public static void SaveFileToBlobStorage(
BlobStorageRequest request)
{
new BlobFuService(request.ConnectionStringName)
.SaveToBlobStorage(request);
}
public BlobFuService SaveToBlobStorage(BlobStorageRequest request)
{
VerifyContainer(request.Container);
if ((request.StreamOfDataToStore != null && request.StreamOfDataToStore.Length > 0) &&
(request.DataToStore != null && request.DataToStore.Length > 0))
{
throw new ApplicationException("Don't pass in a stream AND a byte array, I don't know which one to save");
}
if ((request.DataToStore != null && request.DataToStore.Length > 0) &&
(request.StreamOfDataToStore == null || request.StreamOfDataToStore.Length == 0))
{
request.StreamOfDataToStore = new MemoryStream(request.DataToStore);
}
// http://wely-lau.net/2012/02/26/uploading-big-files-in-windows-azure-blob-storage-with-putlistblock/
CloudBlockBlob blob = this._container.GetBlockBlobReference(request.Filename.ToLower());
//blob.Properties.CacheControl = "";
//blob.SetProperties();
int maxSize = 32 * 1024 * 1024; // 32 MB
//int maxSize = 1 * 1024 * 1024; // 1 MB
if (request.StreamOfDataToStore.Length > maxSize)
{
int id = 0;
long byteslength = request.StreamOfDataToStore.Length;
int bytesread = 0;
int index = 0;
List <string> blocklist = new List <string>();
int numBytesPerChunk = 1 * 1024 * 1024; //1MB per block
//int numBytesPerChunk = 50 * 1024; //50KB per block
byte[] buffer = new byte[numBytesPerChunk];
do
{
bytesread += request.StreamOfDataToStore.Read(buffer, 0, buffer.Length);
string blockIdBase64 = Convert.ToBase64String(System.BitConverter.GetBytes(id));
blob.PutBlock(blockIdBase64, new MemoryStream(buffer, true), null);
blocklist.Add(blockIdBase64);
id++;
} while (byteslength - bytesread > numBytesPerChunk);
long final = byteslength - bytesread;
byte[] finalbuffer = new byte[final];
bytesread += request.StreamOfDataToStore.Read(finalbuffer, 0, finalbuffer.Length);
string blockId = Convert.ToBase64String(System.BitConverter.GetBytes(id));
blob.PutBlock(blockId, new MemoryStream(finalbuffer, true), null);
blocklist.Add(blockId);
blob.PutBlockList(blocklist);
}
else
{
blob.UploadFromStream(request.StreamOfDataToStore);
}
if (request.BlobSavedCallback != null)
{
request.BlobSavedCallback(blob.Uri);
}
return(this);
}