001/* 002 * (C) Copyright 2012 Nuxeo SA (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * matic 016 */ 017package org.nuxeo.osgi.util.jar; 018 019import java.io.File; 020import java.io.IOException; 021import java.net.URL; 022import java.net.URLClassLoader; 023import java.util.jar.JarFile; 024 025import org.apache.commons.logging.LogFactory; 026import org.nuxeo.runtime.api.Framework; 027import org.nuxeo.runtime.api.SharedResourceLoader; 028 029/** 030 * Given a location, close the corresponding jar files opened by URL class loaders and in jar file cache 031 * 032 * @since 5.6 033 * @author matic 034 */ 035public class URLJarFileCloser implements JarFileCloser { 036 037 protected final URLClassLoaderCloser applicationCloser; 038 039 protected final URLJarFileIntrospector introspector; 040 041 public URLJarFileCloser(URLJarFileIntrospector anIntrospector, ClassLoader appCL) 042 throws URLJarFileIntrospectionError { 043 introspector = anIntrospector; 044 applicationCloser = appCL instanceof URLClassLoader ? introspector.newURLClassLoaderCloser((URLClassLoader) appCL) 045 : null; 046 } 047 048 @Override 049 public void close(JarFile file) throws IOException { 050 file.close(); 051 URL location = new File(file.getName()).toURI().toURL(); 052 boolean closed = false; 053 try { 054 final SharedResourceLoader loader = Framework.getResourceLoader(); 055 if (loader != null) { 056 closed = introspector.newURLClassLoaderCloser(loader).close(location); 057 } 058 } catch (URLJarFileIntrospectionError cause) { 059 LogFactory.getLog(URLJarFileCloser.class).error("Cannot introspect shared resource loader", cause); 060 061 } 062 if (closed == false) { 063 if (applicationCloser != null) { 064 closed = applicationCloser.close(location); 065 } 066 } 067 introspector.close(location); 068 } 069}