/// <summary>
/// Computes the hash value for this stream.
/// </summary>
/// <returns>String representation of the computed hash value.</returns>
public string ComputeCRC64Hash()
{
using (Crc64Wrapper hasher = new Crc64Wrapper())
{
// Maximum amount you can read is from current spot to the end.
long leftToRead = this.Length - this.Position;
while (leftToRead != 0)
{
ArraySegment <byte> currentBlock = this.GetCurrentBlock();
// Update hash with the block
int blockReadLength = (int)Math.Min(leftToRead, currentBlock.Count);
hasher.UpdateHash(currentBlock.Array, currentBlock.Offset, blockReadLength);
this.AdvancePosition(ref leftToRead, blockReadLength);
}
return(hasher.ComputeHash());
}
}
public async Task UseTransactionalCRC64GetTestAsync()
{
BlobRequestOptions optionsWithNoCRC64 = new BlobRequestOptions()
{
ChecksumOptions = new ChecksumOptions {
UseTransactionalCRC64 = false
}
};
BlobRequestOptions optionsWithCRC64 = new BlobRequestOptions()
{
ChecksumOptions = new ChecksumOptions {
UseTransactionalCRC64 = true
}
};
byte[] buffer = GetRandomBuffer(3 * 1024 * 1024);
Crc64Wrapper hasher = new Crc64Wrapper();
hasher.UpdateHash(buffer, 0, buffer.Length);
string crc64 = hasher.ComputeHash();
string lastCheckCRC64 = null;
OperationContext opContextWithCRC64Check = new OperationContext();
opContextWithCRC64Check.ResponseReceived += (_, args) =>
{
if (long.Parse(HttpResponseParsers.GetContentLength(args.Response)) >= buffer.Length)
{
lastCheckCRC64 = HttpResponseParsers.GetContentCRC64(args.Response);
}
};
OperationContext opContextWithCRC64CheckAndInjectedFailure = new OperationContext();
opContextWithCRC64CheckAndInjectedFailure.ResponseReceived += (_, args) =>
{
args.Response.Headers.Remove(Constants.HeaderConstants.ContentCrc64Header);
args.Response.Headers.TryAddWithoutValidation(Constants.HeaderConstants.ContentCrc64Header, "dummy");
if (long.Parse(HttpResponseParsers.GetContentLength(args.Response)) >= buffer.Length)
{
lastCheckCRC64 = HttpResponseParsers.GetContentCRC64(args.Response);
}
};
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
CloudBlockBlob blockBlob = container.GetBlockBlobReference("blob1");
using (Stream blobStream = await blockBlob.OpenWriteAsync())
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
using (Stream stream = new MemoryStream())
{
//lastCheckCRC64 = null;
//blockBlob.DownloadToStream(stream, null, optionsWithNoCRC64, opContextWithCRC64Check);
//Assert.IsNotNull(lastCheckCRC64);
//lastCheckCRC64 = null;
//blockBlob.DownloadToStream(stream, null, optionsWithCRC64, opContextWithCRC64Check);
//Assert.IsNotNull(lastCheckCRC64);
lastCheckCRC64 = "invalid_CRC64";
await blockBlob.DownloadRangeToStreamAsync(stream, buffer.Length, buffer.Length, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
lastCheckCRC64 = "invalid_CRC64";
await blockBlob.DownloadRangeToStreamAsync(stream, buffer.Length, buffer.Length, null, optionsWithCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
await TestHelper.ExpectedExceptionAsync <StorageException>(
() => blockBlob.DownloadRangeToStreamAsync(stream, buffer.Length, buffer.Length, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure),
"Calculated CRC64 does not match existing property"
);
lastCheckCRC64 = "invalid_CRC64";
await blockBlob.DownloadRangeToStreamAsync(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
StorageException storageEx = await TestHelper.ExpectedExceptionAsync <StorageException>(
() => blockBlob.DownloadRangeToStreamAsync(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithCRC64, opContextWithCRC64Check),
"Downloading more than 4MB with transactional CRC64 should not be supported");
Assert.IsInstanceOfType(storageEx.InnerException, typeof(ArgumentOutOfRangeException));
lastCheckCRC64 = null;
using (Stream blobStream = await blockBlob.OpenReadAsync(null, optionsWithCRC64, opContextWithCRC64Check))
{
blobStream.CopyTo(stream);
Assert.IsNotNull(lastCheckCRC64);
}
lastCheckCRC64 = "invalid_CRC64";
using (Stream blobStream = await blockBlob.OpenReadAsync(null, optionsWithNoCRC64, opContextWithCRC64Check))
{
blobStream.CopyTo(stream);
Assert.IsNull(lastCheckCRC64);
}
}
CloudPageBlob pageBlob = container.GetPageBlobReference("blob3");
using (Stream blobStream = await pageBlob.OpenWriteAsync(buffer.Length * 2))
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
using (Stream stream = new MemoryStream())
{
lastCheckCRC64 = "invalid_CRC64";
await pageBlob.DownloadToStreamAsync(stream, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
StorageException storageEx = await TestHelper.ExpectedExceptionAsync <StorageException>(
() => pageBlob.DownloadToStreamAsync(stream, null, optionsWithCRC64, opContextWithCRC64Check),
"Page blob will not have CRC64 set by default; with UseTransactional, download should fail");
lastCheckCRC64 = "invalid_CRC64";
await pageBlob.DownloadRangeToStreamAsync(stream, buffer.Length, buffer.Length, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
lastCheckCRC64 = "invalid_CRC64";
await pageBlob.DownloadRangeToStreamAsync(stream, buffer.Length, buffer.Length, null, optionsWithCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
await TestHelper.ExpectedExceptionAsync <StorageException>(
() => pageBlob.DownloadRangeToStreamAsync(stream, buffer.Length, buffer.Length, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure),
"Calculated CRC64 does not match existing property"
);
lastCheckCRC64 = "invalid_CRC64";
await pageBlob.DownloadRangeToStreamAsync(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
storageEx = await TestHelper.ExpectedExceptionAsync <StorageException>(
() => pageBlob.DownloadRangeToStreamAsync(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithCRC64, opContextWithCRC64Check),
"Downloading more than 4MB with transactional CRC64 should not be supported");
Assert.IsInstanceOfType(storageEx.InnerException, typeof(ArgumentOutOfRangeException));
lastCheckCRC64 = null;
using (Stream blobStream = await pageBlob.OpenReadAsync(null, optionsWithCRC64, opContextWithCRC64Check))
{
blobStream.CopyTo(stream);
Assert.IsNotNull(lastCheckCRC64);
}
lastCheckCRC64 = "invalid_CRC64";
using (Stream blobStream = await pageBlob.OpenReadAsync(null, optionsWithNoCRC64, opContextWithCRC64Check))
{
blobStream.CopyTo(stream);
Assert.IsNull(lastCheckCRC64);
}
}
}
finally
{
await container.DeleteIfExistsAsync();
}
}
public async Task UseTransactionalCRC64PutTestAsync()
{
BlobRequestOptions optionsWithNoCRC64 = new BlobRequestOptions()
{
ChecksumOptions = new ChecksumOptions {
UseTransactionalCRC64 = false
}
};
BlobRequestOptions optionsWithCRC64 = new BlobRequestOptions()
{
ChecksumOptions = new ChecksumOptions {
UseTransactionalCRC64 = true
}
};
byte[] buffer = GetRandomBuffer(1024);
Crc64Wrapper hasher = new Crc64Wrapper();
hasher.UpdateHash(buffer, 0, buffer.Length);
string crc64 = hasher.ComputeHash();
string lastCheckCRC64 = null;
int checkCount = 0;
OperationContext opContextWithCRC64Check = new OperationContext();
opContextWithCRC64Check.SendingRequest += (_, args) =>
{
if (HttpRequestParsers.GetContentLength(args.Request) >= buffer.Length)
{
lastCheckCRC64 = HttpRequestParsers.GetContentCRC64(args.Request);
checkCount++;
}
};
OperationContext opContextWithCRC64CheckAndInjectedFailure = new OperationContext();
opContextWithCRC64CheckAndInjectedFailure.SendingRequest += (_, args) =>
{
args.Response.Headers.Remove(Constants.HeaderConstants.ContentCrc64Header);
args.Request.Headers.TryAddWithoutValidation(Constants.HeaderConstants.ContentCrc64Header, "dummy");
if (HttpRequestParsers.GetContentLength(args.Request) >= buffer.Length)
{
lastCheckCRC64 = HttpRequestParsers.GetContentCRC64(args.Request);
checkCount++;
}
};
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
CloudBlockBlob blockBlob = container.GetBlockBlobReference("blob1");
List <string> blockIds = GetBlockIdList(3);
checkCount = 0;
using (Stream blockData = new MemoryStream(buffer))
{
lastCheckCRC64 = "invalid_CRC64";
await blockBlob.PutBlockAsync(blockIds[0], blockData, null, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
lastCheckCRC64 = "invalid_CRC64";
blockData.Seek(0, SeekOrigin.Begin);
await blockBlob.PutBlockAsync(blockIds[1], blockData, null, null, optionsWithCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
blockData.Seek(0, SeekOrigin.Begin);
await TestHelper.ExpectedExceptionAsync <StorageException>(
() => blockBlob.PutBlockAsync(blockIds[1], blockData, null, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure),
"Calculated CRC64 does not match existing property"
);
lastCheckCRC64 = "invalid_CRC64";
blockData.Seek(0, SeekOrigin.Begin);
await blockBlob.PutBlockAsync(blockIds[2], blockData, new Checksum(crc64 : crc64), null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
}
Assert.AreEqual(3, checkCount);
checkCount = 0;
CloudAppendBlob appendBlob = container.GetAppendBlobReference("blob2");
await appendBlob.CreateOrReplaceAsync();
checkCount = 0;
using (Stream blockData = new MemoryStream(buffer))
{
lastCheckCRC64 = "invalid_CRC64";
await appendBlob.AppendBlockAsync(blockData, null, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
lastCheckCRC64 = "invalid_CRC64";
blockData.Seek(0, SeekOrigin.Begin);
await appendBlob.AppendBlockAsync(blockData, null, null, optionsWithCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
blockData.Seek(0, SeekOrigin.Begin);
await TestHelper.ExpectedExceptionAsync <StorageException>(
() => appendBlob.AppendBlockAsync(blockData, null, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure),
"Calculated CRC64 does not match existing property"
);
lastCheckCRC64 = "invalid_CRC64";
blockData.Seek(0, SeekOrigin.Begin);
await appendBlob.AppendBlockAsync(blockData, new Checksum(crc64 : crc64), null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
}
Assert.AreEqual(3, checkCount);
CloudPageBlob pageBlob = container.GetPageBlobReference("blob3");
await pageBlob.CreateAsync(buffer.Length);
checkCount = 0;
using (Stream pageData = new MemoryStream(buffer))
{
lastCheckCRC64 = "invalid_CRC64";
await pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.IsNull(lastCheckCRC64);
lastCheckCRC64 = "invalid_CRC64";
pageData.Seek(0, SeekOrigin.Begin);
await pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
pageData.Seek(0, SeekOrigin.Begin);
await TestHelper.ExpectedExceptionAsync <StorageException>(
() => pageBlob.WritePagesAsync(pageData, 0, null, null, optionsWithCRC64, opContextWithCRC64CheckAndInjectedFailure),
"Calculated CRC64 does not match existing property"
);
lastCheckCRC64 = "invalid_CRC64";
pageData.Seek(0, SeekOrigin.Begin);
await pageBlob.WritePagesAsync(pageData, 0, new Checksum(crc64 : crc64), null, optionsWithNoCRC64, opContextWithCRC64Check);
Assert.AreEqual(crc64, lastCheckCRC64);
}
Assert.AreEqual(3, checkCount);
lastCheckCRC64 = null;
blockBlob = container.GetBlockBlobReference("blob4");
checkCount = 0;
using (Stream blobStream = await blockBlob.OpenWriteAsync(null, optionsWithCRC64, opContextWithCRC64Check))
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
Assert.IsNotNull(lastCheckCRC64);
Assert.AreEqual(1, checkCount);
lastCheckCRC64 = "invalid_CRC64";
blockBlob = container.GetBlockBlobReference("blob5");
checkCount = 0;
using (Stream blobStream = await blockBlob.OpenWriteAsync(null, optionsWithNoCRC64, opContextWithCRC64Check))
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
Assert.IsNull(lastCheckCRC64);
Assert.AreEqual(1, checkCount);
lastCheckCRC64 = null;
pageBlob = container.GetPageBlobReference("blob6");
checkCount = 0;
using (Stream blobStream = await pageBlob.OpenWriteAsync(buffer.Length * 3, null, optionsWithCRC64, opContextWithCRC64Check))
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
Assert.IsNotNull(lastCheckCRC64);
Assert.AreEqual(1, checkCount);
lastCheckCRC64 = "invalid_CRC64";
pageBlob = container.GetPageBlobReference("blob7");
checkCount = 0;
using (Stream blobStream = await pageBlob.OpenWriteAsync(buffer.Length * 3, null, optionsWithNoCRC64, opContextWithCRC64Check))
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
Assert.IsNull(lastCheckCRC64);
Assert.AreEqual(1, checkCount);
}
finally
{
await container.DeleteIfExistsAsync();
}
}