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
|
# frozen_string_literal: true
# Redmine - project management software
# Copyright (C) 2006- Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
require_relative '../test_helper'
class IssueNestedSetConcurrencyTest < ActiveSupport::TestCase
self.use_transactional_tests = false
def setup
skip if sqlite?
if mysql?
connection = ActiveRecord::Base.connection_db_config.configuration_hash.deep_dup
connection[:variables] = mysql8? ? { transaction_isolation: "READ-COMMITTED" } : { tx_isolation: "READ-COMMITTED" }
ActiveRecord::Base.establish_connection connection
end
User.current = nil
CustomField.destroy_all
end
def teardown
Issue.delete_all
end
def test_concurrency
# Generates an issue and destroys it in order
# to load all needed classes before starting threads
i = Issue.generate!
i.destroy
root = Issue.generate!
assert_difference 'Issue.count', 60 do
threaded(3) do
10.times do
i = Issue.generate! :parent_issue_id => root.id
c1 = Issue.generate! :parent_issue_id => i.id
c2 = Issue.generate! :parent_issue_id => i.id
c3 = Issue.generate! :parent_issue_id => i.id
c2.reload.destroy
c1.reload.destroy
end
end
end
end
def test_concurrent_subtasks_creation
root = Issue.generate!
assert_difference 'Issue.count', 30 do
threaded(3) do
10.times do
Issue.generate! :parent_issue_id => root.id
end
end
end
root.reload
assert_equal [1, 62], [root.lft, root.rgt]
children_bounds = root.children.sort_by(&:lft).map {|c| [c.lft, c.rgt]}.flatten
assert_equal (2..61).to_a, children_bounds
end
def test_concurrent_subtask_removal
with_settings :notified_events => [] do
root = Issue.generate!
60.times do
Issue.generate! :parent_issue_id => root.id
end
# pick 40 random subtask ids
child_ids = Issue.where(root_id: root.id, parent_id: root.id).pluck(:id)
ids_to_remove = child_ids.sample(40).shuffle
ids_to_keep = child_ids - ids_to_remove
# remove these from the set, using four parallel threads
threads = []
ids_to_remove.each_slice(10) do |ids|
threads << Thread.new do
ActiveRecord::Base.connection_pool.with_connection do
begin
ids.each do |id|
Issue.find(id).update(parent_id: nil)
end
rescue => e
Thread.current[:exception] = e.message
end
end
end
end
threads.each do |thread|
thread.join
assert_nil thread[:exception]
end
assert_equal 20, Issue.where(parent_id: root.id).count
Issue.where(id: ids_to_remove).each do |issue|
assert_nil issue.parent_id
assert_equal issue.id, issue.root_id
assert_equal 1, issue.lft
assert_equal 2, issue.rgt
end
root.reload
assert_equal [1, 42], [root.lft, root.rgt]
children_bounds = root.children.sort_by(&:lft).map {|c| [c.lft, c.rgt]}.flatten
assert_equal (2..41).to_a, children_bounds
end
end
private
def threaded(count, &)
with_settings :notified_events => [] do
threads = []
count.times do |i|
threads << Thread.new(i) do
ActiveRecord::Base.connection_pool.with_connection do
begin
yield
rescue => e
Thread.current[:exception] = e.message
end
end
end
end
threads.each do |thread|
thread.join
assert_nil thread[:exception]
end
end
end
end
|
