Pomelongan commented on code in PR #17946:
URL: https://github.com/apache/pulsar/pull/17946#discussion_r1013094569
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pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/impl/PersistentTopicsBase.java:
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@@ -4562,6 +4564,60 @@ private CompletableFuture<Void>
createSubscriptions(TopicName topicName, int num
return result;
}
+ /**
+ * It creates subscriptions for new partitions of existing
partitioned-topics.
+ *
+ * @param topicName : topic-name: persistent://prop/cluster/ns/topic
+ * @param numPartitions : number partitions for the topics
+ *
+ */
+ private CompletableFuture<Void> createMissedSubscriptionsAsync(TopicName
topicName, List<String> subscriptions,
+ int
numPartitions) {
+ CompletableFuture<Void> result = new CompletableFuture<>();
+ if (CollectionUtils.isEmpty(subscriptions)) {
+ result.complete(null);
+ return result;
+ }
+ PulsarAdmin admin;
+ try {
+ admin = pulsar().getAdminClient();
+ } catch (PulsarServerException ex) {
+ result.completeExceptionally(ex);
+ return result;
+ }
+
+ List<CompletableFuture<Void>> subscriptionFutures = new
ArrayList<>(subscriptions.size());
+
+ subscriptions.forEach(subscription -> {
+ for (int i = 0; i < numPartitions; i++) {
+ CompletableFuture<Void> future = new CompletableFuture<>();
+
admin.topics().createSubscriptionAsync(topicName.getPartition(i).toString(),
subscription,
+ MessageId.latest).whenComplete((__, ex) -> {
+ if (ex == null) {
+ future.complete(null);
+ } else {
+ if (ex instanceof
PulsarAdminException.ConflictException) {
+ future.complete(null);
+ } else {
+ future.completeExceptionally(ex);
+ }
+ }
+ });
+ subscriptionFutures.add(future);
+ }
Review Comment:
@codelipenghui Okay～I have updated, PTAL.
Calling `internalCreateSubscription` directly requires implementing the
AsyncResponse interface first, which is troublesome. So I try to extract the
common part of the two methods to avoid duplicated code.
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