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-rw-r--r--krebs/3modules/github/hosts-sync.nix86
1 files changed, 86 insertions, 0 deletions
diff --git a/krebs/3modules/github/hosts-sync.nix b/krebs/3modules/github/hosts-sync.nix
new file mode 100644
index 000000000..71eed6c69
--- /dev/null
+++ b/krebs/3modules/github/hosts-sync.nix
@@ -0,0 +1,86 @@
+{ config, lib, pkgs, ... }:
+
+with import <stockholm/lib>;
+let
+ cfg = config.krebs.github-hosts-sync;
+
+ out = {
+ options.krebs.github-hosts-sync = api;
+ config = lib.mkIf cfg.enable imp;
+ };
+
+ api = {
+ enable = mkEnableOption "krebs.github-hosts-sync";
+ dataDir = mkOption {
+ type = types.str; # TODO path (but not just into store)
+ default = "/var/lib/github-hosts-sync";
+ };
+ srcDir = mkOption {
+ type = types.str;
+ default = "${config.krebs.tinc.retiolum.confDir}/hosts";
+ defaultText = "\${config.krebs.tinc.retiolum.confDir}/hosts";
+ };
+ ssh-identity-file = mkOption {
+ type = types.suffixed-str [".ssh.id_ed25519" ".ssh.id_rsa"];
+ default = toString <secrets/github-hosts-sync.ssh.id_ed25519>;
+ defaultText = "‹secrets/github-hosts-sync.ssh.id_ed25519›";
+ };
+ url = mkOption {
+ type = types.str;
+ default = "git@github.com:krebs/hosts.git";
+ };
+ workTree = mkOption {
+ type = types.absolute-pathname;
+ default = "${cfg.dataDir}/cache";
+ };
+ };
+
+ imp = {
+ systemd.services.github-hosts-sync = {
+ after = [ "network.target" ];
+ wantedBy = [ "multi-user.target" ];
+ environment = {
+ GITHUB_HOST_SYNC_USER_MAIL = user.mail;
+ GITHUB_HOST_SYNC_USER_NAME = user.name;
+ GITHUB_HOST_SYNC_SRCDIR = cfg.srcDir;
+ GITHUB_HOST_SYNC_WORKTREE = cfg.workTree;
+ GITHUB_HOST_SYNC_URL = cfg.url;
+ };
+ serviceConfig = {
+ PermissionsStartOnly = "true";
+ SyslogIdentifier = "github-hosts-sync";
+ User = user.name;
+ Type = "oneshot";
+ RemainAfterExit = true;
+ ExecStartPre = pkgs.writeDash "github-hosts-sync-init" ''
+ 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} \
+ ${cfg.ssh-identity-file} \
+ ${cfg.dataDir}/.ssh/${fileExtension cfg.ssh-identity-file}
+ '';
+ ExecStart = "${pkgs.github-hosts-sync}/bin/github-hosts-sync";
+ };
+ };
+
+ users.users.${user.name} = {
+ inherit (user) uid;
+ group = user.name;
+ home = cfg.dataDir;
+ isSystemUser = true;
+ };
+ };
+
+ users.groups.${user.name} = {};
+
+ user = rec {
+ mail = "${name}@${config.krebs.build.host.name}";
+ name = "github-hosts-sync";
+ uid = genid_uint31 name;
+ };
+
+ # TODO move to lib?
+ fileExtension = s: last (splitString "." s);
+
+in out