protected void NotifySubscribers(IPriceUpdate priceUpdate)
{
foreach (var c in _priceUpdateSubscribers)
{
c.OnPriceUpdate(priceUpdate);
}
}
private void WaitingForPriceHistory()
{
Receive <PriceHistory>(p =>
{
if (p.HistoricalPrices.IsEmpty)
{
_commandHandlerActor.Tell(new CommandResponse($"No historical price data for [{_tickerSymbol}] - waiting for updates.", false));
BecomePriceUpdates();
return;
}
_currentPrice = p.CurrentPriceUpdate;
foreach (var e in p.HistoricalPrices)
{
_commandHandlerActor.Tell(new CommandResponse(e.ToString(), false));
}
BecomePriceUpdates();
});
Receive <ReceiveTimeout>(t =>
{
_commandHandlerActor.Tell(new CommandResponse($"No historical price data for [{_tickerSymbol}] - waiting for updates.", false));
BecomePriceUpdates();
});
ReceiveAny(_ => Stash.Stash());
}
private void WaitingForPriceHistory()
{
Receive <PriceAndVolumeSnapshot>(p =>
{
if (p.PriceUpdates.Length == 0)
{
_commandHandlerActor.Tell(new CommandResponse($"No historical price data for [{_tickerSymbol}] - waiting for updates.", false));
BecomeWaitingForSubscribe();
return;
}
_currentPrice = p.PriceUpdates.Last();
foreach (var e in p.PriceUpdates)
{
_commandHandlerActor.Tell(new CommandResponse(e.ToString(), false));
}
BecomeWaitingForSubscribe();
});
Receive <ReceiveTimeout>(t =>
{
_commandHandlerActor.Tell(new CommandResponse($"No historical price data for [{_tickerSymbol}] - waiting for updates.", false));
BecomeWaitingForSubscribe();
});
ReceiveAny(_ => Stash.Stash());
}
public int CompareTo(IPriceUpdate other)
{
if (other is PriceChanged c)
{
return(CompareTo(c));
}
throw new ArgumentException();
}
public PriceHistory WithPrice(IPriceUpdate update)
{
if (!update.StockId.Equals(StockId))
{
throw new ArgumentOutOfRangeException($"Expected ticker symbol {StockId} but found {update.StockId}", nameof(update));
}
return(new PriceHistory(StockId, HistoricalPrices.Add(update)));
}
private void PriceUpdates()
{
Receive <IPriceUpdate>(p =>
{
_currentPrice = p;
_commandHandlerActor.Tell(new CommandResponse(p.ToString(), false));
});
Receive <Terminated>(t =>
{
_commandHandlerActor.Tell(new CommandResponse("Price View Actor terminated."));
Context.Stop(Self);
});
}
public async Task WritePriceChanged(IPriceUpdate e)
{
await WriteMessage(e.ToString());
}
public void OnPriceUpdate(IPriceUpdate update)
{
Console.WriteLine("Symbol: {0} Bid: {1} Ask: {2} Timestamp: {3}", update.Instrument, update.BidPrice,
update.AskPrice, update.ServerTimestamp);
}
