public UploadFileChunksTask(UploadInfo file, IUploadProgressReporter progressReporter, CancellationToken token, IApiHelper apiHelper)
: base(apiHelper)
{
_file = file;
_filePath = file.FilePath;
_fileSize = file.FileSize;
_progressReporter = progressReporter;
_token = token;
_deckCloudFileResponse = file.DeckCloudFileResponse;
}
public UploadFileChunksTask(string filePath, long fileSize, DeckCloudFileResponse response, CancellationToken token, IApiHelper apiHelper)
: base(apiHelper)
{
_file = null;
_filePath = filePath;
_fileSize = fileSize;
_progressReporter = null;
_token = token;
_deckCloudFileResponse = response;
}
public void Restart()
{
Stage = AttachmentStage.Pending;
CurrentChunk = 0;
UploadedBytes = 0;
DeckCloudFileResponse = null;
DeckVersionResponse = null;
Status = AttachmentStatus.Pending;
DownloadLink = null;
}
public void FinishChunking(DeckCloudFileResponse initiateChunkingResponse)
{
if (string.IsNullOrEmpty(_deviceToken))
{
throw new Exception("Device token is blank.");
}
// Finishing file chunk uploading.
Logger.LogDebug("Finishing file chunk uploading.");
string uri = string.Format("{0}/cloud_files/{1}.xml", m_hostServer, initiateChunkingResponse.FileDataId);
var parameters = new List<NamedData>
{
new NamedData("complete_multipart", "true"),
new NamedData("multipart_upload_id", initiateChunkingResponse.UploadId)
};
// Specify a schema to ensure the response is as expected.
string xmlSchema = Resources.DeckCloudFileXmlSchema;
DataSet dset = MultipartFormDataPut(uri, parameters, xmlSchema);
var finishChunkingResponse = new DeckCloudFileResponse(dset, DeckCloudFileResponse.RequestType.FinishChunking);
if (finishChunkingResponse.FileDataId != initiateChunkingResponse.FileDataId)
{
throw new InvalidResponseException("The finish chunking response \"file data ID\" does not match the initiate chunking response.");
}
}
public int UploadChunk(FileStream file, DeckCloudFileResponse deckResponse, long? position = null)
{
try
{
// Upload a file chunk.
Logger.LogDebug("Upload a file chunk.");
// Reposition file stream to chunk position if provided
if (position.HasValue)
{
file.Position = position.Value;
}
// Read from the file into a buffer. It's either the full chunk size or the last chunk's remaining size.
long remainingBytesLength = file.Length - file.Position;
int chunkSize = (remainingBytesLength < FILE_UPLOAD_CHUNK_SIZE) ? (int) remainingBytesLength : FILE_UPLOAD_CHUNK_SIZE;
Logger.LogInfo(string.Format("Read {0} bytes from the file into a buffer.", chunkSize));
file.Read(m_buffer, 0, chunkSize);
// Creating HTTP web request to Amazon Web Services (AWS).
Logger.LogDebug("Creating HTTP web request.");
var request = CreateWebRequest(deckResponse.DeckCloudUploadInfo.Action);
request.Method = WebRequestMethods.Http.Put;
request.ContentType = deckResponse.DeckCloudUploadInfo.ContentType;
request.AllowAutoRedirect = false;
request.AllowWriteStreamBuffering = true;
request.ContentLength = chunkSize;
// Add headers specific to AWS.
request.Headers.Add("authorization", deckResponse.DeckCloudUploadInfo.Authorization);
request.Headers.Add("x-amz-date", deckResponse.DeckCloudUploadInfo.XAmzDate);
// Get request stream.
Logger.LogDebug("Getting request stream.");
using (Stream requestStream = request.GetRequestStream())
{
// Writing to request stream.
Logger.LogDebug("Writing to request stream.");
requestStream.Write(m_buffer, 0, chunkSize);
}
// The schema here is null because the AWS web service call just responds
// with an OK when successful and there is no XML data returned.
CompleteMultipartFormData(false, null, request);
return chunkSize;
}
finally
{
Array.Clear(m_buffer, 0, m_buffer.Length);
}
}
public DeckCloudFileResponse RequestChunkParameters(DeckCloudFileResponse initiateChunkingResponse, long partNumber)
{
// Request file chunk parameters.
Logger.LogDebug("Request file chunk parameters.");
string uri = string.Format("{0}/cloud_files/{1}.xml", m_hostServer, initiateChunkingResponse.FileDataId);
var parameters = new List<NamedData>
{
new NamedData("multipart_upload_id", initiateChunkingResponse.UploadId),
new NamedData("part_number", partNumber)
};
// Specify a schema to ensure the response is as expected.
string xmlSchema = Resources.DeckCloudFileXmlSchema;
DataSet dset = MultipartFormDataGet(uri, parameters, true, false, xmlSchema);
return new DeckCloudFileResponse(dset, DeckCloudFileResponse.RequestType.RequestChunk);
}
public void UploadFileChunks(Action<long, double> callbackIncrementProgress, string filePath, DeckCloudFileResponse initiateChunkingResponse)
{
if (string.IsNullOrEmpty(_deviceToken))
{
throw new Exception("Device token is blank.");
}
Logger.LogDebug(string.Format("Opening file \"{0}\" to be uploaded in chunks.", filePath));
// Open the file as a stream.
using (FileStream file = File.OpenRead(filePath))
{
// Determine how many chunks will need to be sent.
long totalChunks = file.Length / FILE_UPLOAD_CHUNK_SIZE;
if (file.Length % FILE_UPLOAD_CHUNK_SIZE != 0)
{
// There was a remainder to the division, so add one to account for it.
totalChunks++;
}
Logger.LogDebug(string.Format("Uploading file in {0} chunks (max chunk length: {1}MB).", totalChunks, FILE_UPLOAD_CHUNK_SIZE / 1024 / 1024));
for (int partNumber = 1; partNumber <= totalChunks; partNumber++)
{
DeckCloudFileResponse requestChunkResponse = RequestChunkParameters(initiateChunkingResponse, partNumber);
DateTime start = DateTime.Now;
int bytesUploaded = UploadChunk(file, requestChunkResponse);
TimeSpan duration = DateTime.Now - start;
var byteRate = (double) bytesUploaded / duration.TotalSeconds;
if (callbackIncrementProgress != null)
{
Logger.LogDebug("Calling delegate to increment progress.");
// The bytesUploaded will always be 5MB or less, thus
// an int will suffice. The int is cast to a long here.
callbackIncrementProgress(bytesUploaded, byteRate);
}
}
}
}
