MessageQueueServlet.java :  » Google-tech » vosao » org » vosao » servlet » Java Open Source

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vosao » org » vosao » servlet » MessageQueueServlet.java
/**
 * Vosao CMS. Simple CMS for Google App Engine.
 * 
 * Copyright (C) 2009-2010 Vosao development team.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * email: vosao.dev@gmail.com
 */

package org.vosao.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.vosao.business.mq.Message;
import org.vosao.business.mq.Subscriber;
import org.vosao.common.VosaoContext;
import org.vosao.entity.helper.UserHelper;
import org.vosao.utils.StreamUtil;

import com.google.appengine.repackaged.com.google.common.util.Base64;

/**
 * 
 * @author Alexander Oleynik
 *
 */
public class MessageQueueServlet extends AbstractServlet {

  public static final String MQ_URL = "/_ah/queue/mq";
  
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    execute(request, response);
  }
  
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    execute(request, response);
  }

  public void execute(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    String msg = request.getParameter("message");
    if (msg == null) {
      logger.error("Message is null");
      return;
    }
    try {
      Message message = (Message)StreamUtil.toObject(
          Base64.decode(request.getParameter("message")));
      VosaoContext.getInstance().setUser(UserHelper.ADMIN);
      getMessageQueue().execute(message);
    }
    catch(Exception e) {
      logger.error(e.getMessage());
      e.printStackTrace();
    }
  }
  
}
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