#!/bin/sh

# storage-tools - Additional utilities to manage storage related tasks
# Copyright (C) 2014-2017 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# 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 <http://www.gnu.org/licenses/>.

set -e

SOFTWARE="storage-tools"
PROGRAM="cephfs-snap"

ACTION="${1}"

Usage ()
{
	echo "Usage: ${PROGRAM} {hourly|daily|weekly|hourly}" >&2
	exit 1
}

if [ -e "/etc/default/${SOFTWARE}" ]
then
	. "/etc/default/${SOFTWARE}"
fi

case "${CEPHFS_SNAP}" in
	true)
		;;

	*)
		exit 0
		;;
esac

if [ -z "${CEPHFS_DIRECTORIES}" ]
then
	echo "E: no cephfs directories defined in /etc/default/${SOFTWARE}" >&2
	exit 1
fi

case "${ACTION}" in
	hourly|daily|weekly|monthly)

		;;

	*)
		Usage
		;;
esac

# Run
DATE="$(date +%Y-%m-%d\ %H:%M:%S)"
HOST="$(hostname -f)"

TIME="$(date +%Y-%m-%d_%H%M%z)"
SNAPSHOT="${ACTION}_${TIME}"

# logfile
echo "${DATE} ${HOST} ${PROGRAM} creating ${ACTION} snapshots" >> "/var/log/${SOFTWARE}/${PROGRAM}.log"

# irc
if  [ -e /usr/bin/irk ] && [ -e "/etc/default/${SOFTWARE}" ]
then
	if [ -n "${IRK_TARGETS}" ]
	then
		for TARGET in ${IRK_TARGETS}
		do
			irk ${TARGET} "\x0312${HOST}:\x03 \x0303${PROGRAM}\x03 creating \x0307${ACTION}\x03 snapshots"
		done
	fi
fi

for CEPHFS_DIRECTORY in ${CEPHFS_DIRECTORIES}
do
	cd "${CEPHFS_DIRECTORY}"/.snap
	mkdir "${SNAPSHOT}"
done