refactor: make Prometheus & Loki config reusable

1 files changed, 63 insertions, 0 deletions

diff --git a/nixos/hosts/tente/grafana.nix b/nixos/hosts/tente/grafana.nix
new file mode 100644
index 0000000..e6fb7af
--- /dev/null
+++ b/nixos/hosts/tente/grafana.nix
@@ -0,0 +1,63 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.grafana;
+in
+{
+  options.grafana = {
+    port = lib.mkOption {
+      type = lib.types.int;
+    };
+    matrixForwarderPort = lib.mkOption {
+      type = lib.types.int;
+    };
+    prometheusSqlExporterPort = lib.mkOption {
+      type = lib.types.int;
+    };
+    matrixServerUrl = lib.mkOption {
+      type = lib.types.str;
+    };
+  };
+
+  imports = [
+    <top/shared/prometheus-sql-exporter/service.nix>
+    <top/shared/grafana-matrix-forwarder/service.nix>
+  ];
+
+  config = {
+    age.secrets.grafana-matrix-forwarder-env.file = <top/secrets/grafana-matrix-forwarder-env.age>;
+
+    services.grafana = {
+      enable = true;
+      settings = {
+        server = {
+          http_addr = "0.0.0.0";
+          http_port = cfg.port;
+        };
+      };
+
+      provision = {
+        enable = true;
+        datasources.settings.datasources = [
+          {
+            name = "Prometheus Tente";
+            type = "prometheus";
+            url = "http://${config.services.prometheus.listenAddress}:${toString config.services.prometheus.port}";
+          }
+          {
+            name = "Loki Tente";
+            type = "loki";
+            access = "proxy";
+            url = "http://127.0.0.1:${toString config.services.loki.configuration.server.http_listen_port}";
+          }
+        ];
+      };
+    };
+    services.grafana-matrix-forwarder = {
+      enable = true;
+      port = cfg.matrixForwarderPort;
+      homeserver = cfg.matrixServerUrl;
+      environmentFile = config.age.secrets.grafana-matrix-forwarder-env.path;
+    };
+  };
+}