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<?php |
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namespace Mosaic\Http; |
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use InvalidArgumentException; |
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use Mosaic\Http\Emitters\SapiEmitter; |
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use Mosaic\Http\Server as ServerContract; |
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use Psr\Http\Message\ResponseInterface; |
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use Relay\RelayBuilder; |
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class WebServer implements ServerContract |
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{ |
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/** |
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* @var array |
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*/ |
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protected $pipes = []; |
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/** |
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* @var Emitter |
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*/ |
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protected $emitter; |
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/** |
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* @var callable |
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*/ |
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protected $resolver; |
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/** |
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* @param Emitter $emitter |
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*/ |
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public function __construct(Emitter $emitter = null) |
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{ |
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$this->emitter = $emitter ?: new SapiEmitter; |
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$this->setResolver(function ($class) { |
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return new $class; |
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}); |
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} |
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/** |
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* @param Request $request |
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* @param callable|null $terminate |
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*/ |
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public function serve(Request $request, callable $terminate = null) |
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{ |
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if (count($this->pipes) < 1) { |
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throw new InvalidArgumentException('No pipes were given to the web server. Response could not be served.'); |
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} |
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ob_start(); |
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$bufferLevel = ob_get_level(); |
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$response = $this->relay($request); |
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if (is_callable($terminate)) { |
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$terminate($request->toPsr7(), $response); |
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} |
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$this->getEmitter()->emit($response, $bufferLevel); |
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} |
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/** |
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* @param Request $request |
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* @return ResponseInterface |
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*/ |
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protected function relay(Request $request) |
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{ |
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$relay = (new RelayBuilder($this->resolver))->newInstance($this->pipes); |
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$response = $relay( |
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$request->toPsr7(), |
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$request->prepareResponse()->toPsr7() |
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); |
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return $response; |
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} |
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/** |
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* @param array ...$pipes |
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* @return Server |
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*/ |
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public function pipe(...$pipes) |
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{ |
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$this->pipes = $pipes; |
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return $this; |
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} |
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/** |
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* @return Emitter |
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*/ |
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protected function getEmitter() : Emitter |
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{ |
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return $this->emitter; |
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} |
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/** |
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* @param callable $resolver |
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* @return Server |
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*/ |
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public function setResolver(callable $resolver) |
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{ |
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$this->resolver = $resolver; |
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return $this; |
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} |
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} |
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