| /* |
| * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.xml.ws.spi; |
| |
| import java.io.*; |
| |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Properties; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import javax.xml.ws.WebServiceException; |
| |
| class FactoryFinder { |
| |
| private static final Logger logger = Logger.getLogger("javax.xml.ws"); |
| |
| private static final ServiceLoaderUtil.ExceptionHandler<WebServiceException> EXCEPTION_HANDLER = |
| new ServiceLoaderUtil.ExceptionHandler<WebServiceException>() { |
| @Override |
| public WebServiceException createException(Throwable throwable, String message) { |
| return new WebServiceException(message, throwable); |
| } |
| }; |
| |
| /** |
| * Finds the implementation {@code Class} object for the given |
| * factory name, or if that fails, finds the {@code Class} object |
| * for the given fallback class name. The arguments supplied MUST be |
| * used in order. If using the first argument is successful, the second |
| * one will not be used. |
| * <P> |
| * This method is package private so that this code can be shared. |
| * |
| * @return the {@code Class} object of the specified message factory; |
| * may not be {@code null} |
| * |
| * @param factoryClass the name of the factory to find, which is |
| * a system property |
| * @param fallbackClassName the implementation class name, which is |
| * to be used only if nothing else |
| * is found; {@code null} to indicate that |
| * there is no fallback class name |
| * @exception WebServiceException if there is an error |
| */ |
| @SuppressWarnings("unchecked") |
| static <T> T find(Class<T> factoryClass, String fallbackClassName) { |
| ClassLoader classLoader = ServiceLoaderUtil.contextClassLoader(EXCEPTION_HANDLER); |
| |
| T provider = ServiceLoaderUtil.firstByServiceLoader(factoryClass, logger, EXCEPTION_HANDLER); |
| if (provider != null) return provider; |
| |
| String factoryId = factoryClass.getName(); |
| |
| // try to read from $java.home/lib/jaxws.properties |
| provider = (T) fromJDKProperties(factoryId, fallbackClassName, classLoader); |
| if (provider != null) return provider; |
| |
| // Use the system property |
| provider = (T) fromSystemProperty(factoryId, fallbackClassName, classLoader); |
| if (provider != null) return provider; |
| |
| // handling Glassfish (platform specific default) |
| if (isOsgi()) { |
| return (T) lookupUsingOSGiServiceLoader(factoryId); |
| } |
| |
| if (fallbackClassName == null) { |
| throw new WebServiceException( |
| "Provider for " + factoryId + " cannot be found", null); |
| } |
| |
| return (T) ServiceLoaderUtil.newInstance(fallbackClassName, |
| fallbackClassName, classLoader, EXCEPTION_HANDLER); |
| } |
| |
| private static Object fromSystemProperty(String factoryId, |
| String fallbackClassName, |
| ClassLoader classLoader) { |
| try { |
| String systemProp = System.getProperty(factoryId); |
| if (systemProp != null) { |
| return ServiceLoaderUtil.newInstance(systemProp, |
| fallbackClassName, classLoader, EXCEPTION_HANDLER); |
| } |
| } catch (SecurityException ignored) { |
| } |
| return null; |
| } |
| |
| private static Object fromJDKProperties(String factoryId, |
| String fallbackClassName, |
| ClassLoader classLoader) { |
| Path path = null; |
| try { |
| String JAVA_HOME = System.getProperty("java.home"); |
| path = Paths.get(JAVA_HOME, "conf", "jaxws.properties"); |
| |
| // to ensure backwards compatibility |
| if (!Files.exists(path)) { |
| path = Paths.get(JAVA_HOME, "lib", "jaxws.properties"); |
| } |
| |
| if (Files.exists(path)) { |
| Properties props = new Properties(); |
| try (InputStream inStream = Files.newInputStream(path)) { |
| props.load(inStream); |
| } |
| String factoryClassName = props.getProperty(factoryId); |
| return ServiceLoaderUtil.newInstance(factoryClassName, |
| fallbackClassName, classLoader, EXCEPTION_HANDLER); |
| } |
| } catch (Exception ignored) { |
| logger.log(Level.SEVERE, "Error reading JAX-WS configuration from [" + path + |
| "] file. Check it is accessible and has correct format.", ignored); |
| } return null; |
| } |
| |
| private static final String OSGI_SERVICE_LOADER_CLASS_NAME = "com.sun.org.glassfish.hk2.osgiresourcelocator.ServiceLoader"; |
| |
| private static boolean isOsgi() { |
| try { |
| Class.forName(OSGI_SERVICE_LOADER_CLASS_NAME); |
| return true; |
| } catch (ClassNotFoundException ignored) { |
| } |
| return false; |
| } |
| |
| private static Object lookupUsingOSGiServiceLoader(String factoryId) { |
| try { |
| // Use reflection to avoid having any dependendcy on ServiceLoader class |
| Class serviceClass = Class.forName(factoryId); |
| Class[] args = new Class[]{serviceClass}; |
| Class target = Class.forName(OSGI_SERVICE_LOADER_CLASS_NAME); |
| java.lang.reflect.Method m = target.getMethod("lookupProviderInstances", Class.class); |
| java.util.Iterator iter = ((Iterable) m.invoke(null, (Object[]) args)).iterator(); |
| return iter.hasNext() ? iter.next() : null; |
| } catch (Exception ignored) { |
| // log and continue |
| return null; |
| } |
| } |
| |
| } |