X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationTests.java;h=24d3a9e0c07649282d3107c999cf49cffd94f029;hb=c032639acf2861b9039dc08e98bb7d9d1f59b086;hp=39ff0d7110cac758547928f8dc77e1fceec50e25;hpb=221f774959bb0d1e113bdeefd8fdc52ea1291081;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 39ff0d7..24d3a9e 100644 --- a/src/test/java/de/juplo/kafka/ApplicationTests.java +++ b/src/test/java/de/juplo/kafka/ApplicationTests.java @@ -15,17 +15,18 @@ import org.springframework.boot.test.context.ConfigDataApplicationContextInitial 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; 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; @@ -40,7 +41,8 @@ import static org.awaitility.Awaitility.*; @TestPropertySource( properties = { "consumer.bootstrap-server=${spring.embedded.kafka.brokers}", - "consumer.topic=" + TOPIC }) + "consumer.topic=" + TOPIC, + "consumer.commit-interval=1s" }) @EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS) @Slf4j class ApplicationTests @@ -56,7 +58,7 @@ class ApplicationTests @Autowired KafkaProducer kafkaProducer; @Autowired - KafkaConsumer kafkaConsumer; + KafkaConsumer kafkaConsumer; @Autowired KafkaConsumer offsetConsumer; @Autowired @@ -64,31 +66,44 @@ class ApplicationTests @Autowired ExecutorService executor; - Consumer> testHandler; - EndlessConsumer endlessConsumer; + Consumer> testHandler; + EndlessConsumer endlessConsumer; Map oldOffsets; Map newOffsets; - Set> receivedRecords; + Set> receivedRecords; /** Tests methods */ @Test - @Order(1) // << The poistion pill is not skipped. Hence, this test must run first void commitsCurrentOffsetsOnSuccess() throws ExecutionException, InterruptedException { 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, counter); + type = "greeting"; + } + + return toRecord(partition, key, value, type); }); 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(); @@ -101,19 +116,37 @@ class ApplicationTests } @Test - @Order(2) - void commitsOffsetOfErrorForReprocessingOnError() + void commitsOffsetOfErrorForReprocessingOnDeserializationError() { 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 = "foo"; + } + else + { + if (counter%3 != 0) + { + value = serializeClientMessage(key, counter); + type = "message"; + } + else { + value = serializeGreeting(key, counter); + type = "greeting"; + } + } + + return toRecord(partition, key, value, type); }); await("Consumer failed") .atMost(Duration.ofSeconds(30)) + .pollInterval(Duration.ofSeconds(1)) .until(() -> !endlessConsumer.running()); checkSeenOffsetsForProgress(); @@ -122,6 +155,7 @@ class ApplicationTests endlessConsumer.start(); await("Consumer failed") .atMost(Duration.ofSeconds(30)) + .pollInterval(Duration.ofSeconds(1)) .until(() -> !endlessConsumer.running()); checkSeenOffsetsForProgress(); @@ -159,8 +193,8 @@ 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); @@ -175,6 +209,21 @@ class ApplicationTests /** Helper methods for setting up and running the tests */ + void seekToEnd() + { + offsetConsumer.assign(partitions()); + offsetConsumer.seekToEnd(partitions()); + partitions().forEach(tp -> + { + // 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()); @@ -206,7 +255,7 @@ class ApplicationTests for (int key = 0; key < 10; key++) { ProducerRecord record = - recordGenerator.generate(partition, Integer.toString(key%2), ++i); + recordGenerator.generate(partition, Integer.toString(partition*10+key%2), ++i); kafkaProducer.send(record, (metadata, e) -> { @@ -232,12 +281,39 @@ class ApplicationTests } } + ProducerRecord toRecord(int partition, String key, Bytes value, String type) + { + ProducerRecord record = + new ProducerRecord<>(TOPIC, partition, key, value); + record.headers().add("__TypeId__", type.getBytes()); + return record; + } + + Bytes serializeClientMessage(String key, Long value) + { + TestClientMessage message = new TestClientMessage(key, value.toString()); + return new Bytes(valueSerializer.serialize(TOPIC, message)); + } + + Bytes serializeGreeting(String key, Long value) + { + TestGreeting message = new TestGreeting(key, LocalDateTime.now()); + return new Bytes(valueSerializer.serialize(TOPIC, message)); + } + + Bytes serializeFooMessage(String key, Long value) + { + TestFooMessage message = new TestFooMessage(key, value); + return new Bytes(valueSerializer.serialize(TOPIC, message)); + } @BeforeEach public void init() { testHandler = record -> {} ; + seekToEnd(); + oldOffsets = new HashMap<>(); newOffsets = new HashMap<>(); receivedRecords = new HashSet<>(); @@ -248,7 +324,7 @@ class ApplicationTests newOffsets.put(tp, offset - 1); }); - Consumer> captureOffsetAndExecuteTestHandler = + Consumer> captureOffsetAndExecuteTestHandler = record -> { newOffsets.put( @@ -288,9 +364,9 @@ class ApplicationTests public static class Configuration { @Bean - Serializer serializer() + Serializer serializer() { - return new LongSerializer(); + return new JsonSerializer<>(); } @Bean