class.ilBackgroundTaskCronGarbageCollection.php

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<?php

/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once "Services/Cron/classes/class.ilCronJob.php";

class ilBackgroundTaskCronGarbageCollection extends ilCronJob
{
        public function getId()
        {
                return "bgtsk_gc";
        }
        
        public function getTitle()
        {
                global $lng;
                
                $lng->loadLanguageModule("bgtask");
                return $lng->txt("bgtask_cron_gc_title");
        }
        
        public function getDescription()
        {
                global $lng;
                
                $lng->loadLanguageModule("bgtask");
                return $lng->txt("bgtask_cron_gc_desc");
        }
        
        public function getDefaultScheduleType()
        {
                return self::SCHEDULE_TYPE_DAILY;
        }
        
        public function getDefaultScheduleValue()
        {
                return;
        }
        
        public function hasAutoActivation()
        {
                return false;
        }
        
        public function hasFlexibleSchedule()
        {
                return true;
        }

        public function run()
        {                               
                global $ilDB;
                
                $status = ilCronJobResult::STATUS_NO_ACTION;
                
                $cut = new ilDateTime(strtotime("-1day"), IL_CAL_UNIX);
                
                include_once "Services/BackgroundTask/classes/class.ilBackgroundTask.php";
        
                $set = $ilDB->query("SELECT id FROM ".ilBackgroundTask::DB_NAME.
                        " WHERE start_date <= ".$ilDB->quote($cut->get(IL_CAL_DATETIME), "text"));
                while($row = $ilDB->fetchAssoc($set))
                {
                        $status = ilCronJobResult::STATUS_OK;
                        
                        $task = new ilBackgroundTask($row["id"]);                       
                        $handler = $task->getHandlerInstance();
                        $handler->deleteTaskAndFiles();
                }
        
                $result = new ilCronJobResult();
                $result->setStatus($status);    
                
                return $result;
        }
}