#!/bin/sh

### BEGIN INIT INFO
# Provides:          OpenStack Dashboard
# Required-Start:    networking
# Required-Stop:     networking
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: OpenStack Dashboard
# Description:       Web based user interface to OpenStack services including
#                    Nova, Swift, Keystone, etc.
### END INIT INFO

RETVAL=0
DESC="openstack-dashboard"
PIDFILE="/var/run/$DESC.pid"
PYTHON=`which python`
# Centos packages openstack_dashboard under /usr/share
#MANAGE="@PYTHON_SITEPACKAGES@/openstack_dashboard/manage.py"
MANAGE="/usr/share/openstack-dashboard/manage.py"
EXEC="/usr/bin/gunicorn"
BIND="localhost"
PORT="8080"
WORKER="eventlet"
WORKERS=`grep workers /etc/openstack-dashboard/horizon-config.ini | cut -f3 -d' '`
# Increased timeout to facilitate large image uploads
TIMEOUT="200"
STATICDIR="/www/pages/static"
BRANDDIR="/opt/branding"
APPLIEDDIR="/opt/branding/applied"
TMPUPLOADDIR="/scratch/horizon"

source /usr/bin/tsconfig

start()
{
    #  Change workers if combined controller/compute
    . /etc/platform/platform.conf
    if [ "${WORKERS}" -lt "2" ]; then
        WORKERS=2
    fi

    if [ -e $PIDFILE ]; then
        PIDDIR=/proc/$(cat $PIDFILE)
        if [ -d ${PIDDIR} ]; then
            echo "$DESC already running."
            return
        else
            echo "Removing stale PID file $PIDFILE"
            rm -f $PIDFILE
        fi
    fi

    # Clean up any possible orphaned worker threads
    if lsof -t -i:${PORT} 1> /dev/null 2>&1; then
        kill $(lsof -t -i:${PORT}) > /dev/null 2>&1
    fi

    rm -rf ${TMPUPLOADDIR}
    mkdir -p ${TMPUPLOADDIR}

    echo -n "Starting $DESC..."
    
    start-stop-daemon --start --quiet --background --pidfile ${PIDFILE} \
        --make-pidfile --exec ${PYTHON} -- ${EXEC} --bind ${BIND}:${PORT} \
        --worker-class ${WORKER} --workers ${WORKERS} --timeout ${TIMEOUT} \
        --log-syslog  \
        --config '/usr/share/openstack-dashboard/guni_config.py' \
        --pythonpath '/usr/share/openstack-dashboard' \
        openstack_dashboard.wsgi
    RETVAL=$?
    if [ $RETVAL -eq 0 ]; then
        echo "done."
    else
        echo "failed."
    fi

    # now copy customer branding file to CONFIG_PATH/branding if anything updated
    sm-query service drbd-platform | grep enabled-active > /dev/null 2>&1
    IS_ACTIVE=$?

    # Handle horizon region exclusions
    if [ $IS_ACTIVE -eq 0 ]; then
        # Only copy if the file has been modified
        if ! cmp --silent ${BRANDDIR}/horizon-region-exclusions.csv ${CONFIG_PATH}/branding/horizon-region-exclusions.csv ; then
            mkdir -p ${CONFIG_PATH}/branding
            cp -r ${BRANDDIR}/horizon-region-exclusions.csv ${CONFIG_PATH}/branding 1>/dev/null 2>&1
        fi
    fi

    if ls ${BRANDDIR}/*.tgz 1> /dev/null 2>&1; then
        LATESTBRANDING=$(ls $BRANDDIR |grep '\.tgz$' | tail -n 1)
        if [ $IS_ACTIVE -eq 0 ]; then
            # Only do the copy if the tarball has changed
            if ! cmp --silent ${BRANDDIR}/${LATESTBRANDING} ${CONFIG_PATH}/branding/${LATESTBRANDING} ; then
                mkdir -p ${CONFIG_PATH}/branding
                rm -rf ${CONFIG_PATH}/branding/*.tgz
                cp -r ${BRANDDIR}/${LATESTBRANDING} ${CONFIG_PATH}/branding
            fi
        fi
    fi

    # As part of starting horizon we should kill containerized horizon so that it
    # will pickup branding changes
    kubectl --kubeconfig=/etc/kubernetes/admin.conf delete pods -n openstack -l application=horizon 1>/dev/null
}

stop()
{
    if [ ! -e $PIDFILE ]; then return; fi

    echo -n "Stopping $DESC..."

    start-stop-daemon --stop --quiet --pidfile $PIDFILE
    RETVAL=$?
    if [ $RETVAL -eq 0 ]; then
        echo "done."
    else
        echo "failed."
    fi
    rm -rf ${TMPUPLOADDIR}
    rm -f $PIDFILE
}

status()
{
    pid=`cat $PIDFILE 2>/dev/null`
    if [ -n "$pid" ]; then
        if ps -p $pid &> /dev/null ; then
            echo "$DESC is running"
            RETVAL=0
            return
        else
            RETVAL=1
        fi
    fi
    echo "$DESC is not running"
    RETVAL=3
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart|force-reload|reload)
        stop
        start
        ;;
    status)
	    status
        ;;
    *)
        echo "Usage: $0 {start|stop|force-reload|restart|reload|status}"
        RETVAL=1
        ;;
esac

exit $RETVAL