Examples with ConsumerMetadata org.apache.kafka.clients.consumer.internals.ConsumerMetadata used on opensource projects

Example 11 with ConsumerMetadata

use of org.apache.kafka.clients.consumer.internals.ConsumerMetadata in project kafka by apache.

the class KafkaConsumerTest method testReturnRecordsDuringRebalance.

@Test
public void testReturnRecordsDuringRebalance() throws InterruptedException {
    Time time = new MockTime(1L);
    ConsumerMetadata metadata = createMetadata(subscription);
    MockClient client = new MockClient(time, metadata);
    ConsumerPartitionAssignor assignor = new CooperativeStickyAssignor();
    KafkaConsumer<String, String> consumer = newConsumer(time, client, subscription, metadata, assignor, true, groupInstanceId);
    initMetadata(client, Utils.mkMap(Utils.mkEntry(topic, 1), Utils.mkEntry(topic2, 1), Utils.mkEntry(topic3, 1)));
    consumer.subscribe(Arrays.asList(topic, topic2), getConsumerRebalanceListener(consumer));
    Node node = metadata.fetch().nodes().get(0);
    Node coordinator = prepareRebalance(client, node, assignor, Arrays.asList(tp0, t2p0), null);
    // a poll with non-zero milliseconds would complete three round-trips (discover, join, sync)
    TestUtils.waitForCondition(() -> {
        consumer.poll(Duration.ofMillis(100L));
        return consumer.assignment().equals(Utils.mkSet(tp0, t2p0));
    }, "Does not complete rebalance in time");
    assertEquals(Utils.mkSet(topic, topic2), consumer.subscription());
    assertEquals(Utils.mkSet(tp0, t2p0), consumer.assignment());
    // prepare a response of the outstanding fetch so that we have data available on the next poll
    Map<TopicPartition, FetchInfo> fetches1 = new HashMap<>();
    fetches1.put(tp0, new FetchInfo(0, 1));
    fetches1.put(t2p0, new FetchInfo(0, 10));
    client.respondFrom(fetchResponse(fetches1), node);
    ConsumerRecords<String, String> records = consumer.poll(Duration.ZERO);
    // verify that the fetch occurred as expected
    assertEquals(11, records.count());
    assertEquals(1L, consumer.position(tp0));
    assertEquals(10L, consumer.position(t2p0));
    // prepare the next response of the prefetch
    fetches1.clear();
    fetches1.put(tp0, new FetchInfo(1, 1));
    fetches1.put(t2p0, new FetchInfo(10, 20));
    client.respondFrom(fetchResponse(fetches1), node);
    // subscription change
    consumer.subscribe(Arrays.asList(topic, topic3), getConsumerRebalanceListener(consumer));
    // verify that subscription has changed but assignment is still unchanged
    assertEquals(Utils.mkSet(topic, topic3), consumer.subscription());
    assertEquals(Utils.mkSet(tp0, t2p0), consumer.assignment());
    // mock the offset commit response for to be revoked partitions
    Map<TopicPartition, Long> partitionOffsets1 = new HashMap<>();
    partitionOffsets1.put(t2p0, 10L);
    AtomicBoolean commitReceived = prepareOffsetCommitResponse(client, coordinator, partitionOffsets1);
    // poll once which would not complete the rebalance
    records = consumer.poll(Duration.ZERO);
    // clear out the prefetch so it doesn't interfere with the rest of the test
    fetches1.clear();
    fetches1.put(tp0, new FetchInfo(2, 1));
    client.respondFrom(fetchResponse(fetches1), node);
    // verify that the fetch still occurred as expected
    assertEquals(Utils.mkSet(topic, topic3), consumer.subscription());
    assertEquals(Collections.singleton(tp0), consumer.assignment());
    assertEquals(1, records.count());
    assertEquals(2L, consumer.position(tp0));
    // verify that the offset commits occurred as expected
    assertTrue(commitReceived.get());
    // mock rebalance responses
    client.respondFrom(joinGroupFollowerResponse(assignor, 2, "memberId", "leaderId", Errors.NONE), coordinator);
    // we need to poll 1) for getting the join response, and then send the sync request;
    // 2) for getting the sync response
    records = consumer.poll(Duration.ZERO);
    // should not finish the response yet
    assertEquals(Utils.mkSet(topic, topic3), consumer.subscription());
    assertEquals(Collections.singleton(tp0), consumer.assignment());
    assertEquals(1, records.count());
    assertEquals(3L, consumer.position(tp0));
    fetches1.clear();
    fetches1.put(tp0, new FetchInfo(3, 1));
    client.respondFrom(fetchResponse(fetches1), node);
    // now complete the rebalance
    client.respondFrom(syncGroupResponse(Arrays.asList(tp0, t3p0), Errors.NONE), coordinator);
    AtomicInteger count = new AtomicInteger(0);
    TestUtils.waitForCondition(() -> {
        ConsumerRecords<String, String> recs = consumer.poll(Duration.ofMillis(100L));
        return consumer.assignment().equals(Utils.mkSet(tp0, t3p0)) && count.addAndGet(recs.count()) == 1;
    }, "Does not complete rebalance in time");
    // should have t3 but not sent yet the t3 records
    assertEquals(Utils.mkSet(topic, topic3), consumer.subscription());
    assertEquals(Utils.mkSet(tp0, t3p0), consumer.assignment());
    assertEquals(4L, consumer.position(tp0));
    assertEquals(0L, consumer.position(t3p0));
    fetches1.clear();
    fetches1.put(tp0, new FetchInfo(4, 1));
    fetches1.put(t3p0, new FetchInfo(0, 100));
    client.respondFrom(fetchResponse(fetches1), node);
    count.set(0);
    TestUtils.waitForCondition(() -> {
        ConsumerRecords<String, String> recs = consumer.poll(Duration.ofMillis(100L));
        return count.addAndGet(recs.count()) == 101;
    }, "Does not complete rebalance in time");
    assertEquals(5L, consumer.position(tp0));
    assertEquals(100L, consumer.position(t3p0));
    client.requests().clear();
    consumer.unsubscribe();
    consumer.close();
}

Example 12 with ConsumerMetadata

use of org.apache.kafka.clients.consumer.internals.ConsumerMetadata in project kafka by apache.

the class KafkaConsumerTest method verifyDeprecatedPollDoesNotTimeOutDuringMetadataUpdate.

@SuppressWarnings("deprecation")
@Test
public void verifyDeprecatedPollDoesNotTimeOutDuringMetadataUpdate() {
    final ConsumerMetadata metadata = createMetadata(subscription);
    final MockClient client = new MockClient(time, metadata);
    initMetadata(client, Collections.singletonMap(topic, 1));
    Node node = metadata.fetch().nodes().get(0);
    final KafkaConsumer<String, String> consumer = newConsumer(time, client, subscription, metadata, assignor, true, groupInstanceId);
    consumer.subscribe(singleton(topic), getConsumerRebalanceListener(consumer));
    prepareRebalance(client, node, assignor, singletonList(tp0), null);
    consumer.poll(0L);
    // The underlying client SHOULD get a fetch request
    final Queue<ClientRequest> requests = client.requests();
    assertEquals(1, requests.size());
    final Class<? extends AbstractRequest.Builder> aClass = requests.peek().requestBuilder().getClass();
    assertEquals(FetchRequest.Builder.class, aClass);
}

Example 13 with ConsumerMetadata

use of org.apache.kafka.clients.consumer.internals.ConsumerMetadata in project kafka by apache.

the class KafkaConsumerTest method testOffsetIsValidAfterSeek.

@Test
public void testOffsetIsValidAfterSeek() {
    SubscriptionState subscription = new SubscriptionState(new LogContext(), OffsetResetStrategy.LATEST);
    ConsumerMetadata metadata = createMetadata(subscription);
    MockClient client = new MockClient(time, metadata);
    initMetadata(client, Collections.singletonMap(topic, 1));
    KafkaConsumer<String, String> consumer = newConsumer(time, client, subscription, metadata, assignor, true, groupId, Optional.empty(), false);
    consumer.assign(singletonList(tp0));
    consumer.seek(tp0, 20L);
    consumer.poll(Duration.ZERO);
    assertEquals(subscription.validPosition(tp0).offset, 20L);
}

Example 14 with ConsumerMetadata

use of org.apache.kafka.clients.consumer.internals.ConsumerMetadata in project kafka by apache.

the class KafkaConsumerTest method testPollThrowsInterruptExceptionIfInterrupted.

@Test
public void testPollThrowsInterruptExceptionIfInterrupted() {
    final ConsumerMetadata metadata = createMetadata(subscription);
    final MockClient client = new MockClient(time, metadata);
    initMetadata(client, Collections.singletonMap(topic, 1));
    Node node = metadata.fetch().nodes().get(0);
    KafkaConsumer<String, String> consumer = newConsumer(time, client, subscription, metadata, assignor, false, groupInstanceId);
    consumer.subscribe(singleton(topic), getConsumerRebalanceListener(consumer));
    prepareRebalance(client, node, assignor, singletonList(tp0), null);
    consumer.updateAssignmentMetadataIfNeeded(time.timer(Long.MAX_VALUE));
    consumer.poll(Duration.ZERO);
    // interrupt the thread and call poll
    try {
        Thread.currentThread().interrupt();
        assertThrows(InterruptException.class, () -> consumer.poll(Duration.ZERO));
    } finally {
        // clear interrupted state again since this thread may be reused by JUnit
        Thread.interrupted();
        consumer.close(Duration.ofMillis(0));
    }
}

Example 15 with ConsumerMetadata

use of org.apache.kafka.clients.consumer.internals.ConsumerMetadata in project kafka by apache.

the class KafkaConsumerTest method testManualAssignmentChangeWithAutoCommitEnabled.

@Test
public void testManualAssignmentChangeWithAutoCommitEnabled() {
    ConsumerMetadata metadata = createMetadata(subscription);
    MockClient client = new MockClient(time, metadata);
    Map<String, Integer> tpCounts = new HashMap<>();
    tpCounts.put(topic, 1);
    tpCounts.put(topic2, 1);
    initMetadata(client, tpCounts);
    Node node = metadata.fetch().nodes().get(0);
    ConsumerPartitionAssignor assignor = new RangeAssignor();
    KafkaConsumer<String, String> consumer = newConsumer(time, client, subscription, metadata, assignor, true, groupInstanceId);
    // lookup coordinator
    client.prepareResponseFrom(FindCoordinatorResponse.prepareResponse(Errors.NONE, groupId, node), node);
    Node coordinator = new Node(Integer.MAX_VALUE - node.id(), node.host(), node.port());
    // manual assignment
    consumer.assign(singleton(tp0));
    consumer.seekToBeginning(singleton(tp0));
    // fetch offset for one topic
    client.prepareResponseFrom(offsetResponse(Collections.singletonMap(tp0, 0L), Errors.NONE), coordinator);
    assertEquals(0, consumer.committed(Collections.singleton(tp0)).get(tp0).offset());
    // verify that assignment immediately changes
    assertEquals(consumer.assignment(), singleton(tp0));
    // there shouldn't be any need to lookup the coordinator or fetch committed offsets.
    // we just lookup the starting position and send the record fetch.
    client.prepareResponse(listOffsetsResponse(Collections.singletonMap(tp0, 10L)));
    client.prepareResponse(fetchResponse(tp0, 10L, 1));
    ConsumerRecords<String, String> records = consumer.poll(Duration.ofMillis(1));
    assertEquals(1, records.count());
    assertEquals(11L, consumer.position(tp0));
    // mock the offset commit response for to be revoked partitions
    AtomicBoolean commitReceived = prepareOffsetCommitResponse(client, coordinator, tp0, 11);
    // new manual assignment
    consumer.assign(singleton(t2p0));
    // verify that assignment immediately changes
    assertEquals(consumer.assignment(), singleton(t2p0));
    // verify that the offset commits occurred as expected
    assertTrue(commitReceived.get());
    client.requests().clear();
    consumer.close();
}