#! /bin/bash
# Copyright © 2019 Richard Kettlewell.
#
# 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
srcdir=${srcdir:-.}
. ${srcdir}/setup.sh

# Use the wrapper
RSYNC_COMMAND="${srcdir}/rsync-wrap"

setup

# Add a second host with separate concurrency groups for each volume
echo "host host2" >> ${WORKSPACE}/config
echo "  hostname localhost" >> ${WORKSPACE}/config
echo "  volume volume1 ${WORKSPACE}/h2v1" >> ${WORKSPACE}/config
echo "    group h2v1" >> ${WORKSPACE}/config
echo "  volume volume2 ${WORKSPACE}/h2v2" >> ${WORKSPACE}/config
echo "    group h2v2" >> ${WORKSPACE}/config

mkdir ${WORKSPACE}/h2v1
echo h2v1 > ${WORKSPACE}/h2v1/h2v1.txt

mkdir ${WORKSPACE}/h2v2
echo h2v2 > ${WORKSPACE}/h2v2/h2v2.txt

echo "| Backup volumes concurrently"
# Backup just host2 so there's no crosstalk with the other host
RSYNC_WRAP_DELAY=0.5 RSBACKUP_TIME="1980-01-01T00:00:00" s ${RSBACKUP} --backup host2

start() {
    if [ -e $1 ]; then
        read current maximum < $1
    else
        current=0
        maximum=0
    fi
    current=$(($current + 1))
    if [ $current -gt $maximum ]; then
        maximum=$current
    fi
    echo $current $maximum > $1
    ls -l $1
}

stop() {
    read current maximum < $1
    current=$(($current - 1))
    echo $current $maximum > $1
}

while read time action host volume; do
  $action ${WORKSPACE}/${host}.active
done < ${WORKSPACE}/wrap.log

read current maximum < ${WORKSPACE}/host2.active
if [ $maximum != 2 ]; then
  echo "ERROR: host2 serialized" >&2
  exit 1
fi
