public async Task <IActionResult> Post([FromForm] FilesUpload filesToUpload, CancellationToken cancellationToken)
{
if (filesToUpload?.Files == null)
{
return(BadRequest("No file found to upload"));
}
long size = filesToUpload.Files.Sum(f => f?.Length ?? 0);
if (size == 0)
{
return(BadRequest("No file found to upload"));
}
foreach (var formFile in filesToUpload.Files)
{
var fileTempPath = @$ "{Path.GetTempPath()}{formFile.FileName}";
using (var stream = new FileStream(fileTempPath, FileMode.Create, FileAccess.Write))
{
await formFile.CopyToAsync(stream, cancellationToken);
}
var cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
cts.CancelAfter(TimeSpan.FromSeconds(3));
try
{
var fileWritten = await _fileProcessingChannel.AddFileAsync(fileTempPath, cts.Token);
if (!fileWritten)
{
_logger.LogError($"An error occurred when processing file: {formFile.FileName}");
return(StatusCode(500, $"An error occurred when processing file: {formFile.FileName}"));
}
}
catch (OperationCanceledException) when(cts.IsCancellationRequested)
{
System.IO.File.Delete(fileTempPath);
throw;
}
}
return(Ok());
}
public async Task <IActionResult> FileUploadV2(IFormFile file, CancellationToken cancellationToken)
{
var sw = Stopwatch.StartNew();
if (file is object && file.Length > 0)
{
var fileName = Path.GetTempFileName();
using (var stream = new FileStream(fileName, FileMode.Create, FileAccess.Write))
{
await file.CopyToAsync(stream, cancellationToken);
}
var cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
cts.CancelAfter(TimeSpan.FromSeconds(3)); // wait max 3 seconds
try
{
var fileWritten = await _fileProcessingChannel.AddFileAsync(fileName, cts.Token);
if (fileWritten)
{
sw.Stop();
_logger.LogInformation($"Time for result upload was {sw.ElapsedMilliseconds}ms.");
return(RedirectToAction("UploadComplete"));
}
}
catch (OperationCanceledException) when(cts.IsCancellationRequested)
{
System.IO.File.Delete(fileName); // Delete the temp file to cleanup
}
}
return(RedirectToAction("UploadFailed"));
}