Technoboy- commented on code in PR #15518:
URL: https://github.com/apache/pulsar/pull/15518#discussion_r869372040
##########
pulsar-broker-common/src/main/java/org/apache/pulsar/broker/resources/TenantResources.java:
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@@ -110,6 +110,40 @@ public List<String> getListOfNamespaces(String tenant)
throws MetadataStoreExcep
return namespaces;
}
+ public CompletableFuture<List<String>> getListOfNamespacesAsync(String
tenant) {
+ List<String> namespaces = new ArrayList<>();
+ // this will return a cluster in v1 and a namespace in v2
+ CompletableFuture<List<CompletableFuture<Void>>> result =
getChildrenAsync(joinPath(BASE_POLICIES_PATH, tenant))
+ .thenApply(clusterOrNamespaces ->
clusterOrNamespaces.stream().map(key ->
+ getChildrenAsync(joinPath(BASE_POLICIES_PATH, tenant,
key))
+ .thenCompose(children -> {
+ CompletableFuture<Void> ret =
CompletableFuture.completedFuture(null);
+ if (children == null ||
children.isEmpty()) {
+ String namespace =
NamespaceName.get(tenant, key).toString();
+ // if the length is 0 then this is
probably a leftover cluster from namespace
+ // created with the v1 admin format
(prop/cluster/ns) and then deleted, so no
+ // need to add it to the list
+ ret = ret.thenCompose(__ ->
getAsync(joinPath(BASE_POLICIES_PATH, namespace))
+ .thenAccept(opt ->
opt.map(k -> namespaces.add(namespace)))
+ .exceptionally(ex -> {
+ Throwable cause =
FutureUtil.unwrapCompletionException(ex);
+ if (cause
instanceof MetadataStoreException
+
.ContentDeserializationException) {
+ return null;
+ }
+ throw
FutureUtil.wrapToCompletionException(ex);
+ }));
+ } else {
+ children.forEach(ns -> {
Review Comment:
Fixed, but seems harder to read ...
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