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# Copyright (C) 2010 Patrick Crews. All rights reserved.
# Use is subject to license terms.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA
# This grammar is designed to generate a workload suitable for testing the Drizzle
# transaction_log. It is intended for use with --threads=1 and with the DrizzleTransactionLog Validator
# Using the Validator requires that we have a validation server running somewhere so we
# can try to replicate from SQL generated from the transaction_log (via drizzled/message/transaction_reader
#
# This is still a work in progress and is likely to change.
# We are generating a fair number of invalid queries and we could tighten things up, however,
# we have found a number of bugs with this grammar as it currently exists.
query:
transaction | transaction |
normal_query | normal_query | normal_query ;
normal_query:
select | select |
select | select |
select | select |
select | select |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
insert_query | update | delete |
SAVEPOINT A /*Generated by THREAD_ID _thread_id*/ |
ROLLBACK TO SAVEPOINT A /*Generated by THREAD_ID _thread_id*/ ;
normal_query_list:
normal_query_list ; normal_query ; normal_query ; normal_query ; normal_query ; normal_query |
normal_query ; normal_query ; normal_query ; normal_query ; normal_query ; normal_query |
normal_query ; normal_query ; normal_query ; normal_query ;
transaction:
SET AUTOCOMMIT=OFF /*Generated by THREAD_ID _thread_id*/ ; START TRANSACTION /*Generated by THREAD_ID _thread_id*/ ; normal_query_list ; end_transaction ; SET AUTOCOMMIT=ON /*Generated by THREAD_ID _thread_id*/ ;
end_transaction:
commit_rollback ;
commit_rollback:
COMMIT /*Generated by THREAD_ID _thread_id*/|
COMMIT /*Generated by THREAD_ID _thread_id*/|
COMMIT /*Generated by THREAD_ID _thread_id*/|
COMMIT /*Generated by THREAD_ID _thread_id*/|
COMMIT /*Generated by THREAD_ID _thread_id*/|
ROLLBACK /*Generated by THREAD_ID _thread_id*/;
select:
SELECT select_list FROM join_list where LIMIT large_digit for_update_lock_in_share_mode /*Generated by THREAD_ID _thread_id*/ ;
select_list:
X . _field_key | X . _field_key |
X . `pk` |
X . _field |
* |
( subselect );
subselect:
SELECT _field_key FROM _table WHERE `pk` = value ;
# Use index for all joins
join_list:
_table AS X |
_table AS X LEFT JOIN _table AS Y USING ( _field_key );
for_update_lock_in_share_mode:
| | | | |
FOR UPDATE |
LOCK IN SHARE MODE ;
ignore:
|
IGNORE ;
low_priority:
| | | LOW_PRIORITY;
insert_query:
insert_replace INTO _table ( insert_column_list )
SELECT insert_column_list
FROM _table where_insert
ORDER BY _field_list LIMIT insert_limit /*Generated by THREAD_ID _thread_id*/;
insert_replace:
INSERT | INSERT | INSERT | INSERT | INSERT |
INSERT | INSERT | INSERT | INSERT | INSERT |
REPLACE ;
insert_column_list:
# We use a set column list because even though all tables have the same
# columns, each table has a different order of those columns for
# enhanced randomness
`col_char_10` , `col_char_10_key` , `col_char_10_not_null` , `col_char_10_not_null_key` ,
`col_char_1024` , `col_char_1024_key` , `col_char_1024_not_null` , `col_char_1024_not_null_key` ,
`col_int` , `col_int_key` , `col_int_not_null` , `col_int_not_null_key` ,
`col_bigint` , `col_bigint_key` , `col_bigint_not_null` , `col_bigint_not_null_key` ,
`col_enum` , `col_enum_key` , `col_enum_not_null` , `col_enum_not_null_key` ,
`col_text` , `col_text_key` , `col_text_not_null` , `col_text_not_null_key`
;
update:
UPDATE _table SET update_clause where_insert ORDER BY _field_list LIMIT large_digit /*Generated by THREAD_ID _thread_id*/ ;
update_clause:
no_pk_int_field_name = int_value ;
# We use a smaller limit on DELETE so that we delete less than we insert
delete:
DELETE FROM _table where_insert ORDER BY _field_list LIMIT small_digit /*Generated by THREAD_ID _thread_id*/ ;
quick:
|
QUICK ;
order_by:
| ORDER BY X . _field_key ;
# Use an index at all times
where:
|
WHERE X . _field_key < value | # Use only < to reduce deadlocks
WHERE X . _field_key IN ( value , value , value , value , value ) |
WHERE X . int_field_name BETWEEN small_digit AND large_digit |
WHERE X . int_field_name BETWEEN _tinyint_unsigned AND _int_unsigned ;
where_disabled:
# only used in select's, but causing crashes on bad
# compares like enum to int
WHERE X . _field_key = ( subselect ) ;
where_delete:
| ;
where_insert:
|
WHERE int_field_name compare_operator int_value |
WHERE char_field_name compare_operator char_value |
WHERE int_field_name IN (int_value_list) |
WHERE char_field_name IN (char_value_list) |
WHERE int_field_name BETWEEN int_value AND int_value |
WHERE int_field BETWEEN _tinyint_unsigned AND _int_unsigned |
WHERE int_field BETWEEN small_digit AND large_digit |
where_fuzz ;
where_fuzz:
# rules to introduce some fuzz testing
# we deliberately allow the chance of bad
# comparisons here to see what happens
WHERE _field_key = ( subselect ) |
WHERE _field_key compare_operator value |
WHERE _field_key IN ( subselect ) ;
compare_operator:
= | = | = | = | < | > | <= | >= | != ;
int_value:
_digit | _digit | large_digit | small_digit |
_digit | insert_limit | _tinyint_unsigned |
_digit | _digit | large_digit | small_digit |
_digit | insert_limit | _tinyint_unsigned |
value ;
int_value_list:
int_value_list, int_value | int_value | int_value ;
char_value:
_char | _char | _quid ;
char_value_list:
char_value_list, char_value | char_value | char_value ;
int_field_name:
`pk` | `col_int_key` | `col_int` |
`col_bigint` | `col_bigint_key` |
`col_int_not_null` | `col_int_not_null_key` ;
no_pk_int_field_name:
`col_int_key` | `col_int` |
`col_bigint` | `col_bigint_key` |
`col_int_not_null` | `col_int_not_null_key` ;
char_field_name:
`col_char_10` | `col_char_10_key` | `col_text_not_null` | `col_text_not_null_key` |
`col_text_key` | `col_text` | `col_char_10_not_null_key` | `col_char_10_not_null` |
`col_char_1024` | `col_char_1024_key` | `col_char_1024_not_null` | `col_char_1024_not_null_key` ;
large_digit:
5 | 6 | 7 | 8 ;
small_digit:
1 | 2 | 3 | 4 ;
insert_limit:
10 | 10 | 25 | 25 | 25 | 25 | 50 | 50 | 100 ;
value:
_digit | _tinyint_unsigned | _varchar(1) | _int_unsigned ;
zero_one:
0 | 0 | 1;
|