Examples with ReaderGroupManager io.pravega.client.admin.ReaderGroupManager used on opensource projects

Example 76 with ReaderGroupManager

use of io.pravega.client.admin.ReaderGroupManager in project pravega by pravega.

the class SecureControllerRestApiTest method secureReaderGroupRestApiTest.

@Test
public void secureReaderGroupRestApiTest() throws Exception {
    Invocation.Builder builder;
    Response response;
    restServerURI = CLUSTER.controllerRestUri();
    log.info("REST Server URI: {}", restServerURI);
    // TEST REST server status, ping test
    resourceURl = new StringBuilder(restServerURI).append("/ping").toString();
    webTarget = client.target(resourceURl);
    builder = webTarget.request();
    response = builder.get();
    assertEquals("Ping test", OK.getStatusCode(), response.getStatus());
    log.info("REST Server is running. Ping successful.");
    // Test reader groups APIs.
    // Prepare the streams and readers using the admin client.
    final String testScope = RandomStringUtils.randomAlphanumeric(10);
    final String testStream1 = RandomStringUtils.randomAlphanumeric(10);
    final String testStream2 = RandomStringUtils.randomAlphanumeric(10);
    URI controllerUri = new URI(CLUSTER.controllerUri());
    @Cleanup("shutdown") InlineExecutor inlineExecutor = new InlineExecutor();
    ClientConfig clientConfig = ClientConfig.builder().controllerURI(controllerUri).credentials(new DefaultCredentials(SecurityConfigDefaults.AUTH_ADMIN_PASSWORD, SecurityConfigDefaults.AUTH_ADMIN_USERNAME)).trustStore(TRUSTSTORE_PATH).validateHostName(false).build();
    try (ConnectionPool cp = new ConnectionPoolImpl(clientConfig, new SocketConnectionFactoryImpl(clientConfig));
        StreamManager streamManager = new StreamManagerImpl(createController(controllerUri, inlineExecutor), cp)) {
        log.info("Creating scope: {}", testScope);
        streamManager.createScope(testScope);
        log.info("Creating stream: {}", testStream1);
        StreamConfiguration streamConf1 = StreamConfiguration.builder().scalingPolicy(ScalingPolicy.fixed(1)).build();
        streamManager.createStream(testScope, testStream1, streamConf1);
        log.info("Creating stream: {}", testStream2);
        StreamConfiguration streamConf2 = StreamConfiguration.builder().scalingPolicy(ScalingPolicy.fixed(1)).build();
        streamManager.createStream(testScope, testStream2, streamConf2);
    }
    final String readerGroupName1 = RandomStringUtils.randomAlphanumeric(10);
    final String readerGroupName2 = RandomStringUtils.randomAlphanumeric(10);
    final String reader1 = RandomStringUtils.randomAlphanumeric(10);
    final String reader2 = RandomStringUtils.randomAlphanumeric(10);
    try (ClientFactoryImpl clientFactory = new ClientFactoryImpl(testScope, createController(controllerUri, inlineExecutor), clientConfig);
        ReaderGroupManager readerGroupManager = ReaderGroupManager.withScope(testScope, ClientConfig.builder().controllerURI(controllerUri).credentials(new DefaultCredentials(SecurityConfigDefaults.AUTH_ADMIN_PASSWORD, SecurityConfigDefaults.AUTH_ADMIN_USERNAME)).trustStore(TRUSTSTORE_PATH).validateHostName(false).build())) {
        readerGroupManager.createReaderGroup(readerGroupName1, ReaderGroupConfig.builder().stream(Stream.of(testScope, testStream1)).stream(Stream.of(testScope, testStream2)).build());
        readerGroupManager.createReaderGroup(readerGroupName2, ReaderGroupConfig.builder().stream(Stream.of(testScope, testStream1)).stream(Stream.of(testScope, testStream2)).build());
        clientFactory.createReader(reader1, readerGroupName1, new JavaSerializer<Long>(), ReaderConfig.builder().build());
        clientFactory.createReader(reader2, readerGroupName1, new JavaSerializer<Long>(), ReaderConfig.builder().build());
    }
    // Test fetching readergroups.
    resourceURl = new StringBuilder(restServerURI).append("/v1/scopes/" + testScope + "/readergroups").toString();
    response = client.target(resourceURl).request().get();
    assertEquals("Get readergroups status", OK.getStatusCode(), response.getStatus());
    ReaderGroupsList readerGroupsList = response.readEntity(ReaderGroupsList.class);
    assertEquals("Get readergroups size", 2, readerGroupsList.getReaderGroups().size());
    assertTrue(readerGroupsList.getReaderGroups().contains(new ReaderGroupsListReaderGroups().readerGroupName(readerGroupName1)));
    assertTrue(readerGroupsList.getReaderGroups().contains(new ReaderGroupsListReaderGroups().readerGroupName(readerGroupName2)));
    log.info("Get readergroups successful");
    // Test fetching readergroup info.
    resourceURl = new StringBuilder(restServerURI).append("/v1/scopes/" + testScope + "/readergroups/" + readerGroupName1).toString();
    response = client.target(resourceURl).request().get();
    assertEquals("Get readergroup properties status", OK.getStatusCode(), response.getStatus());
    ReaderGroupProperty readerGroupProperty = response.readEntity(ReaderGroupProperty.class);
    assertEquals("Get readergroup name", readerGroupName1, readerGroupProperty.getReaderGroupName());
    assertEquals("Get readergroup scope name", testScope, readerGroupProperty.getScopeName());
    assertEquals("Get readergroup streams size", 2, readerGroupProperty.getStreamList().size());
    assertTrue(readerGroupProperty.getStreamList().contains(Stream.of(testScope, testStream1).getScopedName()));
    assertTrue(readerGroupProperty.getStreamList().contains(Stream.of(testScope, testStream2).getScopedName()));
    assertEquals("Get readergroup onlinereaders size", 2, readerGroupProperty.getOnlineReaderIds().size());
    assertTrue(readerGroupProperty.getOnlineReaderIds().contains(reader1));
    assertTrue(readerGroupProperty.getOnlineReaderIds().contains(reader2));
    // Test readergroup or scope not found.
    resourceURl = new StringBuilder(restServerURI).append("/v1/scopes/" + testScope + "/readergroups/" + "unknownreadergroup").toString();
    response = client.target(resourceURl).request().get();
    assertEquals("Get readergroup properties status", NOT_FOUND.getStatusCode(), response.getStatus());
    resourceURl = new StringBuilder(restServerURI).append("/v1/scopes/" + "unknownscope" + "/readergroups/" + readerGroupName1).toString();
    response = client.target(resourceURl).request().get();
    assertEquals("Get readergroup properties status", NOT_FOUND.getStatusCode(), response.getStatus());
    log.info("Get readergroup properties successful");
    log.info("Test restApiTests passed successfully!");
}

Example 77 with ReaderGroupManager

use of io.pravega.client.admin.ReaderGroupManager in project pravega by pravega.

the class StreamSeekTest method testStreamSeek.

@Test(timeout = 50000)
public void testStreamSeek() throws Exception {
    createScope(SCOPE);
    createStream(STREAM1);
    createStream(STREAM2);
    @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope(SCOPE, ClientConfig.builder().controllerURI(controllerUri).build());
    @Cleanup EventStreamWriter<String> writer1 = clientFactory.createEventWriter(STREAM1, serializer, EventWriterConfig.builder().build());
    @Cleanup ReaderGroupManager groupManager = ReaderGroupManager.withScope(SCOPE, controllerUri);
    groupManager.createReaderGroup("group", ReaderGroupConfig.builder().disableAutomaticCheckpoints().groupRefreshTimeMillis(0).stream(Stream.of(SCOPE, STREAM1)).stream(Stream.of(SCOPE, STREAM2)).build());
    @Cleanup ReaderGroup readerGroup = groupManager.getReaderGroup("group");
    // Prep the stream with data.
    // 1.Write two events with event size of 30
    writer1.writeEvent(keyGenerator.get(), getEventData.apply(1)).get();
    writer1.writeEvent(keyGenerator.get(), getEventData.apply(2)).get();
    // 2.Scale stream
    Map<Double, Double> newKeyRanges = new HashMap<>();
    newKeyRanges.put(0.0, 0.33);
    newKeyRanges.put(0.33, 0.66);
    newKeyRanges.put(0.66, 1.0);
    scaleStream(STREAM1, newKeyRanges);
    // 3.Write three events with event size of 30
    writer1.writeEvent(keyGenerator.get(), getEventData.apply(3)).get();
    writer1.writeEvent(keyGenerator.get(), getEventData.apply(4)).get();
    writer1.writeEvent(keyGenerator.get(), getEventData.apply(5)).get();
    // Create a reader
    @Cleanup EventStreamReader<String> reader = clientFactory.createReader("readerId", "group", serializer, ReaderConfig.builder().build());
    // Offset of a streamCut is always set to zero.
    // Stream cut 1
    Map<Stream, StreamCut> streamCut1 = readerGroup.getStreamCuts();
    readAndVerify(reader, 1, 2);
    // Sees the segments are empty prior to scaling
    assertNull(reader.readNextEvent(100).getEvent());
    // Checkpoint to move past the scale
    readerGroup.initiateCheckpoint("cp1", executorService());
    // Old segments are released and new ones can be read
    readAndVerify(reader, 3, 4, 5);
    // Stream cut 2
    Map<Stream, StreamCut> streamCut2 = readerGroup.getStreamCuts();
    // reset the readers to offset 0.
    readerGroup.resetReaderGroup(ReaderGroupConfig.builder().startFromStreamCuts(streamCut1).build());
    verifyReinitializationRequiredException(reader);
    @Cleanup EventStreamReader<String> reader1 = clientFactory.createReader("readerId", "group", serializer, ReaderConfig.builder().build());
    // verify that we are at streamCut1
    readAndVerify(reader1, 1, 2);
    // reset readers to post scale offset 0
    readerGroup.resetReaderGroup(ReaderGroupConfig.builder().startFromStreamCuts(streamCut2).build());
    verifyReinitializationRequiredException(reader1);
    @Cleanup EventStreamReader<String> reader2 = clientFactory.createReader("readerId", "group", serializer, ReaderConfig.builder().build());
    // verify that we are at streamCut2
    readAndVerify(reader2, 3, 4, 5);
}

Example 78 with ReaderGroupManager

use of io.pravega.client.admin.ReaderGroupManager in project pravega by pravega.

the class UnreadBytesTest method testUnreadBytesWithEndStreamCuts.

@Test(timeout = 50000)
public void testUnreadBytesWithEndStreamCuts() throws Exception {
    StreamConfiguration config = StreamConfiguration.builder().scalingPolicy(ScalingPolicy.byEventRate(10, 2, 1)).build();
    String streamName = "testUnreadBytesWithEndStreamCuts";
    Controller controller = PRAVEGA.getLocalController();
    controller.createScope("unreadbytes").get();
    controller.createStream("unreadbytes", streamName, config).get();
    @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope("unreadbytes", ClientConfig.builder().controllerURI(PRAVEGA.getControllerURI()).build());
    @Cleanup EventStreamWriter<String> writer = clientFactory.createEventWriter(streamName, new JavaSerializer<>(), EventWriterConfig.builder().build());
    // Write just 2 events to simplify simulating a checkpoint.
    writer.writeEvent("0", "data of size 30").get();
    writer.writeEvent("0", "data of size 30").get();
    String group = "testUnreadBytesWithEndStreamCuts-group";
    @Cleanup ReaderGroupManager groupManager = ReaderGroupManager.withScope("unreadbytes", ClientConfig.builder().controllerURI(PRAVEGA.getControllerURI()).build());
    // create a bounded reader group.
    groupManager.createReaderGroup(group, ReaderGroupConfig.builder().disableAutomaticCheckpoints().stream("unreadbytes/" + streamName, StreamCut.UNBOUNDED, getStreamCut(streamName, 90L, 0)).build());
    ReaderGroup readerGroup = groupManager.getReaderGroup(group);
    @Cleanup EventStreamReader<String> reader = clientFactory.createReader("readerId", group, new JavaSerializer<>(), ReaderConfig.builder().build());
    EventRead<String> firstEvent = reader.readNextEvent(15000);
    EventRead<String> secondEvent = reader.readNextEvent(15000);
    assertNotNull(firstEvent);
    assertEquals("data of size 30", firstEvent.getEvent());
    assertNotNull(secondEvent);
    assertEquals("data of size 30", secondEvent.getEvent());
    // trigger a checkpoint.
    CompletableFuture<Checkpoint> chkPointResult = readerGroup.initiateCheckpoint("test", executorService());
    EventRead<String> chkpointEvent = reader.readNextEvent(15000);
    assertEquals("test", chkpointEvent.getCheckpointName());
    EventRead<String> emptyEvent = reader.readNextEvent(100);
    assertEquals(false, emptyEvent.isCheckpoint());
    assertEquals(null, emptyEvent.getEvent());
    chkPointResult.join();
    // Writer events, to ensure 120Bytes are written.
    writer.writeEvent("0", "data of size 30").get();
    writer.writeEvent("0", "data of size 30").get();
    long unreadBytes = readerGroup.getMetrics().unreadBytes();
    // Ensure the endoffset of 90 Bytes is taken into consideration when computing unread
    assertTrue("Unread bvtes: " + unreadBytes, unreadBytes == 30);
}

Example 79 with ReaderGroupManager

use of io.pravega.client.admin.ReaderGroupManager in project pravega by pravega.

the class StreamCutsTest method testReaderGroupCuts.

@Test(timeout = 40000)
public void testReaderGroupCuts() throws Exception {
    StreamConfiguration config = StreamConfiguration.builder().scalingPolicy(ScalingPolicy.byEventRate(10, 2, 1)).build();
    Controller controller = controllerWrapper.getController();
    controllerWrapper.getControllerService().createScope("test", 0L).get();
    controller.createStream("test", "test", config).get();
    @Cleanup ConnectionFactory connectionFactory = new SocketConnectionFactoryImpl(ClientConfig.builder().build());
    @Cleanup ClientFactoryImpl clientFactory = new ClientFactoryImpl("test", controller, connectionFactory);
    @Cleanup EventStreamWriter<String> writer = clientFactory.createEventWriter("test", new JavaSerializer<>(), EventWriterConfig.builder().build());
    writer.writeEvent("0", "fpj was here").get();
    writer.writeEvent("0", "fpj was here again").get();
    @Cleanup ReaderGroupManager groupManager = new ReaderGroupManagerImpl("test", controller, clientFactory);
    groupManager.createReaderGroup("cuts", ReaderGroupConfig.builder().disableAutomaticCheckpoints().stream("test/test").groupRefreshTimeMillis(0).build());
    @Cleanup ReaderGroup readerGroup = groupManager.getReaderGroup("cuts");
    @Cleanup EventStreamReader<String> reader = clientFactory.createReader("readerId", "cuts", new JavaSerializer<>(), ReaderConfig.builder().initialAllocationDelay(0).build());
    EventRead<String> firstEvent = reader.readNextEvent(5000);
    assertNotNull(firstEvent.getEvent());
    assertEquals("fpj was here", firstEvent.getEvent());
    readerGroup.initiateCheckpoint("cp1", executor);
    EventRead<String> cpEvent = reader.readNextEvent(5000);
    assertEquals("cp1", cpEvent.getCheckpointName());
    EventRead<String> secondEvent = reader.readNextEvent(5000);
    assertNotNull(secondEvent.getEvent());
    assertEquals("fpj was here again", secondEvent.getEvent());
    Map<Stream, StreamCut> cuts = readerGroup.getStreamCuts();
    validateCuts(readerGroup, cuts, Collections.singleton(getQualifiedStreamSegmentName("test", "test", 0L)));
    // Scale the stream to verify that we get more segments in the cut.
    Stream stream = Stream.of("test", "test");
    Map<Double, Double> map = new HashMap<>();
    map.put(0.0, 0.5);
    map.put(0.5, 1.0);
    Boolean result = controller.scaleStream(stream, Collections.singletonList(0L), map, executor).getFuture().get();
    assertTrue(result);
    log.info("Finished 1st scaling");
    writer.writeEvent("0", "fpj was here again0").get();
    writer.writeEvent("1", "fpj was here again1").get();
    EventRead<String> eosEvent = reader.readNextEvent(100);
    // Reader does not yet see the data becasue there has been no CP
    assertNull(eosEvent.getEvent());
    CompletableFuture<Checkpoint> checkpoint = readerGroup.initiateCheckpoint("cp2", executor);
    cpEvent = reader.readNextEvent(100);
    EventRead<String> event0 = reader.readNextEvent(100);
    EventRead<String> event1 = reader.readNextEvent(100);
    cuts = checkpoint.get(5, TimeUnit.SECONDS).asImpl().getPositions();
    // Validate the reader did not release the segments before the checkpoint.
    // This is important because it means that once the checkpoint is initiated no segments change readers.
    Set<String> segmentNames = ImmutableSet.of(getQualifiedStreamSegmentName("test", "test", computeSegmentId(0, 0)));
    validateCuts(readerGroup, cuts, segmentNames);
    CompletableFuture<Map<Stream, StreamCut>> futureCuts = readerGroup.generateStreamCuts(executor);
    EventRead<String> emptyEvent = reader.readNextEvent(100);
    cuts = futureCuts.get();
    segmentNames = ImmutableSet.of(getQualifiedStreamSegmentName("test", "test", computeSegmentId(1, 1)), getQualifiedStreamSegmentName("test", "test", computeSegmentId(2, 1)));
    validateCuts(readerGroup, cuts, segmentNames);
    // Scale down to verify that the number drops back.
    map = new HashMap<>();
    map.put(0.0, 1.0);
    ArrayList<Long> toSeal = new ArrayList<>();
    toSeal.add(computeSegmentId(1, 1));
    toSeal.add(computeSegmentId(2, 1));
    result = controller.scaleStream(stream, Collections.unmodifiableList(toSeal), map, executor).getFuture().get();
    assertTrue(result);
    log.info("Finished 2nd scaling");
    writer.writeEvent("0", "fpj was here again2").get();
    // Reader sees the segment is empty
    emptyEvent = reader.readNextEvent(100);
    assertNull(emptyEvent.getEvent());
    checkpoint = readerGroup.initiateCheckpoint("cp3", executor);
    cpEvent = reader.readNextEvent(100);
    assertEquals("cp3", cpEvent.getCheckpointName());
    // Reader releases segments here
    event0 = reader.readNextEvent(5000);
    assertTrue(event0.getEvent().endsWith("2"));
    cuts = readerGroup.getStreamCuts();
    long three = computeSegmentId(3, 2);
    validateCuts(readerGroup, cuts, Collections.singleton(getQualifiedStreamSegmentName("test", "test", three)));
    // Scale up to 4 segments again.
    map = new HashMap<>();
    map.put(0.0, 0.25);
    map.put(0.25, 0.5);
    map.put(0.5, 0.75);
    map.put(0.75, 1.0);
    result = controller.scaleStream(stream, Collections.singletonList(three), map, executor).getFuture().get();
    assertTrue(result);
    log.info("Finished 3rd scaling");
    writer.writeEvent("0", "fpj was here again3").get();
    // Reader sees the segment is empty
    emptyEvent = reader.readNextEvent(100);
    assertNull(emptyEvent.getEvent());
    readerGroup.initiateCheckpoint("cp4", executor);
    cpEvent = reader.readNextEvent(1000);
    assertEquals("cp4", cpEvent.getCheckpointName());
    // Reader releases segments here
    event0 = reader.readNextEvent(5000);
    assertNotNull(event0.getEvent());
    cuts = readerGroup.getStreamCuts();
    segmentNames = new HashSet<>();
    long four = computeSegmentId(4, 3);
    long five = computeSegmentId(5, 3);
    long six = computeSegmentId(6, 3);
    long seven = computeSegmentId(7, 3);
    segmentNames.add(getQualifiedStreamSegmentName("test", "test", four));
    segmentNames.add(getQualifiedStreamSegmentName("test", "test", five));
    segmentNames.add(getQualifiedStreamSegmentName("test", "test", six));
    segmentNames.add(getQualifiedStreamSegmentName("test", "test", seven));
    validateCuts(readerGroup, cuts, Collections.unmodifiableSet(segmentNames));
}

Example 80 with ReaderGroupManager

use of io.pravega.client.admin.ReaderGroupManager in project pravega by pravega.

the class StreamRecreationTest method testStreamRecreation.

@Test(timeout = 60000)
@SuppressWarnings("deprecation")
public void testStreamRecreation() throws Exception {
    final String myScope = "myScope";
    final String myStream = "myStream";
    final String myReaderGroup = "myReaderGroup";
    final int numIterations = 6;
    // Create the scope and the stream.
    @Cleanup StreamManager streamManager = StreamManager.create(controllerURI);
    streamManager.createScope(myScope);
    @Cleanup ReaderGroupManager readerGroupManager = ReaderGroupManager.withScope(myScope, controllerURI);
    final ReaderGroupConfig readerGroupConfig = ReaderGroupConfig.builder().stream(Stream.of(myScope, myStream)).build();
    for (int i = 0; i < numIterations; i++) {
        log.info("Stream re-creation iteration {}.", i);
        final String eventContent = "myEvent" + String.valueOf(i);
        StreamConfiguration streamConfiguration = StreamConfiguration.builder().scalingPolicy(ScalingPolicy.fixed(i + 1)).build();
        EventWriterConfig eventWriterConfig = EventWriterConfig.builder().build();
        streamManager.createStream(myScope, myStream, streamConfiguration);
        // Write a single event.
        @Cleanup EventStreamClientFactory clientFactory = EventStreamClientFactory.withScope(myScope, ClientConfig.builder().controllerURI(controllerURI).build());
        @Cleanup EventStreamWriter<String> writer = clientFactory.createEventWriter(myStream, new JavaSerializer<>(), eventWriterConfig);
        TransactionalEventStreamWriter<String> txnWriter = clientFactory.createTransactionalEventWriter(myStream, new JavaSerializer<>(), eventWriterConfig);
        // Write events regularly and with transactions.
        if (i % 2 == 0) {
            writer.writeEvent(eventContent).join();
        } else {
            Transaction<String> myTransaction = txnWriter.beginTxn();
            myTransaction.writeEvent(eventContent);
            myTransaction.commit();
            while (myTransaction.checkStatus() != Transaction.Status.COMMITTED) {
                Exceptions.handleInterrupted(() -> Thread.sleep(100));
            }
        }
        writer.close();
        // Read the event.
        readerGroupManager.createReaderGroup(myReaderGroup, readerGroupConfig);
        readerGroupManager.getReaderGroup(myReaderGroup).resetReaderGroup(readerGroupConfig);
        @Cleanup EventStreamReader<String> reader = clientFactory.createReader("myReader", myReaderGroup, new JavaSerializer<>(), ReaderConfig.builder().build());
        String readResult;
        do {
            readResult = reader.readNextEvent(1000).getEvent();
        } while (readResult == null);
        assertEquals("Wrong event read in re-created stream", eventContent, readResult);
        // Delete the stream.
        StreamInfo streamInfo = streamManager.getStreamInfo(myScope, myStream);
        assertFalse(streamInfo.isSealed());
        assertTrue("Unable to seal re-created stream.", streamManager.sealStream(myScope, myStream));
        streamInfo = streamManager.getStreamInfo(myScope, myStream);
        assertTrue(streamInfo.isSealed());
        assertTrue("Unable to delete re-created stream.", streamManager.deleteStream(myScope, myStream));
    }
}