I am create a web application with duct lein template.
Now I am looking at project.clj to see how its works.
But I don't know if I undersant correcntly this particular part:
{:dev [:project/dev :profiles/dev]
:test [:project/test :profiles/test]
:uberjar {:aot :all}
:profiles/dev {}
:profiles/test {}
:project/dev {:dependencies [[duct/generate "0.6.1"]
[reloaded.repl "0.2.1"]
[org.clojure/tools.namespace "0.2.11"]
[org.clojure/tools.nrepl "0.2.12"]
[eftest "0.1.1"]
[kerodon "0.7.0"]]
:source-paths ["dev"]
:repl-options {:init-ns user}
:env {:port "3000"}}
For example:
Whats this [:project/dev :profiles/dev] mean? and why I have a :dev key and a :project/dev key.
I know it is probably about profiles.clj file. But I did don't really understand it right.
Maybe my question seems a little bit silly, but I hope I have been myself clear.
This is described in composite profiles:
Sometimes it is useful to define a profile as a combination of other
profiles. To do this, just use a vector instead of a map as the
profile value. This can be used to avoid duplication:
{:shared {:port 9229, :protocol "https"}
:qa [:shared {:servers ["qa.mycorp.com"]}]
:stage [:shared {:servers ["stage.mycorp.com"]}]
:production [:shared {:servers ["prod1.mycorp.com", "prod1.mycorp.com"]}]}
Related
On a fresh lein new re-frame bc +handler app, if I lein uberjar or lein jar it doesnt seem to set the main class correctly. At the end of the compillation it tells me
Warning: The Main-Class specified does not exist within the jar. It may not be executable as expected. A gen-class directive may be missing in the namespace which contains the main method, or the namespace has not been AOT-compiled.
Here is the server.clj and project.clj that is created using the re-frame +handler template:
server.clj:
(ns bc.server
(:require [bc.handler :refer [handler]]
[config.core :refer [env]]
[ring.adapter.jetty :refer [run-jetty]])
(:gen-class))
(defn -main [& args]
(let [port (Integer/parseInt (or (env :port) "3000"))]
(run-jetty handler {:port port :join? false})))
project.clj:
(defproject bc "0.1.0-SNAPSHOT"
:dependencies [[org.clojure/clojure "1.10.1"]
[org.clojure/clojurescript "1.10.597"
:exclusions [com.google.javascript/closure-compiler-unshaded
org.clojure/google-closure-library
org.clojure/google-closure-library-third-party]]
[thheller/shadow-cljs "2.8.83"]
[reagent "0.8.1"]
[re-frame "0.10.9"]
[compojure "1.6.1"]
[yogthos/config "1.1.7"]
[ring "1.7.1"]]
:plugins [
[lein-shell "0.5.0"]]
:min-lein-version "2.5.3"
:source-paths ["src/clj" "src/cljs"]
:clean-targets ^{:protect false} ["resources/public/js/compiled" "target"]
:shell {:commands {"open" {:windows ["cmd" "/c" "start"]
:macosx "open"
:linux "xdg-open"}}}
:aliases {"dev" ["with-profile" "dev" "do"
["clean"]
["run" "-m" "shadow.cljs.devtools.cli" "watch" "app"]]
"prod" ["with-profile" "prod" "do"
["clean"]
["run" "-m" "shadow.cljs.devtools.cli" "release" "app"]]
"build-report" ["with-profile" "prod" "do"
["clean"]
["run" "-m" "shadow.cljs.devtools.cli" "run" "shadow.cljs.build-report" "app" "target/build-report.html"]
["shell" "open" "target/build-report.html"]]
"karma" ["with-profile" "prod" "do"
["clean"]
["run" "-m" "shadow.cljs.devtools.cli" "compile" "karma-test"]
["shell" "karma" "start" "--single-run" "--reporters" "junit,dots"]]}
:profiles
{:dev
{:dependencies [[binaryage/devtools "0.9.11"]]}
:prod { }
:uberjar {:source-paths ["env/prod/clj"]
:omit-source true
:main bc.server
:aot [bc.server]
:uberjar-name "bc.jar"
:prep-tasks ["compile" ["prod"]]}
})
It does generate a jar file when I lein uberjar but when I try to run it it errors out telling me that it does not include a main class.
What am I doing incorrectly?
Your uberjar profile calls ["compile" ["prod"]] in :prep-tasks. Your "prod" alias calls "clean" and "target" is listed in :clean-targets.
In essence, your uberjar deletes your compiled Clojure code.
You need to tell leiningen what namespace has your main function. In project.clj:
:main my.service.runner
from:
https://github.com/technomancy/leiningen/blob/master/sample.project.clj#L222
In my project.cli I have a dependency on clj-http that is used for tests only, with clj-http.client.
When I look at the uberjar file created for that project, I see that the class fils associated with this dependency are included. That makes the jar file bigger than it need be.
So, is there a way to define a dependency in clojure such that it is only used during tests, and is not included in the uberjar?
I know that I could do this in a pom.xml, but the pom.xml is generated when using clojure, so I only have recourse to something that works in the project.clj file.
To add more colour, my project.clj looks like this
(defproject aproject "0.1.0-SNAPSHOT"
:description "A project"
:dependencies [[org.clojure/clojure "1.8.0"]
[org.clojure/data.json "0.2.6"]
[compojure "1.5.0"]
[hiccup "1.0.5"]
[http-kit "2.1.18"]
[org.clojure/tools.logging "0.3.1"]
[ch.qos.logback/logback-classic "1.1.7"]
[ring/ring-devel "1.4.0"]]
:plugins [[lein-ring "0.9.7"]]
:ring {:handler aproject.core/app-routes}
:main ^:skip-aot aproject.core
:target-path "target/%s"
:resources-paths ["resources/"]
:profiles {:uberjar {:aot :all}
:dev {:dependencies [[peridot "0.4.3"]
[midje "1.8.3"]]
:plugins [[lein-midje "3.2.1"]]
:aliases {"test" ["midje"]}}
:test {:dependencies [[clj-http "3.5.0"]
[midje "1.8.3"]]
:plugins [[lein-midje "3.2.1"]]}
})
I am running the tests like this:
lein with-profile test midje :filters dt
What I am seeing is:
Exception in thread "main" java.io.FileNotFoundException: Could not locate midje/util/ecosystem__init.class or midje/util/ecosystem.clj on classpath., compiling:(/private/var/folders/7l/0fwd_7ls1m19q3_z1_tgg1w80000gn/T/form-init7253661442775183594.clj:1:125)
at clojure.lang.Compiler.load(Compiler.java:7391)
The filter probably does not affect this, but just in case the test looks like this:
(ns aproject.deployment.core
(:require [midje.sweet :refer :all]
[clj-http.client :as client]
[peridot.core :as p]
[clojure.data.json :as json]
[front-end.core :as fe]))
(facts "'aproject' deployed" :dt
(let [response (client/get "http://localhost:8080/ping")]
(response :status) => 200
))
I can see that the test profile is being triggered, and I seem to have the dependency for midje, and the plugin, but ...?
Thanks
Nathan
Add it to the :test profile, then run your tests with lein with-profile test midje :filters dt. Generate your uberjar as usual, lein uberjar and it shouldn't include the extra files.
I have a question regarding of the usage of profiles and environment variables. Is it possible to export variables with environ depending on the which profile is set? This is what I have tried (partial project.clj)
:env {:time-to-wait-for-response "72" ; in hours
:crm-address "https://app.onepagecrm.com/api/v3/"}
:profiles
{:uberjar {:omit-source true
:aot :all}
:uberwar {:omit-source true
:aot :all}
:prod {:ring {:open-browser? false
:stacktraces? false
:auto-reload? false}
{:env {:prod? true
:db-user "mailer"
:db-password "" }}
:dev {:env {:db-user "mailer"
:db-password ""}
:dependencies [[ring-mock "0.1.5"]
[ring/ring-devel "1.3.1"]
[midje "1.6.3"]]
:ring {:open-browser? false}
:plugins [[lein-midje "3.2.1"]]}})
However if I build the WAR file with lein ring uberwar(even with with-profile dev) and deploy it to Tomcat I will get db-user as nil (called with (env :db-user). However lein ring server correctly uses dev profile so it works. Is there something wrong I am doing? Or environ is not supposed to be used this way?
This reason it is not working as you expect is because you're only setting those variables when the profile is active. Once you have built a WAR file and deployed it, lein is no longer in the picture. You'll need to load these variables in a different way. If you want to stick with environ, the two options seem to be as Java system properties or environment variables.
I'm trying to run lein ragtime migrate on a heroku dyno. Normally, I would set the database path in my project.clj like so:
(defproject my-project "0.1.0-SNAPSHOT"
:min-lein-version "2.0.0"
:dependencies [[org.clojure/clojure "1.6.0"]
[org.clojure/java.jdbc "0.3.7"]
[postgresql "9.3-1102.jdbc41"]
[ragtime "0.3.9"]
[ring "1.4.0-RC1"]
[ring/ring-defaults "0.1.2"]]
:plugins [[lein-ring "0.8.13"]
[ragtime/ragtime.lein "0.3.9"]]
...
:ragtime {:migrations ragtime.sql.files/migrations
:database (System/getenv "DATABASE_URL")}
...
:profiles
{:dev {:dependencies [[javax.servlet/servlet-api "2.5"]
[ring-mock "0.1.5"]]
:test {:ragtime {:database (System/getenv "DATABASE_URL")}}})
When I run the command, I get the following error both locally and depolying over Heroku
java.lang.IllegalArgumentException: No method in multimethod 'connection' for dispatch value: postgres
Any pointers in the right direction would be very appreciated.
Ragtime 0.3.9 uses the scheme from the connection url as the dispatch value for the connection multimethod. The code is here and here. But the DATABASE_ENV from heroku doesn't have a "jdbc" but a "postgres" scheme (which makes sense, it has to be generic).
A workaround could be to add the "jdbc://" prefix:
:ragtime {:migrations ragtime.sql.files/migrations
:database ~(str "jdbc://" (System/getenv "DATABASE_URL"))}
You can also upgrade to [ragtime "0.4.0"] which doesn't use the scheme to find out how to create the connection. See the wiki for info about the upgrade path from 0.3.x
I'm making a Clojure/ClojureScript website that I deploy on Heroku. I'm using Leiningen for project management.
I want to write my stylesheets in LESS. I need the build process to compile the LESS files into CSS, then minify these CSS files; obviously, I do not want the generated CSS files to be under version control.
LESS files --lein-less--> CSS files --lein-asset-minifier--> minified CSS files
I have tried to implement this with the lein-less and lein-asset-minifier Leiningen plugins. My attempt consisted of declaring leiningen.less and minify-assets.plugin/hooks as hooks of the :uberjar task, in proper order (see code below). But running lein uberjar fails with the following error:
Uberjar aborting because jar failed: resources/public/css/site.css (No such file or directory)
So it appears the order of build steps is not enforced.
Is it possible to implement this multi-step build with these Leiningen plugins? If not, how are people doing it?
Code
Here is the relevant part of my project.clj :
(defproject sncf-cljs "0.1.0-SNAPSHOT"
;; ...
:min-lein-version "2.5.0"
:source-paths ["src/clj" "src/cljs"]
:dependencies [
;; ...
]
:plugins [
[lein-cljsbuild "1.0.4"]
[lein-environ "1.0.0"]
[lein-ring "0.9.1"]
[lein-asset-minifier "0.2.2"]
[lein-less "1.7.2"]]
:less {:source-paths ["src/less"]
:target-path "resources/public/css"}
:uberjar-name "sncf-cljs.jar"
:minify-assets {:assets
{"resources/public/css/site.min.css" "resources/public/css/site.css"}}
:cljsbuild {
;; ...
}
:profiles {
;; ...
:uberjar {:hooks [leiningen.less
leiningen.cljsbuild
minify-assets.plugin/hooks]
:env {:production true}
:aot :all
:omit-source true
:cljsbuild {:jar true
:builds {:app
{:source-paths ["env/prod/cljs"]
:compiler
{:optimizations :advanced
:pretty-print false}}}}}
:production {:ring {:open-browser? false
:stacktraces? false
:auto-reload? false}
:cljsbuild {:builds {:app {:compiler {:main "sncf-cljs.prod"}}}}
}})
I did some research because it is an interesting question. So I looked around, and could not find informations how to configure this. So I continued to search and I found a plugin for this task.
https://github.com/kumarshantanu/lein-cascade
The readme on the github page should be sufficient to solve this task.