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A Clojure library designed to make working with environment variables easier.
You’ll need Java 8 and Leiningen.
Going from 1.0.*
to 2.0.*
For security purposes, we have made masking of value display the default
behavior. If you want to see the value of a variable, simply add
:masked? false
to everything that you don’t want to mask.
Say you want to define a binding in a namespace that is filled in by the value specified in an environment variable. Here’s the very simplest way to do it:
(require '[defenv.core :refer [defenv]])
(defenv system-path "PATH")
Then, if you run @system-path
you will see the value of that
environment variable.
The project documentation contains much more example usage.
Also, you could try running DEFENV_TESTING=bob lein usage
Why does `defenv` make delayed bindings?
Well, the project contains a bit of other magic. If you don’t make a binding to a variable optional, an exception will be thrown when it is dereferenced if it isn’t set. We don’t want these exceptions to be thrown during compile time. Therefore, they must be delayed.
Why can't I load property files and declare multiple
environments in my `project.clj` and stuff?
This library was designed for https://12factor.net/ apps
Copyright © 2021 Stephen Starkey
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.