private async Task Consumer_Received(object sender, BasicDeliverEventArgs e)
{
var consumerTag = e.ConsumerTag;
var routingKeyOrQueueName = e.RoutingKey;
var exchange = e.Exchange;
var message = "";
try
{
message = Encoding.UTF8.GetString(e.Body.Span.ToArray());
var consumer = (AsyncEventingBasicConsumerExtended)sender;
consumer.LastMessageDate = DateTime.Now;
var firstErrorTimestamp = RabbitMqUtilities.GetFirstErrorTimeStampFromMessageArgs(e.BasicProperties);
var additionalInfo = RabbitMqUtilities.GetAdditionalInfoFromMessageArgs(e.BasicProperties);
var model = consumer.Model;
var messageProcessInstruction = await GetMessageProcessInstruction(routingKeyOrQueueName, consumerTag, firstErrorTimestamp, exchange, message, additionalInfo).ConfigureAwait(false);
switch (messageProcessInstruction.Value)
{
case Constants.MessageProcessInstruction.OK:
model.BasicAck(e.DeliveryTag, false);
break;
case Constants.MessageProcessInstruction.IgnoreMessage:
model.BasicReject(e.DeliveryTag, false);
break;
case Constants.MessageProcessInstruction.IgnoreMessageWithRequeue:
model.BasicReject(e.DeliveryTag, true);
break;
case Constants.MessageProcessInstruction.RequeueMessageWithDelay:
RequeueMessageWithDelay(consumer, e, messageProcessInstruction.AdditionalInfo);
model.BasicReject(e.DeliveryTag, false);
break;
default:
model.BasicAck(e.DeliveryTag, false);
break;
}
}
catch (Exception ex)
{
await OnMessageReceiveError(routingKeyOrQueueName, consumerTag, exchange, message, ex.Message)
.ConfigureAwait(false);
}
}
private void RequeueMessageWithDelay(AsyncEventingBasicConsumerExtended consumer, BasicDeliverEventArgs deliveryArgs, string messageAdditionalInfo)
{
if (string.IsNullOrWhiteSpace(consumer.RetryQueue))
{
return;
}
var properties = consumer.Model.CreateBasicProperties();
RabbitMqUtilities.SetPropertiesSenderRequeueMessageWithDelay(properties, consumer.RetentionPeriodInRetryQueueMilliseconds, consumer.RetentionPeriodInRetryQueueMillisecondsMax);
var firstErrorTimeStamp = RabbitMqUtilities.GetFirstErrorTimeStampFromMessageArgs(deliveryArgs.BasicProperties);
SetFirstErrorTimeStampToProperties(firstErrorTimeStamp, properties);
SetMessageAdditionalInfoToProperties(messageAdditionalInfo, properties);
consumer.Model.BasicPublish(
"",
consumer.RetryQueue,
properties,
deliveryArgs.Body);
}
