/// <summary>
/// Performs message publication.
/// </summary>
/// <typeparam name="T">Type to publish</typeparam>
/// <param name="message">Message to publish</param>
public void Publish <T>(T message)
{
var confirmableMessage = new ConfirmableMessage(message, typeof(T));
if (PublishImmediately)
{
try
{
if (_publishSettings.UsePublisherConfirms)
{
_confirmer.RecordPublicationAttempt(confirmableMessage);
}
_serviceBus.Publish(message, context => context.SetHeader("ClientMessageId", confirmableMessage.Id));
}
catch (Exception ex)
{
if (_publishSettings.UsePublisherConfirms)
{
_confirmer.RecordPublicationFailure(new[] { confirmableMessage.Id });
}
_log.Error("An error occurred while publishing to MassTransit", ex);
}
}
else
{
_unpublishedMessageBuffer.Enqueue(confirmableMessage);
}
}
private void PublishStoredMessage(ConfirmableMessage confirmableMessage, bool forcePublish = false)
{
if (PublicationEnabled || forcePublish)
{
try
{
_confirmer.RecordPublicationAttempt(confirmableMessage);
_serviceBus.Publish(confirmableMessage.Message, confirmableMessage.Type, context => context.SetHeader("ClientMessageId", confirmableMessage.Id));
}
catch (Exception ex)
{
_confirmer.RecordPublicationFailure(new[] { confirmableMessage.Id });
_log.Error("An error occurred while publishing to MassTransit", ex);
}
}
else
{
_unpublishedMessageBuffer.Enqueue(confirmableMessage);
}
}
/// <summary>
/// Used when attempting to see whether or not publishing can be restarted
/// </summary>
private void RepublishOneStoredMessage()
{
if (_publicationEnabled || Convert.ToBoolean(_processingBufferedMessages) || Convert.ToBoolean(Interlocked.CompareExchange(ref _retryingPublish, 1, 0)))
{
return;
}
try
{
ConfirmableMessage message = (_messageRepository.GetAndDeleteMessages(_publishSettings.PublisherId, 1)).FirstOrDefault();
if (message != null)
{
PublishStoredMessage(message, true);
}
}
finally
{
Interlocked.Exchange(ref _lastPublishRetryTimestamp, DateTime.UtcNow.Ticks);
Interlocked.Exchange(ref _retryingPublish, 0);
}
}
public void RecordPublicationAttempt(ConfirmableMessage message)
{
_unconfirmedMessages.TryAdd(message.Id, message);
}
