#!/bin/sh

# Open Infrastructure: service-tools

# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# SPDX-License-Identifier: GPL-3.0+
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

set -e

HOSTS="${*}"

if [ -z "${HOSTS}" ]
then
	echo "Usage: ${0} localhost|[HOST1 HOST2 ...]" >&2
	exit 1
fi

for HOST in ${HOSTS}
do
	case "${HOST}" in
		localhost)
			echo -n "Flushing zone memory..."

			service knot stop
			rm -rf /var/lib/knot/timers/*.mdb
			service knot start

			echo " done."
			;;

		*)
			echo -n "Flushing ${HOST} zone memory..."

			ssh "${HOST}" "sudo service knot stop && rm -rf /var/lib/knot/timers/*.mdb && sudo service knot start"

			echo " done."
			;;
	esac
done