pyrox.dev
1{ config, lib, pkgs, options }:
2
3with lib;
4
5let
6 cfg = config.services.prometheus.exporters.py-air-control;
7
8 workingDir = "/var/lib/${cfg.stateDir}";
9
10in
11{
12 port = 9896;
13 extraOpts = {
14 deviceHostname = mkOption {
15 type = types.str;
16 example = "192.168.1.123";
17 description = ''
18 The hostname of the air purification device from which to scrape the metrics.
19 '';
20 };
21 protocol = mkOption {
22 type = types.str;
23 default = "http";
24 description = ''
25 The protocol to use when communicating with the air purification device.
26 Available: [http, coap, plain_coap]
27 '';
28 };
29 stateDir = mkOption {
30 type = types.str;
31 default = "prometheus-py-air-control-exporter";
32 description = ''
33 Directory below <literal>/var/lib</literal> to store runtime data.
34 This directory will be created automatically using systemd's StateDirectory mechanism.
35 '';
36 };
37 };
38 serviceOpts = {
39 serviceConfig = {
40 DynamicUser = false;
41 StateDirectory = cfg.stateDir;
42 WorkingDirectory = workingDir;
43 ExecStart = ''
44 ${pkgs.python3Packages.py-air-control-exporter}/bin/py-air-control-exporter \
45 --host ${cfg.deviceHostname} \
46 --protocol ${cfg.protocol} \
47 --listen-port ${toString cfg.port} \
48 --listen-address ${cfg.listenAddress}
49 '';
50 Environment = [ "HOME=${workingDir}" ];
51 };
52 };
53}