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<?php |
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namespace PubPeerFoundation\PublicationDataExtractor; |
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use Generator; |
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use GuzzleHttp\Promise\EachPromise; |
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use Psr\Http\Message\ResponseInterface; |
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use GuzzleHttp\Exception\RequestException; |
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use GrahamCampbell\GuzzleFactory\GuzzleFactory; |
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use PubPeerFoundation\PublicationDataExtractor\Resources\Resource; |
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use PubPeerFoundation\PublicationDataExtractor\Helpers\ClassHelper; |
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use PubPeerFoundation\PublicationDataExtractor\Identifiers\Identifier; |
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class ApiDataFetcher |
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{ |
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protected $identifier; |
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protected $client; |
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protected $resources = []; |
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public $apiData; |
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protected $errors = []; |
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public function __construct(Identifier $identifier) |
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{ |
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$this->identifier = $identifier; |
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$this->client = GuzzleFactory::make(compact('headers'), 100); |
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} |
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/** |
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* Fetch data from API calls promises. |
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*/ |
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public function fetch(): void |
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{ |
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(new EachPromise($this->getPromises(), [ |
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'concurrency' => 3, |
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'fulfilled' => function (ResponseInterface $response, $index) { |
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$this->apiData[] = $this->getResourceAtIndex($index) |
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->getDataFrom((string) $response->getBody()); |
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}, |
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'rejected' => function (RequestException $exception, $index) { |
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$resourceName = ClassHelper::get_class_name($this->getResourceAtIndex($index)); |
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$this->errors[$resourceName] = $exception->getCode(); |
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}, |
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]))->promise()->wait(); |
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} |
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/** |
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* Get list of API calls promises. |
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* |
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* @return Generator |
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*/ |
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protected function getPromises(): Generator |
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{ |
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foreach ($this->identifier->getRelatedResources() as $resourceClass) { |
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$resource = $this->instantiateResource($resourceClass); |
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$promise = $this->client->requestAsync( |
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'GET', |
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$resource->getApiUrl(), |
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$resource->getRequestOptions() |
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); |
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yield $promise; |
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} |
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} |
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public function getData(): array |
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{ |
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return array_values( |
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array_filter($this->apiData) |
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); |
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} |
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public function getErrors(): array |
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{ |
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return $this->errors; |
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} |
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/** |
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* Get resource instance from resources array. |
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* |
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* @param int $index |
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* |
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* @return resource |
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*/ |
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protected function getResourceAtIndex(int $index): Resource |
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{ |
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return $this->resources[$index]; |
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} |
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/** |
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* Create and store an instance of the Resource class. |
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* |
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* @param string $resourceClass |
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* |
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* @return resource |
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*/ |
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protected function instantiateResource($resourceClass): Resource |
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{ |
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return $this->resources[] = new $resourceClass($this->identifier); |
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} |
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} |
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PubPeerFoundation /
PublicationDataExtractor
