Symfony Profiler

<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Mailer;
use Psr\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\EventDispatcher\Event;
use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
use Symfony\Component\Mailer\Event\MessageEvent;
use Symfony\Component\Mailer\Exception\TransportExceptionInterface;
use Symfony\Component\Mailer\Messenger\SendEmailMessage;
use Symfony\Component\Mailer\Transport\TransportInterface;
use Symfony\Component\Messenger\Exception\HandlerFailedException;
use Symfony\Component\Messenger\MessageBusInterface;
use Symfony\Component\Mime\RawMessage;
use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as SymfonyEventDispatcherInterface;
/**
* @author Fabien Potencier <fabien@symfony.com>
*/
final class Mailer implements MailerInterface
{
private $transport;
private $bus;
private $dispatcher;
public function __construct(TransportInterface $transport, MessageBusInterface $bus = null, EventDispatcherInterface $dispatcher = null)
{
$this->transport = $transport;
$this->bus = $bus;
$this->dispatcher = class_exists(Event::class) && $dispatcher instanceof SymfonyEventDispatcherInterface ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher;
}
public function send(RawMessage $message, Envelope $envelope = null): void
{
if (null === $this->bus) {
$this->transport->send($message, $envelope);
return;
}
if (null !== $this->dispatcher) {
// The dispatched event here has `queued` set to `true`; the goal is NOT to render the message, but to let
// listeners do something before a message is sent to the queue.
// We are using a cloned message as we still want to dispatch the **original** message, not the one modified by listeners.
// That's because the listeners will run again when the email is sent via Messenger by the transport (see `AbstractTransport`).
// Listeners should act depending on the `$queued` argument of the `MessageEvent` instance.
$clonedMessage = clone $message;
$clonedEnvelope = null !== $envelope ? clone $envelope : Envelope::create($clonedMessage);
$event = new MessageEvent($clonedMessage, $clonedEnvelope, (string) $this->transport, true);
$this->dispatcher->dispatch($event);
}
try {
$this->bus->dispatch(new SendEmailMessage($message, $envelope));
} catch (HandlerFailedException $e) {
foreach ($e->getNestedExceptions() as $nested) {
if ($nested instanceof TransportExceptionInterface) {
throw $nested;
}
}
throw $e;
}
}
}

vendor/symfony/mailer/Mailer.php line 42