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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package org.glassfish.webservices;

import javax.servlet.*;
import javax.servlet.http.*;

import com.sun.xml.rpc.spi.JaxRpcObjectFactory;
import com.sun.xml.rpc.spi.runtime.ServletDelegate;
import com.sun.xml.rpc.spi.runtime.ServletSecondDelegate;
import org.glassfish.webservices.monitoring.*;
import org.apache.catalina.Loader;


/**
 * The JAX-RPC dispatcher servlet.
 *
 */
public class JAXRPCServlet extends HttpServlet {

    private volatile ServletDelegate delegate_;
    private volatile ServletWebServiceDelegate myDelegate_=null;

    public void init(ServletConfig servletConfig) throws ServletException {
        try {
            super.init(servletConfig);
            JaxRpcObjectFactory rpcFactory = JaxRpcObjectFactory.newInstance();
            delegate_ =
                    (ServletDelegate) rpcFactory.createServletDelegate();
            myDelegate_ = new ServletWebServiceDelegate(delegate_);
            delegate_.setSecondDelegate(myDelegate_);
            delegate_.init(servletConfig);
        } catch (ServletException e) {
            throw e;
        } catch (Throwable e) {
            throw new ServletException(e);
        }
    }

    public void destroy() {
        if (delegate_ != null) {
            delegate_.destroy();
        }
        if (myDelegate_ != null) {
            myDelegate_.destroy();
        }
    }

    protected void doPost(HttpServletRequest request,
                          HttpServletResponse response)
        throws ServletException {
        
        WebServiceEngineImpl wsEngine_ = WebServiceEngineImpl.getInstance();

        if ("Tester".equalsIgnoreCase(request.getQueryString())) {
            Endpoint endpt = wsEngine_.getEndpoint(request.getServletPath());
            if (endpt!=null && Boolean.parseBoolean(endpt.getDescriptor().getDebugging())) {
                WebServiceTesterServlet.invoke(request, response,
                        endpt.getDescriptor());
                return;
            }
        }
                
        if (delegate_ != null) {
            // check if we need to trace this...
            String messageId=null;
            if (wsEngine_.getGlobalMessageListener()!=null) {
                Endpoint endpt = wsEngine_.getEndpoint(request.getServletPath());
                messageId = wsEngine_.preProcessRequest(endpt);
                if (messageId!=null) {
                    ThreadLocalInfo config = new ThreadLocalInfo(messageId, request);
                    wsEngine_.getThreadLocal().set(config);
                }
            }

            delegate_.doPost(request, response);

            if (messageId!=null) {
                HttpResponseInfoImpl info = new HttpResponseInfoImpl(response);
                wsEngine_.postProcessResponse(messageId, info);
            }
        }
    }

    protected void doGet(HttpServletRequest request, 
                         HttpServletResponse response)
        throws ServletException {
        
        // test for tester servlet invocation.
        if ("Tester".equalsIgnoreCase(request.getQueryString())) {

            Endpoint endpt = WebServiceEngineImpl.getInstance().getEndpoint(request.getServletPath());
            if (endpt!=null && Boolean.parseBoolean(endpt.getDescriptor().getDebugging())) {
                Loader loader = (Loader) endpt.getDescriptor().getBundleDescriptor().getExtraAttribute("WEBLOADER");
                if (loader != null) {
                    endpt.getDescriptor().getBundleDescriptor().setClassLoader(loader.getClassLoader());
                    endpt.getDescriptor().getBundleDescriptor().removeExtraAttribute("WEBLOADER");
                }
                WebServiceTesterServlet.invoke(request, response,
                        endpt.getDescriptor());
                return;
            }
        }
        if (delegate_ != null) {
            delegate_.doGet(request, response);
        }
    }
}