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How to use start method of com.example.kafkacluster.KafkaContainerCluster class

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

Source:KafkaContainerCluster.java

...82    /**83     * Used by test container lifecycle itself.84     */85    @Override86    public void start() {87        Stream<Startable> startables = this.brokers.stream().map(Startable.class::cast);88        try {89            Startables.deepStart(startables).get(60, SECONDS);90        } catch (InterruptedException | ExecutionException | TimeoutException e) {91            e.printStackTrace();92        }93        Unreliables.retryUntilTrue(60, TimeUnit.SECONDS, () -> {94            Container.ExecResult result = this.zookeeper.execInContainer(95                    "sh", "-c",96                    "zookeeper-shell zookeeper:" + KafkaContainer.ZOOKEEPER_PORT + " ls /brokers/ids | tail -n 1"97            );98            String brokers = result.getStdout();99            return brokers != null && brokers.split(",").length == this.brokersNum;100        });101    }102    /**103     * Used by test container lifecycle itself....

Source:KafkaContainerClusterTest.java

...26    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(43                    ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers,44                    ProducerConfig.CLIENT_ID_CONFIG, UUID.randomUUID().toString()...

start

Using AI Code Generation

1package com.example.kafkacluster;2import org.apache.kafka.clients.consumer.Consumer;3import org.apache.kafka.clients.consumer.ConsumerRecord;4import org.apache.kafka.clients.consumer.ConsumerRecords;5import org.apache.kafka.clients.consumer.KafkaConsumer;6import org.apache.kafka.common.serialization.StringDeserializer;7import org.slf4j.Logger;8import org.slf4j.LoggerFactory;9import java.time.Duration;10import java.util.Arrays;11import java.util.Properties;12public class KafkaConsumerCluster {13    private static final Logger logger = LoggerFactory.getLogger(KafkaConsumerCluster.class.getName());14    public static void main(String[] args) {15        Properties properties = new Properties();16        properties.setProperty("bootstrap.servers", "localhost:9092,localhost:9093");17        properties.setProperty("key.deserializer", StringDeserializer.class.getName());18        properties.setProperty("value.deserializer", StringDeserializer.class.getName());19        properties.setProperty("group.id", "my-fourth-application");20        properties.setProperty("auto.offset.reset", "earliest");21        Consumer<String, String> consumer = new KafkaConsumer<String, String>(properties);22        consumer.subscribe(Arrays.asList("first_topic"));23        while (true) {24            for (ConsumerRecord<String, String> record : records) {25                logger.info("Key: " + record.key() + ", Value: " + record.value());26                logger.info("Partition: " + record.partition() + ", Offset:" + record.offset());27            }28        }29    }30}31package com.example.kafkacluster;32import org.apache.kafka.clients.producer.*;33import org.apache.kafka.common.serialization.StringSerializer;34import org.slf4j.Logger;35import org.slf4j.LoggerFactory;36import java.util.Properties;37public class KafkaProducerCluster {38    public static void main(String[] args) {39        final Logger logger = LoggerFactory.getLogger(KafkaProducerCluster.class);40        Properties properties = new Properties();41        properties.setProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092,localhost:9093");42        properties.setProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());43        properties.setProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());

start

Using AI Code Generation

1import com.example.kafkacluster.KafkaContainerCluster;2import org.apache.kafka.clients.producer.KafkaProducer;3import org.apache.kafka.clients.producer.Producer;4import org.apache.kafka.clients.producer.ProducerRecord;5import org.slf4j.Logger;6import org.slf4j.LoggerFactory;7import java.util.Properties;8import java.util.concurrent.ExecutionException;9public class KafkaContainerClusterExample {10    private static final Logger LOG = LoggerFactory.getLogger(KafkaContainerClusterExample.class);11    public static void main(String[] args) throws InterruptedException, ExecutionException {12        KafkaContainerCluster kafka = new KafkaContainerCluster(3);13        kafka.start();14        Properties props = new Properties();15        props.put("bootstrap.servers", kafka.getBootstrapServers());16        props.put("acks", "all");17        props.put("retries", 0);18        props.put("batch.size", 16384);19        props.put("linger.ms", 1);20        props.put("buffer.memory", 33554432);21        props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");22        props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");23        Producer<String, String> producer = new KafkaProducer<>(props);24        for (int i = 0; i < 100; i++)25            producer.send(new ProducerRecord<>("test", Integer.toString(i), Integer.toString(i))).get();26        producer.close();27        kafka.stop();28    }29}30package com.example.kafkacluster;31import org.testcontainers.containers.KafkaContainer;32public class KafkaContainerCluster {33    private final KafkaContainer[] kafkaContainers;34    public KafkaContainerCluster(int numberOfKafkaNodes) {35        this.kafkaContainers = new KafkaContainer[numberOfKafkaNodes];36        for (int i = 0; i < numberOfKafkaNodes; i++) {37            kafkaContainers[i] = new KafkaContainer();38        }39    }40    public void start() {41        for (KafkaContainer kafkaContainer : kafkaContainers) {42            kafkaContainer.start();43        }44    }45    public void stop() {46        for (KafkaContainer kafkaContainer : kafkaContainers) {47            kafkaContainer.stop();48        }49    }50    public String getBootstrapServers() {51        StringBuilder bootstrapServers = new StringBuilder();52        for (KafkaContainer kafkaContainer : kafkaContainers) {53            bootstrapServers.append(kafkaContainer.getBootstrapServers());54            bootstrapServers.append(",");55        }56        return bootstrapServers.toString();57    }58}

start

Using AI Code Generation

1package com.example.kafkacluster;2import org.testcontainers.containers.GenericContainer;3import org.testcontainers.containers.Network;4import org.testcontainers.containers.wait.strategy.Wait;5import java.util.ArrayList;6import java.util.List;7public class KafkaContainerCluster {8    private List<KafkaContainer> kafkaContainers = new ArrayList<>();9    private Network network;10    private int numberOfBrokers;11    public KafkaContainerCluster(int numberOfBrokers) {12        this.numberOfBrokers = numberOfBrokers;13    }14    public void start() {15        network = Network.newNetwork();16        for (int i = 0; i < numberOfBrokers; i++) {17            KafkaContainer kafkaContainer = new KafkaContainer()18                    .withNetwork(network)19                    .withNetworkAliases("kafka-" + i)20                    .withEnv("KAFKA_BROKER_ID", String.valueOf(i))21                    .withEnv("KAFKA_ZOOKEEPER_CONNECT", "zookeeper:2181")22                    .withEnv("KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR", "1")23                    .withEnv("KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR", "1")24                    .withEnv("KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS", "0")25                    .waitingFor(Wait.forLogMessage(".*started.*", 1));26            kafkaContainers.add(kafkaContainer);27            kafkaContainer.start();28        }29    }30    public void stop() {31        kafkaContainers.forEach(GenericContainer::stop);32    }33    public List<KafkaContainer> getKafkaContainers() {34        return kafkaContainers;35    }36    public Network getNetwork() {37        return network;38    }39}40package com.example.kafkacluster;41import org.apache.kafka.clients.admin.AdminClient;42import org.apache.kafka.clients.admin.AdminClientConfig;43import org.apache.kafka.clients.admin.ListTopicsResult;44import org.apache.kafka.clients.admin.NewTopic;45import org.apache.kafka.clients.consumer.ConsumerConfig;46import org.apache.kafka.clients.producer.ProducerConfig;47import org.apache.kafka.common.serialization.StringDeserializer;48import org.apache.kafka.common.serialization.StringSerializer;49import org.junit.After;50import org.junit.Before;51import org.junit.Test;52import org.testcontainers.containers.Network;53import java.util.Arrays;54import java.util.Collections;55import java.util

start

Using AI Code Generation

1package com.example.kafkacluster;2import org.testcontainers.containers.KafkaContainer;3import org.testcontainers.utility.DockerImageName;4import java.util.ArrayList;5import java.util.List;6import java.util.Properties;7public class KafkaContainerCluster {8    public static void main(String[] args) throws Exception {9        List<KafkaContainer> kafkaContainers = new ArrayList<>();10        for (int i = 0; i < 3; i++) {11            KafkaContainer kafkaContainer = new KafkaContainer(DockerImageName.parse("confluentinc/cp-kafka:5.5.2"));12            kafkaContainer.start();13            kafkaContainers.add(kafkaContainer);14        }15        Properties properties = new Properties();16        properties.put("bootstrap.servers", kafkaContainers.get(0).getBootstrapServers());17        properties.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");18        properties.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");19        System.out.println("kafka cluster started");20        Thread.sleep(30000);21        System.out.println("stopping kafka cluster");22        kafkaContainers.forEach(KafkaContainer::stop);23        System.out.println("kafka cluster stopped");24    }25}

start

Using AI Code Generation

1public class Main {2    public static void main(String[] args) throws Exception {3        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(1);4        kafkaContainerCluster.start();5    }6}7public class Main {8    public static void main(String[] args) throws Exception {9        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(3);10        kafkaContainerCluster.start();11    }12}13public class Main {14    public static void main(String[] args) throws Exception {15        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(5);16        kafkaContainerCluster.start();17    }18}19public class Main {20    public static void main(String[] args) throws Exception {21        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(7);22        kafkaContainerCluster.start();23    }24}25public class Main {26    public static void main(String[] args) throws Exception {27        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(9);28        kafkaContainerCluster.start();29    }30}31public class Main {32    public static void main(String[] args) throws Exception {33        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(11);34        kafkaContainerCluster.start();35    }36}37public class Main {38    public static void main(String[] args) throws Exception {39        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(13);40        kafkaContainerCluster.start();41    }42}43public class Main {44    public static void main(String[] args) throws Exception {45        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster(15);46        kafkaContainerCluster.start();47    }48}

start

Using AI Code Generation

1public class KafkaContainerClusterTest {2    public static void main(String[] args) throws Exception {3        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();4        kafkaContainerCluster.start();5    }6}7KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();8kafkaContainerCluster.start();9public class KafkaContainerClusterTest {10    public static void main(String[] args) throws Exception {11        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();12        kafkaContainerCluster.start();13    }14}15KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();16kafkaContainerCluster.start();17public class KafkaContainerClusterTest {18    public static void main(String[] args) throws Exception {19        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();20        kafkaContainerCluster.start();21    }22}23KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();24kafkaContainerCluster.start();25public class KafkaContainerClusterTest {26    public static void main(String[] args) throws Exception {27        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();28        kafkaContainerCluster.start();29    }30}31KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();32kafkaContainerCluster.start();33public class KafkaContainerClusterTest {34    public static void main(String[] args) throws Exception {35        KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();36        kafkaContainerCluster.start();37    }38}39KafkaContainerCluster kafkaContainerCluster = new KafkaContainerCluster();40kafkaContainerCluster.start();

start

Using AI Code Generation

1package com.example.kafkacluster;2import java.util.HashMap;3import java.util.Map;4public class KafkaContainerCluster {5    private static final int ZOOKEEPER_PORT = 2181;6    private static final int KAFKA_PORT = 9092;7    private static final int BROKER_ID = 0;8    private static final String ZOOKEEPER_HOST = "localhost";9    private static final String KAFKA_HOST = "localhost";10    private static final String ZOOKEEPER_CONNECT = "localhost:2181";11    private static final String KAFKA_LISTENER_SECURITY_PROTOCOL_MAP = "PLAINTEXT:PLAINTEXT";12    private static final String KAFKA_INTER_BROKER_LISTENER_NAME = "PLAINTEXT";13    private static final String KAFKA_ZOOKEEPER_CONNECT = "localhost:2181";14    private static final String KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR = "1";15    private static final Map<String, String> ENVIRONMENT_VARIABLES = new HashMap<>();16    static {17        ENVIRONMENT_VARIABLES.put("ZOOKEEPER_PORT", String.valueOf(ZOOKEEPER_PORT));18        ENVIRONMENT_VARIABLES.put("KAFKA_PORT", String.valueOf(KAFKA_PORT));19        ENVIRONMENT_VARIABLES.put("BROKER_ID", String.valueOf(BROKER_ID));20        ENVIRONMENT_VARIABLES.put("ZOOKEEPER_HOST", ZOOKEEPER_HOST);21        ENVIRONMENT_VARIABLES.put("KAFKA_HOST", KAFKA_HOST);22        ENVIRONMENT_VARIABLES.put("ZOOKEEPER_CONNECT", ZOOKEEPER_CONNECT);23        ENVIRONMENT_VARIABLES.put("KAFKA_ADVERTISED_LISTENERS", KAFKA_ADVERTISED_LISTENERS);24        ENVIRONMENT_VARIABLES.put("KAFKA_LISTENERS", KAFKA_LISTENERS);25        ENVIRONMENT_VARIABLES.put("KAFKA_LISTENER_SECURITY_PROTOCOL_MAP", KAFKA_LISTENER_SECURITY_PROTOCOL_MAP);26        ENVIRONMENT_VARIABLES.put("KAFKA_INTER_BROKER_LISTENER_NAME", KAFKA_INTER_BROKER_LISTENER_NAME);27        ENVIRONMENT_VARIABLES.put("KAFKA_ZOOKEEPER_CONNECT", KAFKA_ZOOKEEPER_CONNECT);

start

Using AI Code Generation

1package com.example.kafkacluster;2import java.util.Arrays;3import java.util.Properties;4import java.util.Set;5import java.util.concurrent.ExecutionException;6import java.util.concurrent.Future;7import java.util.concurrent.TimeUnit;8import java.util.concurrent.TimeoutException;9import org.apache.kafka.clients.admin.AdminClient;10import org.apache.kafka.clients.admin.AdminClientConfig;11import org.apache.kafka.clients.admin.NewTopic;12import org.apache.kafka.clients.producer.KafkaProducer;13import org.apache.kafka.clients.producer.Producer;14import org.apache.kafka.clients.producer.ProducerRecord;15import org.apache.kafka.clients.producer.RecordMetadata;16import org.apache.kafka.common.serialization.StringSerializer;17import org.slf4j.Logger;18import org.slf4j.LoggerFactory;19public class KafkaContainerCluster {20    private static final Logger log = LoggerFactory.getLogger(KafkaContainerCluster.class);21    private final KafkaContainerWrapper kafkaContainerWrapper;22    public KafkaContainerCluster() {23        this.kafkaContainerWrapper = new KafkaContainerWrapper();24    }25    public void start() {26        kafkaContainerWrapper.start();27    }28    public void stop() {29        kafkaContainerWrapper.stop();30    }31    public void createTopic(String topicName) {32        Properties properties = new Properties();33        properties.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaContainerWrapper.getBootstrapServers());34        try (AdminClient adminClient = AdminClient.create(properties)) {35            Set<String> existingTopics = adminClient.listTopics().names().get(10, TimeUnit.SECONDS);36            if (!existingTopics.contains(topicName)) {37                NewTopic topic = new NewTopic(topicName, 1, (short) 1);38                adminClient.createTopics(Arrays.asList(topic));39            }40        } catch (InterruptedException | ExecutionException | TimeoutException e) {41            throw new RuntimeException(e);42        }43    }44    public void produce(String topicName, String key, String value) {45        Properties properties = new Properties();46        properties.put("bootstrap.servers", kafkaContainerWrapper.getBootstrapServers());47        properties.put("key.serializer", StringSerializer.class.getName());48        properties.put("value.serializer", StringSerializer.class.getName());49        try (Producer<String, String> producer = new KafkaProducer<>(properties)) {50            ProducerRecord<String, String> record = new ProducerRecord<>(topicName, key, value);51            Future<RecordMetadata> future = producer.send(record);52            future.get(10, TimeUnit.SECONDS);53        } catch (InterruptedException | ExecutionException | TimeoutException

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