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.ConsumerRecord;
   4 import org.apache.kafka.clients.consumer.KafkaConsumer;
   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.time.Clock;
  11 import java.util.Properties;
  12 import java.util.concurrent.ExecutorService;
  13 import java.util.concurrent.Executors;
  14 import java.util.function.Consumer;
  15
  16
  17 @Configuration
  18 @EnableConfigurationProperties(ApplicationProperties.class)
  19 public class ApplicationConfiguration
  20 {
  21   @Bean
  22   public EndlessConsumer endlessConsumer(
  23       KafkaConsumer<String, String> kafkaConsumer,
  24       ExecutorService executor,
  25       PartitionStatisticsRepository repository,
  26       ApplicationProperties properties)
  27   {
  28     return
  29         new EndlessConsumer(
  30             executor,
  31             repository,
  32             properties.getClientId(),
  33             properties.getTopic(),
  34             Clock.systemDefaultZone(),
  35             properties.getCommitInterval(),
  36             kafkaConsumer);
  37   }
  38
  39   @Bean
  40   public ExecutorService executor()
  41   {
  42     return Executors.newSingleThreadExecutor();
  43   }
  44
  45   @Bean(destroyMethod = "close")
  46   public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
  47   {
  48     Properties props = new Properties();
  49
  50     props.put("bootstrap.servers", properties.getBootstrapServer());
  51     props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
  52     props.put("group.id", properties.getGroupId());
  53     props.put("client.id", properties.getClientId());
  54     props.put("enable.auto.commit", false);
  55     props.put("auto.offset.reset", properties.getAutoOffsetReset());
  56     props.put("metadata.max.age.ms", "1000");
  57     props.put("key.deserializer", StringDeserializer.class.getName());
  58     props.put("value.deserializer", StringDeserializer.class.getName());
  59
  60     return new KafkaConsumer<>(props);
  61   }
  62 }