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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.apache.logging.log4j.core.pattern;<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.core.LogEvent;<a name="line.19"></a> |
| <FONT color="green">020</FONT> import org.apache.logging.log4j.core.config.plugins.Plugin;<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> import java.io.PrintWriter;<a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.io.StringWriter;<a name="line.23"></a> |
| <FONT color="green">024</FONT> <a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> /**<a name="line.26"></a> |
| <FONT color="green">027</FONT> * Outputs the Throwable portion of the LoggingEvent as a full stacktrace<a name="line.27"></a> |
| <FONT color="green">028</FONT> * unless this converter's option is 'short', where it just outputs the first line of the trace, or if<a name="line.28"></a> |
| <FONT color="green">029</FONT> * the number of lines to print is explicitly specified.<a name="line.29"></a> |
| <FONT color="green">030</FONT> */<a name="line.30"></a> |
| <FONT color="green">031</FONT> @Plugin(name = "ThrowablePatternConverter", type = "Converter")<a name="line.31"></a> |
| <FONT color="green">032</FONT> @ConverterKeys({"ex", "throwable", "exception" })<a name="line.32"></a> |
| <FONT color="green">033</FONT> public class ThrowablePatternConverter extends LogEventPatternConverter {<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> * Format the whole stack trace.<a name="line.36"></a> |
| <FONT color="green">037</FONT> */<a name="line.37"></a> |
| <FONT color="green">038</FONT> protected static final String FULL = "full";<a name="line.38"></a> |
| <FONT color="green">039</FONT> /**<a name="line.39"></a> |
| <FONT color="green">040</FONT> * Format only the first line of the throwable.<a name="line.40"></a> |
| <FONT color="green">041</FONT> */<a name="line.41"></a> |
| <FONT color="green">042</FONT> protected static final String SHORT = "short";<a name="line.42"></a> |
| <FONT color="green">043</FONT> /**<a name="line.43"></a> |
| <FONT color="green">044</FONT> * If "short", only first line of throwable report will be formatted.<br><a name="line.44"></a> |
| <FONT color="green">045</FONT> * If "full", the whole stack trace will be formatted.<br><a name="line.45"></a> |
| <FONT color="green">046</FONT> * If "numeric" the output will be limited to the specified number of lines.<a name="line.46"></a> |
| <FONT color="green">047</FONT> */<a name="line.47"></a> |
| <FONT color="green">048</FONT> protected final String option;<a name="line.48"></a> |
| <FONT color="green">049</FONT> <a name="line.49"></a> |
| <FONT color="green">050</FONT> /**<a name="line.50"></a> |
| <FONT color="green">051</FONT> * The number of lines to write.<a name="line.51"></a> |
| <FONT color="green">052</FONT> */<a name="line.52"></a> |
| <FONT color="green">053</FONT> protected final int lines;<a name="line.53"></a> |
| <FONT color="green">054</FONT> <a name="line.54"></a> |
| <FONT color="green">055</FONT> /**<a name="line.55"></a> |
| <FONT color="green">056</FONT> * Constructor.<a name="line.56"></a> |
| <FONT color="green">057</FONT> * @param name Name of converter.<a name="line.57"></a> |
| <FONT color="green">058</FONT> * @param style CSS style for output.<a name="line.58"></a> |
| <FONT color="green">059</FONT> * @param options options, may be null.<a name="line.59"></a> |
| <FONT color="green">060</FONT> */<a name="line.60"></a> |
| <FONT color="green">061</FONT> protected ThrowablePatternConverter(String name, String style, final String[] options) {<a name="line.61"></a> |
| <FONT color="green">062</FONT> super(name, style);<a name="line.62"></a> |
| <FONT color="green">063</FONT> int count = 0;<a name="line.63"></a> |
| <FONT color="green">064</FONT> if ((options != null) && (options.length > 0)) {<a name="line.64"></a> |
| <FONT color="green">065</FONT> option = options[0];<a name="line.65"></a> |
| <FONT color="green">066</FONT> if (option.equalsIgnoreCase(SHORT)) {<a name="line.66"></a> |
| <FONT color="green">067</FONT> count = 2;<a name="line.67"></a> |
| <FONT color="green">068</FONT> } else if (!option.equalsIgnoreCase(FULL)) {<a name="line.68"></a> |
| <FONT color="green">069</FONT> count = Integer.parseInt(option);<a name="line.69"></a> |
| <FONT color="green">070</FONT> }<a name="line.70"></a> |
| <FONT color="green">071</FONT> <a name="line.71"></a> |
| <FONT color="green">072</FONT> } else {<a name="line.72"></a> |
| <FONT color="green">073</FONT> option = null;<a name="line.73"></a> |
| <FONT color="green">074</FONT> }<a name="line.74"></a> |
| <FONT color="green">075</FONT> lines = count;<a name="line.75"></a> |
| <FONT color="green">076</FONT> }<a name="line.76"></a> |
| <FONT color="green">077</FONT> <a name="line.77"></a> |
| <FONT color="green">078</FONT> /**<a name="line.78"></a> |
| <FONT color="green">079</FONT> * Gets an instance of the class.<a name="line.79"></a> |
| <FONT color="green">080</FONT> *<a name="line.80"></a> |
| <FONT color="green">081</FONT> * @param options pattern options, may be null. If first element is "short",<a name="line.81"></a> |
| <FONT color="green">082</FONT> * only the first line of the throwable will be formatted.<a name="line.82"></a> |
| <FONT color="green">083</FONT> * @return instance of class.<a name="line.83"></a> |
| <FONT color="green">084</FONT> */<a name="line.84"></a> |
| <FONT color="green">085</FONT> public static ThrowablePatternConverter newInstance(<a name="line.85"></a> |
| <FONT color="green">086</FONT> final String[] options) {<a name="line.86"></a> |
| <FONT color="green">087</FONT> return new ThrowablePatternConverter("Throwable", "throwable", options);<a name="line.87"></a> |
| <FONT color="green">088</FONT> }<a name="line.88"></a> |
| <FONT color="green">089</FONT> <a name="line.89"></a> |
| <FONT color="green">090</FONT> /**<a name="line.90"></a> |
| <FONT color="green">091</FONT> * {@inheritDoc}<a name="line.91"></a> |
| <FONT color="green">092</FONT> */<a name="line.92"></a> |
| <FONT color="green">093</FONT> public void format(final LogEvent event, final StringBuilder toAppendTo) {<a name="line.93"></a> |
| <FONT color="green">094</FONT> Throwable t = event.getThrown();<a name="line.94"></a> |
| <FONT color="green">095</FONT> <a name="line.95"></a> |
| <FONT color="green">096</FONT> if (t != null) {<a name="line.96"></a> |
| <FONT color="green">097</FONT> StringWriter w = new StringWriter();<a name="line.97"></a> |
| <FONT color="green">098</FONT> t.printStackTrace(new PrintWriter(w));<a name="line.98"></a> |
| <FONT color="green">099</FONT> int len = toAppendTo.length();<a name="line.99"></a> |
| <FONT color="green">100</FONT> if (len > 0 && !Character.isWhitespace(toAppendTo.charAt(len - 1))) {<a name="line.100"></a> |
| <FONT color="green">101</FONT> toAppendTo.append(" ");<a name="line.101"></a> |
| <FONT color="green">102</FONT> }<a name="line.102"></a> |
| <FONT color="green">103</FONT> if (lines > 0) {<a name="line.103"></a> |
| <FONT color="green">104</FONT> StringBuilder sb = new StringBuilder();<a name="line.104"></a> |
| <FONT color="green">105</FONT> String[] array = w.toString().split("\n");<a name="line.105"></a> |
| <FONT color="green">106</FONT> for (int i = 0; i < lines; ++i) {<a name="line.106"></a> |
| <FONT color="green">107</FONT> sb.append(array[i]).append("\n");<a name="line.107"></a> |
| <FONT color="green">108</FONT> }<a name="line.108"></a> |
| <FONT color="green">109</FONT> toAppendTo.append(sb.toString());<a name="line.109"></a> |
| <FONT color="green">110</FONT> <a name="line.110"></a> |
| <FONT color="green">111</FONT> } else {<a name="line.111"></a> |
| <FONT color="green">112</FONT> toAppendTo.append(w.toString());<a name="line.112"></a> |
| <FONT color="green">113</FONT> }<a name="line.113"></a> |
| <FONT color="green">114</FONT> }<a name="line.114"></a> |
| <FONT color="green">115</FONT> }<a name="line.115"></a> |
| <FONT color="green">116</FONT> <a name="line.116"></a> |
| <FONT color="green">117</FONT> /**<a name="line.117"></a> |
| <FONT color="green">118</FONT> * This converter obviously handles throwables.<a name="line.118"></a> |
| <FONT color="green">119</FONT> *<a name="line.119"></a> |
| <FONT color="green">120</FONT> * @return true.<a name="line.120"></a> |
| <FONT color="green">121</FONT> */<a name="line.121"></a> |
| <FONT color="green">122</FONT> public boolean handlesThrowable() {<a name="line.122"></a> |
| <FONT color="green">123</FONT> return true;<a name="line.123"></a> |
| <FONT color="green">124</FONT> }<a name="line.124"></a> |
| <FONT color="green">125</FONT> }<a name="line.125"></a> |
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| </PRE> |
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