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vendor/symfony/mailer/Mailer.php

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+<?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\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;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+final class Mailer implements MailerInterface
+{
+    private TransportInterface $transport;
+    private ?MessageBusInterface $bus;
+    private ?EventDispatcherInterface $dispatcher;
+
+    public function __construct(TransportInterface $transport, ?MessageBusInterface $bus = null, ?EventDispatcherInterface $dispatcher = null)
+    {
+        $this->transport = $transport;
+        $this->bus = $bus;
+        $this->dispatcher = $dispatcher;
+    }
+
+    public function send(RawMessage $message, ?Envelope $envelope = null): void
+    {
+        if (null === $this->bus) {
+            $this->transport->send($message, $envelope);
+
+            return;
+        }
+
+        $stamps = [];
+        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);
+            $stamps = $event->getStamps();
+
+            if ($event->isRejected()) {
+                return;
+            }
+        }
+
+        try {
+            $this->bus->dispatch(new SendEmailMessage($message, $envelope), $stamps);
+        } catch (HandlerFailedException $e) {
+            foreach ($e->getWrappedExceptions() as $nested) {
+                if ($nested instanceof TransportExceptionInterface) {
+                    throw $nested;
+                }
+            }
+            throw $e;
+        }
+    }
+}