From 4151ddba2d2d07f83bc7eb8214c9611e4fa06a3e Mon Sep 17 00:00:00 2001
From: Pieter Lexis <pieter.lexis@powerdns.com>
Date: Wed, 17 Jun 2020 14:26:25 +0200
Subject: [PATCH] rec: Add version info to prometheus statistics

---
 pdns/ws-recursor.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pdns/ws-recursor.cc b/pdns/ws-recursor.cc
index a074460c2f..7237596e1d 100644
--- a/pdns/ws-recursor.cc
+++ b/pdns/ws-recursor.cc
@@ -458,6 +458,10 @@ static void prometheusMetrics(HttpRequest *req, HttpResponse *resp) {
         output << prometheusMetricName << " " << tup.second << "\n";
     }
 
+    output << "# HELP pdns_recursor_info " << "Info from pdns_recursor, value is always 1" << "\n";
+    output << "# TYPE pdns_recursor_info " << "gauge" << "\n";
+    output << "pdns_recursor_info{version=\"" << VERSION << "\"} " << "1" << "\n";
+
     resp->body = output.str();
     resp->headers["Content-Type"] = "text/plain";
     resp->status = 200;
-- 
2.47.2