feat(gs/mugwump): Run xanthous server r/3021

Add a nixos module for running the xanthous server in a docker
container, and install it on mugwump including a prometheus scrape
config.

Change-Id: Ifeb315845b7eef2ee33af98fa3f71acdd3d9fe6b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3812
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI

2 files changed, 41 insertions, 2 deletions

diff --git a/users/grfn/xanthous/server/docker.nix b/users/grfn/xanthous/server/docker.nix
index e6054a66d28a..a62943c2b077 100644
--- a/users/grfn/xanthous/server/docker.nix
+++ b/users/grfn/xanthous/server/docker.nix
@@ -6,7 +6,6 @@
 let
   inherit (depot.users.grfn) xanthous;
   xanthous-server = xanthous.server;
-
 in pkgs.dockerTools.buildLayeredImage {
   name = "xanthous-server";
   tag = "latest";
@@ -17,5 +16,4 @@ in pkgs.dockerTools.buildLayeredImage {
       "--xanthous-binary-path" "${xanthous}/bin/xanthous"
     ];
   };
-  ci = false;
 }
diff --git a/users/grfn/xanthous/server/module.nix b/users/grfn/xanthous/server/module.nix
new file mode 100644
index 000000000000..11adda955d2c
--- /dev/null
+++ b/users/grfn/xanthous/server/module.nix
@@ -0,0 +1,41 @@
+{ config, lib, pkgs, depot, ... }:
+
+let
+  cfg = config.services.xanthous-server;
+in {
+  options = with lib; {
+    services.xanthous-server = {
+      enable = mkEnableOption "xanthous server";
+
+      port = mkOption {
+        type = types.int;
+        default = 2222;
+        description = "Port to listen to for SSH connections";
+      };
+
+      metricsPort = mkOption {
+        type = types.int;
+        default = 9000;
+        description = "Port to listen to for prometheus metrics";
+      };
+
+      image = mkOption {
+        type = types.package;
+        default = depot.users.grfn.xanthous.server.docker;
+        description = "OCI image file to run";
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    virtualisation.oci-containers.containers."xanthous-server" = {
+      autoStart = true;
+      image = "${cfg.image.imageName}:${cfg.image.imageTag}";
+      imageFile = cfg.image;
+      ports = [
+        "${toString cfg.port}:22"
+        "${toString cfg.metricsPort}:9000"
+      ];
+    };
+  };
+}