depot/third_party/nixpkgs/nixos/modules/services/misc/confd.nix

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{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.services.confd;
confdConfig = ''
backend = "${cfg.backend}"
confdir = "${cfg.confDir}"
interval = ${toString cfg.interval}
nodes = [ ${concatMapStringsSep "," (s: ''"${s}"'') cfg.nodes}, ]
prefix = "${cfg.prefix}"
log-level = "${cfg.logLevel}"
watch = ${boolToString cfg.watch}
'';
in {
options.services.confd = {
enable = mkEnableOption "confd service";
backend = mkOption {
description = "Confd config storage backend to use.";
default = "etcd";
type = types.enum ["etcd" "consul" "redis" "zookeeper"];
};
interval = mkOption {
description = "Confd check interval.";
default = 10;
type = types.int;
};
nodes = mkOption {
description = "Confd list of nodes to connect to.";
default = [ "http://127.0.0.1:2379" ];
type = types.listOf types.str;
};
watch = mkOption {
description = "Confd, whether to watch etcd config for changes.";
default = true;
type = types.bool;
};
prefix = mkOption {
description = "The string to prefix to keys.";
default = "/";
type = types.path;
};
logLevel = mkOption {
description = "Confd log level.";
default = "info";
type = types.enum ["info" "debug"];
};
confDir = mkOption {
description = "The path to the confd configs.";
default = "/etc/confd";
type = types.path;
};
package = mkOption {
description = "Confd package to use.";
default = pkgs.confd;
defaultText = "pkgs.confd";
type = types.package;
};
};
config = mkIf cfg.enable {
systemd.services.confd = {
description = "Confd Service.";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
ExecStart = "${cfg.package.bin}/bin/confd";
};
};
environment.etc = {
"confd/confd.toml".text = confdConfig;
};
environment.systemPackages = [ cfg.package ];
services.etcd.enable = mkIf (cfg.backend == "etcd") (mkDefault true);
};
}