pub-solar-os/hosts/droppie/restic-backup.nix

54 lines
1.2 KiB
Nix
Raw Normal View History

{ pkgs, ... }:
let
shutdownWaitMinutes = 15;
2022-11-27 22:35:12 +00:00
shutdownScript = pkgs.writeShellScriptBin "shutdown-wait" ''
2022-11-27 20:36:46 +00:00
STATUS_FILES="/media/internal/backups-pub-solar/status"
2022-11-27 20:36:46 +00:00
running=""
2022-11-27 20:36:46 +00:00
for f in $STATUS_FILES; do
declare started
declare finished
2022-11-27 20:36:46 +00:00
started=$(source $f ; echo ''${BACKUP_STARTED})
finished=$(source $f ; echo ''${BACKUP_FINISHED})
2022-11-27 20:36:46 +00:00
if [ -z "''${finished}" ]; then
echo "backup $(dirname $f) still running"
running="yes"
break
fi
done
2022-11-27 20:36:46 +00:00
if [ -n "''${running}" ] && [ "''${running}" = "yes" ]; then
echo "backups are still running"
exit 1
fi
2022-11-27 20:36:46 +00:00
echo "WARNING: System will be shut down within the next 15 minutes" | wall
2022-11-27 20:36:46 +00:00
sleep 10
2022-11-27 20:36:46 +00:00
shutdown -P +${builtins.toString shutdownWaitMinutes}
'';
in
{
systemd.services."shutdown-after-backup" = {
enable = true;
serviceConfig = {
2022-11-27 22:35:12 +00:00
ExecStart = "${shutdownScript}/bin/shutdown-wait";
Type = "oneshot";
};
};
systemd.timers."shutdown-after-backup" = {
enable = true;
2022-11-27 20:36:46 +00:00
timerConfig = {
2022-12-06 11:30:59 +00:00
OnCalendar = "3..9:* Etc/UTC";
};
2022-11-27 22:11:52 +00:00
wantedBy = [ "timers.target" ];
2022-11-27 22:35:12 +00:00
partOf = [ "shutdown-after-backup.service" ];
};
}