shim.clj

(ns an.aot.shim)

(def service-ns "an.aot.server")

(def handler* (atom nil))
(def handler (fn [request] (@handler* request)))

(defn init []
  (require (symbol service-ns))
  ((resolve (symbol service-ns "init")))
  (reset! handler* ((resolve (symbol service-ns "handler")))))

Specifically, you'd use this for a ring application. In your leiningen project.clj:

  :ring {:handler an.aot.shim/handler
         :init an.aot.shim/init
         :port 3333
         :open-browser? false
         :nrepl {:start? true :port 9999}
         :stacktraces? false}