| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package org.apache.geode.internal.admin.remote; |
| |
| import java.io.IOException; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.StringTokenizer; |
| |
| import org.apache.geode.annotations.internal.MakeNotStatic; |
| |
| public class InspectionClasspathManager { |
| @MakeNotStatic |
| private static InspectionClasspathManager internalRef; |
| private Map pathsToLoaders = new HashMap(); |
| private ThreadLocal oldClassLoader = new ThreadLocal(); |
| // private static final String DESER_JAR = "lib" + File.separator + "gemfire_j2ee.jar"; |
| // private static final String DEFAULT_LOADER = ""; |
| |
| public static synchronized InspectionClasspathManager getInstance() { |
| if (internalRef == null) { |
| internalRef = new InspectionClasspathManager(); |
| } |
| return internalRef; |
| } |
| |
| public void jumpToModifiedClassLoader(String modifiedClasspath) { |
| if (modifiedClasspath != null && modifiedClasspath.length() > 0) { |
| // TODO Kirk and Darrel believe this is dead code that is never used |
| ClassLoader current = Thread.currentThread().getContextClassLoader(); |
| oldClassLoader.set(current); |
| synchronized (pathsToLoaders) { |
| ClassLoader newClassLoader = (ClassLoader) pathsToLoaders.get(modifiedClasspath); |
| if (newClassLoader == null) { |
| URL[] urls = convertToURLs(modifiedClasspath); |
| URLClassLoader userClassLoader = new URLClassLoader(urls, current); |
| pathsToLoaders.put(modifiedClasspath, userClassLoader); |
| newClassLoader = userClassLoader; |
| } |
| Thread.currentThread().setContextClassLoader(newClassLoader); |
| } |
| } |
| } |
| |
| public void revertToOldClassLoader() { |
| ClassLoader loader = (ClassLoader) oldClassLoader.get(); |
| if (loader != null) { |
| Thread.currentThread().setContextClassLoader(loader); |
| oldClassLoader.set(null); |
| } |
| } |
| |
| private URL[] convertToURLs(String classpath) { |
| List urls = new ArrayList(); |
| // must accept both separators, not just the current system's separator |
| StringTokenizer tokenizer = new StringTokenizer(classpath, ":;"); |
| while (tokenizer.hasMoreTokens()) { |
| java.io.File f = new java.io.File(tokenizer.nextToken()); |
| try { |
| f = f.getCanonicalFile(); |
| } catch (IOException ex) { |
| continue; // ignore? |
| } |
| try { |
| urls.add(f.toURL()); |
| } catch (MalformedURLException mue) { |
| continue; // ignore? |
| } |
| } |
| URL[] array = new URL[urls.size()]; |
| return (URL[]) urls.toArray(array); |
| } |
| |
| } |