service/gitea: add monitoring & dashboard

modules/services/gitea/default.nix

@@ -1,5 +1,5 @@
 # self-hosted git service
-{ config, lib, ... }:
+{ config, lib, pkgs, ... }:
 let
   cfg = config.my.services.gitea;
   domain = config.networking.domain;
@@ -25,6 +25,7 @@ in
         service.DISABLE_REGISTRATION = true;
         ui.DEFAULT_THEME = "arc-green";
         log.LEVEL = "Warn";
+        metrics.ENABLED = config.services.prometheus.enable;
       };
       lfs.enable = true;
     };
@@ -44,6 +45,31 @@ in
       ];
     };
 
+    services.prometheus = {
+      scrapeConfigs = [
+        {
+          job_name = "gitea";
+          static_configs = [
+            {
+              targets = [ "127.0.0.1:${toString cfg.port}" ];
+              labels = {
+                instance = config.networking.hostName;
+              };
+            }
+          ];
+        }
+      ];
+    };
+    services.grafana.provision = {
+      dashboards.settings.providers = [
+        {
+          name = "Gitea";
+          options.path = pkgs.grafana-dashboards.gitea;
+          disableDeletion = true;
+        }
+      ];
+    };
+
     webapps.apps.gitea = {
       dashboard = {
         name = "Code";

pkgs/grafana-dashboards/default.nix

@@ -54,4 +54,13 @@ in
     version = "5";
     hash = "sha256-9vfUGpypFNKm9T1F12Cqh8TIl0x3jSwv2fL9HVRLt3o=";
   };
+
+  gitea = (buildGrafanaDashboard {
+    id = 13192;
+    pname = "gitea";
+    version = "1";
+    hash = "sha256-IAaI/HvMxcWE3PGQFK8avNjgj88DgcDvkWRcDAWSejM=";
+  }).overrideAttrs (self: super: {
+    src = ./gitea.json; # sadly not yet updated to latest grafana
+  });
 })