#!/bin/sh
#
# Obnam test: test locking with multiple clients accessing the same repo.
#
# Copyright 2012-2014  Lars Wirzenius
#
# 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/>.

die()
{
    echo "$@" 1>&2
    exit 1
}

[ "$#" = 4 ] || die "Bad usage, read source!"

NCLIENTS="$1"
NGENERATIONS="$2"
repourl="$3"
repopath="$4"
tempdir="$(mktemp -d -t XXXXXX)"
pids="$tempdir/pids"

echo "Starting backups: $NCLIENTS clients $NGENERATIONS generations"
echo "Using temporary directory $tempdir"

for i in $(seq "$NCLIENTS")
do
    ./test-many-generations "$NGENERATIONS" "$repourl" "$repopath" \
        "client-$i" > "client-$i.output" 2>&1 &
    echo "$!" >> "$pids"
done

echo "Waiting for clients to finish... this may take a long time"
errors=0
for pid in $(cat "$pids")
do
    if ! wait "$pid"
    then
        if [ "$errors" = 0 ]
        then
            echo "at least one client failed" 1>&2
        fi
        errors=1
    fi
done

if [ "$errors" = 0 ]
then
    rm -rf "$tempdir"
fi
exit $errors