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/*
 * 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.http.provider;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.invocation.MessageFactory;

public class HTTPRRBListenerServlet extends HttpServlet {

    private static final long serialVersionUID = 6688524143716091739L;
    
    transient private Binding binding;
    transient private Invoker bindingInvoker;
    transient private MessageFactory messageFactory;

    /**
     * Constructs a new HTTPServiceListenerServlet.
     */
    public HTTPRRBListenerServlet(Binding binding, Invoker bindingInvoker, MessageFactory messageFactory) {
        this.binding = binding;
        this.bindingInvoker = bindingInvoker;
        this.messageFactory = messageFactory;
    }
    
   public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
       
        // Dispatch the service interaction to the service invoker
        Message requestMessage = messageFactory.createMessage();
        requestMessage.setBody(new Object[]{request, response});
        Message responseMessage = bindingInvoker.invoke(requestMessage);
        if (responseMessage.isFault()) {            
            // Turn a fault into an exception
            //throw new ServletException((Throwable)responseMessage.getBody());
            Throwable e = (Throwable)responseMessage.getBody();
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.toString());
        }
    }
}