| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.util.log; |
| |
| |
| /* ------------------------------------------------------------ */ |
| /** Abstract Logger. |
| * Manages the atomic registration of the logger by name. |
| */ |
| public abstract class AbstractLogger implements Logger |
| { |
| public final Logger getLogger(String name) |
| { |
| if (isBlank(name)) |
| return this; |
| |
| final String basename = getName(); |
| final String fullname = (isBlank(basename) || Log.getRootLogger()==this)?name:(basename + "." + name); |
| |
| Logger logger = Log.getLoggers().get(fullname); |
| if (logger == null) |
| { |
| Logger newlog = newLogger(fullname); |
| |
| logger = Log.getMutableLoggers().putIfAbsent(fullname,newlog); |
| if (logger == null) |
| logger=newlog; |
| } |
| |
| return logger; |
| } |
| |
| |
| protected abstract Logger newLogger(String fullname); |
| |
| /** |
| * A more robust form of name blank test. Will return true for null names, and names that have only whitespace |
| * |
| * @param name |
| * the name to test |
| * @return true for null or blank name, false if any non-whitespace character is found. |
| */ |
| private static boolean isBlank(String name) |
| { |
| if (name == null) |
| { |
| return true; |
| } |
| int size = name.length(); |
| char c; |
| for (int i = 0; i < size; i++) |
| { |
| c = name.charAt(i); |
| if (!Character.isWhitespace(c)) |
| { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |