public static string CalulateHash_MD5(Stream stream, long skipBytes, long size)
{
string md5 = null;
if (stream is FileStream)
{
using (MD5 md5Hash = MD5.Create())
using (var md5stream = new PartialFileStream(((FileStream)stream).Name, FileMode.Open, FileAccess.Read, FileShare.Read, skipBytes, size))
{
md5 = Convert.ToBase64String(md5Hash.ComputeHash(md5stream));
}
}
else
{
using (MD5 md5Hash = MD5.Create())
using (var md5stream = new PartialStream(stream, skipBytes, size))
{
md5 = Convert.ToBase64String(md5Hash.ComputeHash(md5stream));
}
}
return(md5);
}
private static List <PartETag> UploadParts
(
OssClient client,
string bucketName,
string objectName,
string fileToUpload,
string uploadId,
int partSize,
EventHandler <StreamTransferProgressArgs> streamTransferProgress,
CancellationToken cancellationToken = default(CancellationToken)
)
{
var fileSize = new FileInfo(fileToUpload).Length;
long progressUpdateInterval = (fileSize / 100 + 4096) / 4096 * 4096;
MultipartStreamProgressMonitor progressMonitor = null;
if (streamTransferProgress != null)
{
progressMonitor = new MultipartStreamProgressMonitor();
progressMonitor.StreamTransferProgress += streamTransferProgress;
progressMonitor.TotalBytes = fileSize;
#if DEBUG
progressMonitor.ShowProgressOnConsole = OutputDebugInfo;
#endif
}
var partCount = fileSize / partSize;
if (fileSize % partSize != 0)
{
partCount++;
}
var partETags = new List <PartETag>();
using (var fs = File.Open(fileToUpload, FileMode.Open, FileAccess.Read, FileShare.Read))
{
for (var i = 0; i < partCount; i++)
{
cancellationToken.ThrowIfCancellationRequested();
var skipBytes = (long)partSize * i;
var size = (partSize < fileSize - skipBytes) ? partSize : (fileSize - skipBytes);
string md5 = null;
using (MD5 md5Hash = MD5.Create())
using (var md5stream = new PartialFileStream(fileToUpload, FileMode.Open, FileAccess.Read, FileShare.Read, skipBytes, size))
{
md5 = Convert.ToBase64String(md5Hash.ComputeHash(md5stream));
}
Retry((_) =>
{
fs.Seek(skipBytes, 0);
var request = new UploadPartRequest(bucketName, objectName, uploadId)
{
InputStream = fs,
Md5Digest = md5,
PartSize = size,
PartNumber = i + 1
};
if (progressMonitor != null)
{
request.StreamTransferProgress += (s, e) => progressMonitor.PartStreamTransferProgress(i, e);
}
var result = client.UploadPart(request);
partETags.Add(result.PartETag);
},
cancellationToken: cancellationToken);
#if DEBUG
if (OutputDebugInfo)
{
Console.WriteLine("finish {0}/{1}", partETags.Count, partCount);
}
#endif
}
}
return(partETags);
}