/// <summary>
/// Gets the error details from an XML-formatted error stream.
/// </summary>
/// <param name="inputStream">The input stream.</param>
/// <returns>The error details.</returns>
public static async Task <StorageExtendedErrorInformation> ReadFromStreamAsync(Stream inputStream)
{
CommonUtility.AssertNotNull("inputStream", inputStream);
if (inputStream.CanSeek && inputStream.Length < 1)
{
return(null);
}
StorageExtendedErrorInformation extendedErrorInfo = new StorageExtendedErrorInformation();
try
{
using (XmlReader reader = XMLReaderExtensions.CreateAsAsync(inputStream))
{
await reader.ReadAsync().ConfigureAwait(false);
await extendedErrorInfo.ReadXmlAsync(reader, CancellationToken.None).ConfigureAwait(false);
}
return(extendedErrorInfo);
}
catch (XmlException)
{
// If there is a parsing error we cannot return extended error information
return(null);
}
}
/// <summary>
/// Gets the error details from an XML-formatted error stream.
/// </summary>
/// <param name="inputStream">The input stream.</param>
/// <returns>The error details.</returns>
public static async Task <StorageExtendedErrorInformation> ReadFromStreamAsync(Stream inputStream, CancellationToken cancellationToken)
{
CommonUtility.AssertNotNull("inputStream", inputStream);
if (inputStream.CanSeek && inputStream.Length < 1)
{
return(null);
}
StorageExtendedErrorInformation extendedErrorInfo = new StorageExtendedErrorInformation();
try
{
using (XmlReader reader = XmlReader.Create(inputStream, new XmlReaderSettings {
Async = true
}))
{
await reader.ReadAsync().ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
await extendedErrorInfo.ReadXmlAsync(reader, cancellationToken).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
}
return(extendedErrorInfo);
}
catch (XmlException)
{
// If there is a parsing error we cannot return extended error information
return(null);
}
}
public async Task ExtendedErrorInfoVerifyXmlWithAdditionalDetails()
{
Uri baseAddressUri = new Uri(TestBase.TargetTenantConfig.BlobServiceEndpoint);
CloudBlobClient client = new CloudBlobClient(baseAddressUri, TestBase.StorageCredentials);
CloudBlobContainer container = client.GetContainerReference(Guid.NewGuid().ToString("N"));
byte[] buffer = TestBase.GetRandomBuffer(4 * 1024 * 1024);
MD5 md5 = MD5.Create();
string contentMD5 = Convert.ToBase64String(md5.ComputeHash(buffer));
try
{
container.Create();
CloudBlockBlob blob = container.GetBlockBlobReference("blob1");
List <string> blocks = new List <string>();
for (int i = 0; i < 2; i++)
{
blocks.Add(Convert.ToBase64String(Guid.NewGuid().ToByteArray()));
}
using (MemoryStream memoryStream = new MemoryStream(buffer))
{
memoryStream.Seek(0, SeekOrigin.Begin);
blob.PutBlock(blocks[0], memoryStream, contentMD5);
int offset = buffer.Length - 1024;
memoryStream.Seek(offset, SeekOrigin.Begin);
StorageException e = TestHelper.ExpectedException <StorageException>(
() => blob.PutBlock(blocks[1], memoryStream, contentMD5),
"Invalid MD5 should fail with mismatch");
Assert.IsNotNull(e.RequestInformation.ExtendedErrorInformation);
StorageExtendedErrorInformation retrErrorInfo = new StorageExtendedErrorInformation();
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
StringBuilder sb = new StringBuilder();
using (XmlWriter writer = XmlWriter.Create(sb, settings))
{
e.RequestInformation.ExtendedErrorInformation.WriteXml(writer);
}
using (XmlReader reader = XMLReaderExtensions.CreateAsAsync(new MemoryStream(Encoding.Unicode.GetBytes(sb.ToString()))))
{
await retrErrorInfo.ReadXmlAsync(reader, CancellationToken.None);
}
Assert.AreEqual(e.RequestInformation.ExtendedErrorInformation.ErrorCode, retrErrorInfo.ErrorCode);
Assert.AreEqual(e.RequestInformation.ExtendedErrorInformation.ErrorMessage, retrErrorInfo.ErrorMessage);
Assert.AreNotEqual(0, retrErrorInfo.AdditionalDetails.Count);
Assert.AreEqual(e.RequestInformation.ExtendedErrorInformation.AdditionalDetails.Count, retrErrorInfo.AdditionalDetails.Count);
}
}
finally
{
container.DeleteIfExists();
}
}
public async Task ExtendedErrorInfoVerifyXml()
{
Uri baseAddressUri = new Uri(TestBase.TargetTenantConfig.BlobServiceEndpoint);
CloudBlobClient client = new CloudBlobClient(baseAddressUri, TestBase.StorageCredentials);
CloudBlobContainer container = client.GetContainerReference(Guid.NewGuid().ToString("N"));
try
{
StorageException e = TestHelper.ExpectedException <StorageException>(
() => container.GetPermissions(),
"Try to get permissions on a non-existent container");
Assert.IsNotNull(e.RequestInformation.ExtendedErrorInformation);
StorageExtendedErrorInformation retrErrorInfo = new StorageExtendedErrorInformation();
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
StringBuilder sb = new StringBuilder();
using (XmlWriter writer = XmlWriter.Create(sb, settings))
{
e.RequestInformation.ExtendedErrorInformation.WriteXml(writer);
}
using (XmlReader reader = XMLReaderExtensions.CreateAsAsync(new MemoryStream(Encoding.Unicode.GetBytes(sb.ToString()))))
{
await retrErrorInfo.ReadXmlAsync(reader, CancellationToken.None);
}
Assert.AreEqual(e.RequestInformation.ExtendedErrorInformation.ErrorCode, retrErrorInfo.ErrorCode);
Assert.AreEqual(e.RequestInformation.ExtendedErrorInformation.ErrorMessage, retrErrorInfo.ErrorMessage);
}
finally
{
container.DeleteIfExists();
}
}