Examples with QueueEntry co.cask.cdap.data2.queue.QueueEntry used on opensource projects

Example 6 with QueueEntry

use of co.cask.cdap.data2.queue.QueueEntry in project cdap by caskdata.

the class QueueTest method testOneEnqueueDequeue.

private void testOneEnqueueDequeue(DequeueStrategy strategy) throws Exception {
    // since this is used by more than one test method, ensure uniqueness of the queue name by adding strategy
    QueueName queueName = QueueName.fromFlowlet(NamespaceId.DEFAULT.getEntityName(), "app", "flow", "flowlet", "queue1" + strategy.toString());
    configureGroups(queueName, ImmutableList.of(new ConsumerGroupConfig(0L, 1, strategy, null), new ConsumerGroupConfig(1L, 1, strategy, null)));
    List<ConsumerConfig> consumerConfigs = ImmutableList.of(new ConsumerConfig(0L, 0, 1, strategy, null), new ConsumerConfig(1L, 0, 1, strategy, null));
    try (QueueProducer producer = queueClientFactory.createProducer(queueName)) {
        TransactionContext txContext = createTxContext(producer);
        txContext.start();
        producer.enqueue(new QueueEntry(Bytes.toBytes(55)));
        txContext.finish();
        try (QueueConsumer consumer = queueClientFactory.createConsumer(queueName, consumerConfigs.get(0), 2)) {
            txContext = createTxContext(consumer);
            txContext.start();
            Assert.assertEquals(55, Bytes.toInt(consumer.dequeue().iterator().next()));
            txContext.finish();
        }
    }
    forceEviction(queueName, 2);
    // verifying that consumer of the 2nd group can process items: they were not evicted
    try (QueueConsumer consumer2 = queueClientFactory.createConsumer(queueName, consumerConfigs.get(1), 2)) {
        TransactionContext txContext = createTxContext(consumer2);
        txContext.start();
        Assert.assertEquals(55, Bytes.toInt(consumer2.dequeue().iterator().next()));
        txContext.finish();
    }
    // now all should be evicted
    verifyQueueIsEmpty(queueName, consumerConfigs);
}

Example 7 with QueueEntry

use of co.cask.cdap.data2.queue.QueueEntry in project cdap by caskdata.

the class InMemoryStreamFileWriterFactory method create.

@Override
public FileWriter<StreamEvent> create(StreamConfig config, int generation) throws IOException {
    final QueueProducer producer = queueClientFactory.createProducer(QueueName.fromStream(config.getStreamId()));
    final List<TransactionAware> txAwares = Lists.newArrayList();
    if (producer instanceof TransactionAware) {
        txAwares.add((TransactionAware) producer);
    }
    final TransactionExecutor txExecutor = executorFactory.createExecutor(txAwares);
    // Adapt the FileWriter interface into Queue2Producer
    return new FileWriter<StreamEvent>() {

        private final List<StreamEvent> events = Lists.newArrayList();

        @Override
        public void append(StreamEvent event) throws IOException {
            events.add(event);
        }

        @Override
        public void appendAll(Iterator<? extends StreamEvent> events) throws IOException {
            Iterators.addAll(this.events, events);
        }

        @Override
        public void close() throws IOException {
            producer.close();
        }

        @Override
        public void flush() throws IOException {
            try {
                txExecutor.execute(new TransactionExecutor.Subroutine() {

                    @Override
                    public void apply() throws Exception {
                        for (StreamEvent event : events) {
                            producer.enqueue(new QueueEntry(STREAM_EVENT_CODEC.encodePayload(event)));
                        }
                        events.clear();
                    }
                });
            } catch (TransactionFailureException e) {
                throw new IOException(e);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
                throw new InterruptedIOException();
            }
        }
    };
}

Example 8 with QueueEntry

use of co.cask.cdap.data2.queue.QueueEntry in project cdap by caskdata.

the class FlowTest method testFlow.

@Test
public void testFlow() throws Exception {
    final ApplicationWithPrograms app = AppFabricTestHelper.deployApplicationWithManager(WordCountApp.class, TEMP_FOLDER_SUPPLIER);
    List<ProgramController> controllers = Lists.newArrayList();
    for (ProgramDescriptor programDescriptor : app.getPrograms()) {
        // running mapreduce is out of scope of this tests (there's separate unit-test for that)
        if (programDescriptor.getProgramId().getType() == ProgramType.MAPREDUCE) {
            continue;
        }
        controllers.add(AppFabricTestHelper.submit(app, programDescriptor.getSpecification().getClassName(), new BasicArguments(), TEMP_FOLDER_SUPPLIER));
    }
    TimeUnit.SECONDS.sleep(1);
    TransactionSystemClient txSystemClient = AppFabricTestHelper.getInjector().getInstance(TransactionSystemClient.class);
    QueueName queueName = QueueName.fromStream(app.getApplicationId().getNamespace(), "text");
    QueueClientFactory queueClientFactory = AppFabricTestHelper.getInjector().getInstance(QueueClientFactory.class);
    QueueProducer producer = queueClientFactory.createProducer(queueName);
    // start tx to write in queue in tx
    Transaction tx = txSystemClient.startShort();
    ((TransactionAware) producer).startTx(tx);
    StreamEventCodec codec = new StreamEventCodec();
    for (int i = 0; i < 10; i++) {
        String msg = "Testing message " + i;
        StreamEvent event = new StreamEvent(ImmutableMap.<String, String>of(), ByteBuffer.wrap(msg.getBytes(Charsets.UTF_8)));
        producer.enqueue(new QueueEntry(codec.encodePayload(event)));
    }
    // commit tx
    ((TransactionAware) producer).commitTx();
    txSystemClient.commitOrThrow(tx);
    // Query the service for at most 10 seconds for the expected result
    Gson gson = new Gson();
    DiscoveryServiceClient discoveryServiceClient = AppFabricTestHelper.getInjector().getInstance(DiscoveryServiceClient.class);
    ServiceDiscovered serviceDiscovered = discoveryServiceClient.discover(String.format("service.%s.%s.%s", DefaultId.NAMESPACE.getNamespace(), "WordCountApp", "WordFrequencyService"));
    EndpointStrategy endpointStrategy = new RandomEndpointStrategy(serviceDiscovered);
    int trials = 0;
    while (trials++ < 10) {
        Discoverable discoverable = endpointStrategy.pick(2, TimeUnit.SECONDS);
        URL url = new URL(String.format("http://%s:%d/v3/namespaces/default/apps/%s/services/%s/methods/%s/%s", discoverable.getSocketAddress().getHostName(), discoverable.getSocketAddress().getPort(), "WordCountApp", "WordFrequencyService", "wordfreq", "text:Testing"));
        try {
            HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
            Map<String, Long> responseContent = gson.fromJson(new InputStreamReader(urlConn.getInputStream(), Charsets.UTF_8), new TypeToken<Map<String, Long>>() {
            }.getType());
            LOG.info("Service response: " + responseContent);
            if (ImmutableMap.of("text:Testing", 10L).equals(responseContent)) {
                break;
            }
        } catch (Throwable t) {
            LOG.info("Exception when trying to query service.", t);
        }
        TimeUnit.SECONDS.sleep(1);
    }
    Assert.assertTrue(trials < 10);
    for (ProgramController controller : controllers) {
        controller.stop().get();
    }
}

Example 9 with QueueEntry

use of co.cask.cdap.data2.queue.QueueEntry in project cdap by caskdata.

the class OpenCloseDataSetTest method testDataSetsAreClosed.

@Test(timeout = 120000)
public void testDataSetsAreClosed() throws Exception {
    final String tableName = "foo";
    TrackingTable.resetTracker();
    ApplicationWithPrograms app = AppFabricTestHelper.deployApplicationWithManager(DummyAppWithTrackingTable.class, TEMP_FOLDER_SUPPLIER);
    List<ProgramController> controllers = Lists.newArrayList();
    // start the programs
    for (ProgramDescriptor programDescriptor : app.getPrograms()) {
        if (programDescriptor.getProgramId().getType().equals(ProgramType.MAPREDUCE)) {
            continue;
        }
        controllers.add(AppFabricTestHelper.submit(app, programDescriptor.getSpecification().getClassName(), new BasicArguments(), TEMP_FOLDER_SUPPLIER));
    }
    // write some data to queue
    TransactionSystemClient txSystemClient = AppFabricTestHelper.getInjector().getInstance(TransactionSystemClient.class);
    QueueName queueName = QueueName.fromStream(app.getApplicationId().getNamespace(), "xx");
    QueueClientFactory queueClientFactory = AppFabricTestHelper.getInjector().getInstance(QueueClientFactory.class);
    QueueProducer producer = queueClientFactory.createProducer(queueName);
    // start tx to write in queue in tx
    Transaction tx = txSystemClient.startShort();
    ((TransactionAware) producer).startTx(tx);
    StreamEventCodec codec = new StreamEventCodec();
    for (int i = 0; i < 4; i++) {
        String msg = "x" + i;
        StreamEvent event = new StreamEvent(ImmutableMap.<String, String>of(), ByteBuffer.wrap(msg.getBytes(Charsets.UTF_8)));
        producer.enqueue(new QueueEntry(codec.encodePayload(event)));
    }
    // commit tx
    ((TransactionAware) producer).commitTx();
    txSystemClient.commitOrThrow(tx);
    while (TrackingTable.getTracker(tableName, "write") < 4) {
        TimeUnit.MILLISECONDS.sleep(50);
    }
    // get the number of writes to the foo table
    Assert.assertEquals(4, TrackingTable.getTracker(tableName, "write"));
    // only 2 "open" calls should be tracked:
    // 1. the flow has started with single flowlet (service is loaded lazily on 1st request)
    // 2. DatasetSystemMetadataWriter also instantiates the dataset because it needs to add some system tags
    // for the dataset
    Assert.assertEquals(2, TrackingTable.getTracker(tableName, "open"));
    // now send a request to the service
    Gson gson = new Gson();
    DiscoveryServiceClient discoveryServiceClient = AppFabricTestHelper.getInjector().getInstance(DiscoveryServiceClient.class);
    Discoverable discoverable = new RandomEndpointStrategy(discoveryServiceClient.discover(String.format("service.%s.%s.%s", DefaultId.NAMESPACE.getEntityName(), "dummy", "DummyService"))).pick(5, TimeUnit.SECONDS);
    Assert.assertNotNull(discoverable);
    HttpClient client = new DefaultHttpClient();
    HttpGet get = new HttpGet(String.format("http://%s:%d/v3/namespaces/default/apps/%s/services/%s/methods/%s", discoverable.getSocketAddress().getHostName(), discoverable.getSocketAddress().getPort(), "dummy", "DummyService", "x1"));
    HttpResponse response = client.execute(get);
    String responseContent = gson.fromJson(new InputStreamReader(response.getEntity().getContent(), Charsets.UTF_8), String.class);
    client.getConnectionManager().shutdown();
    Assert.assertEquals("x1", responseContent);
    // now the dataset must have a read and another open operation
    Assert.assertEquals(1, TrackingTable.getTracker(tableName, "read"));
    Assert.assertEquals(3, TrackingTable.getTracker(tableName, "open"));
    // The dataset that was instantiated by the DatasetSystemMetadataWriter should have been closed
    Assert.assertEquals(1, TrackingTable.getTracker(tableName, "close"));
    // stop all programs, they should both close the data set foo
    for (ProgramController controller : controllers) {
        controller.stop().get();
    }
    int timesOpened = TrackingTable.getTracker(tableName, "open");
    Assert.assertTrue(timesOpened >= 2);
    Assert.assertEquals(timesOpened, TrackingTable.getTracker(tableName, "close"));
    // now start the m/r job
    ProgramController controller = null;
    for (ProgramDescriptor programDescriptor : app.getPrograms()) {
        if (programDescriptor.getProgramId().getType().equals(ProgramType.MAPREDUCE)) {
            controller = AppFabricTestHelper.submit(app, programDescriptor.getSpecification().getClassName(), new BasicArguments(), TEMP_FOLDER_SUPPLIER);
        }
    }
    Assert.assertNotNull(controller);
    while (!controller.getState().equals(ProgramController.State.COMPLETED)) {
        TimeUnit.MILLISECONDS.sleep(100);
    }
    // M/r job is done, one mapper and the m/r client should have opened and closed the data set foo
    // we don't know the exact number of times opened, but it is at least once, and it must be closed the same number
    // of times.
    Assert.assertTrue(timesOpened < TrackingTable.getTracker(tableName, "open"));
    Assert.assertEquals(TrackingTable.getTracker(tableName, "open"), TrackingTable.getTracker(tableName, "close"));
    Assert.assertTrue(0 < TrackingTable.getTracker("bar", "open"));
    Assert.assertEquals(TrackingTable.getTracker("bar", "open"), TrackingTable.getTracker("bar", "close"));
}

Example 10 with QueueEntry

use of co.cask.cdap.data2.queue.QueueEntry in project cdap by caskdata.

the class HBaseQueueProducer method persist.

/**
 * Persist queue entries into HBase.
 */
@Override
protected int persist(Iterable<QueueEntry> entries, Transaction transaction) throws IOException {
    int count = 0;
    List<Put> puts = Lists.newArrayList();
    int bytes = 0;
    List<byte[]> rowKeys = Lists.newArrayList();
    long writePointer = transaction.getWritePointer();
    ensureValidTxLifetime(writePointer);
    for (QueueEntry entry : entries) {
        rowKeys.clear();
        queueStrategy.getRowKeys(consumerGroupConfigs, entry, queueRowPrefix, writePointer, count, rowKeys);
        rollbackKeys.addAll(rowKeys);
        byte[] metaData = QueueEntry.serializeHashKeys(entry.getHashKeys());
        for (byte[] rowKey : rowKeys) {
            // No need to write ts=writePointer, as the row key already contains the writePointer
            Put put = new Put(rowKey);
            put.add(QueueEntryRow.COLUMN_FAMILY, QueueEntryRow.DATA_COLUMN, entry.getData());
            put.add(QueueEntryRow.COLUMN_FAMILY, QueueEntryRow.META_COLUMN, metaData);
            puts.add(put);
            bytes += entry.getData().length;
        }
        count++;
    }
    hTable.put(puts);
    hTable.flushCommits();
    return bytes;
}