2e751c0772
the conversion procedure is simple: - find all things that look like options, ie calls to either `mkOption` or `lib.mkOption` that take an attrset. remember the attrset as the option - for all options, find a `description` attribute who's value is not a call to `mdDoc` or `lib.mdDoc` - textually convert the entire value of the attribute to MD with a few simple regexes (the set from mdize-module.sh) - if the change produced a change in the manual output, discard - if the change kept the manual unchanged, add some text to the description to make sure we've actually found an option. if the manual changes this time, keep the converted description this procedure converts 80% of nixos options to markdown. around 2000 options remain to be inspected, but most of those fail the "does not change the manual output check": currently the MD conversion process does not faithfully convert docbook tags like <code> and <package>, so any option using such tags will not be converted at all.
150 lines
3.7 KiB
Nix
150 lines
3.7 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.statsd;
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isBuiltinBackend = name:
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builtins.elem name [ "graphite" "console" "repeater" ];
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backendsToPackages = let
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mkMap = list: name:
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if isBuiltinBackend name then list
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else list ++ [ pkgs.nodePackages.${name} ];
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in foldl mkMap [];
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configFile = pkgs.writeText "statsd.conf" ''
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{
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address: "${cfg.listenAddress}",
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port: "${toString cfg.port}",
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mgmt_address: "${cfg.mgmt_address}",
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mgmt_port: "${toString cfg.mgmt_port}",
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backends: [${
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concatMapStringsSep "," (name:
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if (isBuiltinBackend name)
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then ''"./backends/${name}"''
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else ''"${name}"''
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) cfg.backends}],
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${optionalString (cfg.graphiteHost!=null) ''graphiteHost: "${cfg.graphiteHost}",''}
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${optionalString (cfg.graphitePort!=null) ''graphitePort: "${toString cfg.graphitePort}",''}
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console: {
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prettyprint: false
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},
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log: {
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backend: "stdout"
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},
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automaticConfigReload: false${optionalString (cfg.extraConfig != null) ","}
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${cfg.extraConfig}
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}
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'';
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deps = pkgs.buildEnv {
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name = "statsd-runtime-deps";
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pathsToLink = [ "/lib" ];
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ignoreCollisions = true;
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paths = backendsToPackages cfg.backends;
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};
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in
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{
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###### interface
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options.services.statsd = {
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enable = mkEnableOption "statsd";
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listenAddress = mkOption {
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description = lib.mdDoc "Address that statsd listens on over UDP";
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default = "127.0.0.1";
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type = types.str;
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};
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port = mkOption {
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description = lib.mdDoc "Port that stats listens for messages on over UDP";
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default = 8125;
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type = types.int;
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};
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mgmt_address = mkOption {
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description = lib.mdDoc "Address to run management TCP interface on";
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default = "127.0.0.1";
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type = types.str;
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};
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mgmt_port = mkOption {
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description = lib.mdDoc "Port to run the management TCP interface on";
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default = 8126;
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type = types.int;
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};
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backends = mkOption {
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description = lib.mdDoc "List of backends statsd will use for data persistence";
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default = [];
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example = [
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"graphite"
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"console"
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"repeater"
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"statsd-librato-backend"
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"stackdriver-statsd-backend"
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"statsd-influxdb-backend"
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];
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type = types.listOf types.str;
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};
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graphiteHost = mkOption {
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description = lib.mdDoc "Hostname or IP of Graphite server";
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default = null;
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type = types.nullOr types.str;
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};
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graphitePort = mkOption {
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description = lib.mdDoc "Port of Graphite server (i.e. carbon-cache).";
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default = null;
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type = types.nullOr types.int;
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};
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extraConfig = mkOption {
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description = lib.mdDoc "Extra configuration options for statsd";
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default = "";
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type = types.nullOr types.str;
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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assertions = map (backend: {
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assertion = !isBuiltinBackend backend -> hasAttrByPath [ backend ] pkgs.nodePackages;
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message = "Only builtin backends (graphite, console, repeater) or backends enumerated in `pkgs.nodePackages` are allowed!";
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}) cfg.backends;
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users.users.statsd = {
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uid = config.ids.uids.statsd;
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description = "Statsd daemon user";
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};
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systemd.services.statsd = {
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description = "Statsd Server";
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wantedBy = [ "multi-user.target" ];
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environment = {
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NODE_PATH = "${deps}/lib/node_modules";
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};
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serviceConfig = {
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ExecStart = "${pkgs.statsd}/bin/statsd ${configFile}";
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User = "statsd";
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};
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};
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environment.systemPackages = [ pkgs.statsd ];
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};
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}
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