1 /*
   2  * Copyright (c) 2020, 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 
  25 /**
  26  * @test
  27  * @bug 8244778
  28  * @requires vm.cds
  29  * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
  30  * @run driver NewModuleFinderTest
  31  * @summary Make sure the archived module graph can co-exist with modules that are
  32  *          dynamically defined at runtime using the ModuleFinder API.
  33  */
  34 
  35 import java.lang.module.Configuration;
  36 import java.lang.module.ModuleFinder;
  37 import java.nio.file.Path;
  38 import java.nio.file.Paths;
  39 import java.util.Set;
  40 import jdk.test.lib.cds.CDSTestUtils;
  41 import jdk.test.lib.process.ProcessTools;
  42 import jdk.test.lib.process.OutputAnalyzer;
  43 
  44 public class NewModuleFinderTest {
  45 
  46     private static final Path USER_DIR = Paths.get(System.getProperty("user.dir"));
  47     private static final String TEST_SRC = System.getProperty("test.src");
  48     private static final Path SRC_DIR = Paths.get(TEST_SRC, "modulepath/src");
  49     private static final Path MODS_DIR = Paths.get("mods");
  50 
  51     // the module name of the test module
  52     private static final String TEST_MODULE = "com.simple";
  53 
  54     // the module main class
  55     private static final String MAIN_CLASS = "com.simple.Main";
  56 
  57     private static final Set<String> modules = Set.of(TEST_MODULE);
  58 
  59     public static void buildTestModule() throws Exception {
  60         // javac -d mods/$TESTMODULE --module-path MOD_DIR modulepath/src/$TESTMODULE/**
  61         JarBuilder.compileModule(SRC_DIR.resolve(TEST_MODULE),
  62                                  MODS_DIR.resolve(TEST_MODULE),
  63                                  MODS_DIR.toString());
  64     }
  65 
  66     public static void main(String... args) throws Exception {
  67         // compile the modules and create the modular jar files
  68         buildTestModule();
  69 
  70         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  71             "-Xlog:cds",
  72             "-Xlog:module=debug",
  73             "NewModuleFinderTest$Helper");
  74         OutputAnalyzer out = CDSTestUtils.executeAndLog(pb, "exec");
  75         out.shouldHaveExitValue(0);
  76         out.shouldContain("define_module(): creation of module: com.simple,");
  77     }
  78 
  79     static class Helper {
  80         public static void main(String... args) {
  81             ModuleFinder finder = ModuleFinder.of(MODS_DIR);
  82             Configuration parent = ModuleLayer.boot().configuration();
  83             Configuration cf = parent.resolveAndBind(ModuleFinder.of(),
  84                                                      finder,
  85                                                      modules);
  86 
  87             ClassLoader scl = ClassLoader.getSystemClassLoader();
  88             ModuleLayer layer = ModuleLayer.boot().defineModulesWithManyLoaders(cf, scl);
  89 
  90             Module m1 = layer.findModule(TEST_MODULE).get();
  91             System.out.println("Module = " + m1);
  92             if (m1 != null) {
  93                 System.out.println("Success");
  94             } else {
  95                 throw new RuntimeException("Module should not be null");
  96             }
  97         }
  98     }
  99 }