public async Task <ImageResizeUploadResult> CreateImageAsync(long tenantId, IBlobContent content, IEnumerable <ResizeOptions> options)
{
// Get streams to resized images
IEnumerable <Stream> streams = options.Select(o => _imageAnalysisService.ResizeImage(content.Stream, o));
// Create blobs
long imageBlobId = await CreateBlobAsync(tenantId, content);
List <long> blobIds = new List <long>();
foreach (Stream stream in streams)
{
blobIds.Add(await CreateBlobAsync(tenantId, new BlobContent {
Name = content.Name, Type = content.Type, Stream = stream
}));
}
// Return result
return(new ImageResizeUploadResult
{
Name = content.Name,
Size = content.Stream.Length,
ImageBlobId = imageBlobId,
PreviewImageBlobId = blobIds[0],
ThumbnailImageBlobId = blobIds[1]
});
}
public async Task <long> CreateBlobAsync(long tenantId, IBlobContent content)
{
// Construct blob object
bool isImage = ContentTypeIsImage(content.Type);
Blob blob = isImage ? GetBlobImage(content) : new Blob()
{
BlobType = BlobType.Document
};
DateTime utcNow = DateTime.UtcNow;
blob.ContentType = content.Type;
blob.Created = utcNow;
blob.Name = content.Name;
blob.Path = UncommittedPath;
blob.Size = (int)content.Stream.Length;
blob.TenantId = tenantId;
blob.Updated = utcNow;
// Create blob record and get back newly allocated blob identifier
blob.BlobId = isImage ? await _storageRepository.CreateBlobImageAsync(tenantId, (BlobImage)blob) : await _storageRepository.CreateBlobAsync(tenantId, blob);
// Create blob content
await _blobService.CreateBlobContentAsync(blob, content.Stream);
// Return newly allocated blob identifier
return(blob.BlobId);
}
/// <summary>
/// Gets the upload stream.
/// </summary>
/// <param name="content">The content.</param>
/// <returns>The upload stream</returns>
public override Stream GetUploadStream(IBlobContent content)
{
var container = this.GetOrCreateContainer(this.containerName);
CloudBlockBlob blob = container.GetBlockBlobReference(GetBlobName(content));
return(blob.OpenWrite());
}
/// <summary>
/// Gets the download stream for a specific content..
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <returns>The binary stream of the content item.</returns>
public override Stream GetDownloadStream(IBlobContent content)
{
TransferUtilityOpenStreamRequest request = new TransferUtilityOpenStreamRequest()
.WithBucketName(this.bucketName).WithKey(content.FilePath);
var stream = this.transferUtility.OpenStream(request);
return stream;
}
public async Task ValidateCreatePageImagesAsync(long tenantId, long pageId, IBlobContent content)
{
// Get page details
Page page = await _pageRepository.ReadPageAsync(tenantId, pageId);
// Check that master page associated with page allows images
MasterPage masterPage = await _masterPageRepository.ReadMasterPageAsync(tenantId, page.MasterPageId);
if (!masterPage.HasImage)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, PageResource.ImageNotAllowedMessage));
}
// Check that blob type is correct
if (content.Type != ContentTypes.Gif && content.Type != ContentTypes.Jpeg && content.Type != ContentTypes.Png)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, PageResource.ImageInvalidMessage));
}
// Check that supplied upload is an image
ImageMetadata metadata = _imageAnalysisService.GetImageMetadata(content.Stream);
if (metadata == null)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, PageResource.ImageInvalidMessage));
}
// Check image dimension constraints (minimum width and height)
if (metadata.Width < masterPage.ImageMinWidth.Value || metadata.Height < masterPage.ImageMinHeight.Value)
{
throw new ValidationErrorException(new ValidationError(PagePropertyNames.ImageBlobId, string.Format(PageResource.ImageDimensionsInvalidMessage, masterPage.ImageMinWidth.Value, masterPage.ImageMinHeight.Value)));
}
}
/// <summary>
/// Gets the download stream for a specific content..
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <returns>The binary stream of the content item.</returns>
public override Stream GetDownloadStream(IBlobContent content)
{
TransferUtilityOpenStreamRequest request = new TransferUtilityOpenStreamRequest()
.WithBucketName(this.bucketName).WithKey(content.FilePath);
var stream = this.transferUtility.OpenStream(request);
return(stream);
}
private BlobImage GetBlobImage(IBlobContent content)
{
long position = content.Stream.Position;
ImageMetadata metadata = _imageAnalysisService.GetImageMetadata(content.Stream);
content.Stream.Position = position;
return(new BlobImage
{
BlobType = BlobType.Image,
Height = metadata.Height,
Width = metadata.Width
});
}
/// <summary>
/// Uploads the specified content item to the remote blob storage.
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <param name="source">The source item's content stream.</param>
/// <param name="bufferSize">Size of the upload buffer.</param>
/// <returns>The length of the uploaded stream.</returns>
public override long Upload(IBlobContent content, Stream source, int bufferSize)
{
var request = new TransferUtilityUploadRequest()
{
BucketName = this.bucketName,
Key = content.FilePath,
PartSize = bufferSize,
ContentType = content.MimeType,
CannedACL = S3CannedACL.PublicRead
};
//get it before the upload, because afterwards the stream is closed already
long sourceLength = source.Length;
using (MemoryStream str = new MemoryStream())
{
source.CopyTo(str);
request.InputStream = str;
this.transferUtility.Upload(request);
}
return(sourceLength);
}
/// <summary>
/// Uploads the specified content item to the remote blob storage.
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <param name="source">The source item's content stream.</param>
/// <param name="bufferSize">Size of the upload buffer.</param>
/// <returns>The length of the uploaded stream.</returns>
public override long Upload(IBlobContent content, Stream source, int bufferSize)
{
var request = new TransferUtilityUploadRequest()
.WithBucketName(this.bucketName)
.WithKey(content.FilePath)
.WithPartSize(bufferSize)
.WithContentType(content.MimeType);
//set the item's accessibility as public
request.AddHeader("x-amz-acl", "public-read");
//get it before the upload, because afterwards the stream is closed already
long sourceLength = source.Length;
using (MemoryStream str = new MemoryStream())
{
source.CopyTo(str);
request.InputStream = str;
this.transferUtility.Upload(request);
}
return(sourceLength);
}
/// <summary>
/// Gets the upload stream for a specific content.
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <returns>The upload stream for a specific content.</returns>
public override Stream GetUploadStream(IBlobContent content)
{
throw new NotSupportedException("GetUploadStream() is not supported. Override Upload method.");
}
/// <summary>
/// Uploads the specified content item to the remote blob storage.
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <param name="source">The source item's content stream.</param>
/// <param name="bufferSize">Size of the upload buffer.</param>
/// <returns>The length of the uploaded stream.</returns>
public override long Upload(IBlobContent content, Stream source, int bufferSize)
{
var request = new TransferUtilityUploadRequest()
{
BucketName = this.bucketName,
Key = content.FilePath,
PartSize = 6291456,
ContentType = content.MimeType,
CannedACL = S3CannedACL.PublicRead
};
//get it before the upload, because afterwards the stream is closed already
long sourceLength = source.Length;
using (MemoryStream str = new MemoryStream())
{
source.CopyTo(str);
request.InputStream = str;
this.transferUtility.Upload(request);
}
return sourceLength;
}
/// <summary>
/// Gets the download stream.
/// </summary>
/// <param name="content">The content.</param>
/// <returns></returns>
public override Stream GetDownloadStream(IBlobContent content)
{
string filename = this.GetBlobName(content);
try
{
var cloudObject = this.ContainerBucket.GetObject(filename);
return cloudObject.Read();
}
catch (ObjectNotFoundException oex)
{
Logger.Writer.Write("Object not found: Error obtaining the download stream for file {0} on the CDN as {1} CDN. {2}".Arrange(content.FilePath, filename, oex.Message));
}catch(Exception ex){
Logger.Writer.Write("Error obtaining the download stream for file {0} on the CDN as {1} CDN. {2}".Arrange(content.FilePath, filename, ex.Message));
}
return null;
}
/// <summary>
/// Uploads the specified content item to the remote blob storage.
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <param name="source">The source item's content stream.</param>
/// <param name="bufferSize">Size of the upload buffer.</param>
/// <returns>The length of the uploaded stream.</returns>
public override long Upload(IBlobContent content, Stream source, int bufferSize)
{
var request = new TransferUtilityUploadRequest()
.WithBucketName(this.bucketName)
.WithKey(content.FilePath)
.WithPartSize(bufferSize)
.WithContentType(content.MimeType);
//set the item's accessibility as public
request.AddHeader("x-amz-acl", "public-read");
//get it before the upload, because afterwards the stream is closed already
long sourceLength = source.Length;
using (MemoryStream str = new MemoryStream())
{
source.CopyTo(str);
request.InputStream = str;
this.transferUtility.Upload(request);
}
return sourceLength;
}
public override Stream GetUploadStream(IBlobContent content)
{
EnsureFilePath(content);
return base.GetUploadStream(content);
}
/// <summary>
/// Downloads a content to the stream
/// </summary>
/// <param name="content">The content</param>
/// <param name="target">The target stream</param>
public void DownloadToStream(IBlobContent content, Stream target)
{
CloudBlob blob = this.GetBlob(content);
blob.DownloadToStream(target);
}
/// <summary>
/// Gets the download stream.
/// </summary>
/// <param name="content">The content.</param>
/// <returns>The download stream</returns>
public override Stream GetDownloadStream(IBlobContent content)
{
CloudBlob blob = this.GetBlob(content);
return(blob.OpenRead());
}
/// <summary>
/// Uploads the specified content item to the remote blob storage.
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <param name="source">The source item's content stream.</param>
/// <param name="bufferSize">Size of the upload buffer.</param>
/// <returns>The length of the uploaded stream.</returns>
public override long Upload(IBlobContent content, Stream source, int bufferSize)
{
var filename = this.GetBlobName(content);
var obj = new CF_Object(this.Connection, this.ContainerBucket, this.Client, filename);
obj.Write(source);
return obj.ContentLength;
}
/// <summary>
/// Gets the download stream.
/// </summary>
/// <param name="content">The content.</param>
/// <returns>The download stream</returns>
public override Stream GetDownloadStream(IBlobContent content)
{
CloudBlob blob = this.GetBlob(content);
return blob.OpenRead();
}
public async Task <IEnumerable <ImageResizeUploadResult> > CreatePageImagesAsync(long tenantId, long pageId, IBlobContent content)
{
// Validate the request to create page images
await _pageValidator.ValidateCreatePageImagesAsync(tenantId, pageId, content);
// Create thumbnail and preview images
Page page = await _pageRepository.ReadPageAsync(tenantId, pageId);
MasterPage masterPage = await _masterPageRepository.ReadMasterPageAsync(tenantId, page.MasterPageId);
ResizeOptions thumbnailImageResizeOptions = new ResizeOptions {
Mode = masterPage.ThumbnailImageResizeMode.Value, Width = masterPage.ThumbnailImageWidth.Value, Height = masterPage.ThumbnailImageHeight.Value
};
ResizeOptions previewImageResizeOptions = new ResizeOptions {
Mode = masterPage.PreviewImageResizeMode.Value, Width = masterPage.PreviewImageWidth.Value, Height = masterPage.PreviewImageHeight.Value
};
Stream thumbnailImageContentStream = _imageAnalysisService.ResizeImage(content.Stream, thumbnailImageResizeOptions);
Stream previewImageContentStream = _imageAnalysisService.ResizeImage(content.Stream, previewImageResizeOptions);
// Create blobs for thumbnail, preview and original image
long imageBlobId = await _storageService.CreateBlobAsync(tenantId, content);
long previewImageBlobId = await _storageService.CreateBlobAsync(tenantId, new BlobContent { Name = content.Name, Type = content.Type, Stream = previewImageContentStream });
long thumbnailImageBlobId = await _storageService.CreateBlobAsync(tenantId, new BlobContent { Name = content.Name, Type = content.Type, Stream = thumbnailImageContentStream });
// Return result
return(new List <ImageResizeUploadResult>
{
new ImageResizeUploadResult
{
Name = content.Name,
Size = content.Stream.Length,
ImageBlobId = imageBlobId,
PreviewImageBlobId = previewImageBlobId,
ThumbnailImageBlobId = thumbnailImageBlobId
}
});
}
/// <summary>
/// Gets the upload stream for a specific content.
/// </summary>
/// <param name="content">Descriptor of the item on the remote blob storage.</param>
/// <returns>The upload stream for a specific content.</returns>
public override Stream GetUploadStream(IBlobContent content)
{
throw new NotSupportedException("GetUploadStream() is not supported. Override Upload method.");
}
/// <summary>
/// Downloads a content to the stream
/// </summary>
/// <param name="content">The content</param>
/// <param name="target">The target stream</param>
public void DownloadToStream(IBlobContent content, Stream target)
{
CloudBlob blob = this.GetBlob(content);
blob.DownloadToStream(target);
}
/// <summary>
/// Gets the upload stream.
/// </summary>
/// <param name="content">The content.</param>
/// <returns>The upload stream</returns>
public override Stream GetUploadStream(IBlobContent content)
{
var container = this.GetOrCreateContainer(this.containerName);
CloudBlockBlob blob = container.GetBlockBlobReference(GetBlobName(content));
return blob.OpenWrite();
}
