public virtual void Publish <T>(T message) where T : IMessage
{
var descriptor = _messageTopicResolver.Resolve(message);
var headers = _coreSessionProvider.Session.ToHeaders();
if (headers != null)
{
var rich = new RichMessageDescriptor(descriptor.MessageGroup, descriptor.MessageTopic);
foreach (var item in headers)
{
rich.Headers.Add(item.Key, item.Value);
}
descriptor = rich;
}
if (_messageStore.IsPublishedAsync(descriptor, message).GetAwaiter().GetResult())
{
_logger.LogWarning($"[{descriptor.MessageGroup}][{descriptor.MessageTopic}]Message has already published");
return;
}
var wrapper = new MessageWrapper(descriptor, message);
_messagePublisherWrapper.Publish(wrapper);
_messageStore.StoreAsync(descriptor, message).GetAwaiter().GetResult();
}
private async Task ConsumerMessageReceived(object sender, BasicDeliverEventArgs eventArgs)
{
var consumer = sender as IBasicConsumer;
var descriptor = new RichMessageDescriptor(eventArgs.Body,
eventArgs.Exchange, eventArgs.RoutingKey, eventArgs.Redelivered, eventArgs.BasicProperties?.ContentEncoding, eventArgs.BasicProperties?.ContentType, eventArgs.BasicProperties?.MessageId, eventArgs.BasicProperties?.Persistent, eventArgs.BasicProperties?.Headers);
try
{
await ProcessMessageAsync(descriptor, eventArgs.Body);
Logger.LogInformation($"处理消息成功, 即将Ack, Consumer: {eventArgs.ConsumerTag} Exchange: {descriptor.MessageGroup}, RoutingKey: {descriptor.MessageTopic}, Redelivered: {descriptor.Redelivered}");
consumer.Model.BasicAck(eventArgs.DeliveryTag, multiple: false);
}
catch (Exception ex)
{
Logger.LogError(ex, $"处理消息出错, 即将Nack并设置reueue为true, Consumer: {eventArgs.ConsumerTag} Exchange: {descriptor.MessageGroup}, RoutingKey: {descriptor.MessageTopic}, Redelivered: {descriptor.Redelivered}");
consumer.Model.BasicNack(eventArgs.DeliveryTag, multiple: false, true);
}
}
