65 lines
2.2 KiB
PHP

<?php
/*+**********************************************************************************
* The contents of this file are subject to the vtiger CRM Public License Version 1.0
* ("License"); You may not use this file except in compliance with the License
* The Original Code is: vtiger CRM Open Source
* The Initial Developer of the Original Code is vtiger.
* Portions created by vtiger are Copyright (C) vtiger.
* All Rights Reserved.
************************************************************************************/
/**
* Time based Queue of tasks ready for execution.
*
*/
class VTTaskQueue{
public function __construct($adb){
$this->adb = $adb;
}
/**
* Queue a task for execution.
*
* @param $taskId The id of the task to queue
* @param $entityId The id of the crm entity the task is assiciated with.
* @param $when The time after which the task should be executed. This is
* an optional value with a default value of 0.
*/
public function queueTask($taskId, $entityId, $when=0){
$adb = $this->adb;
$result = $adb->pquery("select * from com_vtiger_workflowtask_queue
where task_id=? and entity_id=?", array($taskId, $entityId));
if($adb->num_rows($result)==1){
return false;
}else{
$adb->pquery("insert into com_vtiger_workflowtask_queue (task_id, entity_id, do_after)
values (?,?,?)", array($taskId, $entityId, $when));
return true;
}
}
/**
* Get a list of taskId/entityId pairs ready for execution.
*
* The method fetches task id/entity id where the when timestamp
* is less than the current time when the method was called.
*
* @return A list of pairs of the form array(taskId, entityId)
*/
public function getReadyTasks(){
$adb = $this->adb;
$time = time();
$result = $adb->pquery("select task_id, entity_id from com_vtiger_workflowtask_queue where do_after<?", array($time));
$it = new SqlResultIterator($adb, $result);
$arr = array();
foreach($it as $row){
$arr[]=array($row->task_id, $row->entity_id);
}
$adb->pquery("delete from com_vtiger_workflowtask_queue where do_after<?", array($time));
return $arr;
}
}
?>