protected override void Subscribe(string symbol)
{
if (string.IsNullOrWhiteSpace(symbol) || !IsConnected)
{
return;
}
if (_dataStore.GetExistingSymbols().Exists(x => x == symbol) && !_subscriptions.ContainsKey(symbol))
{
CancellationTokenSource tokenSource = new CancellationTokenSource();
_subscriptions.Add(symbol, tokenSource);
Task.Factory.StartNew(x =>
{
string subscribedSymbol = (string)x;
_streamingProvider.Stream(subscribedSymbol, tokenSource.Token);
_subscriptions.Remove(subscribedSymbol);
}, symbol, tokenSource.Token);
}
}
public override void UpdateProvider(IDataUpdateMessage dataUpdateMsg, List <DataSource> dataSources, bool updateNonDSSymbols, bool deleteNonDSSymbols)
{
foreach (BarDataScale scale in this._dataStore.GetExistingBarScales())
{
if (_cancelTokenSource != null && _cancelTokenSource.IsCancellationRequested)
{
dataUpdateMsg.DisplayUpdateMessage("Обновление провайдера отменено");
break;
}
dataUpdateMsg.DisplayUpdateMessage("Обновление таймфрейма " + scale.ToString());
var visibleSymbols = from dataSource in dataSources
where dataSource.BarDataScale == scale
select SymbolDescription.DeserializeList(dataSource.DSString);
List <SymbolDescription> symbols = new List <SymbolDescription>();
foreach (List <SymbolDescription> visibleSymbol in visibleSymbols)
{
symbols.AddRange(visibleSymbol);
}
if (updateNonDSSymbols)
{
var nonDSSymbols = from symbol in _dataStore.GetExistingSymbols(scale.Scale, scale.BarInterval)
where !symbols.Exists(x => x.FullCode == symbol)
select GetSymbolDescription(symbol);
symbols.AddRange(nonDSSymbols);
}
DataSource dsVirtual = new DataSource(this);
dsVirtual.Name = "VirtualDSr";
dsVirtual.BarDataScale = scale;
dsVirtual.DSString = SymbolDescription.SerializeList(symbols);
UpdateDataSource(dsVirtual, dataUpdateMsg);
if (deleteNonDSSymbols)
{
dataUpdateMsg.DisplayUpdateMessage("--------------");
dataUpdateMsg.DisplayUpdateMessage("Удаление истории инструментов не входящих ни в один набор данных данного таймфрейма:");
var nonDSSymbols = from symbol in _dataStore.GetExistingSymbols(scale.Scale, scale.BarInterval)
where !symbols.Exists(x => x.FullCode == symbol)
select symbol;
foreach (string symbol in nonDSSymbols)
{
lock (_locker)
_dataStore.RemoveFile(symbol, scale.Scale, scale.BarInterval);
dataUpdateMsg.DisplayUpdateMessage(string.Format("[DELETED] Инструмент {0} - История удалена", symbol));
}
if (nonDSSymbols.Count() == 0)
{
dataUpdateMsg.DisplayUpdateMessage(string.Format("[NA] Инструменты для удаления не найдены"));
}
}
dataUpdateMsg.DisplayUpdateMessage("--------------");
}
}