protected override async Task ConsumerReceived(object sender, BasicDeliverEventArgs eventArgs)
{
string[] result = eventArgs.RoutingKey.Split('.');
var eventName = result.Length > 1 ? result[0] : eventArgs.RoutingKey;
try
{
try
{
var props = eventArgs.BasicProperties;
var replyProps = ConsumerChannel.CreateBasicProperties();
replyProps.CorrelationId = props.CorrelationId;
var response = await ProcessEventRpc(eventArgs.RoutingKey, eventName, eventArgs.Body).ConfigureAwait(false);
var ms = new MemoryStream();
Serializer.Serialize <IIntegrationEventReply>(ms, response);
var body = ms.ToArray();
ConsumerChannel.BasicPublish(ExchangeDeclareParameters.ExchangeName, (string)response.RoutingKey, replyProps, body);
}
catch (Exception ex)
{
Logger.LogError("CreateConsumerChannel RPC Received: " + ex.Message + " - " + ex.StackTrace);
}
}
catch (Exception ex)
{
Logger.LogWarning("ConsumerReceived: " + eventName + " - " + ex.Message + " - " + ex.StackTrace);
}
// Even on exception we take the message off the queue.
// in a REAL WORLD app this should be handled with a Dead Letter Exchange (DLX).
// For more information see: https://www.rabbitmq.com/dlx.html
ConsumerChannel.BasicAck(eventArgs.DeliveryTag, multiple: false);
}
/// <summary>
/// Publishes a message to the queue using the QueueName as the routingKey.
/// </summary>
/// <typeparam name="T">The type of the message object.</typeparam>
/// <param name="msg">The message.</param>
/// <param name="exchange">[Optional] The exchange name.</param>
/// <param name="delayMilliseconds">[Optional] The delay milliseconds before the message is available in the queue.</param>
private void PublishMessage <T> (T msg, string exchange, string queueName, int delayMilliseconds)
{
// set persistent property
IBasicProperties basicProperties = null;
if (_publishPersistent)
{
if (basicProperties == null)
{
basicProperties = ConsumerChannel.CreateBasicProperties();
}
basicProperties.Persistent = _publishPersistent;
}
if (_retryDelayMilliseconds > 0)
{
if (basicProperties == null)
{
basicProperties = ConsumerChannel.CreateBasicProperties();
}
basicProperties.AddHeader("x-delay", _retryDelayMilliseconds);
}
// publish message
PublishChannel.BasicPublish(exchange: exchange ?? "",
routingKey: queueName,
basicProperties: basicProperties,
body: GetMessageContent(msg));
}