137 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			PHP
		
	
	
			
		
		
	
	
			137 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			PHP
		
	
	
<?php
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/*
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 * This file is part of the Symfony package.
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 *
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 * (c) Fabien Potencier <fabien@symfony.com>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Symfony\Component\Mailer\Transport;
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use Psr\EventDispatcher\EventDispatcherInterface;
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use Psr\Log\LoggerInterface;
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use Psr\Log\NullLogger;
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use Symfony\Bridge\Twig\Mime\TemplatedEmail;
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use Symfony\Component\Mailer\Envelope;
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use Symfony\Component\Mailer\Event\FailedMessageEvent;
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use Symfony\Component\Mailer\Event\MessageEvent;
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use Symfony\Component\Mailer\Event\SentMessageEvent;
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use Symfony\Component\Mailer\Exception\LogicException;
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use Symfony\Component\Mailer\SentMessage;
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use Symfony\Component\Mime\Address;
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use Symfony\Component\Mime\BodyRendererInterface;
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use Symfony\Component\Mime\RawMessage;
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/**
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 * @author Fabien Potencier <fabien@symfony.com>
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 */
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abstract class AbstractTransport implements TransportInterface
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{
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    private ?EventDispatcherInterface $dispatcher;
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    private LoggerInterface $logger;
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    private float $rate = 0;
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    private float $lastSent = 0;
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    public function __construct(?EventDispatcherInterface $dispatcher = null, ?LoggerInterface $logger = null)
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    {
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        $this->dispatcher = $dispatcher;
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        $this->logger = $logger ?? new NullLogger();
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    }
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    /**
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     * Sets the maximum number of messages to send per second (0 to disable).
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     *
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     * @return $this
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     */
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    public function setMaxPerSecond(float $rate): static
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    {
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        if (0 >= $rate) {
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            $rate = 0;
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        }
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        $this->rate = $rate;
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        $this->lastSent = 0;
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        return $this;
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    }
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    public function send(RawMessage $message, ?Envelope $envelope = null): ?SentMessage
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    {
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        $message = clone $message;
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        $envelope = null !== $envelope ? clone $envelope : Envelope::create($message);
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        try {
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            if (!$this->dispatcher) {
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                $sentMessage = new SentMessage($message, $envelope);
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                $this->doSend($sentMessage);
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                return $sentMessage;
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            }
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            $event = new MessageEvent($message, $envelope, (string) $this);
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            $this->dispatcher->dispatch($event);
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            if ($event->isRejected()) {
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                return null;
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            }
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            $envelope = $event->getEnvelope();
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            $message = $event->getMessage();
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            if ($message instanceof TemplatedEmail && !$message->isRendered()) {
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                throw new LogicException(sprintf('You must configure a "%s" when a "%s" instance has a text or HTML template set.', BodyRendererInterface::class, get_debug_type($message)));
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            }
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            $sentMessage = new SentMessage($message, $envelope);
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            try {
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                $this->doSend($sentMessage);
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            } catch (\Throwable $error) {
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                $this->dispatcher->dispatch(new FailedMessageEvent($message, $error));
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                $this->checkThrottling();
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                throw $error;
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            }
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            $this->dispatcher->dispatch(new SentMessageEvent($sentMessage));
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            return $sentMessage;
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        } finally {
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            $this->checkThrottling();
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        }
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    }
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    abstract protected function doSend(SentMessage $message): void;
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    /**
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     * @param Address[] $addresses
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     *
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     * @return string[]
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     */
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    protected function stringifyAddresses(array $addresses): array
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    {
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        return array_map(fn (Address $a) => $a->toString(), $addresses);
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    }
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    protected function getLogger(): LoggerInterface
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    {
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        return $this->logger;
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    }
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    private function checkThrottling(): void
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    {
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        if (0 == $this->rate) {
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            return;
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        }
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        $sleep = (1 / $this->rate) - (microtime(true) - $this->lastSent);
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        if (0 < $sleep) {
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            $this->logger->debug(sprintf('Email transport "%s" sleeps for %.2f seconds', __CLASS__, $sleep));
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            usleep((int) ($sleep * 1000000));
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        }
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        $this->lastSent = microtime(true);
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    }
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}
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