public async Task <IActionResult> ReturnDownloadActionResultAsync(Guid id, HttpResponse response)
{
var doc = await _dataContext.Documents.Where(x => x.ID == id).Select(x => new { x.MimeType, x.FileName, x.Length }).FirstOrDefaultAsync();
if (doc == null)
{
_logger.LogError("Did not find the requested document in the database for the ID {0}.", id.ToString("D"));
return(new NotFoundResult());
}
_logger.LogDebug("Setting up the Response with Attachment for ID {0}.", id.ToString("D"));
response.ContentType = "application/octet-stream";
response.ContentLength = doc.Length;
var cd = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment")
{
FileName = doc.FileName,
Size = doc.Length
};
response.Headers.Add("Content-Disposition", cd.ToString());
var client = new DataLakeAPI(_config);
var files = await client.ListFiles(id.ToString("D"));
for (int i = 0; i < files.Count(); i++)
{
var file = await client.GetFile(string.Format("{0}_{1}.part", id, i));
await file.CopyToAsync(response.Body);
}
return(new OkResult());
}
public async Task FinalizeUploadAsync()
{
for (int i = 0; i < _doc.ChunkCount; i++)
{
var client = new DataLakeAPI(_config);
await client.MoveFile(string.Format("{0}_{1}.TMP", MetaData.UploadUid, i), string.Format("{0}_{1}.part", _doc.ID, i));
_logger.LogDebug(string.Format("File {0}_{1}.TMP renamed to {2}_{1}.part", MetaData.UploadUid, i, _doc.ID));
}
}
public async Task DeleteFileChunksAsync(Guid id)
{
var chunkCount = await _dataContext.Documents.Where(x => x.ID == id).Select(x => x.ChunkCount).FirstOrDefaultAsync();
for (int i = 0; i < chunkCount; i++)
{
var client = new DataLakeAPI(_config);
await client.DeleteFile(string.Format("{0}_{1}.part", id, i));
_logger.LogDebug("Successfully Deleted the file chunk {0}.", string.Format("{0}_{1}.part", id, i));
}
}
public async Task WriteToStreamAsync(IFormFile file, HttpRequest request, User identityUser)
{
MetaData = Newtonsoft.Json.JsonConvert.DeserializeObject <ChunkMetaData>(request.Form["metadata"]);
_filename = MetaData.FileName;
if (MetaData.TotalChunks - 1 <= MetaData.ChunkIndex)
{
if (!string.IsNullOrWhiteSpace(request.Form["ItemID"]))
{
Guid.TryParse(request.Form["ItemID"], out _itemID);
}
}
_identityUser = identityUser;
var client = new DataLakeAPI(_config);
await client.CreateFile(GetLocalFileName());
await client.UploadBytes(GetLocalFileName(), file.OpenReadStream());
await client.FlushBytes(GetLocalFileName(), file.Length);
_logger.LogDebug("Uploaded the Chunks to Azure for file {0}.", GetLocalFileName());
}