static void Main(string[] args)
{
if (args.Length < 2)
{
Console.WriteLine("largefileuploader.exe <local file path> <container SAS string> <optional: upload chunk size in KB>");
Environment.Exit(1);
}
LargeFileUploaderUtils.Log = Console.Out.WriteLine;
int chunkSizeKB = (args.Length > 2) ? int.Parse(args[2]) : 2048;
LargeFileUploaderUtils.NumBytesPerChunk = chunkSizeKB * 1024;
//LargeFileUploaderUtils.UploadAsync(
// inputFile: @"C:\temp\watestsample.bak",
// storageConnectionString: Environment.GetEnvironmentVariable("AZURE_STORAGE_CONNECTION_STRING", EnvironmentVariableTarget.Machine),
// containerName: "bigfiles",
// uploadParallelism: 2).Wait();
LargeFileUploaderUtils.UploadAsyncSAS(
inputFile: args[0],
containerSASString: args[1],
uploadParallelism: 2).Wait();
//byte[] someData = Encoding.UTF8.GetBytes("Hallo");
//var address = someData.UploadAsync(
// storageAccount: CloudStorageAccount.DevelopmentStorageAccount,
// containerName: "dummy222222",
// blobName: "somedata2.txt",
// uploadParallelism: 1).Result;
}
public static async Task <string> UploadAsync(Func <long, int, Task <byte[]> > fetchLocalData, long blobLenth,
CloudBlockBlob blockBlob, uint uploadParallelism = DEFAULT_PARALLELISM)
{
const int MAXIMUM_UPLOAD_SIZE = 4 * MB;
if (NumBytesPerChunk > MAXIMUM_UPLOAD_SIZE)
{
NumBytesPerChunk = MAXIMUM_UPLOAD_SIZE;
}
#region Which blocks exist in the file
var allBlockInFile = Enumerable
.Range(0, 1 + ((int)(blobLenth / NumBytesPerChunk)))
.Select(_ => new BlockMetadata(_, blobLenth, NumBytesPerChunk))
.Where(block => block.Length > 0)
.ToList();
var blockIdList = allBlockInFile.Select(_ => _.BlockId).ToList();
#endregion
#region Which blocks are already uploaded
List <BlockMetadata> missingBlocks = null;
try
{
var existingBlocks = (await blockBlob.DownloadBlockListAsync(
BlockListingFilter.Uncommitted,
AccessCondition.GenerateEmptyCondition(),
new BlobRequestOptions {
},
new OperationContext {
}))
.Where(_ => _.Length == NumBytesPerChunk)
.ToList();
missingBlocks = allBlockInFile.Where(blockInFile => !existingBlocks.Any(existingBlock =>
existingBlock.Name == blockInFile.BlockId &&
existingBlock.Length == blockInFile.Length)).ToList();
}
catch (StorageException)
{
missingBlocks = allBlockInFile;
}
#endregion
Func <BlockMetadata, Statistics, Task> uploadBlockAsync = async(block, stats) =>
{
byte[] blockData = await fetchLocalData(block.Index, block.Length);
string contentHash = md5()(blockData);
DateTime start = DateTime.UtcNow;
await ExecuteUntilSuccessAsync(async() =>
{
await blockBlob.PutBlockAsync(
blockId: block.BlockId,
blockData: new MemoryStream(blockData, true),
contentMD5: contentHash,
accessCondition: AccessCondition.GenerateEmptyCondition(),
options: new BlobRequestOptions
{
StoreBlobContentMD5 = true,
UseTransactionalMD5 = true
},
operationContext: new OperationContext());
}, consoleExceptionHandler);
stats.Add(block.Length, start);
};
var s = new Statistics(missingBlocks.Sum(b => (long)b.Length));
await LargeFileUploaderUtils.ForEachAsync(
source : missingBlocks,
parallelUploads : 4,
body : blockMetadata => uploadBlockAsync(blockMetadata, s));
await ExecuteUntilSuccessAsync(async() =>
{
await blockBlob.PutBlockListAsync(blockIdList);
}, consoleExceptionHandler);
log("PutBlockList succeeded, finished upload to {0}", blockBlob.Uri.AbsoluteUri);
return(blockBlob.Uri.AbsoluteUri);
}