X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationTests.java;h=f4c21041bf7c8febdb1b14abc77efc96c1be139b;hb=818c1eb862247e25abf9f7d91d5a73e3e3789a39;hp=caa25c54313ae2fd4b01e4820bcf135c62d57c5d;hpb=83a4bf324f5a7ec6010a7921118ec7d6e8f997cf;p=demos%2Fkafka%2Ftraining

diff --git a/src/test/java/de/juplo/kafka/ApplicationTests.java b/src/test/java/de/juplo/kafka/ApplicationTests.java
index caa25c5..f4c2104 100644
--- a/src/test/java/de/juplo/kafka/ApplicationTests.java
+++ b/src/test/java/de/juplo/kafka/ApplicationTests.java
@@ -6,7 +6,6 @@ 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.*;
@@ -21,12 +20,12 @@ import org.springframework.kafka.test.context.EmbeddedKafka;
 import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 
+import java.time.Clock;
 import java.time.Duration;
 import java.util.*;
 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;
@@ -43,6 +42,7 @@ import static org.awaitility.Awaitility.*;
 		properties = {
 				"consumer.bootstrap-server=${spring.embedded.kafka.brokers}",
 				"consumer.topic=" + TOPIC,
+				"consumer.commit-interval=1s",
 				"spring.mongodb.embedded.version=4.4.13" })
 @EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS)
 @EnableAutoConfiguration
@@ -61,27 +61,29 @@ class ApplicationTests
 	@Autowired
 	KafkaProducer<String, Bytes> kafkaProducer;
 	@Autowired
-	KafkaConsumer<String, Long> kafkaConsumer;
+	KafkaConsumer<String, String> kafkaConsumer;
 	@Autowired
-	KafkaConsumer<Bytes, Bytes> offsetConsumer;
+	PartitionStatisticsRepository partitionStatisticsRepository;
 	@Autowired
 	ApplicationProperties properties;
 	@Autowired
 	ExecutorService executor;
 	@Autowired
 	PartitionStatisticsRepository repository;
+	@Autowired
+	WordcountRebalanceListener wordcountRebalanceListener;
+	@Autowired
+	WordcountRecordHandler wordcountRecordHandler;
 
-	Consumer<ConsumerRecord<String, Long>> testHandler;
-	EndlessConsumer<String, Long> endlessConsumer;
+	EndlessConsumer<String, String> endlessConsumer;
 	Map<TopicPartition, Long> oldOffsets;
 	Map<TopicPartition, Long> newOffsets;
-	Set<ConsumerRecord<String, Long>> receivedRecords;
+	Set<ConsumerRecord<String, String>> receivedRecords;
 
 
 	/** Tests methods */
 
 	@Test
-	@Order(1) // << The poistion pill is not skipped. Hence, this test must run first
 	void commitsCurrentOffsetsOnSuccess() throws ExecutionException, InterruptedException
 	{
 		send100Messages(i ->  new Bytes(valueSerializer.serialize(TOPIC, i)));
@@ -103,41 +105,6 @@ class ApplicationTests
 				.describedAs("Consumer should still be running");
 	}
 
-	@Test
-	@Order(2)
-	void commitsOffsetOfErrorForReprocessingOnError()
-	{
-		send100Messages(counter ->
-				counter == 77
-						? new Bytes(stringSerializer.serialize(TOPIC, "BOOM!"))
-						: new Bytes(valueSerializer.serialize(TOPIC, counter)));
-
-		await("Consumer failed")
-				.atMost(Duration.ofSeconds(30))
-				.until(() -> !endlessConsumer.running());
-
-		checkSeenOffsetsForProgress();
-		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);
-	}
-
 
 	/** Helper methods for the verification of expectations */
 
@@ -177,9 +144,12 @@ class ApplicationTests
 
 	void doForCurrentOffsets(BiConsumer<TopicPartition, Long> consumer)
 	{
-		offsetConsumer.assign(partitions());
-		partitions().forEach(tp -> consumer.accept(tp, offsetConsumer.position(tp)));
-		offsetConsumer.unsubscribe();
+		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));
+		});
 	}
 
 	List<TopicPartition> partitions()
@@ -237,8 +207,6 @@ class ApplicationTests
 	@BeforeEach
 	public void init()
 	{
-		testHandler = record -> {} ;
-
 		oldOffsets = new HashMap<>();
 		newOffsets = new HashMap<>();
 		receivedRecords = new HashSet<>();
@@ -249,23 +217,25 @@ class ApplicationTests
 			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, String> captureOffsetAndExecuteTestHandler =
+				new TestRecordHandler<String, String>(wordcountRecordHandler) {
+					@Override
+					public void onNewRecord(ConsumerRecord<String, String> record)
+					{
+						newOffsets.put(
+								new TopicPartition(record.topic(), record.partition()),
+								record.offset());
+						receivedRecords.add(record);
+					}
 				};
 
 		endlessConsumer =
 				new EndlessConsumer<>(
 						executor,
-						repository,
 						properties.getClientId(),
 						properties.getTopic(),
 						kafkaConsumer,
+						wordcountRebalanceListener,
 						captureOffsetAndExecuteTestHandler);
 
 		endlessConsumer.start();
@@ -306,18 +276,5 @@ class ApplicationTests
 
 			return new KafkaProducer<>(props);
 		}
-
-		@Bean
-		KafkaConsumer<Bytes, Bytes> offsetConsumer(ApplicationProperties properties)
-		{
-			Properties props = new Properties();
-			props.put("bootstrap.servers", properties.getBootstrapServer());
-			props.put("client.id", "OFFSET-CONSUMER");
-			props.put("group.id", properties.getGroupId());
-			props.put("key.deserializer", BytesDeserializer.class.getName());
-			props.put("value.deserializer", BytesDeserializer.class.getName());
-
-			return new KafkaConsumer<>(props);
-		}
 	}
 }