pyrox.dev
1{
2 config,
3 pkgs,
4 lib,
5 utils,
6 ...
7}:
8
9let
10 cfg = config.services.docuum;
11 inherit (lib)
12 mkIf
13 mkEnableOption
14 mkOption
15 getExe
16 types
17 optionals
18 concatMap
19 ;
20in
21{
22 options.services.docuum = {
23 enable = mkEnableOption "docuum daemon";
24
25 threshold = mkOption {
26 description = "Threshold for deletion in bytes, like `10 GB`, `10 GiB`, `10GB` or percentage-based thresholds like `50%`";
27 type = types.str;
28 default = "10 GB";
29 example = "50%";
30 };
31
32 minAge = mkOption {
33 description = "Sets the minimum age of images to be considered for deletion.";
34 type = types.nullOr types.str;
35 default = null;
36 example = "1d";
37 };
38
39 keep = mkOption {
40 description = "Prevents deletion of images for which repository:tag matches the specified regex.";
41 type = types.listOf types.str;
42 default = [ ];
43 example = [ "^my-image" ];
44 };
45
46 deletionChunkSize = mkOption {
47 description = "Removes specified quantity of images at a time.";
48 type = types.int;
49 default = 1;
50 example = 10;
51 };
52 };
53
54 config = mkIf cfg.enable {
55 assertions = [
56 {
57 assertion = config.virtualisation.docker.enable;
58 message = "docuum requires docker on the host";
59 }
60 ];
61
62 systemd.services.docuum = {
63 after = [ "docker.socket" ];
64 requires = [ "docker.socket" ];
65 wantedBy = [ "multi-user.target" ];
66 path = [ config.virtualisation.docker.package ];
67 environment.HOME = "/var/lib/docuum";
68
69 serviceConfig = {
70 DynamicUser = true;
71 StateDirectory = "docuum";
72 SupplementaryGroups = [ "docker" ];
73 ExecStart = utils.escapeSystemdExecArgs (
74 [
75 (getExe pkgs.docuum)
76 "--threshold"
77 cfg.threshold
78 "--deletion-chunk-size"
79 cfg.deletionChunkSize
80 ]
81 ++ (concatMap (keep: [
82 "--keep"
83 keep
84 ]) cfg.keep)
85 ++ (optionals (cfg.minAge != null) [
86 "--min-age"
87 cfg.minAge
88 ])
89 );
90 };
91 };
92 };
93}