| /* |
| * 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.log4j; |
| |
| import java.util.HashMap; |
| import java.util.Hashtable; |
| import java.util.Map; |
| |
| import org.apache.logging.log4j.ThreadContext; |
| |
| /** |
| * This class behaves just like Log4j's MDC would - and so can cause issues with the redeployment of web |
| * applications if the Objects stored in the threads Map cannot be garbage collected. |
| */ |
| public final class MDC { |
| |
| |
| private static final ThreadLocal<Map<String, Object>> localMap = |
| new InheritableThreadLocal<Map<String, Object>>() { |
| @Override |
| protected Map<String, Object> initialValue() { |
| return new HashMap<>(); |
| } |
| |
| @Override |
| protected Map<String, Object> childValue(final Map<String, Object> parentValue) { |
| return parentValue == null ? new HashMap<String, Object>() : new HashMap<>(parentValue); |
| } |
| }; |
| |
| private MDC() { |
| } |
| |
| |
| public static void put(final String key, final String value) { |
| localMap.get().put(key, value); |
| ThreadContext.put(key, value); |
| } |
| |
| |
| public static void put(final String key, final Object value) { |
| localMap.get().put(key, value); |
| ThreadContext.put(key, value.toString()); |
| } |
| |
| public static Object get(final String key) { |
| return localMap.get().get(key); |
| } |
| |
| public static void remove(final String key) { |
| localMap.get().remove(key); |
| ThreadContext.remove(key); |
| } |
| |
| public static void clear() { |
| localMap.get().clear(); |
| ThreadContext.clearMap(); |
| } |
| |
| public static Hashtable<String, Object> getContext() { |
| return new Hashtable<>(localMap.get()); |
| } |
| } |