#!/bin/sh

### BEGIN INIT INFO
# Provides:          openvswitch-vtep
# Required-Start:    $network $named $remote_fs $syslog
# Required-Stop:     $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Open vSwitch VTEP emulator
# Description:       Initializes the Open vSwitch VTEP emulator
### END INIT INFO

SYSTEMCTL_SKIP_REDIRECT=yes

. /lib/lsb/init-functions

# Include defaults if available
default=/etc/default/openvswitch-vtep
if [ -f $default ] ; then
    . $default
fi

start () {
    if [ "$ENABLE_OVS_VTEP" = "false" ]; then
        exit 0
    fi

    update-rc.d -f openvswitch-switch remove >/dev/null 2>&1
    /etc/init.d/openvswitch-switch stop

    mkdir -p "/var/run/openvswitch"

    if [ ! -e "/etc/openvswitch/conf.db" ]; then
        ovsdb-tool create /etc/openvswitch/conf.db /usr/share/openvswitch/vswitch.ovsschema
    fi

    if [ ! -e "/etc/openvswitch/vtep.db" ]; then
        ovsdb-tool create /etc/openvswitch/vtep.db /usr/share/openvswitch/vtep.ovsschema
    fi

    if [ ! -e "/etc/openvswitch/ovsclient-cert.pem" ]; then
        export RANDFILE="/root/.rnd"
        cd /etc/openvswitch && ovs-pki req ovsclient && ovs-pki self-sign ovsclient
    fi

    ovsdb-server --pidfile --detach --log-file --remote \
        punix:/var/run/openvswitch/db.sock \
        --remote=db:hardware_vtep,Global,managers \
        --private-key=/etc/openvswitch/ovsclient-privkey.pem \
        --certificate=/etc/openvswitch/ovsclient-cert.pem \
        --bootstrap-ca-cert=/etc/openvswitch/vswitchd.cacert \
        /etc/openvswitch/conf.db /etc/openvswitch/vtep.db

    modprobe openvswitch

    ovs-vswitchd --pidfile --detach --log-file \
        unix:/var/run/openvswitch/db.sock
}

stop () {
    /etc/init.d/openvswitch-switch stop
}

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

exit 0