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体验新版 GitCode,发现更多精彩内容 >>
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f63df2bd
编写于
8月 16, 2019
作者:
R
Rafael França
提交者:
Rafael Mendonça França
8月 16, 2019
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Merge pull request #36949 from 97jaz/thread-local-prepared-statements
Make prepared statement status thread and instance-specific
上级
97f9609d
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
61 addition
and
9 deletion
+61
-9
activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
...lib/active_record/connection_adapters/abstract_adapter.rb
+9
-7
activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb
...d/lib/active_record/connection_adapters/mysql2_adapter.rb
+2
-2
activerecord/test/cases/prepared_statement_status_test.rb
activerecord/test/cases/prepared_statement_status_test.rb
+50
-0
未找到文件。
activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
浏览文件 @
f63df2bd
...
...
@@ -11,6 +11,7 @@
require
"arel/collectors/composite"
require
"arel/collectors/sql_string"
require
"arel/collectors/substitute_binds"
require
"concurrent/atomic/thread_local_var"
module
ActiveRecord
module
ConnectionAdapters
# :nodoc:
...
...
@@ -78,7 +79,7 @@ class AbstractAdapter
SIMPLE_INT
=
/\A\d+\z/
attr_accessor
:pool
attr_reader
:visitor
,
:owner
,
:logger
,
:lock
,
:prepared_statements
attr_reader
:visitor
,
:owner
,
:logger
,
:lock
alias
:in_use?
:owner
set_callback
:checkin
,
:after
,
:enable_lazy_transactions!
...
...
@@ -129,10 +130,10 @@ def initialize(connection, logger = nil, config = {}) # :nodoc:
@lock
=
ActiveSupport
::
Concurrency
::
LoadInterlockAwareMonitor
.
new
if
self
.
class
.
type_cast_config_to_boolean
(
config
.
fetch
(
:prepared_statements
)
{
true
})
@prepared_statement
s
=
true
@prepared_statement
_status
=
Concurrent
::
ThreadLocalVar
.
new
(
true
)
@visitor
.
extend
(
DetermineIfPreparableVisitor
)
else
@prepared_statement
s
=
false
@prepared_statement
_status
=
Concurrent
::
ThreadLocalVar
.
new
(
false
)
end
@advisory_locks_enabled
=
self
.
class
.
type_cast_config_to_boolean
(
...
...
@@ -175,6 +176,10 @@ def schema_migration # :nodoc:
end
end
def
prepared_statements
@prepared_statement_status
.
value
end
class
Version
include
Comparable
...
...
@@ -259,10 +264,7 @@ def seconds_idle # :nodoc:
end
def
unprepared_statement
old_prepared_statements
,
@prepared_statements
=
@prepared_statements
,
false
yield
ensure
@prepared_statements
=
old_prepared_statements
@prepared_statement_status
.
bind
(
false
)
{
yield
}
end
# Returns the human-readable name of the adapter. Use mixed case - one
...
...
activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb
浏览文件 @
f63df2bd
...
...
@@ -39,8 +39,8 @@ class Mysql2Adapter < AbstractMysqlAdapter
include
MySQL
::
DatabaseStatements
def
initialize
(
connection
,
logger
,
connection_options
,
config
)
super
@prepared_statements
=
false
unless
config
.
key?
(
:prepared_statements
)
super
class_config
=
config
.
reverse_merge
(
prepared_statements:
false
)
super
(
connection
,
logger
,
connection_options
,
superclass_config
)
configure_connection
end
...
...
activerecord/test/cases/prepared_statement_status_test.rb
0 → 100644
浏览文件 @
f63df2bd
# frozen_string_literal: true
require
"cases/helper"
require
"models/course"
require
"models/entrant"
module
ActiveRecord
class
PreparedStatementStatusTest
<
ActiveRecord
::
TestCase
def
test_prepared_statement_status_is_thread_and_instance_specific
course_conn
=
Course
.
connection
entrant_conn
=
Entrant
.
connection
inside
=
Concurrent
::
Event
.
new
preventing
=
Concurrent
::
Event
.
new
finished
=
Concurrent
::
Event
.
new
assert_not_same
course_conn
,
entrant_conn
if
current_adapter?
(
:Mysql2Adapter
)
# The mysql adapter does not use prepared
# statements by default.
assert_not
course_conn
.
prepared_statements
assert_not
entrant_conn
.
prepared_statements
else
t1
=
Thread
.
new
do
course_conn
.
unprepared_statement
do
inside
.
set
preventing
.
wait
assert_not
course_conn
.
prepared_statements
assert
entrant_conn
.
prepared_statements
finished
.
set
end
end
t2
=
Thread
.
new
do
entrant_conn
.
unprepared_statement
do
inside
.
wait
assert
course_conn
.
prepared_statements
assert_not
entrant_conn
.
prepared_statements
preventing
.
set
finished
.
wait
end
end
t1
.
join
t2
.
join
end
end
end
end
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