Examples with MockSourceReader org.apache.flink.connector.base.source.reader.mocks.MockSourceReader used on opensource projects

Example 1 with MockSourceReader

use of org.apache.flink.connector.base.source.reader.mocks.MockSourceReader in project flink by apache.

the class SourceReaderBaseTest method testMultipleSplitsWithDifferentFinishingMoments.

@Test
void testMultipleSplitsWithDifferentFinishingMoments() throws Exception {
    FutureCompletingBlockingQueue<RecordsWithSplitIds<int[]>> elementsQueue = new FutureCompletingBlockingQueue<>();
    MockSplitReader mockSplitReader = MockSplitReader.newBuilder().setNumRecordsPerSplitPerFetch(2).setSeparatedFinishedRecord(false).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, 12, 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 2 with MockSourceReader

use of org.apache.flink.connector.base.source.reader.mocks.MockSourceReader in project flink by apache.

the class SourceReaderBaseTest method testPollNextReturnMoreAvailableWhenAllSplitFetcherCloseWithLeftoverElementInQueue.

@Test
void testPollNextReturnMoreAvailableWhenAllSplitFetcherCloseWithLeftoverElementInQueue() throws Exception {
    FutureCompletingBlockingQueue<RecordsWithSplitIds<int[]>> elementsQueue = new FutureCompletingBlockingQueue<>();
    MockSplitReader mockSplitReader = MockSplitReader.newBuilder().setNumRecordsPerSplitPerFetch(1).setBlockingFetch(true).build();
    BlockingShutdownSplitFetcherManager<int[], MockSourceSplit> splitFetcherManager = new BlockingShutdownSplitFetcherManager<>(elementsQueue, () -> mockSplitReader);
    final MockSourceReader sourceReader = new MockSourceReader(elementsQueue, splitFetcherManager, getConfig(), new TestingReaderContext());
    // Create and add a split that only contains one record
    final MockSourceSplit split = new MockSourceSplit(0, 0, 1);
    sourceReader.addSplits(Collections.singletonList(split));
    sourceReader.notifyNoMoreSplits();
    // Add the last record to the split when the splitFetcherManager shutting down SplitFetchers
    splitFetcherManager.getInShutdownSplitFetcherFuture().thenRun(() -> split.addRecord(1));
    assertThat(sourceReader.pollNext(new TestingReaderOutput<>())).isEqualTo(InputStatus.MORE_AVAILABLE);
}

Example 3 with MockSourceReader

use of org.apache.flink.connector.base.source.reader.mocks.MockSourceReader in project flink by apache.

the class SourceReaderBaseTest method testExceptionInSplitReader.

@Test
void testExceptionInSplitReader() {
    assertThatThrownBy(() -> {
        final String errMsg = "Testing Exception";
        FutureCompletingBlockingQueue<RecordsWithSplitIds<int[]>> elementsQueue = new FutureCompletingBlockingQueue<>();
        // called.
        try (MockSourceReader reader = new MockSourceReader(elementsQueue, () -> new SplitReader<int[], MockSourceSplit>() {

            @Override
            public RecordsWithSplitIds<int[]> fetch() {
                throw new RuntimeException(errMsg);
            }

            @Override
            public void handleSplitsChanges(SplitsChange<MockSourceSplit> splitsChanges) {
            }

            @Override
            public void wakeUp() {
            }

            @Override
            public void close() {
            }
        }, getConfig(), new TestingReaderContext())) {
            ValidatingSourceOutput output = new ValidatingSourceOutput();
            reader.addSplits(Collections.singletonList(getSplit(0, NUM_RECORDS_PER_SPLIT, Boundedness.CONTINUOUS_UNBOUNDED)));
            reader.notifyNoMoreSplits();
            // two polls.
            while (true) {
                InputStatus inputStatus = reader.pollNext(output);
                assertThat(inputStatus).isNotEqualTo(InputStatus.END_OF_INPUT);
                // Add a sleep to avoid tight loop.
                Thread.sleep(1);
            }
        }
    }).isInstanceOf(RuntimeException.class).hasMessage("One or more fetchers have encountered exception");
}

Example 4 with MockSourceReader

use of org.apache.flink.connector.base.source.reader.mocks.MockSourceReader 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 5 with MockSourceReader

use of org.apache.flink.connector.base.source.reader.mocks.MockSourceReader 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();
        }
    }
}