Blockhound: Allow blocking call in kubernetes-client WatchEventsListener

kubernetes/src/main/java/com/linecorp/armeria/client/kubernetes/KubernetesBlockHoundIntegration.java

@@ -32,12 +32,5 @@ public void applyTo(Builder builder) {
         // a fully readable ByteBuffer.
         builder.allowBlockingCallsInside(
                 "io.fabric8.kubernetes.client.http.HttpClientReadableByteChannel", "doLockedAndSignal");
-        // StandardHttpRequest creates UUIDs using java.util.UUID.randomUUID() that uses SecureRandom.
-        // The method is temporarily allowed until the problem is resolved in the upstream.
-        // See: https://github.com/fabric8io/kubernetes-client/issues/5735
-        // TODO(ikhoon): Remove this once the issue is fixed.
-        builder.allowBlockingCallsInside(
-                "io.fabric8.kubernetes.client.http.StandardHttpRequest$Builder",
-                "build");
     }
 }

kubernetes/src/test/java/com/linecorp/armeria/client/kubernetes/KubernetesTestBlockHoundIntegration.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2025 LY Corporation
+ *
+ * LY Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package com.linecorp.armeria.client.kubernetes;
+
+import reactor.blockhound.BlockHound.Builder;
+import reactor.blockhound.integration.BlockHoundIntegration;
+
+/**
+ * A {@link BlockHoundIntegration} for the Fabric Kubernetes module in tests.
+ */
+public final class KubernetesTestBlockHoundIntegration implements BlockHoundIntegration {
+    @Override
+    public void applyTo(Builder builder) {
+        builder.allowBlockingCallsInside(
+                "io.fabric8.kubernetes.client.server.mock.WatchEventsListener", "onClosed");
+        builder.allowBlockingCallsInside(
+                "io.fabric8.kubernetes.client.server.mock.WatchEventsListener", "onFailure");
+    }
+}

kubernetes/src/test/resources/META-INF/services/reactor.blockhound.integration.BlockHoundIntegration

@@ -0,0 +1 @@
+com.linecorp.armeria.client.kubernetes.KubernetesTestBlockHoundIntegration