module Roqua
  module StatusChecks
    module CheckLoadBalancerMember
      InvalidStatus = Class.new(StandardError)

      VALID_STATES = %w(on off)

      def self.balancer_member?(path)
        state = ::File.read(path).strip
        raise InvalidStatus, "Invalid state: #{state}" unless VALID_STATES.include?(state)
        state == "on"
      end
    end
  end
end