public virtual Task OnResponseHandlerExceptionAsync(IRawConsumer rawConsumer, IConsumerConfiguration cfg, BasicDeliverEventArgs args, Exception exception)
{
_logger.LogError($"An unhandled exception was thrown in the response handler for message '{args.BasicProperties.MessageId}'.", exception);
var innerException = UnwrapInnerException(exception);
var rawException = new MessageHandlerException(
message: $"An unhandled exception was thrown when consuming a message\n MessageId: {args.BasicProperties.MessageId}\n Queue: '{cfg.Queue.FullQueueName}'\n Exchange: '{cfg.Exchange.ExchangeName}'\nSee inner exception for more details.",
inner: innerException
);
_logger.LogInformation($"Sending MessageHandlerException with CorrelationId '{args.BasicProperties.CorrelationId}'");
rawConsumer.Model.BasicPublish(
exchange: string.Empty,
routingKey: args.BasicProperties?.ReplyTo ?? string.Empty,
basicProperties: _propertiesProvider.GetProperties<MessageHandlerException>(p =>
{
p.CorrelationId = args.BasicProperties?.CorrelationId ?? string.Empty;
p.Headers.Add(PropertyHeaders.ExceptionHeader, _messageExceptionName);
}),
body: _serializer.Serialize(rawException)
);
if (!cfg.NoAck)
{
_logger.LogDebug($"Nack'ing message with delivery tag '{args.DeliveryTag}'.");
rawConsumer.Model.BasicNack(args.DeliveryTag, false, false);
}
return Task.FromResult(true);
}
public virtual Task OnResponseRecievedAsync(BasicDeliverEventArgs args, TaskCompletionSource<object> responseTcs)
{
var containsException = args?.BasicProperties?.Headers?.ContainsKey(PropertyHeaders.ExceptionHeader) ?? false;
if (containsException)
{
_logger.LogInformation($"Message '{args.BasicProperties.MessageId}' withh CorrelationId '{args.BasicProperties.CorrelationId}' contains exception. Deserialize and re-throw.");
var exceptionInfo = _serializer.Deserialize<ExceptionInformation>(args.Body);
var exception = new MessageHandlerException(exceptionInfo.Message)
{
InnerExceptionType = exceptionInfo.ExceptionType,
InnerStackTrace = exceptionInfo.StackTrace,
InnerMessage = exceptionInfo.InnerMessage
};
responseTcs.TrySetException(exception);
}
return Task.FromResult(true);
}