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
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::PostgresPartitionedTable, type: :model do
let_it_be(:foo_range_table_name) { '_test_gitlab_main_foo_range' }
let_it_be(:foo_list_table_name) { '_test_gitlab_main_foo_list' }
let_it_be(:foo_hash_table_name) { '_test_gitlab_main_foo_hash' }
let_it_be(:schema) { 'public' }
let_it_be(:name) { foo_range_table_name }
let_it_be(:identifier) { "#{schema}.#{name}" }
before_all do
ActiveRecord::Base.connection.execute(<<~SQL)
CREATE TABLE #{schema}.#{foo_range_table_name} (
id serial NOT NULL,
created_at timestamptz NOT NULL,
PRIMARY KEY (id, created_at)
) PARTITION BY RANGE(created_at);
CREATE TABLE #{schema}.#{foo_list_table_name} (
id serial NOT NULL,
row_type text NOT NULL,
PRIMARY KEY (id, row_type)
) PARTITION BY LIST(row_type);
CREATE TABLE #{schema}.#{foo_hash_table_name} (
id serial NOT NULL,
row_value int NOT NULL,
PRIMARY KEY (id, row_value)
) PARTITION BY HASH (row_value);
SQL
end
def find(identifier)
described_class.by_identifier(identifier)
end
describe 'associations' do
it { is_expected.to have_many(:postgres_partitions).with_primary_key('identifier').with_foreign_key('parent_identifier') }
end
it_behaves_like 'a postgres model'
describe '.find_by_name_in_current_schema' do
it 'finds the partitioned tables in the current schema by name', :aggregate_failures do
partitioned_table = described_class.find_by_name_in_current_schema(name)
expect(partitioned_table).not_to be_nil
expect(partitioned_table.identifier).to eq(identifier)
end
it 'does not find partitioned tables in a different schema' do
ActiveRecord::Base.connection.execute(<<~SQL)
ALTER TABLE #{identifier} SET SCHEMA gitlab_partitions_dynamic
SQL
expect(described_class.find_by_name_in_current_schema(name)).to be_nil
end
end
describe '.each_partition' do
context 'without partitions' do
it 'does not yield control' do
expect { |b| described_class.each_partition(name, &b) }.not_to yield_control
end
end
context 'with partitions' do
let(:partition_schema) { 'gitlab_partitions_dynamic' }
let(:partition1_name) { "#{partition_schema}.#{name}_202001" }
let(:partition2_name) { "#{partition_schema}.#{name}_202002" }
before do
ActiveRecord::Base.connection.execute(<<~SQL)
CREATE TABLE #{partition1_name} PARTITION OF #{identifier}
FOR VALUES FROM ('2020-01-01') TO ('2020-02-01');
CREATE TABLE #{partition2_name} PARTITION OF #{identifier}
FOR VALUES FROM ('2020-02-01') TO ('2020-03-01');
SQL
end
it 'yields control with partition as argument' do
args = Gitlab::Database::PostgresPartition
.where(identifier: [partition1_name, partition2_name])
.order(:name).to_a
expect { |b| described_class.each_partition(name, &b) }.to yield_successive_args(*args)
end
end
end
describe '#dynamic?' do
it 'returns true for tables partitioned by range' do
expect(find("#{schema}.#{foo_range_table_name}")).to be_dynamic
end
it 'returns true for tables partitioned by list' do
expect(find("#{schema}.#{foo_list_table_name}")).to be_dynamic
end
it 'returns false for tables partitioned by hash' do
expect(find("#{schema}.#{foo_hash_table_name}")).not_to be_dynamic
end
end
describe '#static?' do
it 'returns false for tables partitioned by range' do
expect(find("#{schema}.#{foo_range_table_name}")).not_to be_static
end
it 'returns false for tables partitioned by list' do
expect(find("#{schema}.#{foo_list_table_name}")).not_to be_static
end
it 'returns true for tables partitioned by hash' do
expect(find("#{schema}.#{foo_hash_table_name}")).to be_static
end
end
describe '#strategy' do
it 'returns the partitioning strategy' do
expect(find(identifier).strategy).to eq('range')
end
end
describe '#key_columns' do
it 'returns the partitioning key columns' do
expect(find(identifier).key_columns).to match_array(['created_at'])
end
end
end
|
