From 7fb4bdb91e549626367a0af182f14b7d01df5d38 Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Sat, 28 Sep 2024 11:58:11 +0200
Subject: [PATCH] Vorlage

* `metadata.maxage.ms` auf 5 Sekunden heruntergesetzt
* `README.sh` entfernt
* Aufruf von `close()` in der Vorlage entfernt
* Hinweis auf Callback aus der Vorlage entfernt
---
 README.sh                                     | 36 --------------
 .../java/de/juplo/kafka/ExampleProducer.java  | 49 +++----------------
 2 files changed, 6 insertions(+), 79 deletions(-)
 delete mode 100755 README.sh

diff --git a/README.sh b/README.sh
deleted file mode 100755
index 3d98ace7..00000000
--- a/README.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/bash
-
-IMAGE=juplo/simple-producer:1.0-SNAPSHOT
-
-if [ "$1" = "cleanup" ]
-then
-  docker compose -f docker/docker-compose.yml down -t0 -v --remove-orphans
-  mvn clean
-  exit
-fi
-
-docker compose -f docker/docker-compose.yml up -d --remove-orphans kafka-1 kafka-2 kafka-3
-docker compose -f docker/docker-compose.yml rm -svf producer
-
-if [[
-  $(docker image ls -q $IMAGE) == "" ||
-  "$1" = "build"
-]]
-then
-  mvn clean install || exit
-else
-  echo "Using image existing images:"
-  docker image ls $IMAGE
-fi
-
-docker compose -f docker/docker-compose.yml up --remove-orphans setup || exit 1
-
-
-docker compose -f docker/docker-compose.yml up -d producer
-sleep 5
-
-docker compose -f docker/docker-compose.yml exec cli kafkacat -b kafka:9092 -t test -c 20 -f'topic=%t\tpartition=%p\toffset=%o\tkey=%k\tvalue=%s\n'
-
-docker compose -f docker/docker-compose.yml stop producer
-docker compose -f docker/docker-compose.yml exec cli kafkacat -b kafka:9092 -t test -e -f'topic=%t\tpartition=%p\toffset=%o\tkey=%k\tvalue=%s\n'
-docker compose -f docker/docker-compose.yml logs producer
diff --git a/src/main/java/de/juplo/kafka/ExampleProducer.java b/src/main/java/de/juplo/kafka/ExampleProducer.java
index c3db7e7c..c9d8d1eb 100644
--- a/src/main/java/de/juplo/kafka/ExampleProducer.java
+++ b/src/main/java/de/juplo/kafka/ExampleProducer.java
@@ -26,10 +26,7 @@ public class ExampleProducer
     String clientId)
   {
     Properties props = new Properties();
-    props.put("bootstrap.servers", broker);
-    props.put("client.id", clientId); // Nur zur Wiedererkennung
-    props.put("key.serializer", StringSerializer.class.getName());
-    props.put("value.serializer", StringSerializer.class.getName());
+    // TODO: Konfiguration für den Producer zusammenstellen
 
     this.id = clientId;
     this.topic = topic;
@@ -54,8 +51,6 @@ public class ExampleProducer
     }
     finally
     {
-      log.info("{}: Closing the KafkaProducer", id);
-      producer.close();
       log.info("{}: Produced {} messages in total, exiting!", id, produced);
       done = true;
     }
@@ -65,43 +60,11 @@ public class ExampleProducer
   {
     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 message {}={}, partition={}, offset={}, timestamp={}, latency={}ms",
-          id,
-          key,
-          value,
-          metadata.partition(),
-          metadata.offset(),
-          metadata.timestamp(),
-          now - time
-        );
-      }
-      else
-      {
-        // HANDLE ERROR
-        log.error(
-          "{} - ERROR for message {}={}, latency={}ms: {}",
-          id,
-          key,
-          value,
-          now - time,
-          e.toString()
-        );
-      }
-    });
+    ProducerRecord<String, String> record = null;
+    // TODO:
+    //
+    // 1. ProducerRecord<String, String> erzeugen
+    // 2. Record mit producer.send(...) verschicken
 
     long now = System.currentTimeMillis();
     log.trace(
-- 
2.20.1