private async Task <bool> UpdateSingleItem(IGrouping <string, Tuple <UpdateInfo, UpdateItem> > task)
{
var firstItem = task.First().Item2;
var itemSize = firstItem.GetDownloadSize();
var lastTimestamp = DateTime.UtcNow;
var lastDownloadedKBytes = 0l;
var progress = new Progress <double>(thisPercent =>
{
var timeNow = DateTime.UtcNow;
var secondsSinceLastUpdate = (timeNow - lastTimestamp).TotalSeconds;
if (secondsSinceLastUpdate < 1 && thisPercent < 100)
{
return;
}
//This item: 70% done (1MB / 20MB)
//Overall: 50% done (111MB / 1221MB)
//Speed: 1234KB/s (average 1111KB/s)
var downloadedKBytes = (long)(itemSize.GetRawSize() * (thisPercent / 100d));
var downloadedSize = FileSize.FromKilobytes(downloadedKBytes);
var totalDownloadedSize = _completedSize + downloadedSize;
var totalPercent = ((double)totalDownloadedSize.GetRawSize() / (double)_overallSize.GetRawSize()) * 100d;
var speed = (downloadedKBytes - lastDownloadedKBytes) / secondsSinceLastUpdate;
if (double.IsNaN(speed))
{
speed = 0;
}
lastDownloadedKBytes = downloadedKBytes;
lastTimestamp = timeNow;
labelPercent.Text =
$@"This item: {thisPercent:F1}% done ({downloadedSize} / {itemSize})
Overall: {totalPercent:F1}% done ({totalDownloadedSize} / {_overallSize})
Speed: {speed:F1}KB/s";
progressBar1.Value = Math.Min((int)(totalPercent * 10), progressBar1.Maximum);
});
SetStatus($"Updating {firstItem.TargetPath.Name}");
SetStatus($"Updating {InstallDirectoryHelper.GetRelativePath(firstItem.TargetPath)}", false, true);
var sourcesToAttempt = task.Where(x => !_badUpdateSources.Contains(x.Item1)).OrderBy(x => GetPing(x.Item1)).ToList();
if (sourcesToAttempt.Count == 0)
{
Console.WriteLine("There are no working sources to download from. Check the log for reasons why the sources failed.");
_failedItems.Add(task);
return(false);
}
Exception ex = null;
foreach (var source in sourcesToAttempt)
{
try
{
// Needed because ZipUpdater doesn't support progress
if (source.Item2.RemoteFile is ZipUpdater.ArchiveItem)
{
labelPercent.Text = $"Extracting... Overall progress: {_completedSize} / {_overallSize}.";
}
await RetryHelper.RetryOnExceptionAsync(() => source.Item2.Update(progress, _cancelToken.Token), 3,
TimeSpan.FromSeconds(3), _cancelToken.Token);
_completedSize += source.Item2.GetDownloadSize();
ex = null;
break;
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception e)
{
Console.WriteLine($"Marking source {source.Item1.Source.Origin} as broken because of exception: {e.ToStringDemystified()}");
ex = e;
_badUpdateSources.Add(source.Item1);
}
}
// Check if all sources failed
if (ex != null)
{
Console.WriteLine("There are no working sources to download from. Check the log for reasons why the sources failed.");
_failedItems.Add(task);
_failedExceptions.Add(ex);
return(false);
}
return(true);
}