/** * Creates and persists a unique shortcode generated for provided url * * @param UriInterface $url * @param string[] $tags * @return string * @throws InvalidUrlException * @throws RuntimeException */ public function urlToShortCode(UriInterface $url, array $tags = []) { // If the url already exists in the database, just return its short code $shortUrl = $this->em->getRepository(ShortUrl::class)->findOneBy(['originalUrl' => $url]); if (isset($shortUrl)) { return $shortUrl->getShortCode(); } // Check that the URL exists $this->checkUrlExists($url); // Transactionally insert the short url, then generate the short code and finally update the short code try { $this->em->beginTransaction(); // First, create the short URL with an empty short code $shortUrl = new ShortUrl(); $shortUrl->setOriginalUrl($url); $this->em->persist($shortUrl); $this->em->flush(); // Generate the short code and persist it $shortCode = $this->convertAutoincrementIdToShortCode($shortUrl->getId()); $shortUrl->setShortCode($shortCode)->setTags($this->tagNamesToEntities($this->em, $tags)); $this->em->flush(); $this->em->commit(); return $shortCode; } catch (ORMException $e) { if ($this->em->getConnection()->isTransactionActive()) { $this->em->rollback(); $this->em->close(); } throw new RuntimeException('An error occurred while persisting the short URL', -1, $e); } }