001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017package org.apache.logging.log4j.core.async; 018 019import java.net.URI; 020import java.util.ArrayList; 021import java.util.Collections; 022import java.util.List; 023 024import org.apache.logging.log4j.core.LoggerContext; 025import org.apache.logging.log4j.core.selector.ContextSelector; 026 027/** 028 * {@code ContextSelector} that returns the singleton {@code AsyncLoggerContext}. 029 */ 030public class AsyncLoggerContextSelector implements ContextSelector { 031 032 // LOG4J2-666 ensure unique name across separate instances created by webapp classloaders 033 private static final AsyncLoggerContext CONTEXT = new AsyncLoggerContext("AsyncLoggerContext@" 034 + AsyncLoggerContext.class.hashCode()); 035 036 @Override 037 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext) { 038 return CONTEXT; 039 } 040 041 @Override 042 public List<LoggerContext> getLoggerContexts() { 043 final List<LoggerContext> list = new ArrayList<LoggerContext>(); 044 list.add(CONTEXT); 045 return Collections.unmodifiableList(list); 046 } 047 048 @Override 049 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext, 050 final URI configLocation) { 051 return CONTEXT; 052 } 053 054 @Override 055 public void removeContext(final LoggerContext context) { 056 } 057 058}