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

Example 11 with MockConsumer

use of org.apache.kafka.clients.consumer.MockConsumer in project apache-kafka-on-k8s by banzaicloud.

the class AbstractTaskTest method shouldThrowProcessorStateExceptionOnInitializeOffsetsWhenKafkaException.

@Test(expected = ProcessorStateException.class)
public void shouldThrowProcessorStateExceptionOnInitializeOffsetsWhenKafkaException() {
    final Consumer consumer = mockConsumer(new KafkaException("blah"));
    final AbstractTask task = createTask(consumer, Collections.<StateStore, String>emptyMap());
    task.updateOffsetLimits();
}

Example 12 with MockConsumer

use of org.apache.kafka.clients.consumer.MockConsumer in project apache-kafka-on-k8s by banzaicloud.

the class AbstractTaskTest method shouldThrowWakeupExceptionOnInitializeOffsetsWhenWakeupException.

@Test(expected = WakeupException.class)
public void shouldThrowWakeupExceptionOnInitializeOffsetsWhenWakeupException() {
    final Consumer consumer = mockConsumer(new WakeupException());
    final AbstractTask task = createTask(consumer, Collections.<StateStore, String>emptyMap());
    task.updateOffsetLimits();
}

Example 13 with MockConsumer

use of org.apache.kafka.clients.consumer.MockConsumer in project core-ng-project by neowu.

the class MockKafka method consumer.

@Override
public Consumer<String, byte[]> consumer(String group, Set<String> topics) {
    MockConsumer<String, byte[]> consumer = new MockConsumer<>(OffsetResetStrategy.EARLIEST);
    List<TopicPartition> assignments = Lists.newArrayList();
    Map<TopicPartition, Long> offsets = Maps.newHashMap();
    for (String topic : topics) {
        assignments.add(new TopicPartition(topic, 0));
        offsets.put(new TopicPartition("topic", 0), 0L);
    }
    consumer.assign(assignments);
    consumer.updateBeginningOffsets(offsets);
    return consumer;
}

Example 14 with MockConsumer

use of org.apache.kafka.clients.consumer.MockConsumer in project kafka by apache.

the class StreamThreadTest method shouldReturnActiveTaskMetadataWhileRunningState.

@Test
public void shouldReturnActiveTaskMetadataWhileRunningState() {
    internalTopologyBuilder.addSource(null, "source", null, null, null, topic1);
    clientSupplier.setCluster(createCluster());
    final StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(metrics, APPLICATION_ID, config.getString(StreamsConfig.BUILT_IN_METRICS_VERSION_CONFIG), mockTime);
    final TopologyMetadata topologyMetadata = new TopologyMetadata(internalTopologyBuilder, config);
    topologyMetadata.buildAndRewriteTopology();
    final StreamThread thread = StreamThread.create(topologyMetadata, config, clientSupplier, clientSupplier.getAdmin(config.getAdminConfigs(CLIENT_ID)), PROCESS_ID, CLIENT_ID, streamsMetrics, mockTime, streamsMetadataState, 0, stateDirectory, new MockStateRestoreListener(), threadIdx, null, HANDLER);
    thread.setState(StreamThread.State.STARTING);
    thread.rebalanceListener().onPartitionsRevoked(Collections.emptySet());
    final Map<TaskId, Set<TopicPartition>> activeTasks = new HashMap<>();
    final List<TopicPartition> assignedPartitions = new ArrayList<>();
    // assign single partition
    assignedPartitions.add(t1p1);
    activeTasks.put(task1, Collections.singleton(t1p1));
    thread.taskManager().handleAssignment(activeTasks, emptyMap());
    final MockConsumer<byte[], byte[]> mockConsumer = (MockConsumer<byte[], byte[]>) thread.mainConsumer();
    mockConsumer.assign(assignedPartitions);
    mockConsumer.updateBeginningOffsets(Collections.singletonMap(t1p1, 0L));
    thread.rebalanceListener().onPartitionsAssigned(assignedPartitions);
    thread.runOnce();
    final ThreadMetadata metadata = thread.threadMetadata();
    assertEquals(StreamThread.State.RUNNING.name(), metadata.threadState());
    assertTrue(metadata.activeTasks().contains(new TaskMetadataImpl(task1, Utils.mkSet(t1p1), new HashMap<>(), new HashMap<>(), Optional.empty())));
    assertTrue(metadata.standbyTasks().isEmpty());
    assertTrue("#threadState() was: " + metadata.threadState() + "; expected either RUNNING, STARTING, PARTITIONS_REVOKED, PARTITIONS_ASSIGNED, or CREATED", Arrays.asList("RUNNING", "STARTING", "PARTITIONS_REVOKED", "PARTITIONS_ASSIGNED", "CREATED").contains(metadata.threadState()));
    final String threadName = metadata.threadName();
    assertThat(threadName, startsWith(CLIENT_ID + "-StreamThread-" + threadIdx));
    assertEquals(threadName + "-consumer", metadata.consumerClientId());
    assertEquals(threadName + "-restore-consumer", metadata.restoreConsumerClientId());
    assertEquals(Collections.singleton(threadName + "-producer"), metadata.producerClientIds());
    assertEquals(CLIENT_ID + "-admin", metadata.adminClientId());
}

Example 15 with MockConsumer

use of org.apache.kafka.clients.consumer.MockConsumer in project kafka by apache.

the class StreamThreadTest method shouldNotReturnDataAfterTaskMigrated.

@Test
public void shouldNotReturnDataAfterTaskMigrated() {
    final TaskManager taskManager = EasyMock.createNiceMock(TaskManager.class);
    expect(taskManager.producerClientIds()).andStubReturn(Collections.emptySet());
    final InternalTopologyBuilder internalTopologyBuilder = EasyMock.createNiceMock(InternalTopologyBuilder.class);
    expect(internalTopologyBuilder.fullSourceTopicNames()).andReturn(Collections.singletonList(topic1)).times(2);
    final MockConsumer<byte[], byte[]> consumer = new MockConsumer<>(OffsetResetStrategy.LATEST);
    consumer.subscribe(Collections.singletonList(topic1), new MockRebalanceListener());
    consumer.rebalance(Collections.singletonList(t1p1));
    consumer.updateEndOffsets(Collections.singletonMap(t1p1, 10L));
    consumer.seekToEnd(Collections.singletonList(t1p1));
    final ChangelogReader changelogReader = new MockChangelogReader() {

        @Override
        public void restore(final Map<TaskId, Task> tasks) {
            consumer.addRecord(new ConsumerRecord<>(topic1, 1, 11, new byte[0], new byte[0]));
            consumer.addRecord(new ConsumerRecord<>(topic1, 1, 12, new byte[1], new byte[0]));
            throw new TaskMigratedException("Changelog restore found task migrated", new RuntimeException("restore task migrated"));
        }
    };
    taskManager.handleLostAll();
    EasyMock.replay(taskManager, internalTopologyBuilder);
    final StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(metrics, CLIENT_ID, StreamsConfig.METRICS_LATEST, mockTime);
    final StreamThread thread = new StreamThread(mockTime, config, null, consumer, consumer, changelogReader, null, taskManager, streamsMetrics, new TopologyMetadata(internalTopologyBuilder, config), CLIENT_ID, new LogContext(""), new AtomicInteger(), new AtomicLong(Long.MAX_VALUE), new LinkedList<>(), null, HANDLER, null).updateThreadMetadata(getSharedAdminClientId(CLIENT_ID));
    final StreamsException thrown = assertThrows(StreamsException.class, thread::run);
    verify(taskManager);
    assertThat(thrown.getCause(), isA(IllegalStateException.class));
    // The Mock consumer shall throw as the assignment has been wiped out, but records are assigned.
    assertEquals("No current assignment for partition topic1-1", thrown.getCause().getMessage());
    assertFalse(consumer.shouldRebalance());
}