private async Task <AnnotationResultSummary> InvokeAndRetryWhenThrottled(string functionArn, string functionInput)
{
AnnotationResultSummary resultSummary;
while (true)
{
try
{
var invokeRequest = new InvokeRequest
{
FunctionName = functionArn,
Payload = functionInput,
InvocationType = "RequestResponse"
};
var payload = GetAnnotationResult(invokeRequest);
resultSummary = GetResultSummaryFromSuccessInvocation(payload);
break;
}
catch (Exception e) when(ExceptionUtilities.HasException <TooManyRequestsException>(e))
{
Logger.WriteLine($"Job {_jobIndex}: Invocation is throttled. Retry in {WaitBeforeRetry} ms.");
_numRetries++;
await Task.Delay(WaitBeforeRetry);
}
catch (Exception e) when(e.HasErrorMessage(UnknownErrorMessage))
{
Logger.WriteLine($"Job {_jobIndex}: {UnknownErrorMessage}. Retry in {WaitBeforeRetry} ms.");
_numRetries++;
await Task.Delay(WaitBeforeRetry);
}
}
return(resultSummary);
}
internal AnnotationResultSummary GetResultSummaryFromFailedInvocation(Exception e)
{
var additionalDescription = "";
if (ExceptionUtilities.HasException <TaskCanceledException>(e))
{
_errorCategory = ErrorCategory.TimeOutError;
additionalDescription = $" Annotation job was not finished in {_annotationTimeOut} milliseconds.";
}
if (_errorCategory == null)
{
_errorCategory = ExceptionUtilities.ExceptionToErrorCategory(e);
}
e = ExceptionUtilities.GetInnermostException(e);
string errorMessage = $"Failed job when invoking the annotation job: {e.Message}.{additionalDescription}";
return(AnnotationResultSummary.Create(null, _errorCategory, errorMessage));
}