From 132aa8a77685ec92bc90c03f987650d275a7b639 Mon Sep 17 00:00:00 2001 From: lresende Date: Mon, 30 Sep 2013 06:59:11 +0000 Subject: 2.0.1 RC1 release tag git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1527464 13f79535-47bb-0310-9956-ffa450edef68 --- .../binding/rmi/provider/RMIBindingInvoker.java | 144 +++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 sca-java-2.x/tags/2.0.1-RC1/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java') diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java new file mode 100644 index 0000000000..1bbcb49840 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java @@ -0,0 +1,144 @@ +/* + * 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.binding.rmi.provider; + +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.lang.reflect.UndeclaredThrowableException; +import java.rmi.ConnectException; +import java.rmi.Remote; +import java.rmi.UnexpectedException; +import java.security.AccessController; +import java.security.PrivilegedAction; + +import org.apache.tuscany.sca.host.rmi.RMIHost; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; + +/** + * Invoker for RMI References. + * + * @version $Rev$ $Date$ + */ +public class RMIBindingInvoker implements Invoker { + + private RMIHost rmiHost; + private String uri; + private Method remoteMethod; + private Remote proxy; + + public RMIBindingInvoker(RMIHost rmiHost, String uri, Method remoteMethod) { + this.rmiHost = rmiHost; + this.remoteMethod = remoteMethod; + this.uri = uri; + } + + public Message invoke(Message msg) { + try { + + Object[] args = msg.getBody(); + Object resp = invokeTarget(args); + msg.setBody(resp); + + } catch (InvocationTargetException e) { + msg.setFaultBody(e.getCause()); + } catch (Throwable e) { + msg.setFaultBody(e); + } + + return msg; + } + + public Object invokeTarget(final Object payload) throws InvocationTargetException, SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException { + + if (proxy == null) { + initProxy(); + } + + Object invocationResult = null; + InvocationTargetException rethrow = null; + try { + invocationResult = doInvokeTarget(payload); + } catch (InvocationTargetException e) { + // rethrow this exception from finally block unless it can be + // handled + rethrow = e; + // try to diagnose the error condition: proxy may be out-of-date + // (cf. TUSCANY-3850) + Throwable cause = e.getCause(); + if (cause instanceof UndeclaredThrowableException) { + cause = cause.getCause(); + if (cause instanceof UnexpectedException) { + cause = cause.getCause(); + if (cause instanceof ConnectException) { + // retry invoke with a fresh proxy + rethrow = null; + proxy = rmiHost.findService(uri); + invocationResult = doInvokeTarget(payload); + } + } + } + } finally { + if (rethrow != null) { + throw rethrow; + } + } + + return invocationResult; + } + + private synchronized void initProxy() { + if (proxy == null) { + final Class remote = remoteMethod.getDeclaringClass(); + final ClassLoader stubClassLoader = remote.getClassLoader(); + // The generated remote interface is not available for the service + // lookup + final ClassLoader tccl = AccessController.doPrivileged(new PrivilegedAction() { + public ClassLoader run() { + ClassLoader tccl = Thread.currentThread().getContextClassLoader(); + Thread.currentThread().setContextClassLoader(stubClassLoader); + return tccl; + } + }); + try { + // The proxy cannot be cached as the remote services can be rebound + proxy = rmiHost.findService(uri); + } finally { + AccessController.doPrivileged(new PrivilegedAction() { + public ClassLoader run() { + ClassLoader current = Thread.currentThread().getContextClassLoader(); + Thread.currentThread().setContextClassLoader(tccl); + return current; + } + }); + } + } + } + + private Object doInvokeTarget(final Object payload) throws InvocationTargetException, SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException { + + remoteMethod = proxy.getClass().getMethod(remoteMethod.getName(), remoteMethod.getParameterTypes()); + + if (payload != null && !payload.getClass().isArray()) { + return remoteMethod.invoke(proxy, payload); + } else { + return remoteMethod.invoke(proxy, (Object[])payload); + } + } +} -- cgit v1.2.3