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.Executors;
  12
  13
  14 @Configuration
  15 @EnableConfigurationProperties(ApplicationProperties.class)
  16 public class ApplicationConfiguration
  17 {
  18   @Bean
  19   public EndlessConsumer endlessConsumer(
  20       KafkaConsumer<String, String> kafkaConsumer,
  21       ApplicationProperties properties)
  22   {
  23     EndlessConsumer consumer =
  24         new EndlessConsumer(
  25             Executors.newFixedThreadPool(1),
  26             properties.getClientId(),
  27             properties.getTopic(),
  28             kafkaConsumer);
  29
  30     consumer.start();
  31
  32     return consumer;
  33   }
  34
  35   @Bean(destroyMethod = "close")
  36   public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
  37   {
  38     Properties props = new Properties();
  39
  40     props.put("bootstrap.servers", properties.getBootstrapServer());
  41     props.put("group.id", properties.getGroupId());
  42     props.put("client.id", properties.getClientId());
  43     props.put("auto.offset.reset", properties.getAutoOffsetReset());
  44     props.put("metadata.max.age.ms", "1000");
  45     props.put("key.deserializer", StringDeserializer.class.getName());
  46     props.put("value.deserializer", LongDeserializer.class.getName());
  47
  48     return new KafkaConsumer<>(props);
  49   }
  50 }