Java example source code file (TestAppletLoggerContext.java)
The TestAppletLoggerContext.java Java example source code/*
* Copyright (c) 2013, 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.
*/
import java.security.CodeSource;
import java.security.Permission;
import java.security.PermissionCollection;
import java.security.Permissions;
import java.security.Policy;
import java.security.ProtectionDomain;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.LogManager;
import java.util.logging.Logger;
import java.util.logging.LoggingPermission;
import sun.misc.JavaAWTAccess;
import sun.misc.SharedSecrets;
/*
* @test
* @bug 8017174 8010727 8019945
* @summary NPE when using Logger.getAnonymousLogger or
* LogManager.getLogManager().getLogger
*
* @run main/othervm -Dtest.security=off TestAppletLoggerContext LoadingApplet
* @run main/othervm -Dtest.security=on TestAppletLoggerContext LoadingApplet
* @run main/othervm -Dtest.security=off TestAppletLoggerContext LoadingMain
* @run main/othervm -Dtest.security=on TestAppletLoggerContext LoadingMain
* @run main/othervm -Dtest.security=off TestAppletLoggerContext One
* @run main/othervm -Dtest.security=on TestAppletLoggerContext One
* @run main/othervm -Dtest.security=off TestAppletLoggerContext Two
* @run main/othervm -Dtest.security=on TestAppletLoggerContext Two
* @run main/othervm -Dtest.security=off TestAppletLoggerContext Three
* @run main/othervm -Dtest.security=on TestAppletLoggerContext Three
* @run main/othervm -Dtest.security=off TestAppletLoggerContext Four
* @run main/othervm -Dtest.security=on TestAppletLoggerContext Four
* @run main/othervm -Dtest.security=off TestAppletLoggerContext Five
* @run main/othervm -Dtest.security=on TestAppletLoggerContext Five
* @run main/othervm -Dtest.security=off TestAppletLoggerContext Six
* @run main/othervm -Dtest.security=on TestAppletLoggerContext Six
* @run main/othervm -Dtest.security=off TestAppletLoggerContext Seven
* @run main/othervm -Dtest.security=on TestAppletLoggerContext Seven
* @run main/othervm -Dtest.security=off TestAppletLoggerContext
* @run main/othervm -Dtest.security=on TestAppletLoggerContext
*/
// NOTE: We run in other VM in order to 1. switch security manager and 2. cause
// LogManager class to be loaded anew.
public class TestAppletLoggerContext {
// Avoids the hassle of dealing with files and system props...
static class SimplePolicy extends Policy {
private final Permissions perms;
public SimplePolicy(Permission... permissions) {
perms = new Permissions();
for (Permission permission : permissions) {
perms.add(permission);
}
}
@Override
public PermissionCollection getPermissions(CodeSource cs) {
return perms;
}
@Override
public PermissionCollection getPermissions(ProtectionDomain pd) {
return perms;
}
@Override
public boolean implies(ProtectionDomain pd, Permission p) {
return perms.implies(p);
}
}
// The bridge class initializes the logging system.
// It stubs the applet context in order to simulate context changes.
//
public static class Bridge {
private static class JavaAWTAccessStub implements JavaAWTAccess {
boolean active = true;
private static class TestExc {
private final Map<Object, Object> map = new HashMap<>();
void put(Object key, Object v) { map.put(key, v); }
Object get(Object key) { return map.get(key); }
void remove(Object o) { map.remove(o); }
public static TestExc exc(Object o) {
return TestExc.class.cast(o);
}
}
TestExc exc;
@Override
public Object getAppletContext() { return active ? exc : null; }
}
final static JavaAWTAccessStub javaAwtAccess = new JavaAWTAccessStub();
public static void init() {
SharedSecrets.setJavaAWTAccess(javaAwtAccess);
if (System.getProperty("test.security", "on").equals("on")) {
Policy p = new SimplePolicy(new LoggingPermission("control", null),
new RuntimePermission("setContextClassLoader"),
new RuntimePermission("shutdownHooks"));
Policy.setPolicy(p);
System.setSecurityManager(new SecurityManager());
}
}
public static void changeContext() {
System.out.println("... Switching to a new applet context ...");
javaAwtAccess.active = true;
javaAwtAccess.exc = new JavaAWTAccessStub.TestExc();
}
public static void desactivate() {
System.out.println("... Running with no applet context ...");
javaAwtAccess.exc = null;
javaAwtAccess.active = false;
}
public static class CustomAnonymousLogger extends Logger {
public CustomAnonymousLogger() {
this("");
}
public CustomAnonymousLogger(String name) {
super(null, null);
System.out.println( " LogManager: " +LogManager.getLogManager());
System.out.println( " getLogger: " +LogManager.getLogManager().getLogger(name));
setParent(LogManager.getLogManager().getLogger(name));
}
}
public static class CustomLogger extends Logger {
CustomLogger(String name) {
super(name, null);
}
}
}
public static enum TestCase {
LoadingApplet, LoadingMain, One, Two, Three, Four, Five, Six, Seven;
public void test() {
switch(this) {
// When run - each of these two tests must be
// run before any other tests and before each other.
case LoadingApplet: testLoadingApplet(); break;
case LoadingMain: testLoadingMain(); break;
case One: testOne(); break;
case Two: testTwo(); break;
case Three: testThree(); break;
case Four: testFour(); break;
case Five: testFive(); break;
case Six: testSix(); break;
case Seven: testSeven(); break;
}
}
public String describe() {
switch(this) {
case LoadingApplet:
return "Test that when the LogManager class is"
+ " loaded in an applet thread first,"
+ "\n all LoggerContexts are correctly initialized";
case LoadingMain:
return "Test that when the LogManager class is"
+ " loaded in the main thread first,"
+ "\n all LoggerContexts are correctly initialized";
case One:
return "Test that Logger.getAnonymousLogger()"
+ " and new CustomAnonymousLogger() don't throw NPE";
case Two:
return "Test that Logger.getLogger(\"\")"
+ " does not return null nor throws NPE";
case Three:
return "Test that LogManager.getLogManager().getLogger(\"\")"
+ " does not return null nor throws NPE";
case Four:
return "Test that Logger.getLogger(Logger.GLOBAL_LOGGER_NAME)"
+ " does not return null,\n and that"
+ " new CustomAnonymousLogger(Logger.GLOBAL_LOGGER_NAME)"
+ " does not throw NPE";
case Five:
return "Test that LogManager.getLogManager().getLogger(Logger.GLOBAL_LOGGER_NAME)"
+ "\n does not return null nor throws NPE";
case Six:
return "Test that manager.getLogger(Logger.GLOBAL_LOGGER_NAME)"
+ " returns null\n when manager is not the default"
+ " LogManager instance.\n"
+ "Test adding a new logger named \"global\" in that"
+ " non default instance.";
case Seven: return "Test that manager.getLogger(\"\")"
+ " returns null\n when manager is not the default"
+ " LogManager instance.\n"
+ "Test adding a new logger named \"\" in that"
+ " non default instance.";
default: return "Undefined";
}
}
};
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Bridge.init();
EnumSet<TestCase> tests = EnumSet.noneOf(TestCase.class);
for (String arg : args) {
tests.add(TestCase.valueOf(arg));
}
if (args.length == 0) {
tests = EnumSet.complementOf(EnumSet.of(TestCase.LoadingMain));
}
final EnumSet<TestCase> loadingTests =
EnumSet.of(TestCase.LoadingApplet, TestCase.LoadingMain);
int testrun = 0;
for (TestCase test : tests) {
if (loadingTests.contains(test)) {
if (testrun > 0) {
throw new UnsupportedOperationException("Test case "
+ test + " must be executed first!");
}
}
System.out.println("Testing "+ test+": ");
System.out.println(test.describe());
try {
test.test();
} catch (Exception x) {
throw new Error(String.valueOf(test)
+ (System.getSecurityManager() == null ? " without " : " with ")
+ "security failed: "+x+"\n "+"FAILED: "+test.describe()+"\n", x);
} finally {
testrun++;
}
Bridge.changeContext();
System.out.println("PASSED: "+ test);
}
}
public static void testLoadingApplet() {
Bridge.changeContext();
Logger bar = new Bridge.CustomLogger("com.foo.Bar");
LogManager.getLogManager().addLogger(bar);
assertNotNull(bar.getParent());
testParent(bar);
testParent(LogManager.getLogManager().getLogger("global"));
testParent(LogManager.getLogManager().getLogger(bar.getName()));
Bridge.desactivate();
Logger foo = new Bridge.CustomLogger("com.foo.Foo");
boolean b = LogManager.getLogManager().addLogger(foo);
assertEquals(Boolean.TRUE, Boolean.valueOf(b));
assertNotNull(foo.getParent());
testParent(foo);
testParent(LogManager.getLogManager().getLogger("global"));
testParent(LogManager.getLogManager().getLogger(foo.getName()));
}
public static void testLoadingMain() {
Bridge.desactivate();
Logger bar = new Bridge.CustomLogger("com.foo.Bar");
LogManager.getLogManager().addLogger(bar);
assertNotNull(bar.getParent());
testParent(bar);
testParent(LogManager.getLogManager().getLogger("global"));
testParent(LogManager.getLogManager().getLogger(bar.getName()));
Bridge.changeContext();
Logger foo = new Bridge.CustomLogger("com.foo.Foo");
boolean b = LogManager.getLogManager().addLogger(foo);
assertEquals(Boolean.TRUE, Boolean.valueOf(b));
assertNotNull(foo.getParent());
testParent(foo);
testParent(LogManager.getLogManager().getLogger("global"));
testParent(LogManager.getLogManager().getLogger(foo.getName()));
}
public static void testOne() {
for (int i=0; i<3 ; i++) {
Logger logger1 = Logger.getAnonymousLogger();
Logger logger1b = Logger.getAnonymousLogger();
Bridge.changeContext();
Logger logger2 = Logger.getAnonymousLogger();
Logger logger2b = Logger.getAnonymousLogger();
Bridge.changeContext();
Logger logger3 = new Bridge.CustomAnonymousLogger();
Logger logger3b = new Bridge.CustomAnonymousLogger();
Bridge.changeContext();
Logger logger4 = new Bridge.CustomAnonymousLogger();
Logger logger4b = new Bridge.CustomAnonymousLogger();
}
}
public static void testTwo() {
for (int i=0; i<3 ; i++) {
Logger logger1 = Logger.getLogger("");
Logger logger1b = Logger.getLogger("");
assertNotNull(logger1);
assertNotNull(logger1b);
assertEquals(logger1, logger1b);
Bridge.changeContext();
Logger logger2 = Logger.getLogger("");
Logger logger2b = Logger.getLogger("");
assertNotNull(logger2);
assertNotNull(logger2b);
assertEquals(logger2, logger2b);
assertEquals(logger1, logger2);
}
}
public static void testThree() {
for (int i=0; i<3 ; i++) {
Logger logger1 = LogManager.getLogManager().getLogger("");
Logger logger1b = LogManager.getLogManager().getLogger("");
assertNotNull(logger1);
assertNotNull(logger1b);
assertEquals(logger1, logger1b);
Bridge.changeContext();
Logger logger2 = LogManager.getLogManager().getLogger("");
Logger logger2b = LogManager.getLogManager().getLogger("");
assertNotNull(logger2);
assertNotNull(logger2b);
assertEquals(logger2, logger2b);
assertEquals(logger1, logger2);
}
}
public static void testFour() {
for (int i=0; i<3 ; i++) {
Logger logger1 = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger1b = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNotNull(logger1);
assertNotNull(logger1b);
assertEquals(logger1, logger1b);
Bridge.changeContext();
Logger logger2 = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger2b = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNotNull(logger2);
assertNotNull(logger2b);
assertEquals(logger2, logger2b);
assertEquals(logger1, logger2);
Bridge.changeContext();
Logger logger3 = new Bridge.CustomAnonymousLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger3b = new Bridge.CustomAnonymousLogger(Logger.GLOBAL_LOGGER_NAME);
Bridge.changeContext();
Logger logger4 = new Bridge.CustomAnonymousLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger4b = new Bridge.CustomAnonymousLogger(Logger.GLOBAL_LOGGER_NAME);
}
}
public static void testFive() {
for (int i=0; i<3 ; i++) {
Logger logger1 = LogManager.getLogManager().getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger1b = LogManager.getLogManager().getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNotNull(logger1);
assertNotNull(logger1b);
assertEquals(logger1, logger1b);
Bridge.changeContext();
Logger logger2 = LogManager.getLogManager().getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger2b = LogManager.getLogManager().getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNotNull(logger2);
assertNotNull(logger2b);
assertEquals(logger2, logger2b);
assertEquals(logger1, logger2);
}
}
/**
* This test is designed to test the behavior of additional LogManager instances.
* It must be noted that if the security manager is off, then calling
* Bridge.changeContext() has actually no effect - which explains why we have
* some differences between the cases security manager on & security manager
* off.
**/
public static void testSix() {
for (int i=0; i<3 ; i++) {
Bridge.desactivate();
LogManager manager = new LogManager() {};
Logger logger1 = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger1b = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNull(logger1);
assertNull(logger1b);
Logger global = new Bridge.CustomLogger(Logger.GLOBAL_LOGGER_NAME);
manager.addLogger(global);
Logger logger2 = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger2b = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNotNull(logger2);
assertNotNull(logger2b);
assertEquals(logger2, global);
assertEquals(logger2b, global);
assertNull(manager.getLogger(""));
assertNull(manager.getLogger(""));
for (int j = 0; j<3; j++) {
Bridge.changeContext();
// this is not a supported configuration:
// We are in an applet context with several log managers.
// We however need to check our assumptions...
// Applet context => root logger and global logger should also be null.
Logger expected = (System.getSecurityManager() == null ? global : null);
Logger logger3 = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger3b = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
assertEquals(expected, logger3);
assertEquals(expected, logger3b);
Logger global2 = new Bridge.CustomLogger(Logger.GLOBAL_LOGGER_NAME);
manager.addLogger(global2);
Logger logger4 = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger4b = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNotNull(logger4);
assertNotNull(logger4b);
expected = (System.getSecurityManager() == null ? global : global2);;
assertEquals(logger4, expected);
assertEquals(logger4b, expected);
Logger logger5 = manager.getLogger("");
Logger logger5b = manager.getLogger("");
Logger expectedRoot = null;
assertEquals(logger5, expectedRoot);
assertEquals(logger5b, expectedRoot);
}
}
}
/**
* This test is designed to test the behavior of additional LogManager instances.
* It must be noted that if the security manager is off, then calling
* Bridge.changeContext() has actually no effect - which explains why we have
* some differences between the cases security manager on & security manager
* off.
**/
public static void testSeven() {
for (int i=0; i<3 ; i++) {
Bridge.desactivate();
LogManager manager = new LogManager() {};
Logger logger1 = manager.getLogger("");
Logger logger1b = manager.getLogger("");
assertNull(logger1);
assertNull(logger1b);
Logger global = new Bridge.CustomLogger(Logger.GLOBAL_LOGGER_NAME);
manager.addLogger(global);
Logger logger2 = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger2b = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
assertNotNull(logger2);
assertNotNull(logger2b);
assertEquals(logger2, global);
assertEquals(logger2b, global);
Logger logger3 = manager.getLogger("");
Logger logger3b = manager.getLogger("");
assertNull(logger3);
assertNull(logger3b);
Logger root = new Bridge.CustomLogger("");
manager.addLogger(root);
Logger logger4 = manager.getLogger("");
Logger logger4b = manager.getLogger("");
assertNotNull(logger4);
assertNotNull(logger4b);
assertEquals(logger4, root);
assertEquals(logger4b, root);
for (int j = 0 ; j < 3 ; j++) {
Bridge.changeContext();
// this is not a supported configuration:
// We are in an applet context with several log managers.
// We however need to check our assumptions...
// Applet context => root logger and global logger should also be null.
Logger logger5 = manager.getLogger("");
Logger logger5b = manager.getLogger("");
Logger expectedRoot = (System.getSecurityManager() == null ? root : null);
assertEquals(logger5, expectedRoot);
assertEquals(logger5b, expectedRoot);
if (System.getSecurityManager() != null) {
assertNull(manager.getLogger(Logger.GLOBAL_LOGGER_NAME));
} else {
assertEquals(global, manager.getLogger(Logger.GLOBAL_LOGGER_NAME));
}
Logger global2 = new Bridge.CustomLogger(Logger.GLOBAL_LOGGER_NAME);
manager.addLogger(global2);
Logger logger6 = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger logger6b = manager.getLogger(Logger.GLOBAL_LOGGER_NAME);
Logger expectedGlobal = (System.getSecurityManager() == null ? global : global2);
assertNotNull(logger6);
assertNotNull(logger6b);
assertEquals(logger6, expectedGlobal);
assertEquals(logger6b, expectedGlobal);
if (System.getSecurityManager() != null) {
assertNull(manager.getLogger(""));
} else {
assertEquals(root, manager.getLogger(""));
}
Logger root2 = new Bridge.CustomLogger("");
manager.addLogger(root2);
expectedRoot = (System.getSecurityManager() == null ? root : root2);
Logger logger7 = manager.getLogger("");
Logger logger7b = manager.getLogger("");
assertNotNull(logger7);
assertNotNull(logger7b);
assertEquals(logger7, expectedRoot);
assertEquals(logger7b, expectedRoot);
}
}
}
public static void testParent(Logger logger) {
Logger l = logger;
while (l.getParent() != null) {
l = l.getParent();
}
assertEquals("", l.getName());
}
public static class TestError extends RuntimeException {
public TestError(String msg) {
super(msg);
}
}
public static void assertNotNull(Object obj) {
if (obj == null) throw new NullPointerException();
}
public static void assertNull(Object obj) {
if (obj != null) throw new TestError("Null expected, got "+obj);
}
public static void assertEquals(Object o1, Object o2) {
if (o1 != o2) {
throw new TestError(o1 + " != " + o2);
}
}
public static void assertNotEquals(Object o1, Object o2) {
if (o1 == o2) {
throw new TestError(o1 + " == " + o2);
}
}
}
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