private async Task <string> MultiPartUpload(string archiveDescription, Stream stream)
{
var streamLength = stream.Length;
if (streamLength > MultiPartUploadLimitInBytes)
{
throw new InvalidOperationException(@"Can't upload more than 40TB to Amazon Glacier, " +
$"current upload size: {new Size(streamLength).HumaneSize}");
}
UploadProgress?.SetTotal(streamLength);
UploadProgress?.ChangeType(UploadType.Chunked);
// using a chunked upload we can upload up to 10,000 chunks, 4GB max each
// we limit every chunk to a minimum of 128MB
// constraints: the part size must be a megabyte(1024KB)
// multiplied by a power of 2—for example,
// 1048576(1MB), 2097152(2MB), 4194304(4MB), 8388608(8 MB), and so on.
// the minimum allowable part size is 1MB and the maximum is 4GB(4096 MB).
var maxLengthPerPart = Math.Max(MinOnePartUploadSizeLimitInBytes, stream.Length / 10000);
const long maxPartLength = 4L * 1024 * 1024 * 1024; // 4GB
var lengthPerPartPowerOf2 = Math.Min(GetNextPowerOf2(maxLengthPerPart), maxPartLength);
var baseUrl = $"{GetUrl()}/multipart-uploads";
var uploadId = await GetUploadId(baseUrl, archiveDescription, lengthPerPartPowerOf2);
var client = GetClient(TimeSpan.FromDays(7));
var uploadUrl = $"{baseUrl}/{uploadId}";
var fullStreamPayloadTreeHash = RavenAwsHelper.CalculatePayloadTreeHash(stream);
try
{
while (stream.Position < streamLength)
{
var length = Math.Min(lengthPerPartPowerOf2, streamLength - stream.Position);
await UploadPart(stream, client, uploadUrl, length, retryCount : 0);
}
return(await CompleteMultiUpload(uploadUrl, client, streamLength, fullStreamPayloadTreeHash));
}
catch (Exception)
{
await AbortMultiUpload(uploadUrl, client);
throw;
}
finally
{
UploadProgress?.ChangeState(UploadState.Done);
}
}
private async Task MultiPartUpload(string key, Stream stream, Dictionary <string, string> metadata)
{
var streamLength = stream.Length;
if (streamLength > MultiPartUploadLimitInBytes)
{
throw new InvalidOperationException(@"Can't upload more than 5TB to Amazon S3, " +
$"current upload size: {new Size(streamLength).HumaneSize}");
}
UploadProgress?.SetTotal(streamLength);
UploadProgress?.ChangeType(UploadType.Chunked);
var baseUrl = $"{GetUrl()}/{key}";
var uploadId = await GetUploadId(baseUrl, metadata);
var client = GetClient(TimeSpan.FromDays(7));
var partNumbersWithEtag = new List <Tuple <int, string> >();
var partNumber = 0;
var completeUploadUrl = $"{baseUrl}?uploadId={uploadId}";
// using a chunked upload we can upload up to 1000 chunks, 5GB max each
// we limit every chunk to a minimum of 100MB
var maxLengthPerPart = Math.Max(MinOnePartUploadSizeLimitInBytes, stream.Length / 1000);
try
{
while (stream.Position < streamLength)
{
var length = Math.Min(maxLengthPerPart, streamLength - stream.Position);
var url = $"{baseUrl}?partNumber={++partNumber}&uploadId={uploadId}";
var etag = await UploadPart(stream, client, url, length, retryCount : 0);
partNumbersWithEtag.Add(new Tuple <int, string>(partNumber, etag));
}
await CompleteMultiUpload(completeUploadUrl, client, partNumbersWithEtag);
}
catch (Exception)
{
await AbortMultiUpload(client, completeUploadUrl);
throw;
}
finally
{
UploadProgress?.ChangeState(UploadState.Done);
}
}
private async Task PutBlockApi(string key, Stream stream, Dictionary <string, string> metadata)
{
var streamLength = stream.Length;
if (streamLength > TotalBlocksSizeLimitInBytes)
{
throw new InvalidOperationException(@"Can't upload more than 4.75TB to Azure, " +
$"current upload size: {new Size(streamLength).HumaneSize}");
}
var blockNumber = 0;
var blockIds = new List <string>();
var baseUrl = _serverUrlForContainer + "/" + key;
var client = GetClient(TimeSpan.FromDays(7));
UploadProgress?.SetTotal(streamLength);
UploadProgress?.ChangeType(UploadType.Chunked);
try
{
while (stream.Position < streamLength)
{
var blockNumberInBytes = BitConverter.GetBytes(blockNumber++);
var blockIdString = Convert.ToBase64String(blockNumberInBytes);
blockIds.Add(blockIdString);
var length = Math.Min(OnePutBlockSizeLimitInBytes, streamLength - stream.Position);
var baseUrlForUpload = baseUrl + "?comp=block&blockid=";
var url = baseUrlForUpload + WebUtility.UrlEncode(blockIdString);
await PutBlock(stream, client, url, length, retryCount : 0);
}
// put block list
await PutBlockList(baseUrl, client, blockIds, metadata);
}
finally
{
UploadProgress?.ChangeState(UploadState.Done);
}
}