stockholm/krebs/3modules/repo-sync.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.krebs.repo-sync;
out = {
options.krebs.repo-sync = api;
config = mkIf cfg.enable imp;
};
api = {
enable = mkEnableOption "repo-sync";
config = mkOption {
type = with types;attrsOf (attrsOf (attrsOf str));
example = literalExample ''
# see `repo-sync --help`
# `ref` provides sane defaults and can be omitted
# attrset will be converted to json and be used as config
{
makefu = {
origin = {
url = http://github.com/makefu/repo ;
ref = "heads/dev" ;
};
mirror = {
url = "git@internal:mirror" ;
ref = "heads/github-mirror-dev" ;
};
};
lass = {
origin = {
url = http://github.com/lass/repo ;
};
mirror = {
url = "git@internal:mirror" ;
};
};
"@latest" = {
mirror = {
url = "git@internal:mirror";
ref = "heads/master";
};
};
};
'';
};
timerConfig = mkOption {
type = types.attrsOf types.str;
default = {
OnCalendar = "*:00,15,30,45";
};
};
stateDir = mkOption {
type = types.str;
default = "/var/lib/repo-sync";
};
privateKeyFile = mkOption {
type = types.str;
description = ''
used by repo-sync to identify with ssh service
'';
default = toString <secrets/wolf-repo-sync.rsa_key.priv>;
};
};
repo-sync-config = pkgs.writeText "repo-sync-config.json"
(builtins.toJSON cfg.config);
imp = {
users.users.repo-sync = {
name = "repo-sync";
uid = genid "repo-sync";
description = "repo-sync user";
home = cfg.stateDir;
createHome = true;
};
systemd.timers.repo-sync = {
description = "repo-sync timer";
wantedBy = [ "timers.target" ];
timerConfig = cfg.timerConfig;
};
systemd.services.repo-sync = {
description = "repo-sync";
after = [ "network.target" ];
path = with pkgs; [ ];
environment = {
GIT_SSH_COMMAND = "${pkgs.openssh}/bin/ssh -i ${cfg.stateDir}/ssh.priv";
};
serviceConfig = {
Type = "simple";
PermissionsStartOnly = true;
ExecStartPre = pkgs.writeScript "prepare-repo-sync-user" ''
#! /bin/sh
cp -v ${lib.shell.escape cfg.privateKeyFile} ${cfg.stateDir}/ssh.priv
chown repo-sync ${cfg.stateDir}/ssh.priv
'';
ExecStart = "${pkgs.repo-sync}/bin/repo-sync ${repo-sync-config}";
WorkingDirectory = cfg.stateDir;
User = "repo-sync";
};
};
};
in out