/**
* Copyright (c) 2012, Andy Janata
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of conditions
* and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package net.socialgamer.cah.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import net.socialgamer.cah.Constants.AjaxRequest;
import net.socialgamer.cah.Constants.AjaxResponse;
import net.socialgamer.cah.Constants.ErrorCode;
import net.socialgamer.cah.Constants.ReturnableData;
import net.socialgamer.cah.Constants.SessionAttribute;
import net.socialgamer.cah.RequestWrapper;
import net.socialgamer.cah.data.User;
import net.socialgamer.cah.handlers.Handler;
import net.socialgamer.cah.handlers.Handlers;
/**
* Servlet implementation class AjaxServlet.
*
* This servlet is only used for client actions, not for long-polling.
*
* @author Andy Janata (ajanata@socialgamer.net)
*/
@WebServlet("/AjaxServlet")
public class AjaxServlet extends CahServlet {
private static final long serialVersionUID = 1L;
/**
* @see CahServlet#doPost(HttpServletRequest request, HttpServletResponse response, HttpSession
* hSession)
*/
@Override
protected void handleRequest(final HttpServletRequest request,
final HttpServletResponse response, final HttpSession hSession) throws ServletException,
IOException {
final PrintWriter out = response.getWriter();
final User user = (User) hSession.getAttribute(SessionAttribute.USER);
if (null != user) {
user.userDidSomething();
}
int serial = -1;
if (request.getParameter(AjaxRequest.SERIAL.toString()) != null) {
try {
serial = Integer.parseInt(request.getParameter(AjaxRequest.SERIAL.toString()));
} catch (final NumberFormatException nfe) {
returnError(user, out, ErrorCode.BAD_REQUEST, -1);
return;
}
}
final String op = request.getParameter(AjaxRequest.OP.toString());
if (op == null || op.equals("")) {
returnError(user, out, ErrorCode.OP_NOT_SPECIFIED, serial);
return;
}
final Handler handler;
try {
handler = getInjector().getInstance(Handlers.LIST.get(op));
} catch (final Exception e) {
log((User) hSession.getAttribute(SessionAttribute.USER), "Exception handling op " + op + ": "
+ e.toString());
returnError(user, out, ErrorCode.BAD_OP, serial);
return;
}
final Map<ReturnableData, Object> data = handler.handle(new RequestWrapper(request), hSession);
handler.cleanUp();
data.put(AjaxResponse.SERIAL, serial);
returnData(user, out, data);
return;
}
}