public System.Threading.Tasks.Task<object> UploadFileAsync(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
Func<object> f = () =>
{
long fileSize = fileStream.Length;
if (uploadProgressChanged != null)
{
uploadProgressChanged(fileSize / 10);
}
if (cancellationToken != CancellationToken.None && cancellationToken.IsCancellationRequested)
{
return null;
}
object guid = UploadFileSync(fileName, fileStream);
if (uploadProgressChanged != null)
{
uploadProgressChanged(fileSize);
}
return guid;
};
fileStream.Position = 0;
return System.Threading.Tasks.Task.Factory.StartNew(f, cancellationToken);
}
private Uri UploadFileOnBlocks(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
const int NumberOfTasks = 2;
const int NumberOfBlocks = 50;
var settings = this.GetUploadFileSettings();
var blobClient = this.account.CreateCloudBlobClient();
var container = blobClient.GetContainerReference(settings.Container);
container.CreateIfNotExists();
var blobName = this.GetBlobName(settings.Path, fileName);
var blob = container.GetBlockBlobReference(blobName);
int MinPartSize = (int)Math.Pow(2, 17);
int MaxPartSize = (int)Math.Pow(2, 22);
int partSize = Math.Min(MaxPartSize, Math.Max(MinPartSize, (int)(fileStream.Length / NumberOfBlocks)));
BlocksSyncContext context = new BlocksSyncContext(blob, fileStream, partSize, uploadProgressChanged, cancellationToken);
Task[] tasks = new Task[NumberOfTasks];
for (int i = 0; i < NumberOfTasks; i++)
{
Task task = System.Threading.Tasks.Task.Factory.StartNew(() => UploadBlocks(context), cancellationToken);
task.ContinueWith(t => { if (t.IsFaulted) context.Faulted = true; });
tasks[i] = task;
}
Task.WaitAll(tasks, cancellationToken);
// If the WaitAll throws, perhaps there are uncommitted blocks and the blocks have different id lengths, may be the uncommitted blocks need to be disposed first.
// http://gauravmantri.com/2013/05/18/windows-azure-blob-storage-dealing-with-the-specified-blob-or-block-content-is-invalid-error/
var blockList = Enumerable.Range(1, context.Index).ToList<int>().ConvertAll(i => GenerateBlockId(i));
blob.PutBlockList(blockList);
return blob.Uri;
}
private object UploadFile(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
this.uploadFilesCount++;
if (uploadFilesCount % 10 == 0)
{
throw new Exception("Simulate upload failure.");
}
var fileLength = fileStream.Length;
int uploadIterations = this.random.Next(10, 15);
int chunkSize = (int)(fileLength / uploadIterations);
for (int i = 0; i < uploadIterations; i++)
{
cancellationToken.ThrowIfCancellationRequested();
uploadProgressChanged(i * chunkSize);
Thread.Sleep(this.random.Next(80, 150));
}
uploadProgressChanged(fileLength);
lock (storage.StorageFiles)
{
Application.Current.Dispatcher.BeginInvoke(new Action(() =>
{
storage.StorageFiles.Add(new StorageFile(fileName));
}));
}
return(fileName);
}
internal BlocksSyncContext(CloudBlockBlob blob, Stream fileStream, int blockSize, CloudUploadFileProgressChanged progressChanged, CancellationToken cancellationToken)
{
this.Blob = blob;
this.FileStream = fileStream;
this.ProgressChanged = progressChanged;
this.CancellationToken = cancellationToken;
this.BlockSize = blockSize;
this.FileStream.Position = 0;
this.Index = 0;
this.Locker = new object();
this.progressChangedLocker = new object();
}
internal BlocksSyncContext(CloudBlockBlob blob, Stream fileStream, int blockSize, CloudUploadFileProgressChanged progressChanged, CancellationToken cancellationToken)
{
this.Blob = blob;
this.FileStream = fileStream;
this.ProgressChanged = progressChanged;
this.CancellationToken = cancellationToken;
this.BlockSize = blockSize;
this.FileStream.Position = 0;
this.Index = 0;
this.Locker = new object();
this.progressChangedLocker = new object();
}
public AmazonS3Context(IAmazonS3 client, string fileName, string existingBucketName, int partSize, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
this.fileName = fileName;
this.bucketName = existingBucketName;
this.partSize = partSize;
this.fileStream = fileStream;
this.uploadProgressChanged = uploadProgressChanged;
this.cancellationToken = cancellationToken;
this.client = client;
this.fileStream.Position = 0;
this.currentPartNumber = 1;
this.fileSize = this.fileStream.Length;
this.Init();
}
public AmazonS3Context(IAmazonS3 client, string fileName, string existingBucketName, int partSize, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
this.fileName = fileName;
this.bucketName = existingBucketName;
this.partSize = partSize;
this.fileStream = fileStream;
this.uploadProgressChanged = uploadProgressChanged;
this.cancellationToken = cancellationToken;
this.client = client;
this.fileStream.Position = 0;
this.currentPartNumber = 1;
this.fileSize = this.fileStream.Length;
this.Init();
}
private object UploadFile(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
long fileLength = fileStream.Length;
int uploadIterations = this.random.Next(10, 40);
int chunkSize = (int)(fileLength / uploadIterations);
for (int i = 0; i < uploadIterations; i++)
{
cancellationToken.ThrowIfCancellationRequested();
uploadProgressChanged(i * chunkSize);
Thread.Sleep(this.random.Next(200, 900));
}
uploadProgressChanged(fileLength);
return fileName;
}
private object UploadFile(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
long fileLength = fileStream.Length;
int uploadIterations = this.random.Next(10, 40);
int chunkSize = (int)(fileLength / uploadIterations);
for (int i = 0; i < uploadIterations; i++)
{
cancellationToken.ThrowIfCancellationRequested();
uploadProgressChanged(i * chunkSize);
Thread.Sleep(this.random.Next(200, 900));
}
uploadProgressChanged(fileLength);
return(fileName);
}
private object UploadFileOnBlocks(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
int partSize = MinPartSize;
string existingBucketName = GetUploadFileSettings().Bucket;
var context = new AmazonS3Context(s3Client, fileName, existingBucketName, partSize, fileStream, uploadProgressChanged, cancellationToken);
try
{
while (context.UploadNextPart());
context.CompleteMultipartUpload();
}
catch (Exception e)
{
context.AbortMultipartUpload();
throw;
}
return fileName;
}
private Uri UploadFileOnBlocks(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
const int NumberOfTasks = 2;
const int NumberOfBlocks = 50;
var settings = this.GetUploadFileSettings();
var blobClient = this.account.CreateCloudBlobClient();
var container = blobClient.GetContainerReference(settings.Container);
container.CreateIfNotExists();
var blobName = this.GetBlobName(settings.Path, fileName);
var blob = container.GetBlockBlobReference(blobName);
int MinPartSize = (int)Math.Pow(2, 17);
int MaxPartSize = (int)Math.Pow(2, 22);
int partSize = Math.Min(MaxPartSize, Math.Max(MinPartSize, (int)(fileStream.Length / NumberOfBlocks)));
BlocksSyncContext context = new BlocksSyncContext(blob, fileStream, partSize, uploadProgressChanged, cancellationToken);
Task[] tasks = new Task[NumberOfTasks];
for (int i = 0; i < NumberOfTasks; i++)
{
Task task = System.Threading.Tasks.Task.Factory.StartNew(() => UploadBlocks(context), cancellationToken);
task.ContinueWith(t => { if (t.IsFaulted)
{
context.Faulted = true;
}
});
tasks[i] = task;
}
Task.WaitAll(tasks, cancellationToken);
// If the WaitAll throws, perhaps there are uncommitted blocks and the blocks have different id lengths, may be the uncommitted blocks need to be disposed first.
// http://gauravmantri.com/2013/05/18/windows-azure-blob-storage-dealing-with-the-specified-blob-or-block-content-is-invalid-error/
var blockList = Enumerable.Range(1, context.Index).ToList <int>().ConvertAll(i => GenerateBlockId(i));
blob.PutBlockList(blockList);
return(blob.Uri);
}
private object UploadFileOnBlocks(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
int partSize = MinPartSize;
string existingBucketName = GetUploadFileSettings().Bucket;
var context = new AmazonS3Context(s3Client, fileName, existingBucketName, partSize, fileStream, uploadProgressChanged, cancellationToken);
try
{
while (context.UploadNextPart())
{
;
}
context.CompleteMultipartUpload();
}
catch (Exception e)
{
context.AbortMultipartUpload();
throw;
}
return(fileName);
}
public System.Threading.Tasks.Task <object> UploadFileAsync(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
Func <object> f = () =>
{
long fileSize = fileStream.Length;
if (uploadProgressChanged != null)
{
uploadProgressChanged(fileSize / 10);
}
if (cancellationToken != CancellationToken.None && cancellationToken.IsCancellationRequested)
{
return(null);
}
object guid = UploadFileSync(fileName, fileStream);
if (uploadProgressChanged != null)
{
uploadProgressChanged(fileSize);
}
return(guid);
};
fileStream.Position = 0;
return(System.Threading.Tasks.Task.Factory.StartNew(f, cancellationToken));
}
public Task<object> UploadFileAsync(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
return System.Threading.Tasks.Task.Factory.StartNew<object>(() => UploadFileOnBlocks(fileName, fileStream, uploadProgressChanged, cancellationToken), cancellationToken);
}
public async Task <object> UploadFileAsync(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri("http://webapifortelerikdemos.azurewebsites.net/");
using (var content = new MultipartFormDataContent())
using (var fileContent = new StreamContent(fileStream, (int)fileStream.Length))
{
fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
FileName = fileName
};
content.Add(fileContent);
using (var message = await client.PostAsync("/api/Values", content, cancellationToken))
{
var result = await message.Content.ReadAsStringAsync();
Debug.WriteLine($"Result - StatusCode: {message.StatusCode}, File Saved To: {result}");
// typical output
// Result - StatusCode: 201, File Saved To: ["D:\\home\\site\\wwwroot\\Snag1.gif"]
return(result);
}
}
}
}
public Task <object> UploadFileAsync(string fileName, Stream fileStream, CloudUploadFileProgressChanged uploadProgressChanged, CancellationToken cancellationToken)
{
return(System.Threading.Tasks.Task.Factory.StartNew <object>(() => UploadFileOnBlocks(fileName, fileStream, uploadProgressChanged, cancellationToken), cancellationToken));
}