From fdcbbeaf7809a65f2f4cc4305f1e9f1971fb22b2 Mon Sep 17 00:00:00 2001
From: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>
Date: Mon, 2 Sep 2024 17:34:34 +0200
Subject: [PATCH] add @Nullable

---
 .../internal/DefaultHttpServerInstrumenterBuilder.java       | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/builder/internal/DefaultHttpServerInstrumenterBuilder.java b/instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/builder/internal/DefaultHttpServerInstrumenterBuilder.java
index 293be6ec860f..0085f8c09a13 100644
--- a/instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/builder/internal/DefaultHttpServerInstrumenterBuilder.java
+++ b/instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/builder/internal/DefaultHttpServerInstrumenterBuilder.java
@@ -32,6 +32,7 @@
 import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.Supplier;
+import javax.annotation.Nullable;
 
 /**
  * This class is internal and is hence not for public use. Its APIs are unstable and can change at
@@ -52,7 +53,7 @@ public final class DefaultHttpServerInstrumenterBuilder<REQUEST, RESPONSE> {
       httpAttributesExtractorBuilder;
   private final HttpSpanNameExtractorBuilder<REQUEST> httpSpanNameExtractorBuilder;
 
-  private final TextMapGetter<REQUEST> headerGetter;
+  @Nullable private final TextMapGetter<REQUEST> headerGetter;
   private Function<SpanNameExtractor<? super REQUEST>, ? extends SpanNameExtractor<? super REQUEST>>
       spanNameExtractorTransformer = Function.identity();
   private final HttpServerRouteBuilder<REQUEST> httpServerRouteBuilder;
@@ -64,7 +65,7 @@ public DefaultHttpServerInstrumenterBuilder(
       String instrumentationName,
       OpenTelemetry openTelemetry,
       HttpServerAttributesGetter<REQUEST, RESPONSE> attributesGetter,
-      TextMapGetter<REQUEST> headerGetter) {
+      @Nullable TextMapGetter<REQUEST> headerGetter) {
     this.instrumentationName = instrumentationName;
     this.openTelemetry = openTelemetry;
     httpAttributesExtractorBuilder = HttpServerAttributesExtractor.builder(attributesGetter);