adhearsion-jruby-startup.rb

# Start Adhearsion in JRuby, while building a pidfile as soon as possible.
def ahnctl_start
  shell_command = "#{exec_ahn_async} && #{wait} && #{save_pid}"
  %x{shell_command}
end


private

# Run start in the background, since it is not daemonized.
# This also makes it easier for us to nab the PID.
def exec_ahn_async
  "( #{exec_ahn} & )"
end

# Start Adhearsion
def exec_ahn
  exec_ahn = 'rvm $(cat .ruby-version) exec bundle exec ahn start .'

  # Add action-specific options to the invoked command
  exec_ahn << ' --no-console'
end

# Wait a moment to ensure that Java has spawned.
def wait
  'sleep 1'
end

# Save the process id / PID
def save_pid
  pid_file = '/path/to/adhearsion.pid'
  "ps -fp $(/sbin/pidof java) | grep 'ahn start' | awk '{print $2}' > #{pid_file}"
end