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# GNU Shepherd --- Test transient services.
# Copyright © 2022, 2023, 2025 Ludovic Courtès <ludo@gnu.org>
#
# This file is part of the GNU Shepherd.
#
# The GNU Shepherd 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.
#
# The GNU Shepherd 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 the GNU Shepherd. If not, see <https://www.gnu.org/licenses/>.
shepherd --version
herd --version
socket="t-socket-$$"
conf="t-conf-$$"
log="t-log-$$"
pid="t-pid-$$"
herd="herd -s $socket"
trap "cat $log || true; rm -f $socket $conf $log;
test -f $pid && kill \`cat $pid\` || true; rm -f $pid" EXIT
cat > "$conf"<<EOF
(register-services
(list (service
'(transient-test1)
#:start (make-forkexec-constructor '("sleep" "600"))
#:stop (make-kill-destructor)
#:transient? #t)
(service
'(transient-test2)
#:start (make-forkexec-constructor '("sleep" "600"))
#:stop (make-kill-destructor)
#:transient? #t)))
EOF
rm -f "$pid"
shepherd -I -s "$socket" -c "$conf" -l "$log" --pid="$pid" &
# Wait till it's ready.
while ! test -f "$pid" ; do sleep 0.3 ; done
shepherd_pid="`cat $pid`"
$herd start transient-test1
$herd start transient-test2
# Stop the service and make sure it gets unregistered.
$herd status transient-test1 | grep "transient, running"
$herd stop transient-test1
$herd status transient-test1 && false
# Terminate the service and make sure it gets unregistered.
$herd status transient-test2 | grep "transient, running"
kill $($herd status transient-test2 | grep PID | sed -e's/^.*PID: \([0-9]\+\)$/\1/g')
$herd status transient-test2 && false
test $($herd status | grep transient-test | wc -l) -eq 0
# Ensure that restarting a transient service is impossible.
$herd load root "$conf"
$herd start transient-test1
$herd restart transient-test1
$herd status transient-test1 && false
$herd unload root transient-test2
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