Examples with ObserveHandle cz.o2.proxima.direct.commitlog.ObserveHandle used on opensource projects

Example 6 with ObserveHandle

use of cz.o2.proxima.direct.commitlog.ObserveHandle 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 7 with ObserveHandle

use of cz.o2.proxima.direct.commitlog.ObserveHandle in project proxima-platform by O2-Czech-Republic.

the class LocalKafkaCommitLogDescriptorTest method testObserveSuccess.

@Test(timeout = 10000)
public void testObserveSuccess() throws InterruptedException {
    Accessor accessor = kafka.createAccessor(direct, createTestFamily(entity, storageUri, partitionsCfg(3)));
    LocalKafkaWriter writer = accessor.newWriter();
    CommitLogReader reader = Optionals.get(accessor.getCommitLogReader(context()));
    final CountDownLatch latch = new CountDownLatch(2);
    final StreamElement update = StreamElement.upsert(entity, attr, UUID.randomUUID().toString(), "key", attr.getName(), System.currentTimeMillis(), new byte[] { 1, 2 });
    final ObserveHandle handle = reader.observe("test", Position.NEWEST, new CommitLogObserver() {

        @Override
        public boolean onNext(StreamElement ingest, OnNextContext context) {
            context.confirm();
            latch.countDown();
            return true;
        }

        @Override
        public void onCompleted() {
            fail("This should not be called");
        }

        @Override
        public boolean onError(Throwable error) {
            throw new RuntimeException(error);
        }
    });
    writer.write(update, (succ, e) -> {
        assertTrue(succ);
        latch.countDown();
    });
    latch.await();
    assertEquals(3, handle.getCommittedOffsets().size());
    long sum = handle.getCommittedOffsets().stream().mapToLong(o -> {
        TopicOffset tpo = (TopicOffset) o;
        assertTrue(tpo.getOffset() <= 1);
        return tpo.getOffset();
    }).sum();
    // single partition has committed one element
    assertEquals(1, sum);
}

Example 8 with ObserveHandle

use of cz.o2.proxima.direct.commitlog.ObserveHandle in project proxima-platform by O2-Czech-Republic.

the class LocalKafkaCommitLogDescriptorTest method testCurrentOffsetsReflectSeek.

@Test(timeout = 60000)
public void testCurrentOffsetsReflectSeek() throws InterruptedException {
    final Accessor accessor = kafka.createAccessor(direct, createTestFamily(entity, storageUri, partitionsCfg(3)));
    final CommitLogReader reader = Optionals.get(accessor.getCommitLogReader(context()));
    final LocalKafkaWriter writer = accessor.newWriter();
    final CountDownLatch latch = new CountDownLatch(10);
    final StreamElement update = StreamElement.upsert(entity, attr, UUID.randomUUID().toString(), "key", attr.getName(), System.currentTimeMillis(), new byte[] { 1, 2 });
    for (int i = 0; i < 10; i++) {
        writer.write(update, (succ, exc) -> latch.countDown());
    }
    latch.await();
    ObserveHandle handle = reader.observe("name", Position.OLDEST, new CommitLogObserver() {

        @Override
        public boolean onError(Throwable error) {
            return false;
        }

        @Override
        public boolean onNext(StreamElement ingest, OnNextContext context) {
            return false;
        }
    });
    handle.waitUntilReady();
    handle.close();
    assertEquals(3, handle.getCurrentOffsets().size());
    assertEquals(0, handle.getCurrentOffsets().stream().mapToLong(o -> ((TopicOffset) o).getOffset()).filter(o -> o >= 0).sum());
}

Example 9 with ObserveHandle

use of cz.o2.proxima.direct.commitlog.ObserveHandle in project proxima-platform by O2-Czech-Republic.

the class LocalKafkaCommitLogDescriptorTest method testObserveBulkCommitsCorrectly.

@Test(timeout = 10000)
public void testObserveBulkCommitsCorrectly() throws InterruptedException {
    Accessor accessor = kafka.createAccessor(direct, createTestFamily(entity, storageUri, cfg(Pair.of(KafkaAccessor.ASSIGNMENT_TIMEOUT_MS, 1L), Pair.of(LocalKafkaCommitLogDescriptor.CFG_NUM_PARTITIONS, 3))));
    LocalKafkaWriter writer = accessor.newWriter();
    CommitLogReader reader = Optionals.get(accessor.getCommitLogReader(context()));
    long now = System.currentTimeMillis();
    for (int i = 0; i < 100; i++) {
        StreamElement update = StreamElement.upsert(entity, attr, UUID.randomUUID().toString(), "key-" + i, attr.getName(), now + 2000, new byte[] { 1, 2 });
        // then we write single element
        writer.write(update, (succ, e) -> {
        });
    }
    CountDownLatch latch = new CountDownLatch(1);
    ObserveHandle handle = reader.observeBulk("test", Position.OLDEST, true, new CommitLogObserver() {

        int processed = 0;

        @Override
        public boolean onNext(StreamElement ingest, OnNextContext context) {
            if (++processed == 100) {
                context.confirm();
            }
            return true;
        }

        @Override
        public void onCompleted() {
            latch.countDown();
        }

        @Override
        public boolean onError(Throwable error) {
            throw new RuntimeException(error);
        }
    });
    latch.await();
    long offsetSum = handle.getCommittedOffsets().stream().mapToLong(o -> ((TopicOffset) o).getOffset()).sum();
    assertEquals(100, offsetSum);
    KafkaConsumer<Object, Object> consumer = ((LocalKafkaCommitLogDescriptor.LocalKafkaLogReader) reader).getConsumer();
    String topic = accessor.getTopic();
    assertEquals(100, consumer.committed(handle.getCommittedOffsets().stream().map(o -> new TopicPartition(topic, o.getPartition().getId())).collect(Collectors.toSet())).values().stream().mapToLong(OffsetAndMetadata::offset).sum());
}

Example 10 with ObserveHandle

use of cz.o2.proxima.direct.commitlog.ObserveHandle in project proxima-platform by O2-Czech-Republic.

the class LocalKafkaCommitLogDescriptorTest method testObserveWithException.

@Test(timeout = 10000)
public void testObserveWithException() throws InterruptedException {
    Accessor accessor = kafka.createAccessor(direct, createTestFamily(entity, storageUri, partitionsCfg(3)));
    LocalKafkaWriter writer = accessor.newWriter();
    CommitLogReader reader = Optionals.get(accessor.getCommitLogReader(context()));
    final AtomicInteger restarts = new AtomicInteger();
    final AtomicReference<Throwable> exc = new AtomicReference<>();
    final CountDownLatch latch = new CountDownLatch(2);
    final StreamElement update = StreamElement.upsert(entity, attr, UUID.randomUUID().toString(), "key", attr.getName(), System.currentTimeMillis(), new byte[] { 1, 2 });
    final ObserveHandle handle = reader.observe("test", Position.NEWEST, new CommitLogObserver() {

        @Override
        public boolean onNext(StreamElement ingest, OnNextContext context) {
            restarts.incrementAndGet();
            throw new RuntimeException("FAIL!");
        }

        @Override
        public void onCompleted() {
            fail("This should not be called");
        }

        @Override
        public boolean onError(Throwable error) {
            exc.set(error);
            latch.countDown();
            throw new RuntimeException(error);
        }
    });
    writer.write(update, (succ, e) -> {
        assertTrue(succ);
        latch.countDown();
    });
    latch.await();
    assertEquals("FAIL!", exc.get().getMessage());
    assertEquals(1, restarts.get());
    assertEquals(3, handle.getCommittedOffsets().size());
    List<Long> startedOffsets = handle.getCurrentOffsets().stream().map(o -> ((TopicOffset) o).getOffset()).filter(o -> o >= 0).collect(Collectors.toList());
    assertEquals(Collections.singletonList(0L), startedOffsets);
}