pyrox.dev
1{ config, lib, pkgs, ... }:
2let
3 cfg = config.services.fourStoreEndpoint;
4 endpointUser = "fourstorehttp";
5 run = "${pkgs.su}/bin/su -s ${pkgs.stdenv.shell} ${endpointUser} -c";
6in
7with lib;
8{
9
10 ###### interface
11
12 options = {
13
14 services.fourStoreEndpoint = {
15
16 enable = mkOption {
17 default = false;
18 description = "Whether to enable 4Store SPARQL endpoint.";
19 };
20
21 database = mkOption {
22 default = config.services.fourStore.database;
23 description = "RDF database name to expose via the endpoint. Defaults to local 4Store database name.";
24 };
25
26 listenAddress = mkOption {
27 default = null;
28 description = "IP address to listen on.";
29 };
30
31 port = mkOption {
32 default = 8080;
33 description = "port to listen on.";
34 };
35
36 options = mkOption {
37 default = "";
38 description = "Extra CLI options to pass to 4Store's 4s-httpd process.";
39 };
40
41 };
42
43 };
44
45
46 ###### implementation
47
48 config = mkIf cfg.enable {
49
50 assertions = singleton
51 { assertion = cfg.enable -> cfg.database != "";
52 message = "Must specify 4Store database name";
53 };
54
55 users.extraUsers = singleton
56 { name = endpointUser;
57 uid = config.ids.uids.fourstorehttp;
58 description = "4Store SPARQL endpoint user";
59 };
60
61 services.avahi.enable = true;
62
63 systemd.services."4store-endpoint" = {
64 wantedBy = [ "ip-up.target" ];
65 script = ''
66 ${run} '${pkgs.rdf4store}/bin/4s-httpd -D ${cfg.options} ${if cfg.listenAddress!=null then "-H ${cfg.listenAddress}" else "" } -p ${toString cfg.port} ${cfg.database}'
67 '';
68 };
69
70 };
71
72}