import com.mongodb.client.MongoClient;
import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.consumer.KafkaConsumer;
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.errors.RecordDeserializationException;
import org.apache.kafka.common.serialization.*;
import org.apache.kafka.common.utils.Bytes;
import org.junit.jupiter.api.*;
import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Import;
+import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
import org.springframework.kafka.config.KafkaListenerEndpointRegistry;
import org.springframework.kafka.core.ConsumerFactory;
+import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
import org.springframework.kafka.test.context.EmbeddedKafka;
import org.springframework.test.context.TestPropertySource;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
@TestPropertySource(
properties = {
"spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}",
+ "spring.kafka.producer.bootstrap-servers=${spring.embedded.kafka.brokers}",
"sumup.adder.topic=" + TOPIC,
"spring.kafka.consumer.auto-commit-interval=500ms",
"spring.mongodb.embedded.version=4.4.13" })
@Autowired
TestRecordHandler recordHandler;
@Autowired
+ DeadLetterTopicConsumer deadLetterTopicConsumer;
+ @Autowired
EndlessConsumer endlessConsumer;
KafkaProducer<Bytes, Bytes> testRecordProducer;
@Test
void commitsCurrentOffsetsOnSuccess() throws Exception
{
- int numberOfGeneratedMessages =
- recordGenerator.generate(false, false, messageSender);
+ recordGenerator.generate(false, false, messageSender);
+
+ int numberOfGeneratedMessages = recordGenerator.getNumberOfMessages();
await(numberOfGeneratedMessages + " records received")
.atMost(Duration.ofSeconds(30))
assertSeenOffsetsEqualCommittedOffsets(recordHandler.seenOffsets);
});
- assertThatExceptionOfType(IllegalStateException.class)
- .isThrownBy(() -> endlessConsumer.exitStatus())
- .describedAs("Consumer should still be running");
+ assertThat(endlessConsumer.running())
+ .describedAs("Consumer should still be running")
+ .isTrue();
endlessConsumer.stop();
recordGenerator.assertBusinessLogic();
@SkipWhenErrorCannotBeGenerated(poisonPill = true)
void commitsOffsetOfErrorForReprocessingOnDeserializationError()
{
- int numberOfGeneratedMessages =
- recordGenerator.generate(true, false, messageSender);
+ recordGenerator.generate(true, false, messageSender);
- await("Consumer failed")
+ int numberOfValidMessages =
+ recordGenerator.getNumberOfMessages() -
+ recordGenerator.getNumberOfPoisonPills();
+
+ await(numberOfValidMessages + " records received")
.atMost(Duration.ofSeconds(30))
.pollInterval(Duration.ofSeconds(1))
- .until(() -> !endlessConsumer.running());
-
- checkSeenOffsetsForProgress();
- assertSeenOffsetsEqualCommittedOffsets(recordHandler.seenOffsets);
-
- endlessConsumer.start();
- await("Consumer failed")
+ .until(() -> recordHandler.receivedMessages >= numberOfValidMessages);
+ await(recordGenerator.getNumberOfPoisonPills() + " poison-pills received")
.atMost(Duration.ofSeconds(30))
.pollInterval(Duration.ofSeconds(1))
- .until(() -> !endlessConsumer.running());
+ .until(() -> deadLetterTopicConsumer.messages.size() == recordGenerator.getNumberOfPoisonPills());
- checkSeenOffsetsForProgress();
- assertSeenOffsetsEqualCommittedOffsets(recordHandler.seenOffsets);
- assertThat(recordHandler.receivedMessages)
- .describedAs("Received not all sent events")
- .isLessThan(numberOfGeneratedMessages);
+ await("Offsets committed")
+ .atMost(Duration.ofSeconds(10))
+ .pollInterval(Duration.ofSeconds(1))
+ .untilAsserted(() ->
+ {
+ checkSeenOffsetsForProgress();
+ assertSeenOffsetsEqualCommittedOffsets(recordHandler.seenOffsets);
+ });
- assertThatNoException()
- .describedAs("Consumer should not be running")
- .isThrownBy(() -> endlessConsumer.exitStatus());
- assertThat(endlessConsumer.exitStatus())
- .describedAs("Consumer should have exited abnormally")
- .containsInstanceOf(RecordDeserializationException.class);
+ assertThat(endlessConsumer.running())
+ .describedAs("Consumer should still be running")
+ .isTrue();
+ endlessConsumer.stop();
recordGenerator.assertBusinessLogic();
}
@SkipWhenErrorCannotBeGenerated(logicError = true)
void commitsOffsetsOfUnseenRecordsOnLogicError()
{
- int numberOfGeneratedMessages =
- recordGenerator.generate(false, true, messageSender);
+ recordGenerator.generate(false, true, messageSender);
+
+ int numberOfValidMessages =
+ recordGenerator.getNumberOfMessages() -
+ recordGenerator.getNumberOfLogicErrors();
- await("Consumer failed")
+ await(numberOfValidMessages + " records received")
.atMost(Duration.ofSeconds(30))
.pollInterval(Duration.ofSeconds(1))
- .until(() -> !endlessConsumer.running());
-
- checkSeenOffsetsForProgress();
- assertSeenOffsetsEqualCommittedOffsets(recordHandler.seenOffsets);
-
- endlessConsumer.start();
- await("Consumer failed")
+ .until(() -> recordHandler.receivedMessages >= numberOfValidMessages);
+ await(recordGenerator.getNumberOfLogicErrors() + " logic-errors received")
.atMost(Duration.ofSeconds(30))
.pollInterval(Duration.ofSeconds(1))
- .until(() -> !endlessConsumer.running());
+ .until(() -> deadLetterTopicConsumer.messages.size() == recordGenerator.getNumberOfLogicErrors());
- assertSeenOffsetsEqualCommittedOffsets(recordHandler.seenOffsets);
+ await("Offsets committed")
+ .atMost(Duration.ofSeconds(10))
+ .pollInterval(Duration.ofSeconds(1))
+ .untilAsserted(() ->
+ {
+ checkSeenOffsetsForProgress();
+ assertSeenOffsetsEqualCommittedOffsets(recordHandler.seenOffsets);
+ });
- assertThatNoException()
- .describedAs("Consumer should not be running")
- .isThrownBy(() -> endlessConsumer.exitStatus());
- assertThat(endlessConsumer.exitStatus())
- .describedAs("Consumer should have exited abnormally")
- .containsInstanceOf(RuntimeException.class);
+ assertThat(endlessConsumer.running())
+ .describedAs("Consumer should still be running")
+ .isTrue();
+ endlessConsumer.stop();
recordGenerator.assertBusinessLogic();
}
public interface RecordGenerator
{
- int generate(
+ void generate(
boolean poisonPills,
boolean logicErrors,
Consumer<ProducerRecord<Bytes, Bytes>> messageSender);
+ int getNumberOfMessages();
+ int getNumberOfPoisonPills();
+ int getNumberOfLogicErrors();
+
default boolean canGeneratePoisonPill()
{
return true;
recordHandler.seenOffsets = new HashMap<>();
recordHandler.receivedMessages = 0;
+ deadLetterTopicConsumer.messages.clear();
+
doForCurrentOffsets((tp, offset) ->
{
oldOffsets.put(tp, offset - 1);
return new TestRecordHandler(applicationRecordHandler);
}
- @Bean(destroyMethod = "close")
- public org.apache.kafka.clients.consumer.Consumer<String, Message> kafkaConsumer(ConsumerFactory<String, Message> factory)
+ @Bean(destroyMethod = "close")
+ public org.apache.kafka.clients.consumer.Consumer<String, Message> kafkaConsumer(ConsumerFactory<String, Message> factory)
+ {
+ return factory.createConsumer();
+ }
+
+ @Bean
+ public ConcurrentKafkaListenerContainerFactory<String, String> dltContainerFactory(
+ KafkaProperties properties)
{
- return factory.createConsumer();
+ Map<String, Object> consumerProperties = new HashMap<>();
+
+ consumerProperties.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, properties.getBootstrapServers());
+ consumerProperties.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
+ consumerProperties.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
+ consumerProperties.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
+
+ DefaultKafkaConsumerFactory dltConsumerFactory =
+ new DefaultKafkaConsumerFactory<>(consumerProperties);
+ ConcurrentKafkaListenerContainerFactory<String, String> factory =
+ new ConcurrentKafkaListenerContainerFactory<>();
+ factory.setConsumerFactory(dltConsumerFactory);
+ return factory;
}
+
+ @Bean
+ public DeadLetterTopicConsumer deadLetterTopicConsumer()
+ {
+ return new DeadLetterTopicConsumer();
+ }
}
}
projects / demos / kafka / training / blobdiff