Asynchronous processing and enabling/disabling command


There are processing functions in YalvLib
  • Filter functions (File checkboxes, Message Level, and column filters)
  • Load/Export to Yalv
that are executed in the input thread. These functions are not working at an optimum since the input thread is scheduled differently then a background task. The user experience is bad because one does not get a feedback when a processing is finished. Cancelling a process is impossible for the above reasons. We should implement a background processing (Task based) concept to enable an improved user experience.


gwentreb wrote Jun 20, 2013 at 7:23 AM

I've implementend the async processing for the export. Gonna make it for the other process

gwentreb wrote Jun 20, 2013 at 3:40 PM

I've modified the method in the LogFileLoader (I think we can rename it into something like AsynchronousExecutionManager ?)

Now if we want a method to be asynchronous, we just have to call the method ExecuteAsynchronously with the given function in parameters)

I hope I made it the right way. I think I did. Tell me if you feel like I did it wrong.

I made test with a log file > 10mo, it still run swiftly so far

dirkster wrote Jun 23, 2013 at 1:46 PM

I think the extension is OK - I looked at it with the current Master branch and found that:
  • File>Open File works (apart from a separate bug about the line number that I reported separately)
  • File> Export Session to SQLLite works also, although, there is a Windows Explorer file coming up when the task finishes - is that on purpose, do we need that?
  • File > Open Log Analysis Session fails.
    Issue: The task never finishes and cannot be cancelled - I have to exit the program.
It looks like something has been forgotten when I look into the YalvViewModel.cs code :
public void LoadLogAnalysisSession(string path)
    _fileLoader = new LogFileLoader();
    _fileLoader.LoadResultEvent += fileLoader_loadResultEvent;
    ManageRepositoriesViewModel.IsLoading = true;
   /* _fileLoader.LoadFile(ManageRepositoryViewModel.LoadFiles,
                        new List<string> {path}, EntriesProviderType.Yalv, ManageRepositoriesViewModel, true);*/

gwentreb wrote Jun 24, 2013 at 9:15 AM

If you are talking about the unregistering for the fileLoadResultEvent, it is made in the fileLoader_loadResultEvent method ( is this a not recommended way of handling events?)

For the Windows Explorer, yes, I've add this. I was thinking that if someone export his workspace he may want to have a windows explorer popping up to allow him moving, archiving the file. Normally you don't export workspace that often. Maybe it can be an option?

gwentreb wrote Jun 24, 2013 at 9:20 AM

Open Log Analysis Session fails.
Issue: The task never finishes and cannot be cancelled - I have to exit the program.

I had commented the line loading the file... And forgot to remove it.. sorry :(