Remove support for embedded launch scripts

Closes gh-47666

Author: wilkinsona

build-plugin/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/examples/packaging/boot-jar-custom-launch-script.gradle

@@ -246,75 +246,6 @@ The closure is passed a `FileTreeElement` and should return a `boolean` indicati
 
 
 
-[[packaging-executable.configuring.launch-script]]
-=== Making an Archive Fully Executable
-
-Spring Boot provides support for fully executable archives.
-An archive is made fully executable by prepending a shell script that knows how to launch the application.
-On Unix-like platforms, this launch script allows the archive to be run directly like any other executable or to be installed as a service.
-
-NOTE: Currently, some tools do not accept this format so you may not always be able to use this technique.
-For example, `jar -xf` may silently fail to extract a jar or war that has been made fully-executable.
-It is recommended that you only enable this option if you intend to execute it directly, rather than running it with `java -jar` or deploying it to a servlet container.
-
-To use this feature, the inclusion of the launch script must be enabled:
-
-[tabs]
-======
-Groovy::
-+
-[source,groovy,indent=0,subs="verbatim,attributes"]
-----
-include::example$packaging/boot-jar-include-launch-script.gradle[tags=include-launch-script]
-----
-Kotlin::
-+
-[source,kotlin,indent=0,subs="verbatim,attributes"]
-----
-include::example$packaging/boot-jar-include-launch-script.gradle.kts[tags=include-launch-script]
-----
-======
-
-This will add Spring Boot's default launch script to the archive.
-The default launch script includes several properties with sensible default values.
-The values can be customized using the `properties` property:
-
-[tabs]
-======
-Groovy::
-+
-[source,groovy,indent=0,subs="verbatim,attributes"]
-----
-include::example$packaging/boot-jar-launch-script-properties.gradle[tags=launch-script-properties]
-----
-Kotlin::
-+
-[source,kotlin,indent=0,subs="verbatim,attributes"]
-----
-include::example$packaging/boot-jar-launch-script-properties.gradle.kts[tags=launch-script-properties]
-----
-======
-
-If the default launch script does not meet your needs, the `script` property can be used to provide a custom launch script:
-
-[tabs]
-======
-Groovy::
-+
-[source,groovy,indent=0,subs="verbatim,attributes"]
-----
-include::example$packaging/boot-jar-custom-launch-script.gradle[tags=custom-launch-script]
-----
-Kotlin::
-+
-[source,kotlin,indent=0,subs="verbatim,attributes"]
-----
-include::example$packaging/boot-jar-custom-launch-script.gradle.kts[tags=custom-launch-script]
-----
-======
-
-
-
 [[packaging-executable.configuring.properties-launcher]]
 === Using the PropertiesLauncher
 

build-plugin/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/examples/packaging/boot-jar-custom-launch-script.gradle.kts

@@ -18,7 +18,6 @@
 
 import java.util.Set;
 
-import org.gradle.api.Action;
 import org.gradle.api.JavaVersion;
 import org.gradle.api.Project;
 import org.gradle.api.Task;
@@ -30,7 +29,6 @@
 import org.gradle.api.specs.Spec;
 import org.gradle.api.tasks.Classpath;
 import org.gradle.api.tasks.Input;
-import org.gradle.api.tasks.Nested;
 import org.gradle.api.tasks.Optional;
 import org.jspecify.annotations.Nullable;
 
@@ -65,28 +63,6 @@ public interface BootArchive extends Task {
 	 */
 	void requiresUnpack(Spec<FileTreeElement> spec);
 
-	/**
-	 * Returns the {@link LaunchScriptConfiguration} that will control the script that is
-	 * prepended to the archive.
-	 * @return the launch script configuration, or {@code null} if the launch script has
-	 * not been configured.
-	 */
-	@Nested
-	@Optional
-	@Nullable LaunchScriptConfiguration getLaunchScript();
-
-	/**
-	 * Configures the archive to have a prepended launch script.
-	 */
-	void launchScript();
-
-	/**
-	 * Configures the archive to have a prepended launch script, customizing its
-	 * configuration using the given {@code action}.
-	 * @param action the action to apply
-	 */
-	void launchScript(Action<LaunchScriptConfiguration> action);
-
 	/**
 	 * Returns the classpath that will be included in the archive.
 	 * @return the classpath

build-plugin/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/examples/packaging/boot-jar-include-launch-script.gradle

@@ -75,8 +75,6 @@ class BootArchiveSupport {
 
 	private final Function<FileCopyDetails, ZipCompression> compressionResolver;
 
-	private @Nullable LaunchScriptConfiguration launchScript;
-
 	BootArchiveSupport(String loaderMainClass, Spec<FileCopyDetails> librarySpec,
 			Function<FileCopyDetails, ZipCompression> compressionResolver) {
 		this.loaderMainClass = loaderMainClass;
@@ -129,13 +127,12 @@ CopyAction createCopyAction(Jar jar, ResolvedDependencies resolvedDependencies,
 		boolean includeDefaultLoader = isUsingDefaultLoader(jar);
 		Spec<FileTreeElement> requiresUnpack = this.requiresUnpack.getAsSpec();
 		Spec<FileTreeElement> exclusions = this.exclusions.getAsExcludeSpec();
-		LaunchScriptConfiguration launchScript = this.launchScript;
 		Spec<FileCopyDetails> librarySpec = this.librarySpec;
 		Function<FileCopyDetails, ZipCompression> compressionResolver = this.compressionResolver;
 		String encoding = jar.getMetadataCharset();
 		CopyAction action = new BootZipCopyAction(output, manifest, preserveFileTimestamps, dirPermissions,
-				filePermissions, includeDefaultLoader, jarmodeToolsLocation, requiresUnpack, exclusions, launchScript,
-				librarySpec, compressionResolver, encoding, resolvedDependencies, supportsSignatureFile, layerResolver);
+				filePermissions, includeDefaultLoader, jarmodeToolsLocation, requiresUnpack, exclusions, librarySpec,
+				compressionResolver, encoding, resolvedDependencies, supportsSignatureFile, layerResolver);
 		return action;
 	}
 
@@ -175,14 +172,6 @@ private boolean isUsingDefaultLoader(Jar jar) {
 		return DEFAULT_LAUNCHER_CLASSES.contains(jar.getManifest().getAttributes().get("Main-Class"));
 	}
 
-	@Nullable LaunchScriptConfiguration getLaunchScript() {
-		return this.launchScript;
-	}
-
-	void setLaunchScript(LaunchScriptConfiguration launchScript) {
-		this.launchScript = launchScript;
-	}
-
 	void requiresUnpack(String... patterns) {
 		this.requiresUnpack.include(patterns);
 	}

build-plugin/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/examples/packaging/boot-jar-include-launch-script.gradle.kts

@@ -166,21 +166,6 @@ public void requiresUnpack(Spec<FileTreeElement> spec) {
 		this.support.requiresUnpack(spec);
 	}
 
-	@Override
-	public @Nullable LaunchScriptConfiguration getLaunchScript() {
-		return this.support.getLaunchScript();
-	}
-
-	@Override
-	public void launchScript() {
-		enableLaunchScriptIfNecessary();
-	}
-
-	@Override
-	public void launchScript(Action<LaunchScriptConfiguration> action) {
-		action.execute(enableLaunchScriptIfNecessary());
-	}
-
 	/**
 	 * Returns the spec that describes the layers in a layered jar.
 	 * @return the spec for the layers
@@ -273,15 +258,6 @@ protected boolean isLibrary(FileCopyDetails details) {
 		return path.startsWith(LIB_DIRECTORY);
 	}
 
-	private LaunchScriptConfiguration enableLaunchScriptIfNecessary() {
-		LaunchScriptConfiguration launchScript = this.support.getLaunchScript();
-		if (launchScript == null) {
-			launchScript = new LaunchScriptConfiguration(this);
-			this.support.setLaunchScript(launchScript);
-		}
-		return launchScript;
-	}
-
 	/**
 	 * Syntactic sugar that makes {@link CopySpec#into} calls a little easier to read.
 	 * @param <T> the result type