require 'fileutils' module Guard class RailsRunner MAX_WAIT_COUNT = 10 attr_reader :options def initialize(options) @options = options end def start kill_unmanaged_pid! if options[:force_run] run_rails_command! wait_for_pid end def stop if File.file?(pid_file) system %{kill -SIGINT #{File.read(pid_file).strip}} wait_for_no_pid if $?.exitstatus == 0 FileUtils.rm pid_file, :force => true end end def restart stop start end def build_rails_command rails_options = [ '-e', options[:environment], '-p', options[:port], '--pid', pid_file ] rails_options << '-d' if options[:daemon] rails_options << '-u' if options[:debugger] rails_options << options[:server] if options[:server] %{sh -c 'cd #{Dir.pwd} && RAILS_ENV=#{options[:environment]} rails s #{rails_options.join(' ')} &'} end def pid_file File.expand_path("tmp/pids/#{options[:environment]}.pid") end def pid File.file?(pid_file) ? File.read(pid_file).to_i : nil end def sleep_time options[:timeout].to_f / MAX_WAIT_COUNT.to_f end private def run_rails_command! system build_rails_command end def has_pid? File.file?(pid_file) end def wait_for_pid_action sleep sleep_time end def kill_unmanaged_pid! if pid = unmanaged_pid system %{kill -KILL #{pid}} FileUtils.rm pid_file wait_for_no_pid end end def unmanaged_pid %x{lsof -n -i TCP:#{options[:port]}}.each_line { |line| if line["*:#{options[:port]} "] return line.split("\s")[1] end } nil end private def wait_for_pid wait_for_pid_loop end def wait_for_no_pid wait_for_pid_loop(false) end def wait_for_pid_loop(check_for_existince = true) count = 0 while !(check_for_existince ? has_pid? : !has_pid?) && count < MAX_WAIT_COUNT wait_for_pid_action count += 1 end !(count == MAX_WAIT_COUNT) end end end