Revert "Merge branch '2.4.x'"

This reverts commit 5488b8cb46, reversing
changes made to dee0df5c53.

See gh-25701

spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/ImagePackager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -28,7 +28,6 @@ import org.springframework.util.Assert;
  * Utility class that can be used to export a fully packaged archive to an OCI image.
  *
  * @author Phillip Webb
- * @author Scott Frederick
  * @since 2.3.0
  */
 public class ImagePackager extends Packager {
@@ -38,18 +37,11 @@ public class ImagePackager extends Packager {
 	 * @param source the source file to package
 	 */
 	public ImagePackager(File source) {
-		Assert.notNull(source, "Source file must not be null");
-		this.source = source.getAbsoluteFile();
-		if (isAlreadyPackaged()) {
-			this.source = getBackupFile();
-		}
-		Assert.isTrue(this.source.exists() && this.source.isFile(),
-				"Source '" + this.source + "' must refer to an existing file");
-		Assert.state(!isAlreadyPackaged(), () -> "Repackaged archive file " + getSource() + " cannot be exported");
+		super(source, null);
 	}
 
 	/**
-	 * Create a packaged image.
+	 * Create an packaged image.
 	 * @param libraries the contained libraries
 	 * @param exporter the exporter used to write the image
 	 * @throws IOException on IO error
@@ -59,7 +51,10 @@ public class ImagePackager extends Packager {
 	}
 
 	private void packageImage(Libraries libraries, AbstractJarWriter writer) throws IOException {
-		try (JarFile sourceJar = new JarFile(getSource())) {
+		File source = isAlreadyPackaged() ? getBackupFile() : getSource();
+		Assert.state(source.exists() && source.isFile(), () -> "Unable to read jar file " + source);
+		Assert.state(!isAlreadyPackaged(source), () -> "Repackaged jar file " + source + " cannot be exported");
+		try (JarFile sourceJar = new JarFile(source)) {
 			write(sourceJar, libraries, writer);
 		}
 	}

spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/Packager.java

@@ -45,7 +45,6 @@ import org.springframework.util.StringUtils;
  * @author Andy Wilkinson
  * @author Stephane Nicoll
  * @author Madhura Bhave
- * @author Scott Frederick
  * @since 2.3.0
  */
 public abstract class Packager {
@@ -70,15 +69,15 @@ public abstract class Packager {
 
 	private static final String SPRING_BOOT_APPLICATION_CLASS_NAME = "org.springframework.boot.autoconfigure.SpringBootApplication";
 
-	private final List<MainClassTimeoutWarningListener> mainClassTimeoutListeners = new ArrayList<>();
+	private List<MainClassTimeoutWarningListener> mainClassTimeoutListeners = new ArrayList<>();
 
 	private String mainClass;
 
-	protected File source;
+	private final File source;
 
 	private Layout layout;
 
-	protected LayoutFactory layoutFactory;
+	private LayoutFactory layoutFactory;
 
 	private Layers layers;
 
@@ -86,6 +85,19 @@ public abstract class Packager {
 
 	private boolean includeRelevantJarModeJars = true;
 
+	/**
+	 * Create a new {@link Packager} instance.
+	 * @param source the source JAR file to package
+	 * @param layoutFactory the layout factory to use or {@code null}
+	 */
+	protected Packager(File source, LayoutFactory layoutFactory) {
+		Assert.notNull(source, "Source file must not be null");
+		Assert.isTrue(source.exists() && source.isFile(),
+				() -> "Source must refer to an existing file, got " + source.getAbsolutePath());
+		this.source = source.getAbsoluteFile();
+		this.layoutFactory = layoutFactory;
+	}
+
 	/**
 	 * Add a listener that will be triggered to display a warning if searching for the
 	 * main class takes too long.
@@ -141,18 +153,15 @@ public abstract class Packager {
 		this.includeRelevantJarModeJars = includeRelevantJarModeJars;
 	}
 
-	protected final boolean isAlreadyPackaged() {
+	protected final boolean isAlreadyPackaged() throws IOException {
 		return isAlreadyPackaged(this.source);
 	}
 
-	protected final boolean isAlreadyPackaged(File file) {
+	protected final boolean isAlreadyPackaged(File file) throws IOException {
 		try (JarFile jarFile = new JarFile(file)) {
 			Manifest manifest = jarFile.getManifest();
 			return (manifest != null && manifest.getMainAttributes().getValue(BOOT_VERSION_ATTRIBUTE) != null);
 		}
-		catch (IOException ex) {
-			throw new IllegalStateException("Error reading archive file", ex);
-		}
 	}
 
 	protected final void write(JarFile sourceJar, Libraries libraries, AbstractJarWriter writer) throws IOException {
@@ -278,7 +287,8 @@ public abstract class Packager {
 	 * @return the file to use to backup the original source
 	 */
 	public final File getBackupFile() {
-		return new File(this.source.getParentFile(), this.source.getName() + ".original");
+		File source = getSource();
+		return new File(source.getParentFile(), source.getName() + ".original");
 	}
 
 	protected final File getSource() {

spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/Repackager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -31,7 +31,6 @@ import org.springframework.util.Assert;
  * @author Andy Wilkinson
  * @author Stephane Nicoll
  * @author Madhura Bhave
- * @author Scott Frederick
  * @since 1.0.0
  */
 public class Repackager extends Packager {
@@ -42,16 +41,8 @@ public class Repackager extends Packager {
 		this(source, null);
 	}
 
-	/**
-	 * Create a new {@link Repackager} instance.
-	 * @param source the source archive file to package
-	 * @param layoutFactory the layout factory to use or {@code null}
-	 */
 	public Repackager(File source, LayoutFactory layoutFactory) {
-		Assert.notNull(source, "Source file must not be null");
-		Assert.isTrue(source.exists() && source.isFile(), "Source '" + source + "' must refer to an existing file");
-		this.source = source.getAbsoluteFile();
-		this.layoutFactory = layoutFactory;
+		super(source, layoutFactory);
 	}
 
 	/**