WIP

[demos/kafka/wordcount] / src / main / java / de / juplo / kafka / wordcount / top10 / Top10StreamProcessor.java

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 (file)
--- 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()