Springify: Type-Mapping für den Nachrichten-Typ ergänzt

[demos/kafka/training] / src / main / java / de / juplo / kafka / RestProducer.java

diff --git a/src/main/java/de/juplo/kafka/RestProducer.java b/src/main/java/de/juplo/kafka/RestProducer.java
index 19f70ba..bccc166 100644 (file)
--- a/src/main/java/de/juplo/kafka/RestProducer.java
+++ b/src/main/java/de/juplo/kafka/RestProducer.java
@@ -4,14 +4,14 @@ 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.MediaType;
+import org.springframework.http.HttpStatus;
+import org.springframework.kafka.support.serializer.JsonSerializer;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.context.request.async.DeferredResult;
 
 import javax.annotation.PreDestroy;
 import java.util.Properties;
 import java.util.concurrent.ExecutionException;
-import java.util.concurrent.ExecutorService;
 
 
 @Slf4j
@@ -20,7 +20,7 @@ public class RestProducer
 {
   private final String id;
   private final String topic;
-  private final KafkaProducer<String, String> producer;
+  private final KafkaProducer<String, ClientMessage> producer;
 
   private long produced = 0;
 
@@ -34,10 +34,13 @@ public class RestProducer
     props.put("client.id", properties.getClientId());
     props.put("acks", properties.getAcks());
     props.put("batch.size", properties.getBatchSize());
+    props.put("delivery.timeout.ms", 20000); // 20 Sekunden
+    props.put("request.timeout.ms",  10000); // 10 Sekunden
     props.put("linger.ms", properties.getLingerMs());
     props.put("compression.type", properties.getCompressionType());
     props.put("key.serializer", StringSerializer.class.getName());
-    props.put("value.serializer", StringSerializer.class.getName());
+    props.put("value.serializer", JsonSerializer.class.getName());
+    props.put(JsonSerializer.TYPE_MAPPINGS, "message:" + ClientMessage.class.getName());
 
     this.producer = new KafkaProducer<>(props);
   }
@@ -51,10 +54,10 @@ public class RestProducer
 
     final long time = System.currentTimeMillis();
 
-    final ProducerRecord<String, String> record = new ProducerRecord<>(
+    final ProducerRecord<String, ClientMessage> record = new ProducerRecord<>(
         topic,  // Topic
         key,    // Key
-        value   // Value
+        new ClientMessage(key, value) // Value
     );
 
     producer.send(record, (metadata, e) ->
@@ -103,6 +106,13 @@ 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
   {