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Diffstat (limited to 'branches/sca-java-2.0-M4/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java')
-rw-r--r-- | branches/sca-java-2.0-M4/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/branches/sca-java-2.0-M4/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java b/branches/sca-java-2.0-M4/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java new file mode 100644 index 0000000000..c572b4e19b --- /dev/null +++ b/branches/sca-java-2.0-M4/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java @@ -0,0 +1,169 @@ +/* + * 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.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.rmi.NoSuchObjectException; +import java.rmi.Remote; +import java.rmi.server.UnicastRemoteObject; +import java.security.AccessController; +import java.security.PrivilegedExceptionAction; + +import net.sf.cglib.proxy.Enhancer; +import net.sf.cglib.proxy.MethodInterceptor; +import net.sf.cglib.proxy.MethodProxy; + +import org.apache.tuscany.sca.assembly.Endpoint; +import org.apache.tuscany.sca.binding.rmi.RMIBinding; +import org.apache.tuscany.sca.common.java.classloader.ClassLoaderDelegate; +import org.apache.tuscany.sca.host.rmi.RMIHost; +import org.apache.tuscany.sca.host.rmi.RMIHostException; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.java.impl.JavaInterfaceUtil; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; +import org.apache.tuscany.sca.runtime.RuntimeWire; +import org.oasisopen.sca.ServiceRuntimeException; + +/** + * Implementation of a Service for the RMIBinding. + * + * @version $Rev$ $Date$ + */ +public class RMIServiceBindingProvider implements ServiceBindingProvider { + + private RuntimeComponent component; + private RuntimeComponentService service; + private RMIBinding binding; + private RMIHost rmiHost; + private RuntimeWire wire; + private Remote rmiProxy; + + public RMIServiceBindingProvider(Endpoint endpoint, RMIHost rmiHost) { + this.component = (RuntimeComponent)endpoint.getComponent(); + this.service = (RuntimeComponentService)endpoint.getService(); + this.binding = (RMIBinding)endpoint.getBinding(); + this.rmiHost = rmiHost; + } + + public void start() { + // URI uri = URI.create(component.getURI() + "/" + binding.getName()); + // binding.setURI(uri.toString()); + + wire = service.getRuntimeWire(binding); + Interface serviceInterface = service.getInterfaceContract().getInterface(); + + rmiProxy = createRmiService(serviceInterface); + + try { + + rmiHost.registerService(binding.getURI(), rmiProxy); + + } catch (RMIHostException e) { + throw new ServiceRuntimeException(e); + } + } + + public void stop() { + rmiHost.unregisterService(binding.getURI()); + try { + UnicastRemoteObject.unexportObject(rmiProxy, false); + } catch (NoSuchObjectException e) { + throw new ServiceRuntimeException(e); + } + } + + private int getPort(String port) { + int portNumber = RMIHost.RMI_DEFAULT_PORT; + if (port != null && port.length() > 0) { + portNumber = Integer.decode(port); + } + return portNumber; + } + + private Remote createRmiService(final Interface serviceInterface) { + Enhancer enhancer = new Enhancer(); + enhancer.setSuperclass(UnicastRemoteObject.class); + enhancer.setCallback(new MethodInterceptor() { + public Object intercept(Object arg0, Method method, Object[] args, MethodProxy arg3) throws Throwable { + try { + return invokeTarget(JavaInterfaceUtil.findOperation(method, serviceInterface.getOperations()), args); + } catch (InvocationTargetException e) { + final Throwable cause = e.getCause(); + for (Class<?> declaredType : method.getExceptionTypes()) { + if (declaredType.isInstance(cause)) { + throw e; + } + } + + if (cause.getCause() != null) { + // TUSCANY-2545: don't inlcude nested cause object + AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() { + public Object run() throws Exception { + Field field = Throwable.class.getDeclaredField("cause"); + field.setAccessible(true); + field.set(cause, null); + field.setAccessible(false); + return null; + } + }); + } + + throw cause; + } + } + }); + Class<?> targetJavaInterface = getTargetJavaClass(serviceInterface); + targetJavaInterface = RemoteInterfaceGenerator.generate(targetJavaInterface); + /* + * In OSGi, the classloader for the interface cannot access the classes for the CGLIB + */ + enhancer.setClassLoader(new ClassLoaderDelegate(targetJavaInterface.getClassLoader(), getClass().getClassLoader())); + enhancer.setInterfaces(new Class[] {targetJavaInterface}); + return (Remote)enhancer.create(); + } + + private Object invokeTarget(Operation op, Object[] args) throws InvocationTargetException { + return wire.invoke(op, args); + } + + private Class<?> getTargetJavaClass(Interface targetInterface) { + // TODO: right now assume that the target is always a Java + // Implementation. Need to figure out + // how to generate Java Interface in cases where the target is not a + // Java Implementation + return ((JavaInterface)targetInterface).getJavaClass(); + } + + public InterfaceContract getBindingInterfaceContract() { + return service.getInterfaceContract(); + } + + public boolean supportsOneWayInvocation() { + return false; + } + +} |