Class: Docker::Template::Config

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/docker/template/config.rb

Overview

Configuration is a global version of meatadata, where anything that can be set on configuration can be optimized and stored globally in a opts.json,yml file in the current working directory.

Constant Summary collapse

DEFAULTS = 
{
  "type" => "simple",
  "user" => "envygeeks",
  "local_prefix" => "local",
  "rootfs_base_img" => "envygeeks/ubuntu:tiny",
  "maintainer" => "Jordon Bedwell <[email protected]>",
  "dockerhub_copy" => false,
  "repos_dir" => "repos",
  "copy_dir" => "copy",
  "tag" => "latest",

  "env"      => { "tag" => {}, "type" => {}, "all" => nil },
  "pkgs"     => { "tag" => {}, "type" => {}, "all" => nil },
  "entries"  => { "tag" => {}, "type" => {}, "all" => nil },
  "releases" => { "tag" => {}, "type" => {}, "all" => nil },
  "versions" => { "tag" => {}, "type" => {}, "all" => nil },
  "aliases"  => {},
  "tags"     => {}
}.freeze
EMPTY_DEFAULTS = 
{
  "tags" => { "latest" => "normal" }
}

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Config 



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# File 'lib/docker/template/config.rb', line 53

def initialize
  @config = DEFAULTS.deep_merge(read_config_from)
  @config = @config.merge(EMPTY_DEFAULTS) do |_, oval, nval|
    oval.nil? || oval.empty?? nval : oval
  end

  @config.freeze
end

Instance Method Details

#build_types ⇒ Object 



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# File 'lib/docker/template/config.rb', line 75

def build_types
  @build_types ||= %W(simple scratch).freeze
end

#read_config_from(dir = Docker::Template.root) ⇒ Object

Allows you to read a configuration file from a root and get back either the parsed data or a blank hash that can be merged the way you wish to merge it (if you even care to merge it.)



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# File 'lib/docker/template/config.rb', line 66

def read_config_from(dir = Docker::Template.root)
  file = Dir[dir.join("*.{json,yml}")].first
  return {} unless file && (file = Pathname.new(file)).file?
  return JSON.parse(file.read).stringify if file.extname == ".json"
  YAML.load_file(file).stringify
end