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.util.Optional;
11 import java.util.Properties;
12 import java.util.concurrent.ExecutorService;
13 import java.util.concurrent.Executors;
17 @EnableConfigurationProperties(ApplicationProperties.class)
18 public class ApplicationConfiguration
21 public ApplicationRecordHandler recordHandler(
22 AdderResults adderResults,
23 ApplicationProperties properties)
25 return new ApplicationRecordHandler(
27 Optional.ofNullable(properties.getThrottle()),
28 properties.getClientId());
32 public AdderResults adderResults()
34 return new AdderResults();
38 public ApplicationRebalanceListener rebalanceListener(
39 ApplicationRecordHandler recordHandler,
40 AdderResults adderResults,
41 StateRepository stateRepository,
42 Consumer<String, String> consumer,
43 ApplicationProperties properties)
45 return new ApplicationRebalanceListener(
49 properties.getClientId(),
50 properties.getTopic(),
55 public EndlessConsumer<String, String> endlessConsumer(
56 KafkaConsumer<String, String> kafkaConsumer,
57 ExecutorService executor,
58 ApplicationRebalanceListener rebalanceListener,
59 ApplicationRecordHandler recordHandler,
60 ApplicationProperties properties)
63 new EndlessConsumer<>(
65 properties.getClientId(),
66 properties.getTopic(),
73 public ExecutorService executor()
75 return Executors.newSingleThreadExecutor();
78 @Bean(destroyMethod = "close")
79 public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
81 Properties props = new Properties();
83 props.put("bootstrap.servers", properties.getBootstrapServer());
84 props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
85 props.put("group.id", properties.getGroupId());
86 props.put("client.id", properties.getClientId());
87 props.put("enable.auto.commit", false);
88 props.put("auto.offset.reset", properties.getAutoOffsetReset());
89 props.put("metadata.max.age.ms", "1000");
90 props.put("key.deserializer", StringDeserializer.class.getName());
91 props.put("value.deserializer", StringDeserializer.class.getName());
93 return new KafkaConsumer<>(props);