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<?php declare(strict_types = 1); |
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namespace ekinhbayar\GitAmp\Websocket; |
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use function Amp\asyncCall; |
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use Amp\Delayed; |
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use Aerys\Request; |
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use Aerys\Response; |
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use Aerys\Websocket; |
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use Aerys\Websocket\Endpoint; |
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use ekinhbayar\GitAmp\Provider\Listener; |
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use ekinhbayar\GitAmp\Response\Results; |
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use ekinhbayar\GitAmp\Storage\Counter; |
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class Handler implements Websocket |
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{ |
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/** @var Endpoint */ |
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private $endpoint; |
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private $counter; |
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private $origin; |
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private $provider; |
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/** @var Results */ |
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private $lastEvents; |
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public function __construct(Counter $counter, string $origin, Listener $provider) |
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{ |
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$this->origin = $origin; |
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$this->counter = $counter; |
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$this->provider = $provider; |
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} |
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public function onStart(Endpoint $endpoint) |
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{ |
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$this->endpoint = $endpoint; |
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$this->counter->set(0); |
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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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} |
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public function onHandshake(Request $request, Response $response) |
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{ |
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if ($request->getHeader('origin') !== $this->origin) { |
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$response->setStatus(403); |
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$response->end('<h1>origin not allowed</h1>'); |
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return null; |
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} |
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return $request->getConnectionInfo()['client_addr']; |
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} |
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public function onOpen(int $clientId, $handshakeData) |
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{ |
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$this->counter->increment(); |
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$this->sendConnectedUsersCount($this->counter->get()); |
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if ($this->lastEvents) { |
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$this->endpoint->send($this->lastEvents->jsonEncode(), $clientId); |
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} |
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} |
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private function emit(Results $events) |
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{ |
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if (!$events->hasEvents()) { |
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return; |
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} |
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$this->lastEvents = $events; |
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$this->endpoint->broadcast($events->jsonEncode()); |
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} |
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private function sendConnectedUsersCount(int $count) |
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{ |
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$this->endpoint->broadcast(\json_encode(['connectedUsers' => $count])); |
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} |
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public function onData(int $clientId, Websocket\Message $msg) |
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{ |
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// yielding $msg buffers the complete payload into a single string. |
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} |
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public function onClose(int $clientId, int $code, string $reason) |
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{ |
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$this->counter->decrement(); |
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$this->sendConnectedUsersCount($this->counter->get()); |
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} |
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public function onStop() |
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{ |
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// intentionally left blank |
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} |
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} |
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ekinhbayar /
gitamp
