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<?php declare(strict_types=1); |
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namespace ekinhbayar\GitAmp\Websocket; |
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use Amp\Delayed; |
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use Amp\Http\Server\HttpServer; |
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use Amp\Http\Server\Request; |
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use Amp\Http\Server\Response; |
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use Amp\Http\Status; |
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use Amp\Promise; |
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use Amp\Success; |
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use Amp\Websocket\Client; |
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use Amp\Websocket\Server\ClientHandler; |
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use Amp\Websocket\Server\Gateway; |
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use Amp\Websocket\Server\WebsocketServerObserver; |
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use ekinhbayar\GitAmp\Provider\Listener; |
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use ekinhbayar\GitAmp\Response\Results; |
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use Psr\Log\LoggerInterface; |
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use function Amp\asyncCall; |
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use function Amp\call; |
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class Handler implements ClientHandler, WebsocketServerObserver |
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{ |
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private Gateway $gateway; |
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private string $origin; |
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private Listener $provider; |
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private ?Results $lastEvents = null; |
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private LoggerInterface $logger; |
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public function __construct(string $origin, Listener $provider, LoggerInterface $logger) |
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{ |
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$this->origin = $origin; |
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$this->provider = $provider; |
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$this->logger = $logger; |
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} |
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public function handleHandshake(Gateway $gateway, Request $request, Response $response): Promise |
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{ |
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if ($request->getHeader('origin') !== $this->origin) { |
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return $gateway->getErrorHandler()->handleError(Status::FORBIDDEN, 'Forbidden Origin', $request); |
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} |
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return new Success($response); |
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} |
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public function handleClient(Gateway $gateway, Client $client, Request $request, Response $response): Promise |
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{ |
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$client->onClose(function (Client $client, int $code, string $reason) use ($gateway) { |
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$this->logger->info( |
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\sprintf( |
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'Client %d disconnected. Code: %d Reason: %s. Total clients: %d', |
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$client->getId(), |
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$code, |
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$reason, |
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count($gateway->getClients()), |
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) |
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); |
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$this->sendConnectedUsersCount(count($gateway->getClients())); |
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}); |
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$this->logger->info( |
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\sprintf('Client %d connected. Total clients: %d', $client->getId(), count($gateway->getClients())), |
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); |
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$this->sendConnectedUsersCount(\count($gateway->getClients())); |
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if ($this->lastEvents) { |
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$client->send($this->lastEvents->jsonEncode()); |
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} |
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return call(function () use ($gateway, $client): \Generator { |
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while ($message = yield $client->receive()) { |
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// intentionally keep receiving, otherwise the connection closes instantly for some reason |
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} |
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}); |
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} |
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private function emit(Results $events): void |
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{ |
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if (!$events->hasEvents()) { |
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return; |
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} |
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$this->lastEvents = $events; |
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$this->gateway->broadcast($events->jsonEncode()); |
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} |
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private function sendConnectedUsersCount(int $count): void |
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{ |
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$this->gateway->broadcast(\json_encode(['connectedUsers' => $count])); |
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} |
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public function onStart(HttpServer $server, Gateway $gateway): Promise |
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{ |
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$this->gateway = $gateway; |
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asyncCall(function () { |
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while (true) { |
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$this->emit(yield $this->provider->listen()); |
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yield new Delayed(25000); |
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} |
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}); |
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return new Success(); |
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} |
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public function onStop(HttpServer $server, Gateway $gateway): Promise |
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{ |
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return new Success(); |
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} |
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} |
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ekinhbayar /
gitamp
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This check looks for imports that have been defined, but are not used in the scope.