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<?php declare(strict_types=1); |
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namespace ApiClients\Client\Pusher; |
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use React\EventLoop\LoopInterface; |
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use Rx\Disposable\CallbackDisposable; |
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use Rx\Observable; |
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use Rx\ObservableInterface; |
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use Rx\ObserverInterface; |
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use Rx\SchedulerInterface; |
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use Rx\Websocket\Client as WebsocketClient; |
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use Rx\Websocket\MessageSubject; |
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use function React\Promise\resolve; |
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use function EventLoop\getLoop; |
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use function EventLoop\setLoop; |
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final class AsyncClient |
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{ |
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/** |
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* @var Observable\RefCountObservable |
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*/ |
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protected $client; |
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/** |
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* @var Observable\AnonymousObservable |
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*/ |
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protected $messages; |
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/** |
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* @var array |
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*/ |
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protected $channels = []; |
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/** |
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* @param LoopInterface $loop |
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* @param string $app Application ID |
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*/ |
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public function __construct(LoopInterface $loop, string $app) |
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{ |
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// Set loop into global look accessor |
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setLoop($loop); |
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//Only create one connection and share the most recent among all subscriber |
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$this->client = (new WebsocketClient(ApiSettings::createUrl($app)))->shareReplay(1); |
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$this->messages = $this->client |
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->flatMap(function (MessageSubject $ms) { |
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return $ms; |
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}) |
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->map('json_decode'); |
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} |
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/** |
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* Listen on a channel |
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* |
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* @param string $channel Channel to listen on |
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* @return ObservableInterface |
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*/ |
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public function channel(string $channel): ObservableInterface |
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{ |
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if (isset($this->channels[$channel])) { |
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return $this->channels[$channel]; |
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} |
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$channelMessages = $this->messages->filter(function ($event) use ($channel) { |
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return isset($event->channel) && $event->channel == $channel; |
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}); |
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$events = Observable::create(function ( |
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ObserverInterface $observer, |
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SchedulerInterface $scheduler |
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) use ( |
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$channel, |
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$channelMessages |
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) { |
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$subscription = $channelMessages |
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->filter(function ($msg) { |
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return $msg->event !== 'pusher_internal:subscription_succeeded'; |
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}) |
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->subscribe($observer, $scheduler); |
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$this->send(['event' => 'pusher:subscribe', 'data' => ['channel' => $channel]]); |
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return new CallbackDisposable(function () use ($channel, $subscription) { |
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$this->send(['event' => 'pusher:unsubscribe', 'data' => ['channel' => $channel]]); |
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$subscription->dispose(); |
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}); |
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}); |
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$this->channels[$channel] = $events->share(); |
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return $this->channels[$channel]; |
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} |
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/** |
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* Send a message through the client |
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* |
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* @param array $message Message to send, will be json encoded |
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*/ |
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public function send(array $message) |
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{ |
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$this->client |
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->take(1) |
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->subscribeCallback(function (MessageSubject $ms) use ($message) { |
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$ms->send(json_encode($message)); |
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}); |
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} |
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} |
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php-api-clients /
pusher
