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<?php |
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namespace Http\Client\Plugin\Vcr; |
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use Http\Client\Plugin\Plugin; |
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use Http\Client\Plugin\Vcr\Exception\CannotBeReplayed; |
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use Http\Client\Plugin\Vcr\Exception\NotFound; |
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use Http\Promise\FulfilledPromise; |
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use Http\Promise\RejectedPromise; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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class VcrPlugin implements Plugin |
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{ |
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const HEADER_VCR = 'X-VCR'; |
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const HEADER_VCR_REPLAY = 'replay'; |
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const HEADER_VCR_RECORDED = 'recorded'; |
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/** |
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* @var Vcr |
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*/ |
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private $vcr; |
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public function __construct(Vcr $vcr) |
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{ |
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$this->vcr = $vcr; |
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} |
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public function handleRequest(RequestInterface $request, callable $next, callable $first) |
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{ |
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try { |
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return $this->replay($request); |
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} catch (CannotBeReplayed $e) { |
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$this->record($request); |
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} |
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return $next($request)->then($this->onFulfilled($request), $this->onRejected($request)); |
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} |
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private function replay(RequestInterface $request) |
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{ |
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if (!$this->vcr->isTurnedOn() || !$this->vcr->hasTape()) { |
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throw new CannotBeReplayed(); |
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} |
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$tape = $this->vcr->getTape(); |
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try { |
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$track = $tape->findTrackByRequest($request); |
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} catch (NotFound $e) { |
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throw new CannotBeReplayed(); |
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} |
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if ($track->hasException()) { |
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return new RejectedPromise($track->getException()); |
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} |
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if ($track->hasResponse()) { |
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$response = $track->getResponse()->withAddedHeader(self::HEADER_VCR, self::HEADER_VCR_REPLAY); |
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return new FulfilledPromise($response); |
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} |
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throw new CannotBeReplayed(); |
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} |
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private function record(RequestInterface $request) |
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{ |
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if (!$this->vcr->isTurnedOn() || !$this->vcr->hasTape()) { |
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return; |
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} |
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$tape = $this->vcr->getTape(); |
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$tape->addTrack(Track::create($request)); |
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} |
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private function onFulfilled(RequestInterface $request) |
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{ |
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$vcr = $this->vcr; |
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return function (ResponseInterface $response) use ($vcr, $request) { |
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if ($vcr->isTurnedOn() && $vcr->isRecording()) { |
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$tape = $vcr->getTape(); |
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try { |
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$track = $tape->findTrackByRequest($request); |
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} catch (NotFound $e) { |
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// The track should have been added already when the request was handled initially, |
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// but who knows what weird stuff you are doing :) |
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$track = Track::create($request); |
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$tape->addTrack($track); |
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} |
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$track->setResponse($response); |
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$response = $response->withAddedHeader(self::HEADER_VCR, self::HEADER_VCR_RECORDED); |
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} |
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return $response; |
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}; |
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} |
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private function onRejected(RequestInterface $request) |
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{ |
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$vcr = $this->vcr; |
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return function (\Exception $e) use ($vcr, $request) { |
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if ($vcr->isTurnedOn() && $vcr->isRecording()) { |
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$tape = $vcr->getTape(); |
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try { |
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$track = $tape->findTrackByRequest($request); |
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} catch (NotFound $notFound) { |
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// The track should have been added already when the request was handled initially, |
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// but who knows what weird stuff you are doing :) |
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$track = Track::create($request); |
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$tape->addTrack($track); |
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} |
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$track->setException($e); |
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} |
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return $e; |
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}; |
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} |
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} |
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php-http /
vcr-plugin
