• 在ABP core中使用RabbitMq


    距上一篇博客的更新一集很久了,主要是最近做的事情比较杂,中间也有一个难点,就是在ABP中加入APP扫码登录,本来想些的,但是觉得这个写出来会不会让我们的系统被破解-_-||,所以想了想,就没有写。

    这篇文章主要记录一下在ABP core中使用RabbitMq,abp的版本4.30

    首先自己基础太菜,为了爬了很久的坑,最后参照的是这篇文章https://www.cnblogs.com/personball/p/7762931.html,使用了Abplus.MqMessages.RebusRabbitMqConsumer插件。本来我老早就看这篇文章了,可是一翻开里面的Github,发现是两年前的代码,以为早就没有人维护,所以就没有用,然后各种兜兜转转,饶了很多圈,中间包括去学习事件总线,ABP的后台任务等等,可是绕了半天,依然没有实现,最终又绕回来,然而让我意外的是,这个插件居然是有人维护的,我最后弄不出了的时候,去issues里提问,作者都回复得很快。

    为什么要写这些无关紧要的呢?就是希望看见这篇文章的人,不要再去尝试自己写啦(来自一个绕了一个多星期都没有写出demo的人的忠告),毕竟已经有大神为我们封装好了,何必自己重复造轮子呢,当然如果你时间比较多,那个另算。

    好了 开始我们的代码吧,直接去这里,将作者的源码下下来:https://github.com/personball/abplus,大致浏览一下里面的代码,然后重点是作者的demo,里面写了如何使用发布端和订阅端,重点看以下4个文件

    好了,开始搬进你的逻辑吧,中间还出了点小问题,在这里贴出来一下:

    如果你像我一样,发布端和消费端在同一个项目中,那么你可以直接使用消费端模块即可,无需使用发布端。在abplus对接rebus的两个模块中,发布模块使用的是单向连接方式,消费端使用的是双向连接方式,即消费端模块同时支持发布和消费

    意思已经很清楚了,只需要引入消费模块就可以了

    1、在应用层添加 Abplus.MqMessages.RebusRabbitMqConsumer程序集,

    2、在module上添加RebusRabbitMqConsumerModule依赖

    3、添加消费配置:

                #region RabbitMq消费端配置 
                Configuration.Modules.UseAbplusRebusRabbitMqConsumer()
                    .UseLogging(c => c.Log4Net())
                    .ConnectTo("amqp://admin:123456@127.0.0.1:5672/")//连接
                    .UseQueue("PayQueue")//队列名称
                    .Prefetch(100)//用于控制每次拉取的资源消耗(内存,带宽),消费速度还要看消费端自己的消息处理速度
                    .SetMaxParallelism(1)//最大并行数
                    .SetNumberOfWorkers(10)//设置最大工作线程数
                                           //配置其他选项
                    .UseOptions(x => x.SimpleRetryStrategy(maxDeliveryAttempts: 50, secondLevelRetriesEnabled: true, errorTrackingMaxAgeMinutes: 20))
                    .RegisterHandlerInAssemblys(Assembly.GetExecutingAssembly());//注册包含Hander的处理程序??//(Assembly.Load("MLCDZ.Application"));
                #endregion RabbitMq消费端配置  Assembly.GetAssembly(typeof(PayHandler))
    

     其他的就是你的发布端和消费端逻辑,说一个重点:

    消费端的handler不能写在AppService里面,需要单独写一个类来实现 

    应该说得很清楚了,不懂的请留言,最主要的是看看作者的demo。

    补充这后面遇到的一个坑,上次写这篇博客的时候,看到消费端确认就兴高采烈的跑来写博客了,结果在测试的时候,发现消费端没有应答,所以队列里的消息始终没有被消费掉,直到后来得到QQ群友的帮助才知道,原来消费端的类和方法不能有任何授权拦截,比如[AbpAuthorize]等

    如果你的报错信息如下,请检查你的逻辑是否带登录验证:

    WARN 2019-12-20 11:45:22,511 [ker 1] us.Retry.ErrorTracking.InMemErrorTracker - Unhandled exception 2 while handling message with ID "4cb46c5b-c35f-466f-964a-ae6a5b50875e"
    Abp.Authorization.AbpAuthorizationException: 当前用户没有登录到系统!
    at Abp.Authorization.AuthorizationHelper.AuthorizeAsync(IEnumerable1 authorizeAttributes) in D:GithubaspnetboilerplatesrcAbpAuthorizationAuthorizationHelper.cs:line 42 at Abp.Authorization.AuthorizationHelper.CheckPermissions(MethodInfo methodInfo, Type type) in D:GithubaspnetboilerplatesrcAbpAuthorizationAuthorizationHelper.cs:line 107 at Abp.Authorization.AuthorizationHelper.AuthorizeAsync(MethodInfo methodInfo, Type type) in D:GithubaspnetboilerplatesrcAbpAuthorizationAuthorizationHelper.cs:line 56 at Nito.AsyncEx.Synchronous.TaskExtensions.WaitAndUnwrapException(Task task) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) --- End of stack trace from previous location where exception was thrown --- at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot) --- End of stack trace from previous location where exception was thrown --- at Nito.AsyncEx.Synchronous.TaskExtensions.WaitAndUnwrapException(Task task) at Nito.AsyncEx.AsyncContext.Run(Func1 action)
    at Abp.Authorization.AuthorizationInterceptor.Intercept(IInvocation invocation) in D:GithubaspnetboilerplatesrcAbpAuthorizationAuthorizationInterceptor.cs:line 20
    at Castle.DynamicProxy.AbstractInvocation.Proceed()
    at Abp.Domain.Uow.UnitOfWorkInterceptor.PerformAsyncUow(IInvocation invocation, UnitOfWorkOptions options) in D:GithubaspnetboilerplatesrcAbpDomainUowUnitOfWorkInterceptor.cs:line 78
    at Castle.DynamicProxy.AbstractInvocation.Proceed()
    at Abp.Auditing.AuditingInterceptor.PerformAsyncAuditing(IInvocation invocation, AuditInfo auditInfo) in D:GithubaspnetboilerplatesrcAbpAuditingAuditingInterceptor.cs:line 86
    at Castle.DynamicProxy.AbstractInvocation.Proceed()
    at Castle.DynamicProxy.AbstractInvocation.Proceed()
    at Castle.Proxies.IHandleMessages1Proxy.Handle(TestMessage message) at Rebus.Pipeline.Receive.HandlerInvoker1.Invoke() in C:projects-rebusRebusRebusPipelineReceiveHandlerInvoker.cs:line 154
    at Rebus.Pipeline.Receive.DispatchIncomingMessageStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusPipelineReceiveDispatchIncomingMessageStep.cs:line 67 at Rebus.Sagas.LoadSagaDataStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusSagasLoadSagaDataStep.cs:line 66
    at Rebus.Pipeline.Receive.ActivateHandlersStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusPipelineReceiveActivateHandlersStep.cs:line 47 at Rebus.Pipeline.Receive.HandleRoutingSlipsStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusPipelineReceiveHandleRoutingSlipsStep.cs:line 42
    at Rebus.Retry.Simple.FailedMessageWrapperStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusRetrySimpleFailedMessageWrapperStep.cs:line 42 at Rebus.Pipeline.Receive.DeserializeIncomingMessageStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusPipelineReceiveDeserializeIncomingMessageStep.cs:line 34
    at Rebus.Pipeline.Receive.HandleDeferredMessagesStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusPipelineReceiveHandleDeferredMessagesStep.cs:line 121 at Rebus.Retry.FailFast.FailFastStep.Process(IncomingStepContext context, Func1 next) in C:projects-rebusRebusRebusRetryFailFastFailFastStep.cs:line 41
    at Rebus.Retry.Simple.SimpleRetryStrategyStep.DispatchWithTrackerIdentifier(Func`1 next, String identifierToTrackMessageBy, ITransactionContext transactionContext, String messageId, String secondLevelMessageId) in C:projects-rebusRebusRebusRetrySimpleSimpleRetryStrategyStep.cs:line 120

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  • 原文地址:https://www.cnblogs.com/bamboo-zhang/p/12068032.html
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