/* Copyright (c) 2014, 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 */

/*
 * View: user_summary_by_file_io_type
 *
 * Summarizes file IO by event type per user.
 *
 * When the user found is NULL, it is assumed to be a "background" thread.
 *
 * mysql> select * from user_summary_by_file_io_type;
 * +------------+--------------------------------------+-------+-----------+-------------+
 * | user       | event_name                           | total | latency   | max_latency |
 * +------------+--------------------------------------+-------+-----------+-------------+
 * | background | wait/io/file/sql/FRM                 |   871 | 168.15 ms | 18.48 ms    |
 * | background | wait/io/file/innodb/innodb_data_file |   173 | 129.56 ms | 34.09 ms    |
 * | background | wait/io/file/innodb/innodb_log_file  |    20 | 77.53 ms  | 60.66 ms    |
 * | background | wait/io/file/myisam/dfile            |    40 | 6.54 ms   | 4.58 ms     |
 * | background | wait/io/file/mysys/charset           |     3 | 4.79 ms   | 4.71 ms     |
 * | background | wait/io/file/myisam/kfile            |    67 | 4.38 ms   | 300.04 us   |
 * | background | wait/io/file/sql/ERRMSG              |     5 | 2.72 ms   | 1.69 ms     |
 * | background | wait/io/file/sql/pid                 |     3 | 266.30 us | 185.47 us   |
 * | background | wait/io/file/sql/casetest            |     5 | 246.81 us | 150.19 us   |
 * | background | wait/io/file/sql/global_ddl_log      |     2 | 21.24 us  | 18.59 us    |
 * | root       | wait/io/file/sql/file_parser         |  1422 | 4.80 s    | 135.14 ms   |
 * | root       | wait/io/file/sql/FRM                 |   865 | 85.82 ms  | 9.81 ms     |
 * | root       | wait/io/file/myisam/kfile            |  1073 | 37.14 ms  | 15.79 ms    |
 * | root       | wait/io/file/myisam/dfile            |  2991 | 25.53 ms  | 5.25 ms     |
 * | root       | wait/io/file/sql/dbopt               |    20 | 1.07 ms   | 153.07 us   |
 * | root       | wait/io/file/sql/misc                |     4 | 59.71 us  | 33.75 us    |
 * | root       | wait/io/file/archive/data            |     1 | 13.91 us  | 13.91 us    |
 * +------------+--------------------------------------+-------+-----------+-------------+
 *
 */

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'root'@'localhost'
  SQL SECURITY INVOKER 
VIEW user_summary_by_file_io_type (
  user,
  event_name,
  total,
  latency,
  max_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS latency,
       sys.format_time(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name LIKE 'wait/io/file%'
   AND count_star > 0
 ORDER BY user, sum_timer_wait DESC;

/*
 * View: x$user_summary_by_file_io_type
 *
 * Summarizes file IO by event type per user.
 *
 * When the user found is NULL, it is assumed to be a "background" thread.
 *
 * mysql> select * from x$user_summary_by_file_io_type;
 * +------------+--------------------------------------+-------+---------------+--------------+
 * | user       | event_name                           | total | latency       | max_latency  |
 * +------------+--------------------------------------+-------+---------------+--------------+
 * | background | wait/io/file/sql/FRM                 |   871 |  168148450470 |  18482624810 |
 * | background | wait/io/file/innodb/innodb_data_file |   173 |  129564287450 |  34087423890 |
 * | background | wait/io/file/innodb/innodb_log_file  |    20 |   77525706960 |  60657475320 |
 * | background | wait/io/file/myisam/dfile            |    40 |    6544493800 |   4580546230 |
 * | background | wait/io/file/mysys/charset           |     3 |    4793558770 |   4713476430 |
 * | background | wait/io/file/myisam/kfile            |    67 |    4384332810 |    300035450 |
 * | background | wait/io/file/sql/ERRMSG              |     5 |    2717434850 |   1687316280 |
 * | background | wait/io/file/sql/pid                 |     3 |     266301490 |    185468920 |
 * | background | wait/io/file/sql/casetest            |     5 |     246814360 |    150193030 |
 * | background | wait/io/file/sql/global_ddl_log      |     2 |      21236410 |     18593640 |
 * | root       | wait/io/file/sql/file_parser         |  1422 | 4801104756760 | 135138518970 |
 * | root       | wait/io/file/sql/FRM                 |   865 |   85818594810 |   9812303410 |
 * | root       | wait/io/file/myisam/kfile            |  1073 |   37143664870 |  15793838190 |
 * | root       | wait/io/file/myisam/dfile            |  2991 |   25528215700 |   5252232050 |
 * | root       | wait/io/file/sql/dbopt               |    20 |    1067339780 |    153073310 |
 * | root       | wait/io/file/sql/misc                |     4 |      59713030 |     33752810 |
 * | root       | wait/io/file/archive/data            |     1 |      13907530 |     13907530 |
 * +------------+--------------------------------------+-------+---------------+--------------+
 *
 */

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'root'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$user_summary_by_file_io_type (
  user,
  event_name,
  total,
  latency,
  max_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name,
       count_star AS total,
       sum_timer_wait AS latency,
       max_timer_wait AS max_latency
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name LIKE 'wait/io/file%'
   AND count_star > 0
 ORDER BY user, sum_timer_wait DESC;
