/// <summary>
/// Initializes a new instance of the BlobReadStreamBase class.
/// </summary>
/// <param name="blob">Blob reference to read from</param>
/// <param name="accessCondition">An <see cref="AccessCondition"/> object that represents the condition that must be met in order for the request to proceed. If <c>null</c>, no condition is used.</param>
/// <param name="options">A <see cref="BlobRequestOptions"/> object that specifies additional options for the request.</param>
/// <param name="operationContext">An <see cref="OperationContext"/> object that represents the context for the current operation.</param>
protected BlobReadStreamBase(CloudBlob blob, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
{
if (options.UseTransactionalMD5.Value)
{
CommonUtility.AssertInBounds("StreamMinimumReadSizeInBytes", blob.StreamMinimumReadSizeInBytes, 1, Constants.MaxRangeGetContentMD5Size);
}
this.blob = blob;
this.blobProperties = new BlobProperties(blob.Properties);
this.currentOffset = 0;
this.streamMinimumReadSizeInBytes = this.blob.StreamMinimumReadSizeInBytes;
this.internalBuffer = new MultiBufferMemoryStream(blob.ServiceClient.BufferManager);
this.accessCondition = accessCondition;
this.options = options;
this.operationContext = operationContext;
this.blobMD5 = (this.options.DisableContentMD5Validation.Value || string.IsNullOrEmpty(this.blobProperties.ContentMD5)) ? null : new MD5Wrapper();
this.lastException = null;
}
public static void AssertAreEqual(BlobProperties expected, BlobProperties actual, bool checkContentMD5)
{
if (expected == null)
{
Assert.IsNull(actual);
}
else
{
Assert.IsNotNull(actual);
Assert.AreEqual(expected.CacheControl, actual.CacheControl);
Assert.AreEqual(expected.ContentDisposition, actual.ContentDisposition);
Assert.AreEqual(expected.ContentEncoding, actual.ContentEncoding);
Assert.AreEqual(expected.ContentLanguage, actual.ContentLanguage);
if (checkContentMD5)
{
Assert.AreEqual(expected.ContentMD5, actual.ContentMD5);
}
Assert.AreEqual(expected.ContentType, actual.ContentType);
Assert.AreEqual(expected.ETag, actual.ETag);
Assert.AreEqual(expected.LastModified, actual.LastModified);
Assert.AreEqual(expected.Length, actual.Length);
}
}
public async Task CloudPageBlobCopyFromSnapshotTestAsync()
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
CloudPageBlob source = container.GetPageBlobReference("source");
string data = new string('a', 512);
await UploadTextAsync(source, data, Encoding.UTF8);
source.Metadata["Test"] = "value";
await source.SetMetadataAsync();
CloudPageBlob snapshot = await source.CreateSnapshotAsync();
//Modify source
string newData = new string('b', 512);
source.Metadata["Test"] = "newvalue";
await source.SetMetadataAsync();
source.Properties.ContentMD5 = null;
await UploadTextAsync(source, newData, Encoding.UTF8);
Assert.AreEqual(newData, await DownloadTextAsync(source, Encoding.UTF8), "Source is modified correctly");
Assert.AreEqual(data, await DownloadTextAsync(snapshot, Encoding.UTF8), "Modifying source blob should not modify snapshot");
await source.FetchAttributesAsync();
await snapshot.FetchAttributesAsync();
Assert.AreNotEqual(source.Metadata["Test"], snapshot.Metadata["Test"], "Source and snapshot metadata should be independent");
CloudPageBlob copy = container.GetPageBlobReference("copy");
await copy.StartCopyAsync(TestHelper.Defiddler(snapshot));
await WaitForCopyAsync(copy);
Assert.AreEqual(CopyStatus.Success, copy.CopyState.Status);
Assert.AreEqual(data, await DownloadTextAsync(copy, Encoding.UTF8), "Data inside copy of blob not similar");
await copy.FetchAttributesAsync();
BlobProperties prop1 = copy.Properties;
BlobProperties prop2 = snapshot.Properties;
Assert.AreEqual(prop1.CacheControl, prop2.CacheControl);
Assert.AreEqual(prop1.ContentDisposition, prop2.ContentDisposition);
Assert.AreEqual(prop1.ContentEncoding, prop2.ContentEncoding);
Assert.AreEqual(prop1.ContentLanguage, prop2.ContentLanguage);
Assert.AreEqual(prop1.ContentMD5, prop2.ContentMD5);
Assert.AreEqual(prop1.ContentType, prop2.ContentType);
Assert.AreEqual("value", copy.Metadata["Test"], false, "Copied metadata not same");
await copy.DeleteAsync();
}
finally
{
await container.DeleteAsync();
}
}
public async Task CloudPageBlobCopyTestAsync()
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
CloudPageBlob source = container.GetPageBlobReference("source");
string data = new string('a', 512);
await UploadTextAsync(source, data, Encoding.UTF8);
source.Metadata["Test"] = "value";
await source.SetMetadataAsync();
CloudPageBlob copy = container.GetPageBlobReference("copy");
string copyId = await copy.StartCopyAsync(TestHelper.Defiddler(source));
Assert.AreEqual(BlobType.PageBlob, copy.BlobType);
await WaitForCopyAsync(copy);
Assert.AreEqual(CopyStatus.Success, copy.CopyState.Status);
Assert.AreEqual(source.Uri.AbsolutePath, copy.CopyState.Source.AbsolutePath);
Assert.AreEqual(data.Length, copy.CopyState.TotalBytes);
Assert.AreEqual(data.Length, copy.CopyState.BytesCopied);
Assert.AreEqual(copyId, copy.CopyState.CopyId);
Assert.IsTrue(copy.CopyState.CompletionTime > DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMinutes(1)));
OperationContext opContext = new OperationContext();
await TestHelper.ExpectedExceptionAsync(
async() => await copy.AbortCopyAsync(copyId, null, null, opContext),
opContext,
"Aborting a copy operation after completion should fail",
HttpStatusCode.Conflict,
"NoPendingCopyOperation");
await source.FetchAttributesAsync();
Assert.IsNotNull(copy.Properties.ETag);
Assert.AreNotEqual(source.Properties.ETag, copy.Properties.ETag);
Assert.IsTrue(copy.Properties.LastModified > DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMinutes(1)));
string copyData = await DownloadTextAsync(copy, Encoding.UTF8);
Assert.AreEqual(data, copyData, "Data inside copy of blob not similar");
await copy.FetchAttributesAsync();
BlobProperties prop1 = copy.Properties;
BlobProperties prop2 = source.Properties;
Assert.AreEqual(prop1.CacheControl, prop2.CacheControl);
Assert.AreEqual(prop1.ContentDisposition, prop2.ContentDisposition);
Assert.AreEqual(prop1.ContentEncoding, prop2.ContentEncoding);
Assert.AreEqual(prop1.ContentLanguage, prop2.ContentLanguage);
Assert.AreEqual(prop1.ContentMD5, prop2.ContentMD5);
Assert.AreEqual(prop1.ContentType, prop2.ContentType);
Assert.AreEqual("value", copy.Metadata["Test"], false, "Copied metadata not same");
await copy.DeleteAsync();
}
finally
{
await container.DeleteAsync();
}
}
private static async Task CloudBlockBlobCopyFromCloudFileImpl(Func <CloudFile, CloudBlockBlob, string> copyFunc)
{
CloudFileClient fileClient = GenerateCloudFileClient();
string name = GetRandomContainerName();
CloudFileShare share = fileClient.GetShareReference(name);
CloudBlobContainer container = GetRandomContainerReference();
try
{
try
{
await container.CreateAsync();
await share.CreateAsync();
CloudFile source = share.GetRootDirectoryReference().GetFileReference("source");
byte[] data = GetRandomBuffer(1024);
await source.UploadFromByteArrayAsync(data, 0, data.Length);
source.Metadata["Test"] = "value";
await source.SetMetadataAsync();
string sasToken = source.GetSharedAccessSignature(new SharedAccessFilePolicy
{
Permissions = SharedAccessFilePermissions.Read,
SharedAccessExpiryTime = DateTime.UtcNow.AddHours(24)
});
Uri fileSasUri = new Uri(source.StorageUri.PrimaryUri.ToString() + sasToken);
source = new CloudFile(fileSasUri);
CloudBlockBlob copy = container.GetBlockBlobReference("copy");
string copyId = copyFunc(source, copy);
Assert.AreEqual(BlobType.BlockBlob, copy.BlobType);
try
{
await WaitForCopyAsync(copy);
Assert.AreEqual(CopyStatus.Success, copy.CopyState.Status);
Assert.AreEqual(source.Uri.AbsolutePath, copy.CopyState.Source.AbsolutePath);
Assert.AreEqual(data.Length, copy.CopyState.TotalBytes);
Assert.AreEqual(data.Length, copy.CopyState.BytesCopied);
Assert.AreEqual(copyId, copy.CopyState.CopyId);
Assert.IsFalse(copy.Properties.IsIncrementalCopy);
Assert.IsTrue(copy.CopyState.CompletionTime > DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMinutes(1)));
}
catch (NullReferenceException)
{
// potential null ref in the WaitForCopyTask and CopyState check implementation
}
OperationContext opContext = new OperationContext();
await TestHelper.ExpectedExceptionAsync(
async() => await copy.AbortCopyAsync(copyId, null, null, opContext),
opContext,
"Aborting a copy operation after completion should fail",
HttpStatusCode.Conflict,
"NoPendingCopyOperation");
await source.FetchAttributesAsync();
Assert.IsNotNull(copy.Properties.ETag);
Assert.AreNotEqual(source.Properties.ETag, copy.Properties.ETag);
Assert.IsTrue(copy.Properties.LastModified > DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMinutes(1)));
byte[] copyData = new byte[source.Properties.Length];
await copy.DownloadToByteArrayAsync(copyData, 0);
Assert.IsTrue(data.SequenceEqual(copyData), "Data inside copy of blob not similar");
await copy.FetchAttributesAsync();
BlobProperties prop1 = copy.Properties;
FileProperties prop2 = source.Properties;
Assert.AreEqual(prop1.CacheControl, prop2.CacheControl);
Assert.AreEqual(prop1.ContentEncoding, prop2.ContentEncoding);
Assert.AreEqual(prop1.ContentLanguage, prop2.ContentLanguage);
Assert.AreEqual(prop1.ContentMD5, prop2.ContentMD5);
Assert.AreEqual(prop1.ContentType, prop2.ContentType);
Assert.AreEqual("value", copy.Metadata["Test"], false, "Copied metadata not same");
await copy.DeleteIfExistsAsync();
}
finally
{
await share.DeleteAsync();
}
}
finally
{
await container.DeleteAsync();
}
}
public static void AssertAreEqual(BlobProperties expected, BlobProperties actual)
{
AssertAreEqual(expected, actual, true);
}
