Examples with Consumer com.yahoo.pulsar.client.api.Consumer used on opensource projects

Example 51 with Consumer

use of com.yahoo.pulsar.client.api.Consumer in project pulsar by yahoo.

the class ClientErrorsTest method testLookupWithDisconnection.

@Test
public void testLookupWithDisconnection() throws Exception {
    final String brokerUrl = "pulsar://127.0.0.1:" + BROKER_SERVICE_PORT;
    PulsarClient client = PulsarClient.create(brokerUrl);
    final AtomicInteger counter = new AtomicInteger(0);
    String topic = "persistent://prop/use/ns/t1";
    mockBrokerService.setHandlePartitionLookup((ctx, lookup) -> {
        ctx.writeAndFlush(Commands.newPartitionMetadataResponse(0, lookup.getRequestId()));
    });
    mockBrokerService.setHandleLookup((ctx, lookup) -> {
        if (counter.incrementAndGet() == 1) {
            // piggyback unknown error to relay assertion failure
            ctx.close();
            return;
        }
        ctx.writeAndFlush(Commands.newLookupResponse(brokerUrl, null, true, LookupType.Connect, lookup.getRequestId()));
    });
    try {
        ConsumerConfiguration conf = new ConsumerConfiguration();
        conf.setSubscriptionType(SubscriptionType.Exclusive);
        Consumer consumer = client.subscribe(topic, "sub1", conf);
    } catch (Exception e) {
        if (e.getMessage().equals(ASSERTION_ERROR)) {
            fail("Subscribe should not retry on persistence error");
        }
        assertTrue(e instanceof PulsarClientException.BrokerPersistenceException);
    }
    mockBrokerService.resetHandlePartitionLookup();
    mockBrokerService.resetHandleLookup();
    client.close();
}

Example 52 with Consumer

use of com.yahoo.pulsar.client.api.Consumer in project pulsar by yahoo.

the class BrokerClientIntegrationTest method testUnsupportedBatchMessageConsumer.

/**
     * It verifies that consumer which doesn't support batch-message:
     * <p>
     * 1. broker disconnects that consumer
     * <p>
     * 2. redeliver all those messages to other supported consumer under the same subscription
     * 
     * @param subType
     * @throws Exception
     */
@Test(timeOut = 7000, dataProvider = "subType")
public void testUnsupportedBatchMessageConsumer(SubscriptionType subType) throws Exception {
    log.info("-- Starting {} test --", methodName);
    final int batchMessageDelayMs = 1000;
    final String topicName = "persistent://my-property/use/my-ns/my-topic1";
    final String subscriptionName = "my-subscriber-name" + subType;
    ConsumerConfiguration conf = new ConsumerConfiguration();
    conf.setSubscriptionType(subType);
    ConsumerImpl consumer1 = (ConsumerImpl) pulsarClient.subscribe(topicName, subscriptionName, conf);
    ProducerConfiguration producerConf = new ProducerConfiguration();
    if (batchMessageDelayMs != 0) {
        producerConf.setBatchingEnabled(true);
        producerConf.setBatchingMaxPublishDelay(batchMessageDelayMs, TimeUnit.MILLISECONDS);
        producerConf.setBatchingMaxMessages(20);
    }
    Producer producer = pulsarClient.createProducer(topicName, new ProducerConfiguration());
    Producer batchProducer = pulsarClient.createProducer(topicName, producerConf);
    // update consumer's version to incompatible batch-message version = Version.V3
    Topic topic = pulsar.getBrokerService().getTopic(topicName).get();
    com.yahoo.pulsar.broker.service.Consumer brokerConsumer = topic.getSubscriptions().get(subscriptionName).getConsumers().get(0);
    Field cnxField = com.yahoo.pulsar.broker.service.Consumer.class.getDeclaredField("cnx");
    cnxField.setAccessible(true);
    PulsarHandler cnx = (PulsarHandler) cnxField.get(brokerConsumer);
    Field versionField = PulsarHandler.class.getDeclaredField("remoteEndpointProtocolVersion");
    versionField.setAccessible(true);
    versionField.set(cnx, 3);
    // (1) send non-batch message: consumer should be able to consume
    for (int i = 0; i < 10; i++) {
        String message = "my-message-" + i;
        producer.send(message.getBytes());
    }
    Set<String> messageSet = Sets.newHashSet();
    Message msg = null;
    for (int i = 0; i < 10; i++) {
        msg = consumer1.receive(1, TimeUnit.SECONDS);
        String receivedMessage = new String(msg.getData());
        String expectedMessage = "my-message-" + i;
        testMessageOrderAndDuplicates(messageSet, receivedMessage, expectedMessage);
        consumer1.acknowledge(msg);
    }
    // Also set clientCnx of the consumer to null so, it avoid reconnection so, other consumer can consume for
    // verification
    consumer1.setClientCnx(null);
    // (2) send batch-message which should not be able to consume: as broker will disconnect the consumer
    for (int i = 0; i < 10; i++) {
        String message = "my-message-" + i;
        batchProducer.sendAsync(message.getBytes());
    }
    Thread.sleep(batchMessageDelayMs);
    // consumer should have not received any message as it should have been disconnected
    msg = consumer1.receive(2, TimeUnit.SECONDS);
    assertNull(msg);
    // subscrie consumer2 with supporting batch version
    pulsarClient = PulsarClient.create(brokerUrl.toString());
    Consumer consumer2 = pulsarClient.subscribe(topicName, subscriptionName, conf);
    messageSet.clear();
    for (int i = 0; i < 10; i++) {
        msg = consumer2.receive(1, TimeUnit.SECONDS);
        String receivedMessage = new String(msg.getData());
        log.debug("Received message: [{}]", receivedMessage);
        String expectedMessage = "my-message-" + i;
        testMessageOrderAndDuplicates(messageSet, receivedMessage, expectedMessage);
        consumer2.acknowledge(msg);
    }
    consumer2.close();
    producer.close();
    batchProducer.close();
    log.info("-- Exiting {} test --", methodName);
}

Example 53 with Consumer

use of com.yahoo.pulsar.client.api.Consumer in project pulsar by yahoo.

the class ConsumeBaseExceptionTest method testClosedConsumer.

@Test
public void testClosedConsumer() throws PulsarClientException {
    Consumer consumer = null;
    consumer = pulsarClient.subscribe("persistent://prop/cluster/ns/topicName", "my-subscription");
    consumer.close();
    Assert.assertTrue(consumer.receiveAsync().isCompletedExceptionally());
    try {
        consumer.receiveAsync().exceptionally(e -> {
            Assert.assertTrue(e instanceof PulsarClientException.AlreadyClosedException);
            return null;
        }).get();
    } catch (Exception e) {
        Assert.fail();
    }
}

Example 54 with Consumer

use of com.yahoo.pulsar.client.api.Consumer in project pulsar by yahoo.

the class MessageIdTest method testChecksumVersionComptability.

/**
     * Verifies: different versions of broker-deployment (one broker understands Checksum and other
     * doesn't in that case remove checksum before sending to broker-2)
     * 
     * client first produce message with checksum and then retries to send message due to connection unavailable. But this time, if
     * broker doesn't understand checksum: then client should remove checksum from the message before sending to broker.
     * 
     * 1. stop broker 
     * 2. client compute checksum and add into message 
     * 3. produce 2 messages and corrupt 1 message 
     * 4. start broker with lower version (which doesn't support checksum) 
     * 5. client reconnects to broker and due to incompatibility of version: removes checksum from message 
     * 6. broker doesn't do checksum validation and persist message 
     * 7. client receives ack
     * 
     * @throws Exception
     */
@Test
public void testChecksumVersionComptability() throws Exception {
    final String topicName = "persistent://prop/use/ns-abc/topic1";
    // 1. producer connect
    ProducerImpl prod = (ProducerImpl) pulsarClient.createProducer(topicName);
    ProducerImpl producer = spy(prod);
    // return higher version compare to broker : so, it forces client-producer to remove checksum from payload
    doReturn(producer.brokerChecksumSupportedVersion() + 1).when(producer).brokerChecksumSupportedVersion();
    doAnswer(invocationOnMock -> prod.getState()).when(producer).getState();
    doAnswer(invocationOnMock -> prod.getClientCnx()).when(producer).getClientCnx();
    doAnswer(invocationOnMock -> prod.cnx()).when(producer).cnx();
    Consumer consumer = pulsarClient.subscribe(topicName, "my-sub");
    // Stop the broker, and publishes messages. Messages are accumulated in the producer queue and they're checksums
    // would have already been computed. If we change the message content at that point, it should result in a
    // checksum validation error
    stopBroker();
    // stop timer to auto-reconnect as let spy-Producer connect to broker manually so, spy-producer object can get
    // mock-value from brokerChecksumSupportedVersion
    ((PulsarClientImpl) pulsarClient).timer().stop();
    ClientCnx mockClientCnx = spy(new ClientCnx((PulsarClientImpl) pulsarClient));
    doReturn(producer.brokerChecksumSupportedVersion() - 1).when(mockClientCnx).getRemoteEndpointProtocolVersion();
    prod.setClientCnx(mockClientCnx);
    Message msg1 = MessageBuilder.create().setContent("message-1".getBytes()).build();
    CompletableFuture<MessageId> future1 = producer.sendAsync(msg1);
    Message msg2 = MessageBuilder.create().setContent("message-2".getBytes()).build();
    CompletableFuture<MessageId> future2 = producer.sendAsync(msg2);
    // corrupt the message
    // new content would be 'message-3'
    msg2.getData()[msg2.getData().length - 1] = '3';
    prod.setClientCnx(null);
    // Restart the broker to have the messages published
    startBroker();
    // grab broker connection with mocked producer which has higher version compare to broker
    prod.grabCnx();
    try {
        // it should not fail: as due to unsupported version of broker: client removes checksum and broker should
        // ignore the checksum validation
        future1.get();
        future2.get();
    } catch (Exception e) {
        e.printStackTrace();
        fail("Broker shouldn't verify checksum for corrupted message and it shouldn't fail");
    }
    ((ConsumerImpl) consumer).grabCnx();
    // We should only receive msg1
    Message msg = consumer.receive(1, TimeUnit.SECONDS);
    assertEquals(new String(msg.getData()), "message-1");
    msg = consumer.receive(1, TimeUnit.SECONDS);
    assertEquals(new String(msg.getData()), "message-3");
}

Example 55 with Consumer

use of com.yahoo.pulsar.client.api.Consumer in project pulsar by yahoo.

the class MessageIdTest method testCorruptMessageRemove.

/**
     * Verifies: if message is corrupted before sending to broker and if broker gives checksum error: then
     * 1. Client-Producer recomputes checksum with modified data
     * 2. Retry message-send again
     * 3. Broker verifies checksum 
     * 4. client receives send-ack success
     * 
     * @throws Exception
     */
@Test
public void testCorruptMessageRemove() throws Exception {
    final String topicName = "persistent://prop/use/ns-abc/retry-topic";
    ProducerConfiguration config = new ProducerConfiguration();
    config.setSendTimeout(10, TimeUnit.MINUTES);
    // 1. producer connect
    Producer prod = pulsarClient.createProducer(topicName, config);
    ProducerImpl producer = spy((ProducerImpl) prod);
    Field producerIdField = ProducerImpl.class.getDeclaredField("producerId");
    producerIdField.setAccessible(true);
    long producerId = (long) producerIdField.get(producer);
    // registered spy ProducerImpl
    producer.cnx().registerProducer(producerId, producer);
    Consumer consumer = pulsarClient.subscribe(topicName, "my-sub");
    // 2. Stop the broker, and publishes messages. Messages are accumulated in the producer queue and they're
    // checksums
    // would have already been computed. If we change the message content at that point, it should result in a
    // checksum validation error
    // enable checksum at producer
    stopBroker();
    Message msg = MessageBuilder.create().setContent("message-1".getBytes()).build();
    CompletableFuture<MessageId> future = producer.sendAsync(msg);
    // 3. corrupt the message
    // new content would be 'message-3'
    msg.getData()[msg.getData().length - 1] = '2';
    // 4. Restart the broker to have the messages published
    startBroker();
    try {
        future.get();
        fail("send message should have failed with checksum excetion");
    } catch (Exception e) {
        if (e.getCause() instanceof PulsarClientException.ChecksumException) {
        //ok (callback should get checksum exception as message was modified and corrupt)
        } else {
            fail("Callback should have only failed with ChecksumException", e);
        }
    }
    // 5. Verify
    // (5.1) Verify: producer's recoverChecksumError and updateChecksum invoked
    verify(producer, times(1)).recoverChecksumError(any(), anyLong());
    verify(producer, times(1)).verifyLocalBufferIsNotCorrupted(any());
    /**
         * (5.3) verify: ProducerImpl.verifyLocalBufferIsNotCorrupted() => validates if message
         * is corrupt
         */
    MessageImpl msg2 = (MessageImpl) MessageBuilder.create().setContent("message-1".getBytes()).build();
    ByteBuf payload = msg2.getDataBuffer();
    Builder metadataBuilder = ((MessageImpl) msg).getMessageBuilder();
    MessageMetadata msgMetadata = metadataBuilder.setProducerName("test").setSequenceId(1).setPublishTime(10L).build();
    ByteBuf cmd = Commands.newSend(producerId, 1, 1, ChecksumType.Crc32c, msgMetadata, payload);
    // (a) create OpSendMsg with message-data : "message-1"
    OpSendMsg op = OpSendMsg.create(((MessageImpl) msg), cmd, 1, null);
    // a.verify: as message is not corrupt: no need to update checksum
    assertTrue(producer.verifyLocalBufferIsNotCorrupted(op));
    // (b) corrupt message
    // new content would be 'message-2'
    msg2.getData()[msg2.getData().length - 1] = '2';
    // b. verify: as message is corrupt: update checksum
    assertFalse(producer.verifyLocalBufferIsNotCorrupted(op));
    assertEquals(producer.getPendingQueueSize(), 0);
    // [2] test-recoverChecksumError functionality
    stopBroker();
    MessageImpl msg1 = (MessageImpl) MessageBuilder.create().setContent("message-1".getBytes()).build();
    future = producer.sendAsync(msg1);
    ClientCnx cnx = spy(new ClientCnx((PulsarClientImpl) pulsarClient) {
    });
    String exc = "broker is already stopped";
    // when client-try to recover checksum by resending to broker: throw exception as broker is stopped
    doThrow(new IllegalStateException(exc)).when(cnx).ctx();
    try {
        producer.recoverChecksumError(cnx, 1);
        fail("it should call : resendMessages() => which should throw above mocked exception");
    } catch (IllegalStateException e) {
        assertEquals(exc, e.getMessage());
    }
    producer.close();
    consumer.close();
    // clean reference of mocked producer
    producer = null;
}