I have undetermined resources that need to be fetched from a server. I tried to accomplish this by using the repeatElement() and concat() operators like this:
repeatElement(0, CurrentThreadScheduler.instance).map({ _ -> Observable<[Task]> in
// API.getTasks() uses Alamofire to request data
return API.getTasks(loggedUser, after: loggedUser.taskPullTime)
}).concat().takeWhile({ (tasks) -> Bool in
return tasks.count > 0
})
Unfortunately, repeatElement will just emit an item without waiting for the old one to be handled. I think the reason is that Alamorfire executes in a private serial queue.
However, I cannot figure out how to solve this problem.
I used the strategy inspired from here in my Android project. Everything works fine because Retrofit init HTTP request in a synchronous manner.
