protected virtual void QueryStorage()
{
_lastQueryTimeUtc = DateTime.UtcNow;
_isLastQueryMaxItemsReceived = false;
Stopwatch storageQueryTimer = Stopwatch.StartNew();
List <SignalEvent <TKey> > items = null;
try
{
items = _eventQueries
.Find(ItemsQueryCount, MaxFailedAttempts)
.Result;
}
catch (Exception ex)
{
items = new List <SignalEvent <TKey> >();
_logger.LogError(ex, SenderInternalMessages.DatabaseEventProvider_DatabaseError);
}
_monitor.EventPersistentStorageQueried(storageQueryTimer.Elapsed, items);
_isLastQueryMaxItemsReceived = items.Count == ItemsQueryCount;
if (_changeNotifier != null && _isLastQueryMaxItemsReceived == false)
{
_changeNotifier.StartMonitor();
}
_eventQueue.Append(items, true);
}