codelipenghui commented on a change in pull request #13846:
URL: https://github.com/apache/pulsar/pull/13846#discussion_r789316379
##########
File path:
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/impl/PersistentTopicsBase.java
##########
@@ -1044,72 +1045,88 @@ protected void internalDeleteTopic(boolean
authoritative, boolean deleteSchema)
}
protected void internalGetSubscriptions(AsyncResponse asyncResponse,
boolean authoritative) {
+ CompletableFuture<Void> future;
if (topicName.isGlobal()) {
- try {
- validateGlobalNamespaceOwnership(namespaceName);
- } catch (Exception e) {
- log.error("[{}] Failed to get subscriptions for topic {}",
clientAppId(), topicName, e);
- resumeAsyncResponseExceptionally(asyncResponse, e);
- return;
- }
- }
-
- validateTopicOwnership(topicName, authoritative);
-
- // If the topic name is a partition name, no need to get partition
topic metadata again
- if (topicName.isPartitioned()) {
- internalGetSubscriptionsForNonPartitionedTopic(asyncResponse,
authoritative);
+ future = validateGlobalNamespaceOwnershipAsync(namespaceName);
} else {
- getPartitionedTopicMetadataAsync(topicName, authoritative,
- false).thenAccept(partitionMetadata -> {
- if (partitionMetadata.partitions > 0) {
- try {
- final Set<String> subscriptions =
Sets.newConcurrentHashSet();
- final List<CompletableFuture<Object>>
subscriptionFutures = Lists.newArrayList();
- if (topicName.getDomain() == TopicDomain.persistent) {
- final Map<Integer, CompletableFuture<Boolean>>
existsFutures = Maps.newConcurrentMap();
- for (int i = 0; i < partitionMetadata.partitions;
i++) {
- existsFutures.put(i,
topicResources().persistentTopicExists(topicName.getPartition(i)));
- }
-
FutureUtil.waitForAll(Lists.newArrayList(existsFutures.values())).thenApply(__
->
- existsFutures.entrySet().stream().filter(e
-> e.getValue().join())
- .map(item ->
topicName.getPartition(item.getKey()).toString())
- .collect(Collectors.toList())
- ).thenAccept(topics -> {
- if (log.isDebugEnabled()) {
- log.debug("activeTopics : {}", topics);
- }
- topics.forEach(topic -> {
- try {
- CompletableFuture<List<String>>
subscriptionsAsync = pulsar().getAdminClient()
-
.topics().getSubscriptionsAsync(topic);
-
subscriptionFutures.add(subscriptionsAsync.thenApply(subscriptions::addAll));
- } catch (PulsarServerException e) {
- throw new RestException(e);
+ future = CompletableFuture.completedFuture(null);
+ }
+ future.thenAccept(__ -> validateTopicOwnershipAsync(topicName,
authoritative))
+ .thenAccept(unused -> {
+ // If the topic name is a partition name, no need to get
partition topic metadata again
+ if (topicName.isPartitioned()) {
+
internalGetSubscriptionsForNonPartitionedTopic(asyncResponse, authoritative);
+ } else {
+ getPartitionedTopicMetadataAsync(topicName,
authoritative, false)
+ .thenAccept(partitionMetadata -> {
+ if (partitionMetadata.partitions > 0) {
+ try {
+ final Set<String> subscriptions =
+ Collections.newSetFromMap(
+ new
ConcurrentHashMap<>(partitionMetadata.partitions));
+ final List<CompletableFuture<Object>>
subscriptionFutures = Lists.newArrayList();
+ if (topicName.getDomain() ==
TopicDomain.persistent) {
+ final Map<Integer,
CompletableFuture<Boolean>> existsFutures =
+ new
ConcurrentHashMap<>(partitionMetadata.partitions);
+ for (int i = 0; i <
partitionMetadata.partitions; i++) {
+ existsFutures.put(i,
+
topicResources().persistentTopicExists(topicName.getPartition(i)));
+ }
+
FutureUtil.waitForAll(Lists.newArrayList(existsFutures.values()))
+ .thenApply(__ ->
+
existsFutures.entrySet().stream().filter(e -> e.getValue().join())
+ .map(item ->
topicName.getPartition(item.getKey()).toString())
+
.collect(Collectors.toList())
+ ).thenAccept(topics -> {
+ if (log.isDebugEnabled()) {
+ log.debug("activeTopics : {}",
topics);
+ }
+ topics.forEach(topic -> {
+ try {
+
CompletableFuture<List<String>> subscriptionsAsync = pulsar()
+ .getAdminClient()
+
.topics().getSubscriptionsAsync(topic);
+
subscriptionFutures.add(subscriptionsAsync
+
.thenApply(subscriptions::addAll));
+ } catch (PulsarServerException
e) {
+ throw new RestException(e);
+ }
+ });
+ }).thenAccept(__ ->
resumeAsyncResponse(asyncResponse,
+ subscriptions,
subscriptionFutures));
+ } else {
+ for (int i = 0; i <
partitionMetadata.partitions; i++) {
+ CompletableFuture<List<String>>
subscriptionsAsync = pulsar()
+ .getAdminClient().topics()
+
.getSubscriptionsAsync(topicName.getPartition(i).toString());
+
subscriptionFutures.add(subscriptionsAsync
+
.thenApply(subscriptions::addAll));
+ }
+ resumeAsyncResponse(asyncResponse,
subscriptions, subscriptionFutures);
Review comment:
Interesting, we have a `resumeAsyncResponse` method but looks like can
only be used by list subscriptions.
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