我如何在不重新启动repl的情况下停止码头服务器

Question

Let's say I have a trivial boot-clj task that uses '[pandeiro.boot-http :refer [serve]] . If I make changes and need to restart the task it would complain that the port is already in use. Is there a way to kill jetty server without having to restart repl?

Answer 1

If you want only this many people use this pattern:

(defonce running-server (atom nil))
(defn stop-server [] (@running-server))
(defn go []
  (reset! running-server
            (org.httpkit.server/run-server 
             ... your stuff here ...))

If this is a longer term project starting with something like the component framework solves this problem in a much more elegant way and allows for many dependent components (hence the name). This is a good place to get started and worth reading before starting your next project.

Answer 2

pandeiro.boot-http supports reloading of your handler so you don't have to restart the serve task. You need to configure it with :reload set to true :

On command line:

boot serve -H myapp.server/app -R wait

Or in your boot script:

(boot (serve :handler 'myapp.server/app :reload true) (wait))

For regular static files serve always returns the current version from the disk so there is no need for reloading for them.

If you really need to restart the task I guess you might be affected by issue in pandeiro.boot-http and might need to contact its maintainer.