X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fwordcount%2Fsplitter%2FSplitterApplication.java;h=fd3becda113fcf10bb3192b01ba8df73e3a1090f;hb=b198c660c6add81b3a8c9429467edec8d08dddd8;hp=d46a7cd4c4b3fd9e2b73f251d9e74f44f93772c7;hpb=d5f54354b2b44d125493c830bf0475f7992ee395;p=demos%2Fkafka%2Fwordcount

diff --git a/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterApplication.java b/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterApplication.java
index d46a7cd..fd3becd 100644
--- a/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterApplication.java
+++ b/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterApplication.java
@@ -4,20 +4,70 @@ import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
-
-import java.time.Clock;
+import org.springframework.context.annotation.ImportResource;
+import org.springframework.expression.common.LiteralExpression;
+import org.springframework.integration.annotation.InboundChannelAdapter;
+import org.springframework.integration.annotation.ServiceActivator;
+import org.springframework.integration.config.EnableIntegration;
+import org.springframework.integration.kafka.inbound.KafkaMessageSource;
+import org.springframework.integration.kafka.outbound.KafkaProducerMessageHandler;
+import org.springframework.integration.support.MessageBuilder;
+import org.springframework.kafka.core.ConsumerFactory;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.kafka.listener.ConsumerProperties;
+import org.springframework.kafka.support.KafkaHeaders;
+import org.springframework.messaging.Message;
+import org.springframework.messaging.MessageChannel;
+import org.springframework.messaging.MessageHandler;
+import org.springframework.messaging.MessageHeaders;
+import org.springframework.messaging.support.ChannelInterceptor;
 
 
 @SpringBootApplication
 @EnableConfigurationProperties(SplitterApplicationProperties.class)
+@EnableIntegration
+@ImportResource("classpath:integration.xml")
 public class SplitterApplication
 {
 	@Bean
-	Clock clock()
+	ChannelInterceptor keyInterceptor ()
+	{
+		return new ChannelInterceptor()
+		{
+			@Override
+			public Message<?> preSend(Message<?> message, MessageChannel channel)
+			{
+				MessageHeaders headers = message.getHeaders();
+				Object key = headers.get(KafkaHeaders.RECEIVED_MESSAGE_KEY);
+				return
+						MessageBuilder
+								.fromMessage(message)
+								.setHeader(KafkaHeaders.MESSAGE_KEY, key)
+								.build();
+			}
+		};
+	}
+
+	@InboundChannelAdapter(channel = "recordings")
+	@Bean
+	KafkaMessageSource<String, String> source(
+			ConsumerFactory<String, String> cf,
+			SplitterApplicationProperties properties)
 	{
-		return Clock.systemDefaultZone();
+		return new KafkaMessageSource<>(cf, new ConsumerProperties(properties.getInputTopic()));
 	}
 
+	@Bean
+	@ServiceActivator(inputChannel = "words")
+	MessageHandler handler(
+			KafkaTemplate<String, String> kafkaTemplate,
+			SplitterApplicationProperties properties)
+	{
+		KafkaProducerMessageHandler<String, String> handler =
+				new KafkaProducerMessageHandler<>(kafkaTemplate);
+		handler.setTopicExpression(new LiteralExpression(properties.getOutputTopic()));
+		return handler;
+	}
 
 	public static void main(String[] args)
 	{