working with nix

clients/quadraticserver/stats/grafana.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, ... }@attrs:
 
 let
   secretName = "grafanaSecret";
@@ -20,6 +20,7 @@ in
         enable = true;
         declarativePlugins = [ ];
         settings = {
+          "auth.anonymous".enabled = true;
           analytics.feedback_links_enabled = false;
           users.default_theme = "system";
           server = {
@@ -35,6 +36,23 @@ in
             admin_user = "quadradical";
             admin_password = "$__file{${credentialDirectory}${passwordName}}";
           };
+
+          dashboards.default_home_dashboard_path = toString (
+            (import ../../../lib/status.nix attrs) [
+              {
+                name = "Continuwuity (Matrix)";
+                service = "continuwuity.service";
+              }
+              {
+                name = "Forgejo (Git)";
+                service = "forgejo.service";
+              }
+              {
+                name = "SearXNG (Search)";
+                service = "searx.service";
+              }
+            ]
+          );
         };
 
         provision = {
@@ -43,6 +61,7 @@ in
             {
               name = "Prometheus";
               type = "prometheus";
+              uid = "prometheus";
               url = with config.services.prometheus; "http://${listenAddress}:${toString port}";
               jsonData.timeInterval = config.services.prometheus.globalConfig.scrape_interval;
             }

clients/quadraticserver/stats/prometheus.nix

@@ -4,7 +4,7 @@
     enable = true;
     listenAddress = "127.0.0.7";
 
-    globalConfig.scrape_interval = "10s";
+    globalConfig.scrape_interval = "3s";
     scrapeConfigs = [
       {
         job_name = "node";

lib/status.nix

@@ -0,0 +1,59 @@
+{ pkgs, lib, ... }:
+services:
+pkgs.writers.writeJSON "status.json" {
+  title = "Service Status";
+  panels = map (
+    { name, service }:
+    {
+      datasource = {
+        type = "prometheus";
+        uid = "prometheus";
+      };
+      fieldConfig = {
+        defaults = {
+          color = {
+            mode = "thresholds";
+          };
+          mappings = [
+            {
+              options = {
+                "0" = {
+                  color = "red";
+                  index = 1;
+                  text = "Failed";
+                };
+                "1" = {
+                  color = "green";
+                  index = 0;
+                  text = "Running";
+                };
+              };
+              type = "value";
+            }
+          ];
+          thresholds = {
+            mode = "absolute";
+            steps = [
+              {
+                color = "red";
+                value = 0;
+              }
+              {
+                color = "green";
+                value = 1;
+              }
+            ];
+          };
+          unit = "none";
+        };
+      };
+      targets = [
+        {
+          expr = "node_systemd_unit_state{name=\"${service}\",state=\"active\"}";
+        }
+      ];
+      title = name;
+      type = "stat";
+    }
+  ) services;
+}