2 files changed, 111 insertions, 0 deletions
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index 16a74e7c1..c06f3754e 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -31,6 +31,7 @@ let
       ./setuid.nix
       ./tinc_graphs.nix
       ./urlwatch.nix
+      ./repo-sync.nix
     ];
     options.krebs = api;
     config = lib.mkIf cfg.enable imp;
diff --git a/krebs/3modules/repo-sync.nix b/krebs/3modules/repo-sync.nix
new file mode 100644
index 000000000..c92d458dd
--- /dev/null
+++ b/krebs/3modules/repo-sync.nix
@@ -0,0 +1,110 @@
+{ 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