public async Task ParallelDownloadSlowTest()
{
string inputFileName = Path.GetTempFileName();
string outputFileName = Path.GetTempFileName();
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
CloudBlockBlob blob = container.GetBlockBlobReference("largeblob1");
long bufferSize = 12 * Constants.KB;
long offSet = 0;
using (FileStream file = new FileStream(inputFileName, FileMode.Create, FileAccess.Write))
{
while (offSet < 12 * Constants.MB)
{
byte[] buffer = GetRandomBuffer(bufferSize);
await file.WriteAsync(buffer, 0, buffer.Length);
offSet += bufferSize;
}
}
BlobRequestOptions options = new BlobRequestOptions();
options.ParallelOperationThreadCount = 16;
await blob.UploadFromFileAsync(inputFileName, null, options, null);
int parallelIOCount = 2;
long rangeSizeInBytes = 4 * Constants.MB;
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
DelayingDownloadRangeCloudBlob wrapperBlob = new DelayingDownloadRangeCloudBlob(blob.SnapshotQualifiedUri, blob.ServiceClient, 1000, 1000000);
await ParallelDownloadToFile.Start(wrapperBlob, outputFileName,
FileMode.Create,
parallelIOCount,
rangeSizeInBytes,
0,
null,
10000 /* Amount of time to wait before abort / retry */,
null,
null,
null,
CancellationToken.None).Task;
await blob.DeleteAsync();
Assert.IsTrue(FilesAreEqual(inputFileName, outputFileName));
}
finally
{
container.DeleteIfExists();
File.Delete(inputFileName);
File.Delete(outputFileName);
}
}
