import org.apache.kafka.common.utils.Bytes;
import org.junit.jupiter.api.*;
import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer;
import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.context.annotation.Bean;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.function.BiConsumer;
-import java.util.function.Consumer;
-import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
@TestPropertySource(
properties = {
"consumer.bootstrap-server=${spring.embedded.kafka.brokers}",
- "consumer.topic=" + TOPIC })
+ "consumer.topic=" + TOPIC,
+ "consumer.commit-interval=1s" })
@EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS)
+@EnableAutoConfiguration
@Slf4j
class ApplicationTests
{
ApplicationProperties properties;
@Autowired
ExecutorService executor;
+ @Autowired
+ RecordHandler noopRecordHandler;
- Consumer<ConsumerRecord<String, Long>> testHandler;
EndlessConsumer<String, Long> endlessConsumer;
Map<TopicPartition, Long> oldOffsets;
Map<TopicPartition, Long> newOffsets;
/** Tests methods */
@Test
- @Order(1) // << The poistion pill is not skipped. Hence, this test must run first
void commitsCurrentOffsetsOnSuccess() throws ExecutionException, InterruptedException
{
send100Messages((partition, key, counter) ->
await("100 records received")
.atMost(Duration.ofSeconds(30))
+ .pollInterval(Duration.ofSeconds(1))
.until(() -> receivedRecords.size() >= 100);
await("Offsets committed")
.atMost(Duration.ofSeconds(10))
+ .pollInterval(Duration.ofSeconds(1))
.untilAsserted(() ->
{
checkSeenOffsetsForProgress();
}
@Test
- @Order(2)
- void commitsOffsetOfErrorForReprocessingOnError()
+ void commitsOffsetOfErrorForReprocessingOnDeserializationError()
{
send100Messages((partition, key, counter) ->
{
await("Consumer failed")
.atMost(Duration.ofSeconds(30))
+ .pollInterval(Duration.ofSeconds(1))
.until(() -> !endlessConsumer.running());
checkSeenOffsetsForProgress();
endlessConsumer.start();
await("Consumer failed")
.atMost(Duration.ofSeconds(30))
+ .pollInterval(Duration.ofSeconds(1))
.until(() -> !endlessConsumer.running());
checkSeenOffsetsForProgress();
Set<TopicPartition> withProgress = new HashSet<>();
partitions().forEach(tp ->
{
- Long oldOffset = oldOffsets.get(tp);
- Long newOffset = newOffsets.get(tp);
+ Long oldOffset = oldOffsets.get(tp) + 1;
+ Long newOffset = newOffsets.get(tp) + 1;
if (!oldOffset.equals(newOffset))
{
log.debug("Progress for {}: {} -> {}", tp, oldOffset, newOffset);
/** Helper methods for setting up and running the tests */
+ 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);
+ });
+ // The new positions must be commited!
+ offsetConsumer.commitSync();
+ offsetConsumer.unsubscribe();
+ }
+
void doForCurrentOffsets(BiConsumer<TopicPartition, Long> consumer)
{
offsetConsumer.assign(partitions());
@BeforeEach
public void init()
{
- testHandler = record -> {} ;
+ seekToEnd();
oldOffsets = new HashMap<>();
newOffsets = new HashMap<>();
newOffsets.put(tp, offset - 1);
});
- Consumer<ConsumerRecord<String, Long>> captureOffsetAndExecuteTestHandler =
- record ->
- {
- newOffsets.put(
- new TopicPartition(record.topic(), record.partition()),
- record.offset());
- receivedRecords.add(record);
- testHandler.accept(record);
+ TestRecordHandler<String, Long> captureOffsetAndExecuteTestHandler =
+ new TestRecordHandler<String, Long>(noopRecordHandler) {
+ @Override
+ public void onNewRecord(ConsumerRecord<String, Long> record)
+ {
+ newOffsets.put(
+ new TopicPartition(record.topic(), record.partition()),
+ record.offset());
+ receivedRecords.add(record);
+ }
};
endlessConsumer =