1/* 2 * Copyright (c) 2016, 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 24package jdk.test; 25 26import java.lang.module.ModuleDescriptor; 27import java.net.URI; 28import java.nio.file.FileSystem; 29import java.nio.file.FileSystems; 30import java.nio.file.Files; 31import java.nio.file.Path; 32import java.util.Arrays; 33import java.util.Collections; 34import java.util.HashMap; 35import java.util.List; 36import java.util.Map; 37import java.util.Optional; 38 39 40/* 41 * Main class to verify if ModuleDescriptor carries the correct version 42 */ 43public class Main { 44 static final Map<String, String> nameToVersion = new HashMap<>(); 45 46 // jdk.test.Main $count $module-name... $version... 47 public static void main(String... args) throws Exception { 48 int count = args.length > 0 ? Integer.valueOf(args[0]) : 0; 49 if (count < 1 || args.length != count*2+1) { 50 throw new IllegalArgumentException(Arrays.toString(args)); 51 } 52 53 List<String> modules = List.of(Arrays.copyOfRange(args, 1, 1+count)); 54 List<String> versions = List.of(Arrays.copyOfRange(args, 1+count, args.length)); 55 for (int i=0; i < modules.size(); i++) { 56 System.out.format("module %s expects %s version%n", 57 modules.get(i), versions.get(i)); 58 nameToVersion.put(modules.get(i), versions.get(i)); 59 } 60 61 FileSystem fs = FileSystems.newFileSystem(URI.create("jrt:/"), 62 Collections.emptyMap()); 63 // check the module descriptor of a system module 64 for (int i=0; i < modules.size(); i++) { 65 String mn = modules.get(i); 66 Module module = ModuleLayer.boot().findModule(mn).orElseThrow( 67 () -> new RuntimeException(mn + " not found") 68 ); 69 70 // check ModuleDescriptor from the run-time 71 validate(module.getDescriptor()); 72 73 // check module-info.class in the image 74 Path path = fs.getPath("/", "modules", modules.get(i), "module-info.class"); 75 validate(ModuleDescriptor.read(Files.newInputStream(path))); 76 } 77 } 78 79 static void validate(ModuleDescriptor descriptor) { 80 checkVersion(descriptor.name(), descriptor.version()); 81 descriptor.requires() 82 .stream() 83 .filter(r -> !r.name().equals("java.base")) 84 .forEach(r -> checkVersion(r.name(), r.compiledVersion())); 85 } 86 87 static void checkVersion(String mn, Optional<ModuleDescriptor.Version> version) { 88 boolean matched; 89 String v = nameToVersion.get(mn); 90 if (version.isPresent()) { 91 matched = version.get().toString().equals(v); 92 } else { 93 // 0 indicate no version 94 matched = v.equals("0"); 95 } 96 97 if (!matched) { 98 throw new RuntimeException(mn + " mismatched version " + version 99 + " expected: " + v); 100 } 101 } 102} 103