Merged in feature_upgrade_and_rss (pull request #37)

RSS significant performance optimizations.
This commit is contained in:
Alexey Eschenko 2020-04-04 00:25:14 +00:00
commit 2da6fedc4f

View file

@ -6,9 +6,7 @@ namespace App\Feed;
use App\Magnet\MagnetGenerator;
use App\Magnetico\Entity\Torrent;
use App\Magnetico\Repository\TorrentRepository;
use App\Pager\PagelessDoctrineORMAdapter;
use Doctrine\ORM\QueryBuilder;
use Pagerfanta\Pagerfanta;
use Suin\RSSWriter\{Channel, Feed, Item};
use Symfony\Component\Routing\{Generator\UrlGeneratorInterface, RouterInterface};
@ -35,20 +33,19 @@ class RssGenerator
public function generateLast(int $page): string
{
$qb = $this->createLastTorrentsQueryBuilder();
$pager = new Pagerfanta(new PagelessDoctrineORMAdapter($qb));
$pager
->setAllowOutOfRangePages(true)
->setCurrentPage($page)
->setMaxPerPage(self::PER_PAGE)
;
$qb = $this->createLastTorrentsQueryBuilder(self::PER_PAGE, $page * self::PER_PAGE);
$feed = $this->createFeedFromTorrents($pager->getCurrentPageResults());
$feed = $this->createFeedFromTorrents($qb->getQuery()->getResult());
return $feed->render();
}
private function createFeedFromTorrents(\Traversable $torrents): Feed
/**
* @param Torrent[] $torrents
*
* @return Feed
*/
private function createFeedFromTorrents(array $torrents): Feed
{
$feed = new Feed();
$channel = $this->createChannel();
@ -83,11 +80,11 @@ class RssGenerator
}
/**
* @param Torrent[]|\Traversable $torrents
* @param Torrent[] $torrents
*
* @return Item[]
*/
private function createItemsFromTorrents(\Traversable $torrents): array
private function createItemsFromTorrents(array $torrents): array
{
$items = [];
@ -116,12 +113,15 @@ class RssGenerator
return $item;
}
private function createLastTorrentsQueryBuilder(): QueryBuilder
private function createLastTorrentsQueryBuilder(int $limit = self::PER_PAGE, int $offset = 0): QueryBuilder
{
$qb = $this->repo->createQueryBuilder('t');
$qb
->select('t')
->orderBy('t.id', 'DESC');
->orderBy('t.id', 'DESC')
->setMaxResults($limit)
->setFirstResult($offset)
;
return $qb;
}