package de.juplo.kafka;
-import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.apache.kafka.common.serialization.LongDeserializer;
import org.apache.kafka.common.serialization.StringDeserializer;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
-import java.util.function.Consumer;
@Configuration
public class ApplicationConfiguration
{
@Bean
- public Consumer<ConsumerRecord<String, String>> consumer()
+ public KeyCountingRecordHandler keyCountingRecordHandler()
{
- return (record) ->
- {
- // Handle record
- };
+ return new KeyCountingRecordHandler();
}
@Bean
- public EndlessConsumer endlessConsumer(
- KafkaConsumer<String, String> kafkaConsumer,
+ public EndlessConsumer<String, Long> endlessConsumer(
+ KafkaConsumer<String, Long> kafkaConsumer,
ExecutorService executor,
- Consumer<ConsumerRecord<String, String>> handler,
+ KeyCountingRecordHandler keyCountingRecordHandler,
ApplicationProperties properties)
{
return
- new EndlessConsumer(
+ new EndlessConsumer<>(
executor,
properties.getClientId(),
properties.getTopic(),
kafkaConsumer,
- handler);
+ keyCountingRecordHandler);
}
@Bean
}
@Bean(destroyMethod = "close")
- public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
+ public KafkaConsumer<String, Long> kafkaConsumer(ApplicationProperties properties)
{
Properties props = new Properties();
props.put("bootstrap.servers", properties.getBootstrapServer());
+ props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
props.put("group.id", properties.getGroupId());
props.put("client.id", properties.getClientId());
props.put("auto.offset.reset", properties.getAutoOffsetReset());
+ props.put("auto.commit.interval.ms", (int)properties.getCommitInterval().toMillis());
props.put("metadata.max.age.ms", "1000");
props.put("key.deserializer", StringDeserializer.class.getName());
props.put("value.deserializer", LongDeserializer.class.getName());