import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Import;
+import org.springframework.kafka.support.serializer.JsonSerializer;
import org.springframework.kafka.test.context.EmbeddedKafka;
import org.springframework.test.context.TestPropertySource;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
import java.time.Duration;
+import java.time.LocalDateTime;
import java.util.*;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
@Autowired
KafkaProducer<String, Bytes> kafkaProducer;
@Autowired
- KafkaConsumer<String, Long> kafkaConsumer;
+ KafkaConsumer<String, ValidMessage> kafkaConsumer;
@Autowired
KafkaConsumer<Bytes, Bytes> offsetConsumer;
@Autowired
@Autowired
ExecutorService executor;
- Consumer<ConsumerRecord<String, Long>> testHandler;
- EndlessConsumer<String, Long> endlessConsumer;
+ Consumer<ConsumerRecord<String, ValidMessage>> testHandler;
+ EndlessConsumer<String, ValidMessage> endlessConsumer;
Map<TopicPartition, Long> oldOffsets;
Map<TopicPartition, Long> newOffsets;
- Set<ConsumerRecord<String, Long>> receivedRecords;
+ Set<ConsumerRecord<String, ValidMessage>> receivedRecords;
/** Tests methods */
@Test
- void commitsCurrentOffsetsOnSuccess() throws ExecutionException, InterruptedException
+ void commitsCurrentOffsetsOnSuccess()
{
send100Messages((partition, key, counter) ->
{
- Bytes value = new Bytes(valueSerializer.serialize(TOPIC, counter));
- return new ProducerRecord<>(TOPIC, partition, key, value);
+ Bytes value;
+ String type;
+
+ if (counter%3 != 0)
+ {
+ value = serializeClientMessage(key, counter);
+ type = "message";
+ }
+ else {
+ value = serializeGreeting(key);
+ type = "greeting";
+ }
+
+ return toRecord(partition, key, value, Optional.of(type));
});
await("100 records received")
}
@Test
- void commitsOffsetOfErrorForReprocessingOnDeserializationError()
+ void commitsOffsetOfErrorForReprocessingOnDeserializationErrorInvalidMessage()
{
send100Messages((partition, key, counter) ->
{
- Bytes value = counter == 77
- ? new Bytes(stringSerializer.serialize(TOPIC, "BOOM!"))
- : new Bytes(valueSerializer.serialize(TOPIC, counter));
- return new ProducerRecord<>(TOPIC, partition, key, value);
+ Bytes value;
+ String type;
+
+ if (counter == 77)
+ {
+ value = serializeFooMessage(key, counter);
+ type = null;
+ }
+ else
+ {
+ if (counter%3 != 0)
+ {
+ value = serializeClientMessage(key, counter);
+ type = "message";
+ }
+ else {
+ value = serializeGreeting(key);
+ type = "greeting";
+ }
+ }
+
+ return toRecord(partition, key, value, Optional.ofNullable(type));
+ });
+
+ await("Consumer failed")
+ .atMost(Duration.ofSeconds(30))
+ .pollInterval(Duration.ofSeconds(1))
+ .until(() -> !endlessConsumer.running());
+
+ checkSeenOffsetsForProgress();
+ compareToCommitedOffsets(newOffsets);
+
+ endlessConsumer.start();
+ await("Consumer failed")
+ .atMost(Duration.ofSeconds(30))
+ .pollInterval(Duration.ofSeconds(1))
+ .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);
+ }
+
+ @Test
+ void commitsOffsetOfErrorForReprocessingOnDeserializationErrorOnUnknownMessage()
+ {
+ send100Messages((partition, key, counter) ->
+ {
+ Bytes value;
+ String type;
+
+ if (counter == 77)
+ {
+ value = serializeFooMessage(key, counter);
+ type = "foo";
+ }
+ else
+ {
+ if (counter%3 != 0)
+ {
+ value = serializeClientMessage(key, counter);
+ type = "message";
+ }
+ else {
+ value = serializeGreeting(key);
+ type = "greeting";
+ }
+ }
+
+ return toRecord(partition, key, value, Optional.of(type));
});
await("Consumer failed")
public interface RecordGenerator<K, V>
{
- public ProducerRecord<String, Bytes> generate(int partition, String key, long counter);
+ public ProducerRecord<String, Bytes> generate(int partition, String key, int counter);
}
void send100Messages(RecordGenerator recordGenerator)
{
- long i = 0;
+ int i = 0;
for (int partition = 0; partition < 10; partition++)
{
}
}
+ ProducerRecord<String, Bytes> toRecord(int partition, String key, Bytes value, Optional<String> type)
+ {
+ ProducerRecord<String, Bytes> record =
+ new ProducerRecord<>(TOPIC, partition, key, value);
+
+ type.ifPresent(typeId -> record.headers().add("__TypeId__", typeId.getBytes()));
+ return record;
+ }
+
+ Bytes serializeClientMessage(String key, int value)
+ {
+ TestClientMessage message = new TestClientMessage(key, Integer.toString(value));
+ return new Bytes(valueSerializer.serialize(TOPIC, message));
+ }
+
+ Bytes serializeGreeting(String key)
+ {
+ TestGreeting message = new TestGreeting(key, LocalDateTime.now());
+ return new Bytes(valueSerializer.serialize(TOPIC, message));
+ }
+
+ Bytes serializeFooMessage(String key, int value)
+ {
+ TestFooMessage message = new TestFooMessage(key, (long)value);
+ return new Bytes(valueSerializer.serialize(TOPIC, message));
+ }
@BeforeEach
public void init()
newOffsets.put(tp, offset - 1);
});
- Consumer<ConsumerRecord<String, Long>> captureOffsetAndExecuteTestHandler =
+ Consumer<ConsumerRecord<String, ValidMessage>> captureOffsetAndExecuteTestHandler =
record ->
{
newOffsets.put(
public static class Configuration
{
@Bean
- Serializer<Long> serializer()
+ Serializer<ValidMessage> serializer()
{
- return new LongSerializer();
+ return new JsonSerializer<>();
}
@Bean
projects / demos / kafka / training / blobdiff