From: Kai Moritz <kai@juplo.de>
Date: Tue, 8 Apr 2025 05:23:39 +0000 (+0200)
Subject: GRÜN: Verhalten für User-Header korrigiert
X-Git-Url: http://juplo.de/gitweb/?a=commitdiff_plain;h=f5124b7fa473366df7232ea96b1212a4da3e52db;p=demos%2Fkafka%2Ftraining

GRÜN: Verhalten für User-Header korrigiert
---

diff --git a/src/main/java/de/juplo/kafka/DeadLetterController.java b/src/main/java/de/juplo/kafka/DeadLetterController.java
index a0e0b1c..17cc7ea 100644
--- a/src/main/java/de/juplo/kafka/DeadLetterController.java
+++ b/src/main/java/de/juplo/kafka/DeadLetterController.java
@@ -2,6 +2,7 @@ package de.juplo.kafka;
 
 import de.juplo.kafka.exceptions.NonExistentPartitionException;
 import org.apache.kafka.clients.consumer.OffsetOutOfRangeException;
+import org.apache.kafka.common.header.Header;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -42,16 +43,23 @@ public class DeadLetterController
   {
     return deadLetterConsumer
       .requestRecord(partition, offset)
-      .map(record -> ResponseEntity
-        .ok()
-        .contentType(mediaType)
-        .header(
+      .map(record ->
+      {
+        ResponseEntity.BodyBuilder builder = ResponseEntity.ok().contentType(mediaType);
+
+        builder.header(
           prefixed(KEY),
-          UriUtils.encodePathSegment(new String(record.key()), StandardCharsets.UTF_8))
-        .header(
+          UriUtils.encodePathSegment(new String(record.key()), StandardCharsets.UTF_8));
+        builder.header(
           prefixed(TIMESTAMP),
-          Long.toString(record.timestamp()))
-        .body(record.value()));
+          Long.toString(record.timestamp()));
+
+        record.headers().forEach(header -> builder.header(
+          UriUtils.encodePathSegment(prefixed(header.key()), StandardCharsets.UTF_8),
+          UriUtils.encodePathSegment(new String(header.value(), StandardCharsets.UTF_8), StandardCharsets.UTF_8)));
+
+        return builder.body(record.value());
+      });
   }
 
   String prefixed(String headerName)