os/hosts/droppie/backup-autostop.nix

35 lines
879 B
Nix

{pkgs, ...}: let
shutdownWaitMinutes = 10;
shutdownScript = pkgs.writeShellScriptBin "shutdown-wait" ''
if [ -n "''${running}" ] && [ "''${running}" = "yes" ]; then
echo "backups are still running"
exit 1
fi
echo "WARNING: System will be shut down within the next ${builtins.toString shutdownWaitMinutes} minutes" | ${pkgs.util-linux}/bin/wall
sleep 10
shutdown -P +${builtins.toString shutdownWaitMinutes}
'';
in {
systemd.services."shutdown-after-backup" = {
enable = true;
serviceConfig = {
ExecStart = "${shutdownScript}/bin/shutdown-wait";
Type = "oneshot";
};
};
systemd.timers."shutdown-after-backup" = {
enable = true;
timerConfig = {
OnCalendar = "*-*-* 02..09:00,15,30,45:00 Etc/UTC";
};
wantedBy = ["timers.target"];
partOf = ["shutdown-after-backup.service"];
};
}