Example usage for org.springframework.kafka.core DefaultKafkaConsumerFactory DefaultKafkaConsumerFactory

Introduction

In this page you can find the example usage for org.springframework.kafka.core DefaultKafkaConsumerFactory DefaultKafkaConsumerFactory.

Prototype

public DefaultKafkaConsumerFactory(Map<String, Object> configs) 

Source Link

Document

Construct a factory with the provided configuration.

Usage

From source file:org.springframework.kafka.listener.ConcurrentMessageListenerContainerTests.java

@Test
public void testManualCommitSyncExisting() throws Exception {
    this.logger.info("Start MANUAL_IMMEDIATE with Existing");
    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<Integer, String>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic8);//from w w  w.j  av a  2 s  .  c  o  m
    template.sendDefault(0, "foo");
    template.sendDefault(2, "bar");
    template.sendDefault(0, "baz");
    template.sendDefault(2, "qux");
    template.flush();
    Map<String, Object> props = KafkaTestUtils.consumerProps("testManualExistingSync", "false", embeddedKafka);
    props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<Integer, String>(props);
    ContainerProperties containerProps = new ContainerProperties(topic8);
    containerProps.setSyncCommits(true);
    final CountDownLatch latch = new CountDownLatch(8);
    final BitSet bitSet = new BitSet(8);
    containerProps.setMessageListener((AcknowledgingMessageListener<Integer, String>) (message, ack) -> {
        ConcurrentMessageListenerContainerTests.this.logger.info("manualExisting: " + message);
        ack.acknowledge();
        bitSet.set((int) (message.partition() * 4 + message.offset()));
        latch.countDown();
    });
    containerProps.setAckMode(AckMode.MANUAL_IMMEDIATE);

    ConcurrentMessageListenerContainer<Integer, String> container = new ConcurrentMessageListenerContainer<>(cf,
            containerProps);
    container.setConcurrency(1);
    container.setBeanName("testManualExisting");
    container.start();
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());
    template.sendDefault(0, "fooo");
    template.sendDefault(2, "barr");
    template.sendDefault(0, "bazz");
    template.sendDefault(2, "quxx");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(bitSet.cardinality()).isEqualTo(8);
    container.stop();
    this.logger.info("Stop MANUAL_IMMEDIATE with Existing");
}

---

From source file:org.springframework.kafka.listener.ConcurrentMessageListenerContainerTests.java

@Test
public void testListenerException() throws Exception {
    this.logger.info("Start exception");
    Map<String, Object> props = KafkaTestUtils.consumerProps("test1", "true", embeddedKafka);
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<>(props);
    ContainerProperties containerProps = new ContainerProperties(topic6);
    containerProps.setAckCount(23);/*from w  ww  .  j  a v a 2  s .c  om*/
    ContainerProperties containerProps2 = new ContainerProperties(topic2);
    BeanUtils.copyProperties(containerProps, containerProps2, "topics", "topicPartitions", "topicPattern",
            "ackCount", "ackTime");
    final CountDownLatch latch = new CountDownLatch(4);
    final AtomicBoolean catchError = new AtomicBoolean(false);
    containerProps.setMessageListener((MessageListener<Integer, String>) message -> {
        ConcurrentMessageListenerContainerTests.this.logger.info("auto: " + message);
        latch.countDown();
        throw new RuntimeException("intended");
    });
    containerProps.setGenericErrorHandler((ErrorHandler) (thrownException, record) -> catchError.set(true));

    ConcurrentMessageListenerContainer<Integer, String> container = new ConcurrentMessageListenerContainer<>(cf,
            containerProps);
    container.setConcurrency(2);
    container.setBeanName("testException");

    container.start();
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());
    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic6);
    template.sendDefault(0, "foo");
    template.sendDefault(2, "bar");
    template.sendDefault(0, "baz");
    template.sendDefault(2, "qux");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(catchError.get()).isTrue();
    container.stop();
    this.logger.info("Stop exception");

}

---

From source file:org.springframework.kafka.listener.ConcurrentMessageListenerContainerTests.java

@Test
public void testAckOnErrorRecord() throws Exception {
    logger.info("Start ack on error");
    Map<String, Object> props = KafkaTestUtils.consumerProps("test9", "false", embeddedKafka);
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<>(props);
    final CountDownLatch latch = new CountDownLatch(4);
    ContainerProperties containerProps = new ContainerProperties(topic9);
    containerProps.setMessageListener((MessageListener<Integer, String>) message -> {
        logger.info("auto ack on error: " + message);
        latch.countDown();//  ww w . ja v  a2 s  .c om
        if (message.value().startsWith("b")) {
            throw new RuntimeException();
        }
    });
    containerProps.setSyncCommits(true);
    containerProps.setAckMode(AckMode.RECORD);
    containerProps.setAckOnError(false);
    ConcurrentMessageListenerContainer<Integer, String> container = new ConcurrentMessageListenerContainer<>(cf,
            containerProps);
    container.setConcurrency(2);
    container.setBeanName("testAckOnError");
    container.start();
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());
    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic9);
    template.sendDefault(0, 0, "foo");
    template.sendDefault(1, 0, "bar");
    template.sendDefault(0, 0, "baz");
    template.sendDefault(1, 0, "qux");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    container.stop();
    Consumer<Integer, String> consumer = cf.createConsumer();
    consumer.assign(Arrays.asList(new TopicPartition(topic9, 0), new TopicPartition(topic9, 1)));
    // this consumer is positioned at 1, the next offset after the successfully
    // processed 'foo'
    // it has not been updated because 'bar' failed
    assertThat(consumer.position(new TopicPartition(topic9, 0))).isEqualTo(1);
    // this consumer is positioned at 1, the next offset after the successfully
    // processed 'qux'
    // it has been updated even 'baz' failed
    assertThat(consumer.position(new TopicPartition(topic9, 1))).isEqualTo(2);
    consumer.close();
    logger.info("Stop ack on error");
}

---

From source file:org.springframework.kafka.listener.ConcurrentMessageListenerContainerTests.java

@Test
public void testRebalanceWithSlowConsumer() throws Exception {
    this.logger.info("Start auto");
    Map<String, Object> props = KafkaTestUtils.consumerProps("test101", "false", embeddedKafka);
    props.put(ConsumerConfig.FETCH_MIN_BYTES_CONFIG, "20000");
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<>(props);
    ContainerProperties containerProps = new ContainerProperties(topic1);
    final CountDownLatch latch = new CountDownLatch(8);
    final Set<String> listenerThreadNames = Collections.synchronizedSet(new HashSet<String>());
    List<String> receivedMessages = Collections.synchronizedList(new ArrayList<>());
    containerProps.setMessageListener((MessageListener<Integer, String>) message -> {
        listenerThreadNames.add(Thread.currentThread().getName());
        try {//from w  w w  . j  av  a2  s. c  o  m
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            // ignore
        }
        receivedMessages.add(message.value());
        listenerThreadNames.add(Thread.currentThread().getName());
        latch.countDown();
    });

    ConcurrentMessageListenerContainer<Integer, String> container = new ConcurrentMessageListenerContainer<>(cf,
            containerProps);
    ConcurrentMessageListenerContainer<Integer, String> container2 = new ConcurrentMessageListenerContainer<>(
            cf, containerProps);
    container.setConcurrency(1);
    container2.setConcurrency(1);
    container.setBeanName("testAuto");
    container2.setBeanName("testAuto2");
    container.start();
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());
    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic1);
    template.sendDefault(0, 0, "foo");
    template.sendDefault(0, 2, "bar");
    template.sendDefault(0, 0, "baz");
    template.sendDefault(0, 2, "qux");
    template.sendDefault(1, 2, "corge");
    template.sendDefault(1, 2, "grault");
    template.sendDefault(1, 2, "garply");
    template.sendDefault(1, 2, "waldo");
    template.flush();
    container2.start();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(receivedMessages).containsOnlyOnce("foo", "bar", "baz", "qux", "corge", "grault", "garply",
            "waldo");
    // all messages are received
    assertThat(receivedMessages).hasSize(8);
    // messages are received on separate threads
    assertThat(listenerThreadNames.size()).isGreaterThanOrEqualTo(2);
    container.stop();
    container2.stop();
    this.logger.info("Stop auto");
}

---

From source file:org.springframework.kafka.listener.KafkaMessageListenerContainerTests.java

@Test
public void testSlowListener() throws Exception {
    logger.info("Start " + this.testName.getMethodName());
    Map<String, Object> props = KafkaTestUtils.consumerProps("slow1", "false", embeddedKafka);
    //      props.put(ConsumerConfig.MAX_PARTITION_FETCH_BYTES_CONFIG, 6); // 2 per poll
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<Integer, String>(props);
    ContainerProperties containerProps = new ContainerProperties(topic1);

    final CountDownLatch latch = new CountDownLatch(6);
    final BitSet bitSet = new BitSet(6);
    containerProps.setMessageListener((MessageListener<Integer, String>) message -> {
        logger.info("slow1: " + message);
        bitSet.set((int) (message.partition() * 3 + message.offset()));
        try {//from w ww. j a  v  a 2 s  . c om
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        latch.countDown();
    });
    containerProps.setPauseAfter(100);
    KafkaMessageListenerContainer<Integer, String> container = new KafkaMessageListenerContainer<>(cf,
            containerProps);
    container.setBeanName("testSlow1");

    container.start();
    Consumer<?, ?> consumer = spyOnConsumer(container);
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());

    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<Integer, String>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic1);
    template.sendDefault(0, "foo");
    template.sendDefault(2, "bar");
    template.sendDefault(0, "baz");
    template.sendDefault(2, "qux");
    template.flush();
    Thread.sleep(300);
    template.sendDefault(0, "fiz");
    template.sendDefault(2, "buz");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(bitSet.cardinality()).isEqualTo(6);
    verify(consumer, atLeastOnce()).pause(anyObject());
    verify(consumer, atLeastOnce()).resume(anyObject());
    container.stop();
    logger.info("Stop " + this.testName.getMethodName());
}

---

From source file:org.springframework.kafka.listener.KafkaMessageListenerContainerTests.java

private void testSlowListenerManualGuts(AckMode ackMode, String topic) throws Exception {
    logger.info("Start " + this.testName.getMethodName() + ackMode);
    Map<String, Object> props = KafkaTestUtils.consumerProps("slow2", "false", embeddedKafka);
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<Integer, String>(props);
    ContainerProperties containerProps = new ContainerProperties(topic);
    containerProps.setSyncCommits(true);

    final CountDownLatch latch = new CountDownLatch(6);
    final BitSet bitSet = new BitSet(4);
    containerProps.setMessageListener((AcknowledgingMessageListener<Integer, String>) (message, ack) -> {
        logger.info("slow2: " + message);
        bitSet.set((int) (message.partition() * 3 + message.offset()));
        try {/*from   w  ww . j av a  2 s . c  o  m*/
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        ack.acknowledge();
        latch.countDown();
    });
    containerProps.setPauseAfter(100);
    containerProps.setAckMode(ackMode);

    KafkaMessageListenerContainer<Integer, String> container = new KafkaMessageListenerContainer<>(cf,
            containerProps);
    container.setBeanName("testSlow2");
    container.start();

    Consumer<?, ?> consumer = spyOnConsumer(container);

    final CountDownLatch commitLatch = new CountDownLatch(7);

    willAnswer(invocation -> {

        try {
            return invocation.callRealMethod();
        } finally {
            commitLatch.countDown();
        }

    }).given(consumer).commitSync(any());

    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());

    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<Integer, String>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic);
    template.sendDefault(0, "foo");
    template.sendDefault(2, "bar");
    template.sendDefault(0, "baz");
    template.sendDefault(2, "qux");
    template.flush();
    Thread.sleep(300);
    template.sendDefault(0, "fiz");
    template.sendDefault(2, "buz");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(commitLatch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(bitSet.cardinality()).isEqualTo(6);
    verify(consumer, atLeastOnce()).pause(anyObject());
    verify(consumer, atLeastOnce()).resume(anyObject());
    container.stop();
    logger.info("Stop " + this.testName.getMethodName() + ackMode);
}

---

From source file:org.springframework.kafka.listener.KafkaMessageListenerContainerTests.java

@Test
public void testSlowConsumerCommitsAreProcessed() throws Exception {
    Map<String, Object> props = KafkaTestUtils.consumerProps("slow", "false", embeddedKafka);
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<>(props);
    ContainerProperties containerProps = new ContainerProperties(topic5);
    containerProps.setAckCount(1);/*from   w w w  . jav a  2 s .com*/
    containerProps.setPauseAfter(100);
    containerProps.setAckMode(AckMode.MANUAL_IMMEDIATE);
    containerProps.setSyncCommits(true);

    containerProps.setMessageListener((AcknowledgingMessageListener<Integer, String>) (message, ack) -> {
        logger.info("slow: " + message);
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        ack.acknowledge();
    });

    KafkaMessageListenerContainer<Integer, String> container = new KafkaMessageListenerContainer<>(cf,
            containerProps);

    container.setBeanName("testSlow");

    container.start();
    Consumer<?, ?> consumer = spyOnConsumer(container);

    final CountDownLatch latch = new CountDownLatch(3);

    willAnswer(invocation -> {

        try {
            return invocation.callRealMethod();
        } finally {
            latch.countDown();
        }

    }).given(consumer).commitSync(any());

    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());

    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic5);
    template.sendDefault(0, 0, "foo");
    template.sendDefault(1, 2, "bar");
    template.flush();
    Thread.sleep(300);
    template.sendDefault(0, 0, "fiz");
    template.sendDefault(1, 2, "buz");
    template.flush();

    // Verify that commitSync is called when paused
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    verify(consumer, atLeastOnce()).pause(anyObject());
    verify(consumer, atLeastOnce()).resume(anyObject());
    container.stop();
}

---

From source file:org.springframework.kafka.listener.KafkaMessageListenerContainerTests.java

@Test
public void testCommitsAreFlushedOnStop() throws Exception {
    Map<String, Object> props = KafkaTestUtils.consumerProps("flushedOnStop", "false", embeddedKafka);
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<>(props);
    ContainerProperties containerProps = new ContainerProperties(topic5);
    containerProps.setAckCount(1);//  w ww .  ja  va  2  s .c o  m
    containerProps.setPauseAfter(100);
    // set large values, ensuring that commits don't happen before `stop()`
    containerProps.setAckTime(20000);
    containerProps.setAckCount(20000);
    containerProps.setAckMode(AckMode.COUNT_TIME);

    final CountDownLatch latch = new CountDownLatch(4);
    containerProps.setMessageListener((MessageListener<Integer, String>) message -> {
        logger.info("flushed: " + message);
        latch.countDown();
    });
    KafkaMessageListenerContainer<Integer, String> container = new KafkaMessageListenerContainer<>(cf,
            containerProps);
    container.setBeanName("testManualFlushed");

    container.start();
    Consumer<?, ?> consumer = spyOnConsumer(container);
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());

    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic5);
    template.sendDefault(0, 0, "foo");
    template.sendDefault(1, 2, "bar");
    template.flush();
    Thread.sleep(300);
    template.sendDefault(0, 0, "fiz");
    template.sendDefault(1, 2, "buz");
    template.flush();

    // Verify that commitSync is called when paused
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    // Verify that just the initial commit is processed before stop
    verify(consumer, times(1)).commitSync(any());
    container.stop();
    // Verify that a commit has been made on stop
    verify(consumer, times(2)).commitSync(any());
}

---

From source file:org.springframework.kafka.listener.KafkaMessageListenerContainerTests.java

@Test
public void testSlowConsumerWithException() throws Exception {
    logger.info("Start " + this.testName.getMethodName());
    Map<String, Object> props = KafkaTestUtils.consumerProps("slow3", "false", embeddedKafka);
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<Integer, String>(props);
    ContainerProperties containerProps = new ContainerProperties(topic3);

    final CountDownLatch latch = new CountDownLatch(18);
    final BitSet bitSet = new BitSet(6);
    final Map<String, AtomicInteger> faults = new HashMap<>();
    RetryingMessageListenerAdapter<Integer, String> adapter = new RetryingMessageListenerAdapter<>(
            new MessageListener<Integer, String>() {

                @Override/*  www.  j av  a 2s . c om*/
                public void onMessage(ConsumerRecord<Integer, String> message) {
                    logger.info("slow3: " + message);
                    bitSet.set((int) (message.partition() * 3 + message.offset()));
                    String key = message.topic() + message.partition() + message.offset();
                    if (faults.get(key) == null) {
                        faults.put(key, new AtomicInteger(1));
                    } else {
                        faults.get(key).incrementAndGet();
                    }
                    latch.countDown(); // 3 per = 18
                    if (faults.get(key).get() < 3) { // succeed on the third attempt
                        throw new FooEx();
                    }
                }

            }, buildRetry(), null);
    containerProps.setMessageListener(adapter);
    containerProps.setPauseAfter(100);

    KafkaMessageListenerContainer<Integer, String> container = new KafkaMessageListenerContainer<>(cf,
            containerProps);
    container.setBeanName("testSlow3");

    container.start();
    Consumer<?, ?> consumer = spyOnConsumer(container);
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());

    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic3);
    template.sendDefault(0, "foo");
    template.sendDefault(2, "bar");
    template.sendDefault(0, "baz");
    template.sendDefault(2, "qux");
    template.flush();
    Thread.sleep(300);
    template.sendDefault(0, "fiz");
    template.sendDefault(2, "buz");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(bitSet.cardinality()).isEqualTo(6);
    verify(consumer, atLeastOnce()).pause(anyObject());
    verify(consumer, atLeastOnce()).resume(anyObject());
    container.stop();
    logger.info("Stop " + this.testName.getMethodName());
}

---

From source file:org.springframework.kafka.listener.KafkaMessageListenerContainerTests.java

@Test
public void testSlowConsumerWithSlowThenExceptionThenGood() throws Exception {
    logger.info("Start " + this.testName.getMethodName());
    Map<String, Object> props = KafkaTestUtils.consumerProps("slow4", "false", embeddedKafka);
    DefaultKafkaConsumerFactory<Integer, String> cf = new DefaultKafkaConsumerFactory<Integer, String>(props);
    ContainerProperties containerProps = new ContainerProperties(topic4);
    final CountDownLatch latch = new CountDownLatch(18);
    final BitSet bitSet = new BitSet(6);
    final Map<String, AtomicInteger> faults = new HashMap<>();
    RetryingMessageListenerAdapter<Integer, String> adapter = new RetryingMessageListenerAdapter<>(
            new MessageListener<Integer, String>() {

                @Override//  www.  ja v  a2 s.c  om
                public void onMessage(ConsumerRecord<Integer, String> message) {
                    logger.info("slow4: " + message);
                    bitSet.set((int) (message.partition() * 4 + message.offset()));
                    String key = message.topic() + message.partition() + message.offset();
                    if (faults.get(key) == null) {
                        faults.put(key, new AtomicInteger(1));
                    } else {
                        faults.get(key).incrementAndGet();
                    }
                    latch.countDown(); // 3 per = 18
                    if (faults.get(key).get() == 1) {
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                            Thread.currentThread().interrupt();
                        }
                    }
                    if (faults.get(key).get() < 3) { // succeed on the third attempt
                        throw new FooEx();
                    }
                }

            }, buildRetry(), null);
    containerProps.setMessageListener(adapter);
    containerProps.setPauseAfter(100);

    KafkaMessageListenerContainer<Integer, String> container = new KafkaMessageListenerContainer<>(cf,
            containerProps);
    container.setBeanName("testSlow4");

    container.start();
    Consumer<?, ?> consumer = spyOnConsumer(container);
    ContainerTestUtils.waitForAssignment(container, embeddedKafka.getPartitionsPerTopic());

    Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
    ProducerFactory<Integer, String> pf = new DefaultKafkaProducerFactory<>(senderProps);
    KafkaTemplate<Integer, String> template = new KafkaTemplate<>(pf);
    template.setDefaultTopic(topic4);
    template.sendDefault(0, "foo");
    template.sendDefault(2, "bar");
    template.sendDefault(0, "baz");
    template.sendDefault(2, "qux");
    template.flush();
    Thread.sleep(300);
    template.sendDefault(0, "fiz");
    template.sendDefault(2, "buz");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    assertThat(bitSet.cardinality()).isEqualTo(6);
    verify(consumer, atLeastOnce()).pause(anyObject());
    verify(consumer, atLeastOnce()).resume(anyObject());
    container.stop();
    logger.info("Stop " + this.testName.getMethodName());
}

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