Examples with LocalKafkaLogReader cz.o2.proxima.direct.kafka.LocalKafkaCommitLogDescriptor.LocalKafkaLogReader used on opensource projects

Example 1 with LocalKafkaLogReader

use of cz.o2.proxima.direct.kafka.LocalKafkaCommitLogDescriptor.LocalKafkaLogReader in project proxima-platform by O2-Czech-Republic.

the class LocalKafkaCommitLogDescriptorTest method testHandleRebalanceInProgressException.

@Test(timeout = 10000)
public void testHandleRebalanceInProgressException() throws InterruptedException {
    final AtomicInteger invokedCount = new AtomicInteger();
    final int numElements = 2000;
    final LocalKafkaCommitLogDescriptor descriptor = new LocalKafkaCommitLogDescriptor() {

        @Override
        public Accessor createAccessor(DirectDataOperator direct, AttributeFamilyDescriptor family) {
            return new Accessor(family.getEntity(), family.getStorageUri(), family.getCfg(), id) {

                @Override
                <K, V> KafkaConsumer<K, V> mockKafkaConsumer(String name, ConsumerGroup group, ElementSerializer<K, V> serializer, @Nullable Collection<Partition> assignedPartitions, @Nullable ConsumerRebalanceListener listener) {
                    final Map<TopicPartition, OffsetAndMetadata> committed = new HashMap<>();
                    KafkaConsumer<K, V> mock = super.mockKafkaConsumer(name, group, serializer, assignedPartitions, listener);
                    doAnswer(invocationOnMock -> {
                        if (invokedCount.getAndIncrement() == 1) {
                            throw new RebalanceInProgressException();
                        }
                        Map<TopicPartition, OffsetAndMetadata> toCommit = invocationOnMock.getArgument(0);
                        committed.putAll(toCommit);
                        return null;
                    }).when(mock).commitSync(anyMap());
                    doAnswer(invocationOnMock -> {
                        Set<TopicPartition> parts = invocationOnMock.getArgument(0);
                        return parts.stream().map(tp -> Pair.of(tp, committed.get(tp))).filter(p -> p.getSecond() != null).collect(Collectors.toMap(Pair::getFirst, Pair::getSecond));
                    }).when(mock).committed(anySet());
                    return mock;
                }
            };
        }
    };
    Accessor accessor = descriptor.createAccessor(direct, createTestFamily(entity, storageUri, partitionsCfg(1)));
    LocalKafkaLogReader reader = accessor.newReader(direct.getContext());
    Map<String, StreamElement> observedAfterRepartition = new HashMap<>();
    LocalKafkaWriter<?, ?> writer = accessor.newWriter();
    CountDownLatch latch = new CountDownLatch(1);
    try (ObserveHandle handle = reader.observe("dummy", new CommitLogObserver() {

        @Override
        public boolean onNext(StreamElement ingest, OnNextContext context) {
            observedAfterRepartition.put(ingest.getKey(), ingest);
            context.confirm();
            if (ingest.getKey().equals("last-key")) {
                latch.countDown();
                return false;
            }
            return true;
        }

        @Override
        public boolean onError(Throwable error) {
            return false;
        }
    })) {
        for (int i = 0; i < numElements; i++) {
            writer.write(StreamElement.upsert(entity, attr, UUID.randomUUID().toString(), "key" + i, attr.getName(), System.currentTimeMillis(), new byte[] {}), (succ, exc) -> {
            });
        }
        writer.write(StreamElement.upsert(entity, attr, UUID.randomUUID().toString(), "last-key", attr.getName(), System.currentTimeMillis(), new byte[] {}), (succ, exc) -> {
        });
        latch.await();
    }
    assertEquals(numElements + 1, observedAfterRepartition.size());
    assertTrue(invokedCount.get() > 1);
}

Example 2 with LocalKafkaLogReader

use of cz.o2.proxima.direct.kafka.LocalKafkaCommitLogDescriptor.LocalKafkaLogReader in project proxima-platform by O2-Czech-Republic.

the class LocalKafkaCommitLogDescriptorTest method testFailedPollDoesNotDeadlock.

@Test(timeout = 10000)
public void testFailedPollDoesNotDeadlock() throws InterruptedException {
    final LocalKafkaCommitLogDescriptor descriptor = new LocalKafkaCommitLogDescriptor() {

        @Override
        public Accessor createAccessor(DirectDataOperator direct, AttributeFamilyDescriptor family) {
            return new Accessor(family.getEntity(), family.getStorageUri(), family.getCfg(), id) {

                @Override
                <K, V> KafkaConsumer<K, V> mockKafkaConsumer(String name, ConsumerGroup group, ElementSerializer<K, V> serializer, @Nullable Collection<Partition> assignedPartitions, @Nullable ConsumerRebalanceListener listener) {
                    KafkaConsumer<K, V> mock = super.mockKafkaConsumer(name, group, serializer, assignedPartitions, listener);
                    doThrow(new RuntimeException("Failed poll")).when(mock).poll(any());
                    return mock;
                }
            };
        }
    };
    Accessor accessor = descriptor.createAccessor(direct, createTestFamily(entity, storageUri, partitionsCfg(1)));
    LocalKafkaLogReader reader = accessor.newReader(direct.getContext());
    ObserveHandle handle = reader.observe("dummy", new CommitLogObserver() {

        @Override
        public boolean onNext(StreamElement ingest, OnNextContext context) {
            return false;
        }

        @Override
        public boolean onError(Throwable error) {
            return false;
        }
    });
    handle.waitUntilReady();
    handle.close();
}

Example 3 with LocalKafkaLogReader

use of cz.o2.proxima.direct.kafka.LocalKafkaCommitLogDescriptor.LocalKafkaLogReader in project proxima-platform by O2-Czech-Republic.

the class LocalKafkaCommitLogDescriptorTest method testObserveOnNonExistingTopic.

@Test
public void testObserveOnNonExistingTopic() {
    Accessor accessor = kafka.createAccessor(direct, createTestFamily(entity, storageUri, partitionsCfg(3)));
    LocalKafkaLogReader reader = accessor.newReader(context());
    try {
        // need this to initialize the consumer
        assertNotNull(reader.getPartitions());
        reader.validateTopic(reader.getConsumer(), "non-existing-topic");
        fail("Should throw exception");
    } catch (IllegalArgumentException ex) {
        assertEquals("Received null or empty partitions for topic [non-existing-topic]. " + "Please check that the topic exists and has at least one partition.", ex.getMessage());
        return;
    }
    fail("Should throw IllegalArgumentException");
}