1 /*
   2  * Copyright (c) 2015, 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 import java.security.AccessController;
  25 import java.security.PrivilegedAction;
  26 import java.lang.System.LoggerFinder;
  27 import java.lang.System.Logger;
  28 
  29 public  class BaseLoggerFinder extends LoggerFinder implements TestLoggerFinder {
  30 
  31     static final RuntimePermission LOGGERFINDER_PERMISSION =
  32                 new RuntimePermission("loggerFinder");
  33     @Override
  34     public Logger getLogger(String name, Class<?> caller) {
  35         SecurityManager sm = System.getSecurityManager();
  36         if (sm != null) {
  37             sm.checkPermission(LOGGERFINDER_PERMISSION);
  38         }
  39         PrivilegedAction<ClassLoader> pa = () -> caller.getClassLoader();
  40         ClassLoader callerLoader = AccessController.doPrivileged(pa);
  41         if (callerLoader == null) {
  42             return system.computeIfAbsent(name, (n) -> new LoggerImpl(n));
  43         } else {
  44             return user.computeIfAbsent(name, (n) -> new LoggerImpl(n));
  45         }
  46     }
  47 }