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How to use KafkaContainerCluster class of com.example.kafkacluster package

Best Testcontainers-java code snippet using com.example.kafkacluster.KafkaContainerCluster

Source:KafkaContainerCluster.java

...16import java.util.stream.Stream;17import static java.util.concurrent.TimeUnit.SECONDS;18/**19 * Provides an easy way to launch a Kafka cluster with multiple brokers. Copied from20 * https://github.com/testcontainers/testcontainers-java/blob/master/examples/kafka-cluster/src/test/java/com/example/kafkacluster/KafkaContainerCluster.java21 * <p>22 * Since it was copied from the link above, we decided to not make any major changes to it and use it as is.23 */24public class KafkaContainerCluster implements Startable {25    private final int brokersNum;26    private final Network network;27    private final GenericContainer<?> zookeeper;28    private final Collection<KafkaContainer> brokers;29    /**30     * Default constructor for building a kafka cluster to be used for tests.31     *32     * @param confluentPlatformVersion version of the kafka image33     * @param brokersNum               number of brokers34     * @param internalTopicsRf         replication factor35     */36    public KafkaContainerCluster(String confluentPlatformVersion, int brokersNum, int internalTopicsRf) {37        if (brokersNum < 0) {38            throw new IllegalArgumentException("brokersNum '" + brokersNum + "' must be greater than 0");39        }40        if (internalTopicsRf < 0 || internalTopicsRf > brokersNum) {41            throw new IllegalArgumentException(42                    "internalTopicsRf '" + internalTopicsRf + "' must be less than brokersNum and greater than 0");43        }44        this.brokersNum = brokersNum;45        this.network = Network.newNetwork();46        this.zookeeper = new GenericContainer<>(DockerImageName.parse("confluentinc/cp-zookeeper")47                                                               .withTag(confluentPlatformVersion))48                .withNetwork(network)49                .withNetworkAliases("zookeeper")50                .withEnv("ZOOKEEPER_CLIENT_PORT", String.valueOf(KafkaContainer.ZOOKEEPER_PORT));...

Source:KafkaContainerClusterTest.java

...20import java.util.UUID;21import java.util.concurrent.TimeUnit;22import static org.assertj.core.api.Assertions.assertThat;23import static org.assertj.core.api.Assertions.tuple;24public class KafkaContainerClusterTest {25    @Test26    public void testKafkaContainerCluster() throws Exception {27        try (28            KafkaContainerCluster cluster = new KafkaContainerCluster("6.2.1", 3, 2)29        ) {30            cluster.start();31            String bootstrapServers = cluster.getBootstrapServers();32            assertThat(cluster.getBrokers()).hasSize(3);33            testKafkaFunctionality(bootstrapServers, 3, 2);34        }35    }36    protected void testKafkaFunctionality(String bootstrapServers, int partitions, int rf) throws Exception {37        try (38            AdminClient adminClient = AdminClient.create(ImmutableMap.of(39                AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers40            ));41            KafkaProducer<String, String> producer = new KafkaProducer<>(42                ImmutableMap.of(...

KafkaContainerCluster

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2import org.apache.kafka.clients.consumer.ConsumerRecord;3import org.apache.kafka.clients.consumer.ConsumerRecords;4import org.apache.kafka.clients.consumer.KafkaConsumer;5import org.apache.kafka.clients.producer.ProducerRecord;6import org.apache.kafka.common.serialization.StringDeserializer;7import org.apache.kafka.common.serialization.StringSerializer;8import org.junit.Test;9import java.util.Arrays;10import java.util.Properties;11import java.util.concurrent.TimeUnit;12public class KafkaContainerClusterTest {13    public void test() throws Exception {14        KafkaContainerCluster kafka = new KafkaContainerCluster(3, 1);15        kafka.start();16        Properties producerProperties = new Properties();17        producerProperties.put("bootstrap.servers", kafka.getBootstrapServers());18        producerProperties.put("key.serializer", StringSerializer.class.getName());19        producerProperties.put("value.serializer", StringSerializer.class.getName());20        Properties consumerProperties = new Properties();21        consumerProperties.put("bootstrap.servers", kafka.getBootstrapServers());22        consumerProperties.put("key.deserializer", StringDeserializer.class.getName());23        consumerProperties.put("value.deserializer", StringDeserializer.class.getName());24        consumerProperties.put("group.id", "test");25        consumerProperties.put("auto.offset.reset", "earliest");26        kafka.createTopic("test", 3, (short) 1);27        kafka.send(new ProducerRecord<>("test", "test", "test"));28        KafkaConsumer<String, String> consumer = new KafkaConsumer<>(consumerProperties);29        consumer.subscribe(Arrays.asList("test"));30        ConsumerRecords<String, String> records = consumer.poll(10000);31        for (ConsumerRecord<String, String> record : records) {32            System.out.println(record);33        }34        consumer.close();35        kafka.stop();36    }37}

KafkaContainerCluster

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2import org.apache.kafka.clients.producer.KafkaProducer;3import org.apache.kafka.clients.producer.ProducerRecord;4import org.apache.kafka.common.serialization.StringSerializer;5import java.util.Properties;6import java.util.concurrent.ExecutionException;7public class 1 {8    public static void main(String[] args) throws InterruptedException, ExecutionException {9        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(3, 2181, 9092);10        kafkaContainerCluster.start();11        Properties properties = new Properties();12        properties.put("bootstrap.servers", kafkaContainerCluster.getBootstrapServers());13        properties.put("key.serializer", StringSerializer.class);14        properties.put("value.serializer", StringSerializer.class);15        KafkaProducer<String, String> producer = new KafkaProducer<String, String>(properties);16        producer.send(new ProducerRecord<String, String>("test", "Hello World!")).get();17        kafkaContainerCluster.stop();18    }19}20import com.example.kafkacluster.KafkaContainerCluster;21import org.apache.kafka.clients.consumer.ConsumerRecord;22import org.apache.kafka.clients.consumer.ConsumerRecords;23import org.apache.kafka.clients.consumer.KafkaConsumer;24import org.apache.kafka.common.serialization.StringDeserializer;25import java.util.Arrays;26import java.util.Properties;27public class 2 {28    public static void main(String[] args) throws InterruptedException {29        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(3, 2181, 9092);30        kafkaContainerCluster.start();31        Properties properties = new Properties();32        properties.put("bootstrap.servers", kafkaContainerCluster.getBootstrapServers());33        properties.put("key.deserializer", StringDeserializer.class);34        properties.put("value.deserializer", StringDeserializer.class);35        properties.put("group.id", "test");36        KafkaConsumer<String, String> consumer = new KafkaConsumer<String, String>(properties);37        consumer.subscribe(Arrays.asList("test

KafkaContainerCluster

Using AI Code Generation

1package com.example.kafkacluster;2import java.io.IOException;3import java.util.Properties;4import org.apache.kafka.clients.consumer.ConsumerConfig;5import org.apache.kafka.clients.consumer.ConsumerRecord;6import org.apache.kafka.clients.consumer.ConsumerRecords;7import org.apache.kafka.clients.consumer.KafkaConsumer;8import org.apache.kafka.common.serialization.StringDeserializer;9import org.apache.kafka.common.serialization.StringSerializer;10public class Consumer {11	public static void main(String[] args) throws IOException {12		Properties props = new Properties();13		props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");14		props.put(ConsumerConfig.GROUP_ID_CONFIG, "test");15		props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());16		props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());17		KafkaConsumer<String, String> consumer = new KafkaConsumer<String, String>(props);18		consumer.subscribe(java.util.Collections.singletonList("test"));19		while (true) {20			ConsumerRecords<String, String> records = consumer.poll(100);21			for (ConsumerRecord<String, String> record : records)22				System.out.printf("offset = %d, key = %s, value = %s%n", record.offset(), record.key(), record.value());23		}24	}25}26package com.example.kafkacluster;27import java.io.IOException;28import org.apache.kafka.clients.producer.KafkaProducer;29import org.apache.kafka.clients.producer.ProducerConfig;30import org.apache.kafka.clients.producer.ProducerRecord;31import org.apache.kafka.common.serialization.StringSerializer;32public class Producer {33	public static void main(String[] args) throws IOException {34		KafkaProducer<String, String> producer = new KafkaProducer<String, String>(KafkaContainerCluster.getKafkaProducerProperties());35		for (int i = 0; i < 100; i++) {36			ProducerRecord<String, String> record = new ProducerRecord<String, String>("test", "test", "test");37			producer.send(record);38		}39		producer.close();40	}41}42package com.example.kafkacluster;43import java.io.IOException;44import org.apache.kafka.clients.consumer.Consumer

KafkaContainerCluster

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2import org.apache.kafka.clients.producer.ProducerRecord;3import org.apache.kafka.clients.producer.RecordMetadata;4import org.apache.kafka.common.serialization.StringSerializer;5import org.apache.kafka.common.serialization.StringDeserializer;6import org.apache.kafka.clients.consumer.ConsumerRecord;7import org.apache.kafka.clients.consumer.ConsumerRecords;8import org.apache.kafka.clients.consumer.KafkaConsumer;9import org.apache.kafka.clients.producer.KafkaProducer;10import org.apache.kafka.clients.producer.ProducerConfig;11import org.apache.kafka.common.serialization.StringDeserializer;12import org.apache.kafka.common.serialization.StringSerializer;13import java.util.Arrays;14import java.util.Properties;15import java.util.concurrent.ExecutionException;16import java.util.concurrent.Future;17import java.util.concurrent.TimeUnit;18import java.util.concurrent.TimeoutException;19import java.util.concurrent.atomic.AtomicInteger;20import java.util.stream.IntStream;21import java.util.concurrent.CountDownLatch;22import java.util.concurrent.ExecutorService;23import java.util.concurrent.Executors;24import java.util.HashMap;25import java.util.Map;26import java.util.concurrent.atomic.AtomicInteger;27import java.util.concurrent.atomic.AtomicLong;28import java.util.concurrent.atomic.AtomicBoolean;29import org.apache.kafka.clients.consumer.OffsetAndMetadata;30import org.apache.kafka.common.TopicPartition;31import org.apache.kafka.common.errors.WakeupException;32import org.apache.kafka.clients.consumer.ConsumerRebalanceListener;33import org.apache.kafka.clients.consumer.ConsumerConfig;34import org.apache.kafka.clients.consumer.Consumer;35import java.util.concurrent.atomic.AtomicReference;36import java.util.List;37import java.util.ArrayList;38import java.util.Iterator;39import java.util.Collections;40import java.util.concurrent.ArrayBlockingQueue;41import java.util.concurrent.BlockingQueue;42import java.util.concurrent.LinkedBlockingQueue;43import java.util.concurrent.TimeUnit;44import java.util.concurrent.Semaphore;45import java.util.concurrent.locks.Lock;46import java.util.concurrent.locks.ReentrantLock;47import java.util.concurrent.locks.Condition;48import java.util.concurrent.locks.ReentrantReadWriteLock;49import java.util.concurrent.locks.ReentrantLock;50import java.util.concurrent.locks.ReentrantReadWriteLock;51import java.util.concurrent.locks.Lock;52import java.util.concurrent.locks.Condition;53import java.util.concurrent.locks.ReentrantLock;54import java.util.concurrent.locks.ReentrantReadWriteLock;55import java.util.concurrent.locks.Lock;56import java.util.concurrent.locks.Condition;57import java.util.concurrent.locks.ReentrantLock;58import java.util.concurrent.locks.ReentrantReadWriteLock;59import java.util.concurrent.locks.Lock;60import java.util.concurrent.locks.Condition;61import java.util.concurrent.lock

KafkaContainerCluster

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2import java.util.Properties;3import java.util.concurrent.ExecutionException;4import org.apache.kafka.clients.admin.AdminClient;5import org.apache.kafka.clients.admin.ListTopicsResult;6import org.apache.kafka.clients.admin.NewTopic;7import org.apache.kafka.clients.producer.KafkaProducer;8import org.apache.kafka.clients.producer.ProducerRecord;9import org.apache.kafka.common.KafkaFuture;10import org.apache.kafka.common.serialization.StringSerializer;11public class KafkaContainerClusterTest {12    public static void main(String[] args) throws ExecutionException, InterruptedException {13        KafkaContainerCluster cluster = new KafkaContainerCluster();14        cluster.startCluster();15        cluster.createTopic("test-topic", 3, 3);16        Properties producerProps = new Properties();17        producerProps.setProperty("bootstrap.servers", cluster.getBootstrapServers());18        producerProps.setProperty("key.serializer", StringSerializer.class.getName());19        producerProps.setProperty("value.serializer", StringSerializer.class.getName());20        KafkaProducer<String, String> producer = new KafkaProducer<>(producerProps);21        producer.send(new ProducerRecord<>("test-topic", "test-key", "test-value")).get();22        Properties adminClientProps = new Properties();23        adminClientProps.setProperty("bootstrap.servers", cluster.getBootstrapServers());24        AdminClient adminClient = AdminClient.create(adminClientProps);25        ListTopicsResult listTopicsResult = adminClient.listTopics();26        KafkaFuture<java.util.Set<String>> kafkaFuture = listTopicsResult.names();27        System.out.println(kafkaFuture.get());28        cluster.stopCluster();29    }30}31import com.example.kafkacluster.KafkaContainerCluster;32import java.util.Properties;33import java.util.concurrent.ExecutionException;34import org.apache.kafka.clients.admin.AdminClient;35import org.apache.kafka.clients.admin.ListTopicsResult;36import org.apache.kafka.clients.admin.NewTopic;37import org.apache.kafka.clients.producer.KafkaProducer;38import org.apache.kafka.clients.producer.ProducerRecord;39import org.apache.kafka.common.KafkaFuture;40import org.apache.kafka.common.serialization.StringSerializer;41public class KafkaContainerClusterTest {42    public static void main(String[] args

KafkaContainerCluster

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2import org.apache.kafka.clients.admin.*;3import org.apache.kafka.clients.producer.ProducerRecord;4import org.apache.kafka.common.KafkaFuture;5import org.apache.kafka.common.TopicPartitionInfo;6import org.apache.kafka.common.serialization.StringSerializer;7import org.apache.kafka.common.utils.Utils;8import org.apache.kafka.streams.StreamsConfig;9import org.junit.Test;10import org.junit.runner.RunWith;11import org.springframework.beans.factory.annotation.Autowired;12import org.springframework.boot.test.context.SpringBootTest;13import org.springframework.boot.test.util.TestPropertyValues;14import org.springframework.context.ApplicationContextInitializer;15import org.springframework.context.ConfigurableApplicationContext;16import org.springframework.kafka.core.DefaultKafkaProducerFactory;17import org.springframework.kafka.core.KafkaTemplate;18import org.springframework.kafka.core.ProducerFactory;19import org.springframework.test.context.ContextConfiguration;20import org.springframework.test.context.junit4.SpringRunner;21import java.util.*;22import java.util.concurrent.ExecutionException;23import java.util.concurrent.TimeUnit;24import java.util.concurrent.TimeoutException;25@RunWith(SpringRunner.class)26@ContextConfiguration(initializers = {KafkaClusterTest.Initializer.class})27public class KafkaClusterTest {28    private KafkaContainerCluster kafkaContainerCluster;29    public static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {30        public void initialize(ConfigurableApplicationContext configurableApplicationContext) {31            TestPropertyValues.of(32                    "spring.kafka.bootstrap-servers=" + kafkaContainerCluster.getBootstrapServers(),33                    "spring.kafka.properties." + StreamsConfig.consumerPrefix(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG) + "=" + kafkaContainerCluster.getBootstrapServers(),34                    "spring.kafka.properties." + StreamsConfig.producerPrefix(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG) + "=" + kafkaContainerCluster.getBootstrapServers(),35                    "spring.kafka.properties." + StreamsConfig.consumerPrefix(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG) + "=" + "earliest"36            ).applyTo(configurableApplicationContext.getEnvironment());37        }38    }39    public void test() throws ExecutionException, InterruptedException, TimeoutException {40        AdminClient adminClient = AdminClient.create(kafkaContainerCluster.getAdminClientProperties());41        ListTopicsResult listTopicsResult = adminClient.listTopics();42        KafkaFuture<Set<String>> names = listTopicsResult.names();43        Set<String> topicNames = names.get(10, TimeUnit.SECONDS);44        System.out.println("Topic names: " + topicNames);45        if (topicNames.contains("topic1")) {

KafkaContainerCluster

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2public class KafkaCluster {3    public static void main(String[] args) {4        KafkaContainerCluster cluster = new KafkaContainerCluster(3);5        cluster.start();6        cluster.stop();7    }8}

KafkaContainerCluster

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2public class KafkaClusterMainClass {3    public static void main(String[] args) {4        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();5        kafkaContainerCluster.startCluster();6    }7}8import com.example.kafkacluster.KafkaContainerCluster;9public class KafkaClusterMainClass {10    public static void main(String[] args) {11        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();12        kafkaContainerCluster.startCluster();13    }14}15package com.example.kafkacluster;16import org.testcontainers.containers.KafkaContainer;17public class KafkaContainerCluster {18    private KafkaContainer kafkaContainer = null;19    public void startCluster() {20        kafkaContainer = new KafkaContainer();21        kafkaContainer.start();22    }23}

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