Examples with BufferView io.pravega.common.util.BufferView used on opensource projects

Example 71 with BufferView

use of io.pravega.common.util.BufferView in project pravega by pravega.

the class ContainerEventProcessorTests method testEventRejectionOnMaxOutstanding.

public static void testEventRejectionOnMaxOutstanding(ContainerEventProcessor eventProcessorService) throws Exception {
    int maxItemsProcessed = 1000;
    int maxOutstandingBytes = 1024 * 1024;
    int truncationDataSize = 500;
    ContainerEventProcessor.EventProcessorConfig config = new ContainerEventProcessor.EventProcessorConfig(maxItemsProcessed, maxOutstandingBytes, truncationDataSize);
    AtomicLong processorResults = new AtomicLong(0);
    ReusableLatch latch = new ReusableLatch();
    Function<List<BufferView>, CompletableFuture<Void>> handler = l -> {
        Exceptions.handleInterrupted(latch::await);
        processorResults.addAndGet(l.size());
        return CompletableFuture.completedFuture(null);
    };
    @Cleanup ContainerEventProcessor.EventProcessor processor = eventProcessorService.forConsumer("testSegmentMax", handler, config).get(TIMEOUT_FUTURE.toSeconds(), TimeUnit.SECONDS);
    boolean foundMaxOutstandingLimit = false;
    // Write a lot of data with the ContainerEventProcessor not started, so we ensure we get the max outstanding exception.
    BufferView event = new ByteArraySegment("This needs to be a long string to reach the limit sooner!!!".getBytes());
    while (!foundMaxOutstandingLimit) {
        try {
            processor.add(event, TIMEOUT_FUTURE).join();
            processorResults.decrementAndGet();
        } catch (Exception e) {
            // We have reached the max outstanding bytes for this internal Segment.
            Assert.assertTrue(e instanceof ContainerEventProcessor.TooManyOutstandingBytesException);
            foundMaxOutstandingLimit = true;
        }
    }
    latch.release();
    // Wait until all the events are consumed.
    AssertExtensions.assertEventuallyEquals(true, () -> processorResults.get() == 0, TIMEOUT_SUITE_MILLIS);
    // Check that we cannot add empty events.
    AssertExtensions.assertThrows(IllegalArgumentException.class, () -> processor.add(BufferView.empty(), TIMEOUT_FUTURE));
}

Example 72 with BufferView

use of io.pravega.common.util.BufferView in project pravega by pravega.

the class ContainerEventProcessorTests method testFaultyHandler.

public static void testFaultyHandler(ContainerEventProcessor eventProcessorService) throws Exception {
    int maxItemsProcessed = 10;
    int maxOutstandingBytes = 4 * 1024 * 1024;
    int truncationDataSize = 500;
    AtomicLong retries = new AtomicLong(0);
    Function<List<BufferView>, CompletableFuture<Void>> handler = l -> {
        retries.addAndGet(1);
        // Induce some exception here.
        throw new IntentionalException("Some random failure");
    };
    ContainerEventProcessor.EventProcessorConfig config = new ContainerEventProcessor.EventProcessorConfig(maxItemsProcessed, maxOutstandingBytes, truncationDataSize);
    @Cleanup ContainerEventProcessor.EventProcessor processor = eventProcessorService.forConsumer("testSegment", handler, config).get(TIMEOUT_FUTURE.toSeconds(), TimeUnit.SECONDS);
    // Write an event and wait for the event to be processed.
    BufferView event = new ByteArraySegment("event".getBytes());
    processor.add(event, TIMEOUT_FUTURE).join();
    // Wait until the processor perform 10 retries of the same event.
    AssertExtensions.assertEventuallyEquals(true, () -> retries.get() == 10, 10000);
}

Example 73 with BufferView

use of io.pravega.common.util.BufferView in project pravega by pravega.

the class ContainerEventProcessorTests method testTruncationSizeRespected.

/**
 * Verifies that we truncate the Segment the expected number of times based on the config.
 *
 * @throws Exception
 */
@Test(timeout = TIMEOUT_SUITE_MILLIS)
public void testTruncationSizeRespected() throws Exception {
    MockSegmentSupplier mockSegmentSupplier = new MockSegmentSupplier();
    @Cleanup ContainerEventProcessor eventProcessorService = new ContainerEventProcessorImpl(0, mockSegmentSupplier.mockSegmentSupplier(), ITERATION_DELAY, CONTAINER_OPERATION_TIMEOUT, this.executorService());
    int allEventsToProcess = 10;
    int maxItemsPerBatch = 10;
    int maxOutstandingBytes = 4 * 1024 * 1024;
    int truncationDataSize = 20;
    List<Integer> processorResults1 = new ArrayList<>();
    Function<List<BufferView>, CompletableFuture<Void>> handler1 = getNumberSequenceHandler(processorResults1, maxItemsPerBatch);
    ContainerEventProcessor.EventProcessorConfig config = new ContainerEventProcessor.EventProcessorConfig(maxItemsPerBatch, maxOutstandingBytes, truncationDataSize);
    @Cleanup ContainerEventProcessorImpl.EventProcessorImpl processor1 = (ContainerEventProcessorImpl.EventProcessorImpl) eventProcessorService.forConsumer("testSegment1", handler1, config).get(TIMEOUT_FUTURE.toSeconds(), TimeUnit.SECONDS);
    for (int i = 0; i < allEventsToProcess; i++) {
        BufferView event = new ByteArraySegment(ByteBuffer.allocate(Integer.BYTES).putInt(i).array());
        processor1.add(event, TIMEOUT_FUTURE).join();
        // After adding one event, wait for it to be processed.
        AssertExtensions.assertEventuallyEquals(true, () -> processor1.getOutstandingBytes() == 0, 10000);
    }
    // Wait for all items to be processed.
    validateProcessorResults(processor1, processorResults1, allEventsToProcess);
    // Each Integer event write is 13 bytes in size after being serialized.
    verify(mockSegmentSupplier.segmentMock, times((13 * allEventsToProcess) / truncationDataSize - 1)).truncate(anyLong(), any());
}

Example 74 with BufferView

use of io.pravega.common.util.BufferView in project pravega by pravega.

the class ContainerEventProcessorTests method executeEventOrderingTest.

private void executeEventOrderingTest(int numEvents, List<Integer> readEvents, Consumer<DirectSegmentAccess> segmentFailure) throws Exception {
    DirectSegmentAccess faultySegment = spy(new SegmentMock(this.executorService()));
    Function<String, CompletableFuture<DirectSegmentAccess>> faultySegmentSupplier = s -> CompletableFuture.completedFuture(faultySegment);
    @Cleanup ContainerEventProcessor eventProcessorService = new ContainerEventProcessorImpl(0, faultySegmentSupplier, ITERATION_DELAY, CONTAINER_OPERATION_TIMEOUT, this.executorService());
    int maxItemsProcessed = 100;
    int maxOutstandingBytes = 4 * 1024 * 1024;
    int truncationDataSize = 500;
    Function<List<BufferView>, CompletableFuture<Void>> handler = l -> {
        l.forEach(d -> readEvents.add(new ByteArraySegment(d.getCopy()).getInt(0)));
        return CompletableFuture.completedFuture(null);
    };
    // Induce some desired failures.
    segmentFailure.accept(faultySegment);
    ContainerEventProcessor.EventProcessorConfig config = new ContainerEventProcessor.EventProcessorConfig(maxItemsProcessed, maxOutstandingBytes, truncationDataSize);
    @Cleanup ContainerEventProcessor.EventProcessor processor = eventProcessorService.forConsumer("testSequence", handler, config).get(TIMEOUT_FUTURE.toSeconds(), TimeUnit.SECONDS);
    // Write some data.
    for (int i = 0; i < numEvents; i++) {
        ByteArraySegment b = new ByteArraySegment(new byte[Integer.BYTES]);
        b.setInt(0, i);
        processor.add(b.slice(), TIMEOUT_FUTURE).join();
    }
    // Wait until the last event is read.
    AssertExtensions.assertEventuallyEquals(true, () -> !readEvents.isEmpty() && readEvents.get(readEvents.size() - 1) == numEvents - 1, 10000);
}

Example 75 with BufferView

use of io.pravega.common.util.BufferView in project pravega by pravega.

the class ContainerEventProcessorTests method testBasicContainerEventProcessor.

public static void testBasicContainerEventProcessor(ContainerEventProcessor containerEventProcessor) throws Exception {
    int maxItemsPerBatch = 10;
    int maxOutstandingBytes = 4 * 1024 * 1024;
    int truncationDataSize = 500;
    ReusableLatch latch = new ReusableLatch();
    final AtomicReference<String> userEvent = new AtomicReference<>("event1");
    Function<List<BufferView>, CompletableFuture<Void>> handler = l -> {
        l.forEach(s -> Assert.assertEquals(userEvent.get().length(), s.getLength()));
        return CompletableFuture.runAsync(latch::release);
    };
    ContainerEventProcessor.EventProcessorConfig eventProcessorConfig = new ContainerEventProcessor.EventProcessorConfig(maxItemsPerBatch, maxOutstandingBytes, truncationDataSize);
    @Cleanup ContainerEventProcessor.EventProcessor processor = containerEventProcessor.forConsumer("testConsumer", handler, eventProcessorConfig).get(TIMEOUT_FUTURE.toSeconds(), TimeUnit.SECONDS);
    // Test adding one Event to the EventProcessor and wait for the handle to get executed and unblock this thread.
    BufferView event = new ByteArraySegment(userEvent.get().getBytes());
    processor.add(event, TIMEOUT_FUTURE).join();
    latch.await();
    latch.reset();
    // Test the same with a larger events.
    userEvent.set("longerEvent2");
    event = new ByteArraySegment(userEvent.get().getBytes());
    processor.add(event, TIMEOUT_FUTURE).join();
    processor.add(event, TIMEOUT_FUTURE).join();
    processor.add(event, TIMEOUT_FUTURE).join();
    latch.await();
    // Check that if the same EventProcessor name is used, the same object is retrieved.
    Assert.assertEquals(processor, containerEventProcessor.forConsumer("testConsumer", handler, eventProcessorConfig).get(TIMEOUT_FUTURE.toSeconds(), TimeUnit.SECONDS));
}