| /* |
| * 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.jsonrpc.provider; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding; |
| import org.apache.tuscany.sca.host.http.ServletHost; |
| import org.apache.tuscany.sca.interfacedef.Interface; |
| import org.apache.tuscany.sca.interfacedef.InterfaceContract; |
| import org.apache.tuscany.sca.interfacedef.java.JavaInterface; |
| import org.apache.tuscany.sca.invocation.MessageFactory; |
| 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; |
| |
| |
| /** |
| * Implementation of the JSONRPC Binding Provider for Services |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class JSONRPCServiceBindingProvider implements ServiceBindingProvider { |
| private MessageFactory messageFactory; |
| |
| private RuntimeEndpoint endpoint; |
| private RuntimeComponent component; |
| private RuntimeComponentService service; |
| private InterfaceContract serviceContract; |
| private JSONRPCBinding binding; |
| private ServletHost servletHost; |
| private List<String> servletMappings = new ArrayList<String>(); |
| |
| public JSONRPCServiceBindingProvider(RuntimeEndpoint endpoint, |
| MessageFactory messageFactory, |
| ServletHost servletHost) { |
| this.endpoint = endpoint; |
| this.component = (RuntimeComponent)endpoint.getComponent(); |
| this.service = (RuntimeComponentService)endpoint.getService(); |
| this.binding = (JSONRPCBinding) endpoint.getBinding(); |
| this.messageFactory = messageFactory; |
| this.servletHost = servletHost; |
| |
| //clone the service contract to avoid databinding issues |
| try { |
| this.serviceContract = (InterfaceContract)service.getInterfaceContract().clone(); |
| } catch(CloneNotSupportedException e) { |
| this.serviceContract = service.getInterfaceContract(); |
| } |
| |
| JSONRPCDatabindingHelper.setDataBinding(serviceContract.getInterface()); |
| } |
| |
| public InterfaceContract getBindingInterfaceContract() { |
| return serviceContract; |
| } |
| |
| public boolean supportsOneWayInvocation() { |
| return false; |
| } |
| |
| public void start() { |
| // Set default databinding to json |
| // serviceContract.getInterface().resetDataBinding(JSONDataBinding.NAME); |
| |
| // Determine the service business interface |
| Class<?> serviceInterface = getTargetJavaClass(serviceContract.getInterface()); |
| |
| // Create a Java proxy to the target service |
| Object proxy = component.getComponentContext().getServiceReference(serviceInterface, endpoint).getService(); |
| |
| // Create and register a Servlet for this service |
| JSONRPCServiceServlet serviceServlet = |
| new JSONRPCServiceServlet(messageFactory, endpoint, serviceInterface, proxy); |
| String mapping = binding.getURI(); |
| if (!mapping.endsWith("/")) { |
| mapping += "/"; |
| } |
| if (!mapping.endsWith("*")) { |
| mapping += "*"; |
| } |
| |
| servletHost.addServletMapping(mapping, serviceServlet); |
| servletMappings.add(mapping); |
| servletHost.addServletMapping(binding.getURI(), serviceServlet); |
| servletMappings.add(binding.getURI()); |
| } |
| |
| public void stop() { |
| |
| // Remove the Servlet mappings we've added |
| for (String mapping: servletMappings) { |
| servletHost.removeServletMapping(mapping); |
| } |
| |
| } |
| |
| 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(); |
| } |
| } |