108 lines
2.7 KiB
PHP
108 lines
2.7 KiB
PHP
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<?php
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/*
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High-availability failover Transport class from Swift Mailer.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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//@require 'Swift/Transport/LoadBalancedTransport.php';
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//@require 'Swift/Mime/Message.php';
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/**
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* Contains a list of redundant Transports so when one fails, the next is used.
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* @package Swift
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* @subpackage Transport
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* @author Chris Corbyn
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*/
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class Swift_Transport_FailoverTransport
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extends Swift_Transport_LoadBalancedTransport
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{
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/**
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* Registered transport curently used.
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* @var Swift_Transport
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* @access private
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*/
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private $_currentTransport;
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/**
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* Creates a new FailoverTransport.
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*/
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public function __construct()
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{
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parent::__construct();
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}
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/**
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* Send the given Message.
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* Recipient/sender data will be retreived from the Message API.
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* The return value is the number of recipients who were accepted for delivery.
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* @param Swift_Mime_Message $message
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* @param string[] &$failedRecipients to collect failures by-reference
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* @return int
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*/
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public function send(Swift_Mime_Message $message, &$failedRecipients = null)
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{
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$maxTransports = count($this->_transports);
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$sent = 0;
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for ($i = 0; $i < $maxTransports
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&& $transport = $this->_getNextTransport(); ++$i)
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{
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try
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{
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if (!$transport->isStarted())
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{
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$transport->start();
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}
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return $transport->send($message, $failedRecipients);
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}
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catch (Swift_TransportException $e)
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{
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$this->_killCurrentTransport();
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}
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}
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if (count($this->_transports) == 0)
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{
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throw new Swift_TransportException(
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'All Transports in FailoverTransport failed, or no Transports available'
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);
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}
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return $sent;
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}
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// -- Protected methods
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protected function _getNextTransport()
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{
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if (!isset($this->_currentTransport))
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{
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$this->_currentTransport = parent::_getNextTransport();
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}
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return $this->_currentTransport;
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}
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protected function _killCurrentTransport()
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{
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$this->_currentTransport = null;
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parent::_killCurrentTransport();
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}
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}
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