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