QED Administrator Console

com/quadcap/app/qed/XmlDumpServlet.java

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package com.quadcap.app.qed;

/* Copyright 1999 - 2003 Quadcap Software.  All rights reserved.
 *
 * This software is distributed under the Quadcap Free Software License.
 * This software may be used or modified for any purpose, personal or
 * commercial.  Open Source redistributions are permitted.  Commercial
 * redistribution of larger works derived from, or works which bundle
 * this software requires a "Commercial Redistribution License"; see
 * http://www.quadcap.com/purchase.
 *
 * Redistributions qualify as "Open Source" under  one of the following terms:
 *   
 *    Redistributions are made at no charge beyond the reasonable cost of
 *    materials and delivery.
 *
 *    Redistributions are accompanied by a copy of the Source Code or by an
 *    irrevocable offer to provide a copy of the Source Code for up to three
 *    years at the cost of materials and delivery.  Such redistributions
 *    must allow further use, modification, and redistribution of the Source
 *    Code under substantially the same terms as this license.
 *
 * Redistributions of source code must retain the copyright notices as they
 * appear in each source code file, these license terms, and the
 * disclaimer/limitation of liability set forth as paragraph 6 below.
 *
 * Redistributions in binary form must reproduce this Copyright Notice,
 * these license terms, and the disclaimer/limitation of liability set
 * forth as paragraph 6 below, in the documentation and/or other materials
 * provided with the distribution.
 *
 * The Software is provided on an "AS IS" basis.  No warranty is
 * provided that the Software is free of defects, or fit for a
 * particular purpose.  
 *
 * Limitation of Liability. Quadcap Software shall not be liable
 * for any damages suffered by the Licensee or any third party resulting
 * from use of the Software.
 */

import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

import java.util.zip.GZIPOutputStream;

import java.sql.Connection;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.quadcap.sql.tools.XmlDump;

import com.quadcap.util.Debug;

/**
 *
 * @author Stan Bailes
 */

public class XmlDumpServlet extends HttpServlet {
    /**
     * Initialize this servlet
     *
     * @param config the servlet configuration object, containing my
     *          initialization parameters
     * @exception ServletException if I can't initialize for some reason.
     */
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
    }
    
    /**
     * Handle an incoming request.
     *
     * @param req HttpServletRequest that encapsulates the request to
     *          the servlet 
     * @param res HttpServletResponse that encapsulates the response
     *          from the servlet
     * 
     * @exception IOException if detected when handling the request
     * @exception ServletException if the request could not be handled
     */
    protected void service(HttpServletRequest req, HttpServletResponse res)
        throws ServletException, IOException
    {
        try {
            HttpSession session = req.getSession(true);
            if (session == null) throw new ServletException("No session");
            AdminSession admin = 
                (AdminSession)session.getValue("admin");
            if (admin == null) 
                throw new ServletException("no admin session");
            res.setHeader("Content-Disposition",
                          "attachment; filename=\"dumpdb.xml.gz\"");
            String dbName = req.getParameter("dbName"); 
            if (dbName == null) {
                throw new ServletException("no dbName");
            }
            OutputStream w = res.getOutputStream();
            GZIPOutputStream gz = new GZIPOutputStream(w);
            OutputStreamWriter ow = new OutputStreamWriter(gz);
            Connection conn = admin.getConnection(dbName);
            XmlDump dump = new XmlDump(conn);
            dump.dumpTables(ow);
            gz.finish();
            ow.flush();
        } catch (Exception e) {
            Debug.print(e);
            res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                           e.toString());
        }
    }
}