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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.
*/
/**
* Reduces network flooding when sending large amounts of mail.
*
* @author Chris Corbyn
*/
class Swift_Plugins_BandwidthMonitorPlugin implements Swift_Events_SendListener, Swift_Events_CommandListener, Swift_Events_ResponseListener, Swift_InputByteStream
{
/**
* The outgoing traffic counter.
*
* @var int
*/
private $_out = 0;
/**
* The incoming traffic counter.
*
* @var int
*/
private $_in = 0;
/** Bound byte streams */
private $_mirrors = array();
/**
* Not used.
*/
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)
{
$message = $evt->getMessage();
$message->toByteStream($this);
}
/**
* Invoked immediately following a command being sent.
*
* @param Swift_Events_CommandEvent $evt
*/
public function commandSent(Swift_Events_CommandEvent $evt)
{
$command = $evt->getCommand();
$this->_out += strlen($command);
}
/**
* Invoked immediately following a response coming back.
*
* @param Swift_Events_ResponseEvent $evt
*/
public function responseReceived(Swift_Events_ResponseEvent $evt)
{
$response = $evt->getResponse();
$this->_in += strlen($response);
}
/**
* Called when a message is sent so that the outgoing counter can be increased.
*
* @param string $bytes
*/
public function write($bytes)
{
$this->_out += strlen($bytes);
foreach ($this->_mirrors as $stream) {
$stream->write($bytes);
}
}
/**
* Not used.
*/
public function commit()
{
}
/**
* Attach $is to this stream.
*
* The stream acts as an observer, receiving all data that is written.
* All {@link write()} and {@link flushBuffers()} operations will be mirrored.
*
* @param Swift_InputByteStream $is
*/
public function bind(Swift_InputByteStream $is)
{
$this->_mirrors[] = $is;
}
/**
* Remove an already bound stream.
*
* If $is is not bound, no errors will be raised.
* If the stream currently has any buffered data it will be written to $is
* before unbinding occurs.
*
* @param Swift_InputByteStream $is
*/
public function unbind(Swift_InputByteStream $is)
{
foreach ($this->_mirrors as $k => $stream) {
if ($is === $stream) {
unset($this->_mirrors[$k]);
}
}
}
/**
* Not used.
*/
public function flushBuffers()
{
foreach ($this->_mirrors as $stream) {
$stream->flushBuffers();
}
}
/**
* Get the total number of bytes sent to the server.
*
* @return int
*/
public function getBytesOut()
{
return $this->_out;
}
/**
* Get the total number of bytes received from the server.
*
* @return int
*/
public function getBytesIn()
{
return $this->_in;
}
/**
* Reset the internal counters to zero.
*/
public function reset()
{
$this->_out = 0;
$this->_in = 0;
}
}
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