nixpkgs/nixos/modules/services/misc/moonraker.nix

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2021-07-21 04:21:03 +02:00
{ config, lib, pkgs, ... }:
with lib;
let
pkg = pkgs.moonraker;
cfg = config.services.moonraker;
format = pkgs.formats.ini {
# https://github.com/NixOS/nixpkgs/pull/121613#issuecomment-885241996
listToValue = l:
if builtins.length l == 1 then generators.mkValueStringDefault {} (head l)
else lib.concatMapStrings (s: "\n ${generators.mkValueStringDefault {} s}") l;
mkKeyValue = generators.mkKeyValueDefault {} ":";
};
in {
options = {
services.moonraker = {
enable = mkEnableOption "Moonraker, an API web server for Klipper";
klipperSocket = mkOption {
type = types.path;
default = config.services.klipper.apiSocket;
description = "Path to Klipper's API socket.";
};
stateDir = mkOption {
type = types.path;
default = "/var/lib/moonraker";
description = "The directory containing the Moonraker databases.";
};
configDir = mkOption {
type = types.path;
default = cfg.stateDir + "/config";
description = ''
The directory containing client-writable configuration files.
Clients will be able to edit files in this directory via the API. This directory must be writable.
'';
};
user = mkOption {
type = types.str;
default = "moonraker";
description = "User account under which Moonraker runs.";
};
group = mkOption {
type = types.str;
default = "moonraker";
description = "Group account under which Moonraker runs.";
};
address = mkOption {
type = types.str;
default = "127.0.0.1";
example = "0.0.0.0";
description = "The IP or host to listen on.";
};
port = mkOption {
type = types.ints.unsigned;
default = 7125;
description = "The port to listen on.";
};
settings = mkOption {
type = format.type;
default = { };
example = {
authorization = {
trusted_clients = [ "10.0.0.0/24" ];
cors_domains = [ "https://app.fluidd.xyz" ];
};
};
description = ''
Configuration for Moonraker. See the <link xlink:href="https://moonraker.readthedocs.io/en/latest/configuration/">documentation</link>
for supported values.
'';
};
};
};
config = mkIf cfg.enable {
warnings = optional (cfg.settings ? update_manager)
''Enabling update_manager is not supported on NixOS and will lead to non-removable warnings in some clients.'';
users.users = optionalAttrs (cfg.user == "moonraker") {
moonraker = {
group = cfg.group;
uid = config.ids.uids.moonraker;
};
};
users.groups = optionalAttrs (cfg.group == "moonraker") {
moonraker.gid = config.ids.gids.moonraker;
};
environment.etc."moonraker.cfg".source = let
forcedConfig = {
server = {
host = cfg.address;
port = cfg.port;
klippy_uds_address = cfg.klipperSocket;
config_path = cfg.configDir;
database_path = "${cfg.stateDir}/database";
};
};
fullConfig = recursiveUpdate cfg.settings forcedConfig;
in format.generate "moonraker.cfg" fullConfig;
systemd.tmpfiles.rules = [
"d '${cfg.stateDir}' - ${cfg.user} ${cfg.group} - -"
"d '${cfg.configDir}' - ${cfg.user} ${cfg.group} - -"
];
systemd.services.moonraker = {
description = "Moonraker, an API web server for Klipper";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ]
++ optional config.services.klipper.enable "klipper.service";
# Moonraker really wants its own config to be writable...
script = ''
cp /etc/moonraker.cfg ${cfg.configDir}/moonraker-temp.cfg
chmod u+w ${cfg.configDir}/moonraker-temp.cfg
exec ${pkg}/bin/moonraker -c ${cfg.configDir}/moonraker-temp.cfg
'';
serviceConfig = {
WorkingDirectory = cfg.stateDir;
Group = cfg.group;
User = cfg.user;
};
};
};
}