EasyNetQ / RabbitMQ consuming events in Web API

Question

I have created Web API which allows messages to be sent to the Queue. My Web API is designed with CQRS and DDD in mind. I want my message consumer to always be waiting for any messages on the queue to receive. Currently the way its done, this will only read messages if I make a request to the API to hit the method. Is there a way of either using console application or something that will always be running to consume messages at anytime given without having to make a request from the Web Api. So more of a automation task ? If so, how do I go about with it i.e. if its console app how would I keep it always running (IIS ?) and is there way to use Dependency Injection as I need to consume the message then send to my repository which lives on separate solution. ? or a way to make EasyNetQ run at start up ?

Answer 1

The best way to handle this situation in your case is to subscribe to bus events using AMPQ through EasyNetQ library. The recommended way of hosting it is by writing a windows service using topshelf library and subscribe to bus events inside that service on start.

IIS processes and threads are not reliable for such tasks as they are designed to be recycled on a regular basis which may cause some instabilities and inconsistencies in your application.

and is there way to use Dependency Injection as I need to consume the message then send to my repository which lives on separate solution.

It is better to create a separate question for this, as it is obviously off-topic. Also, it requires a further elaboration as it is not clear what specifically you are struggling with.