Examples with PersistentTopic org.apache.pulsar.broker.service.persistent.PersistentTopic used on opensource projects

Example 51 with PersistentTopic

use of org.apache.pulsar.broker.service.persistent.PersistentTopic in project incubator-pulsar by apache.

the class SimpleProducerConsumerTest method testDeactivatingBacklogConsumer.

@Test
public void testDeactivatingBacklogConsumer() throws Exception {
    log.info("-- Starting {} test --", methodName);
    final long batchMessageDelayMs = 100;
    final int receiverSize = 10;
    final String topicName = "cache-topic";
    final String topic = "persistent://my-property/use/my-ns/" + topicName;
    final String sub1 = "faster-sub1";
    final String sub2 = "slower-sub2";
    // 1. Subscriber Faster subscriber: let it consume all messages immediately
    Consumer<byte[]> subscriber1 = pulsarClient.newConsumer().topic("persistent://my-property/use/my-ns/" + topicName).subscriptionName(sub1).subscriptionType(SubscriptionType.Shared).receiverQueueSize(receiverSize).subscribe();
    // 1.b. Subscriber Slow subscriber:
    Consumer<byte[]> subscriber2 = pulsarClient.newConsumer().topic("persistent://my-property/use/my-ns/" + topicName).subscriptionName(sub2).subscriptionType(SubscriptionType.Shared).receiverQueueSize(receiverSize).subscribe();
    ProducerBuilder<byte[]> producerBuilder = pulsarClient.newProducer().topic(topic);
    if (batchMessageDelayMs != 0) {
        producerBuilder.enableBatching(true).batchingMaxPublishDelay(batchMessageDelayMs, TimeUnit.MILLISECONDS).batchingMaxMessages(5);
    }
    Producer<byte[]> producer = producerBuilder.create();
    PersistentTopic topicRef = (PersistentTopic) pulsar.getBrokerService().getTopicReference(topic);
    ManagedLedgerImpl ledger = (ManagedLedgerImpl) topicRef.getManagedLedger();
    // reflection to set/get cache-backlog fields value:
    final long maxMessageCacheRetentionTimeMillis = 100;
    Field backlogThresholdField = ManagedLedgerImpl.class.getDeclaredField("maxActiveCursorBacklogEntries");
    backlogThresholdField.setAccessible(true);
    Field field = ManagedLedgerImpl.class.getDeclaredField("maxMessageCacheRetentionTimeMillis");
    field.setAccessible(true);
    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
    field.set(ledger, maxMessageCacheRetentionTimeMillis);
    final long maxActiveCursorBacklogEntries = (long) backlogThresholdField.get(ledger);
    Message<byte[]> msg = null;
    final int totalMsgs = (int) maxActiveCursorBacklogEntries + receiverSize + 1;
    // 2. Produce messages
    for (int i = 0; i < totalMsgs; i++) {
        String message = "my-message-" + i;
        producer.send(message.getBytes());
    }
    // 3. Consume messages: at Faster subscriber
    for (int i = 0; i < totalMsgs; i++) {
        msg = subscriber1.receive(100, TimeUnit.MILLISECONDS);
        subscriber1.acknowledge(msg);
    }
    // wait : so message can be eligible to to be evict from cache
    Thread.sleep(maxMessageCacheRetentionTimeMillis);
    // 4. deactivate subscriber which has built the backlog
    ledger.checkBackloggedCursors();
    Thread.sleep(100);
    // 5. verify: active subscribers
    Set<String> activeSubscriber = Sets.newHashSet();
    ledger.getActiveCursors().forEach(c -> activeSubscriber.add(c.getName()));
    assertTrue(activeSubscriber.contains(sub1));
    assertFalse(activeSubscriber.contains(sub2));
    // 6. consume messages : at slower subscriber
    for (int i = 0; i < totalMsgs; i++) {
        msg = subscriber2.receive(100, TimeUnit.MILLISECONDS);
        subscriber2.acknowledge(msg);
    }
    ledger.checkBackloggedCursors();
    activeSubscriber.clear();
    ledger.getActiveCursors().forEach(c -> activeSubscriber.add(c.getName()));
    assertTrue(activeSubscriber.contains(sub1));
    assertTrue(activeSubscriber.contains(sub2));
}

Example 52 with PersistentTopic

use of org.apache.pulsar.broker.service.persistent.PersistentTopic in project incubator-pulsar by apache.

the class SimpleProducerConsumerTest method testActiveAndInActiveConsumerEntryCacheBehavior.

/**
 * Usecase 1: Only 1 Active Subscription - 1 subscriber - Produce Messages - EntryCache should cache messages -
 * EntryCache should be cleaned : Once active subscription consumes messages
 *
 * Usecase 2: 2 Active Subscriptions (faster and slower) and slower gets closed - 2 subscribers - Produce Messages -
 * 1 faster-subscriber consumes all messages and another slower-subscriber none - EntryCache should have cached
 * messages as slower-subscriber has not consumed messages yet - close slower-subscriber - EntryCache should be
 * cleared
 *
 * @throws Exception
 */
@Test
public void testActiveAndInActiveConsumerEntryCacheBehavior() throws Exception {
    log.info("-- Starting {} test --", methodName);
    final long batchMessageDelayMs = 100;
    final int receiverSize = 10;
    final String topicName = "cache-topic";
    final String sub1 = "faster-sub1";
    final String sub2 = "slower-sub2";
    /**
     ********** usecase-1: ************
     */
    // 1. Subscriber Faster subscriber
    Consumer<byte[]> subscriber1 = pulsarClient.newConsumer().topic("persistent://my-property/use/my-ns/" + topicName).subscriptionName(sub1).subscriptionType(SubscriptionType.Shared).receiverQueueSize(receiverSize).subscribe();
    final String topic = "persistent://my-property/use/my-ns/" + topicName;
    ProducerBuilder<byte[]> producerBuilder = pulsarClient.newProducer().topic(topic);
    if (batchMessageDelayMs != 0) {
        producerBuilder.batchingMaxPublishDelay(batchMessageDelayMs, TimeUnit.MILLISECONDS);
        producerBuilder.batchingMaxMessages(5);
        producerBuilder.enableBatching(true);
    }
    Producer<byte[]> producer = producerBuilder.create();
    PersistentTopic topicRef = (PersistentTopic) pulsar.getBrokerService().getTopicReference(topic);
    ManagedLedgerImpl ledger = (ManagedLedgerImpl) topicRef.getManagedLedger();
    Field cacheField = ManagedLedgerImpl.class.getDeclaredField("entryCache");
    cacheField.setAccessible(true);
    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.setInt(cacheField, cacheField.getModifiers() & ~Modifier.FINAL);
    EntryCacheImpl entryCache = spy((EntryCacheImpl) cacheField.get(ledger));
    cacheField.set(ledger, entryCache);
    Message<byte[]> msg = null;
    // 2. Produce messages
    for (int i = 0; i < 30; i++) {
        String message = "my-message-" + i;
        producer.send(message.getBytes());
    }
    // 3. Consume messages
    for (int i = 0; i < 30; i++) {
        msg = subscriber1.receive(5, TimeUnit.SECONDS);
        subscriber1.acknowledge(msg);
    }
    // Verify: EntryCache has been invalidated
    verify(entryCache, atLeastOnce()).invalidateEntries(any());
    // sleep for a second: as ledger.updateCursorRateLimit RateLimiter will allow to invoke cursor-update after a
    // second
    // 
    Thread.sleep(1000);
    // produce-consume one more message to trigger : ledger.internalReadFromLedger(..) which updates cursor and
    // EntryCache
    producer.send("message".getBytes());
    msg = subscriber1.receive(5, TimeUnit.SECONDS);
    // Verify: cache has to be cleared as there is no message needs to be consumed by active subscriber
    assertEquals(entryCache.getSize(), 0, 1);
    /**
     ********** usecase-2: ************
     */
    // 1.b Subscriber slower-subscriber
    Consumer<byte[]> subscriber2 = pulsarClient.newConsumer().topic("persistent://my-property/use/my-ns/" + topicName).subscriptionName(sub2).subscribe();
    // Produce messages
    final int moreMessages = 10;
    for (int i = 0; i < receiverSize + moreMessages; i++) {
        String message = "my-message-" + i;
        producer.send(message.getBytes());
    }
    // Consume messages
    for (int i = 0; i < receiverSize + moreMessages; i++) {
        msg = subscriber1.receive(5, TimeUnit.SECONDS);
        subscriber1.acknowledge(msg);
    }
    // sleep for a second: as ledger.updateCursorRateLimit RateLimiter will allow to invoke cursor-update after a
    // second
    // 
    Thread.sleep(1000);
    // produce-consume one more message to trigger : ledger.internalReadFromLedger(..) which updates cursor and
    // EntryCache
    producer.send("message".getBytes());
    msg = subscriber1.receive(5, TimeUnit.SECONDS);
    // Verify: as active-subscriber2 has not consumed messages: EntryCache must have those entries in cache
    assertTrue(entryCache.getSize() != 0);
    // 3.b Close subscriber2: which will trigger cache to clear the cache
    subscriber2.close();
    // retry strategically until broker clean up closed subscribers and invalidate all cache entries
    retryStrategically((test) -> entryCache.getSize() == 0, 5, 100);
    // Verify: EntryCache should be cleared
    assertTrue(entryCache.getSize() == 0);
    subscriber1.close();
    log.info("-- Exiting {} test --", methodName);
}

Example 53 with PersistentTopic

use of org.apache.pulsar.broker.service.persistent.PersistentTopic in project incubator-pulsar by apache.

the class MessageDispatchThrottlingTest method testClusterPolicyOverrideConfiguration.

/**
 * <pre>
 * It verifies that cluster-throttling value gets considered when namespace-policy throttling is disabled.
 *
 *  1. Update cluster-throttling-config: topic rate-limiter has cluster-config
 *  2. Update namespace-throttling-config: topic rate-limiter has namespace-config
 *  3. Disable namespace-throttling-config: topic rate-limiter has cluster-config
 *  4. Create new topic with disable namespace-config and enabled cluster-config: it takes cluster-config
 *
 * </pre>
 *
 * @throws Exception
 */
@Test
public void testClusterPolicyOverrideConfiguration() throws Exception {
    log.info("-- Starting {} test --", methodName);
    final String namespace = "my-property/use/throttling_ns";
    final String topicName1 = "persistent://" + namespace + "/throttlingOverride1";
    final String topicName2 = "persistent://" + namespace + "/throttlingOverride2";
    final int clusterMessageRate = 100;
    int initValue = pulsar.getConfiguration().getDispatchThrottlingRatePerTopicInMsg();
    // (1) Update message-dispatch-rate limit
    admin.brokers().updateDynamicConfiguration("dispatchThrottlingRatePerTopicInMsg", Integer.toString(clusterMessageRate));
    // sleep incrementally as zk-watch notification is async and may take some time
    for (int i = 0; i < 5; i++) {
        if (pulsar.getConfiguration().getDispatchThrottlingRatePerTopicInMsg() == initValue) {
            Thread.sleep(50 + (i * 10));
        }
    }
    Assert.assertNotEquals(pulsar.getConfiguration().getDispatchThrottlingRatePerTopicInMsg(), initValue);
    admin.namespaces().createNamespace(namespace);
    // create producer and topic
    Producer<byte[]> producer = pulsarClient.newProducer().topic(topicName1).create();
    PersistentTopic topic = (PersistentTopic) pulsar.getBrokerService().getTopic(topicName1).get();
    // (1) Update dispatch rate on cluster-config update
    Assert.assertEquals(clusterMessageRate, topic.getDispatchRateLimiter().getDispatchRateOnMsg());
    // (2) Update namespace throttling limit
    int nsMessageRate = 500;
    DispatchRate dispatchRate = new DispatchRate(nsMessageRate, 0, 1);
    admin.namespaces().setDispatchRate(namespace, dispatchRate);
    for (int i = 0; i < 5; i++) {
        if (topic.getDispatchRateLimiter().getDispatchRateOnMsg() != nsMessageRate) {
            Thread.sleep(50 + (i * 10));
        }
    }
    Assert.assertEquals(nsMessageRate, topic.getDispatchRateLimiter().getDispatchRateOnMsg());
    // (3) Disable namespace throttling limit will force to take cluster-config
    dispatchRate = new DispatchRate(0, 0, 1);
    admin.namespaces().setDispatchRate(namespace, dispatchRate);
    for (int i = 0; i < 5; i++) {
        if (topic.getDispatchRateLimiter().getDispatchRateOnMsg() == nsMessageRate) {
            Thread.sleep(50 + (i * 10));
        }
    }
    Assert.assertEquals(clusterMessageRate, topic.getDispatchRateLimiter().getDispatchRateOnMsg());
    // (5) Namespace throttling is disabled so, new topic should take cluster throttling limit
    Producer<byte[]> producer2 = pulsarClient.newProducer().topic(topicName2).create();
    PersistentTopic topic2 = (PersistentTopic) pulsar.getBrokerService().getTopic(topicName2).get();
    Assert.assertEquals(clusterMessageRate, topic2.getDispatchRateLimiter().getDispatchRateOnMsg());
    producer.close();
    producer2.close();
    log.info("-- Exiting {} test --", methodName);
}

Example 54 with PersistentTopic

use of org.apache.pulsar.broker.service.persistent.PersistentTopic in project incubator-pulsar by apache.

the class MessageDispatchThrottlingTest method testClusterMsgByteRateLimitingClusterConfig.

/**
 * It verifies that dispatch-rate throttling with cluster-configuration
 *
 * @param subscription
 * @param dispatchRateType
 * @throws Exception
 */
@Test()
public void testClusterMsgByteRateLimitingClusterConfig() throws Exception {
    log.info("-- Starting {} test --", methodName);
    final String namespace = "my-property/use/throttling_ns";
    final String topicName = "persistent://" + namespace + "/throttlingBlock";
    final int messageRate = 5;
    // 1MB rate enough to let all msg to be delivered
    final long byteRate = 1024 * 1024;
    int initValue = pulsar.getConfiguration().getDispatchThrottlingRatePerTopicInMsg();
    // (1) Update message-dispatch-rate limit
    admin.brokers().updateDynamicConfiguration("dispatchThrottlingRatePerTopicInMsg", Integer.toString(messageRate));
    admin.brokers().updateDynamicConfiguration("dispatchThrottlingRatePerTopicInByte", Long.toString(byteRate));
    // sleep incrementally as zk-watch notification is async and may take some time
    for (int i = 0; i < 5; i++) {
        if (pulsar.getConfiguration().getDispatchThrottlingRatePerTopicInMsg() == initValue) {
            Thread.sleep(50 + (i * 10));
        }
    }
    Assert.assertNotEquals(pulsar.getConfiguration().getDispatchThrottlingRatePerTopicInMsg(), initValue);
    admin.namespaces().createNamespace(namespace);
    // create producer and topic
    Producer<byte[]> producer = pulsarClient.newProducer().topic(topicName).create();
    PersistentTopic topic = (PersistentTopic) pulsar.getBrokerService().getTopic(topicName).get();
    int numMessages = 500;
    final AtomicInteger totalReceived = new AtomicInteger(0);
    Consumer<byte[]> consumer = pulsarClient.newConsumer().topic(topicName).subscriptionName("my-subscriber-name").subscriptionType(SubscriptionType.Shared).messageListener((c1, msg) -> {
        Assert.assertNotNull(msg, "Message cannot be null");
        String receivedMessage = new String(msg.getData());
        log.debug("Received message [{}] in the listener", receivedMessage);
        totalReceived.incrementAndGet();
    }).subscribe();
    // deactive cursors
    deactiveCursors((ManagedLedgerImpl) topic.getManagedLedger());
    // Asynchronously produce messages
    for (int i = 0; i < numMessages; i++) {
        final String message = "my-message-" + i;
        producer.send(message.getBytes());
    }
    // it can make sure that consumer had enough time to consume message but couldn't consume due to throttling
    Thread.sleep(500);
    // consumer should not have received all published message due to message-rate throttling
    Assert.assertNotEquals(totalReceived.get(), numMessages);
    consumer.close();
    producer.close();
    pulsar.getConfiguration().setDispatchThrottlingRatePerTopicInMsg(initValue);
    log.info("-- Exiting {} test --", methodName);
}

Example 55 with PersistentTopic

use of org.apache.pulsar.broker.service.persistent.PersistentTopic in project incubator-pulsar by apache.

the class MessageDispatchThrottlingTest method testMessageRateLimitingNotReceiveAllMessages.

/**
 * verify: consumer should not receive all messages due to message-rate throttling
 *
 * @param subscription
 * @throws Exception
 */
@Test(dataProvider = "subscriptionAndDispatchRateType", timeOut = 5000)
public void testMessageRateLimitingNotReceiveAllMessages(SubscriptionType subscription, DispatchRateType dispatchRateType) throws Exception {
    log.info("-- Starting {} test --", methodName);
    final String namespace = "my-property/use/throttling_ns";
    final String topicName = "persistent://" + namespace + "/throttlingBlock";
    final int messageRate = 100;
    DispatchRate dispatchRate = null;
    if (DispatchRateType.messageRate.equals(dispatchRateType)) {
        dispatchRate = new DispatchRate(messageRate, -1, 360);
    } else {
        dispatchRate = new DispatchRate(-1, messageRate, 360);
    }
    admin.namespaces().createNamespace(namespace);
    admin.namespaces().setDispatchRate(namespace, dispatchRate);
    // create producer and topic
    Producer<byte[]> producer = pulsarClient.newProducer().topic(topicName).create();
    PersistentTopic topic = (PersistentTopic) pulsar.getBrokerService().getTopic(topicName).get();
    boolean isMessageRateUpdate = false;
    int retry = 5;
    for (int i = 0; i < retry; i++) {
        if (topic.getDispatchRateLimiter().getDispatchRateOnMsg() > 0 || topic.getDispatchRateLimiter().getDispatchRateOnByte() > 0) {
            isMessageRateUpdate = true;
            break;
        } else {
            if (i != retry - 1) {
                Thread.sleep(100);
            }
        }
    }
    Assert.assertTrue(isMessageRateUpdate);
    Assert.assertEquals(admin.namespaces().getDispatchRate(namespace), dispatchRate);
    int numMessages = 500;
    final AtomicInteger totalReceived = new AtomicInteger(0);
    Consumer<byte[]> consumer = pulsarClient.newConsumer().topic(topicName).subscriptionName("my-subscriber-name").subscriptionType(subscription).messageListener((c1, msg) -> {
        Assert.assertNotNull(msg, "Message cannot be null");
        String receivedMessage = new String(msg.getData());
        log.debug("Received message [{}] in the listener", receivedMessage);
        totalReceived.incrementAndGet();
    }).subscribe();
    // deactive cursors
    deactiveCursors((ManagedLedgerImpl) topic.getManagedLedger());
    // Asynchronously produce messages
    for (int i = 0; i < numMessages; i++) {
        producer.send(new byte[80]);
    }
    // consumer should not have received all publihsed message due to message-rate throttling
    Assert.assertTrue(totalReceived.get() < messageRate * 2);
    consumer.close();
    producer.close();
    log.info("-- Exiting {} test --", methodName);
}