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Fix for bug #17394 - Events namespace is wrong

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mysql-test/lib/init_db.sql:
  remove definer from PK
mysql-test/r/events.result:
  update results
mysql-test/r/system_mysql_db.result:
  update results
mysql-test/t/events.test:
  remove I_S.EVENTS test and move it to events_grant.test
scripts/mysql_fix_privilege_tables.sql:
  change table definition
sql/event.cc:
  make events non-user specific (namespace change)
sql/event.h:
  make events non-user specific (namespace change)
sql/event_priv.h:
  make events non-user specific (namespace change)
sql/event_scheduler.cc:
  make events non-user specific (namespace change)
sql/event_timed.cc:
  make events non-user specific (namespace change)
sql/sql_parse.cc:
  make events non-user specific (namespace change)
sql/sql_show.cc:
  SHOW EVENTS is available to everyone who has EVENT on specific schema.
  No additional privileges are needed to see others' events.
  - user A has events in db1 and db2
  - user B has events in db1 and db3
  A will see all his events from db1 and db2 as well as B's events
  from db1 but not from db3.
  B will see her events from db1 and db3. In addition B will see
  only A's events from db1 but not db2.
This commit is contained in:
unknown
2006-05-29 10:39:45 +02:00
parent c4c26017c9
commit bdda011675
12 changed files with 258 additions and 311 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
mysql-test/lib/init_db.sql
View File

@ -631,7 +631,7 @@ CREATE TABLE event (
'HIGH_NOT_PRECEDENCE' 'HIGH_NOT_PRECEDENCE'
) DEFAULT '' NOT NULL, ) DEFAULT '' NOT NULL,
comment char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '', comment char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '',
PRIMARY KEY (definer, db, name) PRIMARY KEY (db, name)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT 'Events'; ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT 'Events';
CREATE DATABASE IF NOT EXISTS cluster; CREATE DATABASE IF NOT EXISTS cluster;

83
mysql-test/r/events.result
View File

@ -254,7 +254,7 @@ event CREATE TABLE `event` (
`on_completion` enum('DROP','PRESERVE') NOT NULL DEFAULT 'DROP', `on_completion` enum('DROP','PRESERVE') NOT NULL DEFAULT 'DROP',
`sql_mode` 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') NOT NULL DEFAULT '', `sql_mode` 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') NOT NULL DEFAULT '',
`comment` char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '', `comment` char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '',
PRIMARY KEY (`definer`,`db`,`name`) PRIMARY KEY (`db`,`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events' ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events'
SELECT event_name FROM INFORMATION_SCHEMA.EVENTS; SELECT event_name FROM INFORMATION_SCHEMA.EVENTS;
ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log. ERROR HY000: Cannot load from mysql.event. Table probably corrupted. See error log.
@ -280,84 +280,6 @@ SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test intact_check root@localhost RECURRING NULL 10 HOUR # # ENABLED events_test intact_check root@localhost RECURRING NULL 10 HOUR # # ENABLED
DROP EVENT intact_check; 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 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 SECOND ENABLED NOT PRESERVE
CREATE DATABASE events_test2;
CREATE USER ev_test@localhost;
GRANT ALL ON events_test.* to ev_test@localhost;
GRANT ALL on events_test2.* to ev_test@localhost;
REVOKE EVENT ON events_test2.* FROM ev_test@localhost;
REVOKE PROCESS on *.* from ev_test@localhost;
select "NEW CONNECTION";
NEW CONNECTION
NEW CONNECTION
SELECT USER(), DATABASE();
USER() DATABASE()
ev_test@localhost events_test2
SHOW GRANTS;
Grants for ev_test@localhost
GRANT USAGE ON *.* TO 'ev_test'@'localhost'
GRANT ALL PRIVILEGES ON `events_test`.* TO 'ev_test'@'localhost'
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, TRIGGER ON `events_test2`.* TO 'ev_test'@'localhost'
"Here comes an error:";
SHOW EVENTS;
ERROR 42000: Access denied for user 'ev_test'@'localhost' to database 'events_test2'
USE events_test;
"Now the list should be empty:";
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
select concat("Let's create some new events from the name of ",user());
concat("Let's create some new events from the name of ",user())
Let's create some new events from the name of ev_test@localhost
create event one_event on schedule every 20 second do select 123;
create event two_event on schedule every 20 second on completion not preserve comment "two event" do select 123;
create event three_event on schedule every 20 second on completion preserve comment "three event" do select 123;
"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 SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED
"This should show us only 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 SECOND # # ENABLED
events_test three_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED
"This should show us only 2 events:";
SHOW 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 SECOND # # ENABLED
events_test two_event ev_test@localhost RECURRING NULL 20 SECOND # # ENABLED
"This should show us no events:";
SHOW EVENTS FROM test LIKE '%';
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
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 SECOND # # ENABLED
"we should see 4 events now:";
SHOW EVENTS;
Db Name Definer Type Execute at Interval value Interval field Starts Ends Status
events_test one_event root@localhost RECURRING NULL 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 SECOND ENABLED NOT PRESERVE
NULL events_test three_event ev_test@localhost select 123 RECURRING NULL 20 SECOND ENABLED PRESERVE three event
NULL events_test two_event ev_test@localhost select 123 RECURRING NULL 20 SECOND ENABLED NOT PRESERVE two event
NULL events_test one_event root@localhost select 123 RECURRING NULL 10 SECOND ENABLED NOT PRESERVE
drop event one_event;
drop event two_event;
drop event three_event;
drop user ev_test@localhost;
drop event one_event;
"Sleep a bit so the server closes the second connection"
create event e_26 on schedule at '2017-01-01 00:00:00' disable do set @a = 5; create event e_26 on schedule at '2017-01-01 00:00:00' disable do set @a = 5;
select db, name, body, definer, convert_tz(execute_at, 'UTC', 'SYSTEM'), on_completion from mysql.event; select db, name, body, definer, convert_tz(execute_at, 'UTC', 'SYSTEM'), on_completion from mysql.event;
db name body definer convert_tz(execute_at, 'UTC', 'SYSTEM') on_completion db name body definer convert_tz(execute_at, 'UTC', 'SYSTEM') on_completion
@ -452,9 +374,6 @@ select 2;
select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space'; select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
event_schema event_name definer event_body event_schema event_name definer event_body
events_test white_space root@localhost select 2 events_test white_space root@localhost select 2
select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
event_schema event_name definer event_body
events_test white_space root@localhost select 2
drop event white_space; drop event white_space;
create event white_space on schedule every 10 hour disable do select 3; create event white_space on schedule every 10 hour disable do select 3;
select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space'; select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';

2
mysql-test/r/system_mysql_db.result
View File

@ -208,7 +208,7 @@ event CREATE TABLE `event` (
`on_completion` enum('DROP','PRESERVE') NOT NULL DEFAULT 'DROP', `on_completion` enum('DROP','PRESERVE') NOT NULL DEFAULT 'DROP',
`sql_mode` 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') NOT NULL DEFAULT '', `sql_mode` 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') NOT NULL DEFAULT '',
`comment` char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '', `comment` char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '',
PRIMARY KEY (`definer`,`db`,`name`) PRIMARY KEY (`db`,`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events' ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='Events'
show create table general_log; show create table general_log;
Table Create Table Table Create Table

83
mysql-test/t/events.test
View File

@ -148,9 +148,9 @@ set names cp1251;
create event <20><><EFBFBD><EFBFBD>21 on schedule every '50:23:59:95' day_second COMMENT '<27><><EFBFBD><EFBFBD> <20> 1251 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>' do select 1; create event <20><><EFBFBD><EFBFBD>21 on schedule every '50:23:59:95' day_second COMMENT '<27><><EFBFBD><EFBFBD> <20> 1251 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>' do select 1;
SHOW CREATE EVENT <20><><EFBFBD><EFBFBD>21; SHOW CREATE EVENT <20><><EFBFBD><EFBFBD>21;
insert into mysql.event (db, name, body, definer, interval_value, interval_field) values (database(), "root22", "select 1", user(), 100, "SECOND_MICROSECOND"); insert into mysql.event (db, name, body, definer, interval_value, interval_field) values (database(), "root22", "select 1", user(), 100, "SECOND_MICROSECOND");
--error 1235 --error ER_NOT_SUPPORTED_YET
show create event root22; show create event root22;
--error 1235 --error ER_NOT_SUPPORTED_YET
SHOW EVENTS; SHOW EVENTS;
drop event root22; drop event root22;
drop event root6; drop event root6;
@ -239,82 +239,6 @@ DROP EVENT intact_check;
# mysql.event intact checking end # mysql.event intact checking end
# #
#
#INFORMATION_SCHEMA.EVENTS test begin
#
create event one_event on schedule every 10 second do select 123;
--replace_column 8 # 9 #
SHOW EVENTS;
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;
CREATE DATABASE events_test2;
CREATE USER ev_test@localhost;
GRANT ALL ON events_test.* to ev_test@localhost;
GRANT ALL on events_test2.* to ev_test@localhost;
REVOKE EVENT ON events_test2.* FROM ev_test@localhost;
REVOKE PROCESS on *.* from ev_test@localhost;
#now we are on con1
connect (ev_con1,localhost,ev_test,,events_test2);
select "NEW CONNECTION";
SELECT USER(), DATABASE();
SHOW GRANTS;
--echo "Here comes an error:";
#NO EVENT_ACL on events_test2
--error 1044
SHOW EVENTS;
USE events_test;
--echo "Now the list should be empty:";
--replace_column 8 # 9 #
SHOW EVENTS;
#now create an event with the same name but we are different user
select concat("Let's create some new events from the name of ",user());
create event one_event on schedule every 20 second do select 123;
create event two_event on schedule every 20 second on completion not preserve comment "two event" do select 123;
create event three_event on schedule every 20 second on completion preserve comment "three event" do select 123;
--echo "Now we should see 3 events:";
--replace_column 8 # 9 #
SHOW EVENTS;
--echo "This should show us only 3 events:";
--replace_column 8 # 9 #
SHOW EVENTS;
--echo "This should show us only 2 events:";
--replace_column 8 # 9 #
SHOW EVENTS LIKE 't%event';
--echo "This should show us no events:";
--replace_column 8 # 9 #
SHOW EVENTS FROM test LIKE '%';
#ok, we are back
connection default;
DROP DATABASE events_test2;
--echo "should see 1 event:";
--replace_column 8 # 9 #
SHOW EVENTS;
--echo "we should see 4 events now:";
--replace_column 8 # 9 #
SHOW EVENTS;
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;
connection ev_con1;
drop event one_event;
drop event two_event;
drop event three_event;
disconnect ev_con1;
connection default;
drop user ev_test@localhost;
drop event one_event;
#
##INFORMATION_SCHEMA.EVENTS test end
#
--echo "Sleep a bit so the server closes the second connection"
--sleep 2
create event e_26 on schedule at '2017-01-01 00:00:00' disable do set @a = 5; create event e_26 on schedule at '2017-01-01 00:00:00' disable do set @a = 5;
select db, name, body, definer, convert_tz(execute_at, 'UTC', 'SYSTEM'), on_completion from mysql.event; select db, name, body, definer, convert_tz(execute_at, 'UTC', 'SYSTEM'), on_completion from mysql.event;
drop event e_26; drop event e_26;
@ -358,7 +282,7 @@ select get_lock("test_lock2", 20);
--echo "Create an event which tries to acquire a mutex. The event locks on the mutex" --echo "Create an event which tries to acquire a mutex. The event locks on the mutex"
create event закачка on schedule every 10 hour do select get_lock("test_lock2", 20); create event закачка on schedule every 10 hour do select get_lock("test_lock2", 20);
--echo "Let some time pass to the event starts" --echo "Let some time pass to the event starts"
--sleep 2 --sleep 1
--echo "Should have only 2 processes: the scheduler and the locked event" --echo "Should have only 2 processes: the scheduler and the locked event"
select /*2*/ user, host, db, command, state, info from information_schema.processlist where info is null or info not like '%processlist%' order by info;--echo "Release the mutex, the event worker should finish." select /*2*/ user, host, db, command, state, info from information_schema.processlist where info is null or info not like '%processlist%' order by info;--echo "Release the mutex, the event worker should finish."
--echo "Release the mutex, the event worker should finish." --echo "Release the mutex, the event worker should finish."
@ -409,7 +333,6 @@ create event white_space on schedule every 10 hour disable do
select 2; select 2;
select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space'; select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
drop event white_space; drop event white_space;
create event white_space on schedule every 10 hour disable do select 3; create event white_space on schedule every 10 hour disable do select 3;
select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space'; select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';

4
scripts/mysql_fix_privilege_tables.sql
View File

@ -570,7 +570,7 @@ DROP PROCEDURE create_log_tables;
CREATE TABLE event ( CREATE TABLE event (
db char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '', db char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '',
name char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '', name char(64) CHARACTER SET utf8 NOT NULL default '',
body longblob NOT NULL, body longblob NOT NULL,
definer char(77) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '', definer char(77) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL default '',
execute_at DATETIME default NULL, execute_at DATETIME default NULL,
@ -636,7 +636,7 @@ SELECT @hadEventPriv :=1 FROM user WHERE Event_priv LIKE '%';
ALTER TABLE user add Event_priv enum('N','Y') character set utf8 DEFAULT 'N' NOT NULL AFTER Create_user_priv; ALTER TABLE user add Event_priv enum('N','Y') character set utf8 DEFAULT 'N' NOT NULL AFTER Create_user_priv;
ALTER TABLE db add Event_priv enum('N','Y') character set utf8 DEFAULT 'N' NOT NULL; ALTER TABLE db add Event_priv enum('N','Y') character set utf8 DEFAULT 'N' NOT NULL;
ALTER TABLE event DROP PRIMARY KEY; ALTER TABLE event DROP PRIMARY KEY;
ALTER TABLE event ADD PRIMARY KEY(definer, db, name); ALTER TABLE event ADD PRIMARY KEY(db, name);
ALTER TABLE event ADD sql_mode ALTER TABLE event ADD sql_mode
set('REAL_AS_FLOAT', set('REAL_AS_FLOAT',
'PIPES_AS_CONCAT', 'PIPES_AS_CONCAT',

81
sql/event.cc
View File

@ -456,7 +456,7 @@ Events::open_event_table(THD *thd, enum thr_lock_type lock_type,
SYNOPSIS SYNOPSIS
evex_db_find_event_aux() evex_db_find_event_aux()
thd Thread context thd Thread context
et evet_timed object containing dbname, name & definer et event_timed object containing dbname & name
table TABLE object for open mysql.event table. table TABLE object for open mysql.event table.
RETURN VALUE RETURN VALUE
@ -467,8 +467,7 @@ Events::open_event_table(THD *thd, enum thr_lock_type lock_type,
inline int inline int
evex_db_find_event_aux(THD *thd, Event_timed *et, TABLE *table) evex_db_find_event_aux(THD *thd, Event_timed *et, TABLE *table)
{ {
return evex_db_find_event_by_name(thd, et->dbname, et->name, return evex_db_find_event_by_name(thd, et->dbname, et->name, table);
et->definer, table);
} }
@ -490,7 +489,6 @@ evex_db_find_event_aux(THD *thd, Event_timed *et, TABLE *table)
int int
evex_db_find_event_by_name(THD *thd, const LEX_STRING dbname, evex_db_find_event_by_name(THD *thd, const LEX_STRING dbname,
const LEX_STRING ev_name, const LEX_STRING ev_name,
const LEX_STRING user_name,
TABLE *table) TABLE *table)
{ {
byte key[MAX_KEY_LENGTH]; byte key[MAX_KEY_LENGTH];
@ -505,8 +503,7 @@ evex_db_find_event_by_name(THD *thd, const LEX_STRING dbname,
same fields. same fields.
*/ */
if (dbname.length > table->field[Events::FIELD_DB]->field_length || if (dbname.length > table->field[Events::FIELD_DB]->field_length ||
ev_name.length > table->field[Events::FIELD_NAME]->field_length || ev_name.length > table->field[Events::FIELD_NAME]->field_length)
user_name.length > table->field[Events::FIELD_DEFINER]->field_length)
DBUG_RETURN(EVEX_KEY_NOT_FOUND); DBUG_RETURN(EVEX_KEY_NOT_FOUND);
@ -514,9 +511,6 @@ evex_db_find_event_by_name(THD *thd, const LEX_STRING dbname,
&my_charset_bin); &my_charset_bin);
table->field[Events::FIELD_NAME]->store(ev_name.str, ev_name.length, table->field[Events::FIELD_NAME]->store(ev_name.str, ev_name.length,
&my_charset_bin); &my_charset_bin);
table->field[Events::FIELD_DEFINER]->store(user_name.str,
user_name.length,
&my_charset_bin);
key_copy(key, table->record[0], table->key_info, table->key_info->key_length); key_copy(key, table->record[0], table->key_info, table->key_info->key_length);
@ -553,6 +547,7 @@ evex_db_find_event_by_name(THD *thd, const LEX_STRING dbname,
static int static int
evex_fill_row(THD *thd, TABLE *table, Event_timed *et, my_bool is_update) evex_fill_row(THD *thd, TABLE *table, Event_timed *et, my_bool is_update)
{ {
CHARSET_INFO *scs= system_charset_info;
enum Events::enum_table_field field_num; enum Events::enum_table_field field_num;
DBUG_ENTER("evex_fill_row"); DBUG_ENTER("evex_fill_row");
@ -561,20 +556,23 @@ evex_fill_row(THD *thd, TABLE *table, Event_timed *et, my_bool is_update)
DBUG_PRINT("info", ("name =[%s]", et->name.str)); DBUG_PRINT("info", ("name =[%s]", et->name.str));
DBUG_PRINT("info", ("body =[%s]", et->body.str)); DBUG_PRINT("info", ("body =[%s]", et->body.str));
if (table->field[field_num= Events::FIELD_DEFINER]->
store(et->definer.str, et->definer.length, scs))
goto err_truncate;
if (table->field[field_num= Events::FIELD_DB]-> if (table->field[field_num= Events::FIELD_DB]->
store(et->dbname.str, et->dbname.length, system_charset_info)) store(et->dbname.str, et->dbname.length, scs))
goto trunc_err; goto err_truncate;
if (table->field[field_num= Events::FIELD_NAME]-> if (table->field[field_num= Events::FIELD_NAME]->
store(et->name.str, et->name.length, system_charset_info)) store(et->name.str, et->name.length, scs))
goto trunc_err; goto err_truncate;
/* both ON_COMPLETION and STATUS are NOT NULL thus not calling set_notnull()*/ /* both ON_COMPLETION and STATUS are NOT NULL thus not calling set_notnull()*/
table->field[Events::FIELD_ON_COMPLETION]-> table->field[Events::FIELD_ON_COMPLETION]->
store((longlong)et->on_completion, true); store((longlong)et->on_completion, true);
table->field[Events::FIELD_STATUS]-> table->field[Events::FIELD_STATUS]->store((longlong)et->status, true);
store((longlong)et->status, true);
/* /*
Change the SQL_MODE only if body was present in an ALTER EVENT and of course Change the SQL_MODE only if body was present in an ALTER EVENT and of course
@ -586,8 +584,8 @@ evex_fill_row(THD *thd, TABLE *table, Event_timed *et, my_bool is_update)
store((longlong)thd->variables.sql_mode, true); store((longlong)thd->variables.sql_mode, true);
if (table->field[field_num= Events::FIELD_BODY]-> if (table->field[field_num= Events::FIELD_BODY]->
store(et->body.str, et->body.length, system_charset_info)) store(et->body.str, et->body.length, scs))
goto trunc_err; goto err_truncate;
} }
if (et->expression) if (et->expression)
@ -645,12 +643,12 @@ evex_fill_row(THD *thd, TABLE *table, Event_timed *et, my_bool is_update)
if (et->comment.str) if (et->comment.str)
{ {
if (table->field[field_num= Events::FIELD_COMMENT]-> if (table->field[field_num= Events::FIELD_COMMENT]->
store(et->comment.str, et->comment.length, system_charset_info)) store(et->comment.str, et->comment.length, scs))
goto trunc_err; goto err_truncate;
} }
DBUG_RETURN(0); DBUG_RETURN(0);
trunc_err: err_truncate:
my_error(ER_EVENT_DATA_TOO_LONG, MYF(0), table->field[field_num]->field_name); my_error(ER_EVENT_DATA_TOO_LONG, MYF(0), table->field[field_num]->field_name);
DBUG_RETURN(EVEX_GENERAL_ERROR); DBUG_RETURN(EVEX_GENERAL_ERROR);
} }
@ -746,13 +744,6 @@ db_create_event(THD *thd, Event_timed *et, my_bool create_if_not,
goto err; goto err;
} }
if ((ret=table->field[Events::FIELD_DEFINER]->
store(et->definer.str, et->definer.length, scs)))
{
my_error(ER_EVENT_STORE_FAILED, MYF(0), et->name.str, ret);
goto err;
}
((Field_timestamp *)table->field[Events::FIELD_CREATED])->set_time(); ((Field_timestamp *)table->field[Events::FIELD_CREATED])->set_time();
/* /*
@ -816,6 +807,7 @@ err:
static int static int
db_update_event(THD *thd, Event_timed *et, sp_name *new_name) db_update_event(THD *thd, Event_timed *et, sp_name *new_name)
{ {
CHARSET_INFO *scs= system_charset_info;
TABLE *table; TABLE *table;
int ret= EVEX_OPEN_TABLE_FAILED; int ret= EVEX_OPEN_TABLE_FAILED;
DBUG_ENTER("db_update_event"); DBUG_ENTER("db_update_event");
@ -835,22 +827,21 @@ db_update_event(THD *thd, Event_timed *et, sp_name *new_name)
/* first look whether we overwrite */ /* first look whether we overwrite */
if (new_name) if (new_name)
{ {
if (!sortcmp_lex_string(et->name, new_name->m_name, system_charset_info) && if (!sortcmp_lex_string(et->name, new_name->m_name, scs) &&
!sortcmp_lex_string(et->dbname, new_name->m_db, system_charset_info)) !sortcmp_lex_string(et->dbname, new_name->m_db, scs))
{ {
my_error(ER_EVENT_SAME_NAME, MYF(0), et->name.str); my_error(ER_EVENT_SAME_NAME, MYF(0), et->name.str);
goto err; goto err;
} }
if (!evex_db_find_event_by_name(thd, new_name->m_db, new_name->m_name, if (!evex_db_find_event_by_name(thd,new_name->m_db,new_name->m_name,table))
et->definer, table))
{ {
my_error(ER_EVENT_ALREADY_EXISTS, MYF(0), new_name->m_name.str); my_error(ER_EVENT_ALREADY_EXISTS, MYF(0), new_name->m_name.str);
goto err; goto err;
} }
} }
/* /*
...and then whether there is such an event. don't exchange the blocks ...and then if there is such an event. Don't exchange the blocks
because you will get error 120 from table handler because new_name will because you will get error 120 from table handler because new_name will
overwrite the key and SE will tell us that it cannot find the already found overwrite the key and SE will tell us that it cannot find the already found
row (copied into record[1] later row (copied into record[1] later
@ -866,16 +857,19 @@ db_update_event(THD *thd, Event_timed *et, sp_name *new_name)
/* Don't update create on row update. */ /* Don't update create on row update. */
table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET; table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
/* evex_fill_row() calls my_error() in case of error so no need to handle it here */ /*
evex_fill_row() calls my_error() in case of error so no need to
handle it here
*/
if ((ret= evex_fill_row(thd, table, et, true))) if ((ret= evex_fill_row(thd, table, et, true)))
goto err; goto err;
if (new_name) if (new_name)
{ {
table->field[Events::FIELD_DB]-> table->field[Events::FIELD_DB]->
store(new_name->m_db.str, new_name->m_db.length, system_charset_info); store(new_name->m_db.str, new_name->m_db.length, scs);
table->field[Events::FIELD_NAME]-> table->field[Events::FIELD_NAME]->
store(new_name->m_name.str, new_name->m_name.length, system_charset_info); store(new_name->m_name.str, new_name->m_name.length, scs);
} }
if ((ret= table->file->ha_update_row(table->record[1], table->record[0]))) if ((ret= table->file->ha_update_row(table->record[1], table->record[0])))
@ -903,7 +897,6 @@ err:
db_find_event() db_find_event()
thd THD thd THD
name the name of the event to find name the name of the event to find
definer who owns the event
ett event's data if event is found ett event's data if event is found
tbl TABLE object to use when not NULL tbl TABLE object to use when not NULL
@ -917,12 +910,12 @@ err:
*/ */
int int
db_find_event(THD *thd, sp_name *name, LEX_STRING *definer, Event_timed **ett, db_find_event(THD *thd, sp_name *name, Event_timed **ett, TABLE *tbl,
TABLE *tbl, MEM_ROOT *root) MEM_ROOT *root)
{ {
TABLE *table; TABLE *table;
int ret; int ret;
Event_timed *et=NULL; Event_timed *et= NULL;
DBUG_ENTER("db_find_event"); DBUG_ENTER("db_find_event");
DBUG_PRINT("enter", ("name: %*s", name->m_name.length, name->m_name.str)); DBUG_PRINT("enter", ("name: %*s", name->m_name.length, name->m_name.str));
@ -938,8 +931,7 @@ db_find_event(THD *thd, sp_name *name, LEX_STRING *definer, Event_timed **ett,
goto done; goto done;
} }
if ((ret= evex_db_find_event_by_name(thd, name->m_db, name->m_name, *definer, if ((ret= evex_db_find_event_by_name(thd, name->m_db, name->m_name, table)))
table)))
{ {
my_error(ER_EVENT_DOES_NOT_EXIST, MYF(0), name->m_name.str); my_error(ER_EVENT_DOES_NOT_EXIST, MYF(0), name->m_name.str);
goto done; goto done;
@ -959,7 +951,7 @@ db_find_event(THD *thd, sp_name *name, LEX_STRING *definer, Event_timed **ett,
} }
done: done:
if (ret && et) if (ret)
{ {
delete et; delete et;
et= 0; et= 0;
@ -1166,7 +1158,6 @@ Events::drop_event(THD *thd, Event_timed *et, bool drop_if_exists,
Events::show_create_event() Events::show_create_event()
thd THD thd THD
spn the name of the event (db, name) spn the name of the event (db, name)
definer the definer of the event
RETURN VALUE RETURN VALUE
0 OK 0 OK
@ -1174,7 +1165,7 @@ Events::drop_event(THD *thd, Event_timed *et, bool drop_if_exists,
*/ */
int int
Events::show_create_event(THD *thd, sp_name *spn, LEX_STRING definer) Events::show_create_event(THD *thd, sp_name *spn)
{ {
int ret; int ret;
Event_timed *et= NULL; Event_timed *et= NULL;
@ -1184,7 +1175,7 @@ Events::show_create_event(THD *thd, sp_name *spn, LEX_STRING definer)
DBUG_PRINT("enter", ("name: %*s", spn->m_name.length, spn->m_name.str)); DBUG_PRINT("enter", ("name: %*s", spn->m_name.length, spn->m_name.str));
thd->reset_n_backup_open_tables_state(&backup); thd->reset_n_backup_open_tables_state(&backup);
ret= db_find_event(thd, spn, &definer, &et, NULL, thd->mem_root); ret= db_find_event(thd, spn, &et, NULL, thd->mem_root);
thd->restore_backup_open_tables_state(&backup); thd->restore_backup_open_tables_state(&backup);
if (!ret) if (!ret)

2
sql/event.h
View File

@ -85,7 +85,7 @@ public:
open_event_table(THD *thd, enum thr_lock_type lock_type, TABLE **table); open_event_table(THD *thd, enum thr_lock_type lock_type, TABLE **table);
static int static int
show_create_event(THD *thd, sp_name *spn, LEX_STRING definer); show_create_event(THD *thd, sp_name *spn);
static int static int
reconstruct_interval_expression(String *buf, interval_type interval, reconstruct_interval_expression(String *buf, interval_type interval,

5
sql/event_priv.h
View File

@ -33,7 +33,6 @@ my_time_compare(TIME *a, TIME *b);
int int
evex_db_find_event_by_name(THD *thd, const LEX_STRING dbname, evex_db_find_event_by_name(THD *thd, const LEX_STRING dbname,
const LEX_STRING ev_name, const LEX_STRING ev_name,
const LEX_STRING user_name,
TABLE *table); TABLE *table);
int int
@ -43,8 +42,8 @@ int
db_drop_event(THD *thd, Event_timed *et, bool drop_if_exists, db_drop_event(THD *thd, Event_timed *et, bool drop_if_exists,
uint *rows_affected); uint *rows_affected);
int int
db_find_event(THD *thd, sp_name *name, LEX_STRING *definer, Event_timed **ett, db_find_event(THD *thd, sp_name *name, Event_timed **ett, TABLE *tbl,
TABLE *tbl, MEM_ROOT *root); MEM_ROOT *root);
int int
db_create_event(THD *thd, Event_timed *et, my_bool create_if_not, db_create_event(THD *thd, Event_timed *et, my_bool create_if_not,

14
sql/event_scheduler.cc
View File

@ -1292,11 +1292,17 @@ Event_scheduler::run(THD *thd)
/* Skip disabled events */ /* Skip disabled events */
if (et->status != Event_timed::ENABLED) if (et->status != Event_timed::ENABLED)
{ {
sql_print_error("SCHEDULER: Found a disabled event %*s.%*s in the queue", /*
It could be a one-timer scheduled for a time, already in the past when the
scheduler was suspended.
*/
sql_print_information("SCHEDULER: Found a disabled event %*s.%*s in the queue",
et->dbname.length, et->dbname.str, et->name.length, et->dbname.length, et->dbname.str, et->name.length,
et->name.str); et->name.str);
queue_remove(&queue, 0); queue_remove(&queue, 0);
/* ToDo: check this again */ /* ToDo: check this again */
if (et->dropped)
et->drop(thd);
delete et; delete et;
UNLOCK_SCHEDULER_DATA(); UNLOCK_SCHEDULER_DATA();
continue; continue;
@ -1805,7 +1811,10 @@ Event_scheduler::check_n_suspend_if_needed(THD *thd)
DBUG_PRINT("info", ("We have to recompute the execution times")); DBUG_PRINT("info", ("We have to recompute the execution times"));
for (i= 0; i < queue.elements; i++) for (i= 0; i < queue.elements; i++)
{
((Event_timed*)queue_element(&queue, i))->compute_next_execution_time(); ((Event_timed*)queue_element(&queue, i))->compute_next_execution_time();
((Event_timed*)queue_element(&queue, i))->update_fields(thd);
}
queue_fix(&queue); queue_fix(&queue);
} }
/* This will implicitly unlock LOCK_scheduler_data */ /* This will implicitly unlock LOCK_scheduler_data */
@ -2050,8 +2059,7 @@ Event_scheduler::load_event(THD *thd, Event_timed *etn, Event_timed **etn_new)
/* No need to use my_error() here because db_find_event() has done it */ /* No need to use my_error() here because db_find_event() has done it */
{ {
sp_name spn(etn->dbname, etn->name); sp_name spn(etn->dbname, etn->name);
ret= db_find_event(thd, &spn, &etn->definer, &et_loaded, NULL, ret= db_find_event(thd, &spn, &et_loaded, NULL, &scheduler_root);
&scheduler_root);
} }
thd->restore_backup_open_tables_state(&backup); thd->restore_backup_open_tables_state(&backup);
/* In this case no memory was allocated so we don't need to clean */ /* In this case no memory was allocated so we don't need to clean */

9
sql/event_timed.cc
View File

@ -961,7 +961,7 @@ Event_timed::compute_next_execution_time()
} }
goto ret; goto ret;
} }
current_thd->end_time();
my_tz_UTC->gmt_sec_to_TIME(&time_now, current_thd->query_start()); my_tz_UTC->gmt_sec_to_TIME(&time_now, current_thd->query_start());
DBUG_PRINT("info",("NOW=[%llu]", TIME_to_ulonglong_datetime(&time_now))); DBUG_PRINT("info",("NOW=[%llu]", TIME_to_ulonglong_datetime(&time_now)));
@ -975,6 +975,7 @@ Event_timed::compute_next_execution_time()
execute_at_null= TRUE; execute_at_null= TRUE;
if (on_completion == Event_timed::ON_COMPLETION_DROP) if (on_completion == Event_timed::ON_COMPLETION_DROP)
dropped= true; dropped= true;
DBUG_PRINT("info", ("Dropped=%d", dropped));
status= Event_timed::DISABLED; status= Event_timed::DISABLED;
status_changed= true; status_changed= true;
@ -1225,7 +1226,7 @@ Event_timed::update_fields(THD *thd)
{ {
TABLE *table; TABLE *table;
Open_tables_state backup; Open_tables_state backup;
int ret= 0; int ret;
DBUG_ENTER("Event_timed::update_time_fields"); DBUG_ENTER("Event_timed::update_time_fields");
@ -1233,7 +1234,7 @@ Event_timed::update_fields(THD *thd)
/* No need to update if nothing has changed */ /* No need to update if nothing has changed */
if (!(status_changed || last_executed_changed)) if (!(status_changed || last_executed_changed))
goto done; DBUG_RETURN(0);
thd->reset_n_backup_open_tables_state(&backup); thd->reset_n_backup_open_tables_state(&backup);
@ -1244,7 +1245,7 @@ Event_timed::update_fields(THD *thd)
} }
if ((ret= evex_db_find_event_by_name(thd, dbname, name, definer, table))) if ((ret= evex_db_find_event_by_name(thd, dbname, name, table)))
goto done; goto done;
store_record(table,record[1]); store_record(table,record[1]);

2
sql/sql_parse.cc
View File

@ -3884,7 +3884,7 @@ end_with_restore_list:
my_error(ER_TOO_LONG_IDENT, MYF(0), lex->spname->m_name.str); my_error(ER_TOO_LONG_IDENT, MYF(0), lex->spname->m_name.str);
goto error; goto error;
} }
res= Events::show_create_event(thd, lex->spname, lex->et->definer); res= Events::show_create_event(thd, lex->spname);
break; break;
} }
#ifndef DBUG_OFF #ifndef DBUG_OFF

264
sql/sql_show.cc
View File

@ -4020,8 +4020,24 @@ static interval_type get_real_interval_type(interval_type i_type)
extern LEX_STRING interval_type_to_name[]; extern LEX_STRING interval_type_to_name[];
/*
Loads an event from mysql.event and copies it's data to a row of
I_S.EVENTS
Synopsis
copy_event_to_schema_table()
thd Thread
sch_table The schema table (information_schema.event)
event_table The event table to use for loading (mysql.event).
Returns
0 OK
1 Error
*/
static int static int
fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table) copy_event_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
{ {
const char *wild= thd->lex->wild ? thd->lex->wild->ptr() : NullS; const char *wild= thd->lex->wild ? thd->lex->wild->ptr() : NullS;
CHARSET_INFO *scs= system_charset_info; CHARSET_INFO *scs= system_charset_info;
@ -4040,6 +4056,16 @@ fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
if (!(!wild || !wild[0] || !wild_compare(et.name.str, wild, 0))) if (!(!wild || !wild[0] || !wild_compare(et.name.str, wild, 0)))
DBUG_RETURN(0); DBUG_RETURN(0);
/*
Skip events in schemas one does not have access to. The check is
optimized. It's guaranteed in case of SHOW EVENTS that the user
has access.
*/
if (thd->lex->orig_sql_command != SQLCOM_SHOW_EVENTS &&
check_access(thd, EVENT_ACL, et.dbname.str, 0, 0, 1,
is_schema_db(et.dbname.str)))
DBUG_RETURN(0);
/* ->field[0] is EVENT_CATALOG and is by default NULL */ /* ->field[0] is EVENT_CATALOG and is by default NULL */
sch_table->field[1]->store(et.dbname.str, et.dbname.length, scs); sch_table->field[1]->store(et.dbname.str, et.dbname.length, scs);
@ -4063,8 +4089,7 @@ fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
/* type */ /* type */
sch_table->field[5]->store(STRING_WITH_LEN("RECURRING"), scs); sch_table->field[5]->store(STRING_WITH_LEN("RECURRING"), scs);
if (Events::reconstruct_interval_expression(&show_str, if (Events::reconstruct_interval_expression(&show_str, et.interval,
et.interval,
et.expression)) et.expression))
DBUG_RETURN(1); DBUG_RETURN(1);
@ -4075,7 +4100,7 @@ fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
sch_table->field[8]->set_notnull(); sch_table->field[8]->set_notnull();
sch_table->field[8]->store(ival->str, ival->length, scs); sch_table->field[8]->store(ival->str, ival->length, scs);
//starts & ends /* starts & ends */
sch_table->field[10]->set_notnull(); sch_table->field[10]->set_notnull();
sch_table->field[10]->store_time(&et.starts, MYSQL_TIMESTAMP_DATETIME); sch_table->field[10]->store_time(&et.starts, MYSQL_TIMESTAMP_DATETIME);
@ -4094,13 +4119,13 @@ fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
sch_table->field[6]->store_time(&et.execute_at, MYSQL_TIMESTAMP_DATETIME); sch_table->field[6]->store_time(&et.execute_at, MYSQL_TIMESTAMP_DATETIME);
} }
//status /* status */
if (et.status == Event_timed::ENABLED) if (et.status == Event_timed::ENABLED)
sch_table->field[12]->store(STRING_WITH_LEN("ENABLED"), scs); sch_table->field[12]->store(STRING_WITH_LEN("ENABLED"), scs);
else else
sch_table->field[12]->store(STRING_WITH_LEN("DISABLED"), scs); sch_table->field[12]->store(STRING_WITH_LEN("DISABLED"), scs);
//on_completion /* on_completion */
if (et.on_completion == Event_timed::ON_COMPLETION_DROP) if (et.on_completion == Event_timed::ON_COMPLETION_DROP)
sch_table->field[13]->store(STRING_WITH_LEN("NOT PRESERVE"), scs); sch_table->field[13]->store(STRING_WITH_LEN("NOT PRESERVE"), scs);
else else
@ -4130,98 +4155,179 @@ fill_events_copy_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table)
} }
int fill_schema_events(THD *thd, TABLE_LIST *tables, COND *cond) /*
Performs an index scan of event_table (mysql.event) and fills schema_table.
Synopsis
events_table_index_read_for_db()
thd Thread
schema_table The I_S.EVENTS table
event_table The event table to use for loading (mysql.event)
Returns
0 OK
1 Error
*/
static
int events_table_index_read_for_db(THD *thd, TABLE *schema_table,
TABLE *event_table)
{ {
TABLE *table= tables->table;
CHARSET_INFO *scs= system_charset_info;
TABLE *event_table= NULL;
Open_tables_state backup;
int ret=0; int ret=0;
bool verbose= false; CHARSET_INFO *scs= system_charset_info;
char definer[HOSTNAME_LENGTH+USERNAME_LENGTH+2]; KEY *key_info;
bool use_prefix_scanning= true; uint key_len;
uint key_len= 0;
byte *key_buf= NULL; byte *key_buf= NULL;
LINT_INIT(key_buf); LINT_INIT(key_buf);
DBUG_ENTER("fill_schema_events"); DBUG_ENTER("schema_events_do_index_scan");
strxmov(definer, thd->security_ctx->priv_user,"@",thd->security_ctx->priv_host,
NullS);
DBUG_PRINT("info",("db=%s current_user=%s", thd->lex->select_lex.db, definer));
thd->reset_n_backup_open_tables_state(&backup);
if ((ret= Events::open_event_table(thd, TL_READ, &event_table)))
{
sql_print_error("Table mysql.event is damaged.");
ret= 1;
goto err;
}
DBUG_PRINT("info", ("Using prefix scanning on PK"));
event_table->file->ha_index_init(0, 1); event_table->file->ha_index_init(0, 1);
/* see others' events only if you have PROCESS_ACL !! */
verbose= ((thd->lex->verbose ||
thd->lex->orig_sql_command != SQLCOM_SHOW_EVENTS) &&
(thd->security_ctx->master_access & PROCESS_ACL));
if (verbose && thd->security_ctx->user)
{
ret= event_table->file->index_first(event_table->record[0]);
use_prefix_scanning= false;
}
else
{
event_table->field[Events::FIELD_DEFINER]->
store(definer, strlen(definer), scs);
key_len= event_table->key_info->key_part[0].store_length;
if (thd->lex->select_lex.db)
{
event_table->field[Events::FIELD_DB]-> event_table->field[Events::FIELD_DB]->
store(thd->lex->select_lex.db, strlen(thd->lex->select_lex.db), scs); store(thd->lex->select_lex.db, strlen(thd->lex->select_lex.db), scs);
key_len+= event_table->key_info->key_part[1].store_length; key_info= event_table->key_info;
} key_len= key_info->key_part[0].store_length;
if (!(key_buf= (byte *)alloc_root(thd->mem_root, key_len))) if (!(key_buf= (byte *)alloc_root(thd->mem_root, key_len)))
{ {
ret= 1; ret= 1;
goto err; /* don't send error, it would be done by sql_alloc_error_handler() */
} }
key_copy(key_buf, event_table->record[0], event_table->key_info, key_len);
ret= event_table->file->index_read(event_table->record[0], key_buf, key_len,
HA_READ_PREFIX);
}
if (ret)
{
ret= (ret == HA_ERR_END_OF_FILE || ret == HA_ERR_KEY_NOT_FOUND) ? 0 : 1;
goto err;
}
while (!ret)
{
if ((ret= fill_events_copy_to_schema_table(thd, table, event_table)))
goto err;
if (use_prefix_scanning)
ret= event_table->file->
index_next_same(event_table->record[0], key_buf, key_len);
else else
ret= event_table->file->index_next(event_table->record[0]);
}
// ret is guaranteed to be != 0
ret= (ret != HA_ERR_END_OF_FILE);
err:
if (event_table)
{ {
key_copy(key_buf, event_table->record[0], key_info, key_len);
if (!(ret= event_table->file->index_read(event_table->record[0], key_buf,
key_len, HA_READ_PREFIX)))
{
DBUG_PRINT("info",("Found rows. Let's retrieve them. ret=%d", ret));
do
{
ret= copy_event_to_schema_table(thd, schema_table, event_table);
if (ret == 0)
ret= event_table->file->index_next_same(event_table->record[0],
key_buf, key_len);
} while (ret == 0);
}
DBUG_PRINT("info", ("Scan finished. ret=%d", ret));
}
event_table->file->ha_index_end(); event_table->file->ha_index_end();
close_thread_tables(thd); /* ret is guaranteed to be != 0 */
if (ret == HA_ERR_END_OF_FILE || ret == HA_ERR_KEY_NOT_FOUND)
DBUG_RETURN(0);
DBUG_RETURN(1);
}
/*
Performs a table scan of event_table (mysql.event) and fills schema_table.
Synopsis
events_table_scan_all()
thd Thread
schema_table The I_S.EVENTS in memory table
event_table The event table to use for loading.
Returns
0 OK
1 Error
*/
static
int events_table_scan_all(THD *thd, TABLE *schema_table,
TABLE *event_table)
{
int ret;
READ_RECORD read_record_info;
DBUG_ENTER("schema_events_do_table_scan");
init_read_record(&read_record_info, thd, event_table, NULL, 1, 0);
/*
rr_sequential, in read_record(), returns 137==HA_ERR_END_OF_FILE,
but rr_handle_error returns -1 for that reason. Thus, read_record()
returns -1 eventually.
*/
do
{
ret= read_record_info.read_record(&read_record_info);
if (ret == 0)
ret= copy_event_to_schema_table(thd, schema_table, event_table);
}
while (ret == 0);
DBUG_PRINT("info", ("Scan finished. ret=%d", ret));
end_read_record(&read_record_info);
/* ret is guaranteed to be != 0 */
DBUG_RETURN(ret == -1? 0:1);
}
/*
Fills I_S.EVENTS with data loaded from mysql.event. Also used by
SHOW EVENTS
Synopsis
fill_schema_events()
thd Thread
tables The schema table
cond Unused
Returns
0 OK
1 Error
*/
int fill_schema_events(THD *thd, TABLE_LIST *tables, COND * /* cond */)
{
TABLE *schema_table= tables->table;
TABLE *event_table= NULL;
Open_tables_state backup;
int ret= 0;
DBUG_ENTER("fill_schema_events");
/*
If it's SHOW EVENTS then thd->lex->select_lex.db is guaranteed not to
be NULL. Let's do an assert anyway.
*/
if (thd->lex->orig_sql_command == SQLCOM_SHOW_EVENTS)
{
DBUG_ASSERT(thd->lex->select_lex.db);
if (check_access(thd, EVENT_ACL, thd->lex->select_lex.db, 0, 0, 0,
is_schema_db(thd->lex->select_lex.db)))
DBUG_RETURN(1);
} }
DBUG_PRINT("info",("db=%s", thd->lex->select_lex.db?
thd->lex->select_lex.db:"(null)"));
thd->reset_n_backup_open_tables_state(&backup);
if (Events::open_event_table(thd, TL_READ, &event_table))
{
sql_print_error("Table mysql.event is damaged.");
thd->restore_backup_open_tables_state(&backup); thd->restore_backup_open_tables_state(&backup);
DBUG_RETURN(1);
}
/*
1. SELECT I_S => use table scan. I_S.EVENTS does not guarantee order
thus we won't order it. OTOH, SHOW EVENTS will be
ordered.
2. SHOW EVENTS => PRIMARY KEY with prefix scanning on (db)
Reasoning: Events are per schema, therefore a scan over an index
will save use from doing a table scan and comparing
every single row's `db` with the schema which we show.
*/
if (thd->lex->orig_sql_command == SQLCOM_SHOW_EVENTS)
ret= events_table_index_read_for_db(thd, schema_table, event_table);
else
ret= events_table_scan_all(thd, schema_table, event_table);
close_thread_tables(thd);
thd->restore_backup_open_tables_state(&backup);
DBUG_PRINT("info", ("Return code=%d", ret));
DBUG_RETURN(ret); DBUG_RETURN(ret);
} }