尽管通过测试，但仍在KafkaTest中获取异常

Question

我正在使用EmbeddedKafka运行Junit测试，我能够生产和消费EmbeddedKafka代理，并成功断言我发送的数据。

但是我可以在声明完成后在堆栈跟踪中看到很多异常。

1）

java.io.IOException：在读取响应之前已断开与0的连接在org.apache.kafka.clients.NetworkClientUtils.sendAndReceive（NetworkClientUtils.java:97）〜[kafka-clients-2.0.1.jar：na]在kafka.controller.RequestSendThread.doWork（ControllerChannelManager.scala：240）〜[kafka_2.11-2.0.1.jar：na]在kafka.utils.ShutdownableThread.run（ShutdownableThread.scala：82）[kafka_2.11-2.0.1.jar：na]

2）

2019-10-04 15：49：27.123 WARN 1812 --- [r-0-发送线程] kafka.controller.RequestSendThread：[RequestSendThread controllerId = 0]控制器0与代理localhost：54745的连接（id：0机架：null）不成功

java.net.SocketTimeoutException：在1000毫秒内无法连接在kafka.controller.RequestSendThread.brokerReady（ControllerChannelManager.scala：280）[kafka_2.11-2.0.1.jar：na]在kafka.controller.RequestSendThread.doWork（ControllerChannelManager.scala：233）[kafka_2.11-2.0.1.jar：na]在kafka.utils.ShutdownableThread.run（ShutdownableThread.scala：82）[kafka_2.11-2.0.1.jar：na]

3）

java.io.IOException：与localhost：54745（id：0 rack：null）的连接失败。在org.apache.kafka.clients.NetworkClientUtils.awaitReady（NetworkClientUtils.java:70）〜[kafka-clients-2.0.1.jar：na]在kafka.controller.RequestSendThread.brokerReady（ControllerChannelManager.scala：279）[kafka_2.11-2.0.1.jar：na]在kafka.controller.RequestSendThread.doWork（ControllerChannelManager.scala：233）[kafka_2.11-2.0.1.jar：na]在kafka.utils.ShutdownableThread.run（ShutdownableThread.scala：82）[kafka_2.11-2.0.1.jar：na]

4）

java.lang.InterruptedException：空在java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos（未知来源）〜[na：1.8.0_181]在java.util.concurrent.CountDownLatch.await（未知来源）〜[na：1.8.0_181]在kafka.utils.ShutdownableThread.pause（ShutdownableThread.scala：69）[kafka_2.11-2.0.1.jar：na]在kafka.controller.RequestSendThread.backoff $ 1（ControllerChannelManager.scala：221）〜[kafka_2.11-2.0.1.jar：na]在kafka.controller.RequestSendThread.doWork（ControllerChannelManager.scala：235）〜[kafka_2.11-2.0.1.jar：na]在kafka.utils.ShutdownableThread.run（ShutdownableThread.scala：82）[kafka_2.11-2.0.1.jar：na]

我的测试：

 import org.apache.kafka.clients.consumer.Consumer;
    import org.apache.kafka.clients.consumer.ConsumerConfig;
    import org.apache.kafka.clients.consumer.ConsumerRecord;
    import org.apache.kafka.common.TopicPartition;
    import org.apache.kafka.common.header.Header;
    import org.apache.kafka.common.header.Headers;
    import org.apache.kafka.common.serialization.StringDeserializer;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
    import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
    import org.springframework.kafka.support.serializer.JsonDeserializer;
    import org.springframework.kafka.test.context.EmbeddedKafka;
    import org.springframework.kafka.test.rule.EmbeddedKafkaRule;

    @RunWith(SpringRunner.class)
    @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, classes = TestApplication.class)
    @ActiveProfiles("test")
    @DirtiesContext(classMode = DirtiesContext.ClassMode.BEFORE_CLASS)
    //@EmbeddedKafka(controlledShutdown = true)
    public class KafkaUtilTest {

        private static String TOPIC = "PE";

        @Autowired
        KafkaUtil kafkaUtil;

        @Autowired
        ConfigurationProperties configProperties;

        SchedulingCallRequestDTO request;
        ScheduleOrderResponseDTOv2 response;
        Consumer<String, Object> consumer;
        HashMap<String, String> expectedHeaderValueMap;

        @ClassRule
        public static EmbeddedKafkaRule embeddedKafkarule = new EmbeddedKafkaRule(1, true, TOPIC);

        @BeforeClass
        public static void setUpBeforeClass() throws Exception {
            System.setProperty("spring.kafka.producer.bootstrap-servers",
                    embeddedKafkarule.getEmbeddedKafka().getBrokersAsString());
        }

        @AfterClass
        public static void tearDown() {
            embeddedKafkarule.getEmbeddedKafka().getKafkaServers().forEach(b -> b.shutdown());
            embeddedKafkarule.getEmbeddedKafka().getKafkaServers().forEach(b -> b.awaitShutdown());
        }

        @Before
        public void init() {
            readFile("0211");
            expectedHeaderValueMap = getExpectedHeaderValueMap();
            Map<String, Object> consumerConfigs = new HashMap<>(
                    KafkaTestUtils.consumerProps("consumer", "true", embeddedKafkarule.getEmbeddedKafka()));
            consumerConfigs.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
            consumerConfigs.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, JsonDeserializer.class);
            consumerConfigs.put(JsonDeserializer.TRUSTED_PACKAGES, "com.adessa.promiseengine.dto.kafka");

            consumer = new DefaultKafkaConsumerFactory<String, Object>(consumerConfigs).createConsumer();

            List<String> topics = new ArrayList<>();
            topics.add(TOPIC);

            TopicPartition topicPartition1 = new TopicPartition(TOPIC, 0);
            TopicPartition topicPartition2 = new TopicPartition(TOPIC, 1);
            List<TopicPartition> topicPartitions = new ArrayList<TopicPartition>();
            topicPartitions.add(topicPartition1);
            topicPartitions.add(topicPartition2);
            consumer.assign(topicPartitions);
            consumer.seekToBeginning(topicPartitions);

        }

        @Test
        public void testPublish() throws Exception {
            kafkaUtil.publishToKafka(request, response);
            kafkaUtil.kafkaTemplate.flush();
            ConsumerRecord<String, Object> consumedRecord = KafkaTestUtils.getSingleRecord(consumer, TOPIC);
            assertRecord(consumedRecord);
        }
        private void readFile(String testSequenceNo) {}

    }

为什么会有这些例外？在什么过程中它们正在发生？请帮助

Answer 1

您正在使用类别规则，并且在测试完成时经纪人被拆除，但是您让使用者保持开放；您需要在测试结束时关闭使用者。