# JupyterHub start / stop / restart script
#
# description: JupyterHub start / stop / restart script
# chkconfig: 2345 20 80
# processname: jupyterhub
# pidfile: /var/run/jupyterhub.pid

JUPYTERHUB_HOME=/usr/local/bin
JUPYTERHUB_CONFIG=/etc/ipython/jupyterhub_config.py
JUPYTERHUB_LOG=/var/log/jupyterhub.log
USER=root

case $1 in
start)
if [ ! -e /var/run/jupyterhub.pid ] || [ "$(cat /var/run/jupyterhub.pid)" == "" ]
then
    echo "Starting JupyterHub"
    su - $USER -c "${JUPYTERHUB_HOME}/jupyterhub -f ${JUPYTERHUB_CONFIG} &>> ${JUPYTERHUB_LOG} &"
else
    echo "JupyterHub is already running"
fi
;;
stop)
if [ -e /var/run/jupyterhub.pid ] && [ "$(cat /var/run/jupyterhub.pid)" != "" ]
then
    echo "Stopping JupyterHub"
    su - $USER -c "kill $(cat /var/run/jupyterhub.pid)"
    sleep 3
else
    echo "JupyterHub is not running"
fi
;;
restart)
if [ -e /var/run/jupyterhub.pid ] && [ "$(cat /var/run/jupyterhub.pid)" != "" ]
then
    echo "Stopping JupyterHub"
    su - $USER -c "kill $(cat /var/run/jupyterhub.pid)"
    sleep 3
fi
echo "Starting JupyterHub"
su - $USER -c "${JUPYTERHUB_HOME}/jupyterhub -f ${JUPYTERHUB_CONFIG} &>> ${JUPYTERHUB_LOG} &"
;;
*)
echo "Usage: `basename $0` start|stop|restart"
exit 1
;;
esac
exit 0