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apache / logging-log4j-site / 9755b12b39efbc0142688f9b1a11ec68db89f97b / . / 2.13.0 / log4j-api / apidocs / src-html / org / apache / logging / log4j / internal / DefaultLogBuilder.html
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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.logging.log4j.internal;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.io.Serializable;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import org.apache.logging.log4j.Level;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.apache.logging.log4j.LogBuilder;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.apache.logging.log4j.Logger;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.apache.logging.log4j.Marker;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.logging.log4j.message.Message;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.logging.log4j.message.SimpleMessage;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.logging.log4j.status.StatusLogger;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.logging.log4j.util.LambdaUtil;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.logging.log4j.util.StackLocatorUtil;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.logging.log4j.util.Supplier;<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>/**<a name="line.33"></a>
<span class="sourceLineNo">034</span> * Collects data for a log event and then logs it. This class should be considered private.<a name="line.34"></a>
<span class="sourceLineNo">035</span> */<a name="line.35"></a>
<span class="sourceLineNo">036</span>public class DefaultLogBuilder implements LogBuilder, Serializable {<a name="line.36"></a>
<span class="sourceLineNo">037</span> private static Message EMPTY_MESSAGE = new SimpleMessage("");<a name="line.37"></a>
<span class="sourceLineNo">038</span> private static final String FQCN = DefaultLogBuilder.class.getName();<a name="line.38"></a>
<span class="sourceLineNo">039</span> private static final Logger LOGGER = StatusLogger.getLogger();<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span> private final Logger logger;<a name="line.41"></a>
<span class="sourceLineNo">042</span> private Level level;<a name="line.42"></a>
<span class="sourceLineNo">043</span> private Marker marker;<a name="line.43"></a>
<span class="sourceLineNo">044</span> private Throwable throwable;<a name="line.44"></a>
<span class="sourceLineNo">045</span> private StackTraceElement location;<a name="line.45"></a>
<span class="sourceLineNo">046</span> private volatile boolean inUse;<a name="line.46"></a>
<span class="sourceLineNo">047</span> private long threadId;<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span> public DefaultLogBuilder(Logger logger, Level level) {<a name="line.49"></a>
<span class="sourceLineNo">050</span> this.logger = logger;<a name="line.50"></a>
<span class="sourceLineNo">051</span> this.level = level;<a name="line.51"></a>
<span class="sourceLineNo">052</span> this.threadId = Thread.currentThread().getId();<a name="line.52"></a>
<span class="sourceLineNo">053</span> this.inUse = true;<a name="line.53"></a>
<span class="sourceLineNo">054</span> }<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span> public DefaultLogBuilder(Logger logger) {<a name="line.56"></a>
<span class="sourceLineNo">057</span> this.logger = logger;<a name="line.57"></a>
<span class="sourceLineNo">058</span> this.inUse = false;<a name="line.58"></a>
<span class="sourceLineNo">059</span> this.threadId = Thread.currentThread().getId();<a name="line.59"></a>
<span class="sourceLineNo">060</span> }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span> /**<a name="line.62"></a>
<span class="sourceLineNo">063</span> * This method should be considered internal. It is used to reset the LogBuilder for a new log message.<a name="line.63"></a>
<span class="sourceLineNo">064</span> * @param level The logging level for this event.<a name="line.64"></a>
<span class="sourceLineNo">065</span> * @return This LogBuilder instance.<a name="line.65"></a>
<span class="sourceLineNo">066</span> */<a name="line.66"></a>
<span class="sourceLineNo">067</span> public LogBuilder reset(Level level) {<a name="line.67"></a>
<span class="sourceLineNo">068</span> this.inUse = true;<a name="line.68"></a>
<span class="sourceLineNo">069</span> this.level = level;<a name="line.69"></a>
<span class="sourceLineNo">070</span> this.marker = null;<a name="line.70"></a>
<span class="sourceLineNo">071</span> this.throwable = null;<a name="line.71"></a>
<span class="sourceLineNo">072</span> this.location = null;<a name="line.72"></a>
<span class="sourceLineNo">073</span> return this;<a name="line.73"></a>
<span class="sourceLineNo">074</span> }<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> public LogBuilder withMarker(Marker marker) {<a name="line.76"></a>
<span class="sourceLineNo">077</span> this.marker = marker;<a name="line.77"></a>
<span class="sourceLineNo">078</span> return this;<a name="line.78"></a>
<span class="sourceLineNo">079</span> }<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span> public LogBuilder withThrowable(Throwable throwable) {<a name="line.81"></a>
<span class="sourceLineNo">082</span> this.throwable = throwable;<a name="line.82"></a>
<span class="sourceLineNo">083</span> return this;<a name="line.83"></a>
<span class="sourceLineNo">084</span> }<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span> public LogBuilder withLocation() {<a name="line.86"></a>
<span class="sourceLineNo">087</span> location = StackLocatorUtil.getStackTraceElement(2);<a name="line.87"></a>
<span class="sourceLineNo">088</span> return this;<a name="line.88"></a>
<span class="sourceLineNo">089</span> }<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span> public LogBuilder withLocation(StackTraceElement location) {<a name="line.91"></a>
<span class="sourceLineNo">092</span> this.location = location;<a name="line.92"></a>
<span class="sourceLineNo">093</span> return this;<a name="line.93"></a>
<span class="sourceLineNo">094</span> }<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span> public boolean isInUse() {<a name="line.96"></a>
<span class="sourceLineNo">097</span> return inUse;<a name="line.97"></a>
<span class="sourceLineNo">098</span> }<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span> @Override<a name="line.100"></a>
<span class="sourceLineNo">101</span> public void log(Message message) {<a name="line.101"></a>
<span class="sourceLineNo">102</span> if (isValid()) {<a name="line.102"></a>
<span class="sourceLineNo">103</span> logMessage(message);<a name="line.103"></a>
<span class="sourceLineNo">104</span> }<a name="line.104"></a>
<span class="sourceLineNo">105</span> }<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span> @Override<a name="line.107"></a>
<span class="sourceLineNo">108</span> public void log(CharSequence message) {<a name="line.108"></a>
<span class="sourceLineNo">109</span> if (isValid()) {<a name="line.109"></a>
<span class="sourceLineNo">110</span> logMessage(logger.getMessageFactory().newMessage(message));<a name="line.110"></a>
<span class="sourceLineNo">111</span> }<a name="line.111"></a>
<span class="sourceLineNo">112</span> }<a name="line.112"></a>
<span class="sourceLineNo">113</span><a name="line.113"></a>
<span class="sourceLineNo">114</span> @Override<a name="line.114"></a>
<span class="sourceLineNo">115</span> public void log(String message) {<a name="line.115"></a>
<span class="sourceLineNo">116</span> if (isValid()) {<a name="line.116"></a>
<span class="sourceLineNo">117</span> logMessage(logger.getMessageFactory().newMessage(message));<a name="line.117"></a>
<span class="sourceLineNo">118</span> }<a name="line.118"></a>
<span class="sourceLineNo">119</span> }<a name="line.119"></a>
<span class="sourceLineNo">120</span><a name="line.120"></a>
<span class="sourceLineNo">121</span> @Override<a name="line.121"></a>
<span class="sourceLineNo">122</span> public void log(String message, Object... params) {<a name="line.122"></a>
<span class="sourceLineNo">123</span> if (isValid()) {<a name="line.123"></a>
<span class="sourceLineNo">124</span> logMessage(logger.getMessageFactory().newMessage(message, params));<a name="line.124"></a>
<span class="sourceLineNo">125</span> }<a name="line.125"></a>
<span class="sourceLineNo">126</span> }<a name="line.126"></a>
<span class="sourceLineNo">127</span><a name="line.127"></a>
<span class="sourceLineNo">128</span> @Override<a name="line.128"></a>
<span class="sourceLineNo">129</span> public void log(String message, Supplier&lt;?&gt;... params) {<a name="line.129"></a>
<span class="sourceLineNo">130</span> if (isValid()) {<a name="line.130"></a>
<span class="sourceLineNo">131</span> logMessage(logger.getMessageFactory().newMessage(message, LambdaUtil.getAll(params)));<a name="line.131"></a>
<span class="sourceLineNo">132</span> }<a name="line.132"></a>
<span class="sourceLineNo">133</span> }<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span> @Override<a name="line.135"></a>
<span class="sourceLineNo">136</span> public void log(Supplier&lt;Message&gt; messageSupplier) {<a name="line.136"></a>
<span class="sourceLineNo">137</span> if (isValid()) {<a name="line.137"></a>
<span class="sourceLineNo">138</span> logMessage(messageSupplier.get());<a name="line.138"></a>
<span class="sourceLineNo">139</span> }<a name="line.139"></a>
<span class="sourceLineNo">140</span> }<a name="line.140"></a>
<span class="sourceLineNo">141</span><a name="line.141"></a>
<span class="sourceLineNo">142</span> @Override<a name="line.142"></a>
<span class="sourceLineNo">143</span> public void log(Object message) {<a name="line.143"></a>
<span class="sourceLineNo">144</span> if (isValid()) {<a name="line.144"></a>
<span class="sourceLineNo">145</span> logMessage(logger.getMessageFactory().newMessage(message));<a name="line.145"></a>
<span class="sourceLineNo">146</span> }<a name="line.146"></a>
<span class="sourceLineNo">147</span> }<a name="line.147"></a>
<span class="sourceLineNo">148</span><a name="line.148"></a>
<span class="sourceLineNo">149</span> private void logMessage(Message message) {<a name="line.149"></a>
<span class="sourceLineNo">150</span> try {<a name="line.150"></a>
<span class="sourceLineNo">151</span> logger.logMessage(level, marker, FQCN, location, message, throwable);<a name="line.151"></a>
<span class="sourceLineNo">152</span> } finally {<a name="line.152"></a>
<span class="sourceLineNo">153</span> inUse = false;<a name="line.153"></a>
<span class="sourceLineNo">154</span> }<a name="line.154"></a>
<span class="sourceLineNo">155</span> }<a name="line.155"></a>
<span class="sourceLineNo">156</span><a name="line.156"></a>
<span class="sourceLineNo">157</span> private boolean isValid() {<a name="line.157"></a>
<span class="sourceLineNo">158</span> if (!inUse) {<a name="line.158"></a>
<span class="sourceLineNo">159</span> LOGGER.warn("Attempt to reuse LogBuilder was ignored. {}",<a name="line.159"></a>
<span class="sourceLineNo">160</span> StackLocatorUtil.getCallerClass(2));<a name="line.160"></a>
<span class="sourceLineNo">161</span> return false ;<a name="line.161"></a>
<span class="sourceLineNo">162</span> }<a name="line.162"></a>
<span class="sourceLineNo">163</span> if (this.threadId != Thread.currentThread().getId()) {<a name="line.163"></a>
<span class="sourceLineNo">164</span> LOGGER.warn("LogBuilder can only be used on the owning thread. {}",<a name="line.164"></a>
<span class="sourceLineNo">165</span> StackLocatorUtil.getCallerClass(2));<a name="line.165"></a>
<span class="sourceLineNo">166</span> return false;<a name="line.166"></a>
<span class="sourceLineNo">167</span> }<a name="line.167"></a>
<span class="sourceLineNo">168</span> return true;<a name="line.168"></a>
<span class="sourceLineNo">169</span> }<a name="line.169"></a>
<span class="sourceLineNo">170</span>}<a name="line.170"></a>
</pre>
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