Examples with FutureCompletingBlockingQueue org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue used on opensource projects

Example 6 with FutureCompletingBlockingQueue

use of org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue in project flink by apache.

the class PulsarSourceReaderFactory method create.

@SuppressWarnings("java:S2095")
public static <OUT> SourceReader<OUT, PulsarPartitionSplit> create(SourceReaderContext readerContext, PulsarDeserializationSchema<OUT> deserializationSchema, SourceConfiguration sourceConfiguration) {
    PulsarClient pulsarClient = createClient(sourceConfiguration);
    PulsarAdmin pulsarAdmin = createAdmin(sourceConfiguration);
    // Create a message queue with the predefined source option.
    int queueCapacity = sourceConfiguration.getMessageQueueCapacity();
    FutureCompletingBlockingQueue<RecordsWithSplitIds<PulsarMessage<OUT>>> elementsQueue = new FutureCompletingBlockingQueue<>(queueCapacity);
    // Create different pulsar source reader by subscription type.
    SubscriptionType subscriptionType = sourceConfiguration.getSubscriptionType();
    if (subscriptionType == SubscriptionType.Failover || subscriptionType == SubscriptionType.Exclusive) {
        // Create a ordered split reader supplier.
        Supplier<PulsarOrderedPartitionSplitReader<OUT>> splitReaderSupplier = () -> new PulsarOrderedPartitionSplitReader<>(pulsarClient, pulsarAdmin, sourceConfiguration, deserializationSchema);
        return new PulsarOrderedSourceReader<>(elementsQueue, splitReaderSupplier, readerContext, sourceConfiguration, pulsarClient, pulsarAdmin);
    } else if (subscriptionType == SubscriptionType.Shared || subscriptionType == SubscriptionType.Key_Shared) {
        TransactionCoordinatorClient coordinatorClient = ((PulsarClientImpl) pulsarClient).getTcClient();
        if (coordinatorClient == null && !sourceConfiguration.isEnableAutoAcknowledgeMessage()) {
            throw new IllegalStateException("Transaction is required but didn't enabled");
        }
        Supplier<PulsarUnorderedPartitionSplitReader<OUT>> splitReaderSupplier = () -> new PulsarUnorderedPartitionSplitReader<>(pulsarClient, pulsarAdmin, sourceConfiguration, deserializationSchema, coordinatorClient);
        return new PulsarUnorderedSourceReader<>(elementsQueue, splitReaderSupplier, readerContext, sourceConfiguration, pulsarClient, pulsarAdmin, coordinatorClient);
    } else {
        throw new UnsupportedOperationException("This subscription type is not " + subscriptionType + " supported currently.");
    }
}

Example 7 with FutureCompletingBlockingQueue

use of org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue in project flink by apache.

the class SourceReaderBaseTest method createReaderAndAwaitAvailable.

// ------------------------------------------------------------------------
// Testing Setup Helpers
// ------------------------------------------------------------------------
private static <E> SourceReader<E, ?> createReaderAndAwaitAvailable(final String splitId, final RecordsWithSplitIds<E> records) throws Exception {
    final FutureCompletingBlockingQueue<RecordsWithSplitIds<E>> elementsQueue = new FutureCompletingBlockingQueue<>();
    final SourceReader<E, TestingSourceSplit> reader = new SingleThreadMultiplexSourceReaderBase<E, E, TestingSourceSplit, TestingSourceSplit>(elementsQueue, () -> new TestingSplitReader<>(records), new PassThroughRecordEmitter<>(), new Configuration(), new TestingReaderContext()) {

        @Override
        public void notifyCheckpointComplete(long checkpointId) {
        }

        @Override
        protected void onSplitFinished(Map<String, TestingSourceSplit> finishedSplitIds) {
        }

        @Override
        protected TestingSourceSplit initializedState(TestingSourceSplit split) {
            return split;
        }

        @Override
        protected TestingSourceSplit toSplitType(String splitId, TestingSourceSplit splitState) {
            return splitState;
        }
    };
    reader.start();
    final List<TestingSourceSplit> splits = Collections.singletonList(new TestingSourceSplit(splitId));
    reader.addSplits(splits);
    reader.isAvailable().get();
    return reader;
}

Example 8 with FutureCompletingBlockingQueue

use of org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue in project flink by apache.

the class SourceReaderBaseTest method createReader.

// ---------------- helper methods -----------------
@Override
protected MockSourceReader createReader() {
    FutureCompletingBlockingQueue<RecordsWithSplitIds<int[]>> elementsQueue = new FutureCompletingBlockingQueue<>();
    MockSplitReader mockSplitReader = MockSplitReader.newBuilder().setNumRecordsPerSplitPerFetch(2).setBlockingFetch(true).build();
    return new MockSourceReader(elementsQueue, () -> mockSplitReader, getConfig(), new TestingReaderContext());
}

Example 9 with FutureCompletingBlockingQueue

use of org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue in project flink by apache.

the class SourceReaderBaseTest method testMultipleSplitsWithSeparatedFinishedRecord.

@Test
void testMultipleSplitsWithSeparatedFinishedRecord() throws Exception {
    FutureCompletingBlockingQueue<RecordsWithSplitIds<int[]>> elementsQueue = new FutureCompletingBlockingQueue<>();
    MockSplitReader mockSplitReader = MockSplitReader.newBuilder().setNumRecordsPerSplitPerFetch(2).setSeparatedFinishedRecord(true).setBlockingFetch(false).build();
    MockSourceReader reader = new MockSourceReader(elementsQueue, () -> mockSplitReader, getConfig(), new TestingReaderContext());
    reader.start();
    List<MockSourceSplit> splits = Arrays.asList(getSplit(0, 10, Boundedness.BOUNDED), getSplit(1, 10, Boundedness.BOUNDED));
    reader.addSplits(splits);
    reader.notifyNoMoreSplits();
    while (true) {
        InputStatus status = reader.pollNext(new TestingReaderOutput<>());
        if (status == InputStatus.END_OF_INPUT) {
            break;
        }
        if (status == InputStatus.NOTHING_AVAILABLE) {
            reader.isAvailable().get();
        }
    }
}

Example 10 with FutureCompletingBlockingQueue

use of org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue in project flink by apache.

the class SplitFetcherTest method testWakeup.

@Test
public void testWakeup() throws InterruptedException {
    final int numSplits = 3;
    final int numRecordsPerSplit = 10_000;
    final int wakeupRecordsInterval = 10;
    final int numTotalRecords = numRecordsPerSplit * numSplits;
    FutureCompletingBlockingQueue<RecordsWithSplitIds<int[]>> elementQueue = new FutureCompletingBlockingQueue<>(1);
    SplitFetcher<int[], MockSourceSplit> fetcher = new SplitFetcher<>(0, elementQueue, MockSplitReader.newBuilder().setNumRecordsPerSplitPerFetch(2).setBlockingFetch(true).build(), ExceptionUtils::rethrow, () -> {
    }, (ignore) -> {
    });
    // Prepare the splits.
    List<MockSourceSplit> splits = new ArrayList<>();
    for (int i = 0; i < numSplits; i++) {
        splits.add(new MockSourceSplit(i, 0, numRecordsPerSplit));
        int base = i * numRecordsPerSplit;
        for (int j = base; j < base + numRecordsPerSplit; j++) {
            splits.get(splits.size() - 1).addRecord(j);
        }
    }
    // Add splits to the fetcher.
    fetcher.addSplits(splits);
    // A thread drives the fetcher.
    Thread fetcherThread = new Thread(fetcher, "FetcherThread");
    SortedSet<Integer> recordsRead = Collections.synchronizedSortedSet(new TreeSet<>());
    // A thread waking up the split fetcher frequently.
    AtomicInteger wakeupTimes = new AtomicInteger(0);
    AtomicBoolean stop = new AtomicBoolean(false);
    Thread wakeUpCaller = new Thread("Wakeup Caller") {

        @Override
        public void run() {
            int lastWakeup = 0;
            while (recordsRead.size() < numTotalRecords && !stop.get()) {
                int numRecordsRead = recordsRead.size();
                if (numRecordsRead >= lastWakeup + wakeupRecordsInterval) {
                    fetcher.wakeUp(false);
                    wakeupTimes.incrementAndGet();
                    lastWakeup = numRecordsRead;
                }
            }
        }
    };
    try {
        fetcherThread.start();
        wakeUpCaller.start();
        while (recordsRead.size() < numSplits * numRecordsPerSplit) {
            final RecordsWithSplitIds<int[]> nextBatch = elementQueue.take();
            while (nextBatch.nextSplit() != null) {
                int[] arr;
                while ((arr = nextBatch.nextRecordFromSplit()) != null) {
                    assertTrue(recordsRead.add(arr[0]));
                }
            }
        }
        assertEquals(numTotalRecords, recordsRead.size());
        assertEquals(0, (int) recordsRead.first());
        assertEquals(numTotalRecords - 1, (int) recordsRead.last());
        assertTrue(wakeupTimes.get() > 0);
    } finally {
        stop.set(true);
        fetcher.shutdown();
        fetcherThread.join();
        wakeUpCaller.join();
    }
}