X-Git-Url: http://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationTests.java;h=9169de009412bbac0c945ff6d552a4aa339393ab;hb=a8aed63e92d58731176dde8b7cec4f5a022ac813;hp=994d6572c73744cc5e6bbf3b003aa21d0f5f81c6;hpb=fb966920f18413076a28876ffcd125c84f9a6f06;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 994d657..9169de0 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; @@ -17,23 +15,24 @@ 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; 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 +78,27 @@ 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))); + send100Messages((partition, key, counter) -> + { + Bytes value; + String type; - Set> received = new HashSet<>(); - testHandler = record -> received.add(record); + 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)) - .until(() -> received.size() >= 100); + .until(() -> receivedRecords.size() >= 100); await("Offsets committed") .atMost(Duration.ofSeconds(10)) @@ -93,23 +107,66 @@ class ApplicationTests checkSeenOffsetsForProgress(); compareToCommitedOffsets(newOffsets); }); + + assertThatExceptionOfType(IllegalStateException.class) + .isThrownBy(() -> endlessConsumer.exitStatus()) + .describedAs("Consumer should still be running"); } @Test @Order(2) void commitsOffsetOfErrorForReprocessingOnError() { - send100Messages(counter -> - counter == 77 - ? new Bytes(stringSerializer.serialize(TOPIC, "BOOM!")) - : new Bytes(longSerializer.serialize(TOPIC, counter))); + send100Messages((partition, key, counter) -> + { + 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)) + .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); } @@ -121,7 +178,9 @@ 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); }); } @@ -139,7 +198,9 @@ 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(); } @@ -162,7 +223,12 @@ 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; @@ -170,14 +236,8 @@ 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) -> { @@ -203,6 +263,31 @@ 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() @@ -211,6 +296,7 @@ class ApplicationTests oldOffsets = new HashMap<>(); newOffsets = new HashMap<>(); + receivedRecords = new HashSet<>(); doForCurrentOffsets((tp, offset) -> { @@ -218,12 +304,13 @@ 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); }; @@ -256,6 +343,12 @@ class ApplicationTests @Import(ApplicationConfiguration.class) public static class Configuration { + @Bean + Serializer serializer() + { + return new JsonSerializer<>(); + } + @Bean KafkaProducer kafkaProducer(ApplicationProperties properties) {