private void Flush()
{
if (_flushing)
{
return;
}
if (!_app.IsConnected())
{
return;
}
lock (_lock) {
try {
_flushing = true;
var start = _app.TimeService.ElapsedMilliseconds;
var list = DequeuAll();
if (list.Count == 0)
{
return;
}
//fire event
Saving?.Invoke(this, new BackgroundSaveEventArgs(list));
var session = (EntitySession)_app.OpenSystemSession();
session.LogDisabled = true; //do not log operations; what we save are log entries themselves most of the time
if (list.Count > 0)
{
var byHandler = list.GroupBy(o => GetHandler(o));
foreach (var group in byHandler)
{
var handler = group.Key;
if (handler == null)
{
continue;
}
handler.SaveObjects(session, group.ToList());
}
}
//Get stats
var recCount = session.GetChangeCount();
var startSaving = _app.TimeService.ElapsedMilliseconds;
session.SaveChanges();
var endSaving = _app.TimeService.ElapsedMilliseconds;
//log stats
if (_operationLog != null && OkToLogStatsMessage(list))
{
var logEntry = new Logging.InfoLogEntry(session.Context, "Background save completed, records: {0}, save time: {1} ms, total time: {2} ms.",
recCount, (endSaving - startSaving), (endSaving - start));
_operationLog.Log(logEntry);
}
} catch (Exception ex) {
//System.Diagnostics.Debugger.Break();
_errorLog.LogError(ex);
} finally {
_flushing = false;
}
}
}//method