Class: Sistero::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/sistero/config.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Config

Returns a new instance of Config.



37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
 
# File 'lib/sistero/config.rb', line 37

def initialize(opts = {})
  # read defaults from config file
  @cfg_file_path = opts[:cfg_file_path]
  unless @cfg_file_path
    directory = opts[:directory] || '.'

    for n in 0..100
      cfg_file_path = File.join(directory, CONFIG_FILE_NAME)
      if File.exists? cfg_file_path
        @cfg_file_path = cfg_file_path
        break
      end
      directory = File.expand_path '..', directory
      break if directory == '/'
    end

    @cfg_file_path ||= "#{ENV['HOME']}/.config/#{APP_NAME}"
  end

  @defaults = VM.new
  @vms = []

  cfg = YAML.load_file @cfg_file_path
  postprocess_cfg cfg

  cfg['defaults'].each do |key, value|
    @defaults[key] = value
  end

  @vms = cfg['vms'].map do |vm_cfg|
    vm = VM.new *@defaults
    vm.name = nil

    vm_cfg.each do |key, value|
      vm[key] = value
    end
    unless vm.user_data.nil?
      user_data = vm.user_data.dup
      VM_KEYS.each do |key|
        value = vm[key]
        if value.is_a? String
          user_data.gsub! "\#{#{key}}", value
        end
      end
      vm.user_data = user_data
    end
    raise "every vm must have a name field" unless vm.name
    vm
  end
end

Instance Attribute Details

#defaults ⇒ Object

Returns the value of attribute defaults.



24
25
26
 
# File 'lib/sistero/config.rb', line 24

def defaults
  @defaults
end

#vms ⇒ Object

Returns the value of attribute vms.



24
25
26
 
# File 'lib/sistero/config.rb', line 24

def vms
  @vms
end

Instance Method Details

#to_s ⇒ Object 



88
89
90
 
# File 'lib/sistero/config.rb', line 88

def to_s
  @vms.map(&:to_s).join "\n"
end

#vm(name) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
 
# File 'lib/sistero/config.rb', line 26

def vm name
  name ||= @defaults['name']
  raise "must set a default name or specify one" unless name
  # TODO: also handle wildcards
  vm = @vms.find do |vm|
    vm.name == name
  end
  raise "could not find vm for #{name}" unless vm
  vm
end