# unicorn

description "unicorn ruby app server"

start on (local-filesystems and net-device-up IFACE=lo and runlevel [2345])
stop on runlevel [!2345]

env WORKDIR=/data
env PIDFILE=/data/tmp/pids/unicorn.pid
env CFGFILE=/data/config/unicorn.rb
env CHOWN=deploy:deploy

respawn

script
  trap "start-stop-daemon --signal HUP --stop --pidfile $PIDFILE" HUP
  [ -e $PIDFILE ] && {
    pid=$(cat $PIDFILE)
    while kill -0 $pid &>/dev/null; do sleep 2; done
  } || {
    start-stop-daemon --start --pidfile "$PIDFILE" --chdir "$WORKDIR" --chuid "$CHOWN" --exec "$WORKDIR/bin/unicorn.sh" -- -c "$CFGFILE"
  }
end script

pre-stop script
  [ -e $PIDFILE ] && kill -0 $(cat $PIDFILE) &>/dev/null && {
    start-stop-daemon --signal USR2 --stop --pidfile "$PIDFILE"
    start   # don't send TERM and KILL!
  }
end script