| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache license, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the license for the specific language governing permissions and |
| * limitations under the license. |
| */ |
| package org.apache.logging.log4j.core.lookup; |
| |
| import java.util.Map; |
| |
| /** |
| * Work in progress, saved for future experimentation. |
| * |
| * TODO The goal is to use the Sun debugger API to find the main arg values on the stack. |
| */ |
| public class MainInputArgumentsMapLookup extends MapLookup { |
| |
| public static final MainInputArgumentsMapLookup SINGLETON_STACK; |
| |
| static { |
| final Map<Thread, StackTraceElement[]> allStackTraces = Thread.getAllStackTraces(); |
| final String[] args = null; |
| for (final Map.Entry<Thread, StackTraceElement[]> entry : allStackTraces.entrySet()) { |
| final StackTraceElement[] stackTraceElements = entry.getValue(); |
| entry.getKey(); |
| // Can't use the thread name to look for "main" since anyone can set it. |
| // Can't use thread ID since it can be any positive value, and is likely vendor dependent. Oracle seems to |
| // use 1. |
| // We are left to look for "main" at the top of the stack |
| if (stackTraceElements != null) { |
| final int frame0 = stackTraceElements.length - 1; |
| if ("main".equals(stackTraceElements[frame0].getMethodName())) { |
| // We could further validate the main is a public static void method that takes a String[], if not, |
| // look at the other threads. |
| // |
| // How do we get the main args from the stack with the debug API? |
| // Must we be started in debug mode? Seems like it. |
| } |
| } |
| } |
| SINGLETON_STACK = new MainInputArgumentsMapLookup(MapLookup.toMap(args)); |
| } |
| |
| public MainInputArgumentsMapLookup(final Map<String, String> map) { |
| super(map); |
| } |
| } |