codelipenghui commented on code in PR #20767:
URL: https://github.com/apache/pulsar/pull/20767#discussion_r1257962402
##########
pulsar-broker/src/test/java/org/apache/pulsar/broker/service/ReplicatorSubscriptionTest.java:
##########
@@ -154,6 +158,102 @@ public void testReplicatedSubscriptionAcrossTwoRegions()
throws Exception {
"messages don't match.");
}
+ @Test
+ public void testReplicatedSubscribeAndSwitchToStandbyCluster() throws
Exception {
+ final String namespace = BrokerTestUtil.newUniqueName("pulsar/ns_");
+ final String topicName = BrokerTestUtil.newUniqueName("persistent://"
+ namespace + "/tp_");
+ final String subscriptionName = "s1";
+ final boolean isReplicatedSubscription = true;
+ final int messagesCount = 20;
+ final LinkedHashSet<String> sentMessages = new LinkedHashSet<>();
+ final Set<String> receivedMessages = Collections.synchronizedSet(new
LinkedHashSet<>());
+ admin1.namespaces().createNamespace(namespace);
+ admin1.namespaces().setNamespaceReplicationClusters(namespace,
Sets.newHashSet("r1", "r2"));
+ admin1.topics().createNonPartitionedTopic(topicName);
+ admin1.topics().createSubscription(topicName, subscriptionName,
MessageId.earliest, isReplicatedSubscription);
+ final PersistentTopic topic1 =
+ (PersistentTopic)
pulsar1.getBrokerService().getTopic(topicName, false).join().get();
+
+ // Send messages
+ // Wait for the topic created on the cluster2.
+ // Wait for the snapshot created.
+ final PulsarClient client1 =
PulsarClient.builder().serviceUrl(url1.toString()).build();
+ Producer<String> producer1 =
client1.newProducer(Schema.STRING).topic(topicName).enableBatching(false).create();
+ Consumer<String> consumer1 =
client1.newConsumer(Schema.STRING).topic(topicName)
+
.subscriptionName(subscriptionName).replicateSubscriptionState(isReplicatedSubscription).subscribe();
+ for (int i = 0; i < messagesCount / 2; i++) {
+ String msg = i + "";
+ producer1.send(msg);
+ sentMessages.add(msg);
+ }
+ Awaitility.await().untilAsserted(() -> {
+ ConcurrentOpenHashMap<String, ? extends Replicator> replicators =
topic1.getReplicators();
+ assertTrue(replicators != null && replicators.size() == 1,
"Replicator should started");
+ assertTrue(replicators.values().iterator().next().isConnected(),
"Replicator should be connected");
+
assertTrue(topic1.getReplicatedSubscriptionController().get().getLastCompletedSnapshotId().isPresent(),
+ "One snapshot should be finished");
+ });
+ final PersistentTopic topic2 =
+ (PersistentTopic)
pulsar2.getBrokerService().getTopic(topicName, false).join().get();
+ Awaitility.await().untilAsserted(() -> {
+
assertTrue(topic2.getReplicatedSubscriptionController().isPresent(),
+ "Replicated subscription controller should created");
+ });
+ for (int i = messagesCount / 2; i < messagesCount; i++) {
+ String msg = i + "";
+ producer1.send(msg);
+ sentMessages.add(msg);
+ }
+
+ // Consume half messages and wait the subscription created on the
cluster2.
+ for (int i = 0; i < messagesCount / 2; i++){
+ Message<String> message = consumer1.receive(2, TimeUnit.SECONDS);
+ if (message == null) {
+ fail("Should not receive null.");
+ }
+ receivedMessages.add(message.getValue());
+ consumer1.acknowledge(message);
+ }
+ Awaitility.await().untilAsserted(() -> {
+ assertNotNull(topic2.getSubscriptions().get(subscriptionName),
"Subscription should created");
+ });
+
+ // Switch client to cluster2.
+ // Since the cluster1 was not crash, all messages will be replicated
to the cluster2.
+ consumer1.close();
+ final PulsarClient client2 =
PulsarClient.builder().serviceUrl(url2.toString()).build();
+ final Consumer consumer2 =
client2.newConsumer(Schema.AUTO_CONSUME()).topic(topicName)
+
.subscriptionName(subscriptionName).replicateSubscriptionState(isReplicatedSubscription).subscribe();
+
+ // Consume the messages which not acked.
+ Thread consumeTask2 = new Thread(() -> {
+ while (true) {
+ try {
+ PersistentTopic t2 = topic2;
+ Message message = consumer2.receive(2, TimeUnit.SECONDS);
+ if (message != null) {
+ receivedMessages.add(message.getValue().toString());
+ consumer2.acknowledge(message);
+ }
+ } catch (PulsarClientException e) {
+ throw new RuntimeException(e);
+ }
+ }
+ });
+ consumeTask2.start();
Review Comment:
Why does it need to be executed in a separate thread?
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