From 097eb8257edf3ae428ae41d7ce404c75117f293f Mon Sep 17 00:00:00 2001
From: Jeff Hutchison <jeff@jeffhutchison.com>
Date: Fri, 18 Nov 2022 11:26:10 -0500
Subject: [PATCH 1/3] maintainers: add jhh

---
 maintainers/maintainer-list.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 7a28c252764..54a1b853d40 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -6486,6 +6486,12 @@
     githubId = 6445082;
     name = "Joseph Lukasik";
   };
+  jhh = {
+    email = "jeff@j3ff.io";
+    github = "jhh";
+    githubId = 14412;
+    name = "Jeff Hutchison";
+  };
   jhhuh = {
     email = "jhhuh.note@gmail.com";
     github = "jhhuh";

From 0dc5bbbde9bd7e50c0438c9f1be8880424e0ce6a Mon Sep 17 00:00:00 2001
From: Jeff Hutchison <jeff@jeffhutchison.com>
Date: Thu, 24 Nov 2022 07:48:45 -0500
Subject: [PATCH 2/3] prometheus-nut-exporter: init at 2.4.2

---
 .../monitoring/prometheus/nut-exporter.nix    | 22 +++++++++++++++++++
 pkgs/top-level/all-packages.nix               |  1 +
 2 files changed, 23 insertions(+)
 create mode 100644 pkgs/servers/monitoring/prometheus/nut-exporter.nix

diff --git a/pkgs/servers/monitoring/prometheus/nut-exporter.nix b/pkgs/servers/monitoring/prometheus/nut-exporter.nix
new file mode 100644
index 00000000000..9877d7639bd
--- /dev/null
+++ b/pkgs/servers/monitoring/prometheus/nut-exporter.nix
@@ -0,0 +1,22 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "nut-exporter";
+  version = "2.4.2";
+
+  src = fetchFromGitHub {
+    owner = "DRuggeri";
+    repo = "nut_exporter";
+    rev = "v${version}";
+    sha256 = "sha256-fymVx6FJGII2PmWXVfeCRTxfO+35bmyn/9iL0iPuBgo=";
+  };
+
+  vendorSha256 = "sha256-ji8JlEYChPBakt5y6+zcm1l04VzZ0/fjfGFJ9p+1KHE=";
+
+  meta = with lib; {
+    description = "Prometheus exporter for Network UPS Tools";
+    homepage = "https://github.com/DRuggeri/nut_exporter";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ jhh ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 41ff5fb69f5..b28e862ae88 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -24348,6 +24348,7 @@ with pkgs;
   prometheus-node-exporter = callPackage ../servers/monitoring/prometheus/node-exporter.nix {
     inherit (darwin.apple_sdk.frameworks) CoreFoundation IOKit;
   };
+  prometheus-nut-exporter = callPackage ../servers/monitoring/prometheus/nut-exporter.nix { };
   prometheus-openldap-exporter = callPackage ../servers/monitoring/prometheus/openldap-exporter.nix {
     buildGoModule = buildGo118Module; # nixosTests.prometheus-exporter.ldap fails with 1.19
   };

From a587e528c50d11b4d4e26a7dbd0b4ec6bd511bf3 Mon Sep 17 00:00:00 2001
From: Jeff Hutchison <jeff@jeffhutchison.com>
Date: Thu, 24 Nov 2022 07:50:09 -0500
Subject: [PATCH 3/3] Add prometheus-nut-exporter module

---
 .../monitoring/prometheus/exporters.nix       |  1 +
 .../monitoring/prometheus/exporters/nut.nix   | 50 +++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 nixos/modules/services/monitoring/prometheus/exporters/nut.nix

diff --git a/nixos/modules/services/monitoring/prometheus/exporters.nix b/nixos/modules/services/monitoring/prometheus/exporters.nix
index 8826d80a70c..22b78981b2c 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters.nix
@@ -51,6 +51,7 @@ let
     "nginx"
     "nginxlog"
     "node"
+    "nut"
     "openldap"
     "openvpn"
     "pihole"
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/nut.nix b/nixos/modules/services/monitoring/prometheus/exporters/nut.nix
new file mode 100644
index 00000000000..1c86b48b450
--- /dev/null
+++ b/nixos/modules/services/monitoring/prometheus/exporters/nut.nix
@@ -0,0 +1,50 @@
+{ config, lib, pkgs, options }:
+
+with lib;
+
+let
+  cfg = config.services.prometheus.exporters.nut;
+in
+{
+  port = 9199;
+  extraOpts = {
+    nutServer = mkOption {
+      type = types.str;
+      default = "127.0.0.1";
+      description = lib.mdDoc ''
+        Hostname or address of the NUT server
+      '';
+    };
+    nutUser = mkOption {
+      type = types.str;
+      default = "";
+      example = "nut";
+      description = lib.mdDoc ''
+        The user to log in into NUT server. If set, passwordPath should
+        also be set.
+
+        Default NUT configs usually permit reading variables without
+        authentication.
+      '';
+    };
+    passwordPath = mkOption {
+      type = types.nullOr types.path;
+      default = null;
+      apply = final: if final == null then null else toString final;
+      description = lib.mdDoc ''
+        A run-time path to the nutUser password file, which should be
+        provisioned outside of Nix store.
+      '';
+    };
+  };
+  serviceOpts = {
+    script = ''
+      ${optionalString (cfg.passwordPath != null)
+      "export NUT_EXPORTER_PASSWORD=$(cat ${toString cfg.passwordPath})"}
+      ${pkgs.prometheus-nut-exporter}/bin/nut_exporter \
+        --nut.server=${cfg.nutServer} \
+        --web.listen-address="${cfg.listenAddress}:${toString cfg.port}" \
+        ${optionalString (cfg.nutUser != "") "--nut.username=${cfg.nutUser}"}
+    '';
+  };
+}