nixos/modules/services/networking/scion/scion-daemon.nix

   1 {
   2   config,
   3   lib,
   4   pkgs,
   5   ...
   6 }:
   7
   8 with lib;
   9
  10 let
  11   globalCfg = config.services.scion;
  12   cfg = config.services.scion.scion-daemon;
  13   toml = pkgs.formats.toml { };
  14   connectionDir = if globalCfg.stateless then "/run" else "/var/lib";
  15   defaultConfig = {
  16     general = {
  17       id = "sd";
  18       config_dir = "/etc/scion";
  19       reconnect_to_dispatcher = true;
  20     };
  21     path_db = {
  22       connection = "${connectionDir}/scion-daemon/sd.path.db";
  23     };
  24     trust_db = {
  25       connection = "${connectionDir}/scion-daemon/sd.trust.db";
  26     };
  27     log.console = {
  28       level = "info";
  29     };
  30   };
  31   configFile = toml.generate "scion-daemon.toml" (recursiveUpdate defaultConfig cfg.settings);
  32 in
  33 {
  34   options.services.scion.scion-daemon = {
  35     enable = mkEnableOption "the scion-daemon service";
  36     settings = mkOption {
  37       default = { };
  38       type = toml.type;
  39       example = literalExpression ''
  40         {
  41           path_db = {
  42             connection = "/run/scion-daemon/sd.path.db";
  43           };
  44           log.console = {
  45             level = "info";
  46           };
  47         }
  48       '';
  49       description = ''
  50         scion-daemon configuration. Refer to
  51         <https://docs.scion.org/en/latest/manuals/common.html>
  52         for details on supported values.
  53       '';
  54     };
  55   };
  56   config = mkIf cfg.enable {
  57     systemd.services.scion-daemon = {
  58       description = "SCION Daemon";
  59       after = [
  60         "network-online.target"
  61         "scion-dispatcher.service"
  62       ];
  63       wants = [
  64         "network-online.target"
  65         "scion-dispatcher.service"
  66       ];
  67       wantedBy = [ "multi-user.target" ];
  68       serviceConfig = {
  69         Type = "simple";
  70         ExecStart = "${globalCfg.package}/bin/scion-daemon --config ${configFile}";
  71         Restart = "on-failure";
  72         DynamicUser = true;
  73         ${if globalCfg.stateless then "RuntimeDirectory" else "StateDirectory"} = "scion-daemon";
  74       };
  75     };
  76   };
  77 }