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authorYuchen Pei <hi@ypei.me>2021-10-15 09:52:00 +1100
committerYuchen Pei <hi@ypei.me>2021-10-15 09:52:00 +1100
commit71b0e901f5fb1cfcd162d8acc23120d3f77a3152 (patch)
tree323c00faef1edc7dea2e88ff581cc2258b2b6432 /External/swiftmailer/lib/classes/Swift/Transport/LoadBalancedTransport.php
parent72cce24864b064b5762f4fe97fdf40d8d2ad4b51 (diff)
parent07f5140771388c9e0c8a99b0dd2e5d950bdb173b (diff)
Merge branch 'development' into h-node
Diffstat (limited to 'External/swiftmailer/lib/classes/Swift/Transport/LoadBalancedTransport.php')
-rwxr-xr-xExternal/swiftmailer/lib/classes/Swift/Transport/LoadBalancedTransport.php188
1 files changed, 188 insertions, 0 deletions
diff --git a/External/swiftmailer/lib/classes/Swift/Transport/LoadBalancedTransport.php b/External/swiftmailer/lib/classes/Swift/Transport/LoadBalancedTransport.php
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+++ b/External/swiftmailer/lib/classes/Swift/Transport/LoadBalancedTransport.php
@@ -0,0 +1,188 @@
+<?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/Transport.php';
+//@require 'Swift/Mime/Message.php';
+//@require 'Swift/Events/EventListener.php';
+
+/**
+ * Redudantly and rotationally uses several Transports when sending.
+ *
+ * @package Swift
+ * @subpackage Transport
+ * @author Chris Corbyn
+ */
+class Swift_Transport_LoadBalancedTransport implements Swift_Transport
+{
+
+ /** Transports which are deemed useless */
+ private $_deadTransports = array();
+
+ /**
+ * The Transports which are used in rotation.
+ *
+ * @var array Swift_Transport
+ * @access protected
+ */
+ protected $_transports = array();
+
+ /**
+ * Creates a new LoadBalancedTransport.
+ */
+ public function __construct()
+ {
+ }
+
+ /**
+ * Set $transports to delegate to.
+ *
+ * @param array $transports Swift_Transport
+ */
+ public function setTransports(array $transports)
+ {
+ $this->_transports = $transports;
+ $this->_deadTransports = array();
+ }
+
+ /**
+ * Get $transports to delegate to.
+ *
+ * @return array Swift_Transport
+ */
+ public function getTransports(array $transports)
+ {
+ return array_merge($this->_transports, $this->_deadTransports);
+ }
+
+ /**
+ * Test if this Transport mechanism has started.
+ *
+ * @return boolean
+ */
+ public function isStarted()
+ {
+ return count($this->_transports) > 0;
+ }
+
+ /**
+ * Start this Transport mechanism.
+ */
+ public function start()
+ {
+ $this->_transports = array_merge($this->_transports, $this->_deadTransports);
+ }
+
+ /**
+ * Stop this Transport mechanism.
+ */
+ public function stop()
+ {
+ foreach ($this->_transports as $transport)
+ {
+ $transport->stop();
+ }
+ }
+
+ /**
+ * Send the given Message.
+ *
+ * Recipient/sender data will be retreived from the Message API.
+ * The return value is the number of recipients who were accepted for delivery.
+ *
+ * @param Swift_Mime_Message $message
+ * @param string[] &$failedRecipients to collect failures by-reference
+ * @return int
+ */
+ public function send(Swift_Mime_Message $message, &$failedRecipients = null)
+ {
+ $maxTransports = count($this->_transports);
+ $sent = 0;
+
+ for ($i = 0; $i < $maxTransports
+ && $transport = $this->_getNextTransport(); ++$i)
+ {
+ try
+ {
+ if (!$transport->isStarted())
+ {
+ $transport->start();
+ }
+ if ($sent = $transport->send($message, $failedRecipients))
+ {
+ break;
+ }
+ }
+ catch (Swift_TransportException $e)
+ {
+ $this->_killCurrentTransport();
+ }
+ }
+
+ if (count($this->_transports) == 0)
+ {
+ throw new Swift_TransportException(
+ 'All Transports in LoadBalancedTransport failed, or no Transports available'
+ );
+ }
+
+ return $sent;
+ }
+
+ /**
+ * Register a plugin.
+ *
+ * @param Swift_Events_EventListener $plugin
+ */
+ public function registerPlugin(Swift_Events_EventListener $plugin)
+ {
+ foreach ($this->_transports as $transport)
+ {
+ $transport->registerPlugin($plugin);
+ }
+ }
+
+ // -- Protected methods
+
+ /**
+ * Rotates the transport list around and returns the first instance.
+ *
+ * @return Swift_Transport
+ * @access protected
+ */
+ protected function _getNextTransport()
+ {
+ if ($next = array_shift($this->_transports))
+ {
+ $this->_transports[] = $next;
+ }
+ return $next;
+ }
+
+ /**
+ * Tag the currently used (top of stack) transport as dead/useless.
+ *
+ * @access protected
+ */
+ protected function _killCurrentTransport()
+ {
+ if ($transport = array_pop($this->_transports))
+ {
+ try
+ {
+ $transport->stop();
+ }
+ catch (Exception $e)
+ {
+ }
+ $this->_deadTransports[] = $transport;
+ }
+ }
+
+}