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<?php |
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namespace Jenky\Hermes\Middleware; |
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use GuzzleHttp\Exception\RequestException; |
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use Illuminate\Contracts\Events\Dispatcher; |
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use Jenky\Hermes\Events\RequestHandled; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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class RequestEvent |
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{ |
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/** |
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* The event dispatcher instance. |
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* |
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* @var \Illuminate\Contracts\Events\Dispatcher|null |
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*/ |
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protected $dispatcher; |
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/** |
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* Create a new handler instance. |
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* |
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* @param \Illuminate\Contracts\Events\Dispatcher|null $dispatcher |
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* @return void |
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*/ |
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public function __construct(Dispatcher $dispatcher = null) |
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{ |
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$this->dispatcher = $dispatcher; |
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} |
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/** |
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* Handle the request. |
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* |
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* @param callable $handler |
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* @return callable |
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*/ |
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public function __invoke(callable $handler) |
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{ |
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return function (RequestInterface $request, array $options) use ($handler) { |
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return $handler($request, $options)->then( |
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$this->handleSuccess($request, $options), |
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$this->handleFailure($request, $options) |
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); |
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}; |
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} |
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/** |
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* Handler on fulfilled request. |
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* |
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* @param \Psr\Http\Message\RequestInterface $request |
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* @param array $options |
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* @return \Psr\Http\Message\ResponseInterface |
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*/ |
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protected function handleSuccess(RequestInterface $request, array $options) |
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{ |
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return function (ResponseInterface $response) use ($request, $options) { |
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$this->fireEvent($request, $response, $options); |
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return $response; |
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}; |
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} |
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/** |
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* Handler on rejected request. |
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* |
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* @param \Psr\Http\Message\RequestInterface $request |
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* @param array $options |
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* @return \GuzzleHttp\Promise\PromiseInterface |
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*/ |
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protected function handleFailure(RequestInterface $request, array $options) |
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{ |
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return function ($reason) use ($request, $options) { |
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$response = $reason instanceof RequestException |
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? $reason->getResponse() |
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: null; |
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$this->fireEvent($request, $response, $options); |
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return \GuzzleHttp\Promise\rejection_for($reason); |
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}; |
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} |
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/** |
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* Get the event dispatcher instance. |
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* |
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* @return \Illuminate\Contracts\Events\Dispatcher |
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*/ |
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public function getEventDispatcher() |
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{ |
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return $this->dispatcher; |
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} |
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/** |
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* Set the event dispatcher instance. |
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* |
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* @param \Illuminate\Contracts\Events\Dispatcher $dispatcher |
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* @return void |
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*/ |
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public function setEventDispatcher(Dispatcher $dispatcher) |
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{ |
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$this->dispatcher = $dispatcher; |
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} |
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/** |
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* Fires a request event. |
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* |
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* @param \Psr\Http\Message\RequestInterface $request |
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* @param \Psr\Http\Message\ResponseInterface|null $response |
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* @param array $options |
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* @return void |
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*/ |
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protected function fireEvent(RequestInterface $request, ResponseInterface $response = null, array $options = []) |
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{ |
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if ($this->dispatcher) { |
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$this->dispatcher->dispatch(new RequestHandled( |
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$request, $response, $options |
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)); |
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} |
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} |
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} |
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jenky /
hermes
