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<?php |
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declare(strict_types=1); |
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/** |
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* @copyright Copyright (c) 2022 Julius Härtl <[email protected]> |
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* |
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* @author Julius Härtl <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace OC\Collaboration\Reference; |
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use OC\AppFramework\Bootstrap\Coordinator; |
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use OC\Collaboration\Reference\File\FileReferenceProvider; |
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use OCP\Collaboration\Reference\IReference; |
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use OCP\Collaboration\Reference\IReferenceManager; |
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use OCP\Collaboration\Reference\IReferenceProvider; |
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use OCP\ICache; |
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use OCP\ICacheFactory; |
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use OCP\IURLGenerator; |
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use Psr\Container\ContainerInterface; |
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use Psr\Log\LoggerInterface; |
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use Throwable; |
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class ReferenceManager implements IReferenceManager { |
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public const CACHE_TTL = 3600; |
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/** @var IReferenceProvider[]|null */ |
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private ?array $providers = null; |
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private ICache $cache; |
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private Coordinator $coordinator; |
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private ContainerInterface $container; |
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private LinkReferenceProvider $linkReferenceProvider; |
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private LoggerInterface $logger; |
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public function __construct(LinkReferenceProvider $linkReferenceProvider, ICacheFactory $cacheFactory, Coordinator $coordinator, ContainerInterface $container, LoggerInterface $logger) { |
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$this->linkReferenceProvider = $linkReferenceProvider; |
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$this->cache = $cacheFactory->createDistributed('reference'); |
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$this->coordinator = $coordinator; |
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$this->container = $container; |
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$this->logger = $logger; |
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} |
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public function extractReferences(string $text): array { |
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preg_match_all(IURLGenerator::URL_REGEX, $text, $matches); |
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$references = $matches[0] ?? []; |
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return array_map(function ($reference) { |
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return trim($reference); |
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}, $references); |
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} |
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public function getReferenceFromCache(string $referenceId): ?IReference { |
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$matchedProvider = $this->getMatchedProvider($referenceId); |
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if ($matchedProvider === null) { |
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return null; |
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} |
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$cacheKey = $this->getFullCacheKey($matchedProvider, $referenceId); |
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return $this->getReferenceByCacheKey($cacheKey); |
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} |
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public function getReferenceByCacheKey(string $cacheKey): ?IReference { |
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$cached = $this->cache->get($cacheKey); |
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if ($cached) { |
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return Reference::fromCache($cached); |
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} |
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return null; |
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} |
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public function resolveReference(string $referenceId): ?IReference { |
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$matchedProvider = $this->getMatchedProvider($referenceId); |
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if ($matchedProvider === null) { |
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return null; |
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} |
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$cacheKey = $this->getFullCacheKey($matchedProvider, $referenceId); |
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$cached = $this->cache->get($cacheKey); |
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if ($cached) { |
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return Reference::fromCache($cached); |
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} |
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$reference = $matchedProvider->resolveReference($referenceId); |
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if ($reference) { |
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$this->cache->set($cacheKey, Reference::toCache($reference), self::CACHE_TTL); |
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return $reference; |
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} |
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return null; |
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} |
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private function getMatchedProvider(string $referenceId): ?IReferenceProvider { |
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$matchedProvider = null; |
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foreach ($this->getProviders() as $provider) { |
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$matchedProvider = $provider->matchReference($referenceId) ? $provider : null; |
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if ($matchedProvider !== null) { |
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break; |
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} |
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} |
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if ($matchedProvider === null && $this->linkReferenceProvider->matchReference($referenceId)) { |
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$matchedProvider = $this->linkReferenceProvider; |
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} |
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return $matchedProvider; |
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} |
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private function getFullCacheKey(IReferenceProvider $provider, string $referenceId): string { |
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$cacheKey = $provider->getCacheKey($referenceId); |
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return md5($provider->getCachePrefix($referenceId)) . ( |
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$cacheKey !== null ? ('-' . md5($cacheKey)) : '' |
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); |
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} |
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public function invalidateCache(string $cachePrefix, ?string $cacheKey = null): void { |
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if ($cacheKey === null) { |
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$this->cache->clear(md5($cachePrefix)); |
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return; |
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} |
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$this->cache->remove(md5($cachePrefix) . '-' . md5($cacheKey)); |
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} |
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/** |
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* @return IReferenceProvider[] |
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*/ |
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public function getProviders(): array { |
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if ($this->providers === null) { |
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$context = $this->coordinator->getRegistrationContext(); |
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if ($context === null) { |
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return []; |
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} |
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$this->providers = array_filter(array_map(function ($registration): ?IReferenceProvider { |
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try { |
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/** @var IReferenceProvider $provider */ |
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$provider = $this->container->get($registration->getService()); |
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} catch (Throwable $e) { |
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$this->logger->error('Could not load reference provider ' . $registration->getService() . ': ' . $e->getMessage(), [ |
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'exception' => $e, |
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]); |
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return null; |
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} |
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return $provider; |
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}, $context->getReferenceProviders())); |
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$this->providers[] = $this->container->get(FileReferenceProvider::class); |
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} |
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return $this->providers; |
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} |
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} |
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nextcloud /
server
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