Allow metric names with only a single character (#951)

Signed-off-by: Fabian Stäber <[email protected]>
prometheus · Apr 10, 2024 · 4a6495a · 4a6495a
1 parent fe02245
commit 4a6495a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/...s-metrics-model/src/main/java/io/prometheus/metrics/model/snapshots/PrometheusNaming.java b/...s-metrics-model/src/main/java/io/prometheus/metrics/model/snapshots/PrometheusNaming.java
@@ -13,7 +13,7 @@ public class PrometheusNaming {
     /**
      * Legal characters for metric names, including dot.
      */
-    private static final Pattern METRIC_NAME_PATTERN = Pattern.compile("^[a-zA-Z_.:][a-zA-Z0-9_.:]+$");
+    private static final Pattern METRIC_NAME_PATTERN = Pattern.compile("^[a-zA-Z_.:][a-zA-Z0-9_.:]*$");
 
     /**
      * Legal characters for label names, including dot.