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

   1 package de.juplo.kafka;
   2
   3 import lombok.RequiredArgsConstructor;
   4 import lombok.extern.slf4j.Slf4j;
   5 import org.apache.kafka.clients.consumer.ConsumerRecord;
   6 import org.springframework.beans.factory.annotation.Autowired;
   7 import org.springframework.beans.factory.annotation.Value;
   8 import org.springframework.kafka.annotation.KafkaListener;
   9 import org.springframework.stereotype.Component;
  10
  11 import java.util.function.Consumer;
  12
  13
  14 @Component
  15 @Slf4j
  16 @RequiredArgsConstructor
  17 public class EndlessConsumer<K, V>
  18 {
  19   @Value("${consumer.client-id}")
  20   String id;
  21   @Autowired
  22   Consumer<ConsumerRecord<K, V>> handler;
  23
  24
  25   @KafkaListener(topics = "${consumer.topic}")
  26   public void receive(ConsumerRecord<K, V> record)
  27   {
  28     log.info(
  29         "{} - {}: {}/{} - {}={}",
  30         id,
  31         record.offset(),
  32         record.topic(),
  33         record.partition(),
  34         record.key(),
  35         record.value()
  36     );
  37
  38     handler.accept(record);
  39   }
  40 }