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<?php |
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namespace Dshafik\GuzzleHttp; |
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/** |
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* guzzlehttp-vcr middleware |
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* |
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* Records and automatically replays responses on subsequent requests |
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* for unit testing |
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* |
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* @package Dshafik\GuzzleHttp |
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*/ |
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class VcrHandler |
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{ |
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/** |
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* @var string |
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*/ |
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protected $cassette; |
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/** |
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* @param string $cassette fixture path |
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* @return \GuzzleHttp\HandlerStack |
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*/ |
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public static function turnOn($cassette) |
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{ |
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if (!file_exists($cassette)) { |
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$handler = \GuzzleHttp\HandlerStack::create(); |
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$handler->after('allow_redirects', new static($cassette), 'vcr_recorder'); |
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return $handler; |
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} else { |
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$responses = self::decodeResponses($cassette); |
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$queue = []; |
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$class = new \ReflectionClass(\GuzzleHttp\Psr7\Response::class); |
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foreach ($responses as $response) { |
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$queue[] = $class->newInstanceArgs($response); |
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} |
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return \GuzzleHttp\HandlerStack::create(new \GuzzleHttp\Handler\MockHandler($queue)); |
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} |
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} |
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/** |
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* Constructor |
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* |
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* @param string $cassette fixture path |
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*/ |
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protected function __construct($cassette) |
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{ |
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$this->cassette = $cassette; |
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} |
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/** |
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* Decodes every responses body from base64 |
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* |
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* @param $cassette |
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* @return array |
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*/ |
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protected static function decodeResponses($cassette) |
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{ |
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$responses = json_decode(file_get_contents($cassette), true); |
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array_walk($responses, function(&$response){ |
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$response['body'] = base64_decode($response['body']); |
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}); |
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return $responses; |
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} |
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/** |
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* Handle the request/response |
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* |
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* @param callable $handler |
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* @return \Closure |
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*/ |
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public function __invoke(callable $handler) |
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{ |
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return function (\Psr\Http\Message\RequestInterface $request, array $config) use ($handler) { |
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return $handler($request, $config)->then( |
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function (\Psr\Http\Message\ResponseInterface $response) use ($request) { |
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$responses = []; |
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if (file_exists($this->cassette)) { |
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//No need to base64 decode body of response here. |
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$responses = json_decode(file_get_contents($this->cassette), true); |
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} |
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$cassette = $response->withAddedHeader('X-VCR-Recording', time()); |
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$responses[] = [ |
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'status' => $cassette->getStatusCode(), |
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'headers' => $cassette->getHeaders(), |
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'body' => base64_encode((string) $cassette->getBody()), |
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'version' => $cassette->getProtocolVersion(), |
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'reason' => $cassette->getReasonPhrase() |
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]; |
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file_put_contents($this->cassette, json_encode($responses, JSON_PRETTY_PRINT)); |
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return $response; |
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}, |
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function (\Exception $reason) { |
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return new \GuzzleHttp\Promise\RejectedPromise($reason); |
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} |
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); |
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}; |
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} |
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} |
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dshafik /
guzzlehttp-vcr
