X-Git-Url: http://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2FRestProducer.java;h=a040bb04aecba79ce9b8d8f48c5d73d2d00d21de;hb=c4f6f4f264b70b50801f25042510917e7f6b9f7b;hp=ac9a541f8a6c143ead5a4826bef3ed48c2035ece;hpb=b7f630330543c96b4cfca19870f6aded03588e01;p=demos%2Fkafka%2Ftraining

diff --git a/src/main/java/de/juplo/kafka/RestProducer.java b/src/main/java/de/juplo/kafka/RestProducer.java
index ac9a541..a040bb0 100644
--- a/src/main/java/de/juplo/kafka/RestProducer.java
+++ b/src/main/java/de/juplo/kafka/RestProducer.java
@@ -4,10 +4,12 @@ import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.apache.kafka.common.serialization.StringSerializer;
+import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.context.request.async.DeferredResult;
 
 import javax.annotation.PreDestroy;
+import java.math.BigInteger;
 import java.util.Properties;
 import java.util.concurrent.ExecutionException;
 
@@ -47,6 +49,7 @@ public class RestProducer
   @PostMapping(path = "{key}")
   public DeferredResult<ProduceResult> send(
       @PathVariable String key,
+      @RequestHeader(name = "X-id", required = false) Long correlationId,
       @RequestBody String value)
   {
     DeferredResult<ProduceResult> result = new DeferredResult<>();
@@ -60,6 +63,12 @@ public class RestProducer
         value   // Value
     );
 
+    record.headers().add("source", id.getBytes());
+    if (correlationId != null)
+    {
+      record.headers().add("id", BigInteger.valueOf(correlationId).toByteArray());
+    }
+
     producer.send(record, (metadata, e) ->
     {
       long now = System.currentTimeMillis();
@@ -106,6 +115,13 @@ public class RestProducer
     return result;
   }
 
+  @ExceptionHandler
+  @ResponseStatus(HttpStatus.BAD_REQUEST)
+  public ErrorResponse illegalStateException(IllegalStateException e)
+  {
+    return new ErrorResponse(e.getMessage(), HttpStatus.BAD_REQUEST.value());
+  }
+
   @PreDestroy
   public void destroy() throws ExecutionException, InterruptedException
   {