/// <summary>
/// Test blob reads, expecting success.
/// </summary>
/// <param name="testBlob">The blob to test.</param>
/// <param name="testAccessCondition">The access condition to use.</param>
private void BlobReadExpectLeaseSuccessAPM(CloudBlockBlob testBlob, AccessCondition testAccessCondition)
{
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
IAsyncResult result = testBlob.BeginFetchAttributes(testAccessCondition, null /* options */, null /* operationContext */, ar => waitHandle.Set(), null);
waitHandle.WaitOne();
testBlob.EndFetchAttributes(result);
result = testBlob.BeginSnapshot(null /* metadata */, testAccessCondition, null /* options */, null /* operationContext */, ar => waitHandle.Set(), null);
waitHandle.WaitOne();
testBlob.EndSnapshot(result).Delete();
DownloadTextAPM(testBlob, Encoding.UTF8, testAccessCondition, null /* options */);
result = testBlob.BeginOpenRead(testAccessCondition, null /* options */, null /* operationContext */, ar => waitHandle.Set(), null);
waitHandle.WaitOne();
Stream stream = testBlob.EndOpenRead(result);
stream.ReadByte();
}
}
public void BlockBlobReadLockToETagTestAPM()
{
byte[] outBuffer = new byte[1 * 1024 * 1024];
byte[] buffer = GetRandomBuffer(2 * outBuffer.Length);
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudBlockBlob blob = container.GetBlockBlobReference("blob1");
blob.StreamMinimumReadSizeInBytes = outBuffer.Length;
using (MemoryStream wholeBlob = new MemoryStream(buffer))
{
blob.UploadFromStream(wholeBlob);
}
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
IAsyncResult result = blob.BeginOpenRead(
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
using (Stream blobStream = blob.EndOpenRead(result))
{
blobStream.Read(outBuffer, 0, outBuffer.Length);
blob.SetMetadata();
TestHelper.ExpectedException(
() => blobStream.Read(outBuffer, 0, outBuffer.Length),
"Blob read stream should fail if blob is modified during read",
HttpStatusCode.PreconditionFailed);
}
result = blob.BeginOpenRead(
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
using (Stream blobStream = blob.EndOpenRead(result))
{
long length = blobStream.Length;
blob.SetMetadata();
TestHelper.ExpectedException(
() => blobStream.Read(outBuffer, 0, outBuffer.Length),
"Blob read stream should fail if blob is modified during read",
HttpStatusCode.PreconditionFailed);
}
AccessCondition accessCondition = AccessCondition.GenerateIfNotModifiedSinceCondition(DateTimeOffset.Now.Subtract(TimeSpan.FromHours(1)));
blob.SetMetadata();
result = blob.BeginOpenRead(
accessCondition,
null,
null,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
TestHelper.ExpectedException(
() => blob.EndOpenRead(result),
"Blob read stream should fail if blob is modified during read",
HttpStatusCode.PreconditionFailed);
}
}
finally
{
container.DeleteIfExists();
}
}
/// <summary>
/// Test blob reads, expecting lease failure.
/// </summary>
/// <param name="testBlob">The blob to test.</param>
/// <param name="targetBlob">The blob to use for the target of copy operations.</param>
/// <param name="testAccessCondition">The failing access condition to use.</param>
/// <param name="expectedErrorCode">The expected error code.</param>
/// <param name="description">The reason why these calls should fail.</param>
private void BlobReadExpectLeaseFailureAPM(CloudBlockBlob testBlob, CloudBlockBlob targetBlob, AccessCondition testAccessCondition, HttpStatusCode expectedStatusCode, string expectedErrorCode, string description)
{
// FetchAttributes is a HEAD request with no extended error info, so it returns with the generic ConditionFailed error code.
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
IAsyncResult result = testBlob.BeginFetchAttributes(testAccessCondition, null /* options */, null /* operationContext */, ar => waitHandle.Set(), null);
waitHandle.WaitOne();
TestHelper.ExpectedException(
() => testBlob.EndFetchAttributes(result),
description + "(Fetch Attributes)",
HttpStatusCode.PreconditionFailed);
result = testBlob.BeginSnapshot(null /* metadata */, testAccessCondition, null /* options */, null /* operationContext */, ar => waitHandle.Set(), null);
waitHandle.WaitOne();
TestHelper.ExpectedException(
() => testBlob.EndSnapshot(result),
description + " (Create Snapshot)",
expectedStatusCode,
expectedErrorCode);
TestHelper.ExpectedException(
() => DownloadTextAPM(testBlob, Encoding.UTF8, testAccessCondition, null /* options */),
description + " (Download Text)",
expectedStatusCode,
expectedErrorCode);
result = testBlob.BeginOpenRead(testAccessCondition, null /* options */, null /* operationContext */, ar => waitHandle.Set(), null);
waitHandle.WaitOne();
TestHelper.ExpectedException(
() => testBlob.EndOpenRead(result),
description + " (Read Stream)",
expectedStatusCode/*,
expectedErrorCode*/);
}
}
