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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** 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; either version 2 of the License, or
** (at your option) any later version.
**
** 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/**
* Class to perform low level trigger prototype related actions.
*/
class CTriggerPrototypeManager {
/**
* Deletes trigger prototypes and related entities without permission check.
*
* @param array $triggerids
*/
public static function delete(array $triggerids) {
$del_triggerids = [];
// Selecting all inherited triggers.
$parent_triggerids = array_flip($triggerids);
do {
$db_triggers = DBselect(
'SELECT t.triggerid'.
' FROM triggers t'.
' WHERE '.dbConditionInt('t.templateid', array_keys($parent_triggerids))
);
$del_triggerids += $parent_triggerids;
$parent_triggerids = [];
while ($db_trigger = DBfetch($db_triggers)) {
if (!array_key_exists($db_trigger['triggerid'], $del_triggerids)) {
$parent_triggerids[$db_trigger['triggerid']] = true;
}
}
} while ($parent_triggerids);
$del_triggerids = array_keys($del_triggerids);
// Lock trigger prototypes before delete to prevent server from adding new LLD elements.
DBselect(
'SELECT NULL'.
' FROM triggers t'.
' WHERE '.dbConditionInt('t.triggerid', $del_triggerids).
' FOR UPDATE'
);
// Deleting discovered triggers.
$del_discovered_triggerids = DBfetchColumn(DBselect(
'SELECT td.triggerid'.
' FROM trigger_discovery td'.
' WHERE '.dbConditionInt('td.parent_triggerid', $del_triggerids)
), 'triggerid');
if ($del_discovered_triggerids) {
CTriggerManager::delete($del_discovered_triggerids);
}
DB::delete('trigger_depends', ['triggerid_down' => $del_triggerids]);
DB::delete('trigger_depends', ['triggerid_up' => $del_triggerids]);
DB::delete('trigger_tag', ['triggerid' => $del_triggerids]);
DB::delete('triggers', ['triggerid' => $del_triggerids]);
}
}
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