07-SpringBoot2.x整合Kafka客户端+adminApi单元测试

• 在线创建 ：https://start.spring.io/ - 采用springboot2.5 + jdk11

  • idea记得配置jdk11

• 添加依赖 kafka-clients

<dependency>
      <groupId>org.apache.kafka</groupId>
      <artifactId>kafka-clients</artifactId>
      <version>2.4.0</version>
</dependency>

• 单元测试配置客户端+创建topic+列举topic列表+删除topic+查看某个topic详情+增加topic分区数量

public class KafkaAdminTest {

    private static final String TOPIC_NAME = "xdclass-sp-topic-test";

    /**
     * 设置admin 客户端
     *
     * @return
     */
    public static AdminClient initAdminClient() {
        Properties properties = new Properties();
        properties.setProperty(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "112.74.55.160:9092");

        AdminClient adminClient = AdminClient.create(properties);
        return adminClient;
    }
    
    /**
     * 创建topic
     */
    @Test
    public void createTopicTest() {
        AdminClient adminClient = initAdminClient();

        //指定分区数量，副本数量
        NewTopic newTopic = new NewTopic(TOPIC_NAME, 2, (short) 1);

        CreateTopicsResult createTopicsResult = adminClient.createTopics(Arrays.asList(newTopic));
        try {
            //future等待创建，成功则不会有任何报错
            createTopicsResult.all().get();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } catch (ExecutionException e) {
            e.printStackTrace();
        }

    }

    /**
     * 列举topic列表
     *
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @Test
    public void listTopicTest() throws ExecutionException, InterruptedException {
        AdminClient adminClient = initAdminClient();

        //是否查看内部的topic，可以不用
        ListTopicsOptions options = new ListTopicsOptions();
        options.listInternal(true);

        ListTopicsResult listTopicsResult = adminClient.listTopics(options);

        Set<String> topics = listTopicsResult.names().get();
        for (String name : topics) {
            System.err.println(name);
        }

    }
    
    /**
     * 删除topic
     */
    @Test
    public void delTopicTest() throws ExecutionException, InterruptedException {
        AdminClient adminClient = initAdminClient();

        DeleteTopicsResult deleteTopicsResult = adminClient.deleteTopics(Arrays.asList("xdclass-sp11-topic", "version1-topic", "my-topic"));

        deleteTopicsResult.all().get();
    }
    
    /**
     * 查看某个topic详情
     */
    @Test
    public void detailTopicTest() throws ExecutionException, InterruptedException {

        AdminClient adminClient = initAdminClient();
        DescribeTopicsResult describeTopicsResult = adminClient.describeTopics(Arrays.asList(TOPIC_NAME));

        Map<String, TopicDescription> stringTopicDescriptionMap = describeTopicsResult.all().get();

        Set<Map.Entry<String, TopicDescription>> entries = stringTopicDescriptionMap.entrySet();

        entries.stream().forEach((entry) -> System.out.println("name ：" + entry.getKey() + " , desc: " + entry.getValue()));
    }
    
    /**
     * 增加topic分区数量
     *
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @Test
    public void incrPartitionTopicTest() throws ExecutionException, InterruptedException {
        Map<String, NewPartitions> infoMap = new HashMap<>(1);


        AdminClient adminClient = initAdminClient();
        NewPartitions newPartitions = NewPartitions.increaseTo(5);

        infoMap.put(TOPIC_NAME, newPartitions);

        CreatePartitionsResult createPartitionsResult = adminClient.createPartitions(infoMap);

        createPartitionsResult.all().get();

    }
    
}