public void BlobWriteWhenOpenRead()
{
byte[] buffer = GetRandomBuffer(2 * 1024);
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudPageBlob blob = container.GetPageBlobReference("blob1");
using (MemoryStream srcStream = new MemoryStream(buffer))
{
blob.UploadFromStream(srcStream);
Stream blobStream = blob.OpenRead();
byte[] testBuffer = new byte[2048];
TestHelper.ExpectedException <NotSupportedException>(() => blobStream.Write(testBuffer, 0, 2048),
"Try writing to a stream opened for read");
}
}
finally
{
container.DeleteIfExists();
}
}
public async Task BlobOpenReadWithCancelTest()
{
CancellationTokenSource cts = new CancellationTokenSource();
byte[] buffer = new byte[4 * 1024 * 1024];
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudPageBlob blob = container.GetPageBlobReference("blob1");
using (MemoryStream srcStream = new MemoryStream(buffer))
{
blob.UploadFromStream(srcStream);
}
Stream dstStream = await blob.OpenReadAsync(null, null, null, cts.Token);
cts.Cancel();
try
{
Assert.IsTrue(cts.Token.IsCancellationRequested);
int bytesRead = 0;
do
{
bytesRead = await dstStream.ReadAsync(buffer, 0, buffer.Length, cts.Token);
}while (bytesRead > 0);
Assert.Fail("Expected exception not raised");
}
catch (StorageException e)
{
Assert.AreEqual("A task was canceled.", e.Message);
}
}
finally
{
container.DeleteIfExists();
}
}
public void BlobOpenReadTest()
{
byte[] buffer = GetRandomBuffer(2 * 1024);
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudPageBlob blob = container.GetPageBlobReference("blob1");
using (MemoryStream srcStream = new MemoryStream(buffer))
{
blob.UploadFromStream(srcStream);
Stream dstStream = blob.OpenRead();
TestHelper.AssertStreamsAreEqual(srcStream, dstStream);
}
}
finally
{
container.DeleteIfExists();
}
}
public static void UploadText(CloudBlob blob, string text, Encoding encoding, AccessCondition accessCondition = null, BlobRequestOptions options = null, OperationContext operationContext = null)
{
byte[] textAsBytes = encoding.GetBytes(text);
using (MemoryStream stream = new MemoryStream())
{
stream.Write(textAsBytes, 0, textAsBytes.Length);
if (blob.BlobType == BlobType.PageBlob)
{
int lastPageSize = (int)(stream.Length % 512);
if (lastPageSize != 0)
{
byte[] padding = new byte[512 - lastPageSize];
stream.Write(padding, 0, padding.Length);
}
}
stream.Seek(0, SeekOrigin.Begin);
blob.ServiceClient.DefaultRequestOptions.ParallelOperationThreadCount = 2;
if (blob.BlobType == BlobType.AppendBlob)
{
CloudAppendBlob blob1 = blob as CloudAppendBlob;
blob1.CreateOrReplace();
blob1.AppendBlock(stream, null);
}
else if (blob.BlobType == BlobType.PageBlob)
{
CloudPageBlob pageBlob = blob as CloudPageBlob;
pageBlob.UploadFromStream(stream, accessCondition, options, operationContext);
}
else
{
CloudBlockBlob blockBlob = blob as CloudBlockBlob;
blockBlob.UploadFromStream(stream, accessCondition, options, operationContext);
}
}
}
public void BlobSeekTest()
{
byte[] buffer = GetRandomBuffer(2 * 1024);
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudPageBlob blob = container.GetPageBlobReference("blob1");
using (MemoryStream srcStream = new MemoryStream(buffer))
{
blob.UploadFromStream(srcStream);
Stream blobStream = blob.OpenRead();
blobStream.Seek(2048, 0);
byte[] buff = new byte[100];
int numRead = blobStream.Read(buff, 0, 100);
Assert.AreEqual(numRead, 0);
}
}
finally
{
container.DeleteIfExists();
}
}
