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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><a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.logging.log4j.core.appender.rolling.action;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.nio.file.FileVisitResult;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.nio.file.Files;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.nio.file.Path;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.nio.file.SimpleFileVisitor;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.nio.file.attribute.BasicFileAttributes;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Objects;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.logging.log4j.Logger;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.logging.log4j.status.StatusLogger;<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> * FileVisitor that deletes files that are accepted by all PathFilters. Directories are ignored.<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> */<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>public class DeletingVisitor extends SimpleFileVisitor<Path> {<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> private static final Logger LOGGER = StatusLogger.getLogger();<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> private final Path basePath;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> private final boolean testMode;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> private final List<? extends PathCondition> pathConditions;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> /**<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * Constructs a new DeletingVisitor.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> *<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * @param basePath used to relativize paths<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * @param pathConditions objects that need to confirm whether a file can be deleted<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * @param testMode if true, files are not deleted but instead a message is printed to the <a<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * href="http://logging.apache.org/log4j/2.x/manual/configuration.html#StatusMessages">status logger</a><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * at INFO level. Users can use this to do a dry run to test if their configuration works as expected.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> */<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> public DeletingVisitor(final Path basePath, final List<? extends PathCondition> pathConditions,<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> final boolean testMode) {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> this.testMode = testMode;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> this.basePath = Objects.requireNonNull(basePath, "basePath");<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> this.pathConditions = Objects.requireNonNull(pathConditions, "pathConditions");<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> for (final PathCondition condition : pathConditions) {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> condition.beforeFileTreeWalk();<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> }<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> @Override<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) throws IOException {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> for (final PathCondition pathFilter : pathConditions) {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> final Path relative = basePath.relativize(file);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> if (!pathFilter.accept(basePath, relative, attrs)) {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> LOGGER.trace("Not deleting base={}, relative={}", basePath, relative);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> return FileVisitResult.CONTINUE;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> }<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> }<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> if (isTestMode()) {<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> LOGGER.info("Deleting {} (TEST MODE: file not actually deleted)", file);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> } else {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> delete(file);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> }<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> return FileVisitResult.CONTINUE;<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> /**<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * Deletes the specified file.<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> *<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * @param file the file to delete<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * @throws IOException if a problem occurred deleting the file<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> */<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> protected void delete(final Path file) throws IOException {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> LOGGER.trace("Deleting {}", file);<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> Files.deleteIfExists(file);<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<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> * Returns {@code true} if files are not deleted even when all conditions accept a path, {@code false} otherwise.<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> *<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * @return {@code true} if files are not deleted even when all conditions accept a path, {@code false} otherwise<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> */<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> public boolean isTestMode() {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> return testMode;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span>}<a name="line.97"></a> |
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