path: root/modules/private/databases/redis.nix

{ lib, config, ... }:
let
    cfg = config.myServices.databases.redis;
in {
  options.myServices.databases.redis = {
    enable = lib.mkOption {
      default = false;
      example = true;
      description = "Whether to enable redis database";
      type = lib.types.bool;
    };
    socketsDir = lib.mkOption {
      type = lib.types.path;
      default = "/run/redis";
      description = ''
        The directory where Redis puts sockets.
        '';
    };
    # Output variables
    systemdRuntimeDirectory = lib.mkOption {
      type = lib.types.str;
      # Use ReadWritePaths= instead if socketsDir is outside of /run
      default = assert lib.strings.hasPrefix "/run/" cfg.socketsDir;
        lib.strings.removePrefix "/run/" cfg.socketsDir;
      description = ''
      Adjusted redis sockets directory for systemd
      '';
      readOnly = true;
    };
    sockets = lib.mkOption {
      type = lib.types.attrsOf lib.types.path;
      default = {
        redis  = "${cfg.socketsDir}/redis.sock";
      };
      readOnly = true;
      description = ''
        Redis sockets
        '';
    };
  };

  config = lib.mkIf cfg.enable {
    users.users.redis.uid = config.ids.uids.redis;
    users.groups.redis.gid = config.ids.gids.redis;
    services.redis = rec {
      enable = true;
      bind = "127.0.0.1";
      unixSocket = cfg.sockets.redis;
      extraConfig = ''
        unixsocketperm 777
        maxclients 1024
        '';
    };
    systemd.services.redis.serviceConfig.RuntimeDirectory = cfg.systemdRuntimeDirectory;
  };
}