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moved waypoint assignment code to database trigger (before insert caches)

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ocoliver
2012-11-17 22:52:49 +01:00
parent a4aee625a9
commit 39a25f997f
7 changed files with 990 additions and 1027 deletions
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htdocs/doc/sql/stored-proc/maintain.php
+43 -4
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@@ -521,7 +521,43 @@
IF ISNULL(NEW.`uuid`) OR NEW.`uuid`='' THEN
SET NEW.`uuid`=CREATE_UUID();
END IF;
END;");
/* reserve and set cache waypoint
*
* Table cache_waypoint_pool is used to prevent race conditions
* when 2 caches will be inserted simultaneously
*/
IF ISNULL(NEW.`wp_oc`) OR NEW.`wp_oc`='' THEN
/* cleanup previous assignments failures /*
DELETE FROM `cache_waypoint_pool` WHERE `uuid`=NEW.`uuid`;
/* reserve a waypoint */
UPDATE `cache_waypoint_pool` SET `uuid`=NEW.`uuid` WHERE `uuid` IS NULL ORDER BY WPTODEC(`wp_oc`, '&1') ASC LIMIT 1;
IF (SELECT COUNT(*) FROM `cache_waypoint_pool` WHERE `uuid`=NEW.`uuid`) = 0 THEN
/* waypoint reservation was not successfull. Maybe we are on a development machine, where cronjob for waypoint pool
* generation did not run or the pool is empty. To get a valid waypoint, we simply increment the highest used waypoint by one.
* NOTE: This ignores the setting of $opt['logic']['waypoint_pool']['fill_gaps']
* CAUTION: This statement is realy slow and you should always keep your waypoint pool filled with some waypoint on a production server
*/
INSERT INTO `cache_waypoint_pool` (`wp_oc`, `uuid`)
SELECT DECTOWP(MAX(`dec_wp`)+1, '&1'), NEW.`uuid` AS `uuid`
FROM (
SELECT MAX(WPTODEC(`wp_oc`, '&1')) AS dec_wp FROM `caches` WHERE `wp_oc` REGEXP '&2'
UNION SELECT MAX(WPTODEC(`wp_oc`, '&1')) AS dec_wp FROM `cache_waypoint_pool`
) AS `tbl`;
END IF;
/* query and assign the reserved waypoint */
SET NEW.`wp_oc` = (SELECT `wp_oc` FROM `cache_waypoint_pool` WHERE `uuid`=`NEW`.`uuid`);
END IF;
END;",
$opt['logic']['waypoint_pool']['prefix'],
'^' . $opt['logic']['waypoint_pool']['prefix'] . '[' . $opt['logic']['waypoint_pool']['valid_chars'] . ']{1,}$');
sql_dropTrigger('cachesAfterInsert');
sql("CREATE TRIGGER `cachesAfterInsert` AFTER INSERT ON `caches`
@@ -534,9 +570,12 @@
CALL sp_update_hiddenstat(NEW.`user_id`, FALSE);
IF NEW.`status`=1 THEN
CALL sp_notify_new_cache(NEW.`cache_id`, NEW.`longitude`, NEW.`latitude`);
END IF;
IF NEW.`status`=1 THEN
CALL sp_notify_new_cache(NEW.`cache_id`, NEW.`longitude`, NEW.`latitude`);
END IF;
/* cleanup/delete reserved waypoint */
DELETE FROM `cache_waypoint_pool` WHERE `uuid`=NEW.`uuid`;
END;");
sql_dropTrigger('cachesBeforeUpdate');