X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fwordcount%2Fcounter%2FCounterStreamProcessor.java;h=3dd8c0f85305210a74563083383b3f616392235c;hb=3ff17b238afc765fe944a20ef67a2f6288fd5df2;hp=bccb253b0a9cb92b8863f3954b6028a6dcedb09e;hpb=cf177bd69764eb86220cdb871b37435c6c562640;p=demos%2Fkafka%2Fwordcount

diff --git a/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java b/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
index bccb253..3dd8c0f 100644
--- a/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
+++ b/src/main/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessor.java
@@ -1,17 +1,15 @@
 package de.juplo.kafka.wordcount.counter;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.common.serialization.Serdes;
 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 org.apache.kafka.streams.kstream.Consumed;
 import org.apache.kafka.streams.kstream.KStream;
 import org.apache.kafka.streams.kstream.Materialized;
 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
-import org.apache.kafka.streams.kstream.*;
-import org.springframework.kafka.support.serializer.JsonSerde;
 
 import java.util.Properties;
 
@@ -26,14 +24,12 @@ public class CounterStreamProcessor
 			String inputTopic,
 			String outputTopic,
 			Properties properties,
-			KeyValueBytesStoreSupplier storeSupplier,
-			ObjectMapper mapper)
+			KeyValueBytesStoreSupplier storeSupplier)
 	{
 		Topology topology = CounterStreamProcessor.buildTopology(
 				inputTopic,
 				outputTopic,
-				storeSupplier,
-				mapper);
+				storeSupplier);
 
 		streams = new KafkaStreams(topology, properties);
 	}
@@ -41,37 +37,21 @@ public class CounterStreamProcessor
 	static Topology buildTopology(
 			String inputTopic,
 			String outputTopic,
-			KeyValueBytesStoreSupplier storeSupplier,
-			ObjectMapper mapper)
+			KeyValueBytesStoreSupplier storeSupplier)
 	{
 		StreamsBuilder builder = new StreamsBuilder();
 
 		KStream<String, Word> source = builder.stream(
 				inputTopic,
-				Consumed.with(
-						Serdes.String(),
-						new JsonSerde<>(Word.class)
-								.ignoreTypeHeaders()));
+				Consumed.with(Serdes.String(), null));
 
 		source
 				.map((key, word) -> new KeyValue<>(word, word))
-				.groupByKey(Grouped.with(
-						new JsonSerde<>(Word.class)
-								.forKeys()
-								.noTypeInfo(),
-						new JsonSerde<>(Word.class)
-								.noTypeInfo()))
+				.groupByKey()
 				.count(Materialized.as(storeSupplier))
 				.toStream()
-				.map((word, count) -> new KeyValue<>(word, WordCount.of(word.getUser(), word.getWord(), count)))
-				.to(
-						outputTopic,
-						Produced.with(
-								new JsonSerde<>(Word.class)
-										.forKeys()
-										.noTypeInfo(),
-								new JsonSerde<>(WordCount.class)
-										.noTypeInfo()));
+				.map((word, count) -> new KeyValue<>(word, WordCount.of(word, count)))
+				.to(outputTopic);
 
 		Topology topology = builder.build();
 		log.info("\n\n{}", topology.describe());