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# Module that configures CLBot, our Gerrit->IRC info bridge.
{ depot, config, lib, pkgs, ... }:
let
inherit (builtins) attrValues concatStringsSep mapAttrs readFile;
inherit (pkgs) runCommandNoCC;
inherit (lib)
listToAttrs
mkEnableOption
mkIf
mkOption
removeSuffix
types;
description = "Bot to forward CL notifications";
cfg = config.services.depot.clbot;
mkFlags = flags:
concatStringsSep " "
(attrValues (mapAttrs (key: value: "-${key} \"${toString value}\"") flags));
# Escapes a unit name for use in systemd
systemdEscape = name: removeSuffix "\n" (readFile (runCommandNoCC "unit-name" {} ''
${pkgs.systemd}/bin/systemd-escape '${name}' >> $out
''));
mkUnit = flags: channel: {
name = "clbot-${systemdEscape channel}";
value = {
description = "${description} to ${channel}";
wantedBy = [ "multi-user.target" ];
script = "${depot.fun.clbot}/bin/clbot ${mkFlags (cfg.flags // {
irc_channel = channel;
})} -alsologtostderr";
serviceConfig = {
User = "clbot";
EnvironmentFile = "/etc/secrets/clbot";
Restart = "always";
};
};
};
in {
options.services.depot.clbot = {
enable = mkEnableOption description;
flags = mkOption {
type = types.attrsOf types.str;
description = "Key value pairs for command line flags";
};
channels = mkOption {
type = with types; listOf str;
description = "Channels in which to post (generates one unit per channel)";
};
};
config = mkIf cfg.enable {
# This does not use DynamicUser because we need to make some files
# (notably the SSH private key) readable by this user outside of
# the module.
users = {
groups.clbot = {};
users.clbot = {
group = "clbot";
isSystemUser = true;
};
};
systemd.services = listToAttrs (map (mkUnit cfg.flags) cfg.channels);
};
}
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