| /* |
| * 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.tuscany.sca.core.invocation.impl; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Proxy; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.List; |
| import java.util.concurrent.Future; |
| |
| import javax.xml.ws.AsyncHandler; |
| import javax.xml.ws.Response; |
| |
| import org.apache.tuscany.sca.common.java.collection.LRUCache; |
| import org.apache.tuscany.sca.core.ExtensionPointRegistry; |
| import org.apache.tuscany.sca.core.LifeCycleListener; |
| import org.apache.tuscany.sca.core.context.ServiceReferenceExt; |
| import org.apache.tuscany.sca.core.context.impl.CallbackServiceReferenceImpl; |
| import org.apache.tuscany.sca.core.context.impl.ServiceReferenceImpl; |
| import org.apache.tuscany.sca.core.invocation.ProxyCreationException; |
| import org.apache.tuscany.sca.core.invocation.ProxyFactory; |
| import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper; |
| import org.apache.tuscany.sca.invocation.MessageFactory; |
| import org.apache.tuscany.sca.runtime.Invocable; |
| import org.apache.tuscany.sca.runtime.RuntimeEndpoint; |
| import org.oasisopen.sca.ServiceReference; |
| import org.oasisopen.sca.ServiceRuntimeException; |
| |
| /** |
| * the default implementation of a wire service that uses JDK dynamic proxies |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class JDKProxyFactory implements ProxyFactory, LifeCycleListener { |
| protected ExtensionPointRegistry registry; |
| protected InterfaceContractMapper contractMapper; |
| private MessageFactory messageFactory; |
| |
| public JDKProxyFactory(ExtensionPointRegistry registry, |
| MessageFactory messageFactory, |
| InterfaceContractMapper mapper) { |
| this.registry = registry; |
| this.contractMapper = mapper; |
| this.messageFactory = messageFactory; |
| } |
| |
| /** |
| * The original createProxy method assumes that the proxy doesn't want to |
| * share conversation state so sets the conversation object to null |
| */ |
| public <T> T createProxy(final Class<T> interfaze, Invocable invocable) throws ProxyCreationException { |
| if (invocable instanceof RuntimeEndpoint) { |
| InvocationHandler handler; |
| // TUSCANY-3659 - Always install a asynch handler regardless of whether ref is sync or async |
| // needs tidying |
| // if (isAsync(interfaze)) { |
| handler = new AsyncJDKInvocationHandler(registry, messageFactory, interfaze, invocable); |
| // } else { |
| // handler = new JDKInvocationHandler(messageFactory, interfaze, invocable); |
| // } |
| // Allow privileged access to class loader. Requires RuntimePermission in security policy. |
| ClassLoader cl = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() { |
| public ClassLoader run() { |
| return interfaze.getClassLoader(); |
| } |
| }); |
| T proxy = interfaze.cast(newProxyInstance(cl, new Class[] {interfaze}, handler)); |
| return proxy; |
| } |
| ServiceReference<T> serviceReference = new ServiceReferenceImpl<T>(interfaze, invocable, null); |
| return createProxy(serviceReference); |
| } |
| |
| public <T> T createProxy(ServiceReference<T> callableReference) throws ProxyCreationException { |
| assert callableReference != null; |
| final Class<T> interfaze = callableReference.getBusinessInterface(); |
| InvocationHandler handler; |
| // TUSCANY-3659 - Always install a asynch handler regardless of whether ref is sync or async |
| // needs tidying |
| // if (isAsync(interfaze)) { |
| handler = new AsyncJDKInvocationHandler(registry, messageFactory, callableReference); |
| // } else { |
| // handler = new JDKInvocationHandler(messageFactory, callableReference); |
| // } |
| // Allow privileged access to class loader. Requires RuntimePermission in security policy. |
| ClassLoader cl = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() { |
| public ClassLoader run() { |
| return interfaze.getClassLoader(); |
| } |
| }); |
| T proxy = interfaze.cast(newProxyInstance(cl, new Class[] {interfaze}, handler)); |
| ((ServiceReferenceExt<T>)callableReference).setProxy(proxy); |
| return proxy; |
| } |
| |
| private boolean isAsync(Class<?> interfaze) { |
| for (Method method : interfaze.getMethods()) { |
| if (method.getName().endsWith("Async")) { |
| if (method.getReturnType().isAssignableFrom(Future.class)) { |
| if (method.getParameterTypes().length > 0) { |
| if (method.getParameterTypes()[method.getParameterTypes().length - 1] |
| .isAssignableFrom(AsyncHandler.class)) { |
| return true; |
| } |
| } |
| } |
| if (method.getReturnType().isAssignableFrom(Response.class)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public <T> T createCallbackProxy(Class<T> interfaze, List<? extends Invocable> wires) throws ProxyCreationException { |
| ServiceReferenceImpl<T> callbackReference = null; |
| try { |
| callbackReference = new CallbackServiceReferenceImpl(interfaze, wires); |
| } catch (ServiceRuntimeException e) { |
| // [rfeng] In case that the call is not from a bidirectional interface, the field should be injected with null |
| callbackReference = null; |
| } |
| return callbackReference != null ? createCallbackProxy(callbackReference) : null; |
| } |
| |
| public <T> T createCallbackProxy(ServiceReference<T> callbackReference) throws ProxyCreationException { |
| assert callbackReference != null; |
| Class<T> interfaze = callbackReference.getBusinessInterface(); |
| InvocationHandler handler = new JDKCallbackInvocationHandler(messageFactory, callbackReference); |
| ClassLoader cl = interfaze.getClassLoader(); |
| T proxy = interfaze.cast(newProxyInstance(cl, new Class[] {interfaze}, handler)); |
| ((ServiceReferenceExt<T>)callbackReference).setProxy(proxy); |
| return proxy; |
| } |
| |
| public <B, R extends ServiceReference<B>> R cast(B target) throws IllegalArgumentException { |
| InvocationHandler handler = Proxy.getInvocationHandler(target); |
| if (handler instanceof JDKInvocationHandler) { |
| return (R)((JDKInvocationHandler)handler).getCallableReference(); |
| } else { |
| throw new IllegalArgumentException("The object is not a known proxy."); |
| } |
| } |
| |
| /** |
| * @see org.apache.tuscany.sca.core.invocation.ProxyFactory#isProxyClass(java.lang.Class) |
| */ |
| public boolean isProxyClass(Class<?> clazz) { |
| return Proxy.isProxyClass(clazz); |
| } |
| |
| // This is a cache containing the proxy class constructor for each business interface. |
| // This improves performance compared to calling Proxy.newProxyInstance() |
| // every time that a proxy is needed. |
| private final LRUCache<Class<?>, Constructor<?>> cache = new LRUCache<Class<?>, Constructor<?>>(512); |
| |
| public Object newProxyInstance(ClassLoader classloader, Class<?> interfaces[], InvocationHandler invocationhandler) |
| throws IllegalArgumentException { |
| if (interfaces.length > 1) { |
| // We only cache the proxy constructors with one single interface which the case in SCA where |
| // one reference can have one interface |
| return Proxy.newProxyInstance(classloader, interfaces, invocationhandler); |
| } |
| try { |
| if (invocationhandler == null) |
| throw new NullPointerException("InvocationHandler is null"); |
| // Lookup cached constructor. aclass[0] is the reference's business interface. |
| Constructor<?> proxyCTOR; |
| synchronized (cache) { |
| proxyCTOR = cache.get(interfaces[0]); |
| } |
| if (proxyCTOR == null) { |
| Class<?> proxyClass = Proxy.getProxyClass(classloader, interfaces); |
| proxyCTOR = proxyClass.getConstructor(InvocationHandler.class); |
| synchronized (cache) { |
| cache.put(interfaces[0], proxyCTOR); |
| } |
| } |
| return proxyCTOR.newInstance(invocationhandler); |
| } catch (Throwable e) { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| public void start() { |
| } |
| |
| public void stop() { |
| cache.clear(); |
| } |
| } |