Exemple #1
0
        /// <summary>
        /// Run the background tagger.
        /// </summary>
        /// <returns></returns>
        public Task Run()
        {
            TaskFactory       tf     = new TaskFactory(TaskCreationOptions.LongRunning, TaskContinuationOptions.None);
            CancellationToken cancel = _cancel.Token;

            return(tf.StartNew(() =>
            {
                TraceLogger.Log(TraceCategory.Info(), "Background tagging service started");
                try
                {
                    OneNotePageProxy lastPage = null;
                    while (!_jobs.IsCompleted)
                    {
                        TaggingJob j = _jobs.Take();
                        cancel.ThrowIfCancellationRequested();
                        try
                        {
                            lastPage = j.Execute(_onenote, lastPage);
                            if (lastPage != null && _jobs.Count == 0)
                            { // no more pending pages - must update the last one and stop carrying forward
                                lastPage.Update();
                                lastPage = null;
                            }
                        }
                        catch (Exception e)
                        {
                            lastPage = null;
                            TraceLogger.ShowGenericErrorBox("page tagging failed", e);
                        }
                    }
                }
                catch (InvalidOperationException)
                {
                    TraceLogger.Log(TraceCategory.Warning(), "Background tagging job queue depleted");
                    TraceLogger.Flush();
                }
                catch (OperationCanceledException)
                {
                    TraceLogger.Log(TraceCategory.Warning(), "Background tagging canceled");
                    TraceLogger.Flush();
                }
            }, cancel));
        }
Exemple #2
0
 /// <summary>
 /// Schedule a tagging job for background operation.
 /// </summary>
 /// <param name="job">Tagging job descriptor</param>
 public void Add(TaggingJob job)
 {
     _jobs.Add(job);
 }