internal void AddHistory(CurrencyRateHistoryContainer data)
{
if (data == null || data.Count == 0)
{
return;
}
History.AddRange(data);
}
private CurrencyRateHistoryContainer InternalRetriveData(string currencyName, DateTime startDate, DateTime endDate, bool isNeedToReversePrice)
{
CurrencyRateHistoryContainer result = null;
var symbolName = CreateSymbolName(currencyName, isNeedToReversePrice);
var url = CreateServiceConnectionString(symbolName, startDate, endDate, isNeedToReversePrice);
Log.Info(string.Format("Yahoo: Retrieve historical price data started for Symbol {0}...", symbolName));
try
{
var webClient = new WebClient();
var stream = webClient.OpenRead(url);
if (stream == null)
{
throw new Exception(string.Format("Can`t read Yahoo Service, history update not possible for Symbol {0}", symbolName));
}
var reader = new StreamReader(stream);
var response = reader.ReadToEnd();
result = ParceData(response, isNeedToReversePrice);
if (result == null)
{
Log.Info(string.Format("Yahoo: NO DATA for Symbol: {0}!", symbolName));
}
if (result == null && !isNeedToReversePrice)
{
return(InternalRetriveData(currencyName, startDate, endDate, true));
}
}
catch (WebException ex)
{
if (ex.Message.Contains("404"))
{
if (symbolName == "USD" || symbolName == "GBP" || symbolName == "EUR" || symbolName == "CAD" || symbolName == "AUD" || symbolName == "ILS")
{
Log.Error(string.Format("Yahoo: for Symbol [{0}] Update: {1}", symbolName, ex.Message));
}
else
{
Log.Warn(string.Format("Yahoo: for Symbol [{0}] Update: {1}", symbolName, ex.Message));
}
if (!isNeedToReversePrice)
{
return(InternalRetriveData(currencyName, startDate, endDate, true));
}
}
else
{
Log.Error(ex);
return(null);
}
}
catch (Exception ex)
{
Log.Error(ex.Message);
Log.Error(ex);
throw;
}
Log.Info(string.Format("Yahoo: Retrieve historical price data successfully completed for Symbol {0}!", symbolName));
return(result);
}