Question

我无法弄清楚如何使用MassTransit 3.1.2和RabbitMQ 3.6.0发布消息事务。我有一个基本的场景，我将东西保存到数据库，然后我想发布一个事件。在我完成范围之前包装System.Transactions.TransactionScope不起作用，消息已经发送：

using (var scope = new TransactionScope(TransactionScopeOption.Required))
{
     // Save to database here.

     bus.Publish(new EntityCreatedEvent());

     // Event is already published at this point.

     scope.Complete();
}

总线创建如下：

var rabbitMqHostAddress = new Uri($"rabbitmq://{ConfigurationManager.AppSettings["RabbitMqHost"]}/");

var bus = Bus.Factory.CreateUsingRabbitMq(r =>
{
    r.Host(rabbitMqHostAddress, h =>
    {
        h.Username(ConfigurationManager.AppSettings["RabbitMqUsername"]);
        h.Password(ConfigurationManager.AppSettings["RabbitMqPassword"]);
    });
});

Answer 1

RabbitMQ不会注册交易。这是不可能的。

Answer 2

我知道这已经有一段时间了，我可能没有正确理解这个问题，但是如果您想在数据库事务完成后引发该事件，则可以执行以下操作

using (var scope = new TransactionScope(TransactionScopeOption.Required))
{
 // Save to database here.

scope.TransactionCompleted += (sender, args) => { bus.Publish(new EntityCreatedEvent()); };

 // Event is already published at this point.

 scope.Complete();
}

MassTransit交易发布

2 个答案: