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

Example 11 with Consumer

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

the class PersistentTopicE2ETest method testGC.

@Test
public void testGC() throws Exception {
    // 1. Simple successful GC
    String topicName = "persistent://prop/use/ns-abc/topic-10";
    Producer producer = pulsarClient.createProducer(topicName);
    producer.close();
    assertNotNull(pulsar.getBrokerService().getTopicReference(topicName));
    runGC();
    assertNull(pulsar.getBrokerService().getTopicReference(topicName));
    // 2. Topic is not GCed with live connection
    ConsumerConfiguration conf = new ConsumerConfiguration();
    conf.setSubscriptionType(SubscriptionType.Exclusive);
    String subName = "sub1";
    Consumer consumer = pulsarClient.subscribe(topicName, subName, conf);
    runGC();
    assertNotNull(pulsar.getBrokerService().getTopicReference(topicName));
    // 3. Topic with subscription is not GCed even with no connections
    consumer.close();
    runGC();
    assertNotNull(pulsar.getBrokerService().getTopicReference(topicName));
    // 4. Topic can be GCed after unsubscribe
    admin.persistentTopics().deleteSubscription(topicName, subName);
    runGC();
    assertNull(pulsar.getBrokerService().getTopicReference(topicName));
}

Example 12 with Consumer

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

the class PersistentTopicE2ETest method testSimpleConsumerEvents.

@Test
public void testSimpleConsumerEvents() throws Exception {
    final String topicName = "persistent://prop/use/ns-abc/topic1";
    final String subName = "sub1";
    final int numMsgs = 10;
    ConsumerConfiguration conf = new ConsumerConfiguration();
    conf.setSubscriptionType(SubscriptionType.Exclusive);
    // 1. client connect
    Consumer consumer = pulsarClient.subscribe(topicName, subName, conf);
    PersistentTopic topicRef = (PersistentTopic) pulsar.getBrokerService().getTopicReference(topicName);
    PersistentSubscription subRef = topicRef.getPersistentSubscription(subName);
    assertNotNull(topicRef);
    assertNotNull(subRef);
    assertTrue(subRef.getDispatcher().isConsumerConnected());
    Thread.sleep(ASYNC_EVENT_COMPLETION_WAIT);
    assertEquals(getAvailablePermits(subRef), 1000);
    Producer producer = pulsarClient.createProducer(topicName);
    for (int i = 0; i < numMsgs * 2; i++) {
        String message = "my-message-" + i;
        producer.send(message.getBytes());
    }
    assertTrue(subRef.getDispatcher().isConsumerConnected());
    rolloverPerIntervalStats();
    assertEquals(subRef.getNumberOfEntriesInBacklog(), numMsgs * 2);
    // 2. messages pushed before client receive
    Thread.sleep(ASYNC_EVENT_COMPLETION_WAIT);
    assertEquals(getAvailablePermits(subRef), 1000 - numMsgs * 2);
    Message msg = null;
    for (int i = 0; i < numMsgs; i++) {
        msg = consumer.receive();
        // 3. in-order message delivery
        assertEquals(new String(msg.getData()), "my-message-" + i);
        consumer.acknowledge(msg);
    }
    rolloverPerIntervalStats();
    // 4. messages deleted on individual acks
    Thread.sleep(ASYNC_EVENT_COMPLETION_WAIT);
    assertEquals(subRef.getNumberOfEntriesInBacklog(), numMsgs);
    for (int i = 0; i < numMsgs; i++) {
        msg = consumer.receive();
        if (i == numMsgs - 1) {
            consumer.acknowledgeCumulative(msg);
        }
    }
    rolloverPerIntervalStats();
    // 5. messages deleted on cumulative acks
    Thread.sleep(ASYNC_EVENT_COMPLETION_WAIT);
    assertEquals(subRef.getNumberOfEntriesInBacklog(), 0);
    // 6. consumer unsubscribe
    consumer.unsubscribe();
    // 6. consumer graceful close
    consumer.close();
    // 7. consumer unsubscribe
    try {
        consumer.unsubscribe();
        fail("Should have failed");
    } catch (PulsarClientException.AlreadyClosedException e) {
    // ok
    }
    Thread.sleep(ASYNC_EVENT_COMPLETION_WAIT);
    subRef = topicRef.getPersistentSubscription(subName);
    assertNull(subRef);
    producer.close();
    Thread.sleep(ASYNC_EVENT_COMPLETION_WAIT);
}

Example 13 with Consumer

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

the class NamespaceServiceTest method testUnloadNamespaceBundleFailure.

@Test
public void testUnloadNamespaceBundleFailure() throws Exception {
    final String topicName = "persistent://my-property/use/my-ns/my-topic1";
    ConsumerConfiguration conf = new ConsumerConfiguration();
    Consumer consumer = pulsarClient.subscribe(topicName, "my-subscriber-name", conf);
    ConcurrentOpenHashMap<String, CompletableFuture<Topic>> topics = pulsar.getBrokerService().getTopics();
    Topic spyTopic = spy(topics.get(topicName).get());
    topics.clear();
    CompletableFuture<Topic> topicFuture = CompletableFuture.completedFuture(spyTopic);
    // add mock topic
    topics.put(topicName, topicFuture);
    doAnswer(new Answer<CompletableFuture<Void>>() {

        @Override
        public CompletableFuture<Void> answer(InvocationOnMock invocation) throws Throwable {
            CompletableFuture<Void> result = new CompletableFuture<>();
            result.completeExceptionally(new RuntimeException("first time failed"));
            return result;
        }
    }).when(spyTopic).close();
    NamespaceBundle bundle = pulsar.getNamespaceService().getBundle(DestinationName.get(topicName));
    try {
        pulsar.getNamespaceService().unloadNamespaceBundle(bundle);
    } catch (Exception e) {
        // fail
        fail(e.getMessage());
    }
    try {
        pulsar.getLocalZkCache().getZooKeeper().getData(ServiceUnitZkUtils.path(bundle), null, null);
        fail("it should fail as node is not present");
    } catch (org.apache.zookeeper.KeeperException.NoNodeException e) {
    // ok
    }
}

Example 14 with Consumer

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

the class BacklogQuotaManagerTest method testConcurrentAckAndEviction.

@Test
public void testConcurrentAckAndEviction() throws Exception {
    assertEquals(admin.namespaces().getBacklogQuotaMap("prop/usc/ns-quota"), Maps.newTreeMap());
    admin.namespaces().setBacklogQuota("prop/usc/ns-quota", new BacklogQuota(10 * 1024, BacklogQuota.RetentionPolicy.consumer_backlog_eviction));
    final String topic1 = "persistent://prop/usc/ns-quota/topic12";
    final String subName1 = "c12";
    final String subName2 = "c22";
    final int numMsgs = 20;
    final CyclicBarrier barrier = new CyclicBarrier(2);
    final CountDownLatch counter = new CountDownLatch(2);
    final AtomicBoolean gotException = new AtomicBoolean(false);
    ClientConfiguration clientConf = new ClientConfiguration();
    clientConf.setStatsInterval(0, TimeUnit.SECONDS);
    PulsarClient client = PulsarClient.create(adminUrl.toString(), clientConf);
    PulsarClient client2 = PulsarClient.create(adminUrl.toString(), clientConf);
    Consumer consumer1 = client2.subscribe(topic1, subName1);
    Consumer consumer2 = client2.subscribe(topic1, subName2);
    Thread producerThread = new Thread() {

        public void run() {
            try {
                barrier.await();
                final com.yahoo.pulsar.client.api.Producer producer = client.createProducer(topic1);
                byte[] content = new byte[1024];
                for (int i = 0; i < numMsgs; i++) {
                    producer.send(content);
                }
                producer.close();
            } catch (Exception e) {
                gotException.set(true);
            } finally {
                counter.countDown();
            }
        }
    };
    Thread ConsumerThread = new Thread() {

        public void run() {
            try {
                barrier.await();
                for (int i = 0; i < numMsgs; i++) {
                    // only one consumer acknowledges the message
                    consumer1.acknowledge(consumer1.receive());
                    consumer2.receive();
                }
            } catch (Exception e) {
                gotException.set(true);
            } finally {
                counter.countDown();
            }
        }
    };
    producerThread.start();
    ConsumerThread.start();
    // test hangs without timeout since there is nothing to consume due to eviction
    counter.await(20, TimeUnit.SECONDS);
    assertTrue(!gotException.get());
    Thread.sleep((TIME_TO_CHECK_BACKLOG_QUOTA + 1) * 1000);
    rolloverStats();
    PersistentTopicStats stats = admin.persistentTopics().getStats(topic1);
    Assert.assertTrue(stats.storageSize <= 10 * 1024, "Storage size is [" + stats.storageSize + "]");
    client.close();
    client2.close();
}

Example 15 with Consumer

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

the class BacklogQuotaManagerTest method testEvictionMulti.

@Test
public void testEvictionMulti() throws Exception {
    assertEquals(admin.namespaces().getBacklogQuotaMap("prop/usc/ns-quota"), Maps.newTreeMap());
    admin.namespaces().setBacklogQuota("prop/usc/ns-quota", new BacklogQuota(15 * 1024, BacklogQuota.RetentionPolicy.consumer_backlog_eviction));
    final String topic1 = "persistent://prop/usc/ns-quota/topic14";
    final String subName1 = "c14";
    final String subName2 = "c24";
    final int numMsgs = 10;
    final CyclicBarrier barrier = new CyclicBarrier(4);
    final CountDownLatch counter = new CountDownLatch(4);
    final AtomicBoolean gotException = new AtomicBoolean(false);
    final ClientConfiguration clientConf = new ClientConfiguration();
    clientConf.setStatsInterval(0, TimeUnit.SECONDS);
    final PulsarClient client = PulsarClient.create(adminUrl.toString(), clientConf);
    final Consumer consumer1 = client.subscribe(topic1, subName1);
    final Consumer consumer2 = client.subscribe(topic1, subName2);
    final PulsarClient client3 = PulsarClient.create(adminUrl.toString(), clientConf);
    final PulsarClient client2 = PulsarClient.create(adminUrl.toString(), clientConf);
    Thread producerThread1 = new Thread() {

        public void run() {
            try {
                barrier.await();
                com.yahoo.pulsar.client.api.Producer producer = client2.createProducer(topic1);
                byte[] content = new byte[1024];
                for (int i = 0; i < numMsgs; i++) {
                    producer.send(content);
                }
                producer.close();
            } catch (Exception e) {
                gotException.set(true);
            } finally {
                counter.countDown();
            }
        }
    };
    Thread producerThread2 = new Thread() {

        public void run() {
            try {
                barrier.await();
                com.yahoo.pulsar.client.api.Producer producer = client3.createProducer(topic1);
                byte[] content = new byte[1024];
                for (int i = 0; i < numMsgs; i++) {
                    producer.send(content);
                }
                producer.close();
            } catch (Exception e) {
                gotException.set(true);
            } finally {
                counter.countDown();
            }
        }
    };
    Thread ConsumerThread1 = new Thread() {

        public void run() {
            try {
                barrier.await();
                for (int i = 0; i < numMsgs * 2; i++) {
                    consumer1.acknowledge(consumer1.receive());
                }
            } catch (Exception e) {
                gotException.set(true);
            } finally {
                counter.countDown();
            }
        }
    };
    Thread ConsumerThread2 = new Thread() {

        public void run() {
            try {
                barrier.await();
                for (int i = 0; i < numMsgs * 2; i++) {
                    consumer2.acknowledge(consumer2.receive());
                }
            } catch (Exception e) {
                gotException.set(true);
            } finally {
                counter.countDown();
            }
        }
    };
    producerThread1.start();
    producerThread2.start();
    ConsumerThread1.start();
    ConsumerThread2.start();
    counter.await(20, TimeUnit.SECONDS);
    assertTrue(!gotException.get());
    Thread.sleep((TIME_TO_CHECK_BACKLOG_QUOTA + 1) * 1000);
    rolloverStats();
    PersistentTopicStats stats = admin.persistentTopics().getStats(topic1);
    Assert.assertTrue(stats.storageSize <= 15 * 1024, "Storage size is [" + stats.storageSize + "]");
    client.close();
    client2.close();
    client3.close();
}