/// <summary>
/// 插入資訊
/// </summary>
/// <param name="series">SeriesSymbolData 類別</param>
/// <param name="date">欲插入的日期(資料會被插入至該指定的日期前)</param>
internal void Insert(SeriesSymbolData series, DateTime date)
{
try {
string sFile = string.Format("{0}\\{1}\\{2}", __sPath, (series.DataRequest.Resolution.TotalSeconds < Resolution.MAX_BASE_TOTALSECONDS) ? "mins" : "days", series.DataRequest.Symbol);
using (FileStream cStream = new FileStream(sFile, (__bCreate) ? FileMode.Create : FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite)) {
bool bFind = false;
if (!__bCreate)
{
long lCount = cStream.Length / MAX_BLOCK_SIZE;
bFind = FileSearchUtil.BinaryNearSearch(cStream, lCount, MAX_BLOCK_SIZE, date);
}
if (bFind)
{
long lCurrentP = cStream.Position;
//先保留後面的資料以便插入時不會被覆蓋
long lRevSize = cStream.Length - lCurrentP;
ZBuffer cTemp = new ZBuffer((int)lRevSize);
cStream.Read(cTemp.Data, 0, (int)lRevSize);
cTemp.Length = (int)lRevSize;
cStream.SetLength(lCurrentP + 1);
cStream.Position = lCurrentP; //移動置固定位置
ZBuffer cBuffer = new ZBuffer(64);
int iHistoryIndex = series.Indexer.HistoryIndex;
int iCount = series.Count;
for (int i = 0; i < iCount; i++)
{
int iIndex = iHistoryIndex + i;
cBuffer.Length = 0;
cBuffer.Add(series.Time[iIndex]);
cBuffer.Add(series.Open[iIndex]);
cBuffer.Add(series.High[iIndex]);
cBuffer.Add(series.Low[iIndex]);
cBuffer.Add(series.Close[iIndex]);
cBuffer.Add(series.Volume[iIndex]);
cStream.Write(cBuffer.Data, 0, cBuffer.Length);
}
cStream.Write(cTemp.Data, 0, cTemp.Length); //再將後面的資料合併
}
}
if (logger.IsInfoEnabled)
{
logger.InfoFormat("[FileWrite] {0} insert completed... count={1}", sFile, series.Count);
}
} catch (Exception __errExcep) {
if (logger.IsErrorEnabled)
{
logger.ErrorFormat("[FileWrite] '{0}' insert error...", series.DataRequest.Symbol, series.Count);
}
if (logger.IsErrorEnabled)
{
logger.ErrorFormat("{0}/r/n{1}", __errExcep.Message, __errExcep.StackTrace);
}
}
}
public void ProcessRequest(HttpContext context)
{
HttpResponse cResponse = context.Response;
cResponse.ContentType = "application/octet-stream";
HttpRequest cRequest = context.Request;
string sExchange = cRequest.Form["exchange"]; //交易所簡稱
string sSymbolId = cRequest.Form["symbolId"]; //商品代號
int iTimeFrame = int.Parse(cRequest.Form["timeFrame"]); //時間週期(60=1分, 300=5分)
long lPosition = long.Parse(cRequest.Form["position"]); //客戶端目前歷史資料的檔案位置
DateTime cStartDate = DateTime.Parse(cRequest.Form["startDate"]); //資料起始時間
DateTime cEndDate = DateTime.Parse(cRequest.Form["endDate"]); //資料結束時間
int iCount = int.Parse(cRequest.Form["count"]); //資料請求個數
string sTimeFrameFormat = (iTimeFrame < DAY_TIMEFRAME_FORMAT) ? "mins" : "days";
string sFilename = context.Server.MapPath(string.Format("~/data/{0}/{1}/{2}", sExchange, sTimeFrameFormat, sSymbolId));
if (File.Exists(sFilename))
{
using (FileStream cStream = new FileStream(sFilename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
try {
long lStartPosition = 0, lEndPosition = lPosition * DATA_BLOCK_SIZE;
int iBlockCount = (int)(cStream.Length / DATA_BLOCK_SIZE);
iCount = ((iCount < iBlockCount) ? iCount : iBlockCount);
if (iCount == 0)
{
if (lPosition == -1)
{
FileSearchUtil.BinaryNearSearch(cStream, iBlockCount, DATA_BLOCK_SIZE, cEndDate.AddSeconds(86400));
lEndPosition = cStream.Position;
}
FileSearchUtil.BinaryNearSearch(cStream, iBlockCount, DATA_BLOCK_SIZE, cStartDate);
lStartPosition = cStream.Position;
iCount = (int)((lEndPosition - lStartPosition) / DATA_BLOCK_SIZE);
}
else
{
if (lPosition == -1)
{
FileSearchUtil.BinaryNearSearch(cStream, iBlockCount, DATA_BLOCK_SIZE, cEndDate.AddSeconds(86400));
lEndPosition = cStream.Position;
}
lStartPosition = lEndPosition - iCount * DATA_BLOCK_SIZE;
lStartPosition = (lStartPosition < 0) ? 0 : lStartPosition;
iCount = (int)((lEndPosition - lStartPosition) / DATA_BLOCK_SIZE);
}
lPosition = lStartPosition / DATA_BLOCK_SIZE;
int iSize = iCount * DATA_BLOCK_SIZE;
byte[] bData = new byte[iSize];
cStream.Position = lStartPosition;
iSize = cStream.Read(bData, 0, iSize);
int iBeginDate = BitConverter.ToInt32(bData, 0); //起始日期
int iEndDate = BitConverter.ToInt32(bData, iSize - DATA_BLOCK_SIZE); //終止日期
cResponse.Cookies.Add(new HttpCookie("result", INFORMATION_SUCCESS.ToString()));
cResponse.Cookies.Add(new HttpCookie("position", lPosition.ToString()));
cResponse.Cookies.Add(new HttpCookie("count", iCount.ToString()));
cResponse.Cookies.Add(new HttpCookie("dataSize", iSize.ToString()));
cResponse.Cookies.Add(new HttpCookie("beginDate", iBeginDate.ToString()));
cResponse.Cookies.Add(new HttpCookie("endDate", iEndDate.ToString()));
Stream cOutput = cResponse.OutputStream;
cOutput.Write(bData, 0, iSize);
cOutput.Flush();
} catch {
cResponse.Cookies.Add(new HttpCookie("result", ERROR_EXCEPTION.ToString()));
}
}
}
else
{
cResponse.Cookies.Add(new HttpCookie("result", ERROR_FILE_NOT_FOUND.ToString()));
}
}