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<?php |
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namespace Digia\Lumen\GraphQL; |
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use Digia\Lumen\GraphQL\Contracts\TypeResolverInterface; |
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use Youshido\GraphQL\Execution\Processor; |
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use Illuminate\Cache\Repository as CacheRepository; |
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use Illuminate\Contracts\Filesystem\FileNotFoundException; |
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class GraphQLService |
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{ |
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/** |
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* The cache key used when caching processor instances |
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*/ |
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const PROCESSOR_CACHE_KEY = 'graphql_processor'; |
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/** |
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* Path to graphql introspection file |
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*/ |
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const INTROSPECTION_QUERY_PATH = 'graphql/Introspection.graphql'; |
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/** |
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* @var Processor |
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*/ |
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private $processor; |
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/** |
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* @var TypeResolverInterface |
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*/ |
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private $typeResolver; |
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/** |
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* @var CacheRepository |
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*/ |
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private $cacheRepository; |
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/** |
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* GraphQLController constructor. |
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* |
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* @param Processor $processor |
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*/ |
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public function __construct(Processor $processor, CacheRepository $cacheRepository) |
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{ |
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$this->processor = $processor; |
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$this->cacheRepository = $cacheRepository; |
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} |
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/** |
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* Processor instantiation takes a while so we cache the instance forever. The processor cache can be cleared by |
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* running "php artisan graphql:clear:processor:cache". |
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* |
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* @return Processor |
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*/ |
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public function getProcessor() |
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{ |
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$processor = $this->cacheRepository->get(self::PROCESSOR_CACHE_KEY); |
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if ($processor === null) { |
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$processor = $this->processor; |
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$this->cacheRepository->forever(self::PROCESSOR_CACHE_KEY, $processor); |
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} |
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return $processor; |
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} |
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/** |
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* Removes the currently cached processor instance, if any |
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*/ |
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public function forgetProcessor() |
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{ |
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$this->cacheRepository->forget(self::PROCESSOR_CACHE_KEY); |
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} |
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/** |
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* @return array |
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*/ |
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public function getIntrospectionQueryResponse(): array |
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{ |
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return $this->getProcessor()->processPayload($this->getIntrospectionQuery())->getResponseData(); |
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} |
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/** |
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* @return string |
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* |
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* @throws FileNotFoundException |
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*/ |
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private function getIntrospectionQuery(): string |
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{ |
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$path = resource_path(self::INTROSPECTION_QUERY_PATH); |
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if (!file_exists($path)) { |
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throw new FileNotFoundException('Could not find introspection query file'); |
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} |
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return file_get_contents($path); |
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} |
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} |
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digiaonline /
lumen-graphql
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