diff options
Diffstat (limited to 'sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider')
5 files changed, 556 insertions, 0 deletions
diff --git a/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java b/sca-java-2.x/branches/2.0/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/branches/2.0/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<ClassLoader>() { + 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<ClassLoader>() { + 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); + } + } +} diff --git a/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingProviderFactory.java b/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingProviderFactory.java new file mode 100644 index 0000000000..3b903cc846 --- /dev/null +++ b/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingProviderFactory.java @@ -0,0 +1,60 @@ +/* + * 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 org.apache.tuscany.sca.binding.rmi.RMIBinding; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.host.rmi.ExtensibleRMIHost; +import org.apache.tuscany.sca.host.rmi.RMIHost; +import org.apache.tuscany.sca.host.rmi.RMIHostExtensionPoint; +import org.apache.tuscany.sca.provider.BindingProviderFactory; +import org.apache.tuscany.sca.provider.ReferenceBindingProvider; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeEndpoint; +import org.apache.tuscany.sca.runtime.RuntimeEndpointReference; + +/** + * RMI Binding Provider Factory + * + * @version $Rev$ $Date$ + */ +public class RMIBindingProviderFactory implements BindingProviderFactory<RMIBinding> { + + private RMIHost rmiHost; + + public RMIBindingProviderFactory(ExtensionPointRegistry extensionPoints) { + RMIHostExtensionPoint rmiHosts = extensionPoints.getExtensionPoint(RMIHostExtensionPoint.class); + this.rmiHost = new ExtensibleRMIHost(rmiHosts); + } + + public ReferenceBindingProvider createReferenceBindingProvider(RuntimeEndpointReference endpointReference) { + + return new RMIReferenceBindingProvider(endpointReference, rmiHost); + } + + public ServiceBindingProvider createServiceBindingProvider(RuntimeEndpoint endpoint) { + return new RMIServiceBindingProvider(endpoint, rmiHost); + } + + public Class<RMIBinding> getModelType() { + return RMIBinding.class; + } + +} diff --git a/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIReferenceBindingProvider.java b/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIReferenceBindingProvider.java new file mode 100644 index 0000000000..52ce74f3d5 --- /dev/null +++ b/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIReferenceBindingProvider.java @@ -0,0 +1,81 @@ +/* + * 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.Method; + +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.binding.rmi.RMIBinding; +import org.apache.tuscany.sca.host.rmi.RMIHost; +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.invocation.Invoker; +import org.apache.tuscany.sca.provider.ReferenceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; + +/** + * Implementation of the RMI Binding Provider for References + * + * @version $Rev$ $Date$ + */ +public class RMIReferenceBindingProvider implements ReferenceBindingProvider { + + private RuntimeComponentReference reference; + private EndpointReference endpointReference; + private RMIBinding binding; + private RMIHost rmiHost; + + public RMIReferenceBindingProvider(EndpointReference endpointReference, + RMIHost rmiHost) { + this.endpointReference = endpointReference; + this.reference = (RuntimeComponentReference)endpointReference.getReference(); + this.binding = (RMIBinding)endpointReference.getBinding(); + this.rmiHost = rmiHost; + } + + public InterfaceContract getBindingInterfaceContract() { + return reference.getInterfaceContract(); + } + + public Invoker createInvoker(Operation operation) { + Class<?> iface = ((JavaInterface)reference.getInterfaceContract().getInterface()).getJavaClass(); + Method remoteMethod; + try { + remoteMethod = JavaInterfaceUtil.findMethod(iface, operation); + } catch (NoSuchMethodException e) { + throw new IllegalArgumentException(e); + } + + return new RMIBindingInvoker(rmiHost, endpointReference.getDeployedURI(), remoteMethod); + } + + public void start() { + } + + public void stop() { + } + + public boolean supportsOneWayInvocation() { + return false; + } + +} diff --git a/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java b/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java new file mode 100644 index 0000000000..e555485085 --- /dev/null +++ b/sca-java-2.x/branches/2.0/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.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.RuntimeEndpoint; +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 RuntimeEndpoint endpoint; + private Remote rmiProxy; + + public RMIServiceBindingProvider(RuntimeEndpoint endpoint, RMIHost rmiHost) { + this.endpoint = endpoint; + this.component = (RuntimeComponent)endpoint.getComponent(); + this.service = (RuntimeComponentService)endpoint.getService(); + this.binding = (RMIBinding)endpoint.getBinding(); + this.rmiHost = rmiHost; + } + + public void start() { + + Interface serviceInterface = service.getInterfaceContract().getInterface(); + + rmiProxy = createRmiService(serviceInterface); + + try { + + String uri = rmiHost.registerService(binding.getURI(), rmiProxy); + // Update the binding with the physical URI + binding.setURI(uri); + endpoint.setDeployedURI(uri); + + } 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 endpoint.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; + } + +} diff --git a/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RemoteInterfaceGenerator.java b/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RemoteInterfaceGenerator.java new file mode 100644 index 0000000000..b351bfacc7 --- /dev/null +++ b/sca-java-2.x/branches/2.0/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RemoteInterfaceGenerator.java @@ -0,0 +1,102 @@ +/* + * 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.Method; +import java.rmi.Remote; +import java.util.Collections; +import java.util.Map; +import java.util.WeakHashMap; + +import net.sf.cglib.core.Constants; + +import org.objectweb.asm.ClassWriter; +import org.objectweb.asm.Type; + +/** + * + */ +public class RemoteInterfaceGenerator { + private final static Map<Class<?>, Class<? extends Remote>> remoteInterfaces = + Collections.synchronizedMap(new WeakHashMap<Class<?>, Class<? extends Remote>>()); + + static class RemoteInterfaceClassLoader extends ClassLoader { + public RemoteInterfaceClassLoader(ClassLoader parent) { + super(parent); + } + + public Class<?> defineClass(String name, byte[] byteArray) { + return defineClass(name, byteArray, 0, byteArray.length); + } + } + + /** + * if the interface of the component whose serviceBindings must be exposed as RMI Service, does not + * implement java.rmi.Remote, then generate such an interface. This method will stop with just + * generating the bytecode. Defining the class from the byte code must be the responsibility of the + * caller of this method, since it requires a ClassLoader to be created to define and load this interface. + */ + private static byte[] generateRemoteInterface(Class<?> serviceInterface) { + String interfazeName = serviceInterface.getName(); + ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); + + cw.visit(Constants.V1_5, Constants.ACC_PUBLIC + Constants.ACC_ABSTRACT + Constants.ACC_INTERFACE, interfazeName + .replace('.', '/'), null, "java/lang/Object", new String[] {"java/rmi/Remote"}); + + StringBuffer argsAndReturn = null; + Method[] methods = serviceInterface.getMethods(); + for (Method method : methods) { + argsAndReturn = new StringBuffer("("); + Class<?>[] paramTypes = method.getParameterTypes(); + Class<?> returnType = method.getReturnType(); + + for (Class<?> paramType : paramTypes) { + argsAndReturn.append(Type.getType(paramType)); + } + argsAndReturn.append(")"); + argsAndReturn.append(Type.getType(returnType)); + + cw.visitMethod(Constants.ACC_PUBLIC + Constants.ACC_ABSTRACT, + method.getName(), + argsAndReturn.toString(), + null, + new String[] {"java/rmi/RemoteException"}); + } + cw.visitEnd(); + return cw.toByteArray(); + } + + public static Class<? extends Remote> generate(Class<?> javaInterface) { + if (!Remote.class.isAssignableFrom(javaInterface)) { + Class<? extends Remote> remote = remoteInterfaces.get(javaInterface); + if (remote == null) { + RemoteInterfaceClassLoader classloader = new RemoteInterfaceClassLoader(javaInterface.getClassLoader()); + final byte[] byteCode = generateRemoteInterface(javaInterface); + javaInterface = classloader.defineClass(javaInterface.getName(), byteCode); + remote = (Class<? extends Remote>)javaInterface; + remoteInterfaces.put(javaInterface, remote); + } + return remote; + } else { + return (Class<? extends Remote>)javaInterface; + } + } + +} |