From 0d5fd19677b52422531dcf697a6c71e1c26f3e3c Mon Sep 17 00:00:00 2001
From: Tim Wojtulewicz <tim@corelight.com>
Date: Wed, 13 Dec 2023 15:05:34 -0700
Subject: [PATCH] Add environment variable to disable Prometheus
 populate_target_info option

---
 exporters/prometheus/src/exporter_options.cc | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/exporters/prometheus/src/exporter_options.cc b/exporters/prometheus/src/exporter_options.cc
index fe07ad1bc5..5d6b17318a 100644
--- a/exporters/prometheus/src/exporter_options.cc
+++ b/exporters/prometheus/src/exporter_options.cc
@@ -36,8 +36,21 @@ inline bool GetPrometheusPopulateOtelScope()
   return exists ? setting : true;
 }
 
+inline bool GetPrometheusPopulateTargetInfo()
+{
+  constexpr char kPrometheusPopulateTargetInfo[] = "PROMETHEUS_EXPORTER_POPULATE_TARGET_INFO";
+
+  bool setting;
+  auto exists = opentelemetry::sdk::common::GetBoolEnvironmentVariable(
+      kPrometheusPopulateTargetInfo, setting);
+
+  return exists ? setting : true;
+}
+
 PrometheusExporterOptions::PrometheusExporterOptions()
-    : url(GetPrometheusDefaultHttpEndpoint()), populate_otel_scope(GetPrometheusPopulateOtelScope())
+    : url(GetPrometheusDefaultHttpEndpoint()),
+      populate_target_info(GetPrometheusPopulateTargetInfo()),
+      populate_otel_scope(GetPrometheusPopulateOtelScope())
 {}
 
 }  // namespace metrics