penpot/backend/src/app/util/services.clj

40 lines
1.2 KiB
Clojure

;; This Source Code Form is subject to the terms of the Mozilla Public
;; License, v. 2.0. If a copy of the MPL was not distributed with this
;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020-2021 Andrey Antukh <niwi@niwi.nz>
(ns app.util.services
"A helpers and macros for define rpc like registry based services."
(:refer-clojure :exclude [defmethod])
(:require [app.common.data :as d]))
(defmacro defmethod
[sname & body]
(let [[mdata args body] (if (map? (first body))
[(first body) (first (rest body)) (drop 2 body)]
[nil (first body) (rest body)])
mdata (assoc mdata
::spec sname
::name (name sname))
sym (symbol (str "sm$" (name sname)))]
`(do
(def ~sym (fn ~args ~@body))
(reset-meta! (var ~sym) ~mdata))))
(def nsym-xf
(comp
(d/domap require)
(map find-ns)
(mapcat ns-publics)
(map second)
(filter #(::spec (meta %)))))
(defn scan-ns
[& nsyms]
(sequence nsym-xf nsyms))