AccessSystemLogger.java

/*
 * Copyright (c) 2015, 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.io.IOException;
import java.lang.System.Logger;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.ResourceBundle;
import java.util.logging.LogManager;

/**
 *
 * @author danielfuchs
 */
public final class AccessSystemLogger {

    public AccessSystemLogger() {
        this(check());
    }

    private AccessSystemLogger(Void unused) {
    }

    private static Void check() {
        if (AccessSystemLogger.class.getClassLoader() != null) {
            throw new RuntimeException("AccessSystemLogger should be loaded by the null classloader");
        }
        return null;
    }

    public Logger getLogger(String name) {
        Logger logger = System.getLogger(name);
        System.out.println("System.getLogger(\"" + name + "\"): " + logger);
        return logger;
    }

    public Logger getLogger(String name, ResourceBundle bundle) {
        Logger logger = System.getLogger(name, bundle);
        System.out.println("System.getLogger(\"" + name + "\", bundle): " + logger);
        return logger;
    }

    public java.util.logging.Logger demandSystemLogger(String name) {
        return java.util.logging.Logger.getLogger(name);
    }

    // copy AccessSystemLogger.class to ./boot
    public static void main(String[] args) throws IOException {
        Path testDir = Paths.get(System.getProperty("user.dir", "."));
        Path bootDir = Paths.get(testDir.toString(), "boot");
        Path classes = Paths.get(System.getProperty("test.classes", "build/classes"));
        Path thisClass = Paths.get(classes.toString(),
                AccessSystemLogger.class.getSimpleName()+".class");
        if (Files.notExists(bootDir)) {
            Files.createDirectory(bootDir);
        }
        Path dest = Paths.get(bootDir.toString(),
                AccessSystemLogger.class.getSimpleName()+".class");
        Files.copy(thisClass, dest, StandardCopyOption.REPLACE_EXISTING);
    }

}