Examples with StreamCutImpl io.pravega.client.stream.impl.StreamCutImpl used on opensource projects

Example 11 with StreamCutImpl

use of io.pravega.client.stream.impl.StreamCutImpl in project pravega by pravega.

the class WatermarkingTest method watermarkTest.

@Test(timeout = 120000)
public void watermarkTest() throws Exception {
    Controller controller = PRAVEGA.getLocalController();
    String scope = "scope";
    String stream = "watermarkTest";
    StreamConfiguration config = StreamConfiguration.builder().scalingPolicy(ScalingPolicy.fixed(5)).build();
    ClientConfig clientConfig = ClientConfig.builder().controllerURI(PRAVEGA.getControllerURI()).build();
    @Cleanup StreamManager streamManager = StreamManager.create(clientConfig);
    streamManager.createScope(scope);
    streamManager.createStream(scope, stream, config);
    Stream streamObj = Stream.of(scope, stream);
    // create 2 writers
    @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope(scope, clientConfig);
    JavaSerializer<Long> javaSerializer = new JavaSerializer<>();
    @Cleanup EventStreamWriter<Long> writer1 = clientFactory.createEventWriter(stream, javaSerializer, EventWriterConfig.builder().build());
    @Cleanup EventStreamWriter<Long> writer2 = clientFactory.createEventWriter(stream, javaSerializer, EventWriterConfig.builder().build());
    AtomicBoolean stopFlag = new AtomicBoolean(false);
    // write events
    CompletableFuture<Void> writer1Future = writeEvents(writer1, stopFlag);
    CompletableFuture<Void> writer2Future = writeEvents(writer2, stopFlag);
    // scale the stream several times so that we get complex positions
    scale(controller, streamObj, config);
    @Cleanup ConnectionFactory connectionFactory = new SocketConnectionFactoryImpl(clientConfig);
    @Cleanup ClientFactoryImpl syncClientFactory = new ClientFactoryImpl(scope, new ControllerImpl(ControllerImplConfig.builder().clientConfig(clientConfig).build(), connectionFactory.getInternalExecutor()), connectionFactory);
    String markStream = NameUtils.getMarkStreamForStream(stream);
    @Cleanup RevisionedStreamClient<Watermark> watermarkReader = syncClientFactory.createRevisionedStreamClient(markStream, new WatermarkSerializer(), SynchronizerConfig.builder().build());
    LinkedBlockingQueue<Watermark> watermarks = new LinkedBlockingQueue<>();
    fetchWatermarks(watermarkReader, watermarks, stopFlag);
    AssertExtensions.assertEventuallyEquals(true, () -> watermarks.size() >= 2, 100000);
    stopFlag.set(true);
    writer1Future.join();
    writer2Future.join();
    // read events from the stream
    @Cleanup ReaderGroupManager readerGroupManager = new ReaderGroupManagerImpl(scope, controller, syncClientFactory);
    Watermark watermark0 = watermarks.take();
    Watermark watermark1 = watermarks.take();
    assertTrue(watermark0.getLowerTimeBound() <= watermark0.getUpperTimeBound());
    assertTrue(watermark1.getLowerTimeBound() <= watermark1.getUpperTimeBound());
    assertTrue(watermark0.getLowerTimeBound() < watermark1.getLowerTimeBound());
    Map<Segment, Long> positionMap0 = watermark0.getStreamCut().entrySet().stream().collect(Collectors.toMap(x -> new Segment(scope, stream, x.getKey().getSegmentId()), Map.Entry::getValue));
    Map<Segment, Long> positionMap1 = watermark1.getStreamCut().entrySet().stream().collect(Collectors.toMap(x -> new Segment(scope, stream, x.getKey().getSegmentId()), Map.Entry::getValue));
    StreamCut streamCutFirst = new StreamCutImpl(streamObj, positionMap0);
    StreamCut streamCutSecond = new StreamCutImpl(streamObj, positionMap1);
    Map<Stream, StreamCut> firstMarkStreamCut = Collections.singletonMap(streamObj, streamCutFirst);
    Map<Stream, StreamCut> secondMarkStreamCut = Collections.singletonMap(streamObj, streamCutSecond);
    // read from stream cut of first watermark
    String readerGroup = "watermarkTest-group";
    readerGroupManager.createReaderGroup(readerGroup, ReaderGroupConfig.builder().stream(streamObj).startingStreamCuts(firstMarkStreamCut).endingStreamCuts(secondMarkStreamCut).disableAutomaticCheckpoints().build());
    @Cleanup final EventStreamReader<Long> reader = clientFactory.createReader("myreader", readerGroup, javaSerializer, ReaderConfig.builder().build());
    EventRead<Long> event = reader.readNextEvent(10000L);
    TimeWindow currentTimeWindow = reader.getCurrentTimeWindow(streamObj);
    while (event.getEvent() != null && currentTimeWindow.getLowerTimeBound() == null && currentTimeWindow.getUpperTimeBound() == null) {
        event = reader.readNextEvent(10000L);
        currentTimeWindow = reader.getCurrentTimeWindow(streamObj);
    }
    assertNotNull(currentTimeWindow.getUpperTimeBound());
    // read all events and verify that all events are below the bounds
    while (event.getEvent() != null) {
        Long time = event.getEvent();
        log.info("timewindow = {} event = {}", currentTimeWindow, time);
        assertTrue(currentTimeWindow.getLowerTimeBound() == null || time >= currentTimeWindow.getLowerTimeBound());
        assertTrue(currentTimeWindow.getUpperTimeBound() == null || time <= currentTimeWindow.getUpperTimeBound());
        TimeWindow nextTimeWindow = reader.getCurrentTimeWindow(streamObj);
        assertTrue(currentTimeWindow.getLowerTimeBound() == null || nextTimeWindow.getLowerTimeBound() >= currentTimeWindow.getLowerTimeBound());
        assertTrue(currentTimeWindow.getUpperTimeBound() == null || nextTimeWindow.getUpperTimeBound() >= currentTimeWindow.getUpperTimeBound());
        currentTimeWindow = nextTimeWindow;
        event = reader.readNextEvent(10000L);
        if (event.isCheckpoint()) {
            event = reader.readNextEvent(10000L);
        }
    }
    assertNotNull(currentTimeWindow.getLowerTimeBound());
}

Example 12 with StreamCutImpl

use of io.pravega.client.stream.impl.StreamCutImpl in project pravega by pravega.

the class WatermarkingTest method watermarkTxnTest.

@Test(timeout = 120000)
public void watermarkTxnTest() throws Exception {
    Controller controller = PRAVEGA.getLocalController();
    String scope = "scopeTx";
    String stream = "watermarkTxnTest";
    ClientConfig clientConfig = ClientConfig.builder().controllerURI(PRAVEGA.getControllerURI()).build();
    StreamConfiguration config = StreamConfiguration.builder().scalingPolicy(ScalingPolicy.fixed(5)).build();
    @Cleanup StreamManager streamManager = StreamManager.create(clientConfig);
    streamManager.createScope(scope);
    streamManager.createStream(scope, stream, config);
    Stream streamObj = Stream.of(scope, stream);
    // create 2 writers
    @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope(scope, clientConfig);
    JavaSerializer<Long> javaSerializer = new JavaSerializer<>();
    @Cleanup TransactionalEventStreamWriter<Long> writer1 = clientFactory.createTransactionalEventWriter("writer1", stream, new JavaSerializer<>(), EventWriterConfig.builder().transactionTimeoutTime(10000).build());
    @Cleanup TransactionalEventStreamWriter<Long> writer2 = clientFactory.createTransactionalEventWriter("writer2", stream, new JavaSerializer<>(), EventWriterConfig.builder().transactionTimeoutTime(10000).build());
    AtomicBoolean stopFlag = new AtomicBoolean(false);
    // write events
    CompletableFuture<Void> writer1Future = writeTxEvents(writer1, stopFlag);
    CompletableFuture<Void> writer2Future = writeTxEvents(writer2, stopFlag);
    // scale the stream several times so that we get complex positions
    scale(controller, streamObj, config);
    @Cleanup ConnectionFactory connectionFactory = new SocketConnectionFactoryImpl(clientConfig);
    @Cleanup ClientFactoryImpl syncClientFactory = new ClientFactoryImpl(scope, new ControllerImpl(ControllerImplConfig.builder().clientConfig(clientConfig).build(), connectionFactory.getInternalExecutor()), connectionFactory);
    String markStream = NameUtils.getMarkStreamForStream(stream);
    @Cleanup RevisionedStreamClient<Watermark> watermarkReader = syncClientFactory.createRevisionedStreamClient(markStream, new WatermarkSerializer(), SynchronizerConfig.builder().build());
    LinkedBlockingQueue<Watermark> watermarks = new LinkedBlockingQueue<>();
    fetchWatermarks(watermarkReader, watermarks, stopFlag);
    AssertExtensions.assertEventuallyEquals(true, () -> watermarks.size() >= 2, 100000);
    stopFlag.set(true);
    writer1Future.join();
    writer2Future.join();
    // read events from the stream
    @Cleanup ReaderGroupManager readerGroupManager = new ReaderGroupManagerImpl(scope, controller, syncClientFactory);
    Watermark watermark0 = watermarks.take();
    Watermark watermark1 = watermarks.take();
    assertTrue(watermark0.getLowerTimeBound() <= watermark0.getUpperTimeBound());
    assertTrue(watermark1.getLowerTimeBound() <= watermark1.getUpperTimeBound());
    assertTrue(watermark0.getLowerTimeBound() < watermark1.getLowerTimeBound());
    Map<Segment, Long> positionMap0 = watermark0.getStreamCut().entrySet().stream().collect(Collectors.toMap(x -> new Segment(scope, stream, x.getKey().getSegmentId()), Map.Entry::getValue));
    Map<Segment, Long> positionMap1 = watermark1.getStreamCut().entrySet().stream().collect(Collectors.toMap(x -> new Segment(scope, stream, x.getKey().getSegmentId()), Map.Entry::getValue));
    StreamCut streamCutFirst = new StreamCutImpl(streamObj, positionMap0);
    StreamCut streamCutSecond = new StreamCutImpl(streamObj, positionMap1);
    Map<Stream, StreamCut> firstMarkStreamCut = Collections.singletonMap(streamObj, streamCutFirst);
    Map<Stream, StreamCut> secondMarkStreamCut = Collections.singletonMap(streamObj, streamCutSecond);
    // read from stream cut of first watermark
    String readerGroup = "watermarkTxnTest-group";
    readerGroupManager.createReaderGroup(readerGroup, ReaderGroupConfig.builder().stream(streamObj).startingStreamCuts(firstMarkStreamCut).endingStreamCuts(secondMarkStreamCut).disableAutomaticCheckpoints().build());
    @Cleanup final EventStreamReader<Long> reader = clientFactory.createReader("myreaderTx", readerGroup, javaSerializer, ReaderConfig.builder().build());
    EventRead<Long> event = reader.readNextEvent(10000L);
    TimeWindow currentTimeWindow = reader.getCurrentTimeWindow(streamObj);
    while (event.getEvent() != null && currentTimeWindow.getLowerTimeBound() == null && currentTimeWindow.getUpperTimeBound() == null) {
        event = reader.readNextEvent(10000L);
        currentTimeWindow = reader.getCurrentTimeWindow(streamObj);
    }
    assertNotNull(currentTimeWindow.getUpperTimeBound());
    // read all events and verify that all events are below the bounds
    while (event.getEvent() != null) {
        Long time = event.getEvent();
        log.info("timewindow = {} event = {}", currentTimeWindow, time);
        assertTrue(currentTimeWindow.getLowerTimeBound() == null || time >= currentTimeWindow.getLowerTimeBound());
        assertTrue(currentTimeWindow.getUpperTimeBound() == null || time <= currentTimeWindow.getUpperTimeBound());
        TimeWindow nextTimeWindow = reader.getCurrentTimeWindow(streamObj);
        assertTrue(currentTimeWindow.getLowerTimeBound() == null || nextTimeWindow.getLowerTimeBound() >= currentTimeWindow.getLowerTimeBound());
        assertTrue(currentTimeWindow.getUpperTimeBound() == null || nextTimeWindow.getUpperTimeBound() >= currentTimeWindow.getUpperTimeBound());
        currentTimeWindow = nextTimeWindow;
        event = reader.readNextEvent(10000L);
        if (event.isCheckpoint()) {
            event = reader.readNextEvent(10000L);
        }
    }
    assertNotNull(currentTimeWindow.getLowerTimeBound());
}

Example 13 with StreamCutImpl

use of io.pravega.client.stream.impl.StreamCutImpl in project pravega by pravega.

the class BatchClientTest method testBatchClientWithStreamTruncation.

@Test(timeout = 50000)
@SuppressWarnings("deprecation")
public void testBatchClientWithStreamTruncation() throws InterruptedException, ExecutionException {
    @Cleanup StreamManager streamManager = StreamManager.create(clientConfig);
    @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope(SCOPE, clientConfig);
    createTestStreamWithEvents(clientFactory);
    log.info("Done creating a test stream with test events");
    @Cleanup BatchClientFactory batchClient = BatchClientFactory.withScope(SCOPE, clientConfig);
    log.info("Done creating batch client factory");
    // 1. Create a StreamCut after 2 events(offset = 2 * 30 = 60).
    StreamCut streamCut60L = new StreamCutImpl(Stream.of(SCOPE, STREAM), ImmutableMap.of(new Segment(SCOPE, STREAM, 0), 60L));
    // 2. Truncate stream.
    assertTrue("truncate stream", controllerWrapper.getController().truncateStream(SCOPE, STREAM, streamCut60L).join());
    // 3a. Fetch Segments using StreamCut.UNBOUNDED>
    ArrayList<SegmentRange> segmentsPostTruncation1 = Lists.newArrayList(batchClient.getSegments(Stream.of(SCOPE, STREAM), StreamCut.UNBOUNDED, StreamCut.UNBOUNDED).getIterator());
    // 3b. Fetch Segments using getStreamInfo() api.
    StreamInfo streamInfo = streamManager.getStreamInfo(SCOPE, STREAM);
    ArrayList<SegmentRange> segmentsPostTruncation2 = Lists.newArrayList(batchClient.getSegments(Stream.of(SCOPE, STREAM), streamInfo.getHeadStreamCut(), streamInfo.getTailStreamCut()).getIterator());
    // Validate results.
    validateSegmentCountAndEventCount(batchClient, segmentsPostTruncation1);
    validateSegmentCountAndEventCount(batchClient, segmentsPostTruncation2);
}

Example 14 with StreamCutImpl

use of io.pravega.client.stream.impl.StreamCutImpl in project pravega by pravega.

the class BatchClientTest method testBatchClientWithStreamTruncationPostGetSegments.

@Test(expected = TruncatedDataException.class, timeout = 50000)
public void testBatchClientWithStreamTruncationPostGetSegments() throws InterruptedException, ExecutionException {
    @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope(SCOPE, clientConfig);
    createTestStreamWithEvents(clientFactory);
    @Cleanup BatchClientFactory batchClient = BatchClientFactory.withScope(SCOPE, clientConfig);
    // 1. Fetch Segments.
    ArrayList<SegmentRange> segmentsPostTruncation = Lists.newArrayList(batchClient.getSegments(Stream.of(SCOPE, STREAM), StreamCut.UNBOUNDED, StreamCut.UNBOUNDED).getIterator());
    // 2. Create a StreamCut at the end of segment 0 ( offset = 3 * 30 = 90)
    StreamCut streamCut90L = new StreamCutImpl(Stream.of(SCOPE, STREAM), ImmutableMap.of(new Segment(SCOPE, STREAM, 0), 90L));
    // 3. Truncate stream.
    assertTrue("truncate stream", controllerWrapper.getController().truncateStream(SCOPE, STREAM, streamCut90L).join());
    // 4. Use SegmentRange obtained before truncation.
    SegmentRange s0 = segmentsPostTruncation.stream().filter(segmentRange -> segmentRange.getSegmentId() == 0L).findFirst().get();
    // 5. Read non existent segment.
    List<String> eventList = new ArrayList<>();
    @Cleanup SegmentIterator<String> segmentIterator = batchClient.readSegment(s0, serializer);
    eventList.addAll(Lists.newArrayList(segmentIterator));
}

Example 15 with StreamCutImpl

use of io.pravega.client.stream.impl.StreamCutImpl in project pravega by pravega.

the class WatermarkingTest method watermarkingTests.

@Test
public void watermarkingTests() throws Exception {
    final ClientConfig clientConfig = Utils.buildClientConfig(controllerURI);
    @Cleanup ConnectionFactory connectionFactory = new SocketConnectionFactoryImpl(clientConfig);
    ControllerImpl controller = new ControllerImpl(ControllerImplConfig.builder().clientConfig(clientConfig).build(), connectionFactory.getInternalExecutor());
    // create 2 writers
    @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope(SCOPE, clientConfig);
    JavaSerializer<Long> javaSerializer = new JavaSerializer<>();
    @Cleanup EventStreamWriter<Long> writer1 = clientFactory.createEventWriter(STREAM, javaSerializer, EventWriterConfig.builder().build());
    @Cleanup EventStreamWriter<Long> writer2 = clientFactory.createEventWriter(STREAM, javaSerializer, EventWriterConfig.builder().build());
    AtomicBoolean stopFlag = new AtomicBoolean(false);
    // write events
    writeEvents(writer1, stopFlag);
    writeEvents(writer2, stopFlag);
    // scale the stream several times so that we get complex positions
    Stream streamObj = Stream.of(SCOPE, STREAM);
    scale(controller, streamObj);
    @Cleanup ClientFactoryImpl syncClientFactory = new ClientFactoryImpl(SCOPE, new ControllerImpl(ControllerImplConfig.builder().clientConfig(clientConfig).build(), connectionFactory.getInternalExecutor()), connectionFactory);
    String markStream = NameUtils.getMarkStreamForStream(STREAM);
    RevisionedStreamClient<Watermark> watermarkReader = syncClientFactory.createRevisionedStreamClient(markStream, new WatermarkSerializer(), SynchronizerConfig.builder().build());
    LinkedBlockingQueue<Watermark> watermarks = new LinkedBlockingQueue<>();
    fetchWatermarks(watermarkReader, watermarks, stopFlag);
    AssertExtensions.assertEventuallyEquals(true, () -> watermarks.size() >= 2, 100000);
    // scale down one controller instance.
    Futures.getAndHandleExceptions(controllerInstance.scaleService(1), ExecutionException::new);
    // wait until at least 2 more watermarks are emitted
    AssertExtensions.assertEventuallyEquals(true, () -> watermarks.size() >= 4, 100000);
    stopFlag.set(true);
    Watermark watermark0 = watermarks.take();
    Watermark watermark1 = watermarks.take();
    Watermark watermark2 = watermarks.take();
    Watermark watermark3 = watermarks.take();
    assertTrue(watermark0.getLowerTimeBound() <= watermark0.getUpperTimeBound());
    assertTrue(watermark1.getLowerTimeBound() <= watermark1.getUpperTimeBound());
    assertTrue(watermark2.getLowerTimeBound() <= watermark2.getUpperTimeBound());
    assertTrue(watermark3.getLowerTimeBound() <= watermark3.getUpperTimeBound());
    // verify that watermarks are increasing in time.
    assertTrue(watermark0.getLowerTimeBound() < watermark1.getLowerTimeBound());
    assertTrue(watermark1.getLowerTimeBound() < watermark2.getLowerTimeBound());
    assertTrue(watermark2.getLowerTimeBound() < watermark3.getLowerTimeBound());
    // use watermark as lower and upper bounds.
    Map<Segment, Long> positionMap0 = watermark0.getStreamCut().entrySet().stream().collect(Collectors.toMap(x -> new Segment(SCOPE, STREAM, x.getKey().getSegmentId()), Map.Entry::getValue));
    StreamCut streamCutStart = new StreamCutImpl(streamObj, positionMap0);
    Map<Stream, StreamCut> start = Collections.singletonMap(streamObj, streamCutStart);
    Map<Segment, Long> positionMap2 = watermark2.getStreamCut().entrySet().stream().collect(Collectors.toMap(x -> new Segment(SCOPE, STREAM, x.getKey().getSegmentId()), Map.Entry::getValue));
    StreamCut streamCutEnd = new StreamCutImpl(streamObj, positionMap2);
    Map<Stream, StreamCut> end = Collections.singletonMap(streamObj, streamCutEnd);
    @Cleanup ReaderGroupManager readerGroupManager = new ReaderGroupManagerImpl(SCOPE, controller, syncClientFactory);
    String readerGroup = "rg";
    readerGroupManager.createReaderGroup(readerGroup, ReaderGroupConfig.builder().stream(streamObj).startingStreamCuts(start).endingStreamCuts(end).build());
    // create reader on the stream
    @Cleanup final EventStreamReader<Long> reader = clientFactory.createReader("myreader", readerGroup, javaSerializer, ReaderConfig.builder().build());
    // read events from the reader.
    // verify that events read belong to the bound
    EventRead<Long> event = reader.readNextEvent(10000L);
    AtomicReference<TimeWindow> currentTimeWindow = new AtomicReference<>();
    AssertExtensions.assertEventuallyEquals(true, () -> {
        currentTimeWindow.set(reader.getCurrentTimeWindow(streamObj));
        return currentTimeWindow.get() != null && currentTimeWindow.get().getLowerTimeBound() != null && currentTimeWindow.get().getUpperTimeBound() != null;
    }, 100000);
    log.info("current time window = {}", currentTimeWindow.get());
    while (event.getEvent() != null) {
        Long time = event.getEvent();
        log.info("event read = {}", time);
        event.getPosition();
        assertTrue(time >= currentTimeWindow.get().getLowerTimeBound());
        event = reader.readNextEvent(10000L);
        if (event.isCheckpoint()) {
            event = reader.readNextEvent(10000L);
        }
    }
}