Examples with StoreRequest co.cask.cdap.messaging.StoreRequest used on opensource projects

Example 1 with StoreRequest

use of co.cask.cdap.messaging.StoreRequest 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 2 with StoreRequest

use of co.cask.cdap.messaging.StoreRequest in project cdap by caskdata.

the class StoreHandler method store.

@POST
@Path("/store")
public void store(HttpRequest request, HttpResponder responder, @PathParam("namespace") String namespace, @PathParam("topic") String topic) throws Exception {
    TopicId topicId = new NamespaceId(namespace).topic(topic);
    StoreRequest storeRequest = createStoreRequest(topicId, request);
    // It must be transactional with payload for store request
    if (!storeRequest.isTransactional() || !storeRequest.hasNext()) {
        throw new BadRequestException("Store request must be transactional with payload. Topic: " + topicId);
    }
    messagingService.storePayload(storeRequest);
    responder.sendStatus(HttpResponseStatus.OK);
}

Example 3 with StoreRequest

use of co.cask.cdap.messaging.StoreRequest in project cdap by caskdata.

the class StoreHandler method publish.

@POST
@Path("/publish")
public void publish(HttpRequest request, HttpResponder responder, @PathParam("namespace") String namespace, @PathParam("topic") String topic) throws Exception {
    TopicId topicId = new NamespaceId(namespace).topic(topic);
    StoreRequest storeRequest = createStoreRequest(topicId, request);
    // Empty payload is only allowed for transactional publish
    if (!storeRequest.isTransactional() && !storeRequest.hasNext()) {
        throw new BadRequestException("Empty payload is only allowed for publishing transactional message. Topic: " + topicId);
    }
    // Publish the message and response with the rollback information
    RollbackDetail rollbackInfo = messagingService.publish(storeRequest);
    if (rollbackInfo == null) {
        // Non-tx publish doesn't have rollback info.
        responder.sendStatus(HttpResponseStatus.OK);
        return;
    }
    ChannelBuffer response = encodeRollbackDetail(rollbackInfo);
    responder.sendContent(HttpResponseStatus.OK, response, "avro/binary", null);
}