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.util.Optional;
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(
21 AdderResults adderResults,
22 ApplicationProperties properties)
24 return new ApplicationRecordHandler(
26 Optional.ofNullable(properties.getThrottle()),
27 properties.getClientId());
31 public AdderResults adderResults()
33 return new AdderResults();
37 public ApplicationRebalanceListener rebalanceListener(
38 ApplicationRecordHandler recordHandler,
39 AdderResults adderResults,
40 StateRepository stateRepository,
41 ApplicationProperties properties)
43 return new ApplicationRebalanceListener(
47 properties.getClientId());
51 public EndlessConsumer<String, String> endlessConsumer(
52 KafkaConsumer<String, String> kafkaConsumer,
53 ExecutorService executor,
54 ApplicationRebalanceListener rebalanceListener,
55 ApplicationRecordHandler recordHandler,
56 ApplicationProperties properties)
59 new EndlessConsumer<>(
61 properties.getClientId(),
62 properties.getTopic(),
69 public ExecutorService executor()
71 return Executors.newSingleThreadExecutor();
74 @Bean(destroyMethod = "close")
75 public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
77 Properties props = new Properties();
79 props.put("bootstrap.servers", properties.getBootstrapServer());
80 props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.StickyAssignor");
81 props.put("group.id", properties.getGroupId());
82 props.put("client.id", properties.getClientId());
83 props.put("auto.offset.reset", properties.getAutoOffsetReset());
84 props.put("auto.commit.interval.ms", (int)properties.getCommitInterval().toMillis());
85 props.put("metadata.max.age.ms", "1000");
86 props.put("key.deserializer", StringDeserializer.class.getName());
87 props.put("value.deserializer", StringDeserializer.class.getName());
89 return new KafkaConsumer<>(props);