/
in_memory.clj
62 lines (45 loc) · 1.92 KB
/
in_memory.clj
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(ns com.brunobonacci.oneconfig.backends.in-memory
(:refer-clojure :exclude [find load list])
(:require [com.brunobonacci.oneconfig.backend :refer :all]
[com.brunobonacci.oneconfig.util :refer :all]))
(defprotocol TestStore
(data [this]))
(deftype InMemoryConfigBackend [store]
TestStore
(data [_] store)
IConfigBackend
(find [this {:keys [key env version] :as config-entry}]
(let [sem-ver (->> (get-in store [env key])
keys
(filter #(< (compare % (comparable-version version)) 1))
(sort #(compare %2 %1))
first)]
(if-let [changeset (get-in store [env key sem-ver])]
(get changeset (-> changeset keys ((partial apply max)))))))
(load [_ {:keys [key env version change-num] :as config-entry}]
(if (nil? change-num)
(if-let [changeset (get-in store [env key (comparable-version version)])]
(get changeset (-> changeset keys ((partial apply max)))))
(get-in store [env key (comparable-version version) change-num])))
(save [_ config-entry]
(InMemoryConfigBackend.
(let [{:keys [key env version value]
:as entry} (merge {:content-type "edn"} config-entry)
zver (comparable-version version)]
(update-in store [env key zver]
(fn [ov]
(if-not ov
{0 (assoc entry :change-num 0 :zver zver)}
(let [change-num (-> ov keys ((partial apply max)) inc)]
(assoc ov change-num
(assoc entry :change-num change-num :zver zver)))))))))
(list [this filters]
(->> store
vals
(mapcat vals) ;need to remove the nested structure and just get a seq of enties
(mapcat vals)
(mapcat vals)
(list-entries filters))))
(defn in-memory-config-backend
[]
(InMemoryConfigBackend. {}))