clomacs-httpd-start FileNotFoundException on Windows 10

[kirill-gerasimenko]

Hi,

I'm having troubles starting http server using (clomacs-httpd-start):

Debugger entered--Lisp error: (error "FileNotFoundException Could not locate clomacs__init.class or clomacs.clj on classpath.  clojure.lang.RT.load (RT.java:456)
")
  signal(error ("FileNotFoundException Could not locate clomacs__init.class or clomacs.clj on classpath.  clojure.lang.RT.load (RT.java:456)\n"))
  error("FileNotFoundException Could not locate clomacs__init.class or clomacs.clj on classpath.  clojure.lang.RT.load (RT.java:456)\n")
  clomacs-get-result((dict "status" ("eval-error" "done" "state") "ex" "class java.io.FileNotFoundException" "id" "11" "root-ex" "class java.io.FileNotFoundException" "session" "5933c6ef-b53c-4e22-9264-87d6a3825e1a" "err" "FileNotFoundException Could not locate clomacs__init.class or clomacs.clj on classpath.  clojure.lang.RT.load (RT.java:456)\n" "changed-namespaces" (dict) "repl-type" "clj") :value :string nil)
  clomacs-require((quote clomacs))
  clomacs-httpd-start()
  eval((clomacs-httpd-start) nil)
  elisp--eval-last-sexp(nil)

I'm doing some Clojure with clomacs and it's working fine (I'm able to call Clojure functions from Elisp), but I wanted to use callbacks from Clojure to Emacs and have this issue.

I have Windows 10, Java 1.8, Emacs 25.3.1, Spacemacs.

If you need more information please let me know.

Thanks!
Kirill

[kostafey]

Hello! It's very new experimental possibility and not well-documented yet.
Please, add [clomacs "0.0.3-SNAPSHOT"] to your project.clj :dependencies.
Then terminate your REPL (if running) and try again.

[kostafey]

Furthermore if you develop your own Elisp-Clojure Emacs extension, you should add library info to all related clomacs-defun wrapped functions.

(require 'clomacs)

(clomacs-defun your-libname-set-emacs-connection
               clomacs/set-emacs-connection
               :lib-name "your-libname")
(clomacs-defun your-libname-close-emacs-connection
               clomacs/close-emacs-connection
               :lib-name "your-libname")
(clomacs-defun your-libname-require
               clojure.core/require
               :lib-name "your-libname")

(defun your-libname-httpd-start ()
  (cl-flet ((clomacs-set-emacs-connection 'your-libname-set-emacs-connection)
            (clomacs-require 'your-libname-require))
    (clomacs-httpd-start)))

(defun your-libname-httpd-stop ()
  (cl-flet ((clomacs-close-emacs-connection 'your-libname-close-emacs-connection)
            (clomacs-require 'your-libname-require))
    (clomacs-httpd-stop)))

[kirill-gerasimenko]

Thanks! I'll try what you've suggested and let you know the results!

So what you are saying is that I should include such code as above in my elisp part of the plugin, then start httpd server with such custom function your-libname-httpd-start from emacs config and things should work properly? (of course after adding dependency in project.clj).

[kostafey]

Yep. But beware, anytime you run (your-libname-httpd-start), nREPL server will start too (of not yet) to be sent Emacs http server parameters (host & port) to Clojure side.
If you don't want to run (your-libname-httpd-start) in the time you load .emacs with your lib required, you can use :httpd-starter parameter for clomacs-defun
See complete example here:
https://github.com/kostafey/cm-test/blob/master/src/elisp/cm-test.el#L39
https://github.com/kostafey/cm-test/blob/master/src/clj/cm_test/core.clj#L10

In this example, when you run (cm-test-strong-emacs-version) at the first time, both nREPL server and Emacs http server will start, then Clojure side code will ask Emacs about its version, add some markdown marking chars to version string and return the result to Emacs side.

[MalloZup]

autogenerated with https://github.com/MalloZup/doghub: issue inactive since 450 days. Please update the issue or close it

[kostafey]

TODO: Update README.