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Commit 8d4f74be authored by unknown's avatar unknown
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- final fixes for bug#16431 (Events: An event which alters itself disappears) 

- fix for bug#16423 (Events: SHOW CREATE EVENT doesn't work)
- this Changeset commits makes CREATE/UPDATE/DELETE EVENT real DDL statements
  by committing the currently open transaction before they are executed.
- this Changeset also fixes a trailing space problem since the very early days
  of the internal cron
- adds sophisticated checking of whether mysql.event was tampered accidentally
  or with purpose by an user.
- adds a lot of inline function documentation - documents everything left
  uncodumented
- INTERVAL_XXXX to XXX in I_S.EVENTS.INTERVAL_FIELD

WL#1034 (Internal CRON)


mysql-test/r/events.result:
  update result
mysql-test/t/events.test:
  add test cases for SHOW CREATE EVENT
  add test cases where the structure of mysql.event is changed and error reporting in this case
sql/event.cc:
  - do a lot more checking on mysql.event whether it's valid
    introduced generic function table_check_intact() which can be used also
    for checking whether a system table (mysql.*) has been tampered by user
    and report an error in this case. The checking is quite strict, thus
    maybe some mechanism can be added later that loosens this like some
    session variable, for instance, i_am_aware_that_i_can_damage_my_data
    so the table will be opened nevertheless we think that it's not valid.
  - add evex_show_create_event(THD *thd, sp_name *spn, LEX_STRING definer)
  - document a loooot. not a single function left undocumented.
sql/event.h:
  - add evex_show_create_event(THD *thd, sp_name *spn, LEX_STRING definer)
  - change get_show_create_event() to get_create_event()
  - add TABLE_FIELD_W_TYPE used by table_check_intact()
  - add event_timed::sql_mode so it can be used by show create event. currently
    always 0, will be fixed by a patch for another bug. At least makes the code
    of show create event complete.
sql/event_executor.cc:
  - add evex_check_system_tables() that checks on boot and event
    main thread startup that mysql.db and mysql.user tables are correct.
  - document everything!
sql/event_priv.h:
  remove a line
sql/event_timed.cc:
  - implement SHOW CREATE EVENT
  - document undocumented functions!
sql/share/errmsg.txt:
  - fix an error message and add two new
sql/sql_acl.cc:
  - add mysql.db table definition to use by table_check_intact()
  - exchange some of the positions by numbers from mysql.db to enum names (see sql_acl.h)
sql/sql_acl.h:
  - define the structure of mysql.db table
sql/sql_parse.cc:
  - handle SQLCOM_SHOW_CREATE_EVENT
  - end the current transaction becase CREATE/UPDATE/DELETE EVENT is a DDL
    statement
sql/sql_show.cc:
  - remove interval_type_to_name
  - use common function event_reconstruct_interval_expression()
    that reconstructs the expression given at create/alter, to some
    extent - interval of 2:62 MINUTE_SECOND will be reconstructed as
    interval of 3:02 MINUTE_SECOND!
sql/sql_yacc.yy:
  init the definer of event_timed also when doing SHOW CREATE EVENT
  because it's needed for checking into mysql.event
sql/table.cc:
  - remove stale code. only mysql.event should be a 'system_table'
  - add table_check_intact() to check the consistency of a table.
    mostly usable with mysql.xxx tables.
sql/table.h:
  - export TABLE_FIELD_W_TYPE and table_check_intact() which are used for 
    checking the structure of a table. mostly usable for mysql.xxx tables.
parent 80c60741
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mysql-test/r/events.result
View file @ 8d4f74be
......@@ -41,13 +41,178 @@ count(*)
0
drop event event3;
drop table t_event3;
set names utf8;
CREATE EVENT root6 ON SCHEDULE EVERY '10:20' MINUTE_SECOND ON COMPLETION PRESERVE ENABLE COMMENT 'some comment' DO select 1;
SHOW CREATE EVENT root6;
Event sql_mode Create Event
root6 CREATE EVENT `events_test`.`root6` ON SCHEDULE EVERY '10:20' MINUTE_SECOND ON COMPLETION PRESERVE ENABLE COMMENT 'some comment' DO select 1
create event root7 on schedule every 2 year do select 1;
SHOW CREATE EVENT root7;
Event sql_mode Create Event
root7 CREATE EVENT `events_test`.`root7` ON SCHEDULE EVERY 2 YEAR ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root8 on schedule every '2:5' year_month do select 1;
SHOW CREATE EVENT root8;
Event sql_mode Create Event
root8 CREATE EVENT `events_test`.`root8` ON SCHEDULE EVERY '2-5' YEAR_MONTH ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root8_1 on schedule every '2:15' year_month do select 1;
SHOW CREATE EVENT root8_1;
Event sql_mode Create Event
root8_1 CREATE EVENT `events_test`.`root8_1` ON SCHEDULE EVERY '3-3' YEAR_MONTH ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root9 on schedule every 2 week ON COMPLETION PRESERVE DISABLE COMMENT 'коментар на кирилица' do select 1;
SHOW CREATE EVENT root9;
Event sql_mode Create Event
root9 CREATE EVENT `events_test`.`root9` ON SCHEDULE EVERY 2 WEEK ON COMPLETION PRESERVE DISABLE COMMENT 'коментар на кирилица' DO select 1
create event root10 on schedule every '20:5' day_hour do select 1;
SHOW CREATE EVENT root10;
Event sql_mode Create Event
root10 CREATE EVENT `events_test`.`root10` ON SCHEDULE EVERY '20 5' DAY_HOUR ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root11 on schedule every '20:25' day_hour do select 1;
SHOW CREATE EVENT root11;
Event sql_mode Create Event
root11 CREATE EVENT `events_test`.`root11` ON SCHEDULE EVERY '21 1' DAY_HOUR ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root12 on schedule every '20:25' hour_minute do select 1;
SHOW CREATE EVENT root12;
Event sql_mode Create Event
root12 CREATE EVENT `events_test`.`root12` ON SCHEDULE EVERY '20:25' HOUR_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root13 on schedule every '25:25' hour_minute do select 1;
SHOW CREATE EVENT root13;
Event sql_mode Create Event
root13 CREATE EVENT `events_test`.`root13` ON SCHEDULE EVERY '25:25' HOUR_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root13_1 on schedule every '11:65' hour_minute do select 1;
SHOW CREATE EVENT root13_1;
Event sql_mode Create Event
root13_1 CREATE EVENT `events_test`.`root13_1` ON SCHEDULE EVERY '12:5' HOUR_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root14 on schedule every '35:35' minute_second do select 1;
SHOW CREATE EVENT root14;
Event sql_mode Create Event
root14 CREATE EVENT `events_test`.`root14` ON SCHEDULE EVERY '35:35' MINUTE_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root15 on schedule every '35:66' minute_second do select 1;
SHOW CREATE EVENT root15;
Event sql_mode Create Event
root15 CREATE EVENT `events_test`.`root15` ON SCHEDULE EVERY '36:6' MINUTE_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root16 on schedule every '35:56' day_minute do select 1;
SHOW CREATE EVENT root16;
Event sql_mode Create Event
root16 CREATE EVENT `events_test`.`root16` ON SCHEDULE EVERY '1 11:56' DAY_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root17 on schedule every '35:12:45' day_minute do select 1;
SHOW CREATE EVENT root17;
Event sql_mode Create Event
root17 CREATE EVENT `events_test`.`root17` ON SCHEDULE EVERY '35 12:45' DAY_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root17_1 on schedule every '35:25:65' day_minute do select 1;
SHOW CREATE EVENT root17_1;
Event sql_mode Create Event
root17_1 CREATE EVENT `events_test`.`root17_1` ON SCHEDULE EVERY '36 2:5' DAY_MINUTE ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root18 on schedule every '35:12:45' hour_second do select 1;
SHOW CREATE EVENT root18;
Event sql_mode Create Event
root18 CREATE EVENT `events_test`.`root18` ON SCHEDULE EVERY '35:12:45' HOUR_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root19 on schedule every '15:59:85' hour_second do select 1;
SHOW CREATE EVENT root19;
Event sql_mode Create Event
root19 CREATE EVENT `events_test`.`root19` ON SCHEDULE EVERY '16:0:25' HOUR_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1
create event root20 on schedule every '50:20:12:45' day_second do select 1;
SHOW CREATE EVENT root20;
Event sql_mode Create Event
root20 CREATE EVENT `events_test`.`root20` ON SCHEDULE EVERY '50 20:12:45' DAY_SECOND ON COMPLETION NOT PRESERVE ENABLE DO select 1
set names cp1251;
create event ðóóò21 on schedule every '50:23:59:95' day_second COMMENT 'òîâà å 1251 êîìåíòàð' do select 1;
SHOW CREATE EVENT ðóóò21;
Event sql_mode Create Event
ðóóò21 CREATE EVENT `events_test`.`ðóóò21` ON SCHEDULE EVERY '51 0:0:35' DAY_SECOND ON COMPLETION NOT PRESERVE ENABLE COMMENT 'òîâà å 1251 êîìåíòàð' DO select 1
insert into mysql.event (db, name, body, definer, interval_value, interval_field) values (database(), "root22", "select 1", user(), 100, "SECOND_MICROSECOND");
show create event root22;
ERROR HY000: Microseconds intervals are not yet supported
SHOW EVENTS;
ERROR HY000: Microseconds intervals are not yet supported
drop event root22;
drop event root6;
drop event root7;
drop event root8;
drop event root8_1;
drop event root9;
drop event root10;
drop event root11;
drop event root12;
drop event root13;
drop event root13_1;
drop event root14;
drop event root15;
drop event root16;
drop event root17;
drop event root17_1;
drop event root18;
drop event root19;
drop event root20;
drop event ðóóò21;
set names latin1;
CREATE EVENT intact_check ON SCHEDULE EVERY 10 HOUR DO SELECT "nothing";
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test intact_check root@localhost RECURRING NULL 10 10 HOUR # # ENABLED
ALTER TABLE mysql.event ADD dummy INT FIRST;
SHOW EVENTS;
ERROR HY000: Column count of mysql.event is wrong. Table probably corrupted. Expected 15, found 16.
ALTER TABLE mysql.event DROP dummy, ADD dummy2 VARCHAR(64) FIRST;
SHOW EVENTS;
ERROR HY000: Column count of mysql.event is wrong. Table probably corrupted. Expected 15, found 16.
ALTER TABLE mysql.event DROP dummy2;
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test intact_check root@localhost RECURRING NULL 10 10 HOUR # # ENABLED
CREATE TABLE event_like LIKE mysql.event;
INSERT INTO event_like SELECT * FROM mysql.event;
ALTER TABLE mysql.event MODIFY db char(20) character set utf8 collate utf8_bin default '';
SHOW CREATE TABLE mysql.event;
Table Create Table
event CREATE TABLE `event` (
`db` char(20) character set utf8 collate utf8_bin NOT NULL default '',
`name` char(64) character set utf8 collate utf8_bin NOT NULL default '',
`body` longblob NOT NULL,
`definer` char(77) character set utf8 collate utf8_bin NOT NULL default '',
`execute_at` datetime default NULL,
`interval_value` int(11) default NULL,
`interval_field` enum('YEAR','QUARTER','MONTH','DAY','HOUR','MINUTE','WEEK','SECOND','MICROSECOND','YEAR_MONTH','DAY_HOUR','DAY_MINUTE','DAY_SECOND','HOUR_MINUTE','HOUR_SECOND','MINUTE_SECOND','DAY_MICROSECOND','HOUR_MICROSECOND','MINUTE_MICROSECOND','SECOND_MICROSECOND') default NULL,
`created` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
`modified` timestamp NOT NULL default '0000-00-00 00:00:00',
`last_executed` datetime default NULL,
`starts` datetime default NULL,
`ends` datetime default NULL,
`status` enum('ENABLED','DISABLED') NOT NULL default 'ENABLED',
`on_completion` enum('DROP','PRESERVE') NOT NULL default 'DROP',
`comment` char(64) character set utf8 collate utf8_bin NOT NULL default '',
PRIMARY KEY (`definer`,`db`,`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events'
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log.
ALTER TABLE mysql.event MODIFY db char(64) character set utf8 collate utf8_bin default '';
"This should work"
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test intact_check root@localhost RECURRING NULL 10 10 HOUR # # ENABLED
ALTER TABLE mysql.event MODIFY db char(64) character set cp1251 default '';
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log.
ALTER TABLE mysql.event MODIFY db varchar(64) character set utf8 collate utf8_bin default '';
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log.
ALTER TABLE mysql.event DROP comment, DROP starts;
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
ERROR HY000: Column count of mysql.event is wrong. Table probably corrupted. Expected 15, found 13.
DROP TABLE mysql.event;
CREATE TABLE mysql.event like event_like;
INSERT INTO mysql.event SELECT * FROM event_like;
DROP TABLE event_like;
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test intact_check root@localhost RECURRING NULL 10 10 HOUR # # ENABLED
DROP EVENT intact_check;
create event one_event on schedule every 10 second do select 123;
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test one_event root@localhost RECURRING NULL 10 INTERVAL_SECOND # # ENABLED
events_test one_event root@localhost RECURRING NULL 10 10 SECOND # # ENABLED
SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT from information_schema.events;
EVENT_CATALOG EVENT_SCHEMA EVENT_NAME DEFINER EVENT_BODY EVENT_TYPE EXECUTE_AT INTERVAL_VALUE INTERVAL_FIELD STATUS ON_COMPLETION EVENT_COMMENT
NULL events_test one_event root@localhost select 123 RECURRING NULL 10 INTERVAL_SECOND ENABLED NOT PRESERVE
NULL events_test one_event root@localhost select 123 RECURRING NULL 10 10 SECOND ENABLED NOT PRESERVE
CREATE DATABASE events_test2;
CREATE USER ev_test@localhost;
GRANT ALL ON events_test.* to ev_test@localhost;
......@@ -81,20 +246,20 @@ create event three_event on schedule every 20 second on completion preserve comm
"Now we should see 3 events:";
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test one_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test one_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
"This should show us only 3 events:";
SHOW FULL EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test one_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test one_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
"This should show us only 2 events:";
SHOW FULL EVENTS LIKE 't%event';
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test three_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
"This should show us no events:";
SHOW FULL EVENTS FROM test LIKE '%';
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
......@@ -102,20 +267,20 @@ DROP DATABASE events_test2;
"should see 1 event:";
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test one_event root@localhost RECURRING NULL 10 INTERVAL_SECOND # # ENABLED
events_test one_event root@localhost RECURRING NULL 10 10 SECOND # # ENABLED
"we should see 4 events now:";
SHOW FULL EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test one_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 INTERVAL_SECOND # # ENABLED
events_test one_event root@localhost RECURRING NULL 10 INTERVAL_SECOND # # ENABLED
events_test one_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 20 SECOND # # ENABLED
events_test one_event root@localhost RECURRING NULL 10 10 SECOND # # ENABLED
SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT from information_schema.events;
EVENT_CATALOG EVENT_SCHEMA EVENT_NAME DEFINER EVENT_BODY EVENT_TYPE EXECUTE_AT INTERVAL_VALUE INTERVAL_FIELD STATUS ON_COMPLETION EVENT_COMMENT
NULL events_test one_event ev_test@localhost select 123 RECURRING NULL 20 INTERVAL_SECOND ENABLED NOT PRESERVE
NULL events_test three_event ev_test@localhost select 123 RECURRING NULL 20 INTERVAL_SECOND ENABLED PRESERVE three event
NULL events_test two_event ev_test@localhost select 123 RECURRING NULL 20 INTERVAL_SECOND ENABLED NOT PRESERVE two event
NULL events_test one_event root@localhost select 123 RECURRING NULL 10 INTERVAL_SECOND ENABLED NOT PRESERVE
NULL events_test one_event ev_test@localhost select 123 RECURRING NULL 20 20 SECOND ENABLED NOT PRESERVE
NULL events_test three_event ev_test@localhost select 123 RECURRING NULL 20 20 SECOND ENABLED PRESERVE three event
NULL events_test two_event ev_test@localhost select 123 RECURRING NULL 20 20 SECOND ENABLED NOT PRESERVE two event
NULL events_test one_event root@localhost select 123 RECURRING NULL 10 10 SECOND ENABLED NOT PRESERVE
drop event one_event;
drop event two_event;
drop event three_event;
......
mysql-test/t/events.test
View file @ 8d4f74be
......@@ -33,6 +33,138 @@ select count(*) from t_event3;
drop event event3;
drop table t_event3;
set names utf8;
#
# SHOW CREATE EVENT test begin
#
CREATE EVENT root6 ON SCHEDULE EVERY '10:20' MINUTE_SECOND ON COMPLETION PRESERVE ENABLE COMMENT 'some comment' DO select 1;
SHOW CREATE EVENT root6;
create event root7 on schedule every 2 year do select 1;
SHOW CREATE EVENT root7;
create event root8 on schedule every '2:5' year_month do select 1;
SHOW CREATE EVENT root8;
create event root8_1 on schedule every '2:15' year_month do select 1;
SHOW CREATE EVENT root8_1;
create event root9 on schedule every 2 week ON COMPLETION PRESERVE DISABLE COMMENT 'коментар на кирилица' do select 1;
SHOW CREATE EVENT root9;
create event root10 on schedule every '20:5' day_hour do select 1;
SHOW CREATE EVENT root10;
create event root11 on schedule every '20:25' day_hour do select 1;
SHOW CREATE EVENT root11;
create event root12 on schedule every '20:25' hour_minute do select 1;
SHOW CREATE EVENT root12;
create event root13 on schedule every '25:25' hour_minute do select 1;
SHOW CREATE EVENT root13;
create event root13_1 on schedule every '11:65' hour_minute do select 1;
SHOW CREATE EVENT root13_1;
create event root14 on schedule every '35:35' minute_second do select 1;
SHOW CREATE EVENT root14;
create event root15 on schedule every '35:66' minute_second do select 1;
SHOW CREATE EVENT root15;
create event root16 on schedule every '35:56' day_minute do select 1;
SHOW CREATE EVENT root16;
create event root17 on schedule every '35:12:45' day_minute do select 1;
SHOW CREATE EVENT root17;
create event root17_1 on schedule every '35:25:65' day_minute do select 1;
SHOW CREATE EVENT root17_1;
create event root18 on schedule every '35:12:45' hour_second do select 1;
SHOW CREATE EVENT root18;
create event root19 on schedule every '15:59:85' hour_second do select 1;
SHOW CREATE EVENT root19;
create event root20 on schedule every '50:20:12:45' day_second do select 1;
SHOW CREATE EVENT root20;
set names cp1251;
create event ðóóò21 on schedule every '50:23:59:95' day_second COMMENT 'òîâà å 1251 êîìåíòàð' do select 1;
SHOW CREATE EVENT ðóóò21;
insert into mysql.event (db, name, body, definer, interval_value, interval_field) values (database(), "root22", "select 1", user(), 100, "SECOND_MICROSECOND");
--error 1535
show create event root22;
--error 1535
SHOW EVENTS;
drop event root22;
drop event root6;
drop event root7;
drop event root8;
drop event root8_1;
drop event root9;
drop event root10;
drop event root11;
drop event root12;
drop event root13;
drop event root13_1;
drop event root14;
drop event root15;
drop event root16;
drop event root17;
drop event root17_1;
drop event root18;
drop event root19;
drop event root20;
drop event ðóóò21;
set names latin1;
#
# SHOW CREATE EVENT test end
#
#
# mysql.event intact checking start
#
# There should be at least 1 second between the ALTERs or we can't catch the change of create_time!!
#
CREATE EVENT intact_check ON SCHEDULE EVERY 10 HOUR DO SELECT "nothing";
--replace_column 8 # 9 #
SHOW EVENTS;
ALTER TABLE mysql.event ADD dummy INT FIRST;
--error 1525
SHOW EVENTS;
ALTER TABLE mysql.event DROP dummy, ADD dummy2 VARCHAR(64) FIRST;
--error 1525
SHOW EVENTS;
ALTER TABLE mysql.event DROP dummy2;
--replace_column 8 # 9 #
SHOW EVENTS;
CREATE TABLE event_like LIKE mysql.event;
INSERT INTO event_like SELECT * FROM mysql.event;
#sleep a bit or we won't catch the change of time
--sleep 1
ALTER TABLE mysql.event MODIFY db char(20) character set utf8 collate utf8_bin default '';
#wait a bit or we won't see the difference because of seconds resolution
--sleep 1
SHOW CREATE TABLE mysql.event;
--error 1526
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
--sleep 1
ALTER TABLE mysql.event MODIFY db char(64) character set utf8 collate utf8_bin default '';
--sleep 1
--echo "This should work"
--replace_column 8 # 9 #
SHOW EVENTS;
--sleep 1
ALTER TABLE mysql.event MODIFY db char(64) character set cp1251 default '';
--error 1526
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
--sleep 1
ALTER TABLE mysql.event MODIFY db varchar(64) character set utf8 collate utf8_bin default '';
--error 1526
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
--sleep 1
ALTER TABLE mysql.event DROP comment, DROP starts;
--sleep 1
--error 1525
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
DROP TABLE mysql.event;
CREATE TABLE mysql.event like event_like;
INSERT INTO mysql.event SELECT * FROM event_like;
DROP TABLE event_like;
--replace_column 8 # 9 #
SHOW EVENTS;
DROP EVENT intact_check;
#
# mysql.event intact checking end
#
#
#INFORMATION_SCHEMA.EVENTS test begin
#
......
sql/event.cc
View file @ 8d4f74be
......@@ -51,8 +51,6 @@
- Make event_timed::get_show_create_event() work
- Add function documentation whenever needed.
- Add logging to file
- Move comparison code to class event_timed
......@@ -66,8 +64,144 @@ Warning:
QUEUE EVEX_EQ_NAME;
MEM_ROOT evex_mem_root;
time_t mysql_event_last_create_time= 0L;
static TABLE_FIELD_W_TYPE event_table_fields[EVEX_FIELD_COUNT] = {
{
{(char *) STRING_WITH_LEN("db")},
{(char *) STRING_WITH_LEN("char(64)")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("name")},
{(char *) STRING_WITH_LEN("char(64)")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("body")},
{(char *) STRING_WITH_LEN("longblob")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("definer")},
{(char *) STRING_WITH_LEN("char(77)")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("execute_at")},
{(char *) STRING_WITH_LEN("datetime")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("interval_value")},
{(char *) STRING_WITH_LEN("int(11)")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("interval_field")},
{(char *) STRING_WITH_LEN("enum('YEAR','QUARTER','MONTH','DAY',"
"'HOUR','MINUTE','WEEK','SECOND','MICROSECOND','YEAR_MONTH','DAY_HOUR',"
"'DAY_MINUTE','DAY_SECOND','HOUR_MINUTE','HOUR_SECOND','MINUTE_SECOND',"
"'DAY_MICROSECOND','HOUR_MICROSECOND','MINUTE_MICROSECOND',"
"'SECOND_MICROSECOND')")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("created")},
{(char *) STRING_WITH_LEN("timestamp")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("modified")},
{(char *) STRING_WITH_LEN("timestamp")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("last_executed")},
{(char *) STRING_WITH_LEN("datetime")},
},
{
{(char *) STRING_WITH_LEN("starts")},
{(char *) STRING_WITH_LEN("datetime")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("ends")},
{(char *) STRING_WITH_LEN("datetime")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("status")},
{(char *) STRING_WITH_LEN("enum('ENABLED','DISABLED')")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("on_completion")},
{(char *) STRING_WITH_LEN("enum('DROP','PRESERVE')")},
{NULL, 0}
},
/*
{
{(char *) STRING_WITH_LEN("sql_mode")},
{(char *) STRING_WITH_LEN("set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES',"
"'IGNORE_SPACE','NOT_USED','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION',"
"'NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB',"
"'NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40',"
"'ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES',"
"'STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES',"
"'ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER',"
"'HIGH_NOT_PRECEDENCE')")},
{NULL, 0}
},
*/
{
{(char *) STRING_WITH_LEN("comment")},
{(char *) STRING_WITH_LEN("char(64)")},
{(char *) STRING_WITH_LEN("utf8")}
}
};
LEX_STRING interval_type_to_name[] = {
{(char *) STRING_WITH_LEN("YEAR")},
{(char *) STRING_WITH_LEN("QUARTER")},
{(char *) STRING_WITH_LEN("MONTH")},
{(char *) STRING_WITH_LEN("DAY")},
{(char *) STRING_WITH_LEN("HOUR")},
{(char *) STRING_WITH_LEN("MINUTE")},
{(char *) STRING_WITH_LEN("WEEK")},
{(char *) STRING_WITH_LEN("SECOND")},
{(char *) STRING_WITH_LEN("MICROSECOND")},
{(char *) STRING_WITH_LEN("YEAR_MONTH")},
{(char *) STRING_WITH_LEN("DAY_HOUR")},
{(char *) STRING_WITH_LEN("DAY_MINUTE")},
{(char *) STRING_WITH_LEN("DAY_SECOND")},
{(char *) STRING_WITH_LEN("HOUR_MINUTE")},
{(char *) STRING_WITH_LEN("HOUR_SECOND")},
{(char *) STRING_WITH_LEN("MINUTE_SECOND")},
{(char *) STRING_WITH_LEN("DAY_MICROSECOND")},
{(char *) STRING_WITH_LEN("HOUR_MICROSECOND")},
{(char *) STRING_WITH_LEN("MINUTE_MICROSECOND")},
{(char *) STRING_WITH_LEN("SECOND_MICROSECOND")}
};
/*
Inits the scheduler queue - prioritized queue from mysys/queue.c
Synopsis
evex_queue_init()
queue - pointer the the memory to be initialized as queue. has to be
allocated from the caller
Notes
During initialization the queue is sized for 30 events, and when is full
will auto extent with 30.
*/
void
evex_queue_init(EVEX_QUEUE_TYPE *queue)
{
......@@ -77,6 +211,24 @@ evex_queue_init(EVEX_QUEUE_TYPE *queue)
}
/*
Compares 2 LEX strings regarding case.
Synopsis
my_time_compare()
s - first LEX_STRING
t - second LEX_STRING
cs - charset
RETURNS:
-1 - s < t
0 - s == t
1 - s > t
Notes
TIME.second_part is not considered during comparison
*/
int sortcmp_lex_string(LEX_STRING s, LEX_STRING t, CHARSET_INFO *cs)
{
......@@ -85,6 +237,24 @@ int sortcmp_lex_string(LEX_STRING s, LEX_STRING t, CHARSET_INFO *cs)
}
/*
Compares 2 TIME structures
Synopsis
my_time_compare()
a - first TIME
b - second time
RETURNS:
-1 - a < b
0 - a == b
1 - a > b
Notes
TIME.second_part is not considered during comparison
*/
int
my_time_compare(TIME *a, TIME *b)
{
......@@ -106,6 +276,24 @@ my_time_compare(TIME *a, TIME *b)
}
/*
Compares the execute_at members of 2 event_timed instances
Synopsis
event_timed_compare()
a - first event_timed object
b - second event_timed object
RETURNS:
-1 - a->execute_at < b->execute_at
0 - a->execute_at == b->execute_at
1 - a->execute_at > b->execute_at
Notes
execute_at.second_part is not considered during comparison
*/
int
event_timed_compare(event_timed *a, event_timed *b)
{
......@@ -114,7 +302,24 @@ event_timed_compare(event_timed *a, event_timed *b)
/*
Callback for the prio queue
Compares the execute_at members of 2 event_timed instances.
Used as callback for the prioritized queue when shifting
elements inside.
Synopsis
event_timed_compare()
vptr - not used (set it to NULL)
a - first event_timed object
b - second event_timed object
RETURNS:
-1 - a->execute_at < b->execute_at
0 - a->execute_at == b->execute_at
1 - a->execute_at > b->execute_at
Notes
execute_at.second_part is not considered during comparison
*/
int
......@@ -124,6 +329,145 @@ event_timed_compare_q(void *vptr, byte* a, byte *b)
}
/*
Reconstructs interval expression from interval type and expression
value that is in form of a value of the smalles entity:
For
YEAR_MONTH - expression is in months
DAY_MINUTE - expression is in minutes
Synopsis
event_reconstruct_interval_expression()
buf - preallocated String buffer to add the value to
interval - the interval type (for instance YEAR_MONTH)
expression - the value in the lowest entity
RETURNS
0 - OK
1 - Error
*/
int
event_reconstruct_interval_expression(String *buf,
interval_type interval,
longlong expression)
{
ulonglong expr= expression;
char tmp_buff[128], *end;
bool close_quote= TRUE;
int multipl= 0;
char separator=':';
switch (interval) {
case INTERVAL_YEAR_MONTH:
multipl= 12;
separator= '-';
goto common_1_lev_code;
case INTERVAL_DAY_HOUR:
multipl= 24;
separator= ' ';
goto common_1_lev_code;
case INTERVAL_HOUR_MINUTE:
case INTERVAL_MINUTE_SECOND:
multipl= 60;
common_1_lev_code:
buf->append('\'');
end= longlong10_to_str(expression/multipl, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));
expr= expr - (expr/multipl)*multipl;
break;
case INTERVAL_DAY_MINUTE:
{
int tmp_expr= expr;
tmp_expr/=(24*60);
buf->append('\'');
end= longlong10_to_str(tmp_expr, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));// days
buf->append(' ');
tmp_expr= expr - tmp_expr*(24*60);//minutes left
end= longlong10_to_str(tmp_expr/60, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));// hours
expr= tmp_expr - (tmp_expr/60)*60;
/* the code after the switch will finish */
}
break;
case INTERVAL_HOUR_SECOND:
{
int tmp_expr= expr;
buf->append('\'');
end= longlong10_to_str(tmp_expr/3600, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));// hours
buf->append(':');
tmp_expr= tmp_expr - (tmp_expr/3600)*3600;
end= longlong10_to_str(tmp_expr/60, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));// minutes
expr= tmp_expr - (tmp_expr/60)*60;
/* the code after the switch will finish */
}
break;
case INTERVAL_DAY_SECOND:
{
int tmp_expr= expr;
tmp_expr/=(24*3600);
buf->append('\'');
end= longlong10_to_str(tmp_expr, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));// days
buf->append(' ');
tmp_expr= expr - tmp_expr*(24*3600);//seconds left
end= longlong10_to_str(tmp_expr/3600, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));// hours
buf->append(':');
tmp_expr= tmp_expr - (tmp_expr/3600)*3600;
end= longlong10_to_str(tmp_expr/60, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));// minutes
expr= tmp_expr - (tmp_expr/60)*60;
/* the code after the switch will finish */
}
break;
case INTERVAL_DAY_MICROSECOND:
case INTERVAL_HOUR_MICROSECOND:
case INTERVAL_MINUTE_MICROSECOND:
case INTERVAL_SECOND_MICROSECOND:
my_error(ER_NOT_SUPPORTED_YET, MYF(0));
return 1;
break;
case INTERVAL_QUARTER:
expr/= 3;
close_quote= FALSE;
break;
case INTERVAL_WEEK:
expr/= 7;
default:
close_quote= FALSE;
break;
}
if (close_quote)
buf->append(separator);
end= longlong10_to_str(expr, tmp_buff, 10);
buf->append(tmp_buff, (uint) (end- tmp_buff));
if (close_quote)
buf->append('\'');
buf->append(' ');
LEX_STRING *ival= &interval_type_to_name[interval];
buf->append(ival->str, ival->length);
return 0;
}
/*
Open mysql.event table for read
......@@ -132,6 +476,7 @@ event_timed_compare_q(void *vptr, byte* a, byte *b)
thd Thread context
lock_type How to lock the table
table The table pointer
RETURN
1 Cannot lock table
2 The table is corrupted - different number of fields
......@@ -153,9 +498,10 @@ evex_open_event_table(THD *thd, enum thr_lock_type lock_type, TABLE **table)
if (simple_open_n_lock_tables(thd, &tables))
DBUG_RETURN(1);
if (tables.table->s->fields != EVEX_FIELD_COUNT)
if (table_check_intact(tables.table, EVEX_FIELD_COUNT, event_table_fields,
&mysql_event_last_create_time,
ER_EVENT_CANNOT_LOAD_FROM_TABLE))
{
my_error(ER_EVENT_COL_COUNT_DOESNT_MATCH, MYF(0), "mysql", "event");
close_thread_tables(thd);
DBUG_RETURN(2);
}
......@@ -219,7 +565,6 @@ evex_db_find_event_aux(THD *thd, const LEX_STRING dbname,
}
/*
Puts some data common to CREATE and ALTER EVENT into a row.
......@@ -245,15 +590,9 @@ evex_fill_row(THD *thd, TABLE *table, event_timed *et, my_bool is_update)
DBUG_ENTER("evex_fill_row");
if (table->s->fields != EVEX_FIELD_COUNT)
{
my_error(ER_EVENT_COL_COUNT_DOESNT_MATCH, MYF(0), "mysql", "event");
DBUG_RETURN(EVEX_GET_FIELD_FAILED);
}
DBUG_PRINT("info", ("dbname.len=[%s]",et->dbname.str));
DBUG_PRINT("info", ("name.len=[%s]",et->name.str));
DBUG_PRINT("info", ("body=[%s]",et->body.str));
DBUG_PRINT("info", ("dbname=[%s]", et->dbname.str));
DBUG_PRINT("info", ("name =[%s]", et->name.str));
DBUG_PRINT("info", ("body =[%s]", et->body.str));
if (table->field[field_num= EVEX_FIELD_DB]->
store(et->dbname.str, et->dbname.length, system_charset_info))
......@@ -584,16 +923,19 @@ err:
*/
static int
db_find_event(THD *thd, sp_name *name, LEX_STRING definer, event_timed **ett,
TABLE *tbl)
db_find_event(THD *thd, sp_name *name, LEX_STRING *definer, event_timed **ett,
TABLE *tbl, MEM_ROOT *root)
{
TABLE *table;
int ret;
char *ptr;
event_timed *et;
event_timed *et=NULL;
DBUG_ENTER("db_find_event");
DBUG_PRINT("enter", ("name: %*s", name->m_name.length, name->m_name.str));
if (!root)
root= &evex_mem_root;
if (tbl)
table= tbl;
else if (evex_open_event_table(thd, TL_READ, &table))
......@@ -603,7 +945,7 @@ db_find_event(THD *thd, sp_name *name, LEX_STRING definer, event_timed **ett,
goto done;
}
if ((ret= evex_db_find_event_aux(thd, name->m_db, name->m_name, definer,
if ((ret= evex_db_find_event_aux(thd, name->m_db, name->m_name, *definer,
table)))
{
my_error(ER_EVENT_DOES_NOT_EXIST, MYF(0), name->m_name.str);
......@@ -617,7 +959,7 @@ db_find_event(THD *thd, sp_name *name, LEX_STRING definer, event_timed **ett,
2)::load_from_row() is silent on error therefore we emit error msg here
*/
if ((ret= et->load_from_row(&evex_mem_root, table)))
if ((ret= et->load_from_row(root, table)))
{
my_error(ER_EVENT_CANNOT_LOAD_FROM_TABLE, MYF(0));
goto done;
......@@ -671,10 +1013,11 @@ evex_load_and_compile_event(THD * thd, sp_name *spn, LEX_STRING definer,
thd->reset_n_backup_open_tables_state(&backup);
// no need to use my_error() here because db_find_event() has done it
if ((ret= db_find_event(thd, spn, definer, &ett, NULL)))
ret= db_find_event(thd, spn, &definer, &ett, NULL, NULL);
thd->restore_backup_open_tables_state(&backup);
if (ret)
goto done;
thd->restore_backup_open_tables_state(&backup);
/*
allocate on evex_mem_root. if you call without evex_mem_root
then sphead will not be cleared!
......@@ -704,10 +1047,31 @@ done:
}
/*
Removes from queue in memory the event which is identified by the tupple
(db, name).
SYNOPSIS
evex_remove_from_cache()
db - db name
name - event name
use_lock - whether to lock the mutex LOCK_event_arrays or not in case it
has been already locked outside
is_drop - if an event is currently being executed then we can also delete
the event_timed instance, so we alarm the event that it should
drop itself if this parameter is set to TRUE. It's false on
ALTER EVENT.
RETURNS
0 - OK (always)
*/
static int
evex_remove_from_cache(LEX_STRING *db, LEX_STRING *name, bool use_lock,
bool is_drop)
{
//ToDo : Add definer to the tuple (db, name) to become triple
uint i;
DBUG_ENTER("evex_remove_from_cache");
......@@ -755,8 +1119,6 @@ done:
}
/*
The function exported to the world for creating of events.
......@@ -814,8 +1176,8 @@ done:
NOTES
et contains data about dbname and event name.
name is the new name of the event, if not null this means
that RENAME TO was specified in the query.
new_name is the new name of the event, if not null (this means
that RENAME TO was specified in the query)
*/
int
......@@ -923,3 +1285,75 @@ done:
DBUG_RETURN(ret);
}
/*
SHOW CREATE EVENT
SYNOPSIS
evex_show_create_event()
thd THD
spn the name of the event (db, name)
definer the definer of the event
RETURNS
0 - OK
1 - Error during writing to the wire
*/
int
evex_show_create_event(THD *thd, sp_name *spn, LEX_STRING definer)
{
int ret;
event_timed *et= NULL;
Open_tables_state backup;
DBUG_ENTER("evex_update_event");
DBUG_PRINT("enter", ("name: %*s", spn->m_name.length, spn->m_name.str));
thd->reset_n_backup_open_tables_state(&backup);
ret= db_find_event(thd, spn, &definer, &et, NULL, thd->mem_root);
thd->restore_backup_open_tables_state(&backup);
if (!ret && et)
{
Protocol *protocol= thd->protocol;
char show_str_buf[768];
String show_str(show_str_buf, sizeof(show_str_buf), system_charset_info);
List<Item> field_list;
const char *sql_mode_str;
ulong sql_mode_len=0;
show_str.length(0);
show_str.set_charset(system_charset_info);
if (et->get_create_event(thd, &show_str))
DBUG_RETURN(1);
field_list.push_back(new Item_empty_string("Event", NAME_LEN));
sql_mode_str=
sys_var_thd_sql_mode::symbolic_mode_representation(thd, et->sql_mode,
&sql_mode_len);
field_list.push_back(new Item_empty_string("sql_mode", sql_mode_len));
field_list.push_back(new Item_empty_string("Create Event",
show_str.length()));
if (protocol->send_fields(&field_list, Protocol::SEND_NUM_ROWS |
Protocol::SEND_EOF))
DBUG_RETURN(1);
protocol->prepare_for_resend();
protocol->store(et->name.str, et->name.length, system_charset_info);
protocol->store((char*) sql_mode_str, sql_mode_len, system_charset_info);
protocol->store(show_str.c_ptr(), show_str.length(), system_charset_info);
ret= protocol->write();
send_eof(thd);
}
DBUG_RETURN(ret);
}
sql/event.h
View file @ 8d4f74be
......@@ -108,6 +108,7 @@ public:
enum enum_event_on_completion on_completion;
enum enum_event_status status;
sp_head *sphead;
ulong sql_mode;
const uchar *body_begin;
......@@ -118,8 +119,9 @@ public:
event_timed():running(0), status_changed(false), last_executed_changed(false),
expression(0), created(0), modified(0),
on_completion(MYSQL_EVENT_ON_COMPLETION_DROP),
status(MYSQL_EVENT_ENABLED), sphead(0), dropped(false),
free_sphead_on_delete(true), flags(0)
status(MYSQL_EVENT_ENABLED), sphead(0), sql_mode(0),
body_begin(0), dropped(false), free_sphead_on_delete(true),
flags(0)
{
pthread_mutex_init(&this->LOCK_running, MY_MUTEX_INIT_FAST);
......@@ -176,8 +178,8 @@ public:
bool
update_fields(THD *thd);
char *
get_show_create_event(THD *thd, uint32 *length);
int
get_create_event(THD *thd, String *buf);
int
execute(THD *thd, MEM_ROOT *mem_root= NULL);
......@@ -220,8 +222,16 @@ evex_drop_event(THD *thd, event_timed *et, bool drop_if_exists,
int
evex_open_event_table(THD *thd, enum thr_lock_type lock_type, TABLE **table);
int
evex_show_create_event(THD *thd, sp_name *spn, LEX_STRING definer);
int sortcmp_lex_string(LEX_STRING s, LEX_STRING t, CHARSET_INFO *cs);
int
event_reconstruct_interval_expression(String *buf,
interval_type interval,
longlong expression);
int
init_events();
......
sql/event_executor.cc
View file @ 8d4f74be
......@@ -32,9 +32,9 @@
extern ulong thread_created;
extern const char *my_localhost;
pthread_mutex_t LOCK_event_arrays,
LOCK_workers_count,
LOCK_evex_running;
pthread_mutex_t LOCK_event_arrays, // mutex for when working with the queue
LOCK_workers_count, // mutex for when inc/dec uint workers_count
LOCK_evex_running; // mutes for managing bool evex_is_running
bool evex_is_running= false;
......@@ -61,6 +61,19 @@ event_executor_worker(void *arg);
pthread_handler_t
event_executor_main(void *arg);
/*
Returns the seconds difference of 2 TIME structs
SYNOPSIS
evex_time_diff()
a - TIME struct 1
b - TIME struct 2
Returns:
the seconds difference
*/
static int
evex_time_diff(TIME *a, TIME *b)
{
......@@ -68,6 +81,19 @@ evex_time_diff(TIME *a, TIME *b)
}
/*
Inits the mutexes used by the scheduler module
SYNOPSIS
evex_init_mutexes()
NOTES
The mutexes are :
LOCK_event_arrays
LOCK_workers_count
LOCK_evex_running
*/
static void
evex_init_mutexes()
{
......@@ -83,6 +109,75 @@ evex_init_mutexes()
}
/*
Opens mysql.db and mysql.user and checks whether
1. mysql.db has column Event_priv at column 20 (0 based);
2. mysql.user has column Event_priv at column 29 (0 based);
Synopsis
evex_check_system_tables()
*/
void
evex_check_system_tables()
{
THD *thd= current_thd;
TABLE_LIST tables;
bool not_used;
Open_tables_state backup;
// thd is 0x0 during boot of the server. Later it's !=0x0
if (!thd)
return;
thd->reset_n_backup_open_tables_state(&backup);
bzero((char*) &tables, sizeof(tables));
tables.db= (char*) "mysql";
tables.table_name= tables.alias= (char*) "db";
tables.lock_type= TL_READ;
if (simple_open_n_lock_tables(thd, &tables))
sql_print_error("Cannot open mysql.db");
else
{
table_check_intact(tables.table, MYSQL_DB_FIELD_COUNT, mysql_db_table_fields,
&mysql_db_table_last_check,ER_EVENT_CANNOT_LOAD_FROM_TABLE);
close_thread_tables(thd);
}
bzero((char*) &tables, sizeof(tables));
tables.db= (char*) "mysql";
tables.table_name= tables.alias= (char*) "user";
tables.lock_type= TL_READ;
if (simple_open_n_lock_tables(thd, &tables))
sql_print_error("Cannot open mysql.db");
else
{
if (tables.table->s->fields < 29 ||
strncmp(tables.table->field[29]->field_name,
STRING_WITH_LEN("Event_priv")))
sql_print_error("mysql.user has no `Event_priv` column at position 29");
close_thread_tables(thd);
}
thd->restore_backup_open_tables_state(&backup);
}
/*
Inits the scheduler. Called on server start and every time the scheduler
is started with switching the event_scheduler global variable to TRUE
SYNOPSIS
init_events()
NOTES
Inits the mutexes used by the scheduler. Done at server start.
*/
int
init_events()
{
......@@ -92,6 +187,8 @@ init_events()
DBUG_PRINT("info",("Starting events main thread"));
evex_check_system_tables();
evex_init_mutexes();
VOID(pthread_mutex_lock(&LOCK_evex_running));
......@@ -113,6 +210,16 @@ init_events()
}
/*
Cleans up scheduler memory. Called on server shutdown.
SYNOPSIS
shutdown_events()
NOTES
Destroys the mutexes.
*/
void
shutdown_events()
{
......@@ -129,6 +236,22 @@ shutdown_events()
}
/*
Inits an scheduler thread handler, both the main and a worker
SYNOPSIS
init_event_thread()
thd - the THD of the thread. Has to be allocated by the caller.
NOTES
1. The host of the thead is my_localhost
2. thd->net is initted with NULL - no communication.
Returns
0 - OK
-1 - Error
*/
static int
init_event_thread(THD* thd)
{
......@@ -165,6 +288,22 @@ init_event_thread(THD* thd)
DBUG_RETURN(0);
}
/*
The main scheduler thread. Inits the priority queue on start and
destroys it on thread shutdown. Forks child threads for every event
execution. Sleeps between thread forking and does not do a busy wait.
SYNOPSIS
event_executor_main()
arg - unused
NOTES
1. The host of the thead is my_localhost
2. thd->net is initted with NULL - no communication.
*/
pthread_handler_t
event_executor_main(void *arg)
{
......@@ -436,6 +575,15 @@ err_no_thd:
}
/*
Function that executes an event in a child thread. Setups the
environment for the event execution and cleans after that.
SYNOPSIS
event_executor_worker()
arg - the event_timed object to be processed
*/
pthread_handler_t
event_executor_worker(void *event_void)
{
......@@ -561,6 +709,24 @@ err_no_thd:
}
/*
Loads all ENABLED events from mysql.event into the prioritized
queue. Called during scheduler main thread initialization. Compiles
the events. Creates event_timed instances for every ENABLED event
from mysql.event.
SYNOPSIS
evex_load_events_from_db()
thd - Thread context. Used for memory allocation in some cases.
RETURNS
0 - OK
-1 - Error
NOTES
Reports the error to the console
*/
static int
evex_load_events_from_db(THD *thd)
{
......@@ -647,7 +813,22 @@ end:
}
bool sys_var_event_executor::update(THD *thd, set_var *var)
/*
The update method of the global variable event_scheduler.
If event_scheduler is switched from 0 to 1 then the scheduler main
thread is started.
SYNOPSIS
event_executor_worker()
thd - Thread context (unused)
car - the new value
Returns
0 - OK (always)
*/
bool
sys_var_event_executor::update(THD *thd, set_var *var)
{
// here start the thread if not running.
DBUG_ENTER("sys_var_event_executor::update");
......
sql/event_priv.h
View file @ 8d4f74be
......@@ -40,7 +40,6 @@ evex_db_find_event_aux(THD *thd, const LEX_STRING dbname,
int
event_timed_compare_q(void *vptr, byte* a, byte *b);
#define EXEC_QUEUE_QUEUE_NAME executing_queue
#define EXEC_QUEUE_DARR_NAME evex_executing_queue
......
sql/event_timed.cc
View file @ 8d4f74be
......@@ -116,7 +116,10 @@ event_timed::init_body(THD *thd)
while (body.length && body_begin[body.length-1] == '\0')
body.length--;
body.str= strmake_root(root, (char *)body_begin, body.length);
//the first is always space which I cannot skip in the parser
DBUG_ASSERT(*body_begin == ' ');
body.length--;
body.str= strmake_root(root, (char *)body_begin + 1, body.length);
DBUG_VOID_RETURN;
}
......@@ -847,6 +850,15 @@ err:
}
/*
Set the internal last_executed TIME struct to now. NOW is the
time according to thd->query_start(), so the THD's clock.
Synopsis
event_timed::drop()
thd - thread context
*/
void
event_timed::mark_last_executed(THD *thd)
{
......@@ -864,7 +876,13 @@ event_timed::mark_last_executed(THD *thd)
/*
Returns :
Drops the event
Synopsis
event_timed::drop()
thd - thread context
RETURNS :
0 - OK
-1 - Cannot open mysql.event
-2 - Cannot find the event in mysql.event (already deleted?)
......@@ -894,6 +912,22 @@ event_timed::drop(THD *thd)
}
/*
Saves status and last_executed_at to the disk if changed.
Synopsis
event_timed::drop()
thd - thread context
Returns :
0 - OK
SP_OPEN_TABLE_FAILED - Error while opening mysql.event for writing
EVEX_WRITE_ROW_FAILED - On error to write to disk
others - return code from SE in case deletion of the event row
failed.
*/
bool
event_timed::update_fields(THD *thd)
{
......@@ -951,40 +985,75 @@ done:
}
char *
event_timed::get_show_create_event(THD *thd, uint32 *length)
/*
Get SHOW CREATE EVENT as string
thd - Thread
buf - String*, should be already allocated. CREATE EVENT goes inside.
Returns:
0 - OK
1 - Error (for now if mysql.event has been tampered and MICROSECONDS
interval or derivative has been put there.
*/
int
event_timed::get_create_event(THD *thd, String *buf)
{
char *dst, *ret;
uint len, tmp_len;
DBUG_ENTER("get_show_create_event");
int multipl= 0;
char tmp_buff[128];
String expr_buf(tmp_buff, sizeof(tmp_buff), system_charset_info);
expr_buf.length(0);
DBUG_ENTER("get_create_event");
DBUG_PRINT("ret_info",("body_len=[%d]body=[%s]", body.length, body.str));
len = strlen("CREATE EVENT `") + dbname.length + strlen("`.`") + name.length +
strlen("` ON SCHEDULE EVERY 5 MINUTE DO ") + body.length;// + strlen(";");
ret= dst= (char*) alloc_root(thd->mem_root, len + 1);
memcpy(dst, "CREATE EVENT `", tmp_len= strlen("CREATE EVENT `"));
dst+= tmp_len;
memcpy(dst, dbname.str, tmp_len=dbname.length);
dst+= tmp_len;
memcpy(dst, "`.`", tmp_len= strlen("`.`"));
dst+= tmp_len;
memcpy(dst, name.str, tmp_len= name.length);
dst+= tmp_len;
memcpy(dst, "` ON SCHEDULE EVERY 5 MINUTE DO ",
tmp_len= strlen("` ON SCHEDULE EVERY 5 MINUTE DO "));
dst+= tmp_len;
memcpy(dst, body.str, tmp_len= body.length);
dst+= tmp_len;
// memcpy(dst, ";", 1);
// ++dst;
*dst= '\0';
*length= len;
DBUG_PRINT("ret_info",("len=%d",*length));
DBUG_RETURN(ret);
if (expression &&
event_reconstruct_interval_expression(&expr_buf, interval, expression))
DBUG_RETURN(1);
buf->append(STRING_WITH_LEN("CREATE EVENT "));
append_identifier(thd, buf, dbname.str, dbname.length);
buf->append(STRING_WITH_LEN("."));
append_identifier(thd, buf, name.str, name.length);
buf->append(STRING_WITH_LEN(" ON SCHEDULE "));
if (expression)
{
buf->append(STRING_WITH_LEN("EVERY "));
buf->append(expr_buf);
}
else
{
char dtime_buff[20*2+32];// +32 to make my_snprintf_{8bit|ucs2} happy
buf->append(STRING_WITH_LEN("AT '"));
/*
pass the buffer and the second param tells fills the buffer and returns
the number of chars to copy
*/
buf->append(dtime_buff, my_datetime_to_str(&execute_at, dtime_buff));
buf->append(STRING_WITH_LEN("'"));
}
if (on_completion == MYSQL_EVENT_ON_COMPLETION_DROP)
buf->append(STRING_WITH_LEN(" ON COMPLETION NOT PRESERVE "));
else
buf->append(STRING_WITH_LEN(" ON COMPLETION PRESERVE "));
if (status == MYSQL_EVENT_ENABLED)
buf->append(STRING_WITH_LEN("ENABLE"));
else
buf->append(STRING_WITH_LEN("DISABLE"));
if (comment.length)
{
buf->append(STRING_WITH_LEN(" COMMENT "));
append_unescaped(buf, comment.str, comment.length);
}
buf->append(STRING_WITH_LEN(" DO "));
buf->append(body.str, body.length);
DBUG_RETURN(0);
}
......@@ -1045,13 +1114,21 @@ done:
/*
Compiles an event before it's execution. Compiles the anonymous
sp_head object held by the event
Synopsis
event_timed::compile()
thd - thread context, used for memory allocation mostly
mem_root - if != NULL then this memory root is used for allocs
instead of thd->mem_root
Returns
0 - Success
EVEX_COMPILE_ERROR - Error during compilation
*/
int
event_timed::compile(THD *thd, MEM_ROOT *mem_root)
{
......@@ -1064,9 +1141,13 @@ event_timed::compile(THD *thd, MEM_ROOT *mem_root)
char *old_query;
uint old_query_len;
st_sp_chistics *p;
CHARSET_INFO *old_character_set_client, *old_collation_connection,
char create_buf[2048];
String show_create(create_buf, sizeof(create_buf), system_charset_info);
CHARSET_INFO *old_character_set_client,
*old_collation_connection,
*old_character_set_results;
show_create.length(0);
old_character_set_client= thd->variables.character_set_client;
old_character_set_results= thd->variables.character_set_results;
old_collation_connection= thd->variables.collation_connection;
......@@ -1089,7 +1170,11 @@ event_timed::compile(THD *thd, MEM_ROOT *mem_root)
old_query= thd->query;
old_db= thd->db;
thd->db= dbname.str;
thd->query= get_show_create_event(thd, &thd->query_length);
get_create_event(thd, &show_create);
thd->query= show_create.c_ptr();
thd->query_length= show_create.length();
DBUG_PRINT("event_timed::compile", ("query:%s",thd->query));
thd->lex= &lex;
......
sql/share/errmsg.txt
View file @ 8d4f74be
......@@ -5779,10 +5779,10 @@ ER_EVENT_OPEN_TABLE_FAILED
eng "Failed to open mysql.event"
ER_EVENT_NEITHER_M_EXPR_NOR_M_AT
eng "No datetime expression provided"
ER_EVENT_COL_COUNT_DOESNT_MATCH
eng "Column count of %s.%s is wrong. Table probably corrupted"
ER_COL_COUNT_DOESNT_MATCH_CORRUPTED
eng "Column count of mysql.%s is wrong. Table probably corrupted. Expected %d, found %d."
ER_EVENT_CANNOT_LOAD_FROM_TABLE
eng "Cannot load from mysql.event. Table probably corrupted"
eng "Cannot load from mysql.%s. Table probably corrupted. See error log."
ER_EVENT_CANNOT_DELETE
eng "Failed to delete the event from mysql.event"
ER_EVENT_COMPILE_ERROR
......@@ -5798,3 +5798,5 @@ ER_CANT_WRITE_LOCK_LOG_TABLE
eng "You can't write-lock a log table. Only read access is possible."
ER_CANT_READ_LOCK_LOG_TABLE
eng "You can't use usual read lock with log tables. Try READ LOCAL instead."
ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE
eng "Column count of mysql.%s is wrong. Expected %d, found %d. Created with MySQL %d, now running %d. Please use scripts/mysql_fix_privilege_tables"
sql/sql_acl.cc
View file @ 8d4f74be
......@@ -36,6 +36,122 @@
#define FIRST_NON_YN_FIELD 26
time_t mysql_db_table_last_check= 0L;
TABLE_FIELD_W_TYPE mysql_db_table_fields[MYSQL_DB_FIELD_COUNT] = {
{
{(char *) STRING_WITH_LEN("Host")},
{(char *) STRING_WITH_LEN("char(60)")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("Db")},
{(char *) STRING_WITH_LEN("char(64)")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("User")},
{(char *) STRING_WITH_LEN("char(16)")},
{NULL, 0}
},
{
{(char *) STRING_WITH_LEN("Select_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Insert_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Update_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Delete_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Create_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Drop_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Grant_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("References_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Index_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Alter_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Create_tmp_table_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Lock_tables_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Create_view_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Show_view_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Create_routine_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Alter_routine_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Execute_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Event_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
},
{
{(char *) STRING_WITH_LEN("Trigger_priv")},
{(char *) STRING_WITH_LEN("enum('N','Y')")},
{(char *) STRING_WITH_LEN("utf8")}
}
};
class acl_entry :public hash_filo_element
{
public:
......@@ -435,14 +551,14 @@ static my_bool acl_load(THD *thd, TABLE_LIST *tables)
while (!(read_record_info.read_record(&read_record_info)))
{
ACL_DB db;
update_hostname(&db.host,get_field(&mem, table->field[0]));
db.db=get_field(&mem, table->field[1]);
update_hostname(&db.host,get_field(&mem, table->field[MYSQL_DB_FIELD_HOST]));
db.db=get_field(&mem, table->field[MYSQL_DB_FIELD_DB]);
if (!db.db)
{
sql_print_warning("Found an entry in the 'db' table with empty database name; Skipped");
continue;
}
db.user=get_field(&mem, table->field[2]);
db.user=get_field(&mem, table->field[MYSQL_DB_FIELD_USER]);
if (check_no_resolve && hostname_requires_resolving(db.host.hostname))
{
sql_print_warning("'db' entry '%s %s@%s' "
......
sql/sql_acl.h
View file @ 8d4f74be
......@@ -129,6 +129,36 @@
(((A) & ALTER_PROC_ACL) >> 23) | \
(((A) & GRANT_ACL) >> 8))
enum mysql_db_table_field
{
MYSQL_DB_FIELD_HOST = 0,
MYSQL_DB_FIELD_DB,
MYSQL_DB_FIELD_USER,
MYSQL_DB_FIELD_SELECT_PRIV,
MYSQL_DB_FIELD_INSERT_PRIV,
MYSQL_DB_FIELD_UPDATE_PRIV,
MYSQL_DB_FIELD_DELETE_PRIV,
MYSQL_DB_FIELD_CREATE_PRIV,
MYSQL_DB_FIELD_DROP_PRIV,
MYSQL_DB_FIELD_GRANT_PRIV,
MYSQL_DB_FIELD_REFERENCES_PRIV,
MYSQL_DB_FIELD_INDEX_PRIV,
MYSQL_DB_FIELD_ALTER_PRIV,
MYSQL_DB_FIELD_CREATE_TMP_TABLE_PRIV,
MYSQL_DB_FIELD_LOCK_TABLES_PRIV,
MYSQL_DB_FIELD_CREATE_VIEW_PRIV,
MYSQL_DB_FIELD_SHOW_VIEW_PRIV,
MYSQL_DB_FIELD_CREATE_ROUTINE_PRIV,
MYSQL_DB_FIELD_ALTER_ROUTINE_PRIV,
MYSQL_DB_FIELD_EXECUTE_PRIV,
MYSQL_DB_FIELD_EVENT_PRIV,
MYSQL_DB_FIELD_TRIGGER_PRIV,
MYSQL_DB_FIELD_COUNT
};
extern TABLE_FIELD_W_TYPE mysql_db_table_fields[];
extern time_t mysql_db_table_last_check;
/* Classes */
struct acl_host_and_ip
......
sql/sql_parse.cc
View file @ 8d4f74be
......@@ -3735,6 +3735,14 @@ end_with_restore_list:
}
case SQLCOM_SHOW_CREATE_EVENT:
{
DBUG_ASSERT(lex->spname);
DBUG_ASSERT(lex->et);
if (! lex->spname->m_db.str)
{
my_message(ER_NO_DB_ERROR, ER(ER_NO_DB_ERROR), MYF(0));
res= true;
break;
}
if (check_access(thd, EVENT_ACL, lex->spname->m_db.str, 0, 0, 0,
is_schema_db(lex->spname->m_db.str)))
break;
......@@ -3744,8 +3752,7 @@ end_with_restore_list:
my_error(ER_TOO_LONG_IDENT, MYF(0), lex->spname->m_name.str);
goto error;
}
/* TODO : Implement it */
send_ok(thd, 1);
res= evex_show_create_event(thd, lex->spname, lex->et->definer);
break;
}
case SQLCOM_CREATE_FUNCTION: // UDF function
......
sql/sql_show.cc
View file @ 8d4f74be
......@@ -3772,30 +3772,6 @@ static int get_schema_partitions_record(THD *thd, struct st_table_list *tables,
}
static LEX_STRING interval_type_to_name[] = {
{(char *) STRING_WITH_LEN("INTERVAL_YEAR")},
{(char *) STRING_WITH_LEN("INTERVAL_QUARTER")},
{(char *) STRING_WITH_LEN("INTERVAL_MONTH")},
{(char *) STRING_WITH_LEN("INTERVAL_DAY")},
{(char *) STRING_WITH_LEN("INTERVAL_HOUR")},
{(char *) STRING_WITH_LEN("INTERVAL_MINUTE")},
{(char *) STRING_WITH_LEN("INTERVAL_WEEK")},
{(char *) STRING_WITH_LEN("INTERVAL_SECOND")},
{(char *) STRING_WITH_LEN("INTERVAL_MICROSECOND ")},
{(char *) STRING_WITH_LEN("INTERVAL_YEAR_MONTH")},
{(char *) STRING_WITH_LEN("INTERVAL_DAY_HOUR")},
{(char *) STRING_WITH_LEN("INTERVAL_DAY_MINUTE")},
{(char *) STRING_WITH_LEN("INTERVAL_DAY_SECOND")},
{(char *) STRING_WITH_LEN("INTERVAL_HOUR_MINUTE")},
{(char *) STRING_WITH_LEN("INTERVAL_HOUR_SECOND")},
{(char *) STRING_WITH_LEN("INTERVAL_MINUTE_SECOND")},
{(char *) STRING_WITH_LEN("INTERVAL_DAY_MICROSECOND")},
{(char *) STRING_WITH_LEN("INTERVAL_HOUR_MICROSECOND")},
{(char *) STRING_WITH_LEN("INTERVAL_MINUTE_MICROSECOND")},
{(char *) STRING_WITH_LEN("INTERVAL_SECOND_MICROSECOND")}
};
static interval_type get_real_interval_type(interval_type i_type)
{
switch (i_type) {
......@@ -3869,6 +3845,7 @@ fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
sch_table->field[9]->set_null();
if (et.expression)
{
String show_str;
//type
sch_table->field[5]->store(STRING_WITH_LEN("RECURRING"), scs);
//execute_at
......@@ -3877,9 +3854,11 @@ fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
sch_table->field[7]->set_notnull();
sch_table->field[7]->store((longlong) et.expression);
//interval_type
LEX_STRING *ival=&interval_type_to_name[get_real_interval_type(et.interval)];
if (event_reconstruct_interval_expression(&show_str, et.interval,
et.expression))
DBUG_RETURN(1);
sch_table->field[8]->set_notnull();
sch_table->field[8]->store(ival->str, ival->length, scs);
sch_table->field[8]->store(show_str.c_ptr(), show_str.length(), scs);
//starts & ends
sch_table->field[10]->set_notnull();
sch_table->field[10]->store_time(&et.starts, MYSQL_TIMESTAMP_DATETIME);
......
sql/sql_yacc.yy
View file @ 8d4f74be
......@@ -8402,6 +8402,10 @@ show_param:
{
Lex->sql_command = SQLCOM_SHOW_CREATE_EVENT;
Lex->spname= $3;
Lex->et= new event_timed();
if (!Lex->et)
YYABORT;
Lex->et->init_definer(YYTHD);
}
;
......
sql/table.cc
View file @ 8d4f74be
......@@ -343,9 +343,7 @@ int open_table_def(THD *thd, TABLE_SHARE *share, uint db_flags)
allow to lock such tables for writing with any other tables (even with
other system tables) and some privilege tables need this.
*/
if (!my_strcasecmp(system_charset_info, share->table_name.str, "proc")
|| !my_strcasecmp(system_charset_info, share->table_name.str,
"event"))
if (!my_strcasecmp(system_charset_info, share->table_name.str, "proc"))
share->system_table= 1;
else
{
......@@ -2296,6 +2294,144 @@ bool check_column_name(const char *name)
return last_char_is_space || (uint) (name - start) > NAME_LEN;
}
/*
Checks whether a table is intact. Should be done *just* after the table has
been opened.
Synopsis
table_check_intact()
table - the table to check
table_f_count - expected number of columns in the table
table_def - expected structure of the table (column name and type)
last_create_time- the table->file->create_time of the table in memory
we have checked last time
error_num - ER_XXXX from the error messages file. When 0 no error
is sent to the client in case types does not match.
If different col number either
ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE or
ER_COL_COUNT_DOESNT_MATCH_CORRUPTED is used
RETURNS
0 - OK
1 - There was an error
*/
my_bool
table_check_intact(TABLE *table, uint table_f_count,
TABLE_FIELD_W_TYPE *table_def, time_t *last_create_time,
int error_num)
{
uint i;
my_bool error= FALSE;
my_bool fields_diff_count;
DBUG_ENTER("table_check_intact");
DBUG_PRINT("info",("table=%s expected_count=%d",table->alias, table_f_count));
DBUG_PRINT("info",("last_create_time=%d", *last_create_time));
if ((fields_diff_count= (table->s->fields != table_f_count)) ||
(*last_create_time != table->file->create_time))
{
DBUG_PRINT("info", ("I am suspecting, checking table"));
if (fields_diff_count)
{
// previous MySQL version
error= TRUE;
if (MYSQL_VERSION_ID > table->s->mysql_version)
my_error(ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE, MYF(0), table->alias,
table_f_count, table->s->fields, table->s->mysql_version,
MYSQL_VERSION_ID);
else if (MYSQL_VERSION_ID == table->s->mysql_version)
my_error(ER_COL_COUNT_DOESNT_MATCH_CORRUPTED,MYF(0), table->alias,
table_f_count, table->s->fields);
else
/*
moving from newer mysql to older one -> let's say not an error but
will check the definition afterwards. If a column was added at the end
then we don't care much since it's not in the middle.
*/
error= FALSE;
}
//definitely something has changed
char buffer[255];
for (i=0 ;i < table_f_count; ++i, ++table_def)
{
Field *field= table->field[i];
String sql_type(buffer, sizeof(buffer), system_charset_info);
sql_type.length(0);
/*
name changes are not fatal, we use sequence numbers => no prob for us
but this can show tampered table or broken table.
*/
if (!fields_diff_count || i < table->s->fields)
{
if (strncmp(field->field_name, table_def->name.str,
table_def->name.length))
{
sql_print_error("(%s) Expected field %s at position %d, found %s",
table->alias, table_def->name.str, i,
field->field_name);
}
/*
IF the type does not match than something is really wrong
Check up to length - 1. Why?
1. datetime -> datetim -> the same
2. int(11) -> int(11 -> the same
3. set('one','two') -> set('one','two'
so for sets if the same prefix is there it's ok if more are
added as part of the set. The same is valid for enum. So a new
table running on a old server will be valid.
*/
field->sql_type(sql_type);
if (strncmp(sql_type.c_ptr(), table_def->type.str,
table_def->type.length - 1))
{
sql_print_error("(%s) Expected field %s at position %d to have type "
"%s, found %s", table->alias, table_def->name.str,
i, table_def->type.str, sql_type.c_ptr());
error= TRUE;
}
else if (table_def->cset.str && !field->has_charset())
{
sql_print_error("(%s) Expected field %s at position %d to have "
"character set '%s' but found no such", table->alias,
table_def->name.str, i, table_def->cset.str);
error= TRUE;
}
else if (table_def->cset.str &&
strcmp(field->charset()->csname, table_def->cset.str))
{
sql_print_error("(%s) Expected field %s at position %d to have "
"character set '%s' but found '%s'", table->alias,
table_def->name.str, i, table_def->cset.str,
field->charset()->csname);
error= TRUE;
}
}
else
{
sql_print_error("(%s) Expected field %s at position %d to have type %s "
" but no field found.", table_def->name.str,
table_def->name.str, i, table_def->type.str);
error= TRUE;
}
}
if (!error)
*last_create_time= table->file->create_time;
else if (!fields_diff_count && error_num)
my_error(error_num,MYF(0), table->alias, table_f_count, table->s->fields);
}
else
{
DBUG_PRINT("info", ("Table seems ok without through checking."));
*last_create_time= table->file->create_time;
}
DBUG_RETURN(error);
}
/*
Create Item_field for each column in the table.
......
sql/table.h
View file @ 8d4f74be
......@@ -864,4 +864,15 @@ typedef struct st_open_table_list{
uint32 in_use,locked;
} OPEN_TABLE_LIST;
typedef struct st_table_field_w_type
{
LEX_STRING name;
LEX_STRING type;
LEX_STRING cset;
} TABLE_FIELD_W_TYPE;
my_bool
table_check_intact(TABLE *table, uint table_f_count,
TABLE_FIELD_W_TYPE *table_def, time_t *last_create_time,
int error_num);
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