/**
* @param ZmqEvent $event
* @return mixed
*/
public function __invoke($event)
{
return Observable::create(function (ObserverInterface $observer) use($event) {
$id = $event->getLabel('id');
$req = new ZmqRequest();
$req->subscribe($observer);
$disposable = $this->source->filter(function (Event $event) use($id) {
return $event->hasLabel('id', $id);
})->take(1)->subscribe($req);
$req->subscribeCallback(null, null, function () use($disposable) {
$disposable->dispose();
});
return new CallbackDisposable(function () use($disposable) {
$disposable->dispose();
});
});
}
