Examples with MockClient org.apache.kafka.clients.MockClient used on opensource projects

Example 16 with MockClient

use of org.apache.kafka.clients.MockClient in project kafka by apache.

the class KafkaConsumerTest method testWakeupWithFetchDataAvailable.

@Test
public void testWakeupWithFetchDataAvailable() {
    int rebalanceTimeoutMs = 60000;
    int sessionTimeoutMs = 30000;
    int heartbeatIntervalMs = 3000;
    // adjust auto commit interval lower than heartbeat so we don't need to deal with
    // a concurrent heartbeat request
    int autoCommitIntervalMs = 1000;
    Time time = new MockTime();
    Cluster cluster = TestUtils.singletonCluster(topic, 1);
    Node node = cluster.nodes().get(0);
    Metadata metadata = new Metadata(0, Long.MAX_VALUE);
    metadata.update(cluster, Collections.<String>emptySet(), time.milliseconds());
    MockClient client = new MockClient(time, metadata);
    client.setNode(node);
    PartitionAssignor assignor = new RoundRobinAssignor();
    final KafkaConsumer<String, String> consumer = newConsumer(time, client, metadata, assignor, rebalanceTimeoutMs, sessionTimeoutMs, heartbeatIntervalMs, true, autoCommitIntervalMs);
    consumer.subscribe(Arrays.asList(topic), getConsumerRebalanceListener(consumer));
    prepareRebalance(client, node, assignor, Arrays.asList(tp0), null);
    consumer.poll(0);
    // respond to the outstanding fetch so that we have data available on the next poll
    client.respondFrom(fetchResponse(tp0, 0, 5), node);
    client.poll(0, time.milliseconds());
    consumer.wakeup();
    try {
        consumer.poll(0);
        fail();
    } catch (WakeupException e) {
    }
    // make sure the position hasn't been updated
    assertEquals(0, consumer.position(tp0));
    // the next poll should return the completed fetch
    ConsumerRecords<String, String> records = consumer.poll(0);
    assertEquals(5, records.count());
}

Example 17 with MockClient

use of org.apache.kafka.clients.MockClient in project kafka by apache.

the class KafkaConsumerTest method prepareRebalance.

private Node prepareRebalance(MockClient client, Node node, final Set<String> subscribedTopics, PartitionAssignor assignor, List<TopicPartition> partitions, Node coordinator) {
    if (coordinator == null) {
        // lookup coordinator
        client.prepareResponseFrom(new GroupCoordinatorResponse(Errors.NONE, node), node);
        coordinator = new Node(Integer.MAX_VALUE - node.id(), node.host(), node.port());
    }
    // join group
    client.prepareResponseFrom(new MockClient.RequestMatcher() {

        @Override
        public boolean matches(AbstractRequest body) {
            JoinGroupRequest joinGroupRequest = (JoinGroupRequest) body;
            PartitionAssignor.Subscription subscription = ConsumerProtocol.deserializeSubscription(joinGroupRequest.groupProtocols().get(0).metadata());
            return subscribedTopics.equals(new HashSet<>(subscription.topics()));
        }
    }, joinGroupFollowerResponse(assignor, 1, "memberId", "leaderId", Errors.NONE), coordinator);
    // sync group
    client.prepareResponseFrom(syncGroupResponse(partitions, Errors.NONE), coordinator);
    return coordinator;
}

Example 18 with MockClient

use of org.apache.kafka.clients.MockClient in project kafka by apache.

the class KafkaConsumerTest method verifyHeartbeatSent.

@Test
public void verifyHeartbeatSent() throws Exception {
    int rebalanceTimeoutMs = 60000;
    int sessionTimeoutMs = 30000;
    int heartbeatIntervalMs = 1000;
    int autoCommitIntervalMs = 10000;
    Time time = new MockTime();
    Cluster cluster = TestUtils.singletonCluster(topic, 1);
    Node node = cluster.nodes().get(0);
    Metadata metadata = new Metadata(0, Long.MAX_VALUE);
    metadata.update(cluster, Collections.<String>emptySet(), time.milliseconds());
    MockClient client = new MockClient(time, metadata);
    client.setNode(node);
    PartitionAssignor assignor = new RoundRobinAssignor();
    final KafkaConsumer<String, String> consumer = newConsumer(time, client, metadata, assignor, rebalanceTimeoutMs, sessionTimeoutMs, heartbeatIntervalMs, true, autoCommitIntervalMs);
    consumer.subscribe(Arrays.asList(topic), getConsumerRebalanceListener(consumer));
    Node coordinator = prepareRebalance(client, node, assignor, Arrays.asList(tp0), null);
    // initial fetch
    client.prepareResponseFrom(fetchResponse(tp0, 0, 0), node);
    consumer.poll(0);
    assertEquals(Collections.singleton(tp0), consumer.assignment());
    AtomicBoolean heartbeatReceived = prepareHeartbeatResponse(client, coordinator);
    // heartbeat interval is 2 seconds
    time.sleep(heartbeatIntervalMs);
    Thread.sleep(heartbeatIntervalMs);
    consumer.poll(0);
    assertTrue(heartbeatReceived.get());
}

Example 19 with MockClient

use of org.apache.kafka.clients.MockClient in project kafka by apache.

the class KafkaConsumerTest method testCommitsFetchedDuringAssign.

@Test
public void testCommitsFetchedDuringAssign() {
    long offset1 = 10000;
    long offset2 = 20000;
    int rebalanceTimeoutMs = 6000;
    int sessionTimeoutMs = 3000;
    int heartbeatIntervalMs = 2000;
    int autoCommitIntervalMs = 1000;
    Time time = new MockTime();
    Cluster cluster = TestUtils.singletonCluster(topic, 1);
    Node node = cluster.nodes().get(0);
    Metadata metadata = new Metadata(0, Long.MAX_VALUE);
    metadata.update(cluster, Collections.<String>emptySet(), time.milliseconds());
    MockClient client = new MockClient(time, metadata);
    client.setNode(node);
    PartitionAssignor assignor = new RoundRobinAssignor();
    final KafkaConsumer<String, String> consumer = newConsumer(time, client, metadata, assignor, rebalanceTimeoutMs, sessionTimeoutMs, heartbeatIntervalMs, true, autoCommitIntervalMs);
    consumer.assign(singletonList(tp0));
    // lookup coordinator
    client.prepareResponseFrom(new GroupCoordinatorResponse(Errors.NONE, node), node);
    Node coordinator = new Node(Integer.MAX_VALUE - node.id(), node.host(), node.port());
    // fetch offset for one topic
    client.prepareResponseFrom(offsetResponse(Collections.singletonMap(tp0, offset1), Errors.NONE), coordinator);
    assertEquals(offset1, consumer.committed(tp0).offset());
    consumer.assign(Arrays.asList(tp0, tp1));
    // fetch offset for two topics
    Map<TopicPartition, Long> offsets = new HashMap<>();
    offsets.put(tp0, offset1);
    offsets.put(tp1, offset2);
    client.prepareResponseFrom(offsetResponse(offsets, Errors.NONE), coordinator);
    assertEquals(offset1, consumer.committed(tp0).offset());
    assertEquals(offset2, consumer.committed(tp1).offset());
}

Example 20 with MockClient

use of org.apache.kafka.clients.MockClient in project kafka by apache.

the class KafkaConsumerTest method testAutoCommitSentBeforePositionUpdate.

@Test
public void testAutoCommitSentBeforePositionUpdate() {
    int rebalanceTimeoutMs = 60000;
    int sessionTimeoutMs = 30000;
    int heartbeatIntervalMs = 3000;
    // adjust auto commit interval lower than heartbeat so we don't need to deal with
    // a concurrent heartbeat request
    int autoCommitIntervalMs = 1000;
    Time time = new MockTime();
    Cluster cluster = TestUtils.singletonCluster(topic, 1);
    Node node = cluster.nodes().get(0);
    Metadata metadata = new Metadata(0, Long.MAX_VALUE);
    metadata.update(cluster, Collections.<String>emptySet(), time.milliseconds());
    MockClient client = new MockClient(time, metadata);
    client.setNode(node);
    PartitionAssignor assignor = new RoundRobinAssignor();
    final KafkaConsumer<String, String> consumer = newConsumer(time, client, metadata, assignor, rebalanceTimeoutMs, sessionTimeoutMs, heartbeatIntervalMs, true, autoCommitIntervalMs);
    consumer.subscribe(Arrays.asList(topic), getConsumerRebalanceListener(consumer));
    Node coordinator = prepareRebalance(client, node, assignor, Arrays.asList(tp0), null);
    consumer.poll(0);
    // respond to the outstanding fetch so that we have data available on the next poll
    client.respondFrom(fetchResponse(tp0, 0, 5), node);
    client.poll(0, time.milliseconds());
    time.sleep(autoCommitIntervalMs);
    client.prepareResponseFrom(fetchResponse(tp0, 5, 0), node);
    // no data has been returned to the user yet, so the committed offset should be 0
    AtomicBoolean commitReceived = prepareOffsetCommitResponse(client, coordinator, tp0, 0);
    consumer.poll(0);
    assertTrue(commitReceived.get());
}