Verbesserungen aus 'deserialization' nach 'stored-offsets' gemerged

[demos/kafka/training] / src / test / java / de / juplo / kafka / ApplicationTests.java

diff --git a/src/test/java/de/juplo/kafka/ApplicationTests.java b/src/test/java/de/juplo/kafka/ApplicationTests.java
index a632a89..fc5d4c9 100644 (file)
--- a/src/test/java/de/juplo/kafka/ApplicationTests.java
+++ b/src/test/java/de/juplo/kafka/ApplicationTests.java
@@ -26,7 +26,6 @@ import java.util.*;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.function.BiConsumer;
-import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
@@ -63,6 +62,8 @@ class ApplicationTests
        @Autowired
        KafkaConsumer<String, Long> kafkaConsumer;
        @Autowired
+       KafkaConsumer<Bytes, Bytes> offsetConsumer;
+       @Autowired
        PartitionStatisticsRepository partitionStatisticsRepository;
        @Autowired
        ApplicationProperties properties;
@@ -84,17 +85,22 @@ class ApplicationTests
        /** 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)));
+               send100Messages((partition, key, counter) ->
+               {
+                       Bytes value = new Bytes(valueSerializer.serialize(TOPIC, counter));
+                       return new ProducerRecord<>(TOPIC, partition, key, value);
+               });
 
                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();
@@ -107,16 +113,19 @@ class ApplicationTests
        }
 
        @Test
-       @Order(2)
-       void commitsOffsetOfErrorForReprocessingOnError()
+       void commitsOffsetOfErrorForReprocessingOnDeserializationError()
        {
-               send100Messages(counter ->
-                               counter == 77
-                                               ? new Bytes(stringSerializer.serialize(TOPIC, "BOOM!"))
-                                               : new Bytes(valueSerializer.serialize(TOPIC, counter)));
+               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);
+               });
 
                await("Consumer failed")
                                .atMost(Duration.ofSeconds(30))
+                               .pollInterval(Duration.ofSeconds(1))
                                .until(() -> !endlessConsumer.running());
 
                checkSeenOffsetsForProgress();
@@ -125,6 +134,7 @@ class ApplicationTests
                endlessConsumer.start();
                await("Consumer failed")
                                .atMost(Duration.ofSeconds(30))
+                               .pollInterval(Duration.ofSeconds(1))
                                .until(() -> !endlessConsumer.running());
 
                checkSeenOffsetsForProgress();
@@ -162,8 +172,8 @@ class ApplicationTests
                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);
@@ -178,6 +188,24 @@ class ApplicationTests
 
        /** Helper methods for setting up and running the tests */
 
+       void seekToEnd()
+       {
+               offsetConsumer.assign(partitions());
+               partitions().forEach(tp ->
+               {
+                       Long offset = offsetConsumer.position(tp);
+                       log.info("New position for {}: {}", tp, offset);
+                       Integer partition = tp.partition();
+                       StatisticsDocument document =
+                                       partitionStatisticsRepository
+                                                       .findById(partition.toString())
+                                                       .orElse(new StatisticsDocument(partition));
+                       document.offset = offset;
+                       partitionStatisticsRepository.save(document);
+               });
+               offsetConsumer.unsubscribe();
+       }
+
        void doForCurrentOffsets(BiConsumer<TopicPartition, Long> consumer)
        {
                partitions().forEach(tp ->
@@ -198,7 +226,12 @@ class ApplicationTests
        }
 
 
-       void send100Messages(Function<Long, Bytes> messageGenerator)
+       public interface RecordGenerator<K, V>
+       {
+               public ProducerRecord<String, Bytes> generate(int partition, String key, long counter);
+       }
+
+       void send100Messages(RecordGenerator recordGenerator)
        {
                long i = 0;
 
@@ -206,14 +239,8 @@ class ApplicationTests
                {
                        for (int key = 0; key < 10; key++)
                        {
-                               Bytes value = messageGenerator.apply(++i);
-
                                ProducerRecord<String, Bytes> record =
-                                               new ProducerRecord<>(
-                                                               TOPIC,
-                                                               partition,
-                                                               Integer.toString(key%2),
-                                                               value);
+                                               recordGenerator.generate(partition, Integer.toString(partition*10+key%2), ++i);
 
                                kafkaProducer.send(record, (metadata, e) ->
                                {
@@ -243,6 +270,8 @@ class ApplicationTests
        @BeforeEach
        public void init()
        {
+               seekToEnd();
+
                oldOffsets = new HashMap<>();
                newOffsets = new HashMap<>();
                receivedRecords = new HashSet<>();
@@ -312,5 +341,19 @@ 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("enable.auto.commit", false);
+                       props.put("auto.offset.reset", "latest");
+                       props.put("key.deserializer", BytesDeserializer.class.getName());
+                       props.put("value.deserializer", BytesDeserializer.class.getName());
+
+                       return new KafkaConsumer<>(props);
+               }
        }
 }