public virtual ResizeableArray <CandleStickData> DownloadCandleStickData(TickerInputInfo info)
{
CachedCandleStickData savedData = new CachedCandleStickData()
{
Exchange = info.Exchange, TickerName = info.TickerName, IntervalMin = info.KlineIntervalMin, StartDate = info.StartDate, EndDate = info.EndDate, BaseCurrency = info.Ticker.BaseCurrency, MarketCurrency = info.Ticker.MarketCurrency
};
CachedCandleStickData cachedData = CachedCandleStickData.FromFile(CachedCandleStickData.Directory + "\\" + ((ISupportSerialization)savedData).FileName);
info.CheckUpdateTime();
if (cachedData != null)
{
if (info.StartDate != DateTime.MinValue && info.StartDate == cachedData.Items[0].Time.Date && info.EndDate == cachedData.Items.Last().Time.Date)
{
return(cachedData.Items);
}
}
DateTime start = info.StartDate;
int intervalInSeconds = info.KlineIntervalMin * 60;
ResizeableArray <CandleStickData> res = new ResizeableArray <CandleStickData>();
int deltaCount = 500;
long minCount = (long)(SettingsStore.Default.SimulationSettings.KLineHistoryIntervalDays) * 24 * 60;
long candleStickCount = minCount / info.KlineIntervalMin;
long pageCount = candleStickCount / deltaCount;
int pageIndex = 0;
DownloadProgress = 0.0;
DownloadText = "Donwloading CandleStick Data for " + info.Exchange + ":" + info.TickerName;
if (!info.Ticker.Exchange.SupportCandleSticksRange)
{
ResizeableArray <CandleStickData> data = info.Ticker.GetCandleStickData(info.KlineIntervalMin, start, intervalInSeconds * deltaCount);
if (data == null)
{
return(null);
}
DownloadProgress = 100;
var args = RaiseDownloadProgressChanged();
if (args.Cancel)
{
return(null);
}
cachedData = savedData;
cachedData.Items = data;
cachedData.Save();
return(data);
}
while (start.Date < info.EndDate.Date)
{
ResizeableArray <CandleStickData> data = info.Ticker.GetCandleStickData(info.KlineIntervalMin, start, intervalInSeconds * deltaCount);
if (data == null || data.Count == 0)
{
start = start.AddSeconds(intervalInSeconds * deltaCount);
continue;
}
res.AddRange(data);
pageIndex++;
DownloadProgress = pageIndex * 100 / pageCount;
RaiseDownloadProgressChanged();
Thread.Sleep(300);
start = start.AddSeconds(intervalInSeconds * deltaCount);
}
cachedData = savedData;
cachedData.Items = res;
cachedData.Save();
return(res);
}
protected virtual ResizeableArray <CandleStickData> DownloadCandleStickData(TickerInputInfo info)
{
CachedCandleStickData savedData = new CachedCandleStickData()
{
Exchange = info.Exchange, TickerName = info.TickerName, IntervalMin = info.KlineIntervalMin
};
CachedCandleStickData cachedData = CachedCandleStickData.FromFile(CachedCandleStickData.Directory + "\\" + ((ISupportSerialization)savedData).FileName);
if (cachedData != null)
{
// outdated
if (SettingsStore.Default.SimulationSettings.StartTime.Date == cachedData.Items[0].Time.Date)
{
return(cachedData.Items);
}
}
DateTime start = DateTime.UtcNow.Date;
int intervalInSeconds = info.KlineIntervalMin * 60;
//int candleStickCount = 10000;
start = start.AddDays(-SettingsStore.Default.SimulationSettings.KLineHistoryIntervalDays);// .AddSeconds(-intervalInSeconds * candleStickCount);
ResizeableArray <CandleStickData> res = new ResizeableArray <CandleStickData>();
//List<ResizeableArray<CandleStickData>> splitData = new List<ResizeableArray<CandleStickData>>();
int deltaCount = 500;
long minCount = (long)(SettingsStore.Default.SimulationSettings.KLineHistoryIntervalDays) * 24 * 60;
long candleStickCount = minCount / info.KlineIntervalMin;
long pageCount = candleStickCount / deltaCount;
int pageIndex = 0;
DownloadProgress = 0.0;
if (!info.Ticker.Exchange.SupportCandleSticksRange)
{
ResizeableArray <CandleStickData> data = info.Ticker.GetCandleStickData(info.KlineIntervalMin, start, intervalInSeconds * deltaCount);
if (data == null)
{
return(null);
}
DownloadProgress = 100;
RaiseDownloadProgressChanged();
cachedData = savedData;
cachedData.Items = data;
cachedData.Save();
return(data);
}
//for(int i = 0; i < candleStickCount / deltaCount; i++) {
while (start.Date < DateTime.Now.Date)
{
ResizeableArray <CandleStickData> data = info.Ticker.GetCandleStickData(info.KlineIntervalMin, start, intervalInSeconds * deltaCount);
if (data == null || data.Count == 0)
{
start = start.AddSeconds(intervalInSeconds * deltaCount);
continue;
}
res.AddRange(data);
pageIndex++;
DownloadProgress = pageIndex * 100 / pageCount;
RaiseDownloadProgressChanged();
Thread.Sleep(300);
start = start.AddSeconds(intervalInSeconds * deltaCount);
}
cachedData = savedData;
cachedData.Items = res;
cachedData.Save();
return(res);
}
