bin/unicorn

   1 #!/home/ew/bin/ruby
   2 require 'unicorn/launcher'
   3 require 'optparse'
   4
   5 env = "development"
   6 daemonize = false
   7 listeners = []
   8 options = { :listeners => listeners }
   9 host, port = Unicorn::Const::DEFAULT_HOST, Unicorn::Const::DEFAULT_PORT
  10 set_listener = false
  11
  12 opts = OptionParser.new("", 24, '  ') do |opts|
  13   opts.banner = "Usage: #{File.basename($0)} " \
  14                 "[ruby options] [unicorn options] [rackup config file]"
  15
  16   opts.separator "Ruby options:"
  17
  18   lineno = 1
  19   opts.on("-e", "--eval LINE", "evaluate a LINE of code") do |line|
  20     eval line, TOPLEVEL_BINDING, "-e", lineno
  21     lineno += 1
  22   end
  23
  24   opts.on("-d", "--debug", "set debugging flags (set $DEBUG to true)") do
  25     $DEBUG = true
  26   end
  27
  28   opts.on("-w", "--warn", "turn warnings on for your script") do
  29     $-w = true
  30   end
  31
  32   opts.on("-I", "--include PATH",
  33           "specify $LOAD_PATH (may be used more than once)") do |path|
  34     $LOAD_PATH.unshift(*path.split(/:/))
  35   end
  36
  37   opts.on("-r", "--require LIBRARY",
  38           "require the library, before executing your script") do |library|
  39     require library
  40   end
  41
  42   opts.separator "Unicorn options:"
  43
  44   # some of these switches exist for rackup command-line compatibility,
  45
  46   opts.on("-o", "--host HOST",
  47           "listen on HOST (default: #{Unicorn::Const::DEFAULT_HOST})") do |h|
  48     host = h
  49     set_listener = true
  50   end
  51
  52   opts.on("-p", "--port PORT",
  53           "use PORT (default: #{Unicorn::Const::DEFAULT_PORT})") do |p|
  54     port = p.to_i
  55     set_listener = true
  56   end
  57
  58   opts.on("-E", "--env ENVIRONMENT",
  59           "use ENVIRONMENT for defaults (default: development)") do |e|
  60     env = e
  61   end
  62
  63   opts.on("-D", "--daemonize", "run daemonized in the background") do |d|
  64     daemonize = d ? true : false
  65   end
  66
  67   opts.on("-P", "--pid FILE", "file to store PID (default: none)") do |f|
  68     options[:pid] = File.expand_path(f)
  69   end
  70
  71   opts.on("-s", "--server SERVER",
  72           "this flag only exists for compatibility") do |s|
  73     warn "-s/--server only exists for compatibility with rackup"
  74   end
  75
  76   # Unicorn-specific stuff
  77   opts.on("-l", "--listen {HOST:PORT|PATH}",
  78           "listen on HOST:PORT or PATH",
  79           "this may be specified multiple times",
  80           "(default: #{Unicorn::Const::DEFAULT_LISTEN})") do |address|
  81     listeners << address
  82   end
  83
  84   opts.on("-c", "--config-file FILE", "Unicorn-specific config file") do |f|
  85     options[:config_file] = File.expand_path(f)
  86   end
  87
  88   # I'm avoiding Unicorn-specific config options on the command-line.
  89   # IMNSHO, config options on the command-line are redundant given
  90   # config files and make things unnecessarily complicated with multiple
  91   # places to look for a config option.
  92
  93   opts.separator "Common options:"
  94
  95   opts.on_tail("-h", "--help", "Show this message") do
  96     puts opts
  97     exit
  98   end
  99
 100   opts.on_tail("-v", "--version", "Show version") do
 101     puts "unicorn v#{Unicorn::Const::UNICORN_VERSION}"
 102     exit
 103   end
 104
 105   opts.parse! ARGV
 106 end
 107
 108 config = ARGV[0] || "config.ru"
 109 abort "configuration file #{config} not found" unless File.exist?(config)
 110
 111 if config =~ /\.ru$/
 112   # parse embedded command-line options in config.ru comments
 113   if File.open(config, "rb") { |fp| fp.sysread(fp.stat.size) } =~ /^#\\(.*)/
 114     opts.parse! $1.split(/\s+/)
 115   end
 116 end
 117
 118 require 'pp' if $DEBUG
 119
 120 app = lambda do ||
 121   # require Rack as late as possible in case $LOAD_PATH is modified
 122   # in config.ru or command-line
 123   inner_app = case config
 124   when /\.ru$/
 125     raw = File.open(config, "rb") { |fp| fp.sysread(fp.stat.size) }
 126     raw.sub!(/^__END__\n.*/, '')
 127     eval("Rack::Builder.new {(#{raw}\n)}.to_app", nil, config)
 128   else
 129     require config
 130     Object.const_get(File.basename(config, '.rb').capitalize)
 131   end
 132   pp({ :inner_app => inner_app }) if $DEBUG
 133   case env
 134   when "development"
 135     Rack::Builder.new do
 136       use Rack::CommonLogger, $stderr
 137       use Rack::ShowExceptions
 138       use Rack::Lint
 139       run inner_app
 140     end.to_app
 141   when "deployment"
 142     Rack::Builder.new do
 143       use Rack::CommonLogger, $stderr
 144       run inner_app
 145     end.to_app
 146   else
 147     inner_app
 148   end
 149 end
 150
 151 listeners << "#{host}:#{port}" if set_listener
 152
 153 if $DEBUG
 154   pp({
 155     :unicorn_options => options,
 156     :app => app,
 157     :daemonize => daemonize,
 158   })
 159 end
 160
 161 Unicorn::Launcher.daemonize! if daemonize
 162 Unicorn.run(app, options)