Cleanup in it utilities 6 (#1770)

Author: wind57

spring-cloud-kubernetes-integration-tests/spring-cloud-kubernetes-k8s-client-reload/src/test/java/org/springframework/cloud/kubernetes/k8s/client/reload/configmap/K8sClientConfigMapReloadIT.java

@@ -85,7 +85,7 @@ static void beforeAll() throws Exception {
 	}
 
 	@AfterAll
-	static void afterAll() throws Exception {
+	static void afterAll() {
 		util.deleteClusterWide(NAMESPACE, Set.of("left", "right"));
 		manifests(Phase.DELETE);
 		util.deleteNamespace("left");

spring-cloud-kubernetes-test-support/src/main/java/org/springframework/cloud/kubernetes/integration/tests/commons/Commons.java

@@ -17,7 +17,6 @@
 package org.springframework.cloud.kubernetes.integration.tests.commons;
 
 import java.io.File;
-import java.io.IOException;
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
@@ -41,7 +40,6 @@
 import org.testcontainers.k3s.K3sContainer;
 
 import org.springframework.core.io.ClassPathResource;
-import org.springframework.util.ReflectionUtils;
 import org.springframework.util.StreamUtils;
 import org.springframework.util.StringUtils;
 
@@ -59,6 +57,8 @@
  */
 public final class Commons {
 
+	private static String POM_VERSION;
+
 	private static final Log LOG = LogFactory.getLog(Commons.class);
 
 	private Commons() {
@@ -149,6 +149,11 @@ public static void loadImage(String image, String tag, String tarName, K3sContai
 	 * either get the tar from '/tmp/docker/images', or pull the image.
 	 */
 	public static void load(K3sContainer container, String tarName, String imageNameForDownload, String imageVersion) {
+
+		if (imageAlreadyInK3s(container, tarName)) {
+			return;
+		}
+
 		File dockerImagesRootDir = Paths.get(TMP_IMAGES).toFile();
 		if (dockerImagesRootDir.exists() && dockerImagesRootDir.isDirectory()) {
 			File[] tars = dockerImagesRootDir.listFiles();
@@ -204,22 +209,22 @@ public static void pullImage(String image, String tag, K3sContainer container) t
 		try (PullImageCmd pullImageCmd = container.getDockerClient().pullImageCmd(image)) {
 			pullImageCmd.withTag(tag).start().awaitCompletion();
 		}
-
 	}
 
 	public static String pomVersion() {
-		try (InputStream in = new ClassPathResource(KUBERNETES_VERSION_FILE).getInputStream()) {
-			String version = StreamUtils.copyToString(in, StandardCharsets.UTF_8);
-			if (StringUtils.hasText(version)) {
-				version = version.trim();
+		if (POM_VERSION == null) {
+			try (InputStream in = new ClassPathResource(KUBERNETES_VERSION_FILE).getInputStream()) {
+				String version = StreamUtils.copyToString(in, StandardCharsets.UTF_8);
+				if (StringUtils.hasText(version)) {
+					POM_VERSION = version.trim();
+				}
+			}
+			catch (Exception e) {
+				throw new RuntimeException(e);
 			}
-			return version;
-		}
-		catch (IOException e) {
-			ReflectionUtils.rethrowRuntimeException(e);
 		}
-		// not reachable since exception rethrown at runtime
-		return null;
+
+		return POM_VERSION;
 	}
 
 	/**
@@ -259,4 +264,23 @@ private static void loadImageFromPath(String tarName, K3sContainer container) {
 		});
 	}
 
+	private static boolean imageAlreadyInK3s(K3sContainer container, String tarName) {
+		try {
+			boolean present = container.execInContainer("sh", "-c", "ctr images list | grep " + tarName)
+				.getStdout()
+				.contains(tarName);
+			if (present) {
+				System.out.println("image : " + tarName + " already in k3s, skipping");
+				return true;
+			}
+			else {
+				System.out.println("image : " + tarName + " not in k3s");
+				return false;
+			}
+		}
+		catch (Exception e) {
+			throw new RuntimeException(e);
+		}
+	}
+
 }

spring-cloud-kubernetes-test-support/src/main/java/org/springframework/cloud/kubernetes/integration/tests/commons/Images.java

@@ -79,9 +79,7 @@ public static String wiremockVersion() {
 	}
 
 	public static void loadBusybox(K3sContainer container) {
-		if (!imageAlreadyInK3s(container, BUSYBOX_TAR)) {
-			Commons.load(container, BUSYBOX_TAR, BUSYBOX, busyboxVersion());
-		}
+		Commons.load(container, BUSYBOX_TAR, BUSYBOX, busyboxVersion());
 	}
 
 	public static void loadWiremock(K3sContainer container) {
@@ -108,25 +106,6 @@ public static void loadRabbitmq(K3sContainer container) {
 		Commons.load(container, RABBITMQ_TAR, RABBITMQ, rabbitMqVersion());
 	}
 
-	private static boolean imageAlreadyInK3s(K3sContainer container, String tarName) {
-		try {
-			boolean present = container.execInContainer("sh", "-c", "ctr images list | grep " + tarName)
-				.getStdout()
-				.contains(tarName);
-			if (present) {
-				System.out.println("image : " + tarName + " already in k3s, skipping");
-				return true;
-			}
-			else {
-				System.out.println("image : " + tarName + " not in k3s");
-				return false;
-			}
-		}
-		catch (Exception e) {
-			throw new RuntimeException(e);
-		}
-	}
-
 	// find the image version from current-images.txt
 	private static String imageVersion(String imageNameForDownload) {
 		BufferedReader reader = new BufferedReader(