2012년 3월 2일 금요일 오후 1:59
I'm currently writing my own Custom Workflow InstanceStore for a WorkflowServiceHost, I found this sample how to implement a Custom InstanceStore:
My problem is now that I also want to load the persisted Workflows on startup and use timers. Is there any documentation or samples about that?
As far as I've come (using ILSpy on SqlWorkflowInstanceStore) I have to create a timer which perodically checks for runnable instances and call InstanceStore.SignalEvent to raise a QueryActivatableWorkflowsCommand but when I call that method my application crashes (in Debugger) after the command call is finished without a AppDomain.UnhandledException.
Have anybody experience with building a complete Custom InstanceStore?
- 편집됨 Desert_Fox 2012년 3월 2일 금요일 오후 2:00
2012년 3월 2일 금요일 오후 3:04
Ok my problem was that on a seperate thread (Catched by the Visual Studio test Application) I got the exception that the event is unknown. I've done some googling and found this microsoft code:
By some random googling I found the following .NET framework source code:
(currentEvent.Name == HasRunnableWorkflowEvent.Value.Name)
IAsyncResult result =
(Fx.IsFatal(exception) || !
"Unknown InstancePersistenceEvent ("
+ currentEvent.Name +
Means raising a HasActivatableWorkflowEvent was the wrong idea.
But still, has there anybody made already expiriences writing a custom instance wit loading persisted workflows?
- 편집됨 Desert_Fox 2012년 3월 2일 금요일 오후 3:05
2012년 3월 7일 수요일 오전 11:32
I managed to make the workflows getting loaded but I have following problem with restarting a workflow host:
When I load a persisted workflow and call a correlated operation after the LoadWorkflowByInstanceKeyCommand the workflow gets aborted but imidatly resumed again (I noticed this because I use the tracking parcipiant).
This only happens when I load the workflow using TryLoadRunnableWorkflowCommand. When start a new workflow and call the correlated operation this does not happen.
- 답변으로 표시됨 LeoTangModerator 2012년 3월 11일 일요일 오전 7:57