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<?php |
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namespace Thruster\Component\HttpServer; |
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use GuzzleHttp\Psr7\Response; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Thruster\Component\Socket\Server; |
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use Thruster\Component\Socket\Connection; |
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use Thruster\Component\Socket\ServerInterface; |
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use Thruster\Component\Socket\ConnectionInterface; |
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use Thruster\Component\Promise\PromiseInterface; |
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use Thruster\Component\HttpServer\ResponseModifier\DateModifier; |
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use Thruster\Component\HttpServer\ResponseModifier\PoweredByModifier; |
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use Thruster\Component\ServerApplication\ServerApplicationInterface; |
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/** |
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* Class HttpServer |
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* |
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* @package Thruster\Component\HttpServer |
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* @author Aurimas Niekis <[email protected]> |
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*/ |
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class HttpServer |
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{ |
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const VERSION = '0.2'; |
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/** |
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* @var ServerApplicationInterface |
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*/ |
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private $application; |
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/** |
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* @var Server[] |
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*/ |
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private $servers; |
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/** |
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* @var bool |
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*/ |
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private $debug; |
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/** |
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* @var ResponseModifierInterface[] |
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*/ |
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private $responseModifiers; |
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/** |
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* @var int |
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*/ |
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private $servedRequests; |
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/** |
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* @var int |
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*/ |
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private $failedRequests; |
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/** |
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* @var int |
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*/ |
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private $upTime; |
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private function __construct(ServerApplicationInterface $application) |
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{ |
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$this->application = $application; |
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$this->servers = []; |
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$this->debug = false; |
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$this->servedRequests = 0; |
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$this->failedRequests = 0; |
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$this->upTime = time(); |
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$this->responseModifiers = [ |
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new DateModifier(), |
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new PoweredByModifier('Thruster/' . static::VERSION), |
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]; |
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} |
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public static function create(ServerApplicationInterface $application) : self |
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{ |
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return new static($application); |
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} |
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public function attachTo(ServerInterface $server) : self |
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{ |
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if (false !== array_search($server, $this->servers, true)) { |
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return $this; |
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} |
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$this->servers[] = $server; |
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$this->listenTo($server); |
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return $this; |
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} |
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public function withResponseModifier(ResponseModifierInterface $modifier) : self |
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{ |
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if (false !== array_search($modifier, $this->responseModifiers, true)) { |
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return $this; |
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} |
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$this->responseModifiers[] = $modifier; |
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return $this; |
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} |
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public function enableDebug() : self |
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{ |
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$this->debug = true; |
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return $this; |
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} |
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public function getStatistics() : array |
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{ |
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return [ |
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'served_requests' => $this->servedRequests, |
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'failed_requests' => $this->failedRequests, |
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'up_time' => (time() - $this->upTime), |
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]; |
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} |
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private function listenTo(ServerInterface $server, array $options = []) |
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{ |
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$server->on( |
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'connection', |
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function (ConnectionInterface $connection) use ($options) { |
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$request = new Request($connection, $options); |
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$request->on( |
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'received_head', |
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function ($headers, $httpMethod, $uri, $protocolVersion) use ($request, $connection) { |
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$this->servedRequests++; |
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$response = $this->application->processHead($headers, $httpMethod, $uri, $protocolVersion); |
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if (null !== $response) { |
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$connection->removeListener('data', [$request, 'feed']); |
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$response = $this->modifyResponse($response); |
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$request->sendResponse($response); |
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} |
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} |
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); |
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$request->on( |
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'request', |
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function (ServerRequestInterface $serverRequest) use ($request, $connection) { |
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$connection->removeListener('data', [$request, 'feed']); |
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$fulfilled = function (ResponseInterface $response) use ($request) { |
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$response = $this->modifyResponse($response); |
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$request->sendResponse($response); |
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}; |
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$rejected = function (\Throwable $exception) use ($request) { |
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$this->failedRequests++; |
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$response = new Response(500); |
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if (true === $this->debug) { |
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$error = [ |
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'class' => get_class($exception), |
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'message' => $exception->getMessage(), |
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'code' => $exception->getCode(), |
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'file' => $exception->getFile(), |
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'line' => $exception->getLine() |
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]; |
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$response = $response->withHeader('Content-Type', 'application/json'); |
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$response->getBody()->write(json_encode($error)); |
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} |
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$response = $this->modifyResponse($response); |
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$request->sendResponse($response); |
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}; |
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$this->application->processRequest($serverRequest)->done($fulfilled, $rejected); |
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} |
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); |
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$connection->on('data', [$request, 'feed']); |
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} |
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); |
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} |
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private function modifyResponse(ResponseInterface $response) : ResponseInterface |
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{ |
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foreach ($this->responseModifiers as $responseModifier) { |
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$response = $responseModifier->modify($response); |
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} |
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return $response; |
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} |
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} |
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