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One of the solutions to pass messages around your distributed system is a message broker. Effectively passing messages between applications was always crucial in system design. In distributed systems, communication between various applications plays an important role. Part 3 : User Access Management and Good Practice for Using RabbitMq MASSTRANSIT APP.CONFIG RABBITMQ PORT CODEPart 2 : Implement RabbitMQ in Code with MassTransit You can navigate to other part by link below : MASSTRANSIT APP.CONFIG RABBITMQ PORT SERIESUsing either Lazy or a separate thread mitigate the problem.This article is a three-part series about complete implementation of RabbitMq as message broker. In the case of Windsor, we can pass the IKernel public class Service : IService ![]() What may need to pass a reference to the container to resolve the service from. We can instantiate the service bus on a separate thread to the thread on which the Start() method is called. But what if you're not using Windsor or the container that you're using does not support lazy resolution? Threads ahoy! It better resembles the non-DI version than the previous example as the service bus creation does not occur until the Value property is accessed on the Lazy. ![]() Results in the service successfully starting everytime. Registering LazyOfTComponentLoader with the container using container.Register(Īnd then changing the service class to the following public class Service : IService Windsor has the notion of lazily resolving components with an ILaz圜omponentLoader, meaning any service and component registered with Windsor can be resolved from the container as a Lazy. This seems to be a common problem so let’s look at some ideas for how we might go about solving the problem. End of inner exception stack trace -Īt (String args)Īt .StartService(String serviceName, TimeSpan startTimeOut) > 32Exception: The service did not respond to the start or control request in a timely fashion System.InvalidOperationException: Cannot start service ServiceName on com MASSTRANSIT APP.CONFIG RABBITMQ PORT WINDOWSS.WhenStarted(service => ) blocks the Start() method from returning " in good time" resulting in the Windows Service Manager interpreting the signal as a problem with starting the service. container should be initialized in here according to Chris PattersonĬontainer = new WindsorContainer().Install(FromAssembly.This()) Taking what we did in the simple case and reworking it to use Castle Windsor for Dependency Injection, we get the following: using System This all works great for the simple case, but for a more complex and composable application we may want to use a Dependency Injection container such as Castle Windsor. X.SetDisplayName("Service display name") Ĭ.ReceiveFrom("rabbitmq://localhost/topshelf-service") Īnd installing as a service, starting, stopping and uninstalling yields S.BeforeStoppingService(sc => sc.RequestAdditionalTime(TimeSpan.FromSeconds(30))) S.BeforeStartingService(sc => sc.RequestAdditionalTime(TimeSpan.FromSeconds(30))) The Simple caseįollowing online documentation in configuring MassTransit (using RabbitMQ) with Topshelf, the simple way to configure the application is as follows: using System.Text Let’s see how MassTransit and Topshelf play together. There are extensibility points to support more advanced features such as Sagas and the Routing Slip pattern with overall focus on being straightforward to use. It is an open source service bus abstraction on top of messaging infrastructure that can be used in conjunction with MSMQ, RabbitMQ or Azure Service Bus (with plans for version 3 to support only RabbitMQ and Azure Service Bus). NET from the same guys that also wrote Topshelf. I'm assuming that if you're reading this, you've heard of MassTransit and are very likely using it with Topshelf but in case you haven’t heard, MassTransit is a lightweight Message/Service Bus for. I've experienced this a few times so thought I'd write it down here for next time! Got the message? ![]() It's a pretty frictionless experience, but there can be some a gotcha when using Topshelf in conjunction with MassTransit and Dependency Injection. In a nutshell, Topshelf is a framework that makes writing Windows Services easier you write a standard console application, add Topshelf to the mix and you now have an application that can be run as a console application whilst developing and debugging, and installed as a Windows Service when the need to deploy arises. MASSTRANSIT APP.CONFIG RABBITMQ PORT INSTALLWhenever I have a need to write a Windows Service, Topshelf is pretty much the first nuget package that I install to aid in the task. ![]()
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