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-rw-r--r--ops/modules/depot-replica.nix45
1 files changed, 45 insertions, 0 deletions
diff --git a/ops/modules/depot-replica.nix b/ops/modules/depot-replica.nix
new file mode 100644
index 000000000000..f5f02a18a9fc
--- /dev/null
+++ b/ops/modules/depot-replica.nix
@@ -0,0 +1,45 @@
+# Configuration for receiving a depot replica from Gerrit's
+# replication plugin.
+#
+# This only prepares the user and folder for receiving the replica,
+# but Gerrit configuration still needs to be modified in addition.
+{ config, depot, lib, pkgs, ... }:
+
+let
+  cfg = config.services.depot.replica;
+in
+{
+  options.services.depot.replica = with lib; {
+    enable = mkEnableOption "Receive depot git replica from Gerrit";
+
+    key = mkOption {
+      description = "Public key to use for replication";
+      type = types.str;
+      default = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFFab9O1xaQ1TCyn+CxmXHexdlLzURREG+UR3Qdi3BvH";
+    };
+
+    path = mkOption {
+      description = "Replication destination path (will be created)";
+      type = types.str;
+      default = "/var/lib/depot";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    users.groups.depot = { };
+
+    users.users.depot = {
+      group = "depot";
+      isSystemUser = true;
+      createHome = true;
+      home = cfg.path;
+      homeMode = "750"; # group can read depot
+      openssh.authorizedKeys.keys = lib.singleton cfg.key;
+      shell = pkgs.bashInteractive; # gerrit needs to run shell commands
+    };
+
+    environment.systemPackages = [
+      pkgs.git
+    ];
+  };
+}