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<FONT color="green">001</FONT> /*<a name="line.1"></a>
<FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT> *<a name="line.8"></a>
<FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT> *<a name="line.10"></a>
<FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT> * See the license for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT> * limitations under the license.<a name="line.15"></a>
<FONT color="green">016</FONT> */<a name="line.16"></a>
<FONT color="green">017</FONT> package org.slf4j.helpers;<a name="line.17"></a>
<FONT color="green">018</FONT> <a name="line.18"></a>
<FONT color="green">019</FONT> import org.apache.logging.log4j.LogManager;<a name="line.19"></a>
<FONT color="green">020</FONT> import org.apache.logging.log4j.spi.AbstractLogger;<a name="line.20"></a>
<FONT color="green">021</FONT> import org.apache.logging.log4j.spi.LoggerContext;<a name="line.21"></a>
<FONT color="green">022</FONT> import org.apache.logging.slf4j.SLF4JLoggingException;<a name="line.22"></a>
<FONT color="green">023</FONT> import org.slf4j.ILoggerFactory;<a name="line.23"></a>
<FONT color="green">024</FONT> import org.slf4j.Logger;<a name="line.24"></a>
<FONT color="green">025</FONT> import org.slf4j.LoggerFactory;<a name="line.25"></a>
<FONT color="green">026</FONT> import org.slf4j.impl.SLF4JLogger;<a name="line.26"></a>
<FONT color="green">027</FONT> <a name="line.27"></a>
<FONT color="green">028</FONT> import java.util.Map;<a name="line.28"></a>
<FONT color="green">029</FONT> import java.util.WeakHashMap;<a name="line.29"></a>
<FONT color="green">030</FONT> import java.util.concurrent.ConcurrentHashMap;<a name="line.30"></a>
<FONT color="green">031</FONT> import java.util.concurrent.ConcurrentMap;<a name="line.31"></a>
<FONT color="green">032</FONT> <a name="line.32"></a>
<FONT color="green">033</FONT> /**<a name="line.33"></a>
<FONT color="green">034</FONT> *<a name="line.34"></a>
<FONT color="green">035</FONT> */<a name="line.35"></a>
<FONT color="green">036</FONT> public class Log4JLoggerFactory implements ILoggerFactory {<a name="line.36"></a>
<FONT color="green">037</FONT> <a name="line.37"></a>
<FONT color="green">038</FONT> private static final String FQCN = Log4JLoggerFactory.class.getName();<a name="line.38"></a>
<FONT color="green">039</FONT> private static final String PACKAGE = "org.slf4j";<a name="line.39"></a>
<FONT color="green">040</FONT> <a name="line.40"></a>
<FONT color="green">041</FONT> private final Map&lt;LoggerContext, ConcurrentMap&lt;String, Logger&gt;&gt; contextMap =<a name="line.41"></a>
<FONT color="green">042</FONT> new WeakHashMap&lt;LoggerContext, ConcurrentMap&lt;String, Logger&gt;&gt;();<a name="line.42"></a>
<FONT color="green">043</FONT> <a name="line.43"></a>
<FONT color="green">044</FONT> public Logger getLogger(String name) {<a name="line.44"></a>
<FONT color="green">045</FONT> LoggerContext context = getContext();<a name="line.45"></a>
<FONT color="green">046</FONT> ConcurrentMap&lt;String, Logger&gt; loggers = getLoggersMap(context);<a name="line.46"></a>
<FONT color="green">047</FONT> <a name="line.47"></a>
<FONT color="green">048</FONT> if (loggers.containsKey(name)) {<a name="line.48"></a>
<FONT color="green">049</FONT> return loggers.get(name);<a name="line.49"></a>
<FONT color="green">050</FONT> }<a name="line.50"></a>
<FONT color="green">051</FONT> String key = Logger.ROOT_LOGGER_NAME.equals(name) ? LogManager.ROOT_LOGGER_NAME : name;<a name="line.51"></a>
<FONT color="green">052</FONT> org.apache.logging.log4j.Logger logger = context.getLogger(key);<a name="line.52"></a>
<FONT color="green">053</FONT> if (logger instanceof AbstractLogger) {<a name="line.53"></a>
<FONT color="green">054</FONT> loggers.putIfAbsent(name, new SLF4JLogger((AbstractLogger) logger, name));<a name="line.54"></a>
<FONT color="green">055</FONT> return loggers.get(name);<a name="line.55"></a>
<FONT color="green">056</FONT> }<a name="line.56"></a>
<FONT color="green">057</FONT> throw new SLF4JLoggingException("SLF4J Adapter requires base logging system to extend Log4J AbstractLogger");<a name="line.57"></a>
<FONT color="green">058</FONT> }<a name="line.58"></a>
<FONT color="green">059</FONT> <a name="line.59"></a>
<FONT color="green">060</FONT> private ConcurrentMap&lt;String, Logger&gt; getLoggersMap(LoggerContext context) {<a name="line.60"></a>
<FONT color="green">061</FONT> synchronized (contextMap) {<a name="line.61"></a>
<FONT color="green">062</FONT> ConcurrentMap&lt;String, Logger&gt; map = contextMap.get(context);<a name="line.62"></a>
<FONT color="green">063</FONT> if (map == null) {<a name="line.63"></a>
<FONT color="green">064</FONT> map = new ConcurrentHashMap&lt;String, Logger&gt;();<a name="line.64"></a>
<FONT color="green">065</FONT> contextMap.put(context, map);<a name="line.65"></a>
<FONT color="green">066</FONT> }<a name="line.66"></a>
<FONT color="green">067</FONT> return map;<a name="line.67"></a>
<FONT color="green">068</FONT> }<a name="line.68"></a>
<FONT color="green">069</FONT> }<a name="line.69"></a>
<FONT color="green">070</FONT> private LoggerContext getContext() {<a name="line.70"></a>
<FONT color="green">071</FONT> Throwable t = new Throwable();<a name="line.71"></a>
<FONT color="green">072</FONT> boolean next = false;<a name="line.72"></a>
<FONT color="green">073</FONT> boolean pkg = false;<a name="line.73"></a>
<FONT color="green">074</FONT> String fqcn = LoggerFactory.class.getName();<a name="line.74"></a>
<FONT color="green">075</FONT> for (StackTraceElement element : t.getStackTrace()) {<a name="line.75"></a>
<FONT color="green">076</FONT> if (FQCN.equals(element.getClassName())) {<a name="line.76"></a>
<FONT color="green">077</FONT> next = true;<a name="line.77"></a>
<FONT color="green">078</FONT> continue;<a name="line.78"></a>
<FONT color="green">079</FONT> }<a name="line.79"></a>
<FONT color="green">080</FONT> if (next &amp;&amp; element.getClassName().startsWith(PACKAGE)) {<a name="line.80"></a>
<FONT color="green">081</FONT> fqcn = element.getClassName();<a name="line.81"></a>
<FONT color="green">082</FONT> pkg = true;<a name="line.82"></a>
<FONT color="green">083</FONT> continue;<a name="line.83"></a>
<FONT color="green">084</FONT> }<a name="line.84"></a>
<FONT color="green">085</FONT> if (pkg) {<a name="line.85"></a>
<FONT color="green">086</FONT> break;<a name="line.86"></a>
<FONT color="green">087</FONT> }<a name="line.87"></a>
<FONT color="green">088</FONT> }<a name="line.88"></a>
<FONT color="green">089</FONT> return PrivateManager.getContext(fqcn);<a name="line.89"></a>
<FONT color="green">090</FONT> }<a name="line.90"></a>
<FONT color="green">091</FONT> <a name="line.91"></a>
<FONT color="green">092</FONT> /**<a name="line.92"></a>
<FONT color="green">093</FONT> * The real bridge between SLF4J and Log4j.<a name="line.93"></a>
<FONT color="green">094</FONT> */<a name="line.94"></a>
<FONT color="green">095</FONT> private static class PrivateManager extends LogManager {<a name="line.95"></a>
<FONT color="green">096</FONT> private static final String FQCN = LoggerFactory.class.getName();<a name="line.96"></a>
<FONT color="green">097</FONT> <a name="line.97"></a>
<FONT color="green">098</FONT> public static LoggerContext getContext() {<a name="line.98"></a>
<FONT color="green">099</FONT> return getContext(FQCN, false);<a name="line.99"></a>
<FONT color="green">100</FONT> }<a name="line.100"></a>
<FONT color="green">101</FONT> <a name="line.101"></a>
<FONT color="green">102</FONT> public static LoggerContext getContext(String fqcn) {<a name="line.102"></a>
<FONT color="green">103</FONT> return getContext(fqcn, false);<a name="line.103"></a>
<FONT color="green">104</FONT> }<a name="line.104"></a>
<FONT color="green">105</FONT> <a name="line.105"></a>
<FONT color="green">106</FONT> public static org.apache.logging.log4j.Logger getLogger(String name) {<a name="line.106"></a>
<FONT color="green">107</FONT> return getLogger(FQCN, name);<a name="line.107"></a>
<FONT color="green">108</FONT> }<a name="line.108"></a>
<FONT color="green">109</FONT> }<a name="line.109"></a>
<FONT color="green">110</FONT> <a name="line.110"></a>
<FONT color="green">111</FONT> }<a name="line.111"></a>
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