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(AdderResults adderResults)
22 return new ApplicationRecordHandler(adderResults);
26 public AdderResults adderResults()
28 return new AdderResults();
32 public ApplicationRebalanceListener rebalanceListener(
33 ApplicationRecordHandler recordHandler,
34 AdderResults adderResults,
35 StateRepository stateRepository,
36 ApplicationProperties properties)
38 return new ApplicationRebalanceListener(
42 properties.getClientId(),
43 Clock.systemDefaultZone(),
44 properties.getCommitInterval());
48 public EndlessConsumer<String, String> endlessConsumer(
49 KafkaConsumer<String, String> kafkaConsumer,
50 ExecutorService executor,
51 ApplicationRebalanceListener rebalanceListener,
52 ApplicationRecordHandler recordHandler,
53 ApplicationProperties properties)
56 new EndlessConsumer<>(
58 properties.getClientId(),
59 properties.getTopic(),
66 public ExecutorService executor()
68 return Executors.newSingleThreadExecutor();
71 @Bean(destroyMethod = "close")
72 public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
74 Properties props = new Properties();
76 props.put("bootstrap.servers", properties.getBootstrapServer());
77 props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
78 props.put("group.id", properties.getGroupId());
79 props.put("client.id", properties.getClientId());
80 props.put("auto.offset.reset", properties.getAutoOffsetReset());
81 props.put("auto.commit.interval.ms", (int)properties.getCommitInterval().toMillis());
82 props.put("metadata.max.age.ms", "1000");
83 props.put("key.deserializer", StringDeserializer.class.getName());
84 props.put("value.deserializer", StringDeserializer.class.getName());
86 return new KafkaConsumer<>(props);