added initial buggy version of executable jar plugin
This commit is contained in:
47
executable-jar/executable-jar-launcher/build.gradle
Normal file
47
executable-jar/executable-jar-launcher/build.gradle
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@@ -0,0 +1,47 @@
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import java.util.jar.Attributes
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plugins {
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id 'java-library'
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}
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configurations {
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embedded
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compileOnly.extendsFrom(embedded)
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}
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dependencies {
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embedded project(path: ":executable-jar:executable-jar-common", configuration: 'archives')
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}
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java {
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modularity.inferModulePath = true
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}
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jar {
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manifest {
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attributes([
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(Attributes.Name.SPECIFICATION_TITLE) : "executable-jar-launcher",
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(Attributes.Name.SEALED) : true
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].collectEntries {
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[it.key.toString(), it.value.toString()]
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})
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}
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}
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tasks.register("tar", Tar) {
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archiveFileName = "${project.name}.tar"
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from(sourceSets.main.output)
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from {
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configurations.named('embedded').map {
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it.collect {
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it.isDirectory() ? it : zipTree(it)
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}
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}
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}
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}
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tasks.named(JavaPlugin.COMPILE_JAVA_TASK_NAME, JavaCompile) {
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doFirst {
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String path = project(":executable-jar:executable-jar-common").extensions.getByType(JavaPluginExtension).sourceSets.named("main").get().output.asPath
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options.compilerArgs.addAll(["--patch-module", "net.woggioni.executable.jar=$path"])
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}
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}
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@@ -0,0 +1,4 @@
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module net.woggioni.executable.jar {
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requires java.logging;
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requires static lombok;
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}
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@@ -0,0 +1,109 @@
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package net.woggioni.executable.jar;
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import java.io.InputStream;
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import java.lang.module.Configuration;
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import java.lang.module.ModuleFinder;
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import java.lang.reflect.Method;
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import java.net.URI;
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import java.net.URL;
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import java.nio.file.FileSystem;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.function.Function;
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import java.util.jar.Attributes;
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import java.util.jar.JarFile;
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import java.util.jar.Manifest;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import java.util.stream.StreamSupport;
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import lombok.SneakyThrows;
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import lombok.extern.java.Log;
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@Log
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public class Launcher {
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@SneakyThrows
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private static URI findCurrentJar() {
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String launcherClassName = Launcher.class.getName();
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URL url = Launcher.class.getClassLoader().getResource(launcherClassName.replace('.', '/') + ".class");
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if (url == null || !"jar".equals(url.getProtocol()))
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throw new IllegalStateException(String.format("The class %s must be used inside a JAR file", launcherClassName));
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String path = url.getPath();
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return new URI(path.substring(0, path.indexOf('!')));
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}
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@SneakyThrows
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public static void main(String[] args) {
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URI currentJar = findCurrentJar();
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URL manifestResource = Launcher.class.getResource("/" + JarFile.MANIFEST_NAME);
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if(Objects.isNull(manifestResource)) {
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throw new RuntimeException("Launcher manifest not found");
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}
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Manifest mf = new Manifest();
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try(InputStream is = manifestResource.openStream()) {
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mf.read(is);
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}
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try(FileSystem fs = FileSystems.newFileSystem(Path.of(currentJar.getPath()), null)) {
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Attributes mainAttributes = mf.getMainAttributes();
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List<Path> jarList = StreamSupport.stream(fs.getRootDirectories().spliterator(), false).flatMap(new Function<Path, Stream<Path>>() {
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@Override
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@SneakyThrows
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public Stream<Path> apply(Path path) {
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return Files.list(path.resolve(Constants.LIBRARIES_FOLDER))
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.filter(Files::isRegularFile)
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.filter(p -> p.getFileName().toString().endsWith(".jar"));
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}
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}).flatMap(new Function<Path, Stream<Path>>() {
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@Override
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@SneakyThrows
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public Stream<Path> apply(Path path) {
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return StreamSupport.stream(FileSystems.newFileSystem(path, null).getRootDirectories().spliterator(), false);
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}
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}).collect(Collectors.toUnmodifiableList());
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// for (Map.Entry<String, Attributes> entry : mf.getEntries().entrySet()) {
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// String jarEntryName = entry.getKey();
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// Attributes attributes = entry.getValue();
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// if (jarEntryName.startsWith(Constants.LIBRARIES_FOLDER + '/') && attributes.getValue(Constants.ManifestAttributes.ENTRY_HASH) != null) {
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// jarList.add(fs.getPath(jarEntryName));
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// }
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// }
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Path[] jars = jarList.toArray(new Path[jarList.size()]);
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ClassLoader pathClassLoader = new PathClassLoader(jars);
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String mainClassName = mainAttributes.getValue(Constants.ManifestAttributes.MAIN_CLASS);
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String mainModuleName = mainAttributes.getValue(Constants.ManifestAttributes.MAIN_MODULE);
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Class<?> mainClass;
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if (mainModuleName == null) {
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mainClass = pathClassLoader.loadClass(mainClassName);
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} else {
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ModuleLayer bootLayer = ModuleLayer.boot();
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Configuration bootConfiguration = ModuleLayer.boot().configuration();
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Configuration cfg = bootConfiguration.resolve(ModuleFinder.of(jars), ModuleFinder.of(), Arrays.asList(mainModuleName));
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ModuleLayer layer = bootLayer.defineModulesWithOneLoader(cfg, pathClassLoader);
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Module mainModule = layer.findModule(mainModuleName).orElseThrow(
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() -> new IllegalStateException(String.format("Main module '%s' not found", mainModuleName)));
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mainClass = Class.forName(mainModule, mainClassName);
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}
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try {
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Method mainMethod = mainClass.getMethod("main", String[].class);
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Class<?> returnType = mainMethod.getReturnType();
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if (mainMethod.getReturnType() != Void.TYPE) {
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throw new IllegalArgumentException(String.format("Main method in class '%s' " +
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"has wrong return type, expected '%s', found '%s' instead", mainClass, Void.class.getName(), returnType));
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}
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mainMethod.invoke(null, (Object) args);
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} catch (NoSuchMethodException nsme) {
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throw new IllegalArgumentException(String.format("No valid main method found in class '%s'", mainClass), nsme);
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}
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}
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}
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}
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@@ -0,0 +1,161 @@
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package net.woggioni.executable.jar;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import lombok.SneakyThrows;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.URI;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.URLStreamHandler;
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import java.nio.file.*;
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import java.nio.file.attribute.BasicFileAttributes;
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import java.util.*;
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/**
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* A classloader that loads classes from a {@link Path} instance
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*/
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public final class PathClassLoader extends ClassLoader {
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private final Iterable<Path> paths;
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static {
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registerAsParallelCapable();
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}
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public PathClassLoader(Path ...path) {
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this(Arrays.asList(path), null);
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}
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public PathClassLoader(Iterable<Path> paths) {
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this(paths, null);
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}
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public PathClassLoader(Iterable<Path> paths, ClassLoader parent) {
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super(parent);
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this.paths = paths;
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}
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@Override
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@SneakyThrows
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protected Class<?> findClass(String name) {
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String resource = name.replace('.', '/').concat(".class");
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for(Path path : paths) {
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Path classPath = path.resolve(resource);
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if (Files.exists(classPath)) {
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byte[] byteCode = Files.readAllBytes(classPath);
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return defineClass(name, byteCode, 0, byteCode.length);
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}
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}
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throw new ClassNotFoundException(name);
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}
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@Override
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@SneakyThrows
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protected URL findResource(String name) {
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for(Path path : paths) {
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Path resolved = path.resolve(name);
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if (Files.exists(resolved)) {
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return toURL(resolved);
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}
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}
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return null;
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}
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@Override
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protected Enumeration<URL> findResources(final String name) throws IOException {
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final List<URL> resources = new ArrayList<>(1);
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for(Path path : paths) {
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Files.walkFileTree(path, new SimpleFileVisitor<Path>() {
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@Override
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public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
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if (!name.isEmpty()) {
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this.addIfMatches(resources, file);
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}
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return super.visitFile(file, attrs);
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}
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@Override
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public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
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if (!name.isEmpty() || path.equals(dir)) {
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this.addIfMatches(resources, dir);
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}
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return super.preVisitDirectory(dir, attrs);
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}
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void addIfMatches(List<URL> resources, Path file) throws IOException {
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if (path.relativize(file).toString().equals(name)) {
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resources.add(toURL(file));
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}
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}
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});
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}
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return Collections.enumeration(resources);
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}
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private static URL toURL(Path path) throws IOException {
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return new URL(null, path.toUri().toString(), PathURLStreamHandler.INSTANCE);
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}
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private static final class PathURLConnection extends URLConnection {
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private final Path path;
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PathURLConnection(URL url, Path path) {
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super(url);
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this.path = path;
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}
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@Override
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public void connect() {}
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@Override
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public long getContentLengthLong() {
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try {
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return Files.size(this.path);
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} catch (IOException e) {
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throw new RuntimeException("could not get size of: " + this.path, e);
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}
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}
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@Override
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public InputStream getInputStream() throws IOException {
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return Files.newInputStream(this.path);
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}
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@Override
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public OutputStream getOutputStream() throws IOException {
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return Files.newOutputStream(this.path);
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}
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@Override
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@SneakyThrows
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public String getContentType() {
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return Files.probeContentType(this.path);
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}
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@Override
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@SneakyThrows
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public long getLastModified() {
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BasicFileAttributes attributes = Files.readAttributes(this.path, BasicFileAttributes.class);
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return attributes.lastModifiedTime().toMillis();
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}
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}
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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private static final class PathURLStreamHandler extends URLStreamHandler {
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static final URLStreamHandler INSTANCE = new PathURLStreamHandler();
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@Override
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@SneakyThrows
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protected URLConnection openConnection(URL url) {
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URI uri = url.toURI();
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Path path = Paths.get(uri);
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return new PathURLConnection(url, path);
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}
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}
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}
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@@ -0,0 +1,147 @@
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package net.woggioni.executable.jar;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.URI;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.URLStreamHandler;
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import java.nio.file.FileSystem;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.nio.file.attribute.BasicFileAttributes;
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import java.util.HashMap;
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import java.util.List;
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import java.util.function.Function;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import java.util.stream.StreamSupport;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import lombok.SneakyThrows;
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import org.junit.jupiter.api.Test;
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public class FooTest {
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@Test
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@SneakyThrows
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void foo() {
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Path.of(new URI("jar:file:///home/woggioni/code/wson/benchmark/build/libs/benchmark-executable-1.0.jar"));
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}
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@Test
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@SneakyThrows
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void foo2() {
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Path p = Path.of(new URI("file:///home/woggioni/code/wson/benchmark/build/libs/benchmark-executable-1.0.jar"));
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FileSystem fs = FileSystems.newFileSystem(p, null);
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StreamSupport.stream(fs.getRootDirectories().spliterator(), false).flatMap(new Function<Path, Stream<?>>() {
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@Override
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@SneakyThrows
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public Stream<?> apply(Path path) {
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return Files.list(path);
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}
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}).forEach(r -> {
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System.out.println(r);
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});
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}
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@Test
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@SneakyThrows
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void test() {
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Path fatJar = Path.of("/home/woggioni/code/wson/benchmark/build/libs/benchmark-executable-1.0.jar");
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List<Path> jars = StreamSupport.stream(FileSystems.newFileSystem(fatJar, null).getRootDirectories().spliterator(), false)
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.flatMap(new Function<Path, Stream<? extends Path>>() {
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@Override
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@SneakyThrows
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public Stream<? extends Path> apply(Path root) {
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Path libDir = root.resolve("/LIB-INF");
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if (Files.exists(libDir) && Files.isDirectory(libDir)) {
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return Files.list(libDir);
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} else {
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return Stream.empty();
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}
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}
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}).flatMap(new Function<Path, Stream<Path>>() {
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@Override
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@SneakyThrows
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public Stream<Path> apply(Path path) {
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return StreamSupport.stream(FileSystems.newFileSystem(path, null).getRootDirectories().spliterator(), false);
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}
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}).collect(Collectors.toList());
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PathClassLoader p = new PathClassLoader(jars.toArray(new Path[jars.size()]));
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Class<?> cl = p.loadClass("net.woggioni.wson.serialization.binary.JBONParser");
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System.out.println(cl);
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URL resource = p.findResource("citylots.json.xz");
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resource.openStream();
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}
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@Test
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@SneakyThrows
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void test2() {
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FileSystem fs = FileSystems.newFileSystem(new URI("jar:file:/home/woggioni/code/wson/benchmark/build/libs/benchmark-executable-1.0.jar"), new HashMap<>());
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String s = "jar:jar:file:///home/woggioni/code/wson/benchmark/build/libs/benchmark-executable-1.0.jar!/LIB-INF/wson-test-utils-1.0.jar!/citylots.json.xz";
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URI uri = new URI(s);
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Files.list(Path.of(uri)).forEach(System.out::println);
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}
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private static final class PathURLConnection extends URLConnection {
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private final Path path;
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PathURLConnection(URL url, Path path) {
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super(url);
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this.path = path;
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}
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@Override
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public void connect() {}
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@Override
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public long getContentLengthLong() {
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try {
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return Files.size(this.path);
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} catch (IOException e) {
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throw new RuntimeException("could not get size of: " + this.path, e);
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}
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}
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@Override
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public InputStream getInputStream() throws IOException {
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return Files.newInputStream(this.path);
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}
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@Override
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public OutputStream getOutputStream() throws IOException {
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return Files.newOutputStream(this.path);
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}
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@Override
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@SneakyThrows
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public String getContentType() {
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return Files.probeContentType(this.path);
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}
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@Override
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@SneakyThrows
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public long getLastModified() {
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BasicFileAttributes attributes = Files.readAttributes(this.path, BasicFileAttributes.class);
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return attributes.lastModifiedTime().toMillis();
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}
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}
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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private static final class PathURLStreamHandler extends URLStreamHandler {
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static final URLStreamHandler INSTANCE = new PathURLStreamHandler();
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@Override
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@SneakyThrows
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protected URLConnection openConnection(URL url) {
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URI uri = url.toURI();
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Path path = Paths.get(uri);
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return new PathURLConnection(url, path);
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}
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}
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}
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Reference in New Issue
Block a user