X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationTests.java;h=6c25bcd7808409744fc28b7e742c14d37c23efac;hb=d2f482e5eb951e725f4193f97d979330e91c930e;hp=6f58180f03c4a6a0a4741af5e43ba2c5e6155ca5;hpb=4a6907ee4675c3d9bc7fd4ba31a7048527f53a50;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 6f58180..6c25bcd 100644 --- a/src/test/java/de/juplo/kafka/ApplicationTests.java +++ b/src/test/java/de/juplo/kafka/ApplicationTests.java @@ -6,10 +6,8 @@ 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.serialization.BytesDeserializer; -import org.apache.kafka.common.serialization.BytesSerializer; -import org.apache.kafka.common.serialization.LongSerializer; -import org.apache.kafka.common.serialization.StringSerializer; +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.*; import org.springframework.beans.factory.annotation.Autowired; @@ -17,6 +15,7 @@ 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; @@ -26,14 +25,14 @@ import java.util.*; import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutorService; import java.util.function.BiConsumer; +import java.util.function.BiFunction; import java.util.function.Consumer; -import java.util.function.Function; import java.util.stream.Collectors; import java.util.stream.IntStream; import static de.juplo.kafka.ApplicationTests.PARTITIONS; import static de.juplo.kafka.ApplicationTests.TOPIC; -import static org.assertj.core.api.Assertions.assertThat; +import static org.assertj.core.api.Assertions.*; import static org.awaitility.Awaitility.*; @@ -52,12 +51,13 @@ class ApplicationTests StringSerializer stringSerializer = new StringSerializer(); - LongSerializer longSerializer = new LongSerializer(); + @Autowired + Serializer valueSerializer; @Autowired KafkaProducer kafkaProducer; @Autowired - KafkaConsumer kafkaConsumer; + KafkaConsumer kafkaConsumer; @Autowired KafkaConsumer offsetConsumer; @Autowired @@ -65,10 +65,11 @@ class ApplicationTests @Autowired ExecutorService executor; - Consumer> testHandler; - EndlessConsumer endlessConsumer; + Consumer> testHandler; + EndlessConsumer endlessConsumer; Map oldOffsets; Map newOffsets; + Set> receivedRecords; /** Tests methods */ @@ -77,14 +78,11 @@ class ApplicationTests @Order(1) // << The poistion pill is not skipped. Hence, this test must run first void commitsCurrentOffsetsOnSuccess() throws ExecutionException, InterruptedException { - send100Messages(i -> new Bytes(longSerializer.serialize(TOPIC, i))); - - Set> received = new HashSet<>(); - testHandler = record -> received.add(record); + send100Messages((key, counter) -> serialize(key, counter)); await("100 records received") .atMost(Duration.ofSeconds(30)) - .until(() -> received.size() >= 100); + .until(() -> receivedRecords.size() >= 100); await("Offsets committed") .atMost(Duration.ofSeconds(10)) @@ -93,16 +91,20 @@ class ApplicationTests checkSeenOffsetsForProgress(); compareToCommitedOffsets(newOffsets); }); + + assertThatExceptionOfType(IllegalStateException.class) + .isThrownBy(() -> endlessConsumer.exitStatus()) + .describedAs("Consumer should still be running"); } @Test @Order(2) void commitsOffsetOfErrorForReprocessingOnError() { - send100Messages(counter -> + send100Messages((key, counter) -> counter == 77 ? new Bytes(stringSerializer.serialize(TOPIC, "BOOM!")) - : new Bytes(longSerializer.serialize(TOPIC, counter))); + : serialize(key, counter)); await("Consumer failed") .atMost(Duration.ofSeconds(30)) @@ -118,6 +120,16 @@ class ApplicationTests 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); } @@ -129,7 +141,9 @@ class ApplicationTests { Long expected = offsetsToCheck.get(tp) + 1; log.debug("Checking, if the offset for {} is {}", tp, expected); - assertThat(offset).isEqualTo(expected); + assertThat(offset) + .describedAs("Committed offset corresponds to the offset of the consumer") + .isEqualTo(expected); }); } @@ -147,7 +161,9 @@ class ApplicationTests withProgress.add(tp); } }); - assertThat(withProgress).isNotEmpty().describedAs("Found no partitions with any offset-progress"); + assertThat(withProgress) + .describedAs("Some offsets must have changed, compared to the old offset-positions") + .isNotEmpty(); } @@ -170,7 +186,7 @@ class ApplicationTests } - void send100Messages(Function messageGenerator) + void send100Messages(BiFunction messageGenerator) { long i = 0; @@ -178,7 +194,7 @@ class ApplicationTests { for (int key = 0; key < 10; key++) { - Bytes value = messageGenerator.apply(++i); + Bytes value = messageGenerator.apply(key, ++i); ProducerRecord record = new ProducerRecord<>( @@ -187,6 +203,7 @@ class ApplicationTests Integer.toString(key%2), value); + record.headers().add("__TypeId__", "message".getBytes()); kafkaProducer.send(record, (metadata, e) -> { if (metadata != null) @@ -211,6 +228,14 @@ class ApplicationTests } } + Bytes serialize(Integer key, Long value) + { + ClientMessage message = new ClientMessage(); + message.setClient(key.toString()); + message.setMessage(value.toString()); + return new Bytes(valueSerializer.serialize(TOPIC, message)); + } + @BeforeEach public void init() @@ -219,6 +244,7 @@ class ApplicationTests oldOffsets = new HashMap<>(); newOffsets = new HashMap<>(); + receivedRecords = new HashSet<>(); doForCurrentOffsets((tp, offset) -> { @@ -226,12 +252,13 @@ class ApplicationTests newOffsets.put(tp, offset - 1); }); - Consumer> captureOffsetAndExecuteTestHandler = + Consumer> captureOffsetAndExecuteTestHandler = record -> { newOffsets.put( new TopicPartition(record.topic(), record.partition()), record.offset()); + receivedRecords.add(record); testHandler.accept(record); }; @@ -264,6 +291,12 @@ class ApplicationTests @Import(ApplicationConfiguration.class) public static class Configuration { + @Bean + Serializer serializer() + { + return new JsonSerializer<>(); + } + @Bean KafkaProducer kafkaProducer(ApplicationProperties properties) {