[GitHub] [pulsar] gaoran10 commented on a diff in pull request #15318: [improve][broker] Make some methods of `ClusterBase` pure async.

[GitBox <gi...@apache.org>]

gaoran10 commented on code in PR #15318:
URL: https://github.com/apache/pulsar/pull/15318#discussion_r864431950


##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/impl/ClustersBase.java:
##########
@@ -158,27 +152,31 @@ public void createCluster(
                         + "}"
                 )
             )
-        )
-                ClusterDataImpl clusterData
-    ) {
-        validateSuperUserAccess();
-        validatePoliciesReadOnlyAccess();
-
-        try {
-            NamedEntity.checkName(cluster);
-            if (clusterResources().getCluster(cluster).isPresent()) {
-                log.warn("[{}] Failed to create already existing cluster {}", clientAppId(), cluster);
-                throw new RestException(Status.CONFLICT, "Cluster already exists");
-            }
-            clusterResources().createCluster(cluster, clusterData);
-            log.info("[{}] Created cluster {}", clientAppId(), cluster);
-        } catch (IllegalArgumentException e) {
-            log.warn("[{}] Failed to create cluster with invalid name {}", clientAppId(), cluster, e);
-            throw new RestException(Status.PRECONDITION_FAILED, "Cluster name is not valid");
-        } catch (Exception e) {
-            log.error("[{}] Failed to create cluster {}", clientAppId(), cluster, e);
-            throw new RestException(e);
-        }
+        ) ClusterDataImpl clusterData) {
+        validateSuperUserAccessAsync()
+                .thenCompose(__ -> validatePoliciesReadOnlyAccessAsync())
+                .thenCompose(__ -> {
+                    NamedEntity.checkName(cluster);
+                    return clusterResources().getClusterAsync(cluster);
+                }).thenCompose(clusterOpt -> {
+                    if (clusterOpt.isPresent()) {
+                        throw new RestException(Status.CONFLICT, "Cluster already exists");

Review Comment:
   Ok



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