slf4j-timber/src/main/java/org/slf4j/impl/TimberAndroidLoggerFactory.java
/*
* Copyright (c) 2004-2013 QOS.ch
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
package org.slf4j.impl;
import org.slf4j.ILoggerFactory;
import org.slf4j.Logger;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* TimberAndroidLoggerFactory is an implementation of {@link ILoggerFactory} returning
* the appropriately named {@link TimberAndroidLoggerFactory} instance.
*
* @author Patrick Favre-Bulle <patrick.favrebulle@gmail.com>
*/
class TimberAndroidLoggerFactory implements ILoggerFactory {
static final String ANONYMOUS_TAG = "null";
private final ConcurrentMap<String, Logger> loggerMap = new ConcurrentHashMap<>();
/**
* Return an appropriate {@link TimberAndroidLoggerAdapter} instance by name.
*/
public Logger getLogger(String name) {
String tag = name == null ? ANONYMOUS_TAG : name;
Logger logger = loggerMap.get(tag);
if (logger == null) {
Logger newInstance = new TimberAndroidLoggerAdapter(tag);
Logger oldInstance = loggerMap.putIfAbsent(tag, newInstance);
logger = oldInstance == null ? newInstance : oldInstance;
}
return logger;
}
}