private static async Task <long> FlushBackend(BackupResults result, IWriteChannel <Backup.IUploadRequest> uploadtarget, Task uploader)
{
var flushReq = new Backup.FlushRequest();
// Wait for upload completion
result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_WaitForUpload);
await uploadtarget.WriteAsync(flushReq).ConfigureAwait(false);
await uploader.ConfigureAwait(false);
// Grab the size of the last uploaded volume
return(await flushReq.LastWriteSizeAsync);
}
private async Task WaitForWorkers(List <Worker> workers, FlushRequest flush)
{
while (workers.Any())
{
Task finishedTask = await Task.WhenAny(workers.Select(w => w.Task)).ConfigureAwait(false);
if (finishedTask.IsFaulted)
{
flush.TrySetCanceled();
ExceptionDispatchInfo.Capture(finishedTask.Exception).Throw();
}
Worker finishedWorker = workers.Single(w => w.Task == finishedTask);
workers.Remove(finishedWorker);
finishedWorker.Dispose();
}
}