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2017-03-13
Channels
- # arachne (2)
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- # bangalore-clj (5)
- # beginners (35)
- # boot (79)
- # cider (6)
- # cljs-dev (34)
- # cljsrn (9)
- # clojure (164)
- # clojure-argentina (2)
- # clojure-austin (4)
- # clojure-italy (7)
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- # clojure-serbia (1)
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- # clojurescript (47)
- # cursive (14)
- # datascript (2)
- # datomic (8)
- # dirac (19)
- # emacs (29)
- # heroku (7)
- # hoplon (35)
- # jobs-rus (1)
- # juxt (2)
- # leiningen (1)
- # lumo (23)
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- # yada (12)
I am trying to start my clojure application on my heroku dyno but I keep getting and error in my stuartsierra.component/start.
(defrecord Listener [listener]
component/Lifecycle
(start [component]
(assoc component :listener (yada/listener
["/"
[(view/view-route)
routes/route-handler
["public/" (new-directory-resource (io/file "target/cljsbuild/public") {})]
[true (as-resource nil)]]]
(or (env :port) (get (read-config "resources/config.edn" {:profile :dev}) :webserver))
)))
(stop [component]
(when-let [close (-> component :listener :close)]
(close))
(assoc component :listener nil)))
(defn new-system []
(component/system-map
:listener (map->Listener {})
))
(def system nil)
(defn init []
(alter-var-root #'system
(constantly (new-system))))
(defn start []
(alter-var-root #'system component/start))
(defn stop []
(alter-var-root #'system
(fn [s] (when s (component/stop s)))))
(defn go []
(init)
(start))
(defn reset []
(stop)
(refresh :after 'web.core/go))
(defn -main
[& [port]]
(component/start (new-system))
(println "System Started")
@(promise))
This is my core file with all my stuartsierra.component code. This all works perfectly when I run it locally on my laptop doing lein repl
and then (go)
and also when I just do lein run
. So I am confused as to why it doesn't work when I push this to the heroku dyno.
The error I get is
Exception in thread "main" clojure.lang.ExceptionInfo: Error in component :listener in system com.stuartsierra.component.SystemMap calling #'com.stuartsierra.component/start {:reason :com.stuartsierra.component/component-function-threw-exception, :function #'com.stuartsierra.component/start, :system-key :listener, :component <#C2TLV30Q1|web>.core.Listener{:listener nil}, :system #<SystemMap>}, compiling:(/tmp/form-init9049917434081554913.clj:1:73)
This is telling me that my :listener
is ni
l in the system-map
. When I check locally (doing lein repl
(go)
) in (keys system)
is (:listener)
which is good so that means that the listener is starting and is in the system.
When I do (-> system :listener)
I get
#web.core.Listener{:listener {:port 3300, :close #object[yada.aleph$listener$fn__21671 0xa5d4865 "yada.aleph$listener$fn__21671@a5d4865"], :server #object[aleph.netty$start_server$reify__13574 0x3cc9a232 "aleph.netty$start_server$reify__13574@3cc9a232"]}}
which is perfect as the port has loaded up (3300) and the server has started.