From 40f726ddf877ec5ef6f602964ac5d98ab403c8ec Mon Sep 17 00:00:00 2001
From: Steve Wolfe <stevenwolfe@gmail.com>
Date: Tue, 19 May 2026 00:08:31 -0400
Subject: [PATCH] sysutils/node_exporter: add textfile collector directory
 support

Expose --collector.textfile.directory via a new optional UI field so
users can drop .prom files into a local directory and have them scraped
alongside the built-in collectors. Useful for custom metrics (SSH
sessions, SMART data, gateway status, etc.) without patching the binary.

Bumps model version 0.2.0 -> 0.3.0.
---
 .../app/controllers/OPNsense/NodeExporter/forms/general.xml | 6 ++++++
 .../mvc/app/models/OPNsense/NodeExporter/General.xml        | 3 ++-
 .../service/templates/OPNsense/NodeExporter/node_exporter   | 6 +++++-
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/sysutils/node_exporter/src/opnsense/mvc/app/controllers/OPNsense/NodeExporter/forms/general.xml b/sysutils/node_exporter/src/opnsense/mvc/app/controllers/OPNsense/NodeExporter/forms/general.xml
index 8269302b1..cb5ab61d5 100644
--- a/sysutils/node_exporter/src/opnsense/mvc/app/controllers/OPNsense/NodeExporter/forms/general.xml
+++ b/sysutils/node_exporter/src/opnsense/mvc/app/controllers/OPNsense/NodeExporter/forms/general.xml
@@ -83,4 +83,10 @@
     <type>checkbox</type>
     <help>Enable the ZFS collector.</help>
   </field>
+  <field>
+    <id>general.textfile_directory</id>
+    <label>Textfile Directory</label>
+    <type>text</type>
+    <help>Path to a directory read by the textfile collector. Files ending in .prom in this directory will be exposed as metrics. Leave empty to disable. Example: /var/db/node_exporter</help>
+  </field>
 </form>
diff --git a/sysutils/node_exporter/src/opnsense/mvc/app/models/OPNsense/NodeExporter/General.xml b/sysutils/node_exporter/src/opnsense/mvc/app/models/OPNsense/NodeExporter/General.xml
index 07eb28595..144f669ab 100644
--- a/sysutils/node_exporter/src/opnsense/mvc/app/models/OPNsense/NodeExporter/General.xml
+++ b/sysutils/node_exporter/src/opnsense/mvc/app/models/OPNsense/NodeExporter/General.xml
@@ -1,7 +1,7 @@
 <model>
     <mount>//OPNsense/NodeExporter</mount>
     <description>node_exporter configuration</description>
-    <version>0.2.0</version>
+    <version>0.3.0</version>
     <items>
         <enabled type="BooleanField">
             <Default>0</Default>
@@ -29,5 +29,6 @@
         <interrupts type="BooleanField"/>
         <ntp type="BooleanField"/>
         <zfs type="BooleanField"/>
+        <textfile_directory type="TextField"/>
     </items>
 </model>
diff --git a/sysutils/node_exporter/src/opnsense/service/templates/OPNsense/NodeExporter/node_exporter b/sysutils/node_exporter/src/opnsense/service/templates/OPNsense/NodeExporter/node_exporter
index e7ea96fbc..e65ce07ce 100644
--- a/sysutils/node_exporter/src/opnsense/service/templates/OPNsense/NodeExporter/node_exporter
+++ b/sysutils/node_exporter/src/opnsense/service/templates/OPNsense/NodeExporter/node_exporter
@@ -46,13 +46,17 @@
     {%- set zfs = no_collector + "zfs " -%}
 {%- endif -%}
 
+{%- if not helpers.empty('OPNsense.NodeExporter.textfile_directory') -%}
+    {%- set textfile_directory = "--collector.textfile.directory=" + OPNsense.NodeExporter.textfile_directory + " " -%}
+{%- endif -%}
+
 {%- if ':' in OPNsense.NodeExporter.listenaddress -%}
   {%- set listenaddress = '[' + OPNsense.NodeExporter.listenaddress + ']' -%}
 {%- else -%}
   {%- set listenaddress = OPNsense.NodeExporter.listenaddress -%}
 {%- endif -%}
 
-node_exporter_args="{{ cpu }}{{ exec }}{{ filesystem }}{{ loadavg }}{{ meminfo }}{{ netdev }}{{ ntp }}{{ time }}{{ devstat }}{{ zfs }}"
+node_exporter_args="{{ cpu }}{{ exec }}{{ filesystem }}{{ loadavg }}{{ meminfo }}{{ netdev }}{{ ntp }}{{ time }}{{ devstat }}{{ zfs }}{{ textfile_directory }}"
 node_exporter_listen_address="{{ listenaddress }}:{{ OPNsense.NodeExporter.listenport }}"
 node_exporter_enable="YES"