1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package p4; 25 26 import java.io.IOException; 27 import java.io.InputStream; 28 import java.lang.module.ModuleDescriptor; 29 import java.lang.module.ModuleFinder; 30 import java.lang.reflect.Layer; 31 import java.net.URI; 32 import java.nio.file.FileSystem; 33 import java.nio.file.FileSystems; 34 import java.nio.file.Files; 35 import java.nio.file.Path; 36 import java.util.Collections; 37 import java.util.Set; 38 39 public class Main { 40 // the system module plugin by default drops ModuleTarget attribute 41 private static boolean expectModuleTarget = false; 42 public static void main(String... args) throws IOException { 43 if (args.length > 0) { 44 if (!args[0].equals("retainModuleTarget")) { 45 throw new IllegalArgumentException(args[0]); 46 } 47 48 expectModuleTarget = true; 49 } 50 51 // java.base is packaged with osName/osArch/osVersion 52 ModuleDescriptor md = Layer.boot().findModule("java.base").get() 53 .getDescriptor(); 54 if (!md.osName().isPresent() || 55 !md.osArch().isPresent() || 56 !md.osVersion().isPresent()) { 57 throw new RuntimeException("osName/osArch/osVersion is missing: " + 58 md.osName() + " " + md.osArch() + " " + md.osVersion()); 59 } 60 61 // verify module-info.class for m1 and m4 62 checkModule("m1", "p1", "p2"); 63 checkModule("m4", "p4"); 64 } 65 66 private static void checkModule(String mn, String... packages) throws IOException { 67 // verify ModuleDescriptor from the runtime module 68 ModuleDescriptor md = Layer.boot().findModule(mn).get() 69 .getDescriptor(); 70 checkModuleDescriptor(md, packages); 71 72 // verify ModuleDescriptor from module-info.class read from ModuleReader 73 try (InputStream in = ModuleFinder.ofSystem().find(mn).get() 74 .open().open("module-info.class").get()) { 75 checkModuleDescriptor(ModuleDescriptor.read(in), packages); 76 } 77 78 // verify ModuleDescriptor from module-info.class read from jimage 79 FileSystem fs = FileSystems.newFileSystem(URI.create("jrt:/"), 80 Collections.emptyMap()); 81 Path path = fs.getPath("/", "modules", mn, "module-info.class"); 82 checkModuleDescriptor(ModuleDescriptor.read(Files.newInputStream(path)), packages); 83 } 84 85 static void checkModuleDescriptor(ModuleDescriptor md, String... packages) { 86 String mainClass = md.name().replace('m', 'p') + ".Main"; 87 if (!md.mainClass().get().equals(mainClass)) { 88 throw new RuntimeException(md.mainClass().toString()); 89 } 90 91 if (expectModuleTarget) { 92 // ModuleTarget attribute is retained 93 if (!md.osName().isPresent() || !md.osArch().isPresent()) { 94 throw new RuntimeException("osName or osArch is missing: " + 95 md.osName() + " " + md.osArch()); 96 } 97 } else { 98 // by default ModuleTarget attribute is dropped 99 if (md.osName().isPresent() || md.osArch().isPresent()) { 100 throw new RuntimeException("osName and osArch should not be set: " + 101 md.osName() + " " + md.osArch()); 102 } 103 } 104 105 if (md.osVersion().isPresent()) { 106 throw new RuntimeException("Expected no osVersion set: " + md.osVersion()); 107 } 108 109 Set<String> pkgs = md.packages(); 110 if (!pkgs.equals(Set.of(packages))) { 111 throw new RuntimeException(pkgs + " expected: " + Set.of(packages)); 112 } 113 } 114 }