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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.core.util;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.io.File;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.List;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.logging.log4j.core.config.Configuration;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.logging.log4j.core.config.ConfigurationListener;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.logging.log4j.core.config.Reconfigurable;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>/**<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * Watcher for configuration files. Causes a reconfiguration when a file changes.<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> */<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>public abstract class AbstractWatcher implements Watcher {<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span> private final Reconfigurable reconfigurable;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> private final List<ConfigurationListener> configurationListeners;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> private final Log4jThreadFactory threadFactory;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> private final Configuration configuration;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> private Source source;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> public AbstractWatcher(final Configuration configuration, final Reconfigurable reconfigurable,<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> final List<ConfigurationListener> configurationListeners) {<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> this.configuration = configuration;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> this.reconfigurable = reconfigurable;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> this.configurationListeners = configurationListeners;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> this.threadFactory = configurationListeners != null ?<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> Log4jThreadFactory.createDaemonThreadFactory("ConfiguratonFileWatcher") : null;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> }<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> @Override<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> public List<ConfigurationListener> getListeners() {<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> return configurationListeners;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> }<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> @Override<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> public void modified() {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> for (final ConfigurationListener configurationListener : configurationListeners) {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> final Thread thread = threadFactory.newThread(new ReconfigurationRunnable(configurationListener, reconfigurable));<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> thread.start();<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><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> public Configuration getConfiguration() {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> return configuration;<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> public abstract long getLastModified();<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> public abstract boolean isModified();<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> @Override<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> public void watching(Source source) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> this.source = source;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> }<a name="line.70"></a> |
| <span class="sourceLineNo">071</span><a name="line.71"></a> |
| <span class="sourceLineNo">072</span> @Override<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> public Source getSource() {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> return source;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> /**<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * Helper class for triggering a reconfiguration in a background thread.<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> */<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> public static class ReconfigurationRunnable implements Runnable {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private final ConfigurationListener configurationListener;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private final Reconfigurable reconfigurable;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> public ReconfigurationRunnable(final ConfigurationListener configurationListener, final Reconfigurable reconfigurable) {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> this.configurationListener = configurationListener;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> this.reconfigurable = reconfigurable;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> @Override<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public void run() {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> configurationListener.onChange(reconfigurable);<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> }<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> |
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