private void OnStockTick(object sender, StockTick stockTick)
{
var quoteSymbol = stockTick.QuoteSymbol;
lock (_stockTickLocker)
{
var stockInfoExists = _stockInfos.TryGetValue(quoteSymbol, out StockInfo stockInfo);
if (stockInfoExists)
{
var priceDiff = stockTick.Price - stockInfo.PrevPrice;
var changeRatio = Math.Abs(priceDiff / stockInfo.PrevPrice);
if (changeRatio > maxChangeRatio)
{
//Do SOmething with the stock - notify user or display on screen
Console.WriteLine("Stock:{0} has changed with {1:N2} ratio, Old Price:{2} New Price:{3}",
quoteSymbol,
changeRatio,
stockInfo.PrevPrice,
stockTick.Price);
}
_stockInfos[quoteSymbol].PrevPrice = stockTick.Price;
}
else
{
_stockInfos[quoteSymbol] = new StockInfo(quoteSymbol, stockTick.Price);
}
}
}
public void Tick(StockTick stockTick)
{
StockTick.Invoke(this, stockTick);
}