private async void DequeueTransfer()
{
//Get the next transfer in the queue
var transfer = _queued.Dequeue();
//Wait for the transfer
try
{
await Transfer(transfer);
}
catch (TransferException ex)
{
if (ex.InnerException.GetType() == typeof(IOException) &&
RequeueOnError &&
ex.Message.EndsWith("is being used by another process"))
{
transfer.State = TransferState.Requeued;
_queued.Enqueue(transfer);
}
TransferFailed.Invoke(ex);
}
catch (Exception)
{
throw;
}
if (_queued.Count > 0)
{
DequeueTransfer();
}
}
public void DequeueItem()
{
_handle = new EventWaitHandle(false, EventResetMode.ManualReset);
var test = new ObservableQueue<string>();
test.Enqueue("test");
test.ItemDequeued += Queue_ItemDequeued;
test.Dequeue();
Assert.IsTrue(_handle.WaitOne(10));
}
public void DequeueItem()
{
_handle = new EventWaitHandle(false, EventResetMode.ManualReset);
var test = new ObservableQueue <string>();
test.Enqueue("test");
test.ItemDequeued += Queue_ItemDequeued;
test.Dequeue();
Assert.IsTrue(_handle.WaitOne(10));
}
public void ShouldNotDequeueItemWhenEmpty()
{
// arrange
var target = new ObservableQueue<string>();
// act
Assert.Throws<InvalidOperationException>( () => target.Dequeue() );
// assert
}
public bool MoveNext()
{
if (_queue.Count == 0)
{
return(false);
}
Current = _queue.Dequeue();
_dequeuedItems.Add(Current);
return(true);
}
private void DequeueSolution()
{
if (_solutionQueue.Count > 0)
{
Solution completed = _solutionQueue.Dequeue();
FinishedItems.Add(completed);
Settings.Default.UnfinishedSolutionFileNames.Remove(completed.FilePath);
Settings.Default.Save();
}
}
public IMessage GetOutgoingMessage()
{
if (outgoingMessages.Count == 0)
{
return(null);
}
else
{
return(outgoingMessages.Dequeue());
}
}
public void ObserveCollectionChanged()
{
var queue = new ObservableQueue <string>();
var args = new List <NotifyCollectionChangedEventArgs>();
queue.CollectionChanged += (o, e) => args.Add(e);
queue.Enqueue("A");
args
.Should().ContainSingle()
.Which
.Should().BeEquivalentTo(
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, "A", 0)
);
args.Clear();
queue.Enqueue("B");
args
.Should().ContainSingle()
.Which
.Should().BeEquivalentTo(
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, "B", 1)
);
args.Clear();
queue.Enqueue("C");
args
.Should().ContainSingle()
.Which
.Should().BeEquivalentTo(
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, "C", 2)
);
args.Clear();
queue.Dequeue();
args
.Should().ContainSingle()
.Which
.Should().BeEquivalentTo(
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, "A", 0)
);
args.Clear();
queue.Clear();
args
.Should().ContainSingle()
.Which
.Should().BeEquivalentTo(
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)
);
}
void HandleQueue(object sender, ConnectivityChangedEventArgs e)
{
if (!e.IsConnected)
{
System.Diagnostics.Debug.WriteLine("all the calls will be redirected to the queue");
}
else
{
System.Diagnostics.Debug.WriteLine("....connection restabilished: ........pushing the changes to the server........");
while (Queue.Count > 0)
{
Queue.Dequeue(); // on dequeue() attach method for remote calls
}
}
}
public void ShouldDequeueItemWithEvents()
{
// arrange
var expected = "1";
string actual = null;
var target = new ObservableQueue<string>();
target.Enqueue( expected );
// act
Assert.PropertyChanged( target, "Count", () => actual = target.Dequeue() );
// assert
Assert.Equal( 0, target.Count );
Assert.Equal( expected, actual );
}
private void Handler_IncomingMessages()
{
while (!roomClosing)
{
if (incomingMessages.Count > 0)
{
IMessage msg = incomingMessages.Dequeue();
if (gameObjects.ContainsKey(msg.ID))
{
gameObjects[msg.ID]?.Update(msg);
}
}
else
{
Thread.Sleep(1);
}
}
}
public void DequeueItem()
{
// Arrange
var queue = new ObservableQueue <string>();
var itemOne = "One";
var itemTwo = "Two";
var itemThree = "Three";
// Act
queue.Enqueue(itemOne);
queue.Enqueue(itemTwo);
queue.Enqueue(itemThree);
// Assert
var dequeudItem = queue.Dequeue();
Assert.AreEqual(itemThree, dequeudItem, "The de-queued item was incorrect. The last item queued should have been the deqeued.");
}
public void ObservePropertyChanged()
{
var queue = new ObservableQueue <int>();
var props = new List <string>();
var itemQuery = props.Where(p => p == "Item[]");
var countQuery = props.Where(p => p == "Count");
queue.PropertyChanged += (o, e) => props.Add(e.PropertyName);
queue.Enqueue(1);
itemQuery
.Should().HaveCount(1);
countQuery
.Should().HaveCount(1);
queue.Enqueue(2);
itemQuery
.Should().HaveCount(2);
countQuery
.Should().HaveCount(2);
queue.Enqueue(3);
itemQuery
.Should().HaveCount(3);
countQuery
.Should().HaveCount(3);
queue.Dequeue();
itemQuery
.Should().HaveCount(4);
countQuery
.Should().HaveCount(4);
queue.Clear();
itemQuery
.Should().HaveCount(5);
countQuery
.Should().HaveCount(5);
}
private ISearchFactory DequeueSettings()
{
return(_searchQueue.Dequeue());
}
private void startNextEpisodeDownload(TransferPreferences useTransferPreferences = TransferPreferences.AllowCellularAndBattery)
{
if (BackgroundTransferService.Requests.Count() > 0)
{
// For some reason there are still old requests in the background transfer service.
// Let's clean everything and start over.
foreach (BackgroundTransferRequest t in BackgroundTransferService.Requests.AsEnumerable())
{
BackgroundTransferService.Remove(t);
}
}
if (m_episodeDownloadQueue.Count > 0)
{
m_currentEpisodeDownload = m_episodeDownloadQueue.Peek();
Uri downloadUri;
try
{
downloadUri = new Uri(m_currentEpisodeDownload.EpisodeDownloadUri, UriKind.Absolute);
}
catch (Exception e)
{
App.showErrorToast("Cannot download the episode.");
Debug.WriteLine("Cannot download the episode. URI exception: " + e.Message);
m_currentEpisodeDownload.EpisodeDownloadState = PodcastEpisodeModel.EpisodeDownloadStateEnum.Idle;
m_episodeDownloadQueue.Dequeue();
saveEpisodeInfoToDB(m_currentEpisodeDownload);
startNextEpisodeDownload();
return;
}
m_currentEpisodeDownload.EpisodeFile = generateLocalEpisodeFileName(m_currentEpisodeDownload);
if (string.IsNullOrEmpty(m_currentEpisodeDownload.EpisodeFile))
{
App.showErrorToast("Cannot download the episode.");
Debug.WriteLine("Cannot download the episode. Episode file name is null or empty.");
m_currentEpisodeDownload.EpisodeDownloadState = PodcastEpisodeModel.EpisodeDownloadStateEnum.Idle;
m_episodeDownloadQueue.Dequeue();
saveEpisodeInfoToDB(m_currentEpisodeDownload);
startNextEpisodeDownload();
return;
}
// Create a new background transfer request for the podcast episode download.
m_currentBackgroundTransfer = new BackgroundTransferRequest(downloadUri,
new Uri(m_currentEpisodeDownload.EpisodeFile, UriKind.Relative));
if (useTransferPreferences == TransferPreferences.None)
{
m_currentBackgroundTransfer.TransferPreferences = TransferPreferences.None;
}
else if (canAllowCellularDownload(m_currentEpisodeDownload))
{
bool settingsAllowCellular = false;
using (var db = new PodcastSqlModel())
{
settingsAllowCellular = db.settings().IsUseCellularData;
}
Debug.WriteLine("Settings: Allow cellular download: " + settingsAllowCellular);
if (settingsAllowCellular && canDownloadOverCellular())
{
m_currentBackgroundTransfer.TransferPreferences = TransferPreferences.AllowCellularAndBattery;
}
else
{
m_currentBackgroundTransfer.TransferPreferences = TransferPreferences.AllowBattery;
}
}
else
{
m_currentBackgroundTransfer.TransferPreferences = TransferPreferences.None;
}
Debug.WriteLine("m_currentBackgroundTransfer.TransferPreferences = " + m_currentBackgroundTransfer.TransferPreferences.ToString());
m_currentBackgroundTransfer.TransferStatusChanged += new EventHandler <BackgroundTransferEventArgs>(backgroundTransferStatusChanged);
// Store request to the episode.
m_currentEpisodeDownload.DownloadRequest = m_currentBackgroundTransfer;
m_applicationSettings.Remove(App.LSKEY_PODCAST_EPISODE_DOWNLOADING_ID);
m_applicationSettings.Add(App.LSKEY_PODCAST_EPISODE_DOWNLOADING_ID, m_currentEpisodeDownload.EpisodeId);
m_applicationSettings.Save();
try
{
BackgroundTransferService.Add(m_currentBackgroundTransfer);
}
catch (InvalidOperationException)
{
foreach (BackgroundTransferRequest r in BackgroundTransferService.Requests)
{
BackgroundTransferService.Remove(r);
}
BackgroundTransferService.Add(m_currentBackgroundTransfer);
}
}
}
