ISSUE-3820: ACL enablement check fixes:

kafka-ui-api/src/main/java/com/provectus/kafka/ui/service/ReactiveAdminClient.java

@@ -15,6 +15,8 @@
 import com.provectus.kafka.ui.util.KafkaVersion;
 import com.provectus.kafka.ui.util.annotation.KafkaClientInternalsDependant;
 import java.io.Closeable;
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
@@ -129,38 +131,41 @@ private record ConfigRelatedInfo(String version,
                                    Set<SupportedFeature> features,
                                    boolean topicDeletionIsAllowed) {
 
-    private static Mono<ConfigRelatedInfo> extract(AdminClient ac, int controllerId) {
-      return loadBrokersConfig(ac, List.of(controllerId))
-          .map(map -> map.isEmpty() ? List.<ConfigEntry>of() : map.get(controllerId))
-          .flatMap(configs -> {
-            String version = "1.0-UNKNOWN";
-            boolean topicDeletionEnabled = true;
-            for (ConfigEntry entry : configs) {
-              if (entry.name().contains("inter.broker.protocol.version")) {
-                version = entry.value();
-              }
-              if (entry.name().equals("delete.topic.enable")) {
-                topicDeletionEnabled = Boolean.parseBoolean(entry.value());
-              }
-            }
-            var builder = ConfigRelatedInfo.builder()
-                .version(version)
-                .topicDeletionIsAllowed(topicDeletionEnabled);
-            return SupportedFeature.forVersion(ac, version)
-                .map(features -> builder.features(features).build());
-          });
+    static final Duration UPDATE_DURATION = Duration.of(1, ChronoUnit.HOURS);
+
+    private static Mono<ConfigRelatedInfo> extract(AdminClient ac) {
+      return ReactiveAdminClient.describeClusterImpl(ac, Set.of())
+          .flatMap(desc -> {
+            // choosing node from which we will get configs (starting with controller)
+            var targetNodeId = Optional.ofNullable(desc.controller)
+                .map(Node::id)
+                .orElse(desc.getNodes().iterator().next().id());
+            return loadBrokersConfig(ac, List.of(targetNodeId))
+                .map(map -> map.isEmpty() ? List.<ConfigEntry>of() : map.get(targetNodeId))
+                .flatMap(configs -> {
+                  String version = "1.0-UNKNOWN";
+                  boolean topicDeletionEnabled = true;
+                  for (ConfigEntry entry : configs) {
+                    if (entry.name().contains("inter.broker.protocol.version")) {
+                      version = entry.value();
+                    }
+                    if (entry.name().equals("delete.topic.enable")) {
+                      topicDeletionEnabled = Boolean.parseBoolean(entry.value());
+                    }
+                  }
+                  final String finalVersion = version;
+                  final boolean finalTopicDeletionEnabled = topicDeletionEnabled;
+                  return SupportedFeature.forVersion(ac, version)
+                      .map(features -> new ConfigRelatedInfo(finalVersion, features, finalTopicDeletionEnabled));
+                });
+          })
+          .cache(UPDATE_DURATION);
     }
   }
 
   public static Mono<ReactiveAdminClient> create(AdminClient adminClient) {
-    return describeClusterImpl(adminClient, Set.of())
-        // choosing node from which we will get configs (starting with controller)
-        .flatMap(descr -> descr.controller != null
-            ? Mono.just(descr.controller)
-            : Mono.justOrEmpty(descr.nodes.stream().findFirst())
-        )
-        .flatMap(node -> ConfigRelatedInfo.extract(adminClient, node.id()))
-        .map(info -> new ReactiveAdminClient(adminClient, info));
+    Mono<ConfigRelatedInfo> configRelatedInfoMono = ConfigRelatedInfo.extract(adminClient);
+    return configRelatedInfoMono.map(info -> new ReactiveAdminClient(adminClient, configRelatedInfoMono, info));
   }
 
 
@@ -170,7 +175,7 @@ private static Mono<Boolean> isAuthorizedSecurityEnabled(AdminClient ac, @Nullab
         .doOnError(th -> !(th instanceof SecurityDisabledException)
                 && !(th instanceof InvalidRequestException)
                 && !(th instanceof UnsupportedVersionException),
-            th -> log.warn("Error checking if security enabled", th))
+            th -> log.debug("Error checking if security enabled", th))
         .onErrorReturn(false);
   }
 
@@ -202,6 +207,8 @@ public static <T> Mono<T> toMono(KafkaFuture<T> future) {
 
   @Getter(AccessLevel.PACKAGE) // visible for testing
   private final AdminClient client;
+  private final Mono<ConfigRelatedInfo> configRelatedInfoMono;
+
   private volatile ConfigRelatedInfo configRelatedInfo;
 
   public Set<SupportedFeature> getClusterFeatures() {
@@ -228,7 +235,7 @@ public Mono<Void> updateInternalStats(@Nullable Node controller) {
     if (controller == null) {
       return Mono.empty();
     }
-    return ConfigRelatedInfo.extract(client, controller.id())
+    return configRelatedInfoMono
         .doOnNext(info -> this.configRelatedInfo = info)
         .then();
   }