grafana: more things

1. Smoothed out power draw
- UPS only reports on 9 watt intervals, so smoothing it out gives more
relative detail on trends
2. Add jellyfin integration
- Good for seeing correlations between statistics and jellyfin streams
3. intel gpu stats
- Provides info on utilization of the gpu

services/jellyfin-annotations.nix

@@ -0,0 +1,40 @@
+{
+  config,
+  pkgs,
+  service_configs,
+  lib,
+  ...
+}:
+{
+  systemd.services.jellyfin-annotations = {
+    description = "Jellyfin stream annotation service for Grafana";
+    after = [
+      "network.target"
+      "grafana.service"
+    ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      ExecStart = "${pkgs.python3}/bin/python3 ${./jellyfin-annotations.py}";
+      Restart = "always";
+      RestartSec = "10s";
+      LoadCredential = "jellyfin-api-key:${config.age.secrets.jellyfin-api-key.path}";
+      DynamicUser = true;
+      StateDirectory = "jellyfin-annotations";
+      NoNewPrivileges = true;
+      ProtectSystem = "strict";
+      ProtectHome = true;
+      PrivateTmp = true;
+      RestrictAddressFamilies = [
+        "AF_INET"
+        "AF_INET6"
+      ];
+      MemoryDenyWriteExecute = true;
+    };
+    environment = {
+      JELLYFIN_URL = "http://127.0.0.1:${toString service_configs.ports.private.jellyfin.port}";
+      GRAFANA_URL = "http://127.0.0.1:${toString service_configs.ports.private.grafana.port}";
+      STATE_FILE = "/var/lib/jellyfin-annotations/state.json";
+      POLL_INTERVAL = "30";
+    };
+  };
+}