1 files changed, 189 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M3-RC3a/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java b/tags/java/sca/2.0-M3-RC3a/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java
new file mode 100644
index 0000000000..25d43445ec
--- /dev/null
+++ b/tags/java/sca/2.0-M3-RC3a/modules/binding-rmi-runtime/src/main/java/org/apache/tuscany/sca/binding/rmi/provider/RMIServiceBindingProvider.java
@@ -0,0 +1,189 @@
+/*
+ * 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.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(RuntimeComponent rc, RuntimeComponentService rcs, RMIBinding binding, RMIHost rmiHost) {
+        this.component = rc;
+        this.service = rcs;
+        this.binding = binding;
+        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 MixedClassLoader(targetJavaInterface.getClassLoader(), getClass().getClassLoader()));
+        enhancer.setInterfaces(new Class[] {targetJavaInterface});
+        return (Remote)enhancer.create();
+    }
+    
+    private static class MixedClassLoader extends ClassLoader {
+        private ClassLoader runtime;
+
+        public MixedClassLoader(ClassLoader parent, ClassLoader runtime) {
+            super(parent);
+            this.runtime = runtime;
+        }
+
+        @Override
+        protected Class<?> findClass(String name) throws ClassNotFoundException {
+            try {
+                return super.findClass(name);
+            } catch (ClassNotFoundException e) {
+                if (runtime != null && runtime != getParent()) {
+                    return runtime.loadClass(name);
+                } else {
+                    throw e;
+                }
+            }
+        }
+    }
+
+    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;
+    }
+    
+}