Create branch for 2.0 beta2 release

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1040693 13f79535-47bb-0310-9956-ffa450edef68

5 files changed, 509 insertions, 0 deletions

diff --git a/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java b/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java
new file mode 100644
index 0000000000..3cbc66f765
--- /dev/null
+++ b/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingInvoker.java
@@ -0,0 +1,100 @@
+/*
+ * 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.rmi.Remote;
+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 {
+        Remote 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;
+                }
+            });
+        }
+
+        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-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIBindingProviderFactory.java b/sca-java-2.x/branches/2.0-Beta2/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-Beta2/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-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIReferenceBindingProvider.java b/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIReferenceBindingProvider.java
new file mode 100644
index 0000000000..8d13b0a24f
--- /dev/null
+++ b/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIReferenceBindingProvider.java
@@ -0,0 +1,79 @@
+/*
+ * 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 RMIBinding binding;
+    private RMIHost rmiHost;
+    
+    public RMIReferenceBindingProvider(EndpointReference endpointReference,
+                                       RMIHost rmiHost) {
+           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, binding.getURI(), remoteMethod);
+    }
+
+    public void start() {
+    }
+
+    public void stop() {
+    }
+
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+
+}
diff --git a/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java b/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java
new file mode 100644
index 0000000000..7e343e4413
--- /dev/null
+++ b/sca-java-2.x/branches/2.0-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java
@@ -0,0 +1,168 @@
+/*
+ * 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);
+
+        } 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-Beta2/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RemoteInterfaceGenerator.java b/sca-java-2.x/branches/2.0-Beta2/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-Beta2/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;
+        }
+    }
+
+}