X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationTests.java;h=d7eb0398453a0229e15abacbc6d3c0903be842bd;hb=refs%2Fheads%2Frebalance-listener;hp=a632a89c41f936b88f1f23742e78183279138ef3;hpb=b3777fba0ae679d9e2c9d36626fa208a952f83e8;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 a632a89..d7eb039 100644 --- a/src/test/java/de/juplo/kafka/ApplicationTests.java +++ b/src/test/java/de/juplo/kafka/ApplicationTests.java @@ -12,7 +12,6 @@ import org.apache.kafka.common.utils.Bytes; import org.junit.jupiter.api.*; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.autoconfigure.EnableAutoConfiguration; -import org.springframework.boot.test.autoconfigure.data.mongo.AutoConfigureDataMongo; import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer; import org.springframework.boot.test.context.TestConfiguration; import org.springframework.context.annotation.Bean; @@ -26,7 +25,6 @@ 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; @@ -42,11 +40,9 @@ 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" }) + "consumer.commit-interval=1s" }) @EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS) @EnableAutoConfiguration -@AutoConfigureDataMongo @Slf4j class ApplicationTests { @@ -63,17 +59,15 @@ class ApplicationTests @Autowired KafkaConsumer kafkaConsumer; @Autowired - PartitionStatisticsRepository partitionStatisticsRepository; + KafkaConsumer offsetConsumer; @Autowired ApplicationProperties properties; @Autowired ExecutorService executor; @Autowired - PartitionStatisticsRepository repository; + ApplicationRebalanceListener rebalanceListener; @Autowired - KeyCountingRebalanceListener keyCountingRebalanceListener; - @Autowired - KeyCountingRecordHandler keyCountingRecordHandler; + ApplicationRecordHandler recordHandler; EndlessConsumer endlessConsumer; Map oldOffsets; @@ -84,17 +78,22 @@ 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 +106,19 @@ 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 +127,7 @@ class ApplicationTests endlessConsumer.start(); await("Consumer failed") .atMost(Duration.ofSeconds(30)) + .pollInterval(Duration.ofSeconds(1)) .until(() -> !endlessConsumer.running()); checkSeenOffsetsForProgress(); @@ -162,8 +165,8 @@ class ApplicationTests Set 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); @@ -178,15 +181,27 @@ class ApplicationTests /** Helper methods for setting up and running the tests */ - void doForCurrentOffsets(BiConsumer consumer) + void seekToEnd() { + offsetConsumer.assign(partitions()); + offsetConsumer.seekToEnd(partitions()); partitions().forEach(tp -> { - String partition = Integer.toString(tp.partition()); - Optional offset = partitionStatisticsRepository.findById(partition).map(document -> document.offset); - consumer.accept(tp, offset.orElse(0l)); + // seekToEnd() works lazily: it only takes effect on poll()/position() + Long offset = offsetConsumer.position(tp); + log.info("New position for {}: {}", tp, offset); }); - } + // The new positions must be commited! + offsetConsumer.commitSync(); + offsetConsumer.unsubscribe(); + } + + void doForCurrentOffsets(BiConsumer consumer) + { + offsetConsumer.assign(partitions()); + partitions().forEach(tp -> consumer.accept(tp, offsetConsumer.position(tp))); + offsetConsumer.unsubscribe(); + } List partitions() { @@ -198,7 +213,12 @@ class ApplicationTests } - void send100Messages(Function messageGenerator) + public interface RecordGenerator + { + public ProducerRecord generate(int partition, String key, long counter); + } + + void send100Messages(RecordGenerator recordGenerator) { long i = 0; @@ -206,14 +226,8 @@ class ApplicationTests { for (int key = 0; key < 10; key++) { - Bytes value = messageGenerator.apply(++i); - ProducerRecord 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 +257,8 @@ class ApplicationTests @BeforeEach public void init() { + seekToEnd(); + oldOffsets = new HashMap<>(); newOffsets = new HashMap<>(); receivedRecords = new HashSet<>(); @@ -254,7 +270,7 @@ class ApplicationTests }); TestRecordHandler captureOffsetAndExecuteTestHandler = - new TestRecordHandler(keyCountingRecordHandler) { + new TestRecordHandler(recordHandler) { @Override public void onNewRecord(ConsumerRecord record) { @@ -271,7 +287,7 @@ class ApplicationTests properties.getClientId(), properties.getTopic(), kafkaConsumer, - keyCountingRebalanceListener, + rebalanceListener, captureOffsetAndExecuteTestHandler); endlessConsumer.start(); @@ -312,5 +328,18 @@ class ApplicationTests return new KafkaProducer<>(props); } + + @Bean + KafkaConsumer 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); + } } }