I am building a server program to provide an API to a mongo database containing details of photos. All works well running it from the REPL, or if I start it using lein run.
The problems happen when I try and run the uberjar. Building the uberjar works ok:
(master) photo-api: lein uberjar
Compiling photo-api.env
Compiling photo-api.config
Compiling photo-api.core
WARNING: find-keyword already refers to: #'clojure.core/find-keyword in namespace: image-lib.core, being replaced by: #'image-lib.core/find-keyword
Compiling photo-api.db.core
Compiling photo-api.handler
Compiling photo-api.layout
Compiling photo-api.middleware
Compiling photo-api.routes.home
Compiling photo-api.routes.services
Created /Users/iain/Code/Clojure/Luminus/photo-api/target/uberjar/photo-api-0.1.0-SNAPSHOT.jar
Created /Users/iain/Code/Clojure/Luminus/photo-api/target/uberjar/photo-api.jar
(master) photo-api:
but running the jar gives an error:
(master) photo-api: java -jar target/uberjar/photo-api.jar
WARNING: find-keyword already refers to: #'clojure.core/find-keyword in namespace: image-lib.core, being replaced by: #'image-lib.core/find-keyword
read config from resource: "config.edn"
Exception in thread "main" java.lang.RuntimeException: could not start [#'photo-api.db.core/db*] due to
at mount.core$up$fn__420.invoke(core.cljc:92)
at mount.core$up.invokeStatic(core.cljc:92)
at mount.core$up.invoke(core.cljc:90)
at mount.core$bring.invokeStatic(core.cljc:210)
at mount.core$bring.invoke(core.cljc:202)
at mount.core$start.invokeStatic(core.cljc:252)
at mount.core$start.doInvoke(core.cljc:244)
at clojure.lang.RestFn.invoke(RestFn.java:397)
at mount.core$start_with_args.invokeStatic(core.cljc:350)
at mount.core$start_with_args.doInvoke(core.cljc:346)
at clojure.lang.RestFn.invoke(RestFn.java:410)
at photo_api.core$start_app.invokeStatic(core.clj:42)
at photo_api.core$start_app.invoke(core.clj:41)
at photo_api.core$_main.invokeStatic(core.clj:50)
at photo_api.core$_main.doInvoke(core.clj:49)
at clojure.lang.RestFn.invoke(RestFn.java:397)
at clojure.lang.AFn.applyToHelper(AFn.java:152)
at clojure.lang.RestFn.applyTo(RestFn.java:132)
at photo_api.core.main(Unknown Source)
Caused by: java.lang.NullPointerException
at com.mongodb.ConnectionString.<init>(ConnectionString.java:222)
at com.mongodb.MongoClientURI.<init>(MongoClientURI.java:189)
at com.mongodb.MongoClientURI.<init>(MongoClientURI.java:171)
at monger.core$connect_via_uri.invokeStatic(core.clj:230)
at monger.core$connect_via_uri.invoke(core.clj:230)
at photo_api.db.core$fn__12620.invokeStatic(core.clj:29)
at photo_api.db.core$fn__12620.invoke(core.clj:28)
at mount.core$record_BANG_.invokeStatic(core.cljc:86)
at mount.core$record_BANG_.invoke(core.cljc:85)
at mount.core$up$fn__420.invoke(core.cljc:93)
... 18 more
Or the SNAPSHOT jar.
(master) photo-api: java -jar target/uberjar/photo-api-0.1.0-SNAPSHOT.jar
Exception in thread "main" java.lang.NoClassDefFoundError: clojure/lang/Var
at photo_api.core.<clinit>(Unknown Source)
Caused by: java.lang.ClassNotFoundException: clojure.lang.Var
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 1 more
(master) photo-api:
What am I missing here? I'm guessing it's something to do with dev build and production build differences, but I can't spot anything obvious and the error messages are not a lot of help to me.
This is the project file which as far as I remember is mostly straight from the original luminus template:
(defproject photo-api "0.1.0-SNAPSHOT"
:description "API for geting data from photos db"
:url "http://soulflyer.com"
:dependencies [[cider/cider-nrepl "0.14.0"]
[clj-time "0.13.0"]
[com.google.guava/guava "20.0"]
[com.novemberain/monger "3.1.0" :exclusions [com.google.guava/guava]]
[compojure "1.6.0"]
[cprop "0.1.10"]
[funcool/struct "1.0.0"]
[luminus-immutant "0.2.3"]
[luminus-nrepl "0.1.4"]
[luminus/ring-ttl-session "0.3.2"]
[markdown-clj "0.9.99"]
[metosin/compojure-api "1.1.10"]
[metosin/muuntaja "0.3.1"]
[metosin/ring-http-response "0.9.0"]
[mount "0.1.11"]
[org.clojure/clojure "1.8.0"]
[org.clojure/tools.cli "0.3.5"]
[org.clojure/tools.logging "0.4.0"]
[org.clojure/data.json "0.2.6"]
[org.webjars.bower/tether "1.4.0"]
[org.webjars/bootstrap "4.0.0-alpha.5"]
[org.webjars/font-awesome "4.7.0"]
[org.webjars/jquery "3.1.1"]
[ring-webjars "0.2.0"]
[ring/ring-core "1.6.1"]
[ring/ring-defaults "0.3.0"]
[selmer "1.10.7"]
[image-lib "0.2.1-SNAPSHOT"]]
:min-lein-version "2.0.0"
:jvm-opts ["-server" "-Dconf=.lein-env"]
:source-paths ["src/clj"]
:test-paths ["test/clj"]
:resource-paths ["resources"]
:target-path "target/%s/"
:main ^:skip-aot photo-api.core
:plugins [[lein-cprop "1.0.3"]
[org.clojars.punkisdead/lein-cucumber "1.0.5"]
[lein-immutant "2.1.0"]]
:cucumber-feature-paths ["test/clj/features"]
:profiles
{:uberjar {:omit-source true
:aot :all
:uberjar-name "photo-api.jar"
:source-paths ["env/prod/clj"]
:resource-paths ["env/prod/resources"]}
:dev [:project/dev :profiles/dev]
:test [:project/dev :project/test :profiles/test]
:project/dev {:dependencies [[prone "1.1.4"]
[ring/ring-mock "0.3.0"]
[ring/ring-devel "1.6.1"]
[pjstadig/humane-test-output "0.8.2"]
[clj-webdriver/clj-webdriver "0.7.2"]
[org.apache.httpcomponents/httpcore "4.4"]
[org.clojure/core.cache "0.6.3"]
[org.seleniumhq.selenium/selenium-server "2.48.2"]]
:plugins [[com.jakemccrary/lein-test-refresh "0.19.0"]
[refactor-nrepl "2.3.0-SNAPSHOT"]]
:source-paths ["env/dev/clj"]
:resource-paths ["env/dev/resources"]
:repl-options {:init-ns user}
:injections [(require 'pjstadig.humane-test-output)
(pjstadig.humane-test-output/activate!)]}
:project/test {:resource-paths ["env/test/resources"]}
:profiles/dev {}
:profiles/test {}})
I think you're just missing required configuration - at least Mongo connection string.
When running in dev mode, the luminus (and cprops configuration library) uses the config from your profiles.clj. However, this is the leiningen thing and it's not available when running from uberjar.
You can specify all your "production" configuration in "config.edn" file and run uberjar like this:
java -Dconf=config.edn -jar target/uberjar/photo-api.jar
You can also use java system properties to set configuration values one by one. See http://www.luminusweb.net/docs/environment.md for more details.