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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> *<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * limitations under the license.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> */<a name="line.16"></a> |
| <span class="sourceLineNo">017</span>package org.apache.log4j.pattern;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import org.apache.logging.log4j.core.LogEvent;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import org.apache.logging.log4j.core.config.plugins.Plugin;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.logging.log4j.core.pattern.ConverterKeys;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.logging.log4j.core.pattern.LogEventPatternConverter;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.logging.log4j.core.pattern.PatternConverter;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.logging.log4j.util.Strings;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span>/**<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * Returns the event's NDC in a StringBuilder.<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> */<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>@Plugin(name = "Log4j1NdcPatternConverter", category = PatternConverter.CATEGORY)<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>@ConverterKeys({ "ndc" })<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>public final class Log4j1NdcPatternConverter extends LogEventPatternConverter {<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> /**<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * Singleton.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> */<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> private static final Log4j1NdcPatternConverter INSTANCE =<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> new Log4j1NdcPatternConverter();<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> /**<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Private constructor.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private Log4j1NdcPatternConverter() {<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> super("Log4j1NDC", "ndc");<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> }<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> /**<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * Obtains an instance of NdcPatternConverter.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> *<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * @param options options, may be null.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * @return instance of NdcPatternConverter.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> */<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> public static Log4j1NdcPatternConverter newInstance(final String[] options) {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> return INSTANCE;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> }<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> @Override<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> public void format(final LogEvent event, final StringBuilder toAppendTo) {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> final List<String> ndc = event.getContextStack().asList();<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> toAppendTo.append(Strings.join(ndc, ' '));<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> }<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>}<a name="line.63"></a> |
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