stockholm/krebs/3modules/github-hosts-sync.nix

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{ config, lib, pkgs, ... }:
with builtins;
with import ../4lib { inherit lib; };
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let
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cfg = config.krebs.github-hosts-sync;
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out = {
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options.krebs.github-hosts-sync = api;
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config = mkIf cfg.enable imp;
};
api = {
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enable = mkEnableOption "krebs.github-hosts-sync";
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port = mkOption {
type = types.int; # TODO port type
default = 1028;
};
dataDir = mkOption {
type = types.str; # TODO path (but not just into store)
default = "/var/lib/github-hosts-sync";
};
ssh-identity-file = mkOption {
type = types.suffixed-str [".ssh.id_ed25519" ".ssh.id_rsa"];
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default = toString <secrets/github-hosts-sync.ssh.id_rsa>;
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};
};
imp = {
systemd.services.github-hosts-sync = {
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
environment = {
port = toString cfg.port;
};
serviceConfig = {
PermissionsStartOnly = "true";
SyslogIdentifier = "github-hosts-sync";
User = user.name;
Restart = "always";
ExecStartPre = pkgs.writeScript "github-hosts-sync-init" ''
#! /bin/sh
set -euf
install -m 0711 -o ${user.name} -d ${cfg.dataDir}
install -m 0700 -o ${user.name} -d ${cfg.dataDir}/.ssh
install -m 0400 -o ${user.name} \
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${cfg.ssh-identity-file} \
${cfg.dataDir}/.ssh/${fileExtension cfg.ssh-identity-file}
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'';
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ExecStart = "${pkgs.github-hosts-sync}/bin/github-hosts-sync";
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};
};
users.extraUsers = singleton {
inherit (user) name uid;
home = cfg.dataDir;
};
};
user = {
name = "github-hosts-sync";
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uid = 3220554646; # genid github-hosts-sync
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};
# TODO move to lib?
fileExtension = s: last (splitString "." s);
in out