bin/unicorn

   1 #!/home/ew/bin/ruby
   2 # -*- encoding: binary -*-
   3 require 'unicorn/launcher'
   4 require 'optparse'
   5
   6 env = "development"
   7 daemonize = false
   8 listeners = []
   9 options = { :listeners => listeners }
  10 host, port = Unicorn::Const::DEFAULT_HOST, Unicorn::Const::DEFAULT_PORT
  11 set_listener = false
  12
  13 opts = OptionParser.new("", 24, '  ') do |opts|
  14   opts.banner = "Usage: #{File.basename($0)} " \
  15                 "[ruby options] [unicorn options] [rackup config file]"
  16
  17   opts.separator "Ruby options:"
  18
  19   lineno = 1
  20   opts.on("-e", "--eval LINE", "evaluate a LINE of code") do |line|
  21     eval line, TOPLEVEL_BINDING, "-e", lineno
  22     lineno += 1
  23   end
  24
  25   opts.on("-d", "--debug", "set debugging flags (set $DEBUG to true)") do
  26     $DEBUG = true
  27   end
  28
  29   opts.on("-w", "--warn", "turn warnings on for your script") do
  30     $-w = true
  31   end
  32
  33   opts.on("-I", "--include PATH",
  34           "specify $LOAD_PATH (may be used more than once)") do |path|
  35     $LOAD_PATH.unshift(*path.split(/:/))
  36   end
  37
  38   opts.on("-r", "--require LIBRARY",
  39           "require the library, before executing your script") do |library|
  40     require library
  41   end
  42
  43   opts.separator "Unicorn options:"
  44
  45   # some of these switches exist for rackup command-line compatibility,
  46
  47   opts.on("-o", "--host HOST",
  48           "listen on HOST (default: #{Unicorn::Const::DEFAULT_HOST})") do |h|
  49     host = h
  50     set_listener = true
  51   end
  52
  53   opts.on("-p", "--port PORT",
  54           "use PORT (default: #{Unicorn::Const::DEFAULT_PORT})") do |p|
  55     port = p.to_i
  56     set_listener = true
  57   end
  58
  59   opts.on("-E", "--env ENVIRONMENT",
  60           "use ENVIRONMENT for defaults (default: development)") do |e|
  61     env = e
  62   end
  63
  64   opts.on("-D", "--daemonize", "run daemonized in the background") do |d|
  65     daemonize = d ? true : false
  66   end
  67
  68   opts.on("-P", "--pid FILE", "DEPRECATED") do |f|
  69     warn %q{Use of --pid/-P is strongly discouraged}
  70     warn %q{Use the 'pid' directive in the Unicorn config file instead}
  71     options[:pid] = File.expand_path(f)
  72   end
  73
  74   opts.on("-s", "--server SERVER",
  75           "this flag only exists for compatibility") do |s|
  76     warn "-s/--server only exists for compatibility with rackup"
  77   end
  78
  79   # Unicorn-specific stuff
  80   opts.on("-l", "--listen {HOST:PORT|PATH}",
  81           "listen on HOST:PORT or PATH",
  82           "this may be specified multiple times",
  83           "(default: #{Unicorn::Const::DEFAULT_LISTEN})") do |address|
  84     listeners << address
  85   end
  86
  87   opts.on("-c", "--config-file FILE", "Unicorn-specific config file") do |f|
  88     options[:config_file] = File.expand_path(f)
  89   end
  90
  91   # I'm avoiding Unicorn-specific config options on the command-line.
  92   # IMNSHO, config options on the command-line are redundant given
  93   # config files and make things unnecessarily complicated with multiple
  94   # places to look for a config option.
  95
  96   opts.separator "Common options:"
  97
  98   opts.on_tail("-h", "--help", "Show this message") do
  99     puts opts.to_s.gsub(/^.*DEPRECATED.*$/s, '')
 100     exit
 101   end
 102
 103   opts.on_tail("-v", "--version", "Show version") do
 104     puts "unicorn v#{Unicorn::Const::UNICORN_VERSION}"
 105     exit
 106   end
 107
 108   opts.parse! ARGV
 109 end
 110
 111 config = ARGV[0] || "config.ru"
 112 abort "configuration file #{config} not found" unless File.exist?(config)
 113
 114 if config =~ /\.ru$/
 115   # parse embedded command-line options in config.ru comments
 116   if File.open(config, "rb") { |fp| fp.sysread(fp.stat.size) } =~ /^#\\(.*)/
 117     opts.parse! $1.split(/\s+/)
 118   end
 119 end
 120
 121 require 'pp' if $DEBUG
 122
 123 app = lambda do ||
 124   # require Rack as late as possible in case $LOAD_PATH is modified
 125   # in config.ru or command-line
 126   inner_app = case config
 127   when /\.ru$/
 128     raw = File.open(config, "rb") { |fp| fp.sysread(fp.stat.size) }
 129     raw.sub!(/^__END__\n.*/, '')
 130     eval("Rack::Builder.new {(#{raw}\n)}.to_app", nil, config)
 131   else
 132     require config
 133     Object.const_get(File.basename(config, '.rb').capitalize)
 134   end
 135   pp({ :inner_app => inner_app }) if $DEBUG
 136   case env
 137   when "development"
 138     Rack::Builder.new do
 139       use Rack::CommonLogger, $stderr
 140       use Rack::ShowExceptions
 141       use Rack::Lint
 142       run inner_app
 143     end.to_app
 144   when "deployment"
 145     Rack::Builder.new do
 146       use Rack::CommonLogger, $stderr
 147       run inner_app
 148     end.to_app
 149   else
 150     inner_app
 151   end
 152 end
 153
 154 listeners << "#{host}:#{port}" if set_listener
 155
 156 if $DEBUG
 157   pp({
 158     :unicorn_options => options,
 159     :app => app,
 160     :daemonize => daemonize,
 161   })
 162 end
 163
 164 Unicorn::Launcher.daemonize! if daemonize
 165 Unicorn.run(app, options)