Lightning.Config.Bootstrap (Lightning v2.13.3)

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Bootstrap the application environment.

This module is responsible for setting up the application environment based on the configuration provided by the user.

Usually, config calls are made in the config/runtime.exs file. This module abstracts the runtime configuration into a module that can be tested and called from other places (aside from config/runtime.exs) file.

Sourcing envs

Internally this module uses Dotenvy.source/1 to source environment variables from the .env, .env.<config_env>, and .env.<config_env>.override files. It also sources the system environment variables.

Calling configure/0 without calling source_envs/0 or Dotenvy.source/2 first will result in no environment variables being loaded.

Usage:

Lightning.Config.Bootstrap.source_envs()
Lightning.Config.Bootstrap.configure()

Summary

Functions

configure()
get_env(app, keys)

Retrieve a value nested in the application environment.

source_envs()

Functions

configure()

get_env(app, keys)

Retrieve a value nested in the application environment.

It first searches the current process's config dictionary, then falls back to the application environment.

source_envs()