1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache license, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the license for the specific language governing permissions and 15 * limitations under the license. 16 */ 17 package org.apache.logging.log4j.core.async; 18 19 import java.net.URI; 20 21 import org.apache.logging.log4j.core.LoggerContext; 22 import org.apache.logging.log4j.core.selector.ClassLoaderContextSelector; 23 import org.apache.logging.log4j.core.util.Constants; 24 import org.apache.logging.log4j.util.PropertiesUtil; 25 26 /** 27 * {@code ContextSelector} that manages {@code AsyncLoggerContext} instances. 28 * <p> 29 * As of version 2.5, this class extends ClassLoaderContextSelector for better web app support. 30 */ 31 public class AsyncLoggerContextSelector extends ClassLoaderContextSelector { 32 33 /** 34 * Returns {@code true} if the user specified this selector as the Log4jContextSelector, to make all loggers 35 * asynchronous. 36 * 37 * @return {@code true} if all loggers are asynchronous, {@code false} otherwise. 38 */ 39 public static boolean isSelected() { 40 return AsyncLoggerContextSelector.class.getName().equals( 41 PropertiesUtil.getProperties().getStringProperty(Constants.LOG4J_CONTEXT_SELECTOR)); 42 } 43 44 @Override 45 protected LoggerContext createContext(final String name, final URI configLocation) { 46 return new AsyncLoggerContext(name, null, configLocation); 47 } 48 49 @Override 50 protected String toContextMapKey(final ClassLoader loader) { 51 // LOG4J2-666 ensure unique name across separate instances created by webapp classloaders 52 return "AsyncContext@" + Integer.toHexString(System.identityHashCode(loader)); 53 } 54 55 @Override 56 protected String defaultContextName() { 57 return "DefaultAsyncContext@" + Thread.currentThread().getName(); 58 } 59 }