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Glassfish example source code file (ACCClassLoader.java)
The Glassfish ACCClassLoader.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package org.glassfish.appclient.client.acc; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.lang.instrument.ClassFileTransformer; import java.lang.instrument.IllegalClassFormatException; import java.lang.reflect.Field; import java.net.URI; import java.net.URISyntaxException; import java.net.URL; import java.net.URLClassLoader; import java.security.ProtectionDomain; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.ListIterator; import java.util.logging.Level; import java.util.logging.Logger; /** * * @author tjquinn */ public class ACCClassLoader extends URLClassLoader { private static final String AGENT_LOADER_CLASS_NAME = "org.glassfish.appclient.client.acc.agent.ACCAgentClassLoader"; private static ACCClassLoader instance = null; private ACCClassLoader shadow = null; private boolean shouldTransform = false; private final List<ClassFileTransformer> transformers = Collections.synchronizedList( new ArrayList<ClassFileTransformer>()); public static synchronized ACCClassLoader newInstance(ClassLoader parent, final boolean shouldTransform) { if (instance != null) { throw new IllegalStateException("already set"); } final ClassLoader currentCL = Thread.currentThread().getContextClassLoader(); ClassLoader parentForACCCL = currentCL; final boolean currentCLWasAgentCL = currentCL.getClass().getName().equals( AGENT_LOADER_CLASS_NAME); if (currentCLWasAgentCL) { parentForACCCL = currentCL.getParent(); } instance = new ACCClassLoader(userClassPath(), parentForACCCL, shouldTransform); if (currentCLWasAgentCL) { try { adjustACCAgentClassLoaderParent(instance); } catch (Exception ex) { throw new RuntimeException(ex); } } return instance; } public static ACCClassLoader instance() { return instance; } private static void adjustACCAgentClassLoaderParent(final ACCClassLoader instance) throws NoSuchFieldException, IllegalArgumentException, IllegalAccessException { final ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader(); if (systemClassLoader.getClass().getName().equals(AGENT_LOADER_CLASS_NAME)) { final Field jwsLoaderParentField = ClassLoader.class.getDeclaredField("parent"); jwsLoaderParentField.setAccessible(true); jwsLoaderParentField.set(systemClassLoader, instance); System.setProperty("org.glassfish.appclient.acc.agentLoaderDone", "true"); } } private static URL[] userClassPath() { final URI GFSystemURI = GFSystemURI(); final List<URL> result = classPathToURLs(System.getProperty("java.class.path")); for (ListIterator<URL> it = result.listIterator(); it.hasNext();) { final URL url = it.next(); try { if (url.toURI().equals(GFSystemURI)) { it.remove(); } } catch (URISyntaxException ex) { throw new RuntimeException(ex); } } result.addAll(classPathToURLs(System.getenv("APPCPATH"))); return result.toArray(new URL[result.size()]); } private static URI GFSystemURI() { try { Class agentClass = Class.forName("org.glassfish.appclient.client.acc.agent.AppClientContainerAgent"); return agentClass.getProtectionDomain().getCodeSource().getLocation().toURI().normalize(); } catch (Exception ex) { throw new RuntimeException(ex); } } private static List<URL> classPathToURLs(final String classPath) { if (classPath == null) { return Collections.EMPTY_LIST; } final List<URL> result = new ArrayList Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish ACCClassLoader.java source code file: |
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