resque wrapper for monit

#!/bin/sh
# resque wrapper for monit
# see also http://mmonit.com/wiki/Monit/FAQ#pidfile

usage()
{
  echo "usage: ${0} {start|stop} <any_process_keyword>"
  exit 1
}

if [ ! $# -eq 2 ]; then
  usage
fi

pid_file=/usr/local/app/APPLICATION/shared/pids/resque.${2}.pid
log_file=/usr/local/app/APPLICATION/shared/log/resque.${2}.log

case $1 in
  start)
    echo $$ > ${pid_file}
    exec 2>&1 rake resque:work 1> ${log_file}
    ;;
  stop)
    kill `cat ${pid_file}`
    ;;
  *)
    usage
    ;;
esac
exit 0