<?php

/**
 * Invision Power Services
 * IP.Board v3.0.1
 * Task: Simple task to clean out sleeping mysql queries
 * Last Updated: $LastChangedDate: 2009-04-02 04:31:59 -0400 (Thu, 02 Apr 2009) $
 *
 * @author 		$Author: matt $
 * @copyright	(c) 2001 - 2009 Invision Power Services, Inc.
 * @license		http://www.invisionpower.com/community/board/license.html
 * @package		Invision Power Board
 * @subpackage	Core
 * @link		http://www.invisionpower.com
 * @since		27th January 2004
 * @version		$Rev: 4390 $
 */

if ( ! defined( 'IN_IPB' ) )
{
	print "<h1>Incorrect access</h1>You cannot access this file directly. If you have recently upgraded, make sure you upgraded all the relevant files.";
	exit();
}

class task_item
{
	/**
	 * Parent task manager class
	 *
	 * @access	protected
	 * @var		object
	 */
	protected $class;

	/**
	 * This task data
	 *
	 * @access	protected
	 * @var		array
	 */
	protected $task			= array();

	/**
	 * Prevent logging
	 *
	 * @access	protected
	 * @var		boolean
	 */
	protected $restrict_log	= false;
	
	/**#@+
	 * Registry Object Shortcuts
	 *
	 * @access	protected
	 * @var		object
	 */
	protected $registry;
	protected $DB;
	protected $settings;
	protected $request;
	protected $lang;
	protected $member;
	protected $cache;
	/**#@-*/
	
	/**
	 * Constructor
	 *
	 * @access	public
	 * @param 	object		ipsRegistry reference
	 * @param 	object		Parent task class
	 * @param	array 		This task data
	 * @return	void
	 */
	public function __construct( ipsRegistry $registry, $class, $task )
	{
		/* Make registry objects */
		$this->registry	= $registry;
		$this->DB		= $this->registry->DB();
		$this->settings =& $this->registry->fetchSettings();
		$this->request  =& $this->registry->fetchRequest();
		$this->lang		= $this->registry->getClass('class_localization');
		$this->member	= $this->registry->member();
		$this->memberData =& $this->registry->member()->fetchMemberData();
		$this->cache	= $this->registry->cache();
		$this->caches   =& $this->registry->cache()->fetchCaches();

		$this->class	= $class;
		$this->task		= $task;
	}
	
	/**
	 * Run this task
	 *
	 * @access	public
	 * @return	void
	 */
	public function runTask()
	{
		$this->registry->getClass('class_localization')->loadLanguageFile( array( 'public_global' ), 'core' );
		
		//-----------------------------------------
		// This is mysql only
		//-----------------------------------------
		
		if ( strtolower( $this->settings['sql_driver'] ) != 'mysql' )
		{
			$this->class->unlockTask( $this->task );
			return;
		}
		
		//-----------------------------------------
		// Clean out sleeping mysql processes
		//-----------------------------------------

		$this->DB->return_die	= true;
		$resource	= $this->DB->query( "SHOW PROCESSLIST", true );
		
		while( $r = $this->DB->fetch($resource) )
		{
			//-----------------------------------------
			// Make sure we're only killing stuff on our db
			//-----------------------------------------
			
			if( $r['db'] == $this->settings['sql_database']
				AND $r['Command'] == 'Sleep' 
				AND $r['Time'] > 60 )
			{
				$this->DB->return_die	= true;
				$this->DB->query( "KILL {$r['Id']}" );
				
				/* Log */
				IPSDebug::addLogMessage( 'Task - MySQL Clean Up Performed. Killed id ' . $r['Id'], 'mysqlCleanUp', $r );
			}
		}
		
		$this->DB->return_die	= false;

		//-----------------------------------------
		// Log to log table - modify but dont delete
		//-----------------------------------------
		
		$this->class->appendTaskLog( $this->task, $this->lang->words['task_mysqlcleanup'] );
		
		//-----------------------------------------
		// Unlock Task: DO NOT MODIFY!
		//-----------------------------------------
		
		$this->class->unlockTask( $this->task );
	}

}