Examples with MockTime org.apache.kafka.common.utils.MockTime used on opensource projects

Example 76 with MockTime

use of org.apache.kafka.common.utils.MockTime in project kafka by apache.

the class KafkaConsumerTest method testMeasureCommittedDuration.

@Test
public void testMeasureCommittedDuration() {
    long offset1 = 10000;
    Time time = new MockTime(Duration.ofSeconds(1).toMillis());
    SubscriptionState subscription = new SubscriptionState(new LogContext(), OffsetResetStrategy.EARLIEST);
    ConsumerMetadata metadata = createMetadata(subscription);
    MockClient client = new MockClient(time, metadata);
    initMetadata(client, Collections.singletonMap(topic, 2));
    Node node = metadata.fetch().nodes().get(0);
    KafkaConsumer<String, String> consumer = newConsumer(time, client, subscription, metadata, assignor, true, groupInstanceId);
    consumer.assign(singletonList(tp0));
    // lookup coordinator
    client.prepareResponseFrom(FindCoordinatorResponse.prepareResponse(Errors.NONE, groupId, 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);
    consumer.committed(Collections.singleton(tp0)).get(tp0).offset();
    final Metric metric = consumer.metrics().get(consumer.metrics.metricName("committed-time-ns-total", "consumer-metrics"));
    assertTrue((Double) metric.metricValue() >= Duration.ofMillis(999).toNanos());
}

Example 77 with MockTime

use of org.apache.kafka.common.utils.MockTime in project kafka by apache.

the class KafkaConsumerTest method testClosingConsumerUnregistersConsumerMetrics.

@Test
public void testClosingConsumerUnregistersConsumerMetrics() {
    Time time = new MockTime(1L);
    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, new RoundRobinAssignor(), true, groupInstanceId);
    consumer.subscribe(singletonList(topic));
    assertTrue(consumerMetricPresent(consumer, "last-poll-seconds-ago"));
    assertTrue(consumerMetricPresent(consumer, "time-between-poll-avg"));
    assertTrue(consumerMetricPresent(consumer, "time-between-poll-max"));
    consumer.close();
    assertFalse(consumerMetricPresent(consumer, "last-poll-seconds-ago"));
    assertFalse(consumerMetricPresent(consumer, "time-between-poll-avg"));
    assertFalse(consumerMetricPresent(consumer, "time-between-poll-max"));
}

Example 78 with MockTime

use of org.apache.kafka.common.utils.MockTime 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 79 with MockTime

use of org.apache.kafka.common.utils.MockTime in project kafka by apache.

the class RetryTest method test.

@Test
public void test() throws ExecutionException {
    Exception[] attempts = new Exception[] { new IOException("pretend connect error"), new IOException("pretend timeout error"), new IOException("pretend read error"), // success!
    null };
    long retryWaitMs = 1000;
    long maxWaitMs = 10000;
    Retryable<String> call = createRetryable(attempts);
    Time time = new MockTime(0, 0, 0);
    assertEquals(0L, time.milliseconds());
    Retry<String> r = new Retry<>(time, retryWaitMs, maxWaitMs);
    r.execute(call);
    long secondWait = retryWaitMs * 2;
    long thirdWait = retryWaitMs * 4;
    long totalWait = retryWaitMs + secondWait + thirdWait;
    assertEquals(totalWait, time.milliseconds());
}

Example 80 with MockTime

use of org.apache.kafka.common.utils.MockTime in project kafka by apache.

the class RetryTest method testIOExceptionFailure.

@Test
public void testIOExceptionFailure() {
    Exception[] attempts = new Exception[] { new IOException("pretend connect error"), new IOException("pretend timeout error"), new IOException("pretend read error"), new IOException("pretend another read error") };
    long retryWaitMs = 1000;
    long maxWaitMs = 1000 + 2000 + 3999;
    Retryable<String> call = createRetryable(attempts);
    Time time = new MockTime(0, 0, 0);
    assertEquals(0L, time.milliseconds());
    Retry<String> r = new Retry<>(time, retryWaitMs, maxWaitMs);
    assertThrows(ExecutionException.class, () -> r.execute(call));
    assertEquals(maxWaitMs, time.milliseconds());
}