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

diff --git a/src/main/java/de/juplo/kafka/SimpleProducer.java b/src/main/java/de/juplo/kafka/SimpleProducer.java
index c0a7334..1ebc851 100644 (file)
--- a/src/main/java/de/juplo/kafka/SimpleProducer.java
+++ b/src/main/java/de/juplo/kafka/SimpleProducer.java
@@ -20,18 +20,12 @@ public class SimpleProducer
 
   public SimpleProducer(String clientId, String topic)
   {
-    // tag::create[]
     Properties props = new Properties();
-    props.put("bootstrap.servers", "localhost:9092");
-    props.put("key.serializer", StringSerializer.class.getName());
-    props.put("value.serializer", StringSerializer.class.getName());
-
-    Producer<String, String> producer = new KafkaProducer<>(props);
-    // end::create[]
+    // TODO: Konfiguration für Producer zusammenstellen
 
     this.id = clientId;
     this.topic = topic;
-    this.producer = producer;
+    this.producer = null; // TODO: Eine Instanz von KafkaProducer erzeugen
   }
 
   public void run()
@@ -59,43 +53,12 @@ public class SimpleProducer
   {
     final long time = System.currentTimeMillis();
 
-    final ProducerRecord<String, String> record = new ProducerRecord<>(
-        topic,  // Topic
-        key,    // Key
-        value   // Value
-    );
-
-    producer.send(record, (metadata, e) ->
-    {
-      long now = System.currentTimeMillis();
-      if (e == null)
-      {
-        // HANDLE SUCCESS
-        produced++;
-        log.debug(
-            "{} - Sent key={} message={} partition={}/{} timestamp={} latency={}ms",
-            id,
-            record.key(),
-            record.value(),
-            metadata.partition(),
-            metadata.offset(),
-            metadata.timestamp(),
-            now - time
-        );
-      }
-      else
-      {
-        // HANDLE ERROR
-        log.error(
-            "{} - ERROR key={} timestamp={} latency={}ms: {}",
-            id,
-            record.key(),
-            metadata == null ? -1 : metadata.timestamp(),
-            now - time,
-            e.toString()
-        );
-      }
-    });
+    final ProducerRecord<String, String> record = null; // TODO:
+    // Instanz von ProducerRecord mit key & value aus den Parametern
+    // der Methode erzeugen und diesen an das Topic aus dem Attribut
+    // this.topic versenden.
+    // Dabei den Callback für die Ausgabe von Erfolg/Fehlern nutzen.
+    // Für ganz Schnelle: Versanddauer im Callback messen und ausgeben.
 
     long now = System.currentTimeMillis();
     log.trace(