/// <summary>
/// Run the history import, one chunk at a time if necessary
/// </summary>
private void RunHistoryImport()
{
using (ETCMDataContext context = new ETCMDataContext())
{
DateTime? lastImport = null;
DateTime now, historyStart, historyEnd;
do
{
now = DateTime.Now;
// Get the last import time
ETCMProperty lastImportProp = (from e in context.ETCMProperties
where e.PropertyName == LAST_IMPORT_PROPERTY
select e).SingleOrDefault();
if (lastImportProp != null)
lastImport = DateTime.Parse(lastImportProp.PropertyValue); ;
// Determine the start time of the history query
historyStart = lastImport ?? PTExporter.PT_CREATED_DATE;
// Determine the end time of the history query
historyEnd = now;
if (now - historyStart > PTExporter.MAX_HISTORY)
{
logger.Debug("The history from " + historyStart.ToString() + " to " + now + " is too long, limiting.");
historyEnd = historyStart.Add(PTExporter.MAX_HISTORY);
}
logger.Info("Importing history from timeframe (" + historyStart.ToString() + " - " + historyEnd.ToString() + ").");
// Run the export, and if there is history to export, import it
if (exporter.Run(historyStart, historyEnd))
importer.Run();
// Update the last import time
if (lastImportProp == null)
{
lastImportProp = new ETCMProperty();
context.ETCMProperties.InsertOnSubmit(lastImportProp);
}
lastImportProp.PropertyValue = historyEnd.ToString();
context.SubmitChanges();
} while (historyEnd < now);
}
}
partial void UpdateETCMProperty(ETCMProperty instance);
partial void DeleteETCMProperty(ETCMProperty instance);
partial void InsertETCMProperty(ETCMProperty instance);