| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @modules jdk.zipfs |
| * @library /lib/testlibrary |
| * @build ModulesInCustomFileSystem JarUtils m1/* m2/* |
| * @run testng/othervm ModulesInCustomFileSystem |
| * @summary Test ModuleFinder to find modules in a custom file system |
| */ |
| |
| import java.io.File; |
| import java.lang.module.Configuration; |
| import java.lang.module.ModuleFinder; |
| import java.lang.module.ModuleReader; |
| import java.lang.module.ModuleReference; |
| import java.lang.reflect.Method; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Set; |
| |
| import org.testng.annotations.Test; |
| import static org.testng.Assert.*; |
| |
| @Test |
| public class ModulesInCustomFileSystem { |
| private static final Path HERE = Paths.get(""); |
| |
| /** |
| * Test exploded modules in a JAR file system. |
| */ |
| public void testExplodedModulesInJarFileSystem() throws Exception { |
| Path m1 = findModuleDirectory("m1"); |
| Path m2 = findModuleDirectory("m2"); |
| Path mlib = m1.getParent(); |
| assertEquals(mlib, m2.getParent()); |
| |
| // create JAR file containing m1/** and m2/** |
| Path jar = Files.createTempDirectory(HERE, "mlib").resolve("modules.jar"); |
| JarUtils.createJarFile(jar, mlib); |
| testJarFileSystem(jar); |
| } |
| |
| /** |
| * Test modular JARs in a JAR file system |
| */ |
| public void testModularJARsInJarFileSystem() throws Exception { |
| Path m1 = findModuleDirectory("m1"); |
| Path m2 = findModuleDirectory("m2"); |
| Path contents = Files.createTempDirectory(HERE, "contents"); |
| JarUtils.createJarFile(contents.resolve("m1.jar"), m1); |
| JarUtils.createJarFile(contents.resolve("m2.jar"), m2); |
| |
| // create JAR file containing m1.jar and m2.jar |
| Path jar = Files.createTempDirectory(HERE, "mlib").resolve("modules.jar"); |
| JarUtils.createJarFile(jar, contents); |
| testJarFileSystem(jar); |
| } |
| |
| /** |
| * Opens a JAR file as a file system |
| */ |
| private void testJarFileSystem(Path jar) throws Exception { |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); |
| try (FileSystem fs = FileSystems.newFileSystem(jar, scl)) { |
| // ModuleFinder to find modules in top-level directory |
| Path top = fs.getPath("/"); |
| ModuleFinder finder = ModuleFinder.of(top); |
| |
| // list the modules |
| listAllModules(finder); |
| |
| // load modules into child layer, invoking m1/p.Main |
| loadAndRunModule(finder); |
| } |
| } |
| |
| /** |
| * List all modules that the finder finds and the resources in the module. |
| */ |
| private void listAllModules(ModuleFinder finder) throws Exception { |
| for (ModuleReference mref : finder.findAll()) { |
| System.out.println(mref.descriptor()); |
| try (ModuleReader reader = mref.open()) { |
| reader.list().forEach(name -> System.out.format(" %s%n", name)); |
| } |
| } |
| } |
| |
| /** |
| * Creates a child layer with m1 and m2, invokes m1/p.Main to ensure that |
| * classes can be loaded. |
| */ |
| private void loadAndRunModule(ModuleFinder finder) throws Exception { |
| ModuleLayer bootLayer = ModuleLayer.boot(); |
| Configuration cf = bootLayer.configuration() |
| .resolve(finder, ModuleFinder.of(), Set.of("m1")); |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); |
| ModuleLayer layer = bootLayer.defineModulesWithOneLoader(cf, scl); |
| Class<?> c = layer.findLoader("m1").loadClass("p.Main"); |
| Method m = c.getMethod("main", String[].class); |
| m.invoke(null, (Object)new String[0]); |
| } |
| |
| /** |
| * Find the directory for a module on the module path |
| */ |
| private Path findModuleDirectory(String name) { |
| String mp = System.getProperty("jdk.module.path"); |
| for (String element : mp.split(File.pathSeparator)) { |
| Path dir = Paths.get(element).resolve(name); |
| if (Files.exists(dir)) { |
| return dir; |
| } |
| } |
| assertFalse(true); |
| return null; |
| } |
| } |