private void PollEmptyAdapters()
{
if ((ExecutionPathDebugLog.IsDebugEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".pollEmptyAdapters emptyAdapters.size==" + _emptyAdapters.Count);
}
var tempList = new List <CoordinatedAdapter>();
foreach (var adapter in _emptyAdapters)
{
if (adapter.State == AdapterState.DESTROYED)
{
tempList.Add(adapter);
continue;
}
var _event = adapter.Read();
if (_event != null)
{
EventsToSend.Add(_event);
_eventsFromAdapters[_event] = adapter;
}
}
foreach (var adapter in tempList)
{
_emptyAdapters.Remove(adapter);
}
}
/// <summary>
/// Remove the first member of eventsToSend. If there is another record in the CSV file,
/// insert the event created from it into eventsToSend.
/// </summary>
protected override void ReplaceFirstEventToSend()
{
EventsToSend.Remove(EventsToSend.First());
var _event = Read();
if (_event != null)
{
EventsToSend.Add(_event);
}
}
/// <summary>
/// Replace the first member of eventsToSend with the next
/// event returned by the read() method of the same Adapter that
/// provided the first event.
/// </summary>
protected override void ReplaceFirstEventToSend()
{
if ((ExecutionPathDebugLog.IsDebugEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".ReplaceFirstEventToSend Replacing event");
}
var _event = EventsToSend.First();
EventsToSend.Remove(_event);
AddNewEvent(_eventsFromAdapters.Get(_event));
_eventsFromAdapters.Remove(_event);
PollEmptyAdapters();
}
private void AddNewEvent(CoordinatedAdapter adapter)
{
if ((ExecutionPathDebugLog.IsDebugEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".addNewEvent eventsFromAdapters==" + _eventsFromAdapters);
}
var _event = adapter.Read();
if (_event != null)
{
if ((ExecutionPathDebugLog.IsDebugEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".addNewEvent event==" + _event);
}
EventsToSend.Add(_event);
_eventsFromAdapters[_event] = adapter;
}
else
{
if (adapter.State == AdapterState.DESTROYED)
{
var keyList = new LinkedList <SendableEvent>();
foreach (var entry in _eventsFromAdapters)
{
if (entry.Value == adapter)
{
keyList.AddFirst(entry.Key);
}
}
foreach (var keyEvent in keyList)
{
_eventsFromAdapters.Remove(keyEvent);
}
}
else
{
_emptyAdapters.Add(adapter);
}
}
}
public override SendableEvent Read()
{
if (StateManager.State == AdapterState.DESTROYED || _atEof)
{
return(null);
}
try
{
if (EventsToSend.IsEmpty())
{
if (_beanType != null)
{
return(new SendableBeanEvent(NewMapEvent(), _beanType, _eventTypeName, _totalDelay, ScheduleSlot));
}
return(new SendableMapEvent(NewMapEvent(), _eventTypeName, _totalDelay, ScheduleSlot));
}
var theEvent = EventsToSend.First();
EventsToSend.Remove(theEvent);
return(theEvent);
}
catch (EndOfStreamException)
{
if ((ExecutionPathDebugLog.IsDebugEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".read reached end of CSV file");
}
_atEof = true;
if (StateManager.State == AdapterState.STARTED)
{
Stop();
}
else
{
Destroy();
}
return(null);
}
}
/// <summary>
///@see com.espertech.esper.adapter.ReadableAdapter#read()
/// </summary>
public override SendableEvent Read()
{
if ((ExecutionPathDebugLog.IsDebugEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".read");
}
PollEmptyAdapters();
var isEventsToSendEmpty = EventsToSend.IsEmpty();
var isEventsFromAdaptersEmpty = _eventsFromAdapters.IsEmpty();
var isEmptyAdaptersEmpty = _emptyAdapters.IsEmpty();
if ((ExecutionPathDebugLog.IsDebugEnabled) && (Log.IsDebugEnabled))
{
Log.Debug(".read eventsToSend.isEmpty==" + isEventsToSendEmpty);
Log.Debug(".read eventsFromAdapters.isEmpty==" + isEventsFromAdaptersEmpty);
Log.Debug(".read emptyAdapters.isEmpty==" + isEmptyAdaptersEmpty);
}
if (isEventsToSendEmpty && isEventsFromAdaptersEmpty && isEmptyAdaptersEmpty)
{
Stop();
}
if (StateManager.State == AdapterState.DESTROYED || isEventsToSendEmpty)
{
return(null);
}
var result = EventsToSend.First();
ReplaceFirstEventToSend();
return(result);
}
