modules/private/databases/redis.nix

   1 { lib, config, ... }:
   2 let
   3     cfg = config.myServices.databases.redis;
   4 in {
   5   options.myServices.databases.redis = {
   6     enable = lib.mkOption {
   7       default = false;
   8       example = true;
   9       description = "Whether to enable redis database";
  10       type = lib.types.bool;
  11     };
  12     socketsDir = lib.mkOption {
  13       type = lib.types.path;
  14       default = "/run/redis";
  15       description = ''
  16         The directory where Redis puts sockets.
  17         '';
  18     };
  19     # Output variables
  20     systemdRuntimeDirectory = lib.mkOption {
  21       type = lib.types.str;
  22       # Use ReadWritePaths= instead if socketsDir is outside of /run
  23       default = assert lib.strings.hasPrefix "/run/" cfg.socketsDir;
  24         lib.strings.removePrefix "/run/" cfg.socketsDir;
  25       description = ''
  26       Adjusted redis sockets directory for systemd
  27       '';
  28       readOnly = true;
  29     };
  30     sockets = lib.mkOption {
  31       type = lib.types.attrsOf lib.types.path;
  32       default = {
  33         redis  = "${cfg.socketsDir}/redis.sock";
  34       };
  35       readOnly = true;
  36       description = ''
  37         Redis sockets
  38         '';
  39     };
  40   };
  41
  42   config = lib.mkIf cfg.enable {
  43     users.users.redis.uid = config.ids.uids.redis;
  44     users.groups.redis.gid = config.ids.gids.redis;
  45     services.redis = rec {
  46       enable = true;
  47       bind = "127.0.0.1";
  48       unixSocket = cfg.sockets.redis;
  49       extraConfig = ''
  50         unixsocketperm 777
  51         maxclients 1024
  52         '';
  53     };
  54     systemd.services.redis.serviceConfig.RuntimeDirectory = cfg.systemdRuntimeDirectory;
  55   };
  56 }
  57