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<?php |
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namespace BenTools\MercurePHP\Hub; |
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use BenTools\MercurePHP\Configuration\Configuration; |
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use BenTools\MercurePHP\Metrics\MetricsHandlerInterface; |
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use BenTools\MercurePHP\Security\CORS; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Log\LoggerInterface; |
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use React\EventLoop\LoopInterface; |
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use React\Http; |
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use React\Promise\PromiseInterface; |
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use React\Socket; |
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use React\Socket\ConnectionInterface; |
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final class Hub implements HubInterface |
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{ |
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private array $config; |
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private LoopInterface $loop; |
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private LoggerInterface $logger; |
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private RequestHandler $requestHandler; |
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private CORS $cors; |
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private MetricsHandlerInterface $metricsHandler; |
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private ?int $shutdownSignal; |
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public function __construct( |
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array $config, |
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LoopInterface $loop, |
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RequestHandler $requestHandler, |
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MetricsHandlerInterface $metricsHandler, |
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LoggerInterface $logger |
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) { |
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$this->config = $config; |
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$this->loop = $loop; |
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$this->requestHandler = $requestHandler; |
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$this->metricsHandler = $metricsHandler; |
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$this->logger = $logger; |
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$this->cors = new CORS($config); |
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} |
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public function run(): void |
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{ |
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$localAddress = $this->config[Configuration::ADDR]; |
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$this->shutdownSignal = null; |
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$this->metricsHandler->resetUsers($localAddress); |
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$this->loop->addSignal(SIGINT, function ($signal) { |
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$this->stop($signal, $this->loop); |
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}); |
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$this->loop->addPeriodicTimer( |
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15, |
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fn() => $this->metricsHandler->getNbUsers()->then( |
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function (int $nbUsers) { |
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$memory = \memory_get_usage(true) / 1024 / 1024; |
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$this->logger->debug("Users: {$nbUsers} - Memory: {$memory}MB"); |
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} |
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) |
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); |
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$socket = $this->createSocketConnection($localAddress, $this->loop); |
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$this->serve($localAddress, $socket, $this->loop); |
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} |
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public function getShutdownSignal(): ?int |
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{ |
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return $this->shutdownSignal; |
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} |
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public function __invoke(ServerRequestInterface $request): PromiseInterface |
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{ |
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return $this->requestHandler->handle($request) |
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->then(fn(ResponseInterface $response) => $this->cors->decorateResponse($request, $response)); |
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} |
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private function createSocketConnection(string $localAddress, LoopInterface $loop): Socket\Server |
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{ |
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$socket = new Socket\Server($localAddress, $loop); |
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$socket->on('connection', function (ConnectionInterface $connection) use ($localAddress) { |
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$this->metricsHandler->incrementUsers($localAddress); |
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$connection->on('close', fn() => $this->metricsHandler->decrementUsers($localAddress)); |
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}); |
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return $socket; |
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} |
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private function serve(string $localAddress, Socket\Server $socket, LoopInterface $loop): void |
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{ |
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$server = new Http\Server($loop, $this); |
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$server->listen($socket); |
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$this->logger->info("Server running at http://" . $localAddress); |
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$loop->run(); |
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} |
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private function stop(int $signal, LoopInterface $loop): void |
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{ |
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$this->shutdownSignal = $signal; |
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$loop->futureTick(function () use ($loop) { |
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$loop->stop(); |
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}); |
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} |
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} |
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bpolaszek /
mercure-php-hub
