| /* |
| * Copyright (c) 2013, 2016, 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.util.*; |
| import java.util.logging.*; |
| import sun.util.logging.PlatformLogger; |
| |
| /* |
| * @test |
| * @bug 8005615 |
| * @summary A LogManager subclass overrides its own implementation of named |
| * logger (see the subclassing information in the Logger class specification) |
| * |
| * @modules java.base/sun.util.logging |
| * java.logging |
| * @compile -XDignore.symbol.file CustomLogManager.java SimpleLogManager.java |
| * @run main/othervm -Djava.util.logging.manager=SimpleLogManager SimpleLogManager |
| */ |
| public class SimpleLogManager extends CustomLogManager { |
| public static void main(String[] args) { |
| String classname = System.getProperty("java.util.logging.manager"); |
| if (!classname.equals("SimpleLogManager")) { |
| throw new RuntimeException("java.util.logging.manager not set"); |
| } |
| |
| Logger logger = Logger.getLogger(SimpleLogManager.class.getName()); |
| Logger.getLogger("org.foo.bar.Foo"); |
| |
| // a platform logger used by the system code is just a Logger instance. |
| PlatformLogger.getLogger("org.openjdk.core.logger"); |
| |
| LogManager mgr = LogManager.getLogManager(); |
| if (mgr != CustomLogManager.INSTANCE || !(mgr instanceof SimpleLogManager)) { |
| throw new RuntimeException(LogManager.getLogManager() + " not SimpleLogManager"); |
| } |
| |
| checkCustomLogger(SimpleLogManager.class.getName(), null); |
| checkCustomLogger("org.foo.bar.Foo", null); |
| checkCustomLogger("org.openjdk.core.logger", "sun.util.logging.resources.logging"); |
| |
| // ## The LogManager.demandLogger method does not handle custom log manager |
| // ## that overrides the getLogger method to return a custom logger |
| // ## (see the test case in 8005640). Logger.getLogger may return |
| // ## a Logger instance but LogManager overrides it with a custom Logger |
| // ## instance like this case. |
| // |
| // However, the specification of LogManager and Logger subclassing is |
| // not clear whether this is supported or not. The following check |
| // just captures the current behavior. |
| if (logger instanceof CustomLogger) { |
| throw new RuntimeException(logger + " not CustomLogger"); |
| } |
| } |
| |
| private static void checkCustomLogger(String name, String resourceBundleName) { |
| CustomLogManager.checkLogger(name, resourceBundleName); |
| Logger logger1 = Logger.getLogger(name); |
| Logger logger2 = LogManager.getLogManager().getLogger(name); |
| if (logger1 != logger2) { |
| throw new RuntimeException(logger1 + " != " + logger2); |
| } |
| if (!(logger1 instanceof CustomLogger)) { |
| throw new RuntimeException(logger1 + " not CustomLogger"); |
| } |
| } |
| |
| /* |
| * This SimpleLogManager overrides the addLogger method to replace |
| * the given logger with a custom logger. |
| * |
| * It's unclear what the recommended way to use custom logger is. |
| * A LogManager subclass might override the getLogger method to return |
| * a custom Logger and create a new custom logger if not exist so that |
| * Logger.getLogger() can return a custom Logger instance but that violates |
| * the LogManager.getLogger() spec which should return null if not found. |
| */ |
| public synchronized boolean addLogger(Logger logger) { |
| String name = logger.getName(); |
| if (namedLoggers.containsKey(name)) { |
| return false; |
| } |
| CustomLogger newLogger = new CustomLogger(logger); |
| return super.addLogger(newLogger); |
| } |
| |
| public class CustomLogger extends Logger { |
| final Logger keepRef; // keep a strong reference to avoid GC. |
| CustomLogger(Logger logger) { |
| super(logger.getName(), logger.getResourceBundleName()); |
| keepRef = logger; |
| } |
| } |
| } |