ImageResizer.Plugins.AzureReader2.AzureFile Class Reference

Inheritance diagram for ImageResizer.Plugins.AzureReader2.AzureFile:

Collaboration diagram for ImageResizer.Plugins.AzureReader2.AzureFile:

Public Member Functions
	AzureFile (string blobName, AzureVirtualPathProvider parentProvider)
override System.IO.Stream	Open ()
	Attempts to download the blob into a MemoryStream instance and return it. Throws a FileNotFoundException if the blob doesn't exist. More...

Protected Attributes
readonly AzureVirtualPathProvider	parent

Additional Inherited Members
Properties inherited from ImageResizer.Plugins.IVirtualFile
string	VirtualPath [get]
	The virtual path of the file (relative to the domain, like /app/folder/file.ext) More...

Detailed Description

Definition at line 11 of file AzureFile.cs.

Member Function Documentation

override System.IO.Stream ImageResizer.Plugins.AzureReader2.AzureFile.Open ( )

inline

Attempts to download the blob into a MemoryStream instance and return it. Throws a FileNotFoundException if the blob doesn't exist.

Returns

Implements ImageResizer.Plugins.IVirtualFile.

Definition at line 22 of file AzureFile.cs.

                                                {
            // Prefix already stripped from virtual path

            // Get a reference to the blob
            // mb: 12/8/2012 - the path needs to be a uri now, so combining blobclient baseuri with the virtualpath
            Uri blobUri = new Uri(string.Format("{0}/{1}", parent.CloudBlobClient.BaseUri.OriginalString.TrimEnd('/', '\\'), VirtualPath));
            ICloudBlob cloudBlob = parent.CloudBlobClient.GetBlobReferenceFromServer(blobUri);

            MemoryStream ms = new MemoryStream(4096); // 4kb is a good starting point.

            // Synchronously download
            try {
                cloudBlob.DownloadToStream(ms);
            }
            catch (StorageException e) {
                // mb: 12/8/2012 - not sure of the correctness of these following lines
                // in other areas we just check e.RequestInformation.HttpStatusCode == 404 for a Not Found error
                // don't know what the errorcodes that will be returned
                if (e.RequestInformation.ExtendedErrorInformation.ErrorCode == "BlobNotFound") {
                    throw new FileNotFoundException("Azure blob file not found", e);
                }
                else if (e.RequestInformation.ExtendedErrorInformation.ErrorCode == "ContainerNotFound")
                {
                    throw new FileNotFoundException("Azure blob container not found", e);
                }
                else {
                    throw;
                }
            }

            ms.Seek(0, SeekOrigin.Begin); // Reset to beginning
            return ms;
        }

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The documentation for this class was generated from the following file:

• C:/Users/nathanael/Documents/resizer/Plugins/AzureReader2/AzureFile.cs