MassTransit IJobConsumer 无法运行作业

分类：编程问答

如何解决MassTransit IJobConsumer 无法运行作业

我正在尝试使用新的 IJobConsumer，但该作业从未运行。

在我正在测试的项目中，Mediator 工作正常，以及常规（短期）消费者。我似乎唯一无法工作的是 IJobConsumer。我不确定是什么/如果我配置错误。

这是我配置 MassTransit 的方式：

            services.AddMassTransit(x =>
            {
                x.AddServiceClient();

                    x.AddRabbitMqMessageScheduler();

                    x.UsingRabbitMq((context,configurator) =>
                    {
                        configurator.UseRabbitMqMessageScheduler();

                        configurator.Host(options.AzureServiceBusHostOptions.Host);

...
                            var serviceInstanceOptions = new ServiceInstanceOptions()
                                .EnableInstanceEndpoint();

                            configurator.ServiceInstance(serviceInstanceOptions,instanceConfigurator =>
                                {
                                    instanceConfigurator.ConfigureJobServiceEndpoints(serviceConfigurator =>
                                        {
                                            serviceConfigurator.FinalizeCompleted = true;
                                        });

                                    // Extension  method that adds consumers based on my own marker interface
                                    x.AddJobConsumersFromTypeAssembly(consumerType);

                                    instanceConfigurator.ConfigureEndpoints(context);

                                    instanceConfigurator.ReceiveEndpoint("import-products",e =>
                                    {
                                        e.ConfigureConsumer<ImportProductsConsumer>(context,c =>
                                        {
                                             c.Options<JobOptions<IImportProducts>>(o => o
                                                 .SetJobTimeout(TimeSpan.FromMinutes(15))
                                                 .SetConcurrentJobLimit(10));
                                        });
                                    });
                                });

这是我得到的错误：

[13:43:14 ERR] R-FAULT rabbitmq://localhost/Job eb810000-857f-0205-07d4-08d8c69e2d13 MassTransit.Contracts.JobService.JobSubmitted MassTransit.JobService.Components.StateMachines.JobSaga(00:00:01.0258821)
Automatonymous.NotAcceptedStateMachineException: MassTransit.JobService.Components.StateMachines.JobSaga(eb810000-857f-0205-47ed-08d8c69e2b1a) Saga exception on receipt of MassTransit.Contracts.JobService.JobSubmitted: Not accepted in state AllocatingJobSlot
 ---> Automatonymous.UnhandledEventException: The JobSubmitted event is not handled during the AllocatingJobSlot state for the JobStateMachine state machine
   at Automatonymous.AutomatonymousStateMachine`1.DefaultUnhandledEventCallback(UnhandledEventContext`1 context)
   at Automatonymous.AutomatonymousStateMachine`1.UnhandledEvent(EventContext`1 context,State state)
   at Automatonymous.States.StateMachineState`1.Automatonymous.State<TInstance>.Raise[T](EventContext`2 context)
   at Automatonymous.AutomatonymousStateMachine`1.Automatonymous.StateMachine<TInstance>.RaiseEvent[T](EventContext`2 context)
   at Automatonymous.Pipeline.StateMachineSagaMessageFilter`2.Send(SagaConsumeContext`2 context,IPipe`1 next)
   --- End of inner exception stack trace ---
   at Automatonymous.Pipeline.StateMachineSagaMessageFilter`2.Send(SagaConsumeContext`2 context,IPipe`1 next)
   at Automatonymous.Pipeline.StateMachineSagaMessageFilter`2.Send(SagaConsumeContext`2 context,IPipe`1 next)
   at MassTransit.Saga.SendSagaPipe`2.Send(SagaRepositoryContext`2 context)
   at MassTransit.Saga.SendSagaPipe`2.Send(SagaRepositoryContext`2 context)
   at MassTransit.Saga.InMemoryRepository.InMemorySagaRepositoryContextFactory`1.Send[T](ConsumeContext`1 context,IPipe`1 next)
   at MassTransit.Saga.Pipeline.Filters.CorrelatedSagaFilter`2.GreenPipes.IFilter<MassTransit.ConsumeContext<TMessage>>.Send(ConsumeContext`1 context,IPipe`1 next)
[13:43:15 WRN] R-RETRY rabbitmq://localhost/Job eb810000-857f-0205-07d4-08d8c69e2d13 MassTransit.Context.RetryConsumeContext<MassTransit.Contracts.JobService.JobSubmitted>
Automatonymous.NotAcceptedStateMachineException: MassTransit.JobService.Components.StateMachines.JobSaga(eb810000-857f-0205-47ed-08d8c69e2b1a) Saga exception on receipt of MassTransit.Contracts.JobService.JobSubmitted: Not accepted in state AllocatingJobSlot
 ---> Automatonymous.UnhandledEventException: The JobSubmitted event is not handled during the AllocatingJobSlot state for the JobStateMachine state machine
   at Automatonymous.AutomatonymousStateMachine`1.DefaultUnhandledEventCallback(UnhandledEventContext`1 context)
   at Automatonymous.AutomatonymousStateMachine`1.UnhandledEvent(EventContext`1 context,IPipe`1 next)
   at MassTransit.Pipeline.Filters.InMemoryOutboxFilter`2.Send(TContext context,IPipe`1 next)
   at GreenPipes.Filters.RetryFilter`1.GreenPipes.IFilter<TContext>.Send(TContext context,IPipe`1 next)
[13:43:16 ERR] R-FAULT rabbitmq://localhost/Job eb810000-857f-0205-07d4-08d8c69e2d13 MassTransit.Contracts.JobService.JobSubmitted MassTransit.JobService.Components.StateMachines.JobSaga(00:00:00.3542862)
Automatonymous.NotAcceptedStateMachineException: MassTransit.JobService.Components.StateMachines.JobSaga(eb810000-857f-0205-47ed-08d8c69e2b1a) Saga exception on receipt of MassTransit.Contracts.JobService.JobSubmitted: Not accepted in state WaitingToStart
 ---> Automatonymous.UnhandledEventException: The JobSubmitted event is not handled during the WaitingToStart state for the JobStateMachine state machine
   at Automatonymous.AutomatonymousStateMachine`1.DefaultUnhandledEventCallback(UnhandledEventContext`1 context)
   at Automatonymous.AutomatonymousStateMachine`1.UnhandledEvent(EventContext`1 context,IPipe`1 next)
[13:43:18 ERR] R-FAULT rabbitmq://localhost/Job eb810000-857f-0205-07d4-08d8c69e2d13 MassTransit.Contracts.JobService.JobSubmitted MassTransit.JobService.Components.StateMachines.JobSaga(00:00:00.3506767)
Automatonymous.NotAcceptedStateMachineException: MassTransit.JobService.Components.StateMachines.JobSaga(eb810000-857f-0205-47ed-08d8c69e2b1a) Saga exception on receipt of MassTransit.Contracts.JobService.JobSubmitted: Not accepted in state WaitingToStart
 ---> Automatonymous.UnhandledEventException: The JobSubmitted event is not handled during the WaitingToStart state for the JobStateMachine state machine
   at Automatonymous.AutomatonymousStateMachine`1.DefaultUnhandledEventCallback(UnhandledEventContext`1 context)
   at Automatonymous.AutomatonymousStateMachine`1.UnhandledEvent(EventContext`1 context,IPipe`1 next)

解决方法

您正在为作业使用者配置两个端点，因此它会重复工作。

这个方法需要在 AddMassTransit 块的上面，这个块稍后被调用。

// Extension  method that adds consumers based on my own marker interface
x.AddJobConsumersFromTypeAssembly(consumerType);

您应该使用以下选项为您的工作消费者创建消费者定义：

class ImportProductsConsumerDefinition :
    ConsumerDefinition<ImportProductsConsumer>
{
    override Configure(...)
    {
        consumerConfigurator.Options<JobOptions<IImportProducts>>(o => o
                 .SetJobTimeout(TimeSpan.FromMinutes(15))
                 .SetConcurrentJobLimit(10));
    }
}

然后，简化您的总线配置：

configurator.ServiceInstance(serviceInstanceOptions,instanceConfigurator =>
{
    instanceConfigurator.ConfigureJobServiceEndpoints(serviceConfigurator =>
        {
            serviceConfigurator.FinalizeCompleted = true;
        });

    instanceConfigurator.ConfigureEndpoints(context);
});

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