public static bool AddOrUpdateStock(Stock stock)
{
stock.Symbol = stock.Symbol.Trim().ToUpper();
if (Stocks.ContainsKey(stock.Symbol))
{
Stocks[stock.Symbol].Price = stock.Price;
return false;
}
Stocks.TryAdd(stock.Symbol, stock);
return true;
}
public static bool TryUpdateStockPrice(Stock stock)
{
// Randomly choose whether to udpate this stock or not
var r = UpdateOrNotRandom.NextDouble();
if (r > 0.1)
{
return false;
}
// Update the stock price by a random factor of the range percent
var random = new Random((int)Math.Floor(stock.Price));
var percentChange = random.NextDouble() * RangePercent;
var pos = random.NextDouble() > 0.51;
var change = Math.Round(stock.Price * (decimal)percentChange, 2);
change = pos ? change : -change;
stock.Price += change;
return true;
}
/// <summary>
/// Do a conditional send to only clients listening for the actual stock
/// </summary>
/// <param name="stock"></param>
public void Tick(Stock stock)
{
//Send only to client having this stock in their list
this.InvokeTo<StockController>(p => p.MyStocks.Contains(stock.Symbol), stock, "tick");
}