MySQL Event历史记录
需求
SQL Server的作业历史(Job)记录是保存在msdb库中的,很方便就查询相关的Job定义,计划和历史记录,而MySQL的event却没有历史记录。为方便查看event是否正常执行以及执行结果,通过以下两个步骤来实现类似的功能。
实现
1. 在mysql库创建event执行的历史记录表
CREATE TABLE `mysql`.`udf_event_history` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `event_gid` varchar(36) NOT NULL, `db_name` varchar(128) NOT NULL DEFAULT "", `event_name` varchar(128) NOT NULL DEFAULT "", `start_time` datetime(3) NOT NULL DEFAULT current_timestamp(), `end_time` datetime(3) DEFAULT NULL, `is_success` tinyint(4) DEFAULT 0, `duration` decimal(15,3) DEFAULT NULL, `error_msg` varchar(512) DEFAULT NULL, PRIMARY KEY (`id`), UNIQUE KEY `idx_event_git` (`event_gid`), KEY `idx_db_event_name` (`db_name`,`event_name`), KEY `idx_s_e_time` (`start_time`,`end_time`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
2.根据以下建模板创建event
请注意根据实际情况修改相关信息
USE db1; DELIMITER $$ CREATE DEFINER=`root`@`localhost` EVENT `event_test1` ON SCHEDULE EVERY 1 MINUTE STARTS "2019-01-01 00:00:00" ON COMPLETION PRESERVE ENABLE DO BEGIN DECLARE r_code CHAR(5) DEFAULT "00000"; DECLARE r_msg TEXT; DECLARE v_error INT; DECLARE v_start_time DATETIME(3) DEFAULT NOW(3); DECLARE v_event_gid VARCHAR(36) DEFAULT UPPER(REPLACE(UUID(),"-","")); /*修改为实际的event名*/ INSERT INTO mysql.udf_event_history (db_name, event_name, start_time, event_gid) VALUES(DATABASE(), "event_test1", v_start_time, v_event_gid); BEGIN DECLARE CONTINUE HANDLER FOR SQLEXCEPTION BEGIN SET v_error = 1; GET DIAGNOSTICS CONDITION 1 r_code = RETURNED_SQLSTATE, r_msg = MESSAGE_TEXT; END; /*实际要执行语句或存储过程,等*/ CALL db1.usp_1(); END; UPDATE mysql.udf_event_history SET end_time = NOW(3), is_success = ISNULL(v_error), duration = TIMESTAMPDIFF(microsecond,start_time, NOW(3)) / 1000000, error_msg = CONCAT("error = ", r_code,", message = ", r_msg) WHERE event_gid = v_event_gid; END$$ DELIMITER ;
通过查询mysql.udf_event_history表,可以知道event的开始结束时间、是否成功、执行时长、错误信息,等,为管理日常调度计划提供方便。
root@localhost [db1]select * from mysql.udf_event_history limit 2G; *************************** 1. row *************************** id: 1 db_name: db1 event_name: event_test1 start_time: 2019-12-03 15:44:00.000 end_time: 2019-12-03 15:44:00.001 is_success: 0 duration: 0.001 error_msg: error = 42000, message = PROCEDURE db1.usp_2 does not exist event_gid: AB305D8C15A011EAB822005056AB041E *************************** 2. row *************************** id: 2 db_name: db1 event_name: event_test2 start_time: 2019-12-03 15:46:00.000 end_time: 2019-12-03 15:46:05.405 is_success: 1 duration: 5.405 error_msg: NULL event_gid: F2B6197C15A011EAB822005056AB041E
参考