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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.babeld;
conditionalBoolToString = value: if (isBool value) then (boolToString value) else (toString value);
paramsString = params:
concatMapStringsSep " " (name: "${name} ${conditionalBoolToString (getAttr name params)}")
(attrNames params);
interfaceConfig = name:
let
interface = getAttr name cfg.interfaces;
in
"interface ${name} ${paramsString interface}\n";
configFile = with cfg; pkgs.writeText "babeld.conf" (
(optionalString (cfg.interfaceDefaults != null) ''
default ${paramsString cfg.interfaceDefaults}
'')
+ (concatMapStrings interfaceConfig (attrNames cfg.interfaces))
+ extraConfig);
in
{
###### interface
options = {
services.babeld = {
enable = mkOption {
default = false;
description = ''
Whether to run the babeld network routing daemon.
'';
};
interfaceDefaults = mkOption {
default = null;
description = ''
A set describing default parameters for babeld interfaces.
See <citerefentry><refentrytitle>babeld</refentrytitle><manvolnum>8</manvolnum></citerefentry> for options.
'';
type = types.nullOr (types.attrsOf types.unspecified);
example =
{
type = "tunnel";
"split-horizon" = true;
};
};
interfaces = mkOption {
default = {};
description = ''
A set describing babeld interfaces.
See <citerefentry><refentrytitle>babeld</refentrytitle><manvolnum>8</manvolnum></citerefentry> for options.
'';
type = types.attrsOf (types.attrsOf types.unspecified);
example =
{ enp0s2 =
{ type = "wired";
"hello-interval" = 5;
"split-horizon" = "auto";
};
};
};
extraConfig = mkOption {
default = "";
description = ''
Options that will be copied to babeld.conf.
See <citerefentry><refentrytitle>babeld</refentrytitle><manvolnum>8</manvolnum></citerefentry> for details.
'';
};
};
};
###### implementation
config = mkIf config.services.babeld.enable {
systemd.services.babeld = {
description = "Babel routing daemon";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig.ExecStart = "${pkgs.babeld}/bin/babeld -c ${configFile}";
};
};
}
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