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<?php declare(strict_types=1); |
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/* |
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* This file is part of the feed-io package. |
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* |
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* (c) Alexandre Debril <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FeedIo\Adapter\Guzzle; |
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use FeedIo\Adapter\ClientInterface; |
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use FeedIo\Adapter\Guzzle\Async\ReaderInterface; |
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use FeedIo\Adapter\NotFoundException; |
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use FeedIo\Adapter\ResponseInterface; |
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use FeedIo\Adapter\ServerErrorException; |
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use FeedIo\Async\Request; |
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use \GuzzleHttp\Promise\PromiseInterface; |
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use GuzzleHttp\Exception\BadResponseException; |
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/** |
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* Guzzle dependent HTTP client |
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*/ |
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class Client implements ClientInterface |
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{ |
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/** |
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* Default user agent provided with the package |
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*/ |
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const DEFAULT_USER_AGENT = 'Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1'; |
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/** |
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* @var \GuzzleHttp\ClientInterface |
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*/ |
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protected $guzzleClient; |
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/** |
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* @var string |
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*/ |
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protected $userAgent; |
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/** |
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* @param \GuzzleHttp\ClientInterface $guzzleClient |
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* @param string $userAgent |
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*/ |
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public function __construct(\GuzzleHttp\ClientInterface $guzzleClient, string $userAgent = self::DEFAULT_USER_AGENT) |
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{ |
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$this->guzzleClient = $guzzleClient; |
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$this->userAgent = $userAgent; |
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} |
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/** |
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* @param string $userAgent The new user-agent |
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* @return Client |
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*/ |
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public function setUserAgent(string $userAgent) : Client |
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{ |
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$this->userAgent = $userAgent; |
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return $this; |
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} |
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/** |
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* @param string $url |
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* @param \DateTime $modifiedSince |
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* @return ResponseInterface |
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* @throws \GuzzleHttp\Exception\GuzzleException |
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*/ |
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public function getResponse(string $url, \DateTime $modifiedSince) : ResponseInterface |
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{ |
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try { |
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$options = $this->getOptions($modifiedSince); |
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return new Response($this->guzzleClient->request('get', $url, $options)); |
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} catch (BadResponseException $e) { |
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switch ((int) $e->getResponse()->getStatusCode()) { |
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case 404: |
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throw new NotFoundException($e->getMessage()); |
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default: |
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throw new ServerErrorException($e->getMessage()); |
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} |
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} |
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} |
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/** |
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* @param iterable $requests |
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* @param ReaderInterface $reader |
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* @return \Generator |
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*/ |
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public function getPromises(iterable $requests, ReaderInterface $reader) : \Generator |
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{ |
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foreach ($requests as $request) { |
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yield $this->getPromise($request, $reader); |
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} |
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} |
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/** |
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* @param Request $request |
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* @param ReaderInterface $reader |
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* @return PromiseInterface |
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*/ |
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protected function getPromise(Request $request, ReaderInterface $reader) : PromiseInterface |
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{ |
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$promise = $this->newPromise($request); |
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$promise->then(function ($psrResponse) use ($request, $reader) { |
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try { |
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$request->setResponse(new Response($psrResponse)); |
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$reader->handle($request); |
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} catch (\Exception $e) { |
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$reader->handleError($request, $e); |
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} |
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}, function ($error) use ($request, $reader) { |
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$reader->handleError($request, $error); |
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}); |
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return $promise; |
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} |
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/** |
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* @param Request $request |
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* @return PromiseInterface |
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*/ |
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protected function newPromise(Request $request) : PromiseInterface |
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{ |
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$options = $this->getOptions($request->getModifiedSince()); |
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return $this->guzzleClient->requestAsync('GET', $request->getUrl(), $options); |
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} |
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/** |
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* @param \DateTime $modifiedSince |
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* @return array |
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*/ |
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protected function getOptions(\DateTime $modifiedSince) : array |
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{ |
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return [ |
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'headers' => [ |
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'User-Agent' => $this->userAgent, |
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'If-Modified-Since' => $modifiedSince->format(\DateTime::RFC2822) |
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] |
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]; |
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} |
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} |
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alexdebril /
feed-io
