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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.File;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.FileFilter;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.FileInputStream;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.io.IOException;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.net.URL;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.ArrayList;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.Enumeration;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.HashSet;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.List;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.Set;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.jar.JarEntry;</span> |
| <span class="source-line-no">031</span><span id="line-31">import java.util.jar.JarInputStream;</span> |
| <span class="source-line-no">032</span><span id="line-32">import java.util.regex.Matcher;</span> |
| <span class="source-line-no">033</span><span id="line-33">import java.util.regex.Pattern;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.slf4j.Logger;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">036</span><span id="line-36"></span> |
| <span class="source-line-no">037</span><span id="line-37">/**</span> |
| <span class="source-line-no">038</span><span id="line-38"> * A class that finds a set of classes that are locally accessible (from .class or .jar files), and</span> |
| <span class="source-line-no">039</span><span id="line-39"> * satisfy the conditions that are imposed by name and class filters provided by the user.</span> |
| <span class="source-line-no">040</span><span id="line-40"> */</span> |
| <span class="source-line-no">041</span><span id="line-41">public class ClassFinder {</span> |
| <span class="source-line-no">042</span><span id="line-42"> private static final Logger LOG = LoggerFactory.getLogger(ClassFinder.class);</span> |
| <span class="source-line-no">043</span><span id="line-43"> private static String CLASS_EXT = ".class";</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> private ResourcePathFilter resourcePathFilter;</span> |
| <span class="source-line-no">046</span><span id="line-46"> private FileNameFilter fileNameFilter;</span> |
| <span class="source-line-no">047</span><span id="line-47"> private ClassFilter classFilter;</span> |
| <span class="source-line-no">048</span><span id="line-48"> private FileFilter fileFilter;</span> |
| <span class="source-line-no">049</span><span id="line-49"> private ClassLoader classLoader;</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> public interface ResourcePathFilter {</span> |
| <span class="source-line-no">052</span><span id="line-52"> boolean isCandidatePath(String resourcePath, boolean isJar);</span> |
| <span class="source-line-no">053</span><span id="line-53"> }</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> public interface FileNameFilter {</span> |
| <span class="source-line-no">056</span><span id="line-56"> boolean isCandidateFile(String fileName, String absFilePath);</span> |
| <span class="source-line-no">057</span><span id="line-57"> }</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> public interface ClassFilter {</span> |
| <span class="source-line-no">060</span><span id="line-60"> boolean isCandidateClass(Class<?> c);</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> public static class Not implements ResourcePathFilter, FileNameFilter, ClassFilter {</span> |
| <span class="source-line-no">064</span><span id="line-64"> private ResourcePathFilter resourcePathFilter;</span> |
| <span class="source-line-no">065</span><span id="line-65"> private FileNameFilter fileNameFilter;</span> |
| <span class="source-line-no">066</span><span id="line-66"> private ClassFilter classFilter;</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> public Not(ResourcePathFilter resourcePathFilter) {</span> |
| <span class="source-line-no">069</span><span id="line-69"> this.resourcePathFilter = resourcePathFilter;</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> public Not(FileNameFilter fileNameFilter) {</span> |
| <span class="source-line-no">073</span><span id="line-73"> this.fileNameFilter = fileNameFilter;</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> public Not(ClassFilter classFilter) {</span> |
| <span class="source-line-no">077</span><span id="line-77"> this.classFilter = classFilter;</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> @Override</span> |
| <span class="source-line-no">081</span><span id="line-81"> public boolean isCandidatePath(String resourcePath, boolean isJar) {</span> |
| <span class="source-line-no">082</span><span id="line-82"> return !resourcePathFilter.isCandidatePath(resourcePath, isJar);</span> |
| <span class="source-line-no">083</span><span id="line-83"> }</span> |
| <span class="source-line-no">084</span><span id="line-84"></span> |
| <span class="source-line-no">085</span><span id="line-85"> @Override</span> |
| <span class="source-line-no">086</span><span id="line-86"> public boolean isCandidateFile(String fileName, String absFilePath) {</span> |
| <span class="source-line-no">087</span><span id="line-87"> return !fileNameFilter.isCandidateFile(fileName, absFilePath);</span> |
| <span class="source-line-no">088</span><span id="line-88"> }</span> |
| <span class="source-line-no">089</span><span id="line-89"></span> |
| <span class="source-line-no">090</span><span id="line-90"> @Override</span> |
| <span class="source-line-no">091</span><span id="line-91"> public boolean isCandidateClass(Class<?> c) {</span> |
| <span class="source-line-no">092</span><span id="line-92"> return !classFilter.isCandidateClass(c);</span> |
| <span class="source-line-no">093</span><span id="line-93"> }</span> |
| <span class="source-line-no">094</span><span id="line-94"> }</span> |
| <span class="source-line-no">095</span><span id="line-95"></span> |
| <span class="source-line-no">096</span><span id="line-96"> public static class And implements ClassFilter, ResourcePathFilter {</span> |
| <span class="source-line-no">097</span><span id="line-97"> ClassFilter[] classFilters;</span> |
| <span class="source-line-no">098</span><span id="line-98"> ResourcePathFilter[] resourcePathFilters;</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> public And(ClassFilter... classFilters) {</span> |
| <span class="source-line-no">101</span><span id="line-101"> this.classFilters = classFilters;</span> |
| <span class="source-line-no">102</span><span id="line-102"> }</span> |
| <span class="source-line-no">103</span><span id="line-103"></span> |
| <span class="source-line-no">104</span><span id="line-104"> public And(ResourcePathFilter... resourcePathFilters) {</span> |
| <span class="source-line-no">105</span><span id="line-105"> this.resourcePathFilters = resourcePathFilters;</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> @Override</span> |
| <span class="source-line-no">109</span><span id="line-109"> public boolean isCandidateClass(Class<?> c) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> for (ClassFilter filter : classFilters) {</span> |
| <span class="source-line-no">111</span><span id="line-111"> if (!filter.isCandidateClass(c)) {</span> |
| <span class="source-line-no">112</span><span id="line-112"> return false;</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"> return true;</span> |
| <span class="source-line-no">116</span><span id="line-116"> }</span> |
| <span class="source-line-no">117</span><span id="line-117"></span> |
| <span class="source-line-no">118</span><span id="line-118"> @Override</span> |
| <span class="source-line-no">119</span><span id="line-119"> public boolean isCandidatePath(String resourcePath, boolean isJar) {</span> |
| <span class="source-line-no">120</span><span id="line-120"> for (ResourcePathFilter filter : resourcePathFilters) {</span> |
| <span class="source-line-no">121</span><span id="line-121"> if (!filter.isCandidatePath(resourcePath, isJar)) {</span> |
| <span class="source-line-no">122</span><span id="line-122"> return false;</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"> }</span> |
| <span class="source-line-no">125</span><span id="line-125"> return true;</span> |
| <span class="source-line-no">126</span><span id="line-126"> }</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"></span> |
| <span class="source-line-no">129</span><span id="line-129"> // To control which classloader to use while trying to find jars/classes</span> |
| <span class="source-line-no">130</span><span id="line-130"> public ClassFinder(ClassLoader classLoader) {</span> |
| <span class="source-line-no">131</span><span id="line-131"> this(null, null, null, classLoader);</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"></span> |
| <span class="source-line-no">134</span><span id="line-134"> public ClassFinder(ResourcePathFilter resourcePathFilter, FileNameFilter fileNameFilter,</span> |
| <span class="source-line-no">135</span><span id="line-135"> ClassFilter classFilter) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> this(resourcePathFilter, fileNameFilter, classFilter, ClassLoader.getSystemClassLoader());</span> |
| <span class="source-line-no">137</span><span id="line-137"> }</span> |
| <span class="source-line-no">138</span><span id="line-138"></span> |
| <span class="source-line-no">139</span><span id="line-139"> public ClassFinder(ResourcePathFilter resourcePathFilter, FileNameFilter fileNameFilter,</span> |
| <span class="source-line-no">140</span><span id="line-140"> ClassFilter classFilter, ClassLoader classLoader) {</span> |
| <span class="source-line-no">141</span><span id="line-141"> this.resourcePathFilter = resourcePathFilter;</span> |
| <span class="source-line-no">142</span><span id="line-142"> this.classFilter = classFilter;</span> |
| <span class="source-line-no">143</span><span id="line-143"> this.fileNameFilter = fileNameFilter;</span> |
| <span class="source-line-no">144</span><span id="line-144"> this.fileFilter = new FileFilterWithName(fileNameFilter);</span> |
| <span class="source-line-no">145</span><span id="line-145"> this.classLoader = classLoader;</span> |
| <span class="source-line-no">146</span><span id="line-146"> }</span> |
| <span class="source-line-no">147</span><span id="line-147"></span> |
| <span class="source-line-no">148</span><span id="line-148"> /**</span> |
| <span class="source-line-no">149</span><span id="line-149"> * Finds the classes in current package (of ClassFinder) and nested packages.</span> |
| <span class="source-line-no">150</span><span id="line-150"> * @param proceedOnExceptions whether to ignore exceptions encountered for individual</span> |
| <span class="source-line-no">151</span><span id="line-151"> * jars/files/classes, and proceed looking for others.</span> |
| <span class="source-line-no">152</span><span id="line-152"> */</span> |
| <span class="source-line-no">153</span><span id="line-153"> public Set<Class<?>> findClasses(boolean proceedOnExceptions)</span> |
| <span class="source-line-no">154</span><span id="line-154"> throws ClassNotFoundException, IOException, LinkageError {</span> |
| <span class="source-line-no">155</span><span id="line-155"> return findClasses(this.getClass().getPackage().getName(), proceedOnExceptions);</span> |
| <span class="source-line-no">156</span><span id="line-156"> }</span> |
| <span class="source-line-no">157</span><span id="line-157"></span> |
| <span class="source-line-no">158</span><span id="line-158"> /**</span> |
| <span class="source-line-no">159</span><span id="line-159"> * Finds the classes in a package and nested packages.</span> |
| <span class="source-line-no">160</span><span id="line-160"> * @param packageName package names</span> |
| <span class="source-line-no">161</span><span id="line-161"> * @param proceedOnExceptions whether to ignore exceptions encountered for individual</span> |
| <span class="source-line-no">162</span><span id="line-162"> * jars/files/classes, and proceed looking for others.</span> |
| <span class="source-line-no">163</span><span id="line-163"> */</span> |
| <span class="source-line-no">164</span><span id="line-164"> public Set<Class<?>> findClasses(String packageName, boolean proceedOnExceptions)</span> |
| <span class="source-line-no">165</span><span id="line-165"> throws ClassNotFoundException, IOException, LinkageError {</span> |
| <span class="source-line-no">166</span><span id="line-166"> final String path = packageName.replace('.', '/');</span> |
| <span class="source-line-no">167</span><span id="line-167"> final Pattern jarResourceRe = Pattern.compile("^file:(.+\\.jar)!/" + path + "$");</span> |
| <span class="source-line-no">168</span><span id="line-168"></span> |
| <span class="source-line-no">169</span><span id="line-169"> Enumeration<URL> resources = this.classLoader.getResources(path);</span> |
| <span class="source-line-no">170</span><span id="line-170"> List<File> dirs = new ArrayList<>();</span> |
| <span class="source-line-no">171</span><span id="line-171"> List<String> jars = new ArrayList<>();</span> |
| <span class="source-line-no">172</span><span id="line-172"></span> |
| <span class="source-line-no">173</span><span id="line-173"> while (resources.hasMoreElements()) {</span> |
| <span class="source-line-no">174</span><span id="line-174"> URL resource = resources.nextElement();</span> |
| <span class="source-line-no">175</span><span id="line-175"> String resourcePath = resource.getFile();</span> |
| <span class="source-line-no">176</span><span id="line-176"> Matcher matcher = jarResourceRe.matcher(resourcePath);</span> |
| <span class="source-line-no">177</span><span id="line-177"> boolean isJar = matcher.find();</span> |
| <span class="source-line-no">178</span><span id="line-178"> resourcePath = isJar ? matcher.group(1) : resourcePath;</span> |
| <span class="source-line-no">179</span><span id="line-179"> if (</span> |
| <span class="source-line-no">180</span><span id="line-180"> null == this.resourcePathFilter</span> |
| <span class="source-line-no">181</span><span id="line-181"> || this.resourcePathFilter.isCandidatePath(resourcePath, isJar)</span> |
| <span class="source-line-no">182</span><span id="line-182"> ) {</span> |
| <span class="source-line-no">183</span><span id="line-183"> LOG.debug("Looking in " + resourcePath + "; isJar=" + isJar);</span> |
| <span class="source-line-no">184</span><span id="line-184"> if (isJar) {</span> |
| <span class="source-line-no">185</span><span id="line-185"> jars.add(resourcePath);</span> |
| <span class="source-line-no">186</span><span id="line-186"> } else {</span> |
| <span class="source-line-no">187</span><span id="line-187"> dirs.add(new File(resourcePath));</span> |
| <span class="source-line-no">188</span><span id="line-188"> }</span> |
| <span class="source-line-no">189</span><span id="line-189"> }</span> |
| <span class="source-line-no">190</span><span id="line-190"> }</span> |
| <span class="source-line-no">191</span><span id="line-191"></span> |
| <span class="source-line-no">192</span><span id="line-192"> Set<Class<?>> classes = new HashSet<>();</span> |
| <span class="source-line-no">193</span><span id="line-193"> for (File directory : dirs) {</span> |
| <span class="source-line-no">194</span><span id="line-194"> classes.addAll(findClassesFromFiles(directory, packageName, proceedOnExceptions));</span> |
| <span class="source-line-no">195</span><span id="line-195"> }</span> |
| <span class="source-line-no">196</span><span id="line-196"> for (String jarFileName : jars) {</span> |
| <span class="source-line-no">197</span><span id="line-197"> classes.addAll(findClassesFromJar(jarFileName, packageName, proceedOnExceptions));</span> |
| <span class="source-line-no">198</span><span id="line-198"> }</span> |
| <span class="source-line-no">199</span><span id="line-199"> return classes;</span> |
| <span class="source-line-no">200</span><span id="line-200"> }</span> |
| <span class="source-line-no">201</span><span id="line-201"></span> |
| <span class="source-line-no">202</span><span id="line-202"> private Set<Class<?>> findClassesFromJar(String jarFileName, String packageName,</span> |
| <span class="source-line-no">203</span><span id="line-203"> boolean proceedOnExceptions) throws IOException, ClassNotFoundException, LinkageError {</span> |
| <span class="source-line-no">204</span><span id="line-204"> JarInputStream jarFile;</span> |
| <span class="source-line-no">205</span><span id="line-205"> try {</span> |
| <span class="source-line-no">206</span><span id="line-206"> jarFile = new JarInputStream(new FileInputStream(jarFileName));</span> |
| <span class="source-line-no">207</span><span id="line-207"> } catch (IOException ioEx) {</span> |
| <span class="source-line-no">208</span><span id="line-208"> LOG.warn("Failed to look for classes in " + jarFileName + ": " + ioEx);</span> |
| <span class="source-line-no">209</span><span id="line-209"> throw ioEx;</span> |
| <span class="source-line-no">210</span><span id="line-210"> }</span> |
| <span class="source-line-no">211</span><span id="line-211"></span> |
| <span class="source-line-no">212</span><span id="line-212"> Set<Class<?>> classes = new HashSet<>();</span> |
| <span class="source-line-no">213</span><span id="line-213"> JarEntry entry;</span> |
| <span class="source-line-no">214</span><span id="line-214"> try {</span> |
| <span class="source-line-no">215</span><span id="line-215"> while (true) {</span> |
| <span class="source-line-no">216</span><span id="line-216"> try {</span> |
| <span class="source-line-no">217</span><span id="line-217"> entry = jarFile.getNextJarEntry();</span> |
| <span class="source-line-no">218</span><span id="line-218"> } catch (IOException ioEx) {</span> |
| <span class="source-line-no">219</span><span id="line-219"> if (!proceedOnExceptions) {</span> |
| <span class="source-line-no">220</span><span id="line-220"> throw ioEx;</span> |
| <span class="source-line-no">221</span><span id="line-221"> }</span> |
| <span class="source-line-no">222</span><span id="line-222"> LOG.warn("Failed to get next entry from " + jarFileName + ": " + ioEx);</span> |
| <span class="source-line-no">223</span><span id="line-223"> break;</span> |
| <span class="source-line-no">224</span><span id="line-224"> }</span> |
| <span class="source-line-no">225</span><span id="line-225"> if (entry == null) {</span> |
| <span class="source-line-no">226</span><span id="line-226"> break; // loop termination condition</span> |
| <span class="source-line-no">227</span><span id="line-227"> }</span> |
| <span class="source-line-no">228</span><span id="line-228"></span> |
| <span class="source-line-no">229</span><span id="line-229"> String className = entry.getName();</span> |
| <span class="source-line-no">230</span><span id="line-230"> if (!className.endsWith(CLASS_EXT)) {</span> |
| <span class="source-line-no">231</span><span id="line-231"> continue;</span> |
| <span class="source-line-no">232</span><span id="line-232"> }</span> |
| <span class="source-line-no">233</span><span id="line-233"> int ix = className.lastIndexOf('/');</span> |
| <span class="source-line-no">234</span><span id="line-234"> String fileName = (ix >= 0) ? className.substring(ix + 1) : className;</span> |
| <span class="source-line-no">235</span><span id="line-235"> if (</span> |
| <span class="source-line-no">236</span><span id="line-236"> null != this.fileNameFilter && !this.fileNameFilter.isCandidateFile(fileName, className)</span> |
| <span class="source-line-no">237</span><span id="line-237"> ) {</span> |
| <span class="source-line-no">238</span><span id="line-238"> continue;</span> |
| <span class="source-line-no">239</span><span id="line-239"> }</span> |
| <span class="source-line-no">240</span><span id="line-240"> className =</span> |
| <span class="source-line-no">241</span><span id="line-241"> className.substring(0, className.length() - CLASS_EXT.length()).replace('/', '.');</span> |
| <span class="source-line-no">242</span><span id="line-242"> if (!className.startsWith(packageName)) {</span> |
| <span class="source-line-no">243</span><span id="line-243"> continue;</span> |
| <span class="source-line-no">244</span><span id="line-244"> }</span> |
| <span class="source-line-no">245</span><span id="line-245"> Class<?> c = makeClass(className, proceedOnExceptions);</span> |
| <span class="source-line-no">246</span><span id="line-246"> if (c != null) {</span> |
| <span class="source-line-no">247</span><span id="line-247"> if (!classes.add(c)) {</span> |
| <span class="source-line-no">248</span><span id="line-248"> LOG.warn("Ignoring duplicate class " + className);</span> |
| <span class="source-line-no">249</span><span id="line-249"> }</span> |
| <span class="source-line-no">250</span><span id="line-250"> }</span> |
| <span class="source-line-no">251</span><span id="line-251"> }</span> |
| <span class="source-line-no">252</span><span id="line-252"> return classes;</span> |
| <span class="source-line-no">253</span><span id="line-253"> } finally {</span> |
| <span class="source-line-no">254</span><span id="line-254"> jarFile.close();</span> |
| <span class="source-line-no">255</span><span id="line-255"> }</span> |
| <span class="source-line-no">256</span><span id="line-256"> }</span> |
| <span class="source-line-no">257</span><span id="line-257"></span> |
| <span class="source-line-no">258</span><span id="line-258"> private Set<Class<?>> findClassesFromFiles(File baseDirectory, String packageName,</span> |
| <span class="source-line-no">259</span><span id="line-259"> boolean proceedOnExceptions) throws ClassNotFoundException, LinkageError {</span> |
| <span class="source-line-no">260</span><span id="line-260"> Set<Class<?>> classes = new HashSet<>();</span> |
| <span class="source-line-no">261</span><span id="line-261"> if (!baseDirectory.exists()) {</span> |
| <span class="source-line-no">262</span><span id="line-262"> LOG.warn(baseDirectory.getAbsolutePath() + " does not exist");</span> |
| <span class="source-line-no">263</span><span id="line-263"> return classes;</span> |
| <span class="source-line-no">264</span><span id="line-264"> }</span> |
| <span class="source-line-no">265</span><span id="line-265"></span> |
| <span class="source-line-no">266</span><span id="line-266"> File[] files = baseDirectory.listFiles(this.fileFilter);</span> |
| <span class="source-line-no">267</span><span id="line-267"> if (files == null) {</span> |
| <span class="source-line-no">268</span><span id="line-268"> LOG.warn("Failed to get files from " + baseDirectory.getAbsolutePath());</span> |
| <span class="source-line-no">269</span><span id="line-269"> return classes;</span> |
| <span class="source-line-no">270</span><span id="line-270"> }</span> |
| <span class="source-line-no">271</span><span id="line-271"></span> |
| <span class="source-line-no">272</span><span id="line-272"> for (File file : files) {</span> |
| <span class="source-line-no">273</span><span id="line-273"> final String fileName = file.getName();</span> |
| <span class="source-line-no">274</span><span id="line-274"> if (file.isDirectory()) {</span> |
| <span class="source-line-no">275</span><span id="line-275"> classes</span> |
| <span class="source-line-no">276</span><span id="line-276"> .addAll(findClassesFromFiles(file, packageName + "." + fileName, proceedOnExceptions));</span> |
| <span class="source-line-no">277</span><span id="line-277"> } else {</span> |
| <span class="source-line-no">278</span><span id="line-278"> String className =</span> |
| <span class="source-line-no">279</span><span id="line-279"> packageName + '.' + fileName.substring(0, fileName.length() - CLASS_EXT.length());</span> |
| <span class="source-line-no">280</span><span id="line-280"> Class<?> c = makeClass(className, proceedOnExceptions);</span> |
| <span class="source-line-no">281</span><span id="line-281"> if (c != null) {</span> |
| <span class="source-line-no">282</span><span id="line-282"> if (!classes.add(c)) {</span> |
| <span class="source-line-no">283</span><span id="line-283"> LOG.warn("Ignoring duplicate class " + className);</span> |
| <span class="source-line-no">284</span><span id="line-284"> }</span> |
| <span class="source-line-no">285</span><span id="line-285"> }</span> |
| <span class="source-line-no">286</span><span id="line-286"> }</span> |
| <span class="source-line-no">287</span><span id="line-287"> }</span> |
| <span class="source-line-no">288</span><span id="line-288"> return classes;</span> |
| <span class="source-line-no">289</span><span id="line-289"> }</span> |
| <span class="source-line-no">290</span><span id="line-290"></span> |
| <span class="source-line-no">291</span><span id="line-291"> private Class<?> makeClass(String className, boolean proceedOnExceptions)</span> |
| <span class="source-line-no">292</span><span id="line-292"> throws ClassNotFoundException, LinkageError {</span> |
| <span class="source-line-no">293</span><span id="line-293"> try {</span> |
| <span class="source-line-no">294</span><span id="line-294"> Class<?> c = Class.forName(className, false, classLoader);</span> |
| <span class="source-line-no">295</span><span id="line-295"> boolean isCandidateClass = null == classFilter || classFilter.isCandidateClass(c);</span> |
| <span class="source-line-no">296</span><span id="line-296"> return isCandidateClass ? c : null;</span> |
| <span class="source-line-no">297</span><span id="line-297"> } catch (ClassNotFoundException | LinkageError exception) {</span> |
| <span class="source-line-no">298</span><span id="line-298"> if (!proceedOnExceptions) {</span> |
| <span class="source-line-no">299</span><span id="line-299"> throw exception;</span> |
| <span class="source-line-no">300</span><span id="line-300"> }</span> |
| <span class="source-line-no">301</span><span id="line-301"> LOG.debug("Failed to instantiate or check " + className + ": " + exception);</span> |
| <span class="source-line-no">302</span><span id="line-302"> }</span> |
| <span class="source-line-no">303</span><span id="line-303"> return null;</span> |
| <span class="source-line-no">304</span><span id="line-304"> }</span> |
| <span class="source-line-no">305</span><span id="line-305"></span> |
| <span class="source-line-no">306</span><span id="line-306"> private static class FileFilterWithName implements FileFilter {</span> |
| <span class="source-line-no">307</span><span id="line-307"> private FileNameFilter nameFilter;</span> |
| <span class="source-line-no">308</span><span id="line-308"></span> |
| <span class="source-line-no">309</span><span id="line-309"> public FileFilterWithName(FileNameFilter nameFilter) {</span> |
| <span class="source-line-no">310</span><span id="line-310"> this.nameFilter = nameFilter;</span> |
| <span class="source-line-no">311</span><span id="line-311"> }</span> |
| <span class="source-line-no">312</span><span id="line-312"></span> |
| <span class="source-line-no">313</span><span id="line-313"> @Override</span> |
| <span class="source-line-no">314</span><span id="line-314"> public boolean accept(File file) {</span> |
| <span class="source-line-no">315</span><span id="line-315"> return file.isDirectory() || (file.getName().endsWith(CLASS_EXT) && (null == nameFilter</span> |
| <span class="source-line-no">316</span><span id="line-316"> || nameFilter.isCandidateFile(file.getName(), file.getAbsolutePath())));</span> |
| <span class="source-line-no">317</span><span id="line-317"> }</span> |
| <span class="source-line-no">318</span><span id="line-318"> }</span> |
| <span class="source-line-no">319</span><span id="line-319">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
