/// <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));
}
private bool CheckRetryLimit(long retryLimit, RabbitWorkMessage msg)
{
IBasicProperties properties = msg.BasicProperties;
if (retryLimit <= 0)
{
return(true);
}
// check dead-letter counter (number of times the message was dlx)
long count = msg.GetRetryCount();
// check dlx count against our threshold
if (count >= retryLimit)
{
// move message to dead-letter queue
if (String.IsNullOrEmpty(deadLetterQueue))
{
// create dead letter queue
lock (QueueName)
{
deadLetterQueue = QueueName + ".dead-letter";
deadLetterQueue = EnsureQueueExists(deadLetterQueue, Mode);
}
}
// publish message to the deadletter queue
PublishChannel.BasicPublish("", deadLetterQueue, (IBasicProperties)properties.Clone(), msg.Body);
// delete message
Ack(msg);
return(false);
}
return(true);
}
/// <summary>
/// PublishAsync Publishes a message
/// </summary>
/// <param name="event">The name of the event to publish</param>
/// <param name="data">The data of the event to publish</param>
/// <param name="options">Optional options for this Publish</param>
/// <returns>Task</returns>
public Task PublishAsync(string @event, byte[] data, IBasicProperties options = null)
{
lock (PublishChannel)
{
PublishChannel.BasicPublish(Group, @event, false, options ?? new BasicProperties(),
data);
}
return(Task.CompletedTask);
}
