1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/share/jaxws_classes/javax/xml/ws/spi/FactoryFinder.java Tue Mar 06 16:09:35 2012 -0800 1.3 @@ -0,0 +1,207 @@ 1.4 +/* 1.5 + * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. Oracle designates this 1.11 + * particular file as subject to the "Classpath" exception as provided 1.12 + * by Oracle in the LICENSE file that accompanied this code. 1.13 + * 1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.17 + * version 2 for more details (a copy is included in the LICENSE file that 1.18 + * accompanied this code). 1.19 + * 1.20 + * You should have received a copy of the GNU General Public License version 1.21 + * 2 along with this work; if not, write to the Free Software Foundation, 1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.23 + * 1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.25 + * or visit www.oracle.com if you need additional information or have any 1.26 + * questions. 1.27 + */ 1.28 + 1.29 +package javax.xml.ws.spi; 1.30 + 1.31 +import java.io.InputStream; 1.32 +import java.io.File; 1.33 +import java.io.FileInputStream; 1.34 + 1.35 +import java.util.Properties; 1.36 +import java.io.BufferedReader; 1.37 +import java.io.InputStreamReader; 1.38 +import javax.xml.ws.WebServiceException; 1.39 + 1.40 +class FactoryFinder { 1.41 + 1.42 + /** 1.43 + * Creates an instance of the specified class using the specified 1.44 + * <code>ClassLoader</code> object. 1.45 + * 1.46 + * @exception WebServiceException if the given class could not be found 1.47 + * or could not be instantiated 1.48 + */ 1.49 + private static Object newInstance(String className, 1.50 + ClassLoader classLoader) 1.51 + { 1.52 + try { 1.53 + Class spiClass = safeLoadClass(className, classLoader); 1.54 + return spiClass.newInstance(); 1.55 + } catch (ClassNotFoundException x) { 1.56 + throw new WebServiceException( 1.57 + "Provider " + className + " not found", x); 1.58 + } catch (Exception x) { 1.59 + throw new WebServiceException( 1.60 + "Provider " + className + " could not be instantiated: " + x, 1.61 + x); 1.62 + } 1.63 + } 1.64 + 1.65 + /** 1.66 + * Finds the implementation <code>Class</code> object for the given 1.67 + * factory name, or if that fails, finds the <code>Class</code> object 1.68 + * for the given fallback class name. The arguments supplied MUST be 1.69 + * used in order. If using the first argument is successful, the second 1.70 + * one will not be used. 1.71 + * <P> 1.72 + * This method is package private so that this code can be shared. 1.73 + * 1.74 + * @return the <code>Class</code> object of the specified message factory; 1.75 + * may not be <code>null</code> 1.76 + * 1.77 + * @param factoryId the name of the factory to find, which is 1.78 + * a system property 1.79 + * @param fallbackClassName the implementation class name, which is 1.80 + * to be used only if nothing else 1.81 + * is found; <code>null</code> to indicate that 1.82 + * there is no fallback class name 1.83 + * @exception WebServiceException if there is an error 1.84 + */ 1.85 + static Object find(String factoryId, String fallbackClassName) 1.86 + { 1.87 + if (isOsgi()) { 1.88 + return lookupUsingOSGiServiceLoader(factoryId); 1.89 + } 1.90 + ClassLoader classLoader; 1.91 + try { 1.92 + classLoader = Thread.currentThread().getContextClassLoader(); 1.93 + } catch (Exception x) { 1.94 + throw new WebServiceException(x.toString(), x); 1.95 + } 1.96 + 1.97 + String serviceId = "META-INF/services/" + factoryId; 1.98 + // try to find services in CLASSPATH 1.99 + try { 1.100 + InputStream is=null; 1.101 + if (classLoader == null) { 1.102 + is=ClassLoader.getSystemResourceAsStream(serviceId); 1.103 + } else { 1.104 + is=classLoader.getResourceAsStream(serviceId); 1.105 + } 1.106 + 1.107 + if( is!=null ) { 1.108 + BufferedReader rd = 1.109 + new BufferedReader(new InputStreamReader(is, "UTF-8")); 1.110 + 1.111 + String factoryClassName = rd.readLine(); 1.112 + rd.close(); 1.113 + 1.114 + if (factoryClassName != null && 1.115 + ! "".equals(factoryClassName)) { 1.116 + return newInstance(factoryClassName, classLoader); 1.117 + } 1.118 + } 1.119 + } catch( Exception ex ) { 1.120 + } 1.121 + 1.122 + 1.123 + // try to read from $java.home/lib/jaxws.properties 1.124 + try { 1.125 + String javah=System.getProperty( "java.home" ); 1.126 + String configFile = javah + File.separator + 1.127 + "lib" + File.separator + "jaxws.properties"; 1.128 + File f=new File( configFile ); 1.129 + if( f.exists()) { 1.130 + Properties props=new Properties(); 1.131 + props.load( new FileInputStream(f)); 1.132 + String factoryClassName = props.getProperty(factoryId); 1.133 + return newInstance(factoryClassName, classLoader); 1.134 + } 1.135 + } catch(Exception ex ) { 1.136 + } 1.137 + 1.138 + 1.139 + // Use the system property 1.140 + try { 1.141 + String systemProp = 1.142 + System.getProperty( factoryId ); 1.143 + if( systemProp!=null) { 1.144 + return newInstance(systemProp, classLoader); 1.145 + } 1.146 + } catch (SecurityException se) { 1.147 + } 1.148 + 1.149 + if (fallbackClassName == null) { 1.150 + throw new WebServiceException( 1.151 + "Provider for " + factoryId + " cannot be found", null); 1.152 + } 1.153 + 1.154 + return newInstance(fallbackClassName, classLoader); 1.155 + } 1.156 + 1.157 + 1.158 + /** 1.159 + * Loads the class, provided that the calling thread has an access to the class being loaded. 1.160 + */ 1.161 + private static Class safeLoadClass(String className, ClassLoader classLoader) throws ClassNotFoundException { 1.162 + try { 1.163 + // make sure that the current thread has an access to the package of the given name. 1.164 + SecurityManager s = System.getSecurityManager(); 1.165 + if (s != null) { 1.166 + int i = className.lastIndexOf('.'); 1.167 + if (i != -1) { 1.168 + s.checkPackageAccess(className.substring(0, i)); 1.169 + } 1.170 + } 1.171 + 1.172 + if (classLoader == null) 1.173 + return Class.forName(className); 1.174 + else 1.175 + return classLoader.loadClass(className); 1.176 + } catch (SecurityException se) { 1.177 + // anyone can access the platform default factory class without permission 1.178 + if (Provider.DEFAULT_JAXWSPROVIDER.equals(className)) 1.179 + return Class.forName(className); 1.180 + throw se; 1.181 + } 1.182 + } 1.183 + 1.184 + private static final String OSGI_SERVICE_LOADER_CLASS_NAME = "com.sun.org.glassfish.hk2.osgiresourcelocator.ServiceLoader"; 1.185 + 1.186 + private static boolean isOsgi() { 1.187 + try { 1.188 + Class.forName(OSGI_SERVICE_LOADER_CLASS_NAME); 1.189 + return true; 1.190 + } catch (ClassNotFoundException cnfe) { 1.191 + } 1.192 + return false; 1.193 + } 1.194 + 1.195 + private static Object lookupUsingOSGiServiceLoader(String factoryId) { 1.196 + try { 1.197 + // Use reflection to avoid having any dependendcy on ServiceLoader class 1.198 + Class serviceClass = Class.forName(factoryId); 1.199 + Class[] args = new Class[]{serviceClass}; 1.200 + Class target = Class.forName(OSGI_SERVICE_LOADER_CLASS_NAME); 1.201 + java.lang.reflect.Method m = target.getMethod("lookupProviderInstances", Class.class); 1.202 + java.util.Iterator iter = ((Iterable) m.invoke(null, args)).iterator(); 1.203 + return iter.hasNext() ? iter.next() : null; 1.204 + } catch (Exception e) { 1.205 + // log and continue 1.206 + return null; 1.207 + } 1.208 + } 1.209 + 1.210 +}