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<?php |
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/* |
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* This file is part of the Veslo project <https://github.com/symfony-doge/veslo>. |
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* |
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* (C) 2019 Pavel Petrov <[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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* @license https://opensource.org/licenses/GPL-3.0 GPL-3.0 |
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*/ |
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declare(strict_types=1); |
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namespace Veslo\AppBundle\Http\Client; |
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use GuzzleHttp\ClientInterface; |
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use GuzzleHttp\Exception\ConnectException; |
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use HttpRuntimeException; |
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use Psr\Http\Message\RequestInterface; |
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use Symfony\Component\Console\ConsoleEvents; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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use Veslo\AppBundle\Event\Http\Client\ConnectFailedEvent; |
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use Veslo\AppBundle\Http\Proxy\Manager\Alfred; |
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use Veslo\AppBundle\Http\ProxyAwareClientInterface; |
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/** |
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* Http client that uses dynamic proxies and fake fingerprints to ensure requests stability |
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* |
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* Configured for using in console environment (using ConsoleEvents) |
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*/ |
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class Batman implements ClientInterface, ProxyAwareClientInterface |
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{ |
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/** |
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* Base http client implementation |
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* |
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* @var ClientInterface |
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*/ |
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private $httpClient; |
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/** |
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* Provides proxies for requests |
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* |
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* @var Alfred |
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*/ |
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private $proxyManager; |
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/** |
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* Dispatches a connect failed event to listeners |
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* |
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* @var EventDispatcherInterface|null |
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*/ |
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private $eventDispatcher; |
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/** |
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* Options for stable http client |
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* |
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* @var array |
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*/ |
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private $options; |
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/** |
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* Batman constructor. |
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* |
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* @param ClientInterface $httpClient Base http client implementation |
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* @param Alfred $proxyManager Provides proxies for requests |
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* @param array $options Options for stable http client |
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*/ |
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public function __construct(ClientInterface $httpClient, Alfred $proxyManager, array $options) |
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{ |
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$this->httpClient = $httpClient; |
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$this->proxyManager = $proxyManager; |
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$optionsResolver = new OptionsResolver(); |
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$optionsResolver->setDefaults( |
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[ |
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'proxy' => [ |
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'enabled' => false, |
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], |
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] |
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); |
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$this->options = $optionsResolver->resolve($options); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws HttpRuntimeException |
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*/ |
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public function send(RequestInterface $request, array $options = []) |
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{ |
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throw new HttpRuntimeException('Method is not supported.'); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws HttpRuntimeException |
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*/ |
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public function sendAsync(RequestInterface $request, array $options = []) |
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{ |
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throw new HttpRuntimeException('Method is not supported.'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function request($method, $uri, array $options = []) |
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{ |
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if ($this->isProxyEnabled()) { |
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$options = array_replace_recursive($options, $this->getProxyOptions()); |
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// TODO: log appended stability options at debug level. |
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} |
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// TODO: fingerprint faking. |
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try { |
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return $this->httpClient->request($method, $uri, $options); |
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} catch (ConnectException $e) { |
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$eventDispatcher = $this->eventDispatcher; |
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// we are "scheduled" to execute some health maintenance tasks on-the-fly during kernel's terminate stage. |
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// as an alternative, it could be implemented as a custom middleware for the HTTP client. |
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if ($eventDispatcher instanceof EventDispatcherInterface) { |
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$eventDispatcher->addListener( |
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ConsoleEvents::TERMINATE, |
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function () use ($eventDispatcher, $e) { |
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$connectFailedEvent = new ConnectFailedEvent($this, $e); |
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$eventDispatcher->dispatch(ConnectFailedEvent::NAME, $connectFailedEvent); |
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} |
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); |
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} |
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throw $e; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws HttpRuntimeException |
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*/ |
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public function requestAsync($method, $uri, array $options = []) |
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{ |
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throw new HttpRuntimeException('Method is not supported.'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getConfig($option = null) |
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{ |
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return $this->httpClient->getConfig($option); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isProxyEnabled(): bool |
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{ |
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return !! $this->options['proxy']['enabled']; |
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} |
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/** |
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* Sets an event dispatcher for processing a connect failed event |
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* |
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* @param EventDispatcherInterface $eventDispatcher |
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* |
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* @return void |
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*/ |
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public function setEventDispatcher(EventDispatcherInterface $eventDispatcher): void |
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{ |
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$this->eventDispatcher = $eventDispatcher; |
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} |
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/** |
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* Returns proxy-related options for http client |
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* |
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* @return array |
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*/ |
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private function getProxyOptions(): array |
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{ |
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$proxy = $this->proxyManager->getProxy(); |
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$options = ['proxy' => $proxy]; |
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return $options; |
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} |
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} |
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symfony-doge /
veslo
