liminix/modules/ntp/service.nix
2023-07-22 23:50:01 +01:00

83 lines
2.4 KiB
Nix

{
liminix
, chrony
, serviceFns
, lib
, writeText
}:
let
inherit (liminix.services) longrun;
inherit (lib) concatStringsSep mapAttrsToList;
inherit (liminix.lib) typeChecked;
inherit (lib) mkOption types;
serverOpts = types.listOf types.str;
t = {
user = mkOption {
type = types.str;
default = "ntp";
};
servers = mkOption { type = types.attrsOf serverOpts; default = {}; };
pools = mkOption { type = types.attrsOf serverOpts; default = {}; };
peers = mkOption { type = types.attrsOf serverOpts; default = {}; };
makestep = mkOption {
default = null;
type = types.nullOr
(types.submodule {
options = {
threshold = mkOption { type = types.number; default = null;};
limit = mkOption { type = types.number; };
};
});
};
allow = mkOption {
description = "subnets from which NTP clients are allowed to access the server";
type = types.listOf types.str;
default = [];
};
bindaddress = mkOption {
type = types.nullOr types.str;
default = null;
};
binddevice = mkOption {
type = types.nullOr types.str;
default = null;
};
dumpdir = mkOption {
internal = true;
type = types.path;
default = "/run/chrony";
};
extraConfig = mkOption {
type = types.lines;
default = "";
};
};
configFile = p:
assert (builtins.trace p.makestep true);
(mapAttrsToList (name: opts: "server ${name} ${concatStringsSep "" opts}")
p.servers)
++
(mapAttrsToList (name: opts: "pool ${name} ${concatStringsSep "" opts}")
p.pools)
++
(mapAttrsToList (name: opts: "peer ${name} ${concatStringsSep "" opts}")
p.peers)
++ [ "user #{p.user}" ]
++ (lib.optional (p.makestep != null) "makestep ${toString p.makestep.threshold} ${toString p.makestep.limit}")
++ (map (n: "allow ${n}") p.allow)
++ (lib.optional (p.bindaddress != null) "bindaddress ${p.bindaddress}")
++ (lib.optional (p.binddevice != null) "binddevice ${p.binddevice}")
++ (lib.optional (p.dumpdir != null) "dumpdir ${p.dumpdir}")
++ [p.extraConfig];
in
params:
let
config = writeText "chrony.conf"
(concatStringsSep "\n"
(configFile (typeChecked "" t params)));
in longrun {
name = "ntp"; # bad name, needs to be unique
run = "${chrony}/bin/chronyd -f ${config} -d";
}