Examples with TopicId co.cask.cdap.proto.id.TopicId used on opensource projects

Example 6 with TopicId

use of co.cask.cdap.proto.id.TopicId in project cdap by caskdata.

the class LeaderElectionMessagingServiceTest method testTransition.

@Test
public void testTransition() throws Throwable {
    final TopicId topicId = NamespaceId.SYSTEM.topic("topic");
    Injector injector1 = createInjector(0);
    Injector injector2 = createInjector(1);
    // Start a messaging service, which would becomes leader
    ZKClientService zkClient1 = injector1.getInstance(ZKClientService.class);
    zkClient1.startAndWait();
    final MessagingService firstService = injector1.getInstance(MessagingService.class);
    if (firstService instanceof Service) {
        ((Service) firstService).startAndWait();
    }
    // Publish a message with the leader
    firstService.publish(StoreRequestBuilder.of(topicId).addPayloads("Testing1").build());
    // Start another messaging service, this one would be follower
    ZKClientService zkClient2 = injector2.getInstance(ZKClientService.class);
    zkClient2.startAndWait();
    final MessagingService secondService = injector2.getInstance(MessagingService.class);
    if (secondService instanceof Service) {
        ((Service) secondService).startAndWait();
    }
    // Try to call the follower, should get service unavailable.
    try {
        secondService.listTopics(NamespaceId.SYSTEM);
        Assert.fail("Expected service unavailable");
    } catch (ServiceUnavailableException e) {
    // Expected
    }
    // Make the ZK session timeout for the leader service. The second one should pickup.
    KillZKSession.kill(zkClient1.getZooKeeperSupplier().get(), zkClient1.getConnectString(), 10000);
    // Publish one more message and then fetch from the current leader
    List<String> messages = Retries.callWithRetries(new Retries.Callable<List<String>, Throwable>() {

        @Override
        public List<String> call() throws Throwable {
            secondService.publish(StoreRequestBuilder.of(topicId).addPayloads("Testing2").build());
            List<String> messages = new ArrayList<>();
            try (CloseableIterator<RawMessage> iterator = secondService.prepareFetch(topicId).fetch()) {
                while (iterator.hasNext()) {
                    messages.add(new String(iterator.next().getPayload(), "UTF-8"));
                }
            }
            return messages;
        }
    }, RetryStrategies.timeLimit(10, TimeUnit.SECONDS, RetryStrategies.fixDelay(1, TimeUnit.SECONDS)));
    Assert.assertEquals(Arrays.asList("Testing1", "Testing2"), messages);
    // Shutdown the current leader. The session timeout one should becomes leader again.
    if (secondService instanceof Service) {
        ((Service) secondService).stopAndWait();
    }
    // Try to fetch message from the current leader again.
    // Should see two messages (because the cache is cleared and fetch is from the backing store).
    messages = Retries.callWithRetries(new Retries.Callable<List<String>, Throwable>() {

        @Override
        public List<String> call() throws Throwable {
            List<String> messages = new ArrayList<>();
            try (CloseableIterator<RawMessage> iterator = firstService.prepareFetch(topicId).fetch()) {
                while (iterator.hasNext()) {
                    messages.add(new String(iterator.next().getPayload(), "UTF-8"));
                }
            }
            return messages;
        }
    }, RetryStrategies.timeLimit(10, TimeUnit.SECONDS, RetryStrategies.fixDelay(1, TimeUnit.SECONDS)));
    Assert.assertEquals(Arrays.asList("Testing1", "Testing2"), messages);
    zkClient1.stopAndWait();
    zkClient2.stopAndWait();
}

Example 7 with TopicId

use of co.cask.cdap.proto.id.TopicId in project cdap by caskdata.

the class ConcurrentMessageWriterTest method testMultiMaxSequence.

@Test
public void testMultiMaxSequence() throws IOException, InterruptedException {
    TopicId topicId = new NamespaceId("ns1").topic("t1");
    final TopicMetadata metadata = new TopicMetadata(topicId, new HashMap<String, String>(), 1);
    // This test the case when multiple StoreRequests combined exceeding the 65536 payload.
    // See testMaxSequence() for more details when it matters
    // Generate 3 StoreRequests, each with 43690 messages
    int msgCount = StoreRequestWriter.SEQUENCE_ID_LIMIT / 3 * 2;
    int requestCount = 3;
    List<StoreRequest> requests = new ArrayList<>();
    for (int i = 0; i < requestCount; i++) {
        List<String> payloads = new ArrayList<>(msgCount);
        for (int j = 0; j < msgCount; j++) {
            payloads.add(Integer.toString(j));
        }
        requests.add(new TestStoreRequest(topicId, payloads));
    }
    TestStoreRequestWriter testWriter = new TestStoreRequestWriter(new TimeProvider.IncrementalTimeProvider());
    // We use a custom metrics collector here to make all the persist calls reached the same latch,
    // since we know that the ConcurrentMessageWriter will emit a metrics "persist.requested" after enqueued but
    // before flushing.
    // This will make all requests batched together
    final CountDownLatch latch = new CountDownLatch(requestCount);
    final ConcurrentMessageWriter writer = new ConcurrentMessageWriter(testWriter, new MetricsCollector() {

        @Override
        public void increment(String metricName, long value) {
            if ("persist.requested".equals(metricName)) {
                latch.countDown();
                Uninterruptibles.awaitUninterruptibly(latch);
            }
        }

        @Override
        public void gauge(String metricName, long value) {
            LOG.info("MetricsContext.gauge: {} = {}", metricName, value);
        }
    });
    ExecutorService executor = Executors.newFixedThreadPool(3);
    for (final StoreRequest request : requests) {
        executor.submit(new Runnable() {

            @Override
            public void run() {
                try {
                    writer.persist(request, metadata);
                } catch (IOException e) {
                    LOG.error("Failed to persist", e);
                }
            }
        });
    }
    executor.shutdown();
    Assert.assertTrue(executor.awaitTermination(1, TimeUnit.MINUTES));
    // Validates all messages are being written
    List<RawMessage> messages = testWriter.getMessages().get(topicId);
    Assert.assertEquals(requestCount * msgCount, messages.size());
    // We expect the payload is in repeated sequence of [0..msgCount-1]
    int expectedPayload = 0;
    // The sequenceId should be (i % SEQUENCE_ID_LIMIT)
    for (int i = 0; i < messages.size(); i++) {
        RawMessage message = messages.get(i);
        MessageId messageId = new MessageId(message.getId());
        Assert.assertEquals(i / StoreRequestWriter.SEQUENCE_ID_LIMIT, messageId.getPublishTimestamp());
        Assert.assertEquals((short) (i % StoreRequestWriter.SEQUENCE_ID_LIMIT), messageId.getSequenceId());
        Assert.assertEquals(expectedPayload, Integer.parseInt(Bytes.toString(message.getPayload())));
        expectedPayload = (expectedPayload + 1) % msgCount;
    }
}

Example 8 with TopicId

use of co.cask.cdap.proto.id.TopicId in project cdap by caskdata.

the class MessageTableTest method testConcurrentWrites.

@Test
public void testConcurrentWrites() throws Exception {
    // Create two threads, each of them writes to a different topic with two events in one store call.
    // The iterators in the two threads would alternate to produce payload. This is for testing CDAP-12013
    ListeningExecutorService executor = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(2));
    final CyclicBarrier barrier = new CyclicBarrier(2);
    final CountDownLatch storeCompletion = new CountDownLatch(2);
    for (int i = 0; i < 2; i++) {
        final TopicId topicId = NamespaceId.DEFAULT.topic("testConcurrentWrites" + i);
        TopicMetadata metadata = new TopicMetadata(topicId, DEFAULT_PROPERTY);
        try (MetadataTable metadataTable = getMetadataTable()) {
            metadataTable.createTopic(metadata);
        }
        final int threadId = i;
        executor.submit(new Callable<Void>() {

            @Override
            public Void call() throws Exception {
                try (MessageTable messageTable = getMessageTable()) {
                    messageTable.store(new AbstractIterator<MessageTable.Entry>() {

                        int messageCount = 0;

                        @Override
                        protected MessageTable.Entry computeNext() {
                            if (messageCount >= 2) {
                                return endOfData();
                            }
                            try {
                                barrier.await();
                            } catch (Exception e) {
                                throw Throwables.propagate(e);
                            }
                            return new TestMessageEntry(topicId, GENERATION, System.currentTimeMillis(), messageCount, null, Bytes.toBytes("message " + threadId + " " + messageCount++));
                        }
                    });
                    storeCompletion.countDown();
                } catch (Exception e) {
                    LOG.error("Failed to store to MessageTable", e);
                }
                return null;
            }
        });
    }
    executor.shutdown();
    Assert.assertTrue(storeCompletion.await(30, TimeUnit.SECONDS));
    // Read from each topic. Each topic should have two messages
    for (int i = 0; i < 2; i++) {
        TopicId topicId = NamespaceId.DEFAULT.topic("testConcurrentWrites" + i);
        TopicMetadata metadata = new TopicMetadata(topicId, DEFAULT_PROPERTY);
        try (MessageTable messageTable = getMessageTable();
            CloseableIterator<MessageTable.Entry> iterator = messageTable.fetch(metadata, 0, 10, null)) {
            List<MessageTable.Entry> entries = Lists.newArrayList(iterator);
            Assert.assertEquals(2, entries.size());
            int count = 0;
            for (MessageTable.Entry entry : entries) {
                Assert.assertEquals("message " + i + " " + count++, Bytes.toString(entry.getPayload()));
            }
        }
    }
}

Example 9 with TopicId

use of co.cask.cdap.proto.id.TopicId in project cdap by caskdata.

the class MessageTableTest method testSingleMessage.

@Test
public void testSingleMessage() throws Exception {
    TopicId topicId = NamespaceId.DEFAULT.topic("singleMessage");
    TopicMetadata metadata = new TopicMetadata(topicId, DEFAULT_PROPERTY);
    String payload = "data";
    long txWritePtr = 123L;
    try (MessageTable table = getMessageTable();
        MetadataTable metadataTable = getMetadataTable()) {
        metadataTable.createTopic(metadata);
        List<MessageTable.Entry> entryList = new ArrayList<>();
        entryList.add(new TestMessageEntry(topicId, GENERATION, 0L, 0, txWritePtr, Bytes.toBytes(payload)));
        table.store(entryList.iterator());
        byte[] messageId = new byte[MessageId.RAW_ID_SIZE];
        MessageId.putRawId(0L, (short) 0, 0L, (short) 0, messageId, 0);
        try (CloseableIterator<MessageTable.Entry> iterator = table.fetch(metadata, new MessageId(messageId), false, 50, null)) {
            // Fetch not including the first message, expect empty
            Assert.assertFalse(iterator.hasNext());
        }
        try (CloseableIterator<MessageTable.Entry> iterator = table.fetch(metadata, new MessageId(messageId), true, 50, null)) {
            // Fetch including the first message, should get the message
            Assert.assertTrue(iterator.hasNext());
            MessageTable.Entry entry = iterator.next();
            Assert.assertArrayEquals(Bytes.toBytes(payload), entry.getPayload());
            Assert.assertFalse(iterator.hasNext());
        }
        try (CloseableIterator<MessageTable.Entry> iterator = table.fetch(metadata, 0, 50, null)) {
            // Fetch by time, should get the entry
            MessageTable.Entry entry = iterator.next();
            Assert.assertArrayEquals(Bytes.toBytes(payload), entry.getPayload());
            Assert.assertFalse(iterator.hasNext());
        }
        RollbackDetail rollbackDetail = new TestRollbackDetail(123L, 0, (short) 0, 0L, (short) 0);
        table.rollback(metadata, rollbackDetail);
        try (CloseableIterator<MessageTable.Entry> iterator = table.fetch(metadata, new MessageId(messageId), true, 50, null)) {
            // Fetching the message non-tx should provide a result even after deletion
            MessageTable.Entry entry = iterator.next();
            Assert.assertArrayEquals(Bytes.toBytes(payload), entry.getPayload());
            Assert.assertFalse(iterator.hasNext());
        }
        Transaction tx = new Transaction(200, 200, new long[0], new long[0], -1);
        try (CloseableIterator<MessageTable.Entry> iterator = table.fetch(metadata, new MessageId(messageId), true, 50, tx)) {
            // Fetching messages transactionally should not return any entry
            Assert.assertFalse(iterator.hasNext());
        }
    }
}

Example 10 with TopicId

use of co.cask.cdap.proto.id.TopicId in project cdap by caskdata.

the class PayloadTableTest method testSingleMessage.

@Test
public void testSingleMessage() throws Exception {
    TopicId topicId = NamespaceId.DEFAULT.topic("singlePayload");
    TopicMetadata metadata = new TopicMetadata(topicId, DEFAULT_PROPERTY);
    String payload = "data";
    long txWritePtr = 123L;
    try (MetadataTable metadataTable = getMetadataTable();
        PayloadTable table = getPayloadTable()) {
        metadataTable.createTopic(metadata);
        List<PayloadTable.Entry> entryList = new ArrayList<>();
        entryList.add(new TestPayloadEntry(topicId, GENERATION, txWritePtr, 1L, (short) 1, Bytes.toBytes(payload)));
        table.store(entryList.iterator());
        byte[] messageId = new byte[MessageId.RAW_ID_SIZE];
        MessageId.putRawId(0L, (short) 0, 0L, (short) 0, messageId, 0);
        try (CloseableIterator<PayloadTable.Entry> iterator = table.fetch(metadata, txWritePtr, new MessageId(messageId), false, Integer.MAX_VALUE)) {
            // Fetch not including the first message, expect empty
            Assert.assertFalse(iterator.hasNext());
        }
        try (CloseableIterator<PayloadTable.Entry> iterator = table.fetch(metadata, txWritePtr, new MessageId(messageId), true, Integer.MAX_VALUE)) {
            // Fetch including the first message
            Assert.assertTrue(iterator.hasNext());
            PayloadTable.Entry entry = iterator.next();
            Assert.assertArrayEquals(Bytes.toBytes(payload), entry.getPayload());
            Assert.assertEquals(txWritePtr, entry.getTransactionWritePointer());
            Assert.assertFalse(iterator.hasNext());
        }
    }
}