private async Task CopyStreamToBlobAsync(Stream sourceStream, BlobContainerClient container, string blobName, int bufferSize, string sourceMD5, CancellationToken cancellationToken)
{
var blob = container.GetBlockBlobClient(blobName);
var blobHasher = CopyUtils.GetMD5Hasher();
var blockIDs = new List <string>();
var blockNumber = 0;
await CopyUtils.CopyAsync(
(buffer, ct) => CopyUtils.ReadStreamMaxBufferAsync(buffer, sourceStream, ct),
async (buffer, count, cancellationToken2) =>
{
var blockId = GetBlockId(blockNumber);
blockIDs.Add(blockId);
var blockMD5Hash = CopyUtils.GetMD5Hash(buffer, 0, count);
CopyUtils.AppendMDHasherData(blobHasher, buffer, 0, count);
using (var ms = new MemoryStream(buffer, 0, count))
{
await blob.StageBlockAsync(blockId, ms, blockMD5Hash, null, null, cancellationToken);
}
blockNumber++;
},
bufferSize,
cancellationToken
);
var blobHash = CopyUtils.GetMD5Hash(blobHasher);
if ((!string.IsNullOrEmpty(sourceMD5)) && (sourceMD5 != CopyUtils.GetMD5HashString(blobHash)))
{
throw new Exception("Invalid destination MD5");
}
var headers = new global::Azure.Storage.Blobs.Models.BlobHttpHeaders()
{
ContentHash = blobHash
};
await blob.CommitBlockListAsync(blockIDs, headers, null, null, null, cancellationToken);
}
