Contents

require 'yaml'

module Librato
  class Config < Struct.new(:options)
    def [](key)
      data[key]
    end

    def spaces
      spaces = options[:spaces] || data['spaces'] || []
      spaces.map { |space| space.is_a?(Hash) ? space : { 'name' => space } }
    end

    def account(name)
      env(name).merge(accounts[name] || {}).tap do |account|
        validate(account, name)
      end
    end

    private

      def data
        @data ||= read.tap do |data|
          data['dir'] = options[:dir] if options[:dir]
        end
      end

      def read
        File.exist?(path) ? YAML.load_file(path) : {}
      end

      def path
        options[:config] || '.librato.yml'
      end

      def accounts
        data['accounts'] || {}
      end

      def env(name)
        { 'user' => var(:user, name), 'token' => var(:token, name) }
      end

      def var(account, name)
        ENV["LIBRATO_#{account.upcase}_#{name.upcase}"]
      end

      def validate(account, name)
        %w(user token).each { |key| validate_presence(account, name, key) }
      end

      def validate_presence(hash, name, key)
        hash[key] || fail("Unknown #{key} for #{name}.")
      end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
librato-0.0.4	lib/librato/config.rb