import org.junit.jupiter.api.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
-import org.springframework.boot.test.autoconfigure.data.mongo.AutoConfigureDataMongo;
import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer;
import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.context.annotation.Bean;
properties = {
"consumer.bootstrap-server=${spring.embedded.kafka.brokers}",
"consumer.topic=" + TOPIC,
- "consumer.commit-interval=1s",
- "spring.mongodb.embedded.version=4.4.13" })
+ "consumer.commit-interval=1s" })
@EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS)
@EnableAutoConfiguration
-@AutoConfigureDataMongo
@Slf4j
class ApplicationTests
{
@Autowired
KafkaConsumer<Bytes, Bytes> offsetConsumer;
@Autowired
- PartitionStatisticsRepository partitionStatisticsRepository;
- @Autowired
ApplicationProperties properties;
@Autowired
ExecutorService executor;
@Autowired
- PartitionStatisticsRepository repository;
- @Autowired
- KeyCountingRebalanceListener keyCountingRebalanceListener;
- @Autowired
- KeyCountingRecordHandler keyCountingRecordHandler;
+ RecordHandler noopRecordHandler;
EndlessConsumer<String, Long> endlessConsumer;
Map<TopicPartition, Long> oldOffsets;
void seekToEnd()
{
offsetConsumer.assign(partitions());
+ offsetConsumer.seekToEnd(partitions());
partitions().forEach(tp ->
{
+ // seekToEnd() works lazily: it only takes effect on poll()/position()
Long offset = offsetConsumer.position(tp);
log.info("New position for {}: {}", tp, offset);
- Integer partition = tp.partition();
- StatisticsDocument document =
- partitionStatisticsRepository
- .findById(partition.toString())
- .orElse(new StatisticsDocument(partition));
- document.offset = offset;
- partitionStatisticsRepository.save(document);
});
+ // The new positions must be commited!
+ offsetConsumer.commitSync();
offsetConsumer.unsubscribe();
}
void doForCurrentOffsets(BiConsumer<TopicPartition, Long> consumer)
{
- partitions().forEach(tp ->
- {
- String partition = Integer.toString(tp.partition());
- Optional<Long> offset = partitionStatisticsRepository.findById(partition).map(document -> document.offset);
- consumer.accept(tp, offset.orElse(0l));
- });
- }
+ offsetConsumer.assign(partitions());
+ partitions().forEach(tp -> consumer.accept(tp, offsetConsumer.position(tp)));
+ offsetConsumer.unsubscribe();
+ }
List<TopicPartition> partitions()
{
});
TestRecordHandler<String, Long> captureOffsetAndExecuteTestHandler =
- new TestRecordHandler<String, Long>(keyCountingRecordHandler) {
+ new TestRecordHandler<String, Long>(noopRecordHandler) {
@Override
public void onNewRecord(ConsumerRecord<String, Long> record)
{
properties.getClientId(),
properties.getTopic(),
kafkaConsumer,
- keyCountingRebalanceListener,
captureOffsetAndExecuteTestHandler);
endlessConsumer.start();
Properties props = new Properties();
props.put("bootstrap.servers", properties.getBootstrapServer());
props.put("client.id", "OFFSET-CONSUMER");
- props.put("enable.auto.commit", false);
- props.put("auto.offset.reset", "latest");
+ props.put("group.id", properties.getGroupId());
props.put("key.deserializer", BytesDeserializer.class.getName());
props.put("value.deserializer", BytesDeserializer.class.getName());