1 package de.juplo.kafka;
3 import org.apache.kafka.clients.consumer.Consumer;
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;
10 import java.time.Clock;
11 import java.util.Optional;
12 import java.util.Properties;
13 import java.util.concurrent.ExecutorService;
14 import java.util.concurrent.Executors;
18 @EnableConfigurationProperties(ApplicationProperties.class)
19 public class ApplicationConfiguration
22 public ApplicationRecordHandler recordHandler(
23 AdderResults adderResults,
24 ApplicationProperties properties)
26 return new ApplicationRecordHandler(
28 Optional.ofNullable(properties.getThrottle()),
29 properties.getClientId());
33 public AdderResults adderResults()
35 return new AdderResults();
39 public ApplicationRebalanceListener rebalanceListener(
40 ApplicationRecordHandler recordHandler,
41 AdderResults adderResults,
42 StateRepository stateRepository,
43 Consumer<String, String> consumer,
44 ApplicationProperties properties)
46 return new ApplicationRebalanceListener(
50 properties.getClientId(),
51 properties.getTopic(),
52 Clock.systemDefaultZone(),
53 properties.getCommitInterval(),
58 public EndlessConsumer<String, String> endlessConsumer(
59 KafkaConsumer<String, String> kafkaConsumer,
60 ExecutorService executor,
61 ApplicationRebalanceListener rebalanceListener,
62 ApplicationRecordHandler recordHandler,
63 ApplicationProperties properties)
66 new EndlessConsumer<>(
68 properties.getClientId(),
69 properties.getTopic(),
76 public ExecutorService executor()
78 return Executors.newSingleThreadExecutor();
81 @Bean(destroyMethod = "close")
82 public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
84 Properties props = new Properties();
86 props.put("bootstrap.servers", properties.getBootstrapServer());
87 props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
88 props.put("group.id", properties.getGroupId());
89 props.put("client.id", properties.getClientId());
90 props.put("enable.auto.commit", false);
91 props.put("auto.offset.reset", properties.getAutoOffsetReset());
92 props.put("metadata.max.age.ms", "1000");
93 props.put("key.deserializer", StringDeserializer.class.getName());
94 props.put("value.deserializer", StringDeserializer.class.getName());
96 return new KafkaConsumer<>(props);