/*
* 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.async;
import org.apache.logging.log4j.status.StatusLogger;
import org.apache.logging.log4j.util.PropertiesUtil;
/**
* Strategy for deciding whether thread name should be cached or not.
*/
public enum ThreadNameCachingStrategy { // LOG4J2-467
CACHED {
@Override
public String getThreadName() {
String result = THREADLOCAL_NAME.get();
if (result == null) {
result = Thread.currentThread().getName();
THREADLOCAL_NAME.set(result);
}
return result;
}
},
UNCACHED {
@Override
public String getThreadName() {
return Thread.currentThread().getName();
}
};
private static final StatusLogger LOGGER = StatusLogger.getLogger();
private static final ThreadLocal<String> THREADLOCAL_NAME = new ThreadLocal<>();
abstract String getThreadName();
public static ThreadNameCachingStrategy create() {
final String name = PropertiesUtil.getProperties().getStringProperty("AsyncLogger.ThreadNameStrategy",
CACHED.name());
try {
final ThreadNameCachingStrategy result = ThreadNameCachingStrategy.valueOf(name);
LOGGER.debug("AsyncLogger.ThreadNameStrategy={}", result);
return result;
} catch (final Exception ex) {
LOGGER.debug("Using AsyncLogger.ThreadNameStrategy.CACHED: '{}' not valid: {}", name, ex.toString());
return CACHED;
}
}
}