250 lines
8.6 KiB
Java
250 lines
8.6 KiB
Java
/*
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* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6479237 8291641
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* @summary Test the format of StackTraceElement::toString and its serial form
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* @modules java.logging
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*
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* @run main SerialTest
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*/
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import java.io.BufferedInputStream;
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import java.io.BufferedOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.OutputStream;
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import java.io.UncheckedIOException;
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import java.lang.reflect.Method;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLClassLoader;
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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.util.Arrays;
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import java.util.logging.Logger;
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public class SerialTest {
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private static final Path SER_DIR = Paths.get("sers");
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private static final String JAVA_BASE = "java.base";
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private static final String JAVA_LOGGING = "java.logging";
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private static boolean isImage;
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public static void main(String... args) throws Exception {
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Files.createDirectories(SER_DIR);
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// detect if exploded image build
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Path home = Paths.get(System.getProperty("java.home"));
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isImage = Files.exists(home.resolve("lib").resolve("modules"));
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// test stack trace from built-in loaders
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try {
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Logger.getLogger(null);
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} catch (NullPointerException e) {
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Arrays.stream(e.getStackTrace())
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.filter(ste -> ste.getClassName().startsWith("java.util.logging.") ||
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ste.getClassName().equals("SerialTest"))
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.forEach(SerialTest::test);
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}
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// test stack trace with class loader name from other class loader
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Loader loader = new Loader("myloader");
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Class<?> cls = Class.forName("SerialTest", true, loader);
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Method method = cls.getMethod("throwException");
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StackTraceElement ste = (StackTraceElement)method.invoke(null);
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test(ste, loader);
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// verify the class loader name and in the stack trace
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if (!cls.getClassLoader().getName().equals("myloader.hacked")) {
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throw new RuntimeException("Unexpected loader name: " +
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cls.getClassLoader().getName());
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}
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if (!ste.getClassLoaderName().equals("myloader")) {
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throw new RuntimeException("Unexpected loader name: " +
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ste.getClassLoaderName());
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}
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}
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private static void test(StackTraceElement ste) {
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test(ste, null);
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}
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private static void test(StackTraceElement ste, ClassLoader loader) {
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try {
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SerialTest serialTest = new SerialTest(ste);
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StackTraceElement ste2 = serialTest.serialize().deserialize();
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System.out.println(ste2);
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// verify StackTraceElement::toString returns the same string
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if (!ste.equals(ste2) || !ste.toString().equals(ste2.toString())) {
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throw new RuntimeException(ste + " != " + ste2);
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}
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String mn = ste.getModuleName();
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if (mn != null) {
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switch (mn) {
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case JAVA_BASE:
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case JAVA_LOGGING:
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checkNamedModule(ste, loader, false);
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break;
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default: // ignore
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}
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} else {
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checkUnnamedModule(ste, loader);
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}
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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}
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private static void checkUnnamedModule(StackTraceElement ste, ClassLoader loader) {
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String mn = ste.getModuleName();
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String s = ste.toString();
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int i = s.indexOf('/');
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if (mn != null) {
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throw new RuntimeException("expected null but got " + mn);
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}
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if (loader != null) {
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// Expect <loader>//<classname>.<method>(<src>:<ln>)
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if (i <= 0) {
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throw new RuntimeException("loader name missing: " + s);
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}
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if (!getLoaderName(loader).equals(s.substring(0, i))) {
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throw new RuntimeException("unexpected loader name: " + s);
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}
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int j = s.substring(i+1).indexOf('/');
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if (j != 0) {
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throw new RuntimeException("unexpected element for unnamed module: " + s);
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}
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}
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}
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/*
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* Loader::getName is overridden to return some other name
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*/
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private static String getLoaderName(ClassLoader loader) {
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if (loader == null)
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return "";
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if (loader instanceof Loader) {
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return ((Loader) loader).name;
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} else {
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return loader.getName();
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}
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}
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private static void checkNamedModule(StackTraceElement ste,
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ClassLoader loader,
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boolean showVersion) {
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String loaderName = getLoaderName(loader);
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String mn = ste.getModuleName();
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String s = ste.toString();
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int i = s.indexOf('/');
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if (mn == null) {
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throw new RuntimeException("expected module name: " + s);
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}
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if (i <= 0) {
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throw new RuntimeException("module name missing: " + s);
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}
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// Expect <module>/<classname>.<method>(<src>:<ln>)
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if (!loaderName.isEmpty()) {
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throw new IllegalArgumentException(loaderName);
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}
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// <module>: name@version
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int j = s.indexOf('@');
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if ((showVersion && j <= 0) || (!showVersion && j >= 0)) {
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throw new RuntimeException("unexpected version: " + s);
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}
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String name = j < 0 ? s.substring(0, i) : s.substring(0, j);
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if (!name.equals(mn)) {
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throw new RuntimeException("unexpected module name: " + s);
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}
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}
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private final Path ser;
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private final StackTraceElement ste;
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SerialTest(StackTraceElement ste) throws IOException {
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this.ser = Files.createTempFile(SER_DIR, "SerialTest", ".ser");
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this.ste = ste;
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}
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private StackTraceElement deserialize() throws IOException {
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try (InputStream in = Files.newInputStream(ser);
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BufferedInputStream bis = new BufferedInputStream(in);
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ObjectInputStream ois = new ObjectInputStream(bis)) {
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return (StackTraceElement)ois.readObject();
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} catch (ClassNotFoundException e) {
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throw new RuntimeException(e);
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}
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}
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private SerialTest serialize() throws IOException {
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try (OutputStream out = Files.newOutputStream(ser);
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BufferedOutputStream bos = new BufferedOutputStream(out);
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ObjectOutputStream oos = new ObjectOutputStream(bos)) {
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oos.writeObject(ste);
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}
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return this;
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}
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public static StackTraceElement throwException() {
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try {
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Integer.parseInt(null);
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} catch (NumberFormatException e) {
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return Arrays.stream(e.getStackTrace())
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.filter(ste -> ste.getMethodName().equals("throwException"))
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.findFirst().get();
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}
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return null;
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}
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public static class Loader extends URLClassLoader {
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final String name;
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Loader(String name) throws MalformedURLException {
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super(name, new URL[] { testClassesURL() } , null);
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this.name = name;
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}
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private static URL testClassesURL() throws MalformedURLException {
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Path path = Paths.get(System.getProperty("test.classes"));
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return path.toUri().toURL();
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}
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public String getName() {
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return name + ".hacked";
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}
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}
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}
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