public override void RequestUpdates(List <string> symbols, DateTime startDate, DateTime endDate, BarScale scale, int barInterval, IUpdateRequestCompleted requestCompleted)
{
List <Task> tasks = new List <Task>();
BarDataScale dataScale = new BarDataScale(scale, barInterval);
foreach (string updSymbol in symbols)
{
SymbolDescription symbolDescription = GetSymbolDescription(updSymbol);
if (symbolDescription != null)
{
tasks.Add(Task.Factory.StartNew((object updateRequiredSymbol) =>
{
string symbol = (string)updateRequiredSymbol;
DateTime currentDate = DateTime.Now;
Bars bars = new Bars(symbol, scale, barInterval);
try
{
string suffix = GetSuffix(dataScale);
int corrections = 0;
bars.AppendWithCorrections(GetHistory(dataScale, symbol, suffix), out corrections);
if (bars.Count > 0 && bars.Date[bars.Count - 1] > currentDate)
{
bars.Delete(bars.Count - 1);
}
requestCompleted.UpdateCompleted(bars);
}
catch (Exception exception)
{
logger.Error(exception);
requestCompleted.UpdateError(symbol, exception);
}
}, updSymbol));
}
else
{
requestCompleted.UpdateError(updSymbol, new Exception("В формате имени инструмента была допущена ошибка"));
}
}
if (tasks.Count > 0)
{
Task.WaitAll(tasks.ToArray());
}
requestCompleted.ProcessingCompleted();
}
public override Bars RequestData(DataSource ds, string symbol, DateTime startDate, DateTime endDate, int maxBars, bool includePartialBar)
{
Bars bars = new Bars(symbol, ds.Scale, ds.BarInterval);
List <SymbolDescription> symbolDescriptions = SymbolDescription.DeserializeList(ds.DSString);
SymbolDescription description = symbolDescriptions.Find(x => x.FullCode == symbol);
if (description != null && OnDemandUpdate)
{
_dataStore.LoadBarsObject(bars);
DateTime currentDate = DateTime.Now;
try
{
string suffix = GetSuffix(ds.BarDataScale);
int correction = 0;
bars.AppendWithCorrections(GetHistory(ds.BarDataScale, description.FullCode, suffix), out correction);
}
catch (Exception exception)
{
logger.Error(exception);
MessageBox.Show(string.Format("[{0}] {1}", symbol, exception.Message), "Внимание! Произошла ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (bars.Count > 0 && bars.Date[bars.Count - 1] > currentDate && !includePartialBar)
{
bars.Delete(bars.Count - 1);
}
if (!base.IsStreamingRequest)
{
lock (_locker)
_dataStore.SaveBarsObject(bars);
}
}
else
{
_dataStore.LoadBarsObject(bars, startDate, endDate, maxBars);
}
return(bars);
}
public override void UpdateDataSource(DataSource ds, IDataUpdateMessage dataUpdateMsg)
{
_cancelTokenSource = new CancellationTokenSource();
dataUpdateMsg.ReportUpdateProgress(0);
if (string.IsNullOrWhiteSpace(ds.DSString))
{
List <SymbolDescription> symbolDescriptions = (from symbol in ds.Symbols
select GetSymbolDescription(symbol)).ToList();
ds.DSString = SymbolDescription.SerializeList(symbolDescriptions);
}
List <SymbolDescription> updateRequired = (from description in SymbolDescription.DeserializeList(ds.DSString)
where UpdateRequired(description, ds.BarDataScale)
select description).ToList();
dataUpdateMsg.DisplayUpdateMessage(string.Format("Количество инструментов требующих обновления: {0}", updateRequired.Count));
if (updateRequired.Count > 0)
{
dataUpdateMsg.DisplayUpdateMessage("Запуск обновления инструментов:");
Task[] tasks = new Task[updateRequired.Count];
for (int i = 0; i < updateRequired.Count; i++)
{
dataUpdateMsg.DisplayUpdateMessage(string.Format("[START] Инструмент: {0} - Обновление запущено", updateRequired[i].FullCode));
tasks[i] = Task.Factory.StartNew((object updateRequiredSymbol) =>
{
string symbol = (string)updateRequiredSymbol;
DateTime currentDate = DateTime.Now;
Bars bars = new Bars(symbol, ds.Scale, ds.BarInterval);
_dataStore.LoadBarsObject(bars);
try
{
string suffix = GetSuffix(ds.BarDataScale);
int corrections = 0;
bars.AppendWithCorrections(GetHistory(ds.BarDataScale, symbol, suffix), out corrections);
if (bars.Count > 0 && bars.Date[bars.Count - 1] > currentDate)
{
bars.Delete(bars.Count - 1);
}
lock (_locker)
_dataStore.SaveBarsObject(bars);
dataUpdateMsg.DisplayUpdateMessage(string.Format("[COMPLETE] Инструмент: {0} - Обновление завершено", symbol));
}
catch (Exception exception)
{
logger.Error(exception);
dataUpdateMsg.DisplayUpdateMessage(string.Format("[ERROR] Инструмент {0} - {1}", symbol, exception.Message));
}
}, updateRequired[i].FullCode);
}
try
{
Task.WaitAll(tasks);
}
catch (AggregateException exception)
{
exception.Handle((inner) =>
{
if (inner is OperationCanceledException)
{
return(true);
}
else
{
logger.Error(inner);
return(false);
}
});
}
}
}
