#! /bin/bash
# -----------------------------------------------------------------------------
# init.d script to run ONOS
#
# This provides the core for an ONOS service in a variety of environments,
# including init.d, upstart, and systemd. It can also be invoked directly.
# If it is invoked by a boot system, environment variables will usually be
# empty and the default values will be used.
# -----------------------------------------------------------------------------
### BEGIN INIT INFO
# Provides:          onos
# Required-Start:    $network $remote_fs $syslog
# Required-Stop:     $network $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: ONOS network operating system
# Description:       ONOS is a network operating system for controlling SDN networks, designed for high availablility, performance, and scale out.
### END INIT INFO


ONOS_HOME=${ONOS_HOME:-/opt/onos}
[ -f $ONOS_HOME/options ] && . $ONOS_HOME/options
ONOS_USER=${ONOS_USER:-root}
ONOS_GROUP=${ONOS_GROUP:-$ONOS_USER}
ONOS_OPTS=${ONOS_OPTS:-server}
ONOS_PID=${ONOS_PID:-/var/run/onos.pid}

start () {
    mkdir -p $ONOS_HOME/var 2>/dev/null && chown $ONOS_USER.$ONOS_GROUP $ONOS_HOME/var
    mkdir -p $ONOS_HOME/config 2>/dev/null && chown $ONOS_USER.$ONOS_GROUP $ONOS_HOME/config
    [ ! -h $ONOS_HOME/log ]  && ln -s $ONOS_HOME/karaf/data/log $ONOS_HOME/log || :
    # Start ONOS if it's not already running
    if ! status > /dev/null; then
        start-stop-daemon --signal INT --start --chuid $ONOS_USER \
            --background --exec $ONOS_HOME/bin/onos-service \
            -- $ONOS_OPTS >$ONOS_HOME/var/stdout.log 2>$ONOS_HOME/var/stderr.log
    else
        echo "ONOS/karaf is already running"
    fi
}

stop () {
    if status> /dev/null; then
        $ONOS_HOME/karaf/bin/stop
    else
        echo "ONOS/karaf is not running"
    fi
}

restart () {
        stop
        start
}

status () {
    # karaf status returns 0 if running, 1 if not
    $ONOS_HOME/karaf/bin/status
}

case $1 in
    start)
        start
	;;
    stop | force-stop)
        stop
        ;;
    restart)
        shift
        restart "$@"
        ;;
    status)
        status
        exit $?
        ;;
    *)
        echo "Usage: $0 {start|stop|restart|status}" >&2
        exit 1
        ;;
esac

exit 0