TransferRepository does not need any synchronization

[demos/kafka/demos-kafka-payment-system-transfer] / src / main / java / de / juplo / kafka / payment / transfer / TransferServiceApplication.java

diff --git a/src/main/java/de/juplo/kafka/payment/transfer/TransferServiceApplication.java b/src/main/java/de/juplo/kafka/payment/transfer/TransferServiceApplication.java
index 65f683c..02842e5 100644 (file)
--- a/src/main/java/de/juplo/kafka/payment/transfer/TransferServiceApplication.java
+++ b/src/main/java/de/juplo/kafka/payment/transfer/TransferServiceApplication.java
@@ -3,12 +3,16 @@ package de.juplo.kafka.payment.transfer;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import de.juplo.kafka.payment.transfer.adapter.KafkaMessagingService;
+import de.juplo.kafka.payment.transfer.adapter.TransferConsumer;
 import de.juplo.kafka.payment.transfer.domain.TransferService;
 import de.juplo.kafka.payment.transfer.ports.MessagingService;
 import de.juplo.kafka.payment.transfer.ports.TransferRepository;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.clients.consumer.ConsumerConfig;
+import org.apache.kafka.clients.consumer.KafkaConsumer;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.ProducerConfig;
+import org.apache.kafka.common.serialization.StringDeserializer;
 import org.apache.kafka.common.serialization.StringSerializer;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
@@ -16,6 +20,8 @@ import org.springframework.boot.context.properties.EnableConfigurationProperties
 import org.springframework.context.annotation.Bean;
 
 import java.util.Properties;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 
 @SpringBootApplication
@@ -34,6 +40,38 @@ public class TransferServiceApplication
     return new KafkaProducer<>(props);
   }
 
+  @Bean
+  KafkaConsumer<String, String> consumer(TransferServiceProperties properties)
+  {
+    Properties props = new Properties();
+    props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, properties.bootstrapServers);
+    props.put(ConsumerConfig.GROUP_ID_CONFIG, properties.groupId);
+    props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
+    props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
+
+    return new KafkaConsumer<>(props);
+  }
+
+  @Bean(destroyMethod = "shutdown")
+  ExecutorService executorService()
+  {
+    return Executors.newFixedThreadPool(1);
+  }
+
+  @Bean(destroyMethod = "shutdown")
+  TransferConsumer transferConsumer(
+      TransferServiceProperties properties,
+      KafkaConsumer<String, String> consumer,
+      ExecutorService executorService,
+      ObjectMapper mapper,
+      TransferService transferService)
+  {
+    TransferConsumer transferConsumer =
+        new TransferConsumer(properties.topic, consumer, executorService, mapper, transferService);
+    transferConsumer.start();
+    return transferConsumer;
+  }
+
   @Bean
   MessagingService kafkaMessagingService(
       KafkaProducer<String, String> producer,