| /** |
| * 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.cxf.dosgi.dsw.handlers; |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Proxy; |
| import java.security.AccessController; |
| import java.security.PrivilegedExceptionAction; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.osgi.framework.ServiceException; |
| |
| public class ServiceInvocationHandler implements InvocationHandler { |
| |
| private static final String REMOTE_EXCEPTION_TYPE = "REMOTE"; |
| private static final Collection<Method> OBJECT_METHODS = Arrays.asList(Object.class.getMethods()); |
| |
| private Map<Method, List<Class<?>>> exceptionsMap = new HashMap<Method, List<Class<?>>>(); |
| private Object serviceObject; |
| |
| public ServiceInvocationHandler(Object serviceObject, Class<?> iType) { |
| this.serviceObject = serviceObject; |
| introspectType(iType); |
| } |
| |
| public Object invoke(Object proxy, final Method m, Object[] params) throws Throwable { |
| if (OBJECT_METHODS.contains(m)) { |
| if (m.getName().equals("equals")) { |
| params = new Object[] {Proxy.getInvocationHandler(params[0])}; |
| } |
| return m.invoke(this, params); |
| } |
| |
| ClassLoader oldCl = Thread.currentThread().getContextClassLoader(); |
| try { |
| Thread.currentThread().setContextClassLoader(getClass().getClassLoader()); |
| final Object[] paramsFinal = params; |
| return AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() { |
| public Object run() throws Exception { |
| return m.invoke(serviceObject, paramsFinal); |
| } |
| }); |
| } catch (Throwable ex) { |
| Throwable theCause = ex.getCause() == null ? ex : ex.getCause(); |
| Throwable theCauseCause = theCause.getCause() == null ? theCause : theCause.getCause(); |
| List<Class<?>> excTypes = exceptionsMap.get(m); |
| if (excTypes != null) { |
| for (Class<?> type : excTypes) { |
| if (type.isAssignableFrom(theCause.getClass())) { |
| throw theCause; |
| } |
| if (type.isAssignableFrom(theCauseCause.getClass())) { |
| throw theCauseCause; |
| } |
| } |
| } |
| |
| throw new ServiceException(REMOTE_EXCEPTION_TYPE, theCause); |
| } finally { |
| Thread.currentThread().setContextClassLoader(oldCl); |
| } |
| } |
| |
| private void introspectType(Class<?> iType) { |
| for (Method m : iType.getDeclaredMethods()) { |
| for (Class<?> excType : m.getExceptionTypes()) { |
| if (Exception.class.isAssignableFrom(excType)) { |
| List<Class<?>> types = exceptionsMap.get(m); |
| if (types == null) { |
| types = new ArrayList<Class<?>>(); |
| exceptionsMap.put(m, types); |
| } |
| types.add(excType); |
| } |
| } |
| } |
| } |
| } |