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-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- 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; version 2 of the License.
--
-- 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 St, Fifth Floor, Boston, MA 02110-1301 USA
DROP PROCEDURE IF EXISTS ps_setup_reload_saved;
DELIMITER $$
CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_reload_saved ()
COMMENT '
Description
-----------
Reloads a saved Performance Schema configuration,
so that you can alter the setup for debugging purposes,
but restore it to a previous state.
Use the companion procedure - ps_setup_save(), to
save a configuration.
Requires the SUPER privilege for "SET sql_log_bin = 0;".
Parameters
-----------
None.
Example
-----------
mysql> CALL sys.ps_setup_save();
Query OK, 0 rows affected (0.08 sec)
mysql> UPDATE performance_schema.setup_instruments SET enabled = \'YES\', timed = \'YES\';
Query OK, 547 rows affected (0.40 sec)
Rows matched: 784 Changed: 547 Warnings: 0
/* Run some tests that need more detailed instrumentation here */
mysql> CALL sys.ps_setup_reload_saved();
Query OK, 0 rows affected (0.32 sec)
'
SQL SECURITY INVOKER
NOT DETERMINISTIC
MODIFIES SQL DATA
BEGIN
DECLARE v_done bool DEFAULT FALSE;
DECLARE v_lock_result INT;
DECLARE v_lock_used_by BIGINT;
DECLARE v_signal_message TEXT;
DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
SIGNAL SQLSTATE VALUE '90001'
SET MESSAGE_TEXT = 'An error occurred, was sys.ps_setup_save() run before this procedure?';
END;
SET @log_bin := @@sql_log_bin;
SET sql_log_bin = 0;
SELECT IS_USED_LOCK('sys.ps_setup_save') INTO v_lock_used_by;
IF (v_lock_used_by != CONNECTION_ID()) THEN
SET v_signal_message = CONCAT('The sys.ps_setup_save lock is currently owned by ', v_lock_used_by);
SIGNAL SQLSTATE VALUE '90002'
SET MESSAGE_TEXT = v_signal_message;
END IF;
DELETE FROM performance_schema.setup_actors;
INSERT INTO performance_schema.setup_actors SELECT * FROM tmp_setup_actors;
BEGIN
-- Workaround for http://bugs.mysql.com/bug.php?id=70025
DECLARE v_name varchar(64);
DECLARE v_enabled enum('YES', 'NO');
DECLARE c_consumers CURSOR FOR SELECT NAME, ENABLED FROM tmp_setup_consumers;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;
SET v_done = FALSE;
OPEN c_consumers;
c_consumers_loop: LOOP
FETCH c_consumers INTO v_name, v_enabled;
IF v_done THEN
LEAVE c_consumers_loop;
END IF;
UPDATE performance_schema.setup_consumers
SET ENABLED = v_enabled
WHERE NAME = v_name;
END LOOP;
CLOSE c_consumers;
END;
UPDATE performance_schema.setup_instruments
INNER JOIN tmp_setup_instruments USING (NAME)
SET performance_schema.setup_instruments.ENABLED = tmp_setup_instruments.ENABLED,
performance_schema.setup_instruments.TIMED = tmp_setup_instruments.TIMED;
BEGIN
-- Workaround for http://bugs.mysql.com/bug.php?id=70025
DECLARE v_thread_id bigint unsigned;
DECLARE v_instrumented enum('YES', 'NO');
DECLARE c_threads CURSOR FOR SELECT THREAD_ID, INSTRUMENTED FROM tmp_threads;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;
SET v_done = FALSE;
OPEN c_threads;
c_threads_loop: LOOP
FETCH c_threads INTO v_thread_id, v_instrumented;
IF v_done THEN
LEAVE c_threads_loop;
END IF;
UPDATE performance_schema.threads
SET INSTRUMENTED = v_instrumented
WHERE THREAD_ID = v_thread_id;
END LOOP;
CLOSE c_threads;
END;
UPDATE performance_schema.threads
SET INSTRUMENTED = IF(PROCESSLIST_USER IS NOT NULL,
sys.ps_is_account_enabled(PROCESSLIST_HOST, PROCESSLIST_USER),
'YES')
WHERE THREAD_ID NOT IN (SELECT THREAD_ID FROM tmp_threads);
DROP TEMPORARY TABLE tmp_setup_actors;
DROP TEMPORARY TABLE tmp_setup_consumers;
DROP TEMPORARY TABLE tmp_setup_instruments;
DROP TEMPORARY TABLE tmp_threads;
SELECT RELEASE_LOCK('sys.ps_setup_save') INTO v_lock_result;
SET sql_log_bin = @log_bin;
END$$
DELIMITER ;
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