Examples with MockController io.pravega.client.stream.mock.MockController used on opensource projects

Example 16 with MockController

use of io.pravega.client.stream.mock.MockController in project pravega by pravega.

the class RevisionedStreamClientTest method testWriteWhileReading.

@Test
public void testWriteWhileReading() {
    String scope = "scope";
    String stream = "stream";
    PravegaNodeUri endpoint = new PravegaNodeUri("localhost", SERVICE_PORT);
    @Cleanup MockConnectionFactoryImpl connectionFactory = new MockConnectionFactoryImpl();
    @Cleanup MockController controller = new MockController(endpoint.getEndpoint(), endpoint.getPort(), connectionFactory);
    MockSegmentStreamFactory streamFactory = new MockSegmentStreamFactory();
    @Cleanup ClientFactory clientFactory = new ClientFactoryImpl(scope, controller, connectionFactory, streamFactory, streamFactory, streamFactory);
    SynchronizerConfig config = SynchronizerConfig.builder().build();
    RevisionedStreamClient<String> client = clientFactory.createRevisionedStreamClient(stream, new JavaSerializer<>(), config);
    Revision initialRevision = client.fetchLatestRevision();
    client.writeUnconditionally("a");
    client.writeUnconditionally("b");
    client.writeUnconditionally("c");
    Iterator<Entry<Revision, String>> iter = client.readFrom(initialRevision);
    assertTrue(iter.hasNext());
    assertEquals("a", iter.next().getValue());
    client.writeUnconditionally("d");
    assertTrue(iter.hasNext());
    assertEquals("b", iter.next().getValue());
    assertTrue(iter.hasNext());
    Entry<Revision, String> entry = iter.next();
    assertEquals("c", entry.getValue());
    assertFalse(iter.hasNext());
    iter = client.readFrom(entry.getKey());
    assertTrue(iter.hasNext());
    assertEquals("d", iter.next().getValue());
    assertFalse(iter.hasNext());
}

Example 17 with MockController

use of io.pravega.client.stream.mock.MockController in project pravega by pravega.

the class ReaderGroupStateManagerTest method testSegmentsCannotBeReleasedWithoutCheckpoint.

@Test(timeout = 10000)
public void testSegmentsCannotBeReleasedWithoutCheckpoint() throws ReinitializationRequiredException {
    String scope = "scope";
    String stream = "stream";
    PravegaNodeUri endpoint = new PravegaNodeUri("localhost", SERVICE_PORT);
    MockConnectionFactoryImpl connectionFactory = new MockConnectionFactoryImpl();
    Segment segment0 = new Segment(scope, stream, 0);
    Segment segment1 = new Segment(scope, stream, 1);
    Segment segment2 = new Segment(scope, stream, 2);
    MockController controller = new MockControllerWithSuccessors(endpoint.getEndpoint(), endpoint.getPort(), connectionFactory, new StreamSegmentsWithPredecessors(ImmutableMap.of(), ""));
    MockSegmentStreamFactory streamFactory = new MockSegmentStreamFactory();
    @Cleanup ClientFactory clientFactory = new ClientFactoryImpl(scope, controller, connectionFactory, streamFactory, streamFactory, streamFactory);
    SynchronizerConfig config = SynchronizerConfig.builder().build();
    @Cleanup StateSynchronizer<ReaderGroupState> stateSynchronizer = createState(stream, clientFactory, config);
    AtomicLong clock = new AtomicLong();
    Map<Segment, Long> segments = ImmutableMap.of(segment0, 0L, segment1, 1L, segment2, 2L);
    ReaderGroupStateManager.initializeReaderGroup(stateSynchronizer, ReaderGroupConfig.builder().stream(Stream.of(scope, stream)).build(), segments);
    val readerState1 = new ReaderGroupStateManager("reader1", stateSynchronizer, controller, clock::get);
    readerState1.initializeReader(0);
    val readerState2 = new ReaderGroupStateManager("reader2", stateSynchronizer, controller, clock::get);
    readerState2.initializeReader(0);
    assertEquals(segments, stateSynchronizer.getState().getUnassignedSegments());
    stateSynchronizer.updateStateUnconditionally(new CreateCheckpoint("CP1"));
    stateSynchronizer.fetchUpdates();
    assertEquals("CP1", readerState1.getCheckpoint());
    assertEquals(Collections.emptyMap(), readerState1.acquireNewSegmentsIfNeeded(1));
    assertEquals(Collections.emptyMap(), readerState2.acquireNewSegmentsIfNeeded(2));
    assertEquals("CP1", readerState2.getCheckpoint());
    readerState1.checkpoint("CP1", new PositionImpl(Collections.emptyMap()));
    readerState2.checkpoint("CP1", new PositionImpl(Collections.emptyMap()));
    assertEquals(segments, stateSynchronizer.getState().getPositionsForCompletedCheckpoint("CP1"));
    Map<Segment, Long> segments1 = readerState1.acquireNewSegmentsIfNeeded(1);
    Map<Segment, Long> segments2 = readerState2.acquireNewSegmentsIfNeeded(2);
    assertFalse(segments1.isEmpty());
    assertFalse(segments2.isEmpty());
    assertEquals(0, stateSynchronizer.getState().getNumberOfUnassignedSegments());
    // Induce imbalance
    for (Entry<Segment, Long> entry : segments1.entrySet()) {
        stateSynchronizer.updateStateUnconditionally(new ReaderGroupState.ReleaseSegment("reader1", entry.getKey(), entry.getValue()));
        stateSynchronizer.updateStateUnconditionally(new ReaderGroupState.AcquireSegment("reader2", entry.getKey()));
    }
    stateSynchronizer.updateStateUnconditionally(new CreateCheckpoint("CP2"));
    stateSynchronizer.fetchUpdates();
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertNull(readerState1.findSegmentToReleaseIfRequired());
    assertNull(readerState2.findSegmentToReleaseIfRequired());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertFalse(readerState2.releaseSegment(segments2.keySet().iterator().next(), 20, 2));
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    readerState1.checkpoint("CP2", new PositionImpl(Collections.emptyMap()));
    readerState2.checkpoint("CP2", new PositionImpl(segments));
    assertEquals(segments, stateSynchronizer.getState().getPositionsForCompletedCheckpoint("CP2"));
    Segment toRelease = readerState2.findSegmentToReleaseIfRequired();
    assertNotNull(toRelease);
    assertTrue(readerState2.releaseSegment(toRelease, 10, 1));
    assertEquals(1, stateSynchronizer.getState().getNumberOfUnassignedSegments());
}

Example 18 with MockController

use of io.pravega.client.stream.mock.MockController in project pravega by pravega.

the class ReaderGroupStateManagerTest method testSegmentsAssigned.

@Test(timeout = 10000)
public void testSegmentsAssigned() throws ReinitializationRequiredException {
    String scope = "scope";
    String stream = "stream";
    PravegaNodeUri endpoint = new PravegaNodeUri("localhost", SERVICE_PORT);
    MockConnectionFactoryImpl connectionFactory = new MockConnectionFactoryImpl();
    MockController controller = new MockController(endpoint.getEndpoint(), endpoint.getPort(), connectionFactory);
    MockSegmentStreamFactory streamFactory = new MockSegmentStreamFactory();
    @Cleanup ClientFactory clientFactory = new ClientFactoryImpl(scope, controller, connectionFactory, streamFactory, streamFactory, streamFactory);
    SynchronizerConfig config = SynchronizerConfig.builder().build();
    @Cleanup StateSynchronizer<ReaderGroupState> stateSynchronizer = createState(stream, clientFactory, config);
    AtomicLong clock = new AtomicLong();
    Map<Segment, Long> segments = new HashMap<>();
    segments.put(new Segment(scope, stream, 0), 0L);
    segments.put(new Segment(scope, stream, 1), 1L);
    segments.put(new Segment(scope, stream, 2), 2L);
    segments.put(new Segment(scope, stream, 3), 3L);
    ReaderGroupStateManager.initializeReaderGroup(stateSynchronizer, ReaderGroupConfig.builder().stream(Stream.of(scope, stream)).build(), segments);
    ReaderGroupStateManager reader1 = new ReaderGroupStateManager("reader1", stateSynchronizer, controller, clock::get);
    reader1.initializeReader(0);
    ReaderGroupStateManager reader2 = new ReaderGroupStateManager("reader2", stateSynchronizer, controller, clock::get);
    reader2.initializeReader(0);
    Map<Segment, Long> segments1 = reader1.acquireNewSegmentsIfNeeded(0);
    assertFalse(segments1.isEmpty());
    assertEquals(2, segments1.size());
    assertTrue(reader1.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNull(reader1.findSegmentToReleaseIfRequired());
    Map<Segment, Long> segments2 = reader2.acquireNewSegmentsIfNeeded(0);
    assertFalse(segments2.isEmpty());
    assertEquals(2, segments2.size());
    assertTrue(reader2.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNull(reader2.findSegmentToReleaseIfRequired());
    assertTrue(Sets.intersection(segments1.keySet(), segments2.keySet()).isEmpty());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertFalse(reader1.releaseSegment(new Segment(scope, stream, 0), 0, 0));
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertTrue(reader1.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNull(reader1.findSegmentToReleaseIfRequired());
    assertTrue(reader2.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNull(reader2.findSegmentToReleaseIfRequired());
    reader1.readerShutdown(new PositionImpl(segments1));
    Map<Segment, Long> segmentsRecovered = reader2.acquireNewSegmentsIfNeeded(0);
    assertFalse(segmentsRecovered.isEmpty());
    assertEquals(2, segmentsRecovered.size());
    assertEquals(segments1, segmentsRecovered);
    assertTrue(reader2.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNull(reader2.findSegmentToReleaseIfRequired());
    segments2.putAll(segmentsRecovered);
    reader2.readerShutdown(new PositionImpl(segments2));
    reader1.initializeReader(0);
    segments1 = reader1.acquireNewSegmentsIfNeeded(0);
    assertEquals(4, segments1.size());
    assertEquals(segments2, segments1);
}

Example 19 with MockController

use of io.pravega.client.stream.mock.MockController in project pravega by pravega.

the class ReaderGroupStateManagerTest method testReleaseWhenReadersAdded.

// (timeout = 20000)
@Test
public void testReleaseWhenReadersAdded() throws ReinitializationRequiredException {
    String scope = "scope";
    String stream = "stream";
    PravegaNodeUri endpoint = new PravegaNodeUri("localhost", SERVICE_PORT);
    MockConnectionFactoryImpl connectionFactory = new MockConnectionFactoryImpl();
    MockController controller = new MockController(endpoint.getEndpoint(), endpoint.getPort(), connectionFactory);
    MockSegmentStreamFactory streamFactory = new MockSegmentStreamFactory();
    @Cleanup ClientFactory clientFactory = new ClientFactoryImpl(scope, controller, connectionFactory, streamFactory, streamFactory, streamFactory);
    SynchronizerConfig config = SynchronizerConfig.builder().build();
    @Cleanup StateSynchronizer<ReaderGroupState> stateSynchronizer = createState(stream, clientFactory, config);
    AtomicLong clock = new AtomicLong();
    Map<Segment, Long> segments = new HashMap<>();
    segments.put(new Segment(scope, stream, 0), 0L);
    segments.put(new Segment(scope, stream, 1), 1L);
    segments.put(new Segment(scope, stream, 2), 2L);
    segments.put(new Segment(scope, stream, 3), 3L);
    segments.put(new Segment(scope, stream, 4), 4L);
    segments.put(new Segment(scope, stream, 5), 5L);
    ReaderGroupStateManager.initializeReaderGroup(stateSynchronizer, ReaderGroupConfig.builder().stream(Stream.of(scope, stream)).build(), segments);
    ReaderGroupStateManager reader1 = new ReaderGroupStateManager("reader1", stateSynchronizer, controller, clock::get);
    reader1.initializeReader(0);
    Map<Segment, Long> segments1 = reader1.acquireNewSegmentsIfNeeded(0);
    assertEquals(6, segments1.size());
    ReaderGroupStateManager reader2 = new ReaderGroupStateManager("reader2", stateSynchronizer, controller, clock::get);
    reader2.initializeReader(0);
    assertTrue(reader2.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNull(reader1.findSegmentToReleaseIfRequired());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertNotNull(reader1.findSegmentToReleaseIfRequired());
    reader1.releaseSegment(new Segment(scope, stream, 3), 3, 0);
    assertNull(reader1.findSegmentToReleaseIfRequired());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertNotNull(reader1.findSegmentToReleaseIfRequired());
    reader1.releaseSegment(new Segment(scope, stream, 4), 4, 0);
    assertNull(reader1.findSegmentToReleaseIfRequired());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertNotNull(reader1.findSegmentToReleaseIfRequired());
    reader1.releaseSegment(new Segment(scope, stream, 5), 5, 0);
    assertNull(reader1.findSegmentToReleaseIfRequired());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertNull(reader1.findSegmentToReleaseIfRequired());
    Map<Segment, Long> segments2 = reader2.acquireNewSegmentsIfNeeded(0);
    assertEquals(3, segments2.size());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    ReaderGroupStateManager reader3 = new ReaderGroupStateManager("reader3", stateSynchronizer, controller, clock::get);
    reader3.initializeReader(0);
    assertTrue(reader3.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNotNull(reader1.findSegmentToReleaseIfRequired());
    reader1.releaseSegment(new Segment(scope, stream, 0), 0, 0);
    assertNull(reader1.findSegmentToReleaseIfRequired());
    assertNotNull(reader2.findSegmentToReleaseIfRequired());
    reader2.releaseSegment(new Segment(scope, stream, 3), 3, 0);
    assertNull(reader2.findSegmentToReleaseIfRequired());
    Map<Segment, Long> segments3 = reader3.acquireNewSegmentsIfNeeded(0);
    assertEquals(2, segments3.size());
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    assertTrue(reader3.acquireNewSegmentsIfNeeded(0).isEmpty());
    assertNull(reader1.findSegmentToReleaseIfRequired());
    assertNull(reader2.findSegmentToReleaseIfRequired());
    assertNull(reader3.findSegmentToReleaseIfRequired());
}

Example 20 with MockController

use of io.pravega.client.stream.mock.MockController in project pravega by pravega.

the class ReaderGroupStateManagerTest method testCompaction.

@Test(timeout = 10000)
public void testCompaction() throws ReinitializationRequiredException {
    String scope = "scope";
    String stream = "stream";
    PravegaNodeUri endpoint = new PravegaNodeUri("localhost", SERVICE_PORT);
    MockConnectionFactoryImpl connectionFactory = new MockConnectionFactoryImpl();
    MockController controller = new MockController(endpoint.getEndpoint(), endpoint.getPort(), connectionFactory);
    MockSegmentStreamFactory streamFactory = new MockSegmentStreamFactory();
    @Cleanup ClientFactory clientFactory = new ClientFactoryImpl(scope, controller, connectionFactory, streamFactory, streamFactory, streamFactory);
    SynchronizerConfig config = SynchronizerConfig.builder().build();
    @Cleanup StateSynchronizer<ReaderGroupState> state1 = createState(stream, clientFactory, config);
    Segment s1 = new Segment(scope, stream, 1);
    Segment s2 = new Segment(scope, stream, 2);
    Map<Segment, Long> segments = new HashMap<>();
    segments.put(s1, 1L);
    segments.put(s2, 2L);
    AtomicLong clock = new AtomicLong();
    ReaderGroupStateManager.initializeReaderGroup(state1, ReaderGroupConfig.builder().stream(Stream.of(scope, stream)).build(), segments);
    ReaderGroupStateManager r1 = new ReaderGroupStateManager("r1", state1, controller, clock::get);
    r1.initializeReader(0);
    r1.acquireNewSegmentsIfNeeded(0);
    assertTrue(state1.getState().getUnassignedSegments().isEmpty());
    state1.compact(s -> new ReaderGroupState.CompactReaderGroupState(s));
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    r1.acquireNewSegmentsIfNeeded(0);
    state1.compact(s -> new ReaderGroupState.CompactReaderGroupState(s));
    clock.addAndGet(ReaderGroupStateManager.UPDATE_WINDOW.toNanos());
    @Cleanup StateSynchronizer<ReaderGroupState> state2 = createState(stream, clientFactory, config);
    ReaderGroupStateManager r2 = new ReaderGroupStateManager("r2", state2, controller, clock::get);
    r2.initializeReader(0);
    assertEquals(state1.getState().getPositions(), state2.getState().getPositions());
    state1.fetchUpdates();
    assertTrue(r1.releaseSegment(s1, 1, 1));
    state2.fetchUpdates();
    assertFalse(state2.getState().getUnassignedSegments().isEmpty());
    assertFalse(r2.acquireNewSegmentsIfNeeded(0).isEmpty());
    state2.fetchUpdates();
    assertTrue(state2.getState().getUnassignedSegments().isEmpty());
    assertEquals(Collections.singleton(s2), state2.getState().getSegments("r1"));
    assertEquals(Collections.singleton(s1), state2.getState().getSegments("r2"));
    state2.compact(s -> new ReaderGroupState.CompactReaderGroupState(s));
    r1.findSegmentToReleaseIfRequired();
    r1.acquireNewSegmentsIfNeeded(0);
    r2.getCheckpoint();
    @Cleanup StateSynchronizer<ReaderGroupState> state3 = createState(stream, clientFactory, config);
    state3.fetchUpdates();
    assertEquals(state3.getState().getPositions(), state1.getState().getPositions());
    assertEquals(state3.getState().getPositions(), state2.getState().getPositions());
}