malapropism

An omniconf inspired config library using malli

Latest version

malapropism is deployed to Clojars

Rationale

Configuration is one of the peripheries of our systems. It's a good place to ensure correctness. Enter malli, a library that I've really grown to appreciate.

Configuration should be flexible. Most solutions in this space assume too much.

With malapropism,

• Stick it in an atom? Yeah!
• Put it in a delay? Okay
• Keep it behind core.cache or core.memoize? Sure, why not?
• Deliver it to a promise? I could see it
• Re-compute it each and every time? I wouldn’t
• Have a single configuration? Yeah, that makes sense
• Have more than one? No one's going to stop you

Usage

(require '[org.passen.malapropism.core :as malapropism])

(def config-schema
  [:map
   [:env-key :keyword]
   [:scm-rev :string]
   [:port :int]
   [:prefix
    {:default "/api"}
    :string]])

(-> (malapropism/with-schema config-schema)
    (malapropism/with-values-from-env)
    (malapropism/with-values-from-system)
    (malapropism/with-values-from-map
      {:env-key :dev
       :scm-rev "923345"
       :port    8080
       :prefix  "/web"})
    (malapropism/verify! :verbose? true))

Consumers

These companies use malapropism. Feel free to add your company to the list.

• Splash Financial

License

Copyright © 2022-2023 Derek Passen

Released under an MIT license.