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<?php |
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namespace League\JsonReference; |
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use Closure; |
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use League\JsonReference\Loader\CachedLoader; |
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use Psr\SimpleCache\CacheInterface; |
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final class CachedDereferencer implements DereferencerInterface |
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{ |
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/** |
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* @var Dereferencer |
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*/ |
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private $dereferencer; |
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/** |
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* @var CacheInterface |
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*/ |
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private $cache; |
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/** |
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* @param Dereferencer $dereferencer |
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* @param CacheInterface $cache |
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* @param bool $cacheLoaders |
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*/ |
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public function __construct(Dereferencer $dereferencer, CacheInterface $cache, $cacheLoaders = true) |
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{ |
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$this->dereferencer = $dereferencer; |
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$this->cache = $cache; |
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if ($cacheLoaders) { |
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$this->cacheLoaders(); |
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} |
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Reference::setDereferencerInstance($this); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function dereference($schema, $uri = '') |
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{ |
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$key = self::key($schema, $uri); |
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return $this->remember($key, function () use ($schema, $uri) { |
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return $this->dereferencer->dereference($schema, $uri); |
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}); |
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} |
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/** |
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* @param string $key |
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* @param Closure $callback |
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* |
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* @return object |
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*/ |
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private function remember($key, Closure $callback) |
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{ |
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$value = $this->cache->get($key); |
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if ($value !== null) { |
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return $value; |
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} |
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$this->cache->set($key, $value = $callback()); |
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return $value; |
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} |
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/** |
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* @param string|object $schema |
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* @param string $uri |
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* |
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* @return string |
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*/ |
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private static function key($schema, $uri) |
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{ |
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if ($uri !== '') { |
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return sha1($uri); |
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} |
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return sha1(is_string($schema) ? $schema : json_encode($schema)); |
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} |
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/** |
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* @return void |
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*/ |
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private function cacheLoaders() |
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{ |
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$loaderManager = $this->dereferencer->getLoaderManager(); |
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foreach ($loaderManager->getLoaders() as $prefix => $loader) { |
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$loaderManager->registerLoader($prefix, new CachedLoader($this->cache, $loader)); |
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} |
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} |
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public function getLoaderManager() |
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{ |
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return $this->dereferencer->getLoaderManager(); |
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} |
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public function getScopeResolver() |
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{ |
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return $this->dereferencer->getScopeResolver(); |
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} |
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public function getReferenceSerializer() |
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{ |
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return $this->dereferencer->getReferenceSerializer(); |
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} |
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} |
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thephpleague /
json-reference
