioned_table)).to eq(new_primary_key)
expect_table_partitioned_by(partitioned_table, [partition_column])
end
it 'requires the migration helper to be run in DDL mode' do
expect(Gitlab::Database::QueryAnalyzers::RestrictAllowedSchemas).to receive(:require_ddl_mode!)
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
expect(connection.table_exists?(partitioned_table)).to be(true)
expect(connection.primary_key(partitioned_table)).to eq(new_primary_key)
expect_table_partitioned_by(partitioned_table, [partition_column])
end
it 'changes the primary key datatype to bigint' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
pk_column = connection.columns(partitioned_table).find { |c| c.name == old_primary_key }
expect(pk_column.sql_type).to eq('bigint')
end
context 'with a non-integer primary key datatype' do
before do
connection.create_table non_int_table, id: false do |t|
t.string :identifier, primary_key: true
t.timestamp :created_at
end
end
let(:non_int_table) { :_test_another_example }
let(:old_primary_key) { 'identifier' }
it 'does not change the primary key datatype' do
migration.partition_table_by_date non_int_table, partition_column, min_date: min_date, max_date: max_date
original_pk_column = connection.columns(non_int_table).find { |c| c.name == old_primary_key }
pk_column = connection.columns(partitioned_table).find { |c| c.name == old_primary_key }
expect(pk_column).not_to be_nil
expect(pk_column).to eq(original_pk_column)
end
end
it 'removes the default from the primary key column' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
pk_column = connection.columns(partitioned_table).find { |c| c.name == old_primary_key }
expect(pk_column.default_function).to be_nil
end
it 'creates the partitioned table with the same non-key columns' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
copied_columns = filter_columns_by_name(connection.columns(partitioned_table), new_primary_key)
original_columns = filter_columns_by_name(connection.columns(source_table), new_primary_key)
expect(copied_columns).to match_array(original_columns)
end
it 'creates a partition spanning over each month in the range given' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
expect_range_partitions_for(partitioned_table, {
'000000' => ['MINVALUE', "'2019-12-01 00:00:00'"],
'201912' => ["'2019-12-01 00:00:00'", "'2020-01-01 00:00:00'"],
'202001' => ["'2020-01-01 00:00:00'", "'2020-02-01 00:00:00'"],
'202002' => ["'2020-02-01 00:00:00'", "'2020-03-01 00:00:00'"],
'202003' => ["'2020-03-01 00:00:00'", "'2020-04-01 00:00:00'"]
})
end
context 'when min_date is not given' do
context 'with records present already' do
before do
source_model.create!(name: 'Test', age: 10, created_at: Date.parse('2019-11-05'))
end
it 'creates a partition spanning over each month from the first record' do
expect(Gitlab::Database::QueryAnalyzers::RestrictAllowedSchemas).to receive(:with_suppressed).and_yield
migration.partition_table_by_date source_table, partition_column, max_date: max_date
expect_range_partitions_for(partitioned_table, {
'000000' => ['MINVALUE', "'2019-11-01 00:00:00'"],
'201911' => ["'2019-11-01 00:00:00'", "'2019-12-01 00:00:00'"],
'201912' => ["'2019-12-01 00:00:00'", "'2020-01-01 00:00:00'"],
'202001' => ["'2020-01-01 00:00:00'", "'2020-02-01 00:00:00'"],
'202002' => ["'2020-02-01 00:00:00'", "'2020-03-01 00:00:00'"],
'202003' => ["'2020-03-01 00:00:00'", "'2020-04-01 00:00:00'"]
})
end
end
context 'without data' do
it 'creates the catchall partition plus two actual partition' do
expect(Gitlab::Database::QueryAnalyzers::RestrictAllowedSchemas).to receive(:with_suppressed).and_yield
migration.partition_table_by_date source_table, partition_column, max_date: max_date
expect_range_partitions_for(partitioned_table, {
'000000' => ['MINVALUE', "'2020-02-01 00:00:00'"],
'202002' => ["'2020-02-01 00:00:00'", "'2020-03-01 00:00:00'"],
'202003' => ["'2020-03-01 00:00:00'", "'2020-04-01 00:00:00'"]
})
end
end
end
context 'when max_date is not given' do
it 'creates partitions including the next month from today' do
today = Date.new(2020, 5, 8)
travel_to(today) do
migration.partition_table_by_date source_table, partition_column, min_date: min_date
expect_range_partitions_for(partitioned_table, {
'000000' => ['MINVALUE', "'2019-12-01 00:00:00'"],
'201912' => ["'2019-12-01 00:00:00'", "'2020-01-01 00:00:00'"],
'202001' => ["'2020-01-01 00:00:00'", "'2020-02-01 00:00:00'"],
'202002' => ["'2020-02-01 00:00:00'", "'2020-03-01 00:00:00'"],
'202003' => ["'2020-03-01 00:00:00'", "'2020-04-01 00:00:00'"],
'202004' => ["'2020-04-01 00:00:00'", "'2020-05-01 00:00:00'"],
'202005' => ["'2020-05-01 00:00:00'", "'2020-06-01 00:00:00'"],
'202006' => ["'2020-06-01 00:00:00'", "'2020-07-01 00:00:00'"]
})
end
end
end
context 'without min_date, max_date' do
it 'creates partitions for the current and next month' do
current_date = Date.new(2020, 05, 22)
travel_to(current_date.to_time) do
migration.partition_table_by_date source_table, partition_column
expect_range_partitions_for(partitioned_table, {
'000000' => ['MINVALUE', "'2020-05-01 00:00:00'"],
'202005' => ["'2020-05-01 00:00:00'", "'2020-06-01 00:00:00'"],
'202006' => ["'2020-06-01 00:00:00'", "'2020-07-01 00:00:00'"]
})
end
end
end
end
describe 'keeping data in sync with the partitioned table' do
let(:partitioned_model) { Class.new(ActiveRecord::Base) }
let(:timestamp) { Time.utc(2019, 12, 1, 12).round }
before do
partitioned_model.primary_key = :id
partitioned_model.table_name = partitioned_table
end
it 'creates a trigger function on the original table' do
expect_function_not_to_exist(function_name)
expect_trigger_not_to_exist(source_table, trigger_name)
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
expect_function_to_exist(function_name)
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
end
it 'syncs inserts to the partitioned tables' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
expect(partitioned_model.count).to eq(0)
first_record = source_model.create!(name: 'Bob', age: 20, created_at: timestamp, updated_at: timestamp)
second_record = source_model.create!(name: 'Alice', age: 30, created_at: timestamp, updated_at: timestamp)
expect(partitioned_model.count).to eq(2)
expect(partitioned_model.find(first_record.id).attributes).to eq(first_record.attributes)
expect(partitioned_model.find(second_record.id).attributes).to eq(second_record.attributes)
end
it 'syncs updates to the partitioned tables' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
first_record = source_model.create!(name: 'Bob', age: 20, created_at: timestamp, updated_at: timestamp)
second_record = source_model.create!(name: 'Alice', age: 30, created_at: timestamp, updated_at: timestamp)
expect(partitioned_model.count).to eq(2)
first_copy = partitioned_model.find(first_record.id)
second_copy = partitioned_model.find(second_record.id)
expect(first_copy.attributes).to eq(first_record.attributes)
expect(second_copy.attributes).to eq(second_record.attributes)
first_record.update!(age: 21, updated_at: timestamp + 1.hour)
expect(partitioned_model.count).to eq(2)
expect(first_copy.reload.attributes).to eq(first_record.attributes)
expect(second_copy.reload.attributes).to eq(second_record.attributes)
end
it 'syncs deletes to the partitioned tables' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
first_record = source_model.create!(name: 'Bob', age: 20, created_at: timestamp, updated_at: timestamp)
second_record = source_model.create!(name: 'Alice', age: 30, created_at: timestamp, updated_at: timestamp)
expect(partitioned_model.count).to eq(2)
first_record.destroy!
expect(partitioned_model.count).to eq(1)
expect(partitioned_model.find_by_id(first_record.id)).to be_nil
expect(partitioned_model.find(second_record.id).attributes).to eq(second_record.attributes)
end
end
end
describe '#drop_partitioned_table_for' do
let(:expected_tables) do
%w[000000 201912 202001 202002].map { |suffix| "#{Gitlab::Database::DYNAMIC_PARTITIONS_SCHEMA}.#{partitioned_table}_#{suffix}" }.unshift(partitioned_table)
end
let(:migration_class) { 'Gitlab::Database::PartitioningMigrationHelpers::BackfillPartitionedTable' }
context 'when the table is not allowed' do
let(:source_table) { :_test_this_table_is_not_allowed }
it 'raises an error' do
expect(migration).to receive(:assert_table_is_allowed).with(source_table).and_call_original
expect do
migration.drop_partitioned_table_for source_table
end.to raise_error(/#{source_table} is not allowed for use/)
end
end
it 'drops the trigger syncing to the partitioned table' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
expect_function_to_exist(function_name)
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
migration.drop_partitioned_table_for source_table
expect_function_not_to_exist(function_name)
expect_trigger_not_to_exist(source_table, trigger_name)
end
it 'drops the partitioned copy and all partitions' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
expected_tables.each do |table|
expect(connection.table_exists?(table)).to be(true)
end
migration.drop_partitioned_table_for source_table
expected_tables.each do |table|
expect(connection.table_exists?(table)).to be(false)
end
end
end
describe '#enqueue_partitioning_data_migration' do
context 'when the table is not allowed' do
let(:source_table) { :_test_this_table_is_not_allowed }
it 'raises an error' do
expect(migration).to receive(:assert_table_is_allowed).with(source_table).and_call_original
expect do
migration.enqueue_partitioning_data_migration source_table
end.to raise_error(/#{source_table} is not allowed for use/)
end
end
context 'when run inside a transaction block' do
it 'raises an error' do
expect(migration).to receive(:transaction_open?).and_return(true)
expect do
migration.enqueue_partitioning_data_migration source_table
end.to raise_error(/can not be run inside a transaction/)
end
end
context 'when records exist in the source table' do
let(:migration_class) { described_class::MIGRATION }
let(:sub_batch_size) { described_class::SUB_BATCH_SIZE }
let!(:first_id) { source_model.create!(name: 'Bob', age: 20).id }
let!(:second_id) { source_model.create!(name: 'Alice', age: 30).id }
let!(:third_id) { source_model.create!(name: 'Sam', age: 40).id }
before do
stub_const("#{described_class.name}::BATCH_SIZE", 2)
stub_const("#{described_class.name}::SUB_BATCH_SIZE", 1)
end
it 'enqueues jobs to copy each batch of data' do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
Sidekiq::Testing.fake! do
migration.enqueue_partitioning_data_migration source_table
expect(migration_class).to have_scheduled_batched_migration(
table_name: source_table,
column_name: :id,
job_arguments: [partitioned_table],
batch_size: described_class::BATCH_SIZE,
sub_batch_size: described_class::SUB_BATCH_SIZE
)
end
end
end
end
describe '#cleanup_partitioning_data_migration' do
context 'when the table is not allowed' do
let(:source_table) { :_test_this_table_is_not_allowed }
it 'raises an error' do
expect(migration).to receive(:assert_table_is_allowed).with(source_table).and_call_original
expect do
migration.cleanup_partitioning_data_migration source_table
end.to raise_error(/#{source_table} is not allowed for use/)
end
end
context 'when tracking records exist in the batched_background_migrations table' do
let(:migration_class) { described_class::MIGRATION }
before do
create(
:batched_background_migration,
job_class_name: migration_class,
table_name: source_table,
column_name: :id,
job_arguments: [partitioned_table]
)
create(
:batched_background_migration,
job_class_name: migration_class,
table_name: 'other_table',
column_name: :id,
job_arguments: ['other_table_partitioned']
)
end
it 'deletes those pertaining to the given table' do
expect { migration.cleanup_partitioning_data_migration(source_table) }
.to change { ::Gitlab::Database::BackgroundMigration::BatchedMigration.count }.by(-1)
expect(::Gitlab::Database::BackgroundMigration::BatchedMigration.where(table_name: 'other_table').any?)
.to be_truthy
expect(::Gitlab::Database::BackgroundMigration::BatchedMigration.where(table_name: source_table).any?)
.to be_falsy
end
end
end
describe '#create_hash_partitions' do
before do
connection.execute(<<~SQL)
CREATE TABLE #{partitioned_table}
(id serial not null, some_id integer not null, PRIMARY KEY (id, some_id))
PARTITION BY HASH (some_id);
SQL
end
it 'creates partitions for the full hash space (8 partitions)' do
partitions = 8
migration.create_hash_partitions(partitioned_table, partitions)
(0..partitions - 1).each do |partition|
partition_name = "#{partitioned_table}_#{"%01d" % partition}"
expect_hash_partition_of(partition_name, partitioned_table, partitions, partition)
end
end
it 'creates partitions for the full hash space (16 partitions)' do
partitions = 16
migration.create_hash_partitions(partitioned_table, partitions)
(0..partitions - 1).each do |partition|
partition_name = "#{partitioned_table}_#{"%02d" % partition}"
expect_hash_partition_of(partition_name, partitioned_table, partitions, partition)
end
end
end
describe '#finalize_backfilling_partitioned_table' do
let(:source_column) { :id }
context 'when the table is not allowed' do
let(:source_table) { :_test_this_table_is_not_allowed }
it 'raises an error' do
expect(migration).to receive(:assert_table_is_allowed).with(source_table).and_call_original
expect do
migration.finalize_backfilling_partitioned_table source_table
end.to raise_error(/#{source_table} is not allowed for use/)
end
end
context 'when the partitioned table does not exist' do
it 'raises an error' do
expect(migration).to receive(:table_exists?).with(partitioned_table).and_return(false)
expect do
migration.finalize_backfilling_partitioned_table source_table
end.to raise_error(/could not find partitioned table for #{source_table}/)
end
end
context 'finishing pending batched background migration jobs' do
let(:source_table_double) { double('table name') }
let(:raw_arguments) { [1, 50_000, source_table_double, partitioned_table, source_column] }
let(:background_job) { double('background job', args: ['background jobs', raw_arguments]) }
let(:bbm_arguments) do
{
job_class_name: described_class::MIGRATION,
table_name: source_table,
column_name: connection.primary_key(source_table),
job_arguments: [partitioned_table]
}
end
before do
allow(migration).to receive(:table_exists?).with(partitioned_table).and_return(true)
allow(migration).to receive(:execute).with(/VACUUM/)
allow(migration).to receive(:execute).with(/^(RE)?SET/)
end
it 'ensures finishing of remaining jobs and vacuums the partitioned table' do
expect(migration).to receive(:ensure_batched_background_migration_is_finished)
.with(bbm_arguments)
expect(Gitlab::Database::QueryAnalyzers::RestrictAllowedSchemas).to receive(:with_suppressed).and_yield
expect(migration).to receive(:disable_statement_timeout).and_call_original
expect(migration).to receive(:execute).with("VACUUM FREEZE ANALYZE #{partitioned_table}")
migration.finalize_backfilling_partitioned_table source_table
end
end
end
describe '#replace_with_partitioned_table' do
let(:archived_table) { "#{source_table}_archived" }
before do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
end
it 'replaces the original table with the partitioned table' do
expect(table_type(source_table)).to eq('normal')
expect(table_type(partitioned_table)).to eq('partitioned')
expect(table_type(archived_table)).to be_nil
expect_table_to_be_replaced { migration.replace_with_partitioned_table(source_table) }
expect(table_type(source_table)).to eq('partitioned')
expect(table_type(archived_table)).to eq('normal')
expect(table_type(partitioned_table)).to be_nil
end
it 'moves the trigger from the original table to the new table' do
expect_function_to_exist(function_name)
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
expect_table_to_be_replaced { migration.replace_with_partitioned_table(source_table) }
expect_function_to_exist(function_name)
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
end
def expect_table_to_be_replaced(&block)
super(original_table: source_table, replacement_table: partitioned_table, archived_table: archived_table, &block)
end
end
describe '#rollback_replace_with_partitioned_table' do
let(:archived_table) { "#{source_table}_archived" }
before do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
migration.replace_with_partitioned_table source_table
end
it 'replaces the partitioned table with the non-partitioned table' do
expect(table_type(source_table)).to eq('partitioned')
expect(table_type(archived_table)).to eq('normal')
expect(table_type(partitioned_table)).to be_nil
expect_table_to_be_replaced { migration.rollback_replace_with_partitioned_table(source_table) }
expect(table_type(source_table)).to eq('normal')
expect(table_type(partitioned_table)).to eq('partitioned')
expect(table_type(archived_table)).to be_nil
end
it 'moves the trigger from the partitioned table to the non-partitioned table' do
expect_function_to_exist(function_name)
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
expect_table_to_be_replaced { migration.rollback_replace_with_partitioned_table(source_table) }
expect_function_to_exist(function_name)
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
end
def expect_table_to_be_replaced(&block)
super(original_table: source_table, replacement_table: archived_table, archived_table: partitioned_table, &block)
end
end
describe '#drop_nonpartitioned_archive_table' do
subject { migration.drop_nonpartitioned_archive_table source_table }
let(:archived_table) { "#{source_table}_archived" }
before do
migration.partition_table_by_date source_table, partition_column, min_date: min_date, max_date: max_date
migration.replace_with_partitioned_table source_table
end
it 'drops the archive table' do
expect(table_type(archived_table)).to eq('normal')
subject
expect(table_type(archived_table)).to eq(nil)
end
it 'drops the trigger on the source table' do
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
subject
expect_trigger_not_to_exist(source_table, trigger_name)
end
it 'drops the sync function' do
expect_function_to_exist(function_name)
subject
expect_function_not_to_exist(function_name)
end
end
describe '#create_trigger_to_sync_tables' do
subject { migration.create_trigger_to_sync_tables(source_table, target_table, :id) }
let(:target_table) { "#{source_table}_copy" }
before do
migration.create_table target_table do |t|
t.string :name, null: false
t.integer :age, null: false
t.datetime partition_column
t.datetime :updated_at
end
end
it 'creates the sync function' do
expect_function_not_to_exist(function_name)
subject
expect_function_to_exist(function_name)
end
it 'installs the trigger' do
expect_trigger_not_to_exist(source_table, trigger_name)
subject
expect_valid_function_trigger(source_table, trigger_name, function_name, after: %w[delete insert update])
end
end
def filter_columns_by_name(columns, names)
columns.reject { |c| names.include?(c.name) }
end
end
|