1 package de.juplo.kafka;
3 import org.apache.kafka.clients.consumer.KafkaConsumer;
4 import org.apache.kafka.common.serialization.StringDeserializer;
5 import org.springframework.boot.context.properties.EnableConfigurationProperties;
6 import org.springframework.context.annotation.Bean;
7 import org.springframework.context.annotation.Configuration;
9 import java.time.Clock;
10 import java.util.Properties;
11 import java.util.concurrent.ExecutorService;
12 import java.util.concurrent.Executors;
16 @EnableConfigurationProperties(ApplicationProperties.class)
17 public class ApplicationConfiguration
20 public ApplicationRecordHandler recordHandler()
22 return new ApplicationRecordHandler();
26 public ApplicationRebalanceListener rebalanceListener(
27 ApplicationRecordHandler recordHandler,
28 StateRepository stateRepository,
29 ApplicationProperties properties)
31 return new ApplicationRebalanceListener(
34 properties.getClientId(),
35 Clock.systemDefaultZone(),
36 properties.getCommitInterval());
40 public EndlessConsumer<String, String> endlessConsumer(
41 KafkaConsumer<String, String> kafkaConsumer,
42 ExecutorService executor,
43 ApplicationRebalanceListener rebalanceListener,
44 ApplicationRecordHandler recordHandler,
45 ApplicationProperties properties)
48 new EndlessConsumer<>(
50 properties.getClientId(),
51 properties.getTopic(),
58 public ExecutorService executor()
60 return Executors.newSingleThreadExecutor();
63 @Bean(destroyMethod = "close")
64 public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
66 Properties props = new Properties();
68 props.put("bootstrap.servers", properties.getBootstrapServer());
69 props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
70 props.put("group.id", properties.getGroupId());
71 props.put("client.id", properties.getClientId());
72 props.put("auto.offset.reset", properties.getAutoOffsetReset());
73 props.put("metadata.max.age.ms", "1000");
74 props.put("key.deserializer", StringDeserializer.class.getName());
75 props.put("value.deserializer", StringDeserializer.class.getName());
77 return new KafkaConsumer<>(props);