birdtown-visit-counter/module.nix
2024-09-17 18:12:23 +03:00

83 lines
2.8 KiB
Nix

# This file is part of birdtown-visit-counter, and is © 2024 Alexander Khodyrev.
#
# Full source code is available at https://git.akho.name/akho/birdtown-visit-counter
#
# birdtown-visit-counter is free software: you can redistribute it and/or
# modify it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the License,
# or (at your option) any later version.
#
# birdtown-visit-counter 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 Affero General Public License
# for more details.
#
# You should have received a copy of the GNU Affero General Public License along
# with birdtown-visit-counter. If not, see <https://www.gnu.org/licenses/>.
inputs:
{ config, lib, pkgs, ... }:
let
inherit (pkgs.stdenv.hostPlatform) system;
cfg = config.services.birdtown-visit-counter;
inherit (lib) types mkOption mkIf;
package = inputs.self.packages."${system}".default;
in {
options.services.birdtown-visit-counter = {
enable = mkOption {
type = types.bool;
default = false;
};
listenPort = mkOption {
type = types.int;
default = 11568;
};
};
config = mkIf cfg.enable {
users.users.birdtown-visit-counter = {
group = "birdtown-visit-counter";
home = "/var/lib/birdtown-visit-counter";
isSystemUser = true;
createHome = true;
};
users.groups.birdtown-visit-counter = { };
systemd.services.birdtown-visit-counter = {
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
ExecStart =
"${package}/bin/birdtown-visit-counter -addr :${toString cfg.listenPort} -file visits.json";
User = "birdtown-visit-counter";
Group = "birdtown-visit-counter";
WorkingDirectory = "/var/lib/birdtown-visit-counter";
};
};
systemd.timers.birdtown-visits-saver = {
wantedBy = [ "timers.target" ];
timerConfig = {
OnBootSec = "10m";
OnUnitActiveSec = "10m";
Unit = "birdtown-visits-saver.service";
};
};
systemd.services.birdtown-visits-saver = {
script = ''
set -eu
if ${pkgs.curl}/bin/curl http://localhost:${toString cfg.listenPort}/visits > visits-new.json; then
cp visits-new.json "$(date +"%Y-%m-%d-%H-%M").json"
mv visits-new.json visits.json
${pkgs.findutils}/bin/find . -ctime +10 -delete
fi
'';
serviceConfig = {
Type = "oneshot";
User = "birdtown-visit-counter";
Group = "birdtown-visit-counter";
WorkingDirectory = "/var/lib/birdtown-visit-counter";
};
};
};
}