private async Task <ObjectModel> UploadAsync(string dataPath, CancellationToken ct)
{
string uid = Guid.NewGuid().ToString();
string filename = Path.GetFileName(dataPath);
using (FileStream stream = new FileStream(dataPath, FileMode.Open))
{
long chunkLength = 1048576;
if (stream.Length < chunkLength)
{
chunkLength = stream.Length;
}
long totalChunks = stream.Length / chunkLength;
byte[] chunk = new byte[chunkLength];
int chunkNumber = 1;
int maximumNumberOfBytesToRead = chunk.Length;
while (stream.Read(chunk, 0, maximumNumberOfBytesToRead) > 0)
{
using (MemoryStream chunkStream = new MemoryStream(chunk))
{
await uploader.UploadAsync(Convert.ToInt32(totalChunks), chunkNumber, uid, chunkStream, ct);
}
long numberOfBytesToReadLeft = stream.Length - stream.Position;
if (numberOfBytesToReadLeft < maximumNumberOfBytesToRead)
{
maximumNumberOfBytesToRead = (int)numberOfBytesToReadLeft;
chunk = new byte[maximumNumberOfBytesToRead];
}
chunkNumber++;
}
}
return(await uploader.CommitAsync(filename, filename, uid, ct));
}
public async Task <IActionResult> UploadAsync(
IFormFile file,
int chunkNumber,
int totalSize,
string uid,
string filename,
string relativePath,
int totalChunks)
{
try
{
if (!Guid.TryParse(uid, out Guid parsedUid))
{
throw new ArgumentException("The provided unique identifier is not valid.");
}
ThreadThrottler throttler = new ThreadThrottler();
CancellationTokenSource cts = CancellationTokenSource.CreateLinkedTokenSource(
HttpContext?.RequestAborted ?? default(CancellationToken));
var chunkResult = await uploader.UploadAsync(totalChunks, chunkNumber, uid, file.OpenReadStream(), cts.Token);
if (ApiConfiguration?.Options?.EnableRateLimiting ?? false)
{
// Ensure current request lasts at least 500 milliseconds
throttler.Throttle(500);
}
if (chunkResult != null && chunkResult.IsCompleted)
{
var result = await uploader.CommitAsync(filename, relativePath, uid, cts.Token);
return(CreatedAtAction(nameof(GetById), new { id = result.Id }, result));
}
else
{
return(Content(string.Empty));
}
}
catch (ArgumentException e)
{
Response.StatusCode = (int)HttpStatusCode.BadRequest;
return(Content(e.Message));
}
catch (Exception e)
{
Response.StatusCode = (int)HttpStatusCode.InternalServerError;
return(Content(e.Message));
}
}
public async Task <IActionResult> UploadAsync(
IFormFile file,
int chunkNumber,
int totalSize,
string uid,
string filename,
string relativePath,
int totalChunks)
{
try
{
if (!Guid.TryParse(uid, out Guid parsedUid))
{
throw new ArgumentException("The provided unique identifier is not valid.");
}
var chunkResult = await uploader.UploadAsync(totalChunks, chunkNumber, uid, file.OpenReadStream(), CancellationToken);
if (chunkResult != null && chunkResult.IsCompleted)
{
var result = await uploader.CommitAsync(filename, relativePath, uid, CancellationToken);
return(CreatedAtAction(nameof(GetById), new { id = result.Id }, result));
}
else
{
return(Content(string.Empty));
}
}
catch (ArgumentException e)
{
Response.StatusCode = (int)HttpStatusCode.BadRequest;
return(Content(e.Message));
}
catch (Exception e)
{
Response.StatusCode = (int)HttpStatusCode.InternalServerError;
return(Content(e.Message));
}
}