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<?php |
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namespace Jalle19\StatusManager\Manager; |
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use Jalle19\StatusManager\Configuration\Configuration; |
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use Jalle19\StatusManager\Event\Events; |
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use Jalle19\StatusManager\Event\InstanceStatusUpdatesEvent; |
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use Jalle19\StatusManager\Exception\MalformedRequestException; |
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use Jalle19\StatusManager\Exception\UnhandledMessageException; |
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use Jalle19\StatusManager\Exception\UnknownRequestException; |
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use Jalle19\StatusManager\Message\AbstractMessage; |
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use Jalle19\StatusManager\Message\Factory as MessageFactory; |
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use Jalle19\StatusManager\Message\Handler\DelegatesMessagesTrait; |
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use Jalle19\StatusManager\Message\StatusUpdatesMessage; |
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use Psr\Log\LoggerInterface; |
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use Ratchet\ConnectionInterface; |
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use Ratchet\Http\HttpServer; |
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use Ratchet\MessageComponentInterface; |
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use Ratchet\Server\IoServer; |
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use Ratchet\WebSocket\WsServer; |
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use React\EventLoop\LoopInterface; |
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use React\Socket\Server as ServerSocket; |
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use Symfony\Component\EventDispatcher\EventDispatcher; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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/** |
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* Handles events related to the WebSocket. Events are either triggered from Ratchet (onOpen etc.) |
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* or from the event dispatcher in StatusManager. |
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* |
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* @package Jalle19\StatusManager |
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* @copyright Copyright © Sam Stenvall 2016- |
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* @license https://www.gnu.org/licenses/gpl.html The GNU General Public License v2.0 |
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*/ |
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class WebSocketManager extends AbstractManager implements MessageComponentInterface, EventSubscriberInterface |
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{ |
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use DelegatesMessagesTrait; |
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/** |
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* @var IoServer the Websocket server |
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*/ |
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private $_websocket; |
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/** |
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* @var \SplObjectStorage the connected clients |
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*/ |
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private $_connectedClients; |
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/** |
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* WebSocketManager constructor. |
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* |
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* @param Configuration $configuration |
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* @param LoggerInterface $logger |
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* @param EventDispatcher $eventDispatcher |
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* @param LoopInterface $loop |
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*/ |
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public function __construct( |
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Configuration $configuration, |
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LoggerInterface $logger, |
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EventDispatcher $eventDispatcher, |
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LoopInterface $loop |
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) { |
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parent::__construct($configuration, $logger, $eventDispatcher); |
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$this->_connectedClients = new \SplObjectStorage(); |
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// Create the socket to listen on |
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$socket = new ServerSocket($loop); |
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$socket->listen($configuration->getListenPort(), $configuration->getListenAddress()); |
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// Create the WebSocket server |
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$this->_websocket = new IoServer(new HttpServer(new WsServer($this)), $socket, $loop); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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Events::MAIN_LOOP_STARTING => 'onMainLoopStarted', |
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Events::INSTANCE_STATUS_UPDATES => 'onInstanceStatusUpdates', |
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]; |
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} |
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/** |
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* Called right before the main loop is started |
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*/ |
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public function onMainLoopStarted() |
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{ |
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$this->logger->info('Starting the Websocket server on {address}:{port}', [ |
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'address' => $this->configuration->getListenAddress(), |
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'port' => $this->configuration->getListenPort(), |
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]); |
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} |
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/** |
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* @param InstanceStatusUpdatesEvent $event |
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*/ |
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public function onInstanceStatusUpdates(InstanceStatusUpdatesEvent $event) |
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{ |
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$this->logger->debug('Broadcasting statuses to all clients'); |
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$message = new StatusUpdatesMessage($event->getInstanceStatusCollection()); |
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foreach ($this->_connectedClients as $client) |
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{ |
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/* @var ConnectionInterface $client */ |
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$this->sendMessage($message, $client); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function onOpen(ConnectionInterface $conn) |
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{ |
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$this->logger->debug('Got client connection'); |
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$this->_connectedClients->attach($conn); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function onClose(ConnectionInterface $conn) |
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{ |
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$this->logger->debug('Got client disconnect'); |
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$this->_connectedClients->detach($conn); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function onError(ConnectionInterface $conn, \Exception $e) |
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{ |
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// TODO: Implement onError() method. |
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} |
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/** |
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* Dispatches incoming client messages to the appropriate handlers |
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* |
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* @param ConnectionInterface $from |
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* @param string $msg |
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*/ |
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public function onMessage(ConnectionInterface $from, $msg) |
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{ |
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try |
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{ |
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$message = MessageFactory::factory($msg); |
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$this->logger->debug('Got message from client (type: {messageType})', [ |
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'messageType' => $message->getType(), |
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]); |
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// Attempt to delegate the message |
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try |
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{ |
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$this->sendMessage($this->tryDelegateMessage($message), $from); |
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} |
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catch (UnhandledMessageException $e) |
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{ |
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$this->logger->error('Unhandled message (type: {messageType})', [ |
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'messageType' => $message->getType(), |
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]); |
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} |
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} |
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catch (MalformedRequestException $e) |
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{ |
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$this->logger->error('Got malformed message from client (reason: {reason})', [ |
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'reason' => $e->getMessage(), |
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]); |
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} |
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catch (UnknownRequestException $e) |
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{ |
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// The server itself sometimes sends out messages that are received here, hence debug |
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$this->logger->debug('Got unknown message from client'); |
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} |
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} |
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/** |
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* @param AbstractMessage $message |
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* @param ConnectionInterface $target |
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*/ |
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private function sendMessage(AbstractMessage $message, ConnectionInterface $target) |
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{ |
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$target->send(json_encode($message)); |
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} |
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} |
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Jalle19 /
tvheadend-status-manager
