import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.TopicPartition;
-import org.apache.kafka.common.serialization.BytesDeserializer;
-import org.apache.kafka.common.serialization.BytesSerializer;
-import org.apache.kafka.common.serialization.LongSerializer;
-import org.apache.kafka.common.serialization.StringSerializer;
+import org.apache.kafka.common.errors.RecordDeserializationException;
+import org.apache.kafka.common.serialization.*;
import org.apache.kafka.common.utils.Bytes;
import org.junit.jupiter.api.*;
import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer;
import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.context.annotation.Bean;
import static de.juplo.kafka.ApplicationTests.PARTITIONS;
import static de.juplo.kafka.ApplicationTests.TOPIC;
-import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.*;
import static org.awaitility.Awaitility.*;
@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
@TestPropertySource(
properties = {
- "consumer.bootstrap-server=${spring.embedded.kafka.brokers}",
+ "spring.kafka.consumer.bootstrap-servers=${spring.embedded.kafka.brokers}",
"consumer.topic=" + TOPIC })
@EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS)
@Slf4j
StringSerializer stringSerializer = new StringSerializer();
- LongSerializer longSerializer = new LongSerializer();
+ @Autowired
+ Serializer valueSerializer;
@Autowired
KafkaProducer<String, Bytes> kafkaProducer;
@Autowired
@Autowired
KafkaConsumer<Bytes, Bytes> offsetConsumer;
@Autowired
- ApplicationProperties properties;
+ ApplicationProperties applicationProperties;
+ @Autowired
+ KafkaProperties kafkaProperties;
@Autowired
ExecutorService executor;
EndlessConsumer<String, Long> endlessConsumer;
Map<TopicPartition, Long> oldOffsets;
Map<TopicPartition, Long> newOffsets;
+ Set<ConsumerRecord<String, Long>> receivedRecords;
/** Tests methods */
@Order(1) // << The poistion pill is not skipped. Hence, this test must run first
void commitsCurrentOffsetsOnSuccess() throws ExecutionException, InterruptedException
{
- send100Messages(i -> new Bytes(longSerializer.serialize(TOPIC, i)));
-
- Set<ConsumerRecord<String, Long>> received = new HashSet<>();
- testHandler = record -> received.add(record);
+ send100Messages(i -> new Bytes(valueSerializer.serialize(TOPIC, i)));
await("100 records received")
.atMost(Duration.ofSeconds(30))
- .until(() -> received.size() >= 100);
+ .until(() -> receivedRecords.size() >= 100);
await("Offsets committed")
.atMost(Duration.ofSeconds(10))
checkSeenOffsetsForProgress();
compareToCommitedOffsets(newOffsets);
});
+
+ assertThatExceptionOfType(IllegalStateException.class)
+ .isThrownBy(() -> endlessConsumer.exitStatus())
+ .describedAs("Consumer should still be running");
}
@Test
@Order(2)
- void commitsNoOffsetsOnError()
+ void commitsOffsetOfErrorForReprocessingOnError()
{
send100Messages(counter ->
counter == 77
? new Bytes(stringSerializer.serialize(TOPIC, "BOOM!"))
- : new Bytes(longSerializer.serialize(TOPIC, counter)));
+ : new Bytes(valueSerializer.serialize(TOPIC, counter)));
await("Consumer failed")
.atMost(Duration.ofSeconds(30))
.until(() -> !endlessConsumer.running());
checkSeenOffsetsForProgress();
- compareToCommitedOffsets(oldOffsets);
+ compareToCommitedOffsets(newOffsets);
+
+ endlessConsumer.start();
+ await("Consumer failed")
+ .atMost(Duration.ofSeconds(30))
+ .until(() -> !endlessConsumer.running());
+
+ checkSeenOffsetsForProgress();
+ compareToCommitedOffsets(newOffsets);
+ assertThat(receivedRecords.size())
+ .describedAs("Received not all sent events")
+ .isLessThan(100);
+
+ assertThatNoException()
+ .describedAs("Consumer should not be running")
+ .isThrownBy(() -> endlessConsumer.exitStatus());
+ assertThat(endlessConsumer.exitStatus())
+ .describedAs("Consumer should have exited abnormally")
+ .containsInstanceOf(RecordDeserializationException.class);
}
{
Long expected = offsetsToCheck.get(tp) + 1;
log.debug("Checking, if the offset for {} is {}", tp, expected);
- assertThat(offset).isEqualTo(expected);
+ assertThat(offset)
+ .describedAs("Committed offset corresponds to the offset of the consumer")
+ .isEqualTo(expected);
});
}
withProgress.add(tp);
}
});
- assertThat(withProgress).isNotEmpty().describedAs("Found no partitions with any offset-progress");
+ assertThat(withProgress)
+ .describedAs("Some offsets must have changed, compared to the old offset-positions")
+ .isNotEmpty();
}
oldOffsets = new HashMap<>();
newOffsets = new HashMap<>();
+ receivedRecords = new HashSet<>();
doForCurrentOffsets((tp, offset) ->
{
newOffsets.put(
new TopicPartition(record.topic(), record.partition()),
record.offset());
+ receivedRecords.add(record);
testHandler.accept(record);
};
endlessConsumer =
new EndlessConsumer<>(
executor,
- properties.getClientId(),
- properties.getTopic(),
+ kafkaProperties.getConsumer().getClientId(),
+ applicationProperties.getTopic(),
kafkaConsumer,
captureOffsetAndExecuteTestHandler);
public static class Configuration
{
@Bean
- KafkaProducer<String, Bytes> kafkaProducer(ApplicationProperties properties)
+ Serializer<Long> serializer()
+ {
+ return new LongSerializer();
+ }
+
+ @Bean
+ KafkaProducer<String, Bytes> kafkaProducer(KafkaProperties properties)
{
Properties props = new Properties();
- props.put("bootstrap.servers", properties.getBootstrapServer());
+ props.put("bootstrap.servers", properties.getConsumer().getBootstrapServers());
props.put("linger.ms", 100);
props.put("key.serializer", StringSerializer.class.getName());
props.put("value.serializer", BytesSerializer.class.getName());
}
@Bean
- KafkaConsumer<Bytes, Bytes> offsetConsumer(ApplicationProperties properties)
+ KafkaConsumer<Bytes, Bytes> offsetConsumer(KafkaProperties properties)
{
Properties props = new Properties();
- props.put("bootstrap.servers", properties.getBootstrapServer());
+ props.put("bootstrap.servers", properties.getConsumer().getBootstrapServers());
props.put("client.id", "OFFSET-CONSUMER");
- props.put("group.id", properties.getGroupId());
+ props.put("group.id", properties.getConsumer().getGroupId());
props.put("key.deserializer", BytesDeserializer.class.getName());
props.put("value.deserializer", BytesDeserializer.class.getName());
projects / demos / kafka / training / blobdiff