class.ilCronCheck.php

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<?php
/*
    +-----------------------------------------------------------------------------+
    | ILIAS open source                                                           |
    +-----------------------------------------------------------------------------+
    | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
    |                                                                             |
    | 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
    +-----------------------------------------------------------------------------+
*/


class ilCronCheck
{
    private $possible_tasks = array();
    private $default_tasks = array();
    
    public function __construct()
    {
        global $ilLog;

        $this->log = $ilLog;
        
        $this->initTasks();
    }
    
    public function start()
    {
        /* MOVED TO: ilCronManager::runActiveJobs();
        global $ilSetting;

        $ilSetting->set('last_cronjob_start_ts', time());
        */
        
        if ($_SERVER['argc'] > 4) {
            for ($i = 4; $i < $_SERVER['argc']; $i++) {
                $arg = $_SERVER['argv'][$i];
                
                if (!isset($this->possible_tasks[$arg])) {
                    throw new ilException('cron-task "' . $arg . '" is not defined');
                }
                
                $task = $this->possible_tasks[$arg];
                
                $this->runTask($task);
            }
        } else {
            foreach ($this->default_tasks as $task) {
                $task = $this->possible_tasks[$task];
            
                $this->runTask($task);
            }
        }
    }
    
    private function runTask($task)
    {
        global $ilLog;
        
        $classlocation = $task['location'] . '/classes';
        if (isset($task['sub_location']) && strlen($task['sub_location'])) {
            $classlocation .= '/' . $task['sub_location'];
        }
        $classfile .= $classlocation . '/class.' . $task['classname'] . '.php';

        $classname = $task['classname'];
        $method = $task['method'];

        $condition = $task['condition'];
        
        if (!file_exists($classfile)) {
            throw new ilException('class file "' . $classfile . '" does not exist');
        }
        
        require_once($classfile);
        
        if (!class_exists($classname)) {
            throw new ilException('class "' . $classname . '" does not exist');
        }
        
        if (!method_exists($classname, $method)) {
            throw new ilException('method "' . $classname . '::' . $method . '()" does not exist');
        }

        if ($condition) {
            $ilLog->write("CRON - starting task: " . $classname . "::" . $method);
            
            $task = new $classname;
            $task->$method();
            
            $ilLog->write("CRON - finished task: " . $classname . "::" . $method);
        } else {
            $ilLog->write("CRON - task condition failed: " . $classname . "::" . $method);
        }
    }
    
    private function initTasks()
    {
        global $ilSetting;

        $this->default_tasks = array(
                'ilCronValidator::check'
        );

        $this->possible_tasks = array(

                // Start System Check
                'ilCronValidator::check' => array(
                    'classname'         => 'ilCronValidator',
                    'method'            => 'check',
                    'location'          => 'cron',
                    'condition'         => ($ilSetting->get('systemcheck_cron') == 1)
                )
        );
    }
}