juplo.de Git - demos/kafka/training/blob - src/main/java/de/juplo/kafka/ApplicationConfiguration.java

   1 package de.juplo.kafka;
   2
   3 import org.apache.kafka.clients.consumer.Consumer;
   4 import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
   5 import org.springframework.boot.context.properties.EnableConfigurationProperties;
   6 import org.springframework.context.annotation.Bean;
   7 import org.springframework.context.annotation.Configuration;
   8
   9 import org.springframework.kafka.core.ConsumerFactory;
  10
  11
  12 @Configuration
  13 @EnableConfigurationProperties({ KafkaProperties.class, ApplicationProperties.class })
  14 public class ApplicationConfiguration
  15 {
  16   @Bean
  17   public AdderBusinessLogic adder()
  18   {
  19     return new AdderBusinessLogic();
  20   }
  21
  22   @Bean
  23   public MessageHandler messageHandler(
  24     KafkaProperties properties,
  25     AdderBusinessLogic adder)
  26   {
  27     return new MessageHandler(
  28       properties.getClientId(),
  29       adder);
  30   }
  31
  32   @Bean
  33   public SimpleConsumer simpleConsumer(
  34       Consumer<String, Message> kafkaConsumer,
  35       MessageHandler messageHandler,
  36       KafkaProperties kafkaProperties,
  37       ApplicationProperties applicationProperties)
  38   {
  39     return
  40         new SimpleConsumer(
  41             kafkaProperties.getClientId(),
  42             applicationProperties.getTopic(),
  43             kafkaConsumer,
  44             messageHandler);
  45   }
  46
  47   @Bean
  48   public Consumer<?, ?> kafkaConsumer(ConsumerFactory<?, ?> factory)
  49   {
  50     return factory.createConsumer();
  51   }
  52 }