From: Daniel Swarbrick <dswarbrick@debian.org>
Date: Mon, 18 Aug 2025 13:16:58 +0200
Subject: Use legacy name validation

Forwarded: not-needed
Last-Update: 2025-02-20

Due to a backwards-incompatible change in prometheus/common v0.62.0,
override the global models.NameValidationScheme variable to enforce
legacy metric names.
---
 exporters/prometheus/exporter.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/exporters/prometheus/exporter.go b/exporters/prometheus/exporter.go
index b0f5f37..8d2c41f 100644
--- a/exporters/prometheus/exporter.go
+++ b/exporters/prometheus/exporter.go
@@ -26,6 +26,10 @@ import (
 	"go.opentelemetry.io/otel/sdk/resource"
 )
 
+func init() {
+	model.NameValidationScheme = model.LegacyValidation
+}
+
 const (
 	targetInfoMetricName  = "target_info"
 	targetInfoDescription = "Target metadata"