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.KafkaConsumer;
   4 import org.apache.kafka.common.serialization.LongDeserializer;
   5 import org.apache.kafka.common.serialization.StringDeserializer;
   6 import org.springframework.boot.context.properties.EnableConfigurationProperties;
   7 import org.springframework.context.annotation.Bean;
   8 import org.springframework.context.annotation.Configuration;
   9
  10 import java.util.Properties;
  11 import java.util.concurrent.ExecutorService;
  12 import java.util.concurrent.Executors;
  13
  14
  15 @Configuration
  16 @EnableConfigurationProperties(ApplicationProperties.class)
  17 public class ApplicationConfiguration
  18 {
  19   @Bean
  20   public EndlessConsumer endlessConsumer(
  21       KafkaConsumer<String, String> kafkaConsumer,
  22       ExecutorService executor,
  23       ApplicationProperties properties)
  24   {
  25     return
  26         new EndlessConsumer(
  27             executor,
  28             properties.getClientId(),
  29             properties.getTopic(),
  30             kafkaConsumer);
  31   }
  32
  33   @Bean
  34   public ExecutorService executor()
  35   {
  36     return Executors.newSingleThreadExecutor();
  37   }
  38
  39   @Bean(destroyMethod = "close")
  40   public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
  41   {
  42     Properties props = new Properties();
  43
  44     props.put("bootstrap.servers", properties.getBootstrapServer());
  45     props.put("group.id", properties.getGroupId());
  46     props.put("client.id", properties.getClientId());
  47     props.put("auto.offset.reset", properties.getAutoOffsetReset());
  48     props.put("metadata.max.age.ms", "1000");
  49     props.put("key.deserializer", StringDeserializer.class.getName());
  50     props.put("value.deserializer", LongDeserializer.class.getName());
  51
  52     return new KafkaConsumer<>(props);
  53   }
  54 }