refactor k8s discovery server integration tests

spring-cloud-kubernetes-integration-tests/spring-cloud-kubernetes-k8s-client-discovery-server/pom.xml

@@ -11,6 +11,11 @@
 
 	<artifactId>spring-cloud-kubernetes-k8s-client-discovery-server</artifactId>
 
+	<properties>
+		<spring-boot.repackage.skip>true</spring-boot.repackage.skip>
+		<spring-boot.build-image.skip>true</spring-boot.build-image.skip>
+	</properties>
+
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -43,10 +48,6 @@
 				<directory>../src/main/resources</directory>
 				<filtering>true</filtering>
 			</resource>
-			<resource>
-				<directory>src/main/resources</directory>
-				<filtering>true</filtering>
-			</resource>
 		</resources>
 	</build>
 

spring-cloud-kubernetes-integration-tests/spring-cloud-kubernetes-k8s-client-discovery-server/src/main/java/org/springframework/cloud/kubernetes/discoveryclient/it/App.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2013-2025 the original author or authors.
+ *
+ * Licensed 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 org.springframework.cloud.kubernetes.discoveryclient.it;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+/**
+ * @author wind57
+ */
+@SpringBootApplication
+@EnableScheduling
+public class App {
+
+	public static void main(String[] args) {
+		SpringApplication.run(App.class, args);
+	}
+
+}

spring-cloud-kubernetes-integration-tests/spring-cloud-kubernetes-k8s-client-discovery-server/src/main/java/org/springframework/cloud/kubernetes/discoveryclient/it/HeartbeatListener.java

@@ -35,12 +35,12 @@ class HeartbeatListener implements ApplicationListener<HeartbeatEvent> {
 
 	private static final LogAccessor LOG = new LogAccessor(LogFactory.getLog(HeartbeatListener.class));
 
-	AtomicReference<List<EndpointNameAndNamespace>> state = new AtomicReference<>(List.of());
+	public final AtomicReference<List<EndpointNameAndNamespace>> state = new AtomicReference<>(List.of());
 
 	@Override
 	@SuppressWarnings("unchecked")
 	public void onApplicationEvent(HeartbeatEvent event) {
-		LOG.info("received heartbeat event");
+		LOG.info("received heartbeat event in listener");
 		List<EndpointNameAndNamespace> state = (List<EndpointNameAndNamespace>) event.getValue();
 		this.state.set(state);
 		LOG.info("state received : " + state);