Compojure Sessions with Sandbar
I just finished researching how to achieve persistent sessions with Compojure. The default way of doing things didn’t really look appealing to me. This whole threadsafeness business is more of a hindrance than an asset when it comes to web development IMO.
Sandbar‘s stateful sessions looked just like what I want from session handling though so I decided to try it out.
To get things to work this time I had to basically replace the contents of my lib folder I’ve used for the prior tutorials in this series with the ones from sandbar, the dependency hell saga continues. A really crappy and frustrating feature of Java development it seems.
(ns hello-world
(:use compojure.core
ring.adapter.jetty
sandbar.stateful-session))
(defroutes main-routes
(GET "/fname*" [fname]
(do
(session-put! :name fname)
(str fname " was put in the session.")))
(GET "/hi*" []
(str "Hi " (session-get :name "unknown")))
(ANY "*" []
{:status 404, :body "<h1>Page not found</h1>"}))
(def app (-> main-routes
wrap-stateful-session))
(run-jetty (var app) {:join? false :port 8080})So if you first go to http://localhost:8080/hi you will get “Hi unknown”, then go to http://localhost:8080/fname/?fname=henrik and back to http://localhost:8080/hi and you get “Hi henrik”.