From: Kai Moritz Date: Sun, 14 Aug 2022 11:26:08 +0000 (+0200) Subject: Namen der Test-Klassen korrigiert X-Git-Tag: sumup-adder---lvm-2-tage~9^2~5 X-Git-Url: http://juplo.de/gitweb/?a=commitdiff_plain;h=c6a33a3c27563018d99a56fe4069f20de64e9f4c;p=demos%2Fkafka%2Ftraining Namen der Test-Klassen korrigiert --- diff --git a/src/test/java/de/juplo/kafka/ApplicationTest.java b/src/test/java/de/juplo/kafka/ApplicationTest.java deleted file mode 100644 index ed93a21..0000000 --- a/src/test/java/de/juplo/kafka/ApplicationTest.java +++ /dev/null @@ -1,84 +0,0 @@ -package de.juplo.kafka; - -import org.apache.kafka.clients.consumer.ConsumerRecord; -import org.apache.kafka.clients.producer.ProducerRecord; -import org.apache.kafka.common.serialization.LongSerializer; -import org.apache.kafka.common.serialization.StringSerializer; -import org.apache.kafka.common.utils.Bytes; -import org.springframework.boot.test.context.TestConfiguration; -import org.springframework.context.annotation.Bean; -import org.springframework.context.annotation.Primary; -import org.springframework.test.context.ContextConfiguration; - -import java.util.Set; -import java.util.function.Consumer; - - -@ContextConfiguration(classes = ApplicationTest.Configuration.class) -public class ApplicationTest extends GenericApplicationTest -{ - public ApplicationTest() - { - super( - new RecordGenerator() - { - final StringSerializer stringSerializer = new StringSerializer(); - final LongSerializer longSerializer = new LongSerializer(); - - - @Override - public void generate( - int numberOfMessagesToGenerate, - Set poisonPills, - Set logicErrors, - Consumer> messageSender) - { - int i = 0; - - for (int partition = 0; partition < 10; partition++) - { - for (int key = 0; key < 10; key++) - { - if (++i > numberOfMessagesToGenerate) - return; - - Bytes value = new Bytes(longSerializer.serialize(TOPIC, (long)i)); - if (logicErrors.contains(i)) - { - value = new Bytes(longSerializer.serialize(TOPIC, Long.MIN_VALUE)); - } - if (poisonPills.contains(i)) - { - value = new Bytes(stringSerializer.serialize(TOPIC, "BOOM (Poison-Pill)!")); - } - - ProducerRecord record = - new ProducerRecord<>( - TOPIC, - partition, - new Bytes(stringSerializer.serialize(TOPIC,Integer.toString(partition*10+key%2))), - value); - - messageSender.accept(record); - } - } - } - }); - } - - - @TestConfiguration - public static class Configuration - { - @Primary - @Bean - public Consumer> consumer() - { - return (record) -> - { - if (record.value() == Long.MIN_VALUE) - throw new RuntimeException("BOOM (Logic-Error)!"); - }; - } - } -} diff --git a/src/test/java/de/juplo/kafka/ApplicationTests.java b/src/test/java/de/juplo/kafka/ApplicationTests.java new file mode 100644 index 0000000..51d579e --- /dev/null +++ b/src/test/java/de/juplo/kafka/ApplicationTests.java @@ -0,0 +1,84 @@ +package de.juplo.kafka; + +import org.apache.kafka.clients.consumer.ConsumerRecord; +import org.apache.kafka.clients.producer.ProducerRecord; +import org.apache.kafka.common.serialization.LongSerializer; +import org.apache.kafka.common.serialization.StringSerializer; +import org.apache.kafka.common.utils.Bytes; +import org.springframework.boot.test.context.TestConfiguration; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Primary; +import org.springframework.test.context.ContextConfiguration; + +import java.util.Set; +import java.util.function.Consumer; + + +@ContextConfiguration(classes = ApplicationTests.Configuration.class) +public class ApplicationTests extends GenericApplicationTests +{ + public ApplicationTests() + { + super( + new RecordGenerator() + { + final StringSerializer stringSerializer = new StringSerializer(); + final LongSerializer longSerializer = new LongSerializer(); + + + @Override + public void generate( + int numberOfMessagesToGenerate, + Set poisonPills, + Set logicErrors, + Consumer> messageSender) + { + int i = 0; + + for (int partition = 0; partition < 10; partition++) + { + for (int key = 0; key < 10; key++) + { + if (++i > numberOfMessagesToGenerate) + return; + + Bytes value = new Bytes(longSerializer.serialize(TOPIC, (long)i)); + if (logicErrors.contains(i)) + { + value = new Bytes(longSerializer.serialize(TOPIC, Long.MIN_VALUE)); + } + if (poisonPills.contains(i)) + { + value = new Bytes(stringSerializer.serialize(TOPIC, "BOOM (Poison-Pill)!")); + } + + ProducerRecord record = + new ProducerRecord<>( + TOPIC, + partition, + new Bytes(stringSerializer.serialize(TOPIC,Integer.toString(partition*10+key%2))), + value); + + messageSender.accept(record); + } + } + } + }); + } + + + @TestConfiguration + public static class Configuration + { + @Primary + @Bean + public Consumer> consumer() + { + return (record) -> + { + if (record.value() == Long.MIN_VALUE) + throw new RuntimeException("BOOM (Logic-Error)!"); + }; + } + } +} diff --git a/src/test/java/de/juplo/kafka/ErrorCannotBeGeneratedCondition.java b/src/test/java/de/juplo/kafka/ErrorCannotBeGeneratedCondition.java index 6d772ce..99af3b2 100644 --- a/src/test/java/de/juplo/kafka/ErrorCannotBeGeneratedCondition.java +++ b/src/test/java/de/juplo/kafka/ErrorCannotBeGeneratedCondition.java @@ -27,7 +27,7 @@ public class ErrorCannotBeGeneratedCondition implements ExecutionCondition if (optional.isPresent()) { SkipWhenErrorCannotBeGenerated skipWhenErrorCannotBeGenerated = optional.get(); - GenericApplicationTest instance = (GenericApplicationTest)context.getTestInstance().get(); + GenericApplicationTests instance = (GenericApplicationTests)context.getTestInstance().get(); List missingRequiredErrors = new LinkedList<>(); if (skipWhenErrorCannotBeGenerated.poisonPill() && !instance.recordGenerator.canGeneratePoisionPill()) diff --git a/src/test/java/de/juplo/kafka/GenericApplicationTest.java b/src/test/java/de/juplo/kafka/GenericApplicationTest.java deleted file mode 100644 index 8a57a96..0000000 --- a/src/test/java/de/juplo/kafka/GenericApplicationTest.java +++ /dev/null @@ -1,356 +0,0 @@ -package de.juplo.kafka; - -import lombok.extern.slf4j.Slf4j; -import org.apache.kafka.clients.consumer.ConsumerRecord; -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.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; -import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer; -import org.springframework.boot.test.context.TestConfiguration; -import org.springframework.context.annotation.Import; -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.util.*; -import java.util.concurrent.ExecutorService; -import java.util.function.BiConsumer; -import java.util.function.Consumer; -import java.util.stream.Collectors; -import java.util.stream.IntStream; - -import static de.juplo.kafka.GenericApplicationTest.PARTITIONS; -import static de.juplo.kafka.GenericApplicationTest.TOPIC; -import static org.assertj.core.api.Assertions.*; -import static org.awaitility.Awaitility.*; - - -@SpringJUnitConfig(initializers = ConfigDataApplicationContextInitializer.class) -@TestPropertySource( - properties = { - "consumer.bootstrap-server=${spring.embedded.kafka.brokers}", - "consumer.topic=" + TOPIC, - "consumer.commit-interval=1s" }) -@EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS) -@Slf4j -abstract class GenericApplicationTest -{ - public static final String TOPIC = "FOO"; - public static final int PARTITIONS = 10; - - - @Autowired - KafkaConsumer kafkaConsumer; - @Autowired - Consumer> consumer; - @Autowired - ApplicationProperties properties; - @Autowired - ExecutorService executor; - - KafkaProducer testRecordProducer; - KafkaConsumer offsetConsumer; - EndlessConsumer endlessConsumer; - Map oldOffsets; - Map newOffsets; - Set> receivedRecords; - - - final RecordGenerator recordGenerator; - final Consumer> messageSender; - - public GenericApplicationTest(RecordGenerator recordGenerator) - { - this.recordGenerator = recordGenerator; - this.messageSender = (record) -> sendMessage(record); - } - - - /** Tests methods */ - - @Test - void commitsCurrentOffsetsOnSuccess() - { - recordGenerator.generate(100, Set.of(), Set.of(), messageSender); - - 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(); - compareToCommitedOffsets(newOffsets); - }); - - assertThatExceptionOfType(IllegalStateException.class) - .isThrownBy(() -> endlessConsumer.exitStatus()) - .describedAs("Consumer should still be running"); - } - - @Test - @SkipWhenErrorCannotBeGenerated(poisonPill = true) - void commitsOffsetOfErrorForReprocessingOnDeserializationError() - { - recordGenerator.generate(100, Set.of(77), Set.of(), messageSender); - - await("Consumer failed") - .atMost(Duration.ofSeconds(30)) - .pollInterval(Duration.ofSeconds(1)) - .until(() -> !endlessConsumer.running()); - - checkSeenOffsetsForProgress(); - compareToCommitedOffsets(newOffsets); - - endlessConsumer.start(); - await("Consumer failed") - .atMost(Duration.ofSeconds(30)) - .pollInterval(Duration.ofSeconds(1)) - .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); - } - - @Test - @SkipWhenErrorCannotBeGenerated(logicError = true) - void doesNotCommitOffsetsOnLogicError() - { - recordGenerator.generate(100, Set.of(), Set.of(77), messageSender); - - await("Consumer failed") - .atMost(Duration.ofSeconds(30)) - .pollInterval(Duration.ofSeconds(1)) - .until(() -> !endlessConsumer.running()); - - checkSeenOffsetsForProgress(); - compareToCommitedOffsets(oldOffsets); - - endlessConsumer.start(); - await("Consumer failed") - .atMost(Duration.ofSeconds(30)) - .pollInterval(Duration.ofSeconds(1)) - .until(() -> !endlessConsumer.running()); - - checkSeenOffsetsForProgress(); - compareToCommitedOffsets(oldOffsets); - 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(RuntimeException.class); - } - - - /** Helper methods for the verification of expectations */ - - void compareToCommitedOffsets(Map offsetsToCheck) - { - doForCurrentOffsets((tp, offset) -> - { - Long expected = offsetsToCheck.get(tp) + 1; - log.debug("Checking, if the offset for {} is {}", tp, expected); - assertThat(offset) - .describedAs("Committed offset corresponds to the offset of the consumer") - .isEqualTo(expected); - }); - } - - void checkSeenOffsetsForProgress() - { - // Be sure, that some messages were consumed...! - Set withProgress = new HashSet<>(); - partitions().forEach(tp -> - { - Long oldOffset = oldOffsets.get(tp) + 1; - Long newOffset = newOffsets.get(tp) + 1; - if (!oldOffset.equals(newOffset)) - { - log.debug("Progress for {}: {} -> {}", tp, oldOffset, newOffset); - withProgress.add(tp); - } - }); - assertThat(withProgress) - .describedAs("Some offsets must have changed, compared to the old offset-positions") - .isNotEmpty(); - } - - - /** 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()); - partitions().forEach(tp -> consumer.accept(tp, offsetConsumer.position(tp))); - offsetConsumer.unsubscribe(); - } - - List partitions() - { - return - IntStream - .range(0, PARTITIONS) - .mapToObj(partition -> new TopicPartition(TOPIC, partition)) - .collect(Collectors.toList()); - } - - - public interface RecordGenerator - { - void generate( - int numberOfMessagesToGenerate, - Set poisonPills, - Set logicErrors, - Consumer> messageSender); - - default boolean canGeneratePoisionPill() - { - return true; - } - - default boolean canGenerateLogicError() - { - return true; - } - } - - void sendMessage(ProducerRecord record) - { - testRecordProducer.send(record, (metadata, e) -> - { - if (metadata != null) - { - log.debug( - "{}|{} - {}={}", - metadata.partition(), - metadata.offset(), - record.key(), - record.value()); - } - else - { - log.warn( - "Exception for {}={}: {}", - record.key(), - record.value(), - e.toString()); - } - }); - } - - - @BeforeEach - public void init() - { - Properties props; - props = new Properties(); - props.put("bootstrap.servers", properties.getBootstrapServer()); - props.put("linger.ms", 100); - props.put("key.serializer", BytesSerializer.class.getName()); - props.put("value.serializer", BytesSerializer.class.getName()); - testRecordProducer = new KafkaProducer<>(props); - - 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()); - offsetConsumer = new KafkaConsumer<>(props); - - seekToEnd(); - - oldOffsets = new HashMap<>(); - newOffsets = new HashMap<>(); - receivedRecords = new HashSet<>(); - - doForCurrentOffsets((tp, offset) -> - { - oldOffsets.put(tp, offset - 1); - newOffsets.put(tp, offset - 1); - }); - - Consumer> captureOffsetAndExecuteTestHandler = - record -> - { - newOffsets.put( - new TopicPartition(record.topic(), record.partition()), - record.offset()); - receivedRecords.add(record); - consumer.accept(record); - }; - - endlessConsumer = - new EndlessConsumer<>( - executor, - properties.getClientId(), - properties.getTopic(), - kafkaConsumer, - captureOffsetAndExecuteTestHandler); - - endlessConsumer.start(); - } - - @AfterEach - public void deinit() - { - try - { - endlessConsumer.stop(); - testRecordProducer.close(); - offsetConsumer.close(); - } - catch (Exception e) - { - log.info("Exception while stopping the consumer: {}", e.toString()); - } - } - - - @TestConfiguration - @Import(ApplicationConfiguration.class) - public static class Configuration - { - } -} diff --git a/src/test/java/de/juplo/kafka/GenericApplicationTests.java b/src/test/java/de/juplo/kafka/GenericApplicationTests.java new file mode 100644 index 0000000..8b9a3ff --- /dev/null +++ b/src/test/java/de/juplo/kafka/GenericApplicationTests.java @@ -0,0 +1,356 @@ +package de.juplo.kafka; + +import lombok.extern.slf4j.Slf4j; +import org.apache.kafka.clients.consumer.ConsumerRecord; +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.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; +import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer; +import org.springframework.boot.test.context.TestConfiguration; +import org.springframework.context.annotation.Import; +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.util.*; +import java.util.concurrent.ExecutorService; +import java.util.function.BiConsumer; +import java.util.function.Consumer; +import java.util.stream.Collectors; +import java.util.stream.IntStream; + +import static de.juplo.kafka.GenericApplicationTests.PARTITIONS; +import static de.juplo.kafka.GenericApplicationTests.TOPIC; +import static org.assertj.core.api.Assertions.*; +import static org.awaitility.Awaitility.*; + + +@SpringJUnitConfig(initializers = ConfigDataApplicationContextInitializer.class) +@TestPropertySource( + properties = { + "consumer.bootstrap-server=${spring.embedded.kafka.brokers}", + "consumer.topic=" + TOPIC, + "consumer.commit-interval=1s" }) +@EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS) +@Slf4j +abstract class GenericApplicationTests +{ + public static final String TOPIC = "FOO"; + public static final int PARTITIONS = 10; + + + @Autowired + KafkaConsumer kafkaConsumer; + @Autowired + Consumer> consumer; + @Autowired + ApplicationProperties properties; + @Autowired + ExecutorService executor; + + KafkaProducer testRecordProducer; + KafkaConsumer offsetConsumer; + EndlessConsumer endlessConsumer; + Map oldOffsets; + Map newOffsets; + Set> receivedRecords; + + + final RecordGenerator recordGenerator; + final Consumer> messageSender; + + public GenericApplicationTests(RecordGenerator recordGenerator) + { + this.recordGenerator = recordGenerator; + this.messageSender = (record) -> sendMessage(record); + } + + + /** Tests methods */ + + @Test + void commitsCurrentOffsetsOnSuccess() + { + recordGenerator.generate(100, Set.of(), Set.of(), messageSender); + + 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(); + compareToCommitedOffsets(newOffsets); + }); + + assertThatExceptionOfType(IllegalStateException.class) + .isThrownBy(() -> endlessConsumer.exitStatus()) + .describedAs("Consumer should still be running"); + } + + @Test + @SkipWhenErrorCannotBeGenerated(poisonPill = true) + void commitsOffsetOfErrorForReprocessingOnDeserializationError() + { + recordGenerator.generate(100, Set.of(77), Set.of(), messageSender); + + await("Consumer failed") + .atMost(Duration.ofSeconds(30)) + .pollInterval(Duration.ofSeconds(1)) + .until(() -> !endlessConsumer.running()); + + checkSeenOffsetsForProgress(); + compareToCommitedOffsets(newOffsets); + + endlessConsumer.start(); + await("Consumer failed") + .atMost(Duration.ofSeconds(30)) + .pollInterval(Duration.ofSeconds(1)) + .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); + } + + @Test + @SkipWhenErrorCannotBeGenerated(logicError = true) + void doesNotCommitOffsetsOnLogicError() + { + recordGenerator.generate(100, Set.of(), Set.of(77), messageSender); + + await("Consumer failed") + .atMost(Duration.ofSeconds(30)) + .pollInterval(Duration.ofSeconds(1)) + .until(() -> !endlessConsumer.running()); + + checkSeenOffsetsForProgress(); + compareToCommitedOffsets(oldOffsets); + + endlessConsumer.start(); + await("Consumer failed") + .atMost(Duration.ofSeconds(30)) + .pollInterval(Duration.ofSeconds(1)) + .until(() -> !endlessConsumer.running()); + + checkSeenOffsetsForProgress(); + compareToCommitedOffsets(oldOffsets); + 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(RuntimeException.class); + } + + + /** Helper methods for the verification of expectations */ + + void compareToCommitedOffsets(Map offsetsToCheck) + { + doForCurrentOffsets((tp, offset) -> + { + Long expected = offsetsToCheck.get(tp) + 1; + log.debug("Checking, if the offset for {} is {}", tp, expected); + assertThat(offset) + .describedAs("Committed offset corresponds to the offset of the consumer") + .isEqualTo(expected); + }); + } + + void checkSeenOffsetsForProgress() + { + // Be sure, that some messages were consumed...! + Set withProgress = new HashSet<>(); + partitions().forEach(tp -> + { + Long oldOffset = oldOffsets.get(tp) + 1; + Long newOffset = newOffsets.get(tp) + 1; + if (!oldOffset.equals(newOffset)) + { + log.debug("Progress for {}: {} -> {}", tp, oldOffset, newOffset); + withProgress.add(tp); + } + }); + assertThat(withProgress) + .describedAs("Some offsets must have changed, compared to the old offset-positions") + .isNotEmpty(); + } + + + /** 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()); + partitions().forEach(tp -> consumer.accept(tp, offsetConsumer.position(tp))); + offsetConsumer.unsubscribe(); + } + + List partitions() + { + return + IntStream + .range(0, PARTITIONS) + .mapToObj(partition -> new TopicPartition(TOPIC, partition)) + .collect(Collectors.toList()); + } + + + public interface RecordGenerator + { + void generate( + int numberOfMessagesToGenerate, + Set poisonPills, + Set logicErrors, + Consumer> messageSender); + + default boolean canGeneratePoisionPill() + { + return true; + } + + default boolean canGenerateLogicError() + { + return true; + } + } + + void sendMessage(ProducerRecord record) + { + testRecordProducer.send(record, (metadata, e) -> + { + if (metadata != null) + { + log.debug( + "{}|{} - {}={}", + metadata.partition(), + metadata.offset(), + record.key(), + record.value()); + } + else + { + log.warn( + "Exception for {}={}: {}", + record.key(), + record.value(), + e.toString()); + } + }); + } + + + @BeforeEach + public void init() + { + Properties props; + props = new Properties(); + props.put("bootstrap.servers", properties.getBootstrapServer()); + props.put("linger.ms", 100); + props.put("key.serializer", BytesSerializer.class.getName()); + props.put("value.serializer", BytesSerializer.class.getName()); + testRecordProducer = new KafkaProducer<>(props); + + 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()); + offsetConsumer = new KafkaConsumer<>(props); + + seekToEnd(); + + oldOffsets = new HashMap<>(); + newOffsets = new HashMap<>(); + receivedRecords = new HashSet<>(); + + doForCurrentOffsets((tp, offset) -> + { + oldOffsets.put(tp, offset - 1); + newOffsets.put(tp, offset - 1); + }); + + Consumer> captureOffsetAndExecuteTestHandler = + record -> + { + newOffsets.put( + new TopicPartition(record.topic(), record.partition()), + record.offset()); + receivedRecords.add(record); + consumer.accept(record); + }; + + endlessConsumer = + new EndlessConsumer<>( + executor, + properties.getClientId(), + properties.getTopic(), + kafkaConsumer, + captureOffsetAndExecuteTestHandler); + + endlessConsumer.start(); + } + + @AfterEach + public void deinit() + { + try + { + endlessConsumer.stop(); + testRecordProducer.close(); + offsetConsumer.close(); + } + catch (Exception e) + { + log.info("Exception while stopping the consumer: {}", e.toString()); + } + } + + + @TestConfiguration + @Import(ApplicationConfiguration.class) + public static class Configuration + { + } +}