Module: Navy::Ship

Extended by:
Ship
Included in:
Ship
Defined in:
lib/navy/ship.rb

Instance Method Summary collapse

Instance Method Details

#launch!(options) ⇒ Object 



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# File 'lib/navy/ship.rb', line 12

def launch!(options)
  $stdin.reopen("/dev/null")

  # We only start a new process group if we're not being reexecuted
  # and inheriting file descriptors from our parent
  unless ENV['NAVY_FD']
    # grandparent - reads pipe, exits when master is ready
    #  \_ parent  - exits immediately ASAP
    #      \_ unicorn master - writes to pipe when ready

    rd, wr = IO.pipe
    grandparent = $$
    if fork
      wr.close # grandparent does not write
    else
      rd.close # unicorn master does not read
      Process.setsid
      exit if fork # parent dies now
    end

    if grandparent == $$
      # this will block until HttpServer#join runs (or it dies)
      admiral_pid = (rd.readpartial(16) rescue nil).to_i
      unless admiral_pid > 1
        warn "admiral failed to start, check stderr log for details"
        exit!(1)
      end
      exit 0
    else # unicorn master process
      options[:ready_pipe] = wr
    end
  end
  # $stderr/$stderr can/will be redirected separately in the Unicorn config
  # Navy::Orders.defaults[:stderr_path]          ||= '/dev/null'
  Navy::Admiral::Orders.defaults[:stderr_path] ||= '/dev/null'
  # Navy::Captain::Orders.defaults[:stderr_path] ||= '/dev/null'
  # Navy::Orders.defaults[:stdout_path]          ||= '/dev/null'
  Navy::Admiral::Orders.defaults[:stdout_path] ||= '/dev/null'
  # Navy::Captain::Orders.defaults[:stdout_path] ||= '/dev/null'
  # cfg::SERVER[:daemonized] = true
end