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|
{ config, pkgs, lib, utils, ... }:
let
cfg = config.services.docuum;
inherit (lib) mkIf mkEnableOption mkOption getExe types optionals concatMap;
in
{
options.services.docuum = {
enable = mkEnableOption "docuum daemon";
threshold = mkOption {
description = "Threshold for deletion in bytes, like `10 GB`, `10 GiB`, `10GB` or percentage-based thresholds like `50%`";
type = types.str;
default = "10 GB";
example = "50%";
};
minAge = mkOption {
description = "Sets the minimum age of images to be considered for deletion.";
type = types.nullOr types.str;
default = null;
example = "1d";
};
keep = mkOption {
description = "Prevents deletion of images for which repository:tag matches the specified regex.";
type = types.listOf types.str;
default = [];
example = [ "^my-image" ];
};
deletionChunkSize = mkOption {
description = "Removes specified quantity of images at a time.";
type = types.int;
default = 1;
example = 10;
};
};
config = mkIf cfg.enable {
assertions = [
{
assertion = config.virtualisation.docker.enable;
message = "docuum requires docker on the host";
}
];
systemd.services.docuum = {
after = [ "docker.socket" ];
requires = [ "docker.socket" ];
wantedBy = [ "multi-user.target" ];
path = [ config.virtualisation.docker.package ];
environment.HOME = "/var/lib/docuum";
serviceConfig = {
DynamicUser = true;
StateDirectory = "docuum";
SupplementaryGroups = [ "docker" ];
ExecStart = utils.escapeSystemdExecArgs ([
(getExe pkgs.docuum)
"--threshold" cfg.threshold
"--deletion-chunk-size" cfg.deletionChunkSize
] ++ (concatMap (keep: [ "--keep" keep ]) cfg.keep)
++ (optionals (cfg.minAge != null) [ "--min-age" cfg.minAge ])
);
};
};
};
}
|
