diff options
author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-09-07 23:52:54 +0000 |
---|---|---|
committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-09-07 23:52:54 +0000 |
commit | d123827b572d59f86e23d4e7fac42864d646ee60 (patch) | |
tree | e85a7e9a64391cf9b11830b5b6654dd51185be0d /sandbox/sebastien/java/shell/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java | |
parent | ba5e7230636b321793db90d642b066b423d59c34 (diff) |
Sandbox to experiment with deployment and management commands.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@993560 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sandbox/sebastien/java/shell/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java')
-rw-r--r-- | sandbox/sebastien/java/shell/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/sandbox/sebastien/java/shell/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java b/sandbox/sebastien/java/shell/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java new file mode 100644 index 0000000000..87a7f0910b --- /dev/null +++ b/sandbox/sebastien/java/shell/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java @@ -0,0 +1,206 @@ +/* + * 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.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 InterfaceContractMapper contractMapper; + private MessageFactory messageFactory; + + public JDKProxyFactory(MessageFactory messageFactory, InterfaceContractMapper mapper) { + 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(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(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(); + } +} |