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{ config, lib, pkgs, options }:
with lib;
let
cfg = config.services.prometheus.exporters.wireguard;
in {
port = 9586;
extraOpts = {
verbose = mkEnableOption "Verbose logging mode for prometheus-wireguard-exporter";
wireguardConfig = mkOption {
type = with types; nullOr (either path str);
default = null;
description = ''
Path to the Wireguard Config to
<link xlink:href="https://github.com/MindFlavor/prometheus_wireguard_exporter/tree/2.0.0#usage">add the peer's name to the stats of a peer</link>.
Please note that <literal>networking.wg-quick</literal> is required for this feature
as <literal>networking.wireguard</literal> uses
<citerefentry><refentrytitle>wg</refentrytitle><manvolnum>8</manvolnum></citerefentry>
to set the peers up.
'';
};
singleSubnetPerField = mkOption {
type = types.bool;
default = false;
description = ''
By default, all allowed IPs and subnets are comma-separated in the
<literal>allowed_ips</literal> field. With this option enabled,
a single IP and subnet will be listed in fields like <literal>allowed_ip_0</literal>,
<literal>allowed_ip_1</literal> and so on.
'';
};
};
serviceOpts = {
script = ''
${pkgs.prometheus-wireguard-exporter}/bin/prometheus_wireguard_exporter \
-p ${toString cfg.port} \
${optionalString cfg.verbose "-v"} \
${optionalString cfg.singleSubnetPerField "-s"} \
${optionalString (cfg.wireguardConfig != null) "-n ${cfg.wireguardConfig}"}
'';
path = [ pkgs.wireguard-tools ];
serviceConfig = {
DynamicUser = true;
AmbientCapabilities = [ "CAP_NET_ADMIN" ];
};
};
}
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