public StockActor(string stockSymbol)
{
_stockSymbol = stockSymbol;
_subscribers = new HashSet<IActorRef>();
_priceLookupChild = Context.ActorOf(Context.DI().Props<StockPriceLookupActor>());
Receive<SubscribeToNewStockPricesMessage>(message => _subscribers.Add(message.Subscriber));
Receive<UnSubscribeFromNewStockPricesMessage>(message => _subscribers.Remove(message.Subscriber));
Receive<RefreshStockPriceMessage>(message => _priceLookupChild.Tell(message));
Receive<UpdatedStockPriceMessage>(message =>
{
_stockPrice = message.Price;
var stockPriceMessage = new StockPriceMessage(_stockSymbol, _stockPrice, message.Date);
foreach (var subscriber in _subscribers)
{
subscriber.Tell(stockPriceMessage);
}
});
}