Module: Moose::Inventory::Config

Extended by:
Config
Included in:
Config
Defined in:
lib/moose_inventory/config/config.rb

Overview

This Modules manages application-wide configuration options

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Attribute Details

#_argv ⇒ Object (readonly)

Returns the value of attribute _argv.



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# File 'lib/moose_inventory/config/config.rb', line 18

def _argv
  @_argv
end

#_confopts ⇒ Object (readonly)

Returns the value of attribute _confopts.



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# File 'lib/moose_inventory/config/config.rb', line 19

def _confopts
  @_confopts
end

#_settings ⇒ Object (readonly)

Returns the value of attribute _settings.



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# File 'lib/moose_inventory/config/config.rb', line 20

def _settings
  @_settings
end

Class Method Details

.ansible_args ⇒ Object 



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# File 'lib/moose_inventory/config/config.rb', line 69

def self.ansible_args  # rubocop:disable Metrics/AbcSize
  # Handle Ansible flags
  # --hosts           => list all hosts
  # --hosts HOSTNAME  => get host name
  # --groups          => list all groups

  if @_argv[0] == '--hosts'
    host = @_argv[1]
    if !host.nil?
      @_argv.clear
      ['host', 'get', "#{host}", '--ansiblestyle'].each do |arg|
        @_argv << arg
      end
    else
      @_argv.clear
      ['host', 'list', '--ansiblestyle'].each do |arg|
        @_argv << arg
      end
    end
  elsif @_argv[0] == '--groups'
    ['group', 'list', '--ansiblestyle'].each do |arg|
      @_argv << arg
    end
  end
end

.init(args) ⇒ Object 



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# File 'lib/moose_inventory/config/config.rb', line 23

def self.init(args)
  @_argv = args.dup

  top_level_args
  # ansible_args
  resolve_config_file
  load
end

.load ⇒ Object

rubocop:disable PerceivedComplexity rubocop:disable Metrics/CyclomaticComplexity, Metrics/AbcSize



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# File 'lib/moose_inventory/config/config.rb', line 142

def self.load
  newsets = symbolize_keys(YAML.load_file(@_confopts[:config]))

  path = @_confopts[:config]

  # Get the "general" section
  @_settings[:general] = newsets[:general]
  @_settings[:general].nil? && fail("Missing 'general' root in #{path}")

  # Get the config for the correct environment

  if @_confopts[:env] && !@_confopts[:env].empty?
    env = @_confopts[:env]
    @_settings[:config] = newsets[@_confopts[:env].to_sym]
  else
    env  = @_settings[:general][:defaultenv]
    (env.nil? || env.empty?) && fail("No defaultenv set in #{path}")
    @_settings[:config] = newsets[env.to_sym]
  end

  @_settings[:config].nil? && fail("Missing '#{env}' root in #{path}")

  # And now we should have a valid config stuffed into @_options[:config]
end

.resolve_config_file ⇒ Object 



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# File 'lib/moose_inventory/config/config.rb', line 96

def self.resolve_config_file # rubocop:disable Metrics/AbcSize
  if ! @_confopts[:config].nil?
    path = File.expand_path(@_confopts[:config])
    if File.exist?(path)
      @_confopts[:config] = path
    else
      fail("The configuration file #{path} does not exist")
    end
  else
    possibles = ['./.moose-tools/inventory/config',
                 '~/.moose-tools/inventory/config',
                 '~/local/etc/moose-tools/inventory/config',
                 '/etc/moose-tools/inventory/config'
                ]
    possibles.each do |f|
      file = File.expand_path(f)
      @_confopts[:config] = file if File.exist?(file)
    end
  end

  if @_confopts[:config].nil?
    fail('No configuration either given or found in standard locations.')
  end
end

.symbolize_keys(hash) ⇒ Object 



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# File 'lib/moose_inventory/config/config.rb', line 122

def self.symbolize_keys(hash)
  # rubocop:disable Style/EachWithObject
  hash.inject({}) do |result, (key, value)|
    new_key = case key
              when String then key.to_sym
              else key
              end
    new_value = case value
                when Hash then symbolize_keys(value)
                else value
                end
    result[new_key] = new_value
    result
  end
  # rubocop:enable Style/EachWithObject
end

.top_level_args ⇒ Object 



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# File 'lib/moose_inventory/config/config.rb', line 33

def self.top_level_args
  # Certain top level flags affect the configuration.
  # --config FILE  => sets the configuration file to be used.
  #                   Default is to search standard locations.
  # --env ENV      => sets the section to be used as the configuration.
  #                   Defaults to ""
  # --format FORMAT=> See formatter for supported types.
  #                   Defaults to json.

  @_confopts = { env: '', format: 'json', trace: false }

  # The following are a O(n^m) approach.  TODO: O(n) version?
    
  # Check for two-part flags   
  %w(env config format).each do |var|
    @_argv.each_with_index do |val, index|
      next if val != "--#{var}"
      @_confopts[var.to_sym] = @_argv[index + 1]
      1.downto(0) { |offset| @_argv.delete_at(index + offset) }
      break
    end
  end
  
  # Check for one-part flags
  %w(trace).each do |var|
    @_argv.each_with_index do |val, index|
      next if val != "--#{var}"
      @_confopts[var.to_sym] = true
      @_argv.delete_at(index)
      break
    end
  end
  
end