wetty

#!/bin/sh
### BEGIN INIT INFO
# Provides:          wetty
# Required-Start: $local_fs $remote_fs $network $syslog
# Required-Stop: $local_fs $remote_fs $network $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start wetty daemon
# Description:       Start/stop wetty
### END INIT INFO
# ——————————————————————————
# /etc/init.d/wetty
# in case of insserv: warning: current stop runlevel(s) (empty) of script `wetty' overrides LSB defaults (0 1 6).
# use insserv -d /etc/init.d/wetty
#
# "/etc/init.d/wetty" and issuing the command
# "update-rc.d wetty defaults 99″
# ——————————————————————————
NAME="wetty"
PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin"
APPDIR="/"
APPBIN=$(which node)
APPARGS="/home/glats/programs/wetty/index.js --base=/"
USER="root"
GROUP="root"

# Include functions
. /lib/lsb/init-functions

start() {
  log_daemon_msg "Starting '$NAME'"
  start-stop-daemon --start --chuid "$USER:$GROUP" --background --make-pidfile --pidfile /var/run/$NAME.pid --chdir "$APPDIR" --exec "$APPBIN" -- $APPARGS || true
  log_end_msg 0
}

#We need this function to ensure the whole process tree will be killed
killtree() {
    local _pid=$1
    local _sig=${2-TERM}
    for _child in $(ps -o pid --no-headers --ppid ${_pid}); do
        killtree ${_child} ${_sig}
    done
    kill -${_sig} ${_pid}
}

stop() {
  log_daemon_msg "Stopping '$NAME'"
  [ -z `cat /var/run/$NAME.pid 2>/dev/null` ] || \
  while test -d /proc/$(cat /var/run/$NAME.pid); do
    killtree $(cat /var/run/$NAME.pid) 15
    sleep 0.5
  done
  [ -z `cat /var/run/$NAME.pid 2>/dev/null` ] || rm /var/run/$NAME.pid
  log_end_msg 0
}

status() {
  status_of_proc $APPBIN $NAME && exit 0 || exit $?
}

case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart)
    stop
    start
    ;;
  status)
    status
    ;;
  *)
    echo "Usage: $NAME {start|stop|restart|status}" >&2
    exit 1
    ;;
esac

exit 0