private static void QueueEvent(Event evt)
{
LineEvent lineEvent = new LineEvent(evt);
EmailProcessingThread.Push(() =>
{
if (!RecentLineEvents.Any())
{
QueryRecentLineEvents();
}
List <LineEvent> overlappingLineEvents = QueuedLineEvents
.Where(queuedLineEvent => lineEvent.Overlaps(queuedLineEvent))
.ToList();
if (overlappingLineEvents.Any())
{
QueuedLineEvents.ExceptWith(overlappingLineEvents);
lineEvent = overlappingLineEvents.Aggregate(lineEvent, (mergedLineEvent, queuedLineEvent) => mergedLineEvent.Merge(queuedLineEvent));
}
else
{
DateTime twoDaysAgo = DateTime.UtcNow.AddDays(-2.0D);
if (lineEvent.TimeRange.End > twoDaysAgo)
{
lineEvent = MergeWithRecentLineEvents(lineEvent);
}
if (lineEvent.TimeRange.Start < twoDaysAgo)
{
lineEvent = MergeWithDatabase(lineEvent);
}
}
if (!QueueLineEvent(lineEvent))
{
GenerateEmail(lineEvent);
}
});
}
private static void QueryRecentLineEvents()
{
using (AdoDataConnection connection = s_connectionFactory())
{
TableOperations <Event> eventTable = new TableOperations <Event>(connection);
DateTime twoDaysAgo = DateTime.UtcNow.AddDays(-2.0D);
object twoDaysAgo2 = ToDateTime2(connection, twoDaysAgo);
List <Event> recentEvents = eventTable.QueryRecordsWhere("EndTime >= {0}", twoDaysAgo2).ToList();
foreach (IGrouping <int, Event> grouping in recentEvents.GroupBy(evt => evt.LineID))
{
LineEvent mergedLineEvent = null;
foreach (Event evt in grouping)
{
LineEvent lineEvent = new LineEvent(evt);
if ((object)mergedLineEvent == null)
{
mergedLineEvent = lineEvent;
}
if (!mergedLineEvent.Overlaps(lineEvent))
{
RecentLineEvents.Add(mergedLineEvent);
mergedLineEvent = lineEvent;
}
mergedLineEvent = mergedLineEvent.Merge(lineEvent);
}
RecentLineEvents.Add(mergedLineEvent);
}
}
PurgeOldLineEventsAction.DelayAndExecute(PurgeInterval);
}