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7
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Monthly Downloads: 4
Programming language: Elixir
License: Mozilla Public License 1.1
Tags: Debugging    
Latest version: v0.3.0

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README

Booter

Build Status

Complex applications can be composed of multiple subsystems or groups or processes, independants or dependants of each others. And starting theses subsystems is not easy as :application.start/2 or a supervisor child spec.

Booter allows modules to define a list of boot steps using Module attributes. Each step define what to call, what it requires and enables. A directed acyclic graph is then created from theses steps, and called in the correct order.

Inspired/adapted to Elixir by RabbitMQ's boot process implemented in rabbit.erl and rabbit_misc.erl. For an in-depth explaination, read Alvaro Videla's article and slides.

Usage

Read the API documentation for full usage.

Defining boot steps

Using Booter and the boot_step/3 macro:

defmodule MyModule do
  use Booter

  # without name (__MODULE__ is assumed)
  boot_step mfa: {mod, fun, args}, requires: :required_step, enables: :another_step

  # with name
  boot_step :awesome_name, mfa: {mod, fun, args}, requires: :required_step, enables: :another_step

  # With name and description
  boot_step :awesome_name, "Unicorn generator", mfa: {mod,fun,args}, requires: :rainbow_server, enables: :magic
end

Start boot

Just call Booter.boot!. Can raise exceptions.