diff options
Diffstat (limited to 'nixos/modules/services/networking/go-neb.nix')
-rw-r--r-- | nixos/modules/services/networking/go-neb.nix | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/nixos/modules/services/networking/go-neb.nix b/nixos/modules/services/networking/go-neb.nix new file mode 100644 index 00000000000..765834fad83 --- /dev/null +++ b/nixos/modules/services/networking/go-neb.nix @@ -0,0 +1,79 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.services.go-neb; + + settingsFormat = pkgs.formats.yaml {}; + configFile = settingsFormat.generate "config.yaml" cfg.config; +in { + options.services.go-neb = { + enable = mkEnableOption "Extensible matrix bot written in Go"; + + bindAddress = mkOption { + type = types.str; + description = "Port (and optionally address) to listen on."; + default = ":4050"; + }; + + secretFile = mkOption { + type = types.nullOr types.path; + default = null; + example = "/run/keys/go-neb.env"; + description = '' + Environment variables from this file will be interpolated into the + final config file using envsubst with this syntax: <literal>$ENVIRONMENT</literal> + or <literal>''${VARIABLE}</literal>. + The file should contain lines formatted as <literal>SECRET_VAR=SECRET_VALUE</literal>. + This is useful to avoid putting secrets into the nix store. + ''; + }; + + baseUrl = mkOption { + type = types.str; + description = "Public-facing endpoint that can receive webhooks."; + }; + + config = mkOption { + inherit (settingsFormat) type; + description = '' + Your <filename>config.yaml</filename> as a Nix attribute set. + See <link xlink:href="https://github.com/matrix-org/go-neb/blob/master/config.sample.yaml">config.sample.yaml</link> + for possible options. + ''; + }; + }; + + config = mkIf cfg.enable { + systemd.services.go-neb = let + finalConfigFile = if cfg.secretFile == null then configFile else "/var/run/go-neb/config.yaml"; + in { + description = "Extensible matrix bot written in Go"; + after = [ "network.target" ]; + wantedBy = [ "multi-user.target" ]; + environment = { + BASE_URL = cfg.baseUrl; + BIND_ADDRESS = cfg.bindAddress; + CONFIG_FILE = finalConfigFile; + }; + + serviceConfig = { + ExecStartPre = lib.optional (cfg.secretFile != null) + (pkgs.writeShellScript "pre-start" '' + umask 077 + export $(xargs < ${cfg.secretFile}) + ${pkgs.envsubst}/bin/envsubst -i "${configFile}" > ${finalConfigFile} + chown go-neb ${finalConfigFile} + ''); + PermissionsStartOnly = true; + RuntimeDirectory = "go-neb"; + ExecStart = "${pkgs.go-neb}/bin/go-neb"; + User = "go-neb"; + DynamicUser = true; + }; + }; + }; + + meta.maintainers = with maintainers; [ hexa maralorn ]; +} |