From a01b5436757600a44b20260798d7331c7e33a851 Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Tue, 14 May 2024 23:48:48 +0200
Subject: [PATCH] WIP

---
 .../top10/Top10ApplicationConfiguration.java    |  1 -
 .../wordcount/top10/Top10StreamProcessor.java   | 17 ++++++++++++++++-
 .../top10/Top10StreamProcessorTopologyTest.java |  9 +++------
 3 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/src/main/java/de/juplo/kafka/wordcount/top10/Top10ApplicationConfiguration.java b/src/main/java/de/juplo/kafka/wordcount/top10/Top10ApplicationConfiguration.java
index b43d825..ae161d8 100644
--- a/src/main/java/de/juplo/kafka/wordcount/top10/Top10ApplicationConfiguration.java
+++ b/src/main/java/de/juplo/kafka/wordcount/top10/Top10ApplicationConfiguration.java
@@ -1,6 +1,5 @@
 package de.juplo.kafka.wordcount.top10;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.clients.consumer.ConsumerConfig;
 import org.apache.kafka.streams.StreamsConfig;
diff --git a/src/main/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessor.java b/src/main/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessor.java
index e6deee0..084e425 100644
--- a/src/main/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessor.java
+++ b/src/main/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessor.java
@@ -4,6 +4,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.streams.KafkaStreams;
 import org.apache.kafka.streams.KeyValue;
 import org.apache.kafka.streams.StreamsBuilder;
+import org.apache.kafka.streams.Topology;
 
 import java.util.Properties;
 
@@ -18,6 +19,17 @@ public class Top10StreamProcessor
 			String inputTopic,
 			String outputTopic,
 			Properties props)
+	{
+		Topology topology = Top10StreamProcessor.buildTopology(
+				inputTopic,
+				outputTopic);
+
+		streams = new KafkaStreams(topology, props);
+	}
+
+	static Topology buildTopology(
+			String inputTopic,
+			String outputTopic)
 	{
 		StreamsBuilder builder = new StreamsBuilder();
 
@@ -40,7 +52,10 @@ public class Top10StreamProcessor
 				.toStream()
 				.to(outputTopic);
 
-		streams = new KafkaStreams(builder.build(), props);
+		Topology topology = builder.build();
+		log.info("\n\n{}", topology.describe());
+
+		return topology;
 	}
 
 	public void start()
diff --git a/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java b/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java
index 8b4a593..3a744dd 100644
--- a/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java
+++ b/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java
@@ -27,13 +27,10 @@ public class Top10StreamProcessorTopologyTest
   @Test
   public void test()
   {
-    Topology topology = CounterStreamProcessor.buildTopology(
-        IN,
-        OUT,
-        Stores.inMemoryKeyValueStore("TOPOLOGY-TEST"));
+    Topology topology = Top10StreamProcessor.buildTopology(IN, OUT);
 
-    CounterApplicationConfiguriation applicationConfiguriation =
-        new CounterApplicationConfiguriation();
+    Top10ApplicationConfiguriation applicationConfiguriation =
+        new Top10ApplicationConfiguriation();
     Properties streamProcessorProperties =
         applicationConfiguriation.streamProcessorProperties(new CounterApplicationProperties());
     Map<String, Object> propertyMap = convertToMap(streamProcessorProperties);
-- 
2.20.1