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<?php
/*
* This file is part of SwiftMailer.
* (c) 2004-2009 Chris Corbyn
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
//@require 'Swift/Events/SendListener.php';
//@require 'Swift/Events/SendEvent.php';
//@require 'Swift/Plugins/Sleeper.php';
/**
* Reduces network flooding when sending large amounts of mail.
* @package Swift
* @subpackage Plugins
* @author Chris Corbyn
*/
class Swift_Plugins_AntiFloodPlugin
implements Swift_Events_SendListener, Swift_Plugins_Sleeper
{
/**
* The number of emails to send before restarting Transport.
* @var int
* @access private
*/
private $_threshold;
/**
* The number of seconds to sleep for during a restart.
* @var int
* @access private
*/
private $_sleep;
/**
* The internal counter.
* @var int
* @access private
*/
private $_counter = 0;
/**
* The Sleeper instance for sleeping.
* @var Swift_Plugins_Sleeper
* @access private
*/
private $_sleeper;
/**
* Create a new AntiFloodPlugin with $threshold and $sleep time.
* @param int $threshold
* @param int $sleep time
* @param Swift_Plugins_Sleeper $sleeper (not needed really)
*/
public function __construct($threshold = 99, $sleep = 0,
Swift_Plugins_Sleeper $sleeper = null)
{
$this->setThreshold($threshold);
$this->setSleepTime($sleep);
$this->_sleeper = $sleeper;
}
/**
* Set the number of emails to send before restarting.
* @param int $threshold
*/
public function setThreshold($threshold)
{
$this->_threshold = $threshold;
}
/**
* Get the number of emails to send before restarting.
* @return int
*/
public function getThreshold()
{
return $this->_threshold;
}
/**
* Set the number of seconds to sleep for during a restart.
* @param int $sleep time
*/
public function setSleepTime($sleep)
{
$this->_sleep = $sleep;
}
/**
* Get the number of seconds to sleep for during a restart.
* @return int
*/
public function getSleepTime()
{
return $this->_sleep;
}
/**
* Invoked immediately before the Message is sent.
* @param Swift_Events_SendEvent $evt
*/
public function beforeSendPerformed(Swift_Events_SendEvent $evt)
{
}
/**
* Invoked immediately after the Message is sent.
* @param Swift_Events_SendEvent $evt
*/
public function sendPerformed(Swift_Events_SendEvent $evt)
{
++$this->_counter;
if ($this->_counter >= $this->_threshold)
{
$transport = $evt->getTransport();
$transport->stop();
if ($this->_sleep)
{
$this->sleep($this->_sleep);
}
$transport->start();
$this->_counter = 0;
}
}
/**
* Sleep for $seconds.
* @param int $seconds
*/
public function sleep($seconds)
{
if (isset($this->_sleeper))
{
$this->_sleeper->sleep($seconds);
}
else
{
sleep($seconds);
}
}
}
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