From cd881ab169b60b125e274548778c86252094ac7a Mon Sep 17 00:00:00 2001 From: eileencodes Date: Wed, 12 Jun 2019 14:08:43 -0400 Subject: Move while_preventing_writes from conn to handler If we put the `while_preventing_writes` on the connection then the middleware that sends reads to the primary and ensures they can't write will not work. The `while_preventing_writes` will only be applied to the connection which it's called on - which in the case of the middleware is Ar::Base. This worked fine if you called it directly like `OtherDbConn.connection.while_preventing_writes` but Rails didn't have a way of knowing you wanted to call it on all the connections. The change here moves the `while_preventing_writes` method from the connection to the handler so that it can block writes to all queries for that handler. This will apply to all the connections associated with that handler. --- .../test/cases/adapters/mysql2/mysql2_adapter_test.rb | 17 +++++++++-------- .../adapters/postgresql/postgresql_adapter_test.rb | 15 ++++++++------- .../test/cases/adapters/sqlite3/sqlite3_adapter_test.rb | 14 ++++++++------ 3 files changed, 25 insertions(+), 21 deletions(-) (limited to 'activerecord/test/cases/adapters') diff --git a/activerecord/test/cases/adapters/mysql2/mysql2_adapter_test.rb b/activerecord/test/cases/adapters/mysql2/mysql2_adapter_test.rb index 9364fabb35..e1f7a0b7c5 100644 --- a/activerecord/test/cases/adapters/mysql2/mysql2_adapter_test.rb +++ b/activerecord/test/cases/adapters/mysql2/mysql2_adapter_test.rb @@ -8,6 +8,7 @@ class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase def setup @conn = ActiveRecord::Base.connection + @connection_handler = ActiveRecord::Base.connection_handler end def test_exec_query_nothing_raises_with_no_result_queries @@ -148,7 +149,7 @@ class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase def test_errors_when_an_insert_query_is_called_while_preventing_writes assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.insert("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')") end end @@ -158,7 +159,7 @@ class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase @conn.insert("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.update("UPDATE `engines` SET `engines`.`car_id` = '9989' WHERE `engines`.`car_id` = '138853948594'") end end @@ -168,7 +169,7 @@ class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase @conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.execute("DELETE FROM `engines` where `engines`.`car_id` = '138853948594'") end end @@ -178,7 +179,7 @@ class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase @conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.execute("REPLACE INTO `engines` SET `engines`.`car_id` = '249823948'") end end @@ -187,19 +188,19 @@ class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase def test_doesnt_error_when_a_select_query_is_called_while_preventing_writes @conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')") - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 1, @conn.execute("SELECT `engines`.* FROM `engines` WHERE `engines`.`car_id` = '138853948594'").entries.count end end def test_doesnt_error_when_a_show_query_is_called_while_preventing_writes - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 2, @conn.execute("SHOW FULL FIELDS FROM `engines`").entries.count end end def test_doesnt_error_when_a_set_query_is_called_while_preventing_writes - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_nil @conn.execute("SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci") end end @@ -207,7 +208,7 @@ class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase def test_doesnt_error_when_a_read_query_with_leading_chars_is_called_while_preventing_writes @conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')") - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 1, @conn.execute("(\n( SELECT `engines`.* FROM `engines` WHERE `engines`.`car_id` = '138853948594' ) )").entries.count end end diff --git a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb index bc517cef82..68bc87eaf8 100644 --- a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb +++ b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb @@ -13,6 +13,7 @@ module ActiveRecord def setup @connection = ActiveRecord::Base.connection + @connection_handler = ActiveRecord::Base.connection_handler end def test_bad_connection @@ -379,7 +380,7 @@ module ActiveRecord def test_errors_when_an_insert_query_is_called_while_preventing_writes with_example_table do assert_raises(ActiveRecord::ReadOnlyError) do - @connection.while_preventing_writes do + @connection_handler.while_preventing_writes do @connection.execute("INSERT INTO ex (data) VALUES ('138853948594')") end end @@ -391,7 +392,7 @@ module ActiveRecord @connection.execute("INSERT INTO ex (data) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @connection.while_preventing_writes do + @connection_handler.while_preventing_writes do @connection.execute("UPDATE ex SET data = '9989' WHERE data = '138853948594'") end end @@ -403,7 +404,7 @@ module ActiveRecord @connection.execute("INSERT INTO ex (data) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @connection.while_preventing_writes do + @connection_handler.while_preventing_writes do @connection.execute("DELETE FROM ex where data = '138853948594'") end end @@ -414,20 +415,20 @@ module ActiveRecord with_example_table do @connection.execute("INSERT INTO ex (data) VALUES ('138853948594')") - @connection.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 1, @connection.execute("SELECT * FROM ex WHERE data = '138853948594'").entries.count end end end def test_doesnt_error_when_a_show_query_is_called_while_preventing_writes - @connection.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 1, @connection.execute("SHOW TIME ZONE").entries.count end end def test_doesnt_error_when_a_set_query_is_called_while_preventing_writes - @connection.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal [], @connection.execute("SET standard_conforming_strings = on").entries end end @@ -436,7 +437,7 @@ module ActiveRecord with_example_table do @connection.execute("INSERT INTO ex (data) VALUES ('138853948594')") - @connection.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 1, @connection.execute("(\n( SELECT * FROM ex WHERE data = '138853948594' ) )").entries.count end end diff --git a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb index 22dc0eaad2..508f7d8945 100644 --- a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb +++ b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb @@ -19,6 +19,8 @@ module ActiveRecord @conn = Base.sqlite3_connection database: ":memory:", adapter: "sqlite3", timeout: 100 + + @connection_handler = ActiveRecord::Base.connection_handler end def test_bad_connection @@ -572,7 +574,7 @@ module ActiveRecord def test_errors_when_an_insert_query_is_called_while_preventing_writes with_example_table "id int, data string" do assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.execute("INSERT INTO ex (data) VALUES ('138853948594')") end end @@ -584,7 +586,7 @@ module ActiveRecord @conn.execute("INSERT INTO ex (data) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.execute("UPDATE ex SET data = '9989' WHERE data = '138853948594'") end end @@ -596,7 +598,7 @@ module ActiveRecord @conn.execute("INSERT INTO ex (data) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.execute("DELETE FROM ex where data = '138853948594'") end end @@ -608,7 +610,7 @@ module ActiveRecord @conn.execute("INSERT INTO ex (data) VALUES ('138853948594')") assert_raises(ActiveRecord::ReadOnlyError) do - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do @conn.execute("REPLACE INTO ex (data) VALUES ('249823948')") end end @@ -619,7 +621,7 @@ module ActiveRecord with_example_table "id int, data string" do @conn.execute("INSERT INTO ex (data) VALUES ('138853948594')") - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 1, @conn.execute("SELECT data from ex WHERE data = '138853948594'").count end end @@ -629,7 +631,7 @@ module ActiveRecord with_example_table "id int, data string" do @conn.execute("INSERT INTO ex (data) VALUES ('138853948594')") - @conn.while_preventing_writes do + @connection_handler.while_preventing_writes do assert_equal 1, @conn.execute(" SELECT data from ex WHERE data = '138853948594'").count end end -- cgit v1.2.3