/// <summary>
/// Implementation of the *RequestWithRetry methods.
/// </summary>
/// <typeparam name="TResult">The result type of the task.</typeparam>
/// <param name="retryOracle">The retry oracle.</param>
/// <param name="syncTask">The task implementation.</param>
/// <returns>A <see cref="TaskSequence"/> that performs the request with retries.</returns>
internal static TResult RequestWithRetrySyncImpl <TResult>(ShouldRetry retryOracle, SynchronousTask <TResult> syncTask)
{
int retryCount = 0;
bool shouldRetry = false;
do
{
TimeSpan delay = TimeSpan.FromMilliseconds(-1);
try
{
return(syncTask.Execute());
}
catch (TimeoutException e)
{
shouldRetry = retryOracle != null?retryOracle(retryCount ++, e, out delay) : false;
// We should just throw out the exception if we are not retrying
if (!shouldRetry)
{
throw;
}
}
catch (StorageServerException e)
{
if (e.StatusCode == HttpStatusCode.NotImplemented || e.StatusCode == HttpStatusCode.HttpVersionNotSupported)
{
throw;
}
shouldRetry = retryOracle != null?retryOracle(retryCount ++, e, out delay) : false;
// We should just throw out the exception if we are not retrying
if (!shouldRetry)
{
throw;
}
}
catch (InvalidOperationException e)
{/*
* DataServiceClientException dsce = CommonUtils.FindInnerDataServiceClientException(e);
*
* // rethrow 400 class errors immediately as they can't be retried
* // 501 (Not Implemented) and 505 (HTTP Version Not Supported) shouldn't be retried either.
* if (dsce != null &&
* ((dsce.StatusCode >= 400 && dsce.StatusCode < 500)
|| dsce.StatusCode == (int)HttpStatusCode.NotImplemented
|| dsce.StatusCode == (int)HttpStatusCode.HttpVersionNotSupported))
||{
|| throw;
||}
*/
// If it is BlobTypeMismatchExceptionMessage, we should throw without retry
if (e.Message == SR.BlobTypeMismatchExceptionMessage)
{
throw;
}
shouldRetry = retryOracle != null?retryOracle(retryCount ++, e, out delay) : false;
// We should just throw out the exception if we are not retrying
if (!shouldRetry)
{
throw;
}
}
if (shouldRetry && delay > TimeSpan.Zero)
{
Thread.Sleep(delay);
}
}while (shouldRetry);
throw new StorageClientException(
StorageErrorCode.None,
"Unexpected internal storage client error.",
System.Net.HttpStatusCode.Unused,
null,
null)
{
HelpLink = "http://go.microsoft.com/fwlink/?LinkID=182765"
};
}
internal static TResult ExecuteSyncTask <TResult>(SynchronousTask <TResult> syncTask)
{
CommonUtils.AssertNotNull("syncTask", syncTask);
return(syncTask.Execute());
}