private static void DoDownloadHistoricalData(IEnumerable <string> stockList,
int numYears, CSVOutputSettings outputSettings,
Action <string> BeforeDownload, Action <string> AfterDownload, Action <Exception> ExceptionCallback)
{
// initialize parameters
HistoricalDownloadParams downloadParams = new HistoricalDownloadParams();
downloadParams.stockList = stockList;
downloadParams.NumYears = numYears;
downloadParams.OutputSettings = outputSettings.Clone() as CSVOutputSettings;
downloadParams.BeforeStockDataDownloadCallback = BeforeDownload;
downloadParams.AfterStockDataDownloadCallback = AfterDownload;
downloadParams.OnExceptionCallback = ExceptionCallback;
// start the thread
DownloadWorker worker = new DownloadWorker();
Thread t = new Thread(worker.DownloadStockHistoryData);
Variables.threadList.Add(t);
t.Start(downloadParams);
//worker.DownloadStockHistoryData(downloadParams);
}
public void DownloadStockHistoryData(object downloadParams)
{
HistoricalDownloadParams _downloadParams = downloadParams as HistoricalDownloadParams;
IEnumerable <string> stocks = _downloadParams.stockList as IEnumerable <string>;
string downloadStr;
int numYears = _downloadParams.NumYears;
CSVOutputSettings outputSettings = _downloadParams.OutputSettings;
Dictionary <string, string> indexDict = new Dictionary <string, string>();
indexDict.Add("^PSEi", "PSE");
indexDict.Add("^ALLSHARES", "ALL");
indexDict.Add("^FINANCIAL", "FIN");
indexDict.Add("^INDUSTRIAL", "IND");
indexDict.Add("^HOLDING", "HDG");
indexDict.Add("^PROPERTY", "PRO");
indexDict.Add("^SERVICE", "SVC");
indexDict.Add("^MINING-OIL", "M-O");
try
{
foreach (string symbol in stocks)
{
string tmpSymbol = symbol;
if (tmpSymbol.Contains("^"))
{
tmpSymbol = indexDict[symbol];
downloadStr = "http://www2.pse.com.ph/servlet/ChartForPhisixServlet?indexID=%s&years=%f";
}
else
{
downloadStr = "http://www2.pse.com.ph/servlet/PSEChartServlet?securitySymbol=%s&years=%f";
}
downloadStr = downloadStr.Replace("%s", tmpSymbol).Replace("%f", numYears.ToString());
outputSettings.Filename = symbol + ".csv";
// before download callback
if (_downloadParams.BeforeStockDataDownloadCallback != null)
{
_downloadParams.BeforeStockDataDownloadCallback(symbol);
}
HistoricalDataDownloader downloader = new HistoricalDataDownloader(new Uri(downloadStr));
downloader.Download();
HistoricalDataReader reader = downloader.GetReader(symbol);
lock (DownloadWorker.threadLock)
{
reader.ToCSV(outputSettings);
Variables.DownloadedCount++;
// after download
if (_downloadParams.AfterStockDataDownloadCallback != null)
{
_downloadParams.AfterStockDataDownloadCallback(symbol);
}
}
}
}
catch (Exception e)
{
//throw new Exception(e.Message);
if (_downloadParams.OnExceptionCallback != null)
{
_downloadParams.OnExceptionCallback(e);
}
// abort threads
foreach (Thread t in Variables.threadList)
{
if (t.IsAlive)
{
t.Abort();
}
}
}
}
public static void DownloadAndConvertHistoricalData(object downloadParams)
{
Variables.DownloadedCount = 0; // track downloads
Variables.threadList.Clear();
HistoricalDownloadParams _downloadParams = downloadParams as HistoricalDownloadParams;
if (_downloadParams.StartDownloadProcess != null)
{
_downloadParams.StartDownloadProcess();
}
List <string> tmpList = new List <string>();
tmpList.AddRange(_downloadParams.stockList.ToArray());
const int NUM_THREADS = 5;
int stockCount = tmpList.Count;
int threadCount = stockCount / NUM_THREADS;
if (threadCount == 0)
{
threadCount = 1;
}
int startIndex = 0;
int adder = 0;
for (int i = 0; i < threadCount; i++)
{
// add the remainder of the stocks in the list
if (threadCount == i + 1)
{
adder = stockCount % NUM_THREADS;
}
int downloadItemCount = (stockCount >= NUM_THREADS) ? NUM_THREADS + adder : adder;
// take the items
List <string> l = new List <string>();
l.AddRange(tmpList.Take(downloadItemCount).ToArray());
DoDownloadHistoricalData(l, _downloadParams.NumYears, _downloadParams.OutputSettings,
_downloadParams.BeforeStockDataDownloadCallback, _downloadParams.AfterStockDataDownloadCallback,
_downloadParams.OnExceptionCallback);
// remove added items
tmpList.RemoveRange(startIndex, downloadItemCount);
}
// wait for everything to complete
while (true)
{
int count = (from t in Variables.threadList
where t.IsAlive == true
select t).Count();
if (count == 0)
{
if (_downloadParams.DownloadAllCompleteCallback != null)
{
_downloadParams.DownloadAllCompleteCallback();
}
break;
}
}
}
