<?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\Transport;use Psr\EventDispatcher\EventDispatcherInterface;use Psr\Log\LoggerInterface;use Psr\Log\NullLogger;use Symfony\Component\EventDispatcher\Event;use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;use Symfony\Component\Mailer\Envelope;use Symfony\Component\Mailer\Event\MessageEvent;use Symfony\Component\Mailer\SentMessage;use Symfony\Component\Mime\Address;use Symfony\Component\Mime\RawMessage;use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as SymfonyEventDispatcherInterface;/** * @author Fabien Potencier <fabien@symfony.com> */abstract class AbstractTransport implements TransportInterface{ private $dispatcher; private $logger; private $rate = 0; private $lastSent = 0; public function __construct(EventDispatcherInterface $dispatcher = null, LoggerInterface $logger = null) { $this->dispatcher = class_exists(Event::class) && $dispatcher instanceof SymfonyEventDispatcherInterface ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher; $this->logger = $logger ?? new NullLogger(); } /** * Sets the maximum number of messages to send per second (0 to disable). * * @return $this */ public function setMaxPerSecond(float $rate): self { if (0 >= $rate) { $rate = 0; } $this->rate = $rate; $this->lastSent = 0; return $this; } public function send(RawMessage $message, Envelope $envelope = null): ?SentMessage { $message = clone $message; $envelope = null !== $envelope ? clone $envelope : Envelope::create($message); if (null !== $this->dispatcher) { $event = new MessageEvent($message, $envelope, (string) $this); $this->dispatcher->dispatch($event); $envelope = $event->getEnvelope(); } $message = new SentMessage($message, $envelope); $this->doSend($message); $this->checkThrottling(); return $message; } abstract protected function doSend(SentMessage $message): void; /** * @param Address[] $addresses * * @return string[] */ protected function stringifyAddresses(array $addresses): array { return array_map(function (Address $a) { return $a->toString(); }, $addresses); } protected function getLogger(): LoggerInterface { return $this->logger; } private function checkThrottling() { if (0 == $this->rate) { return; } $sleep = (1 / $this->rate) - (microtime(true) - $this->lastSent); if (0 < $sleep) { $this->logger->debug(sprintf('Email transport "%s" sleeps for %.2f seconds', __CLASS__, $sleep)); usleep($sleep * 1000000); } $this->lastSent = microtime(true); }}