Package com.khs.sherpa.servlet

Source Code of com.khs.sherpa.servlet.SherpaServlet

package com.khs.sherpa.servlet;

/*
* Copyright 2012 the original author or authors.
*
* Licensed 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.
*/
import static com.khs.sherpa.util.Util.msg;

import java.io.IOException;

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.khs.sherpa.context.GenericApplicationContext;
import com.khs.sherpa.exception.SherpaInvalidUsernamePassword;
import com.khs.sherpa.exception.SherpaRuntimeException;
import com.khs.sherpa.servlet.request.DefaultSherpaRequest;

public class SherpaServlet extends HttpServlet {

  private static final long serialVersionUID = 4345668988238038540L
 
  private static final Logger LOGGER = LoggerFactory.getLogger(SherpaServlet.class);

  @Override
  public void init() throws ServletException {
    super.init();
  }

  private void doService(HttpServletRequest request, HttpServletResponse response) throws RuntimeException, IOException {
    try {
     
      DefaultSherpaRequest sherpaRequest = new DefaultSherpaRequest();
      sherpaRequest.setApplicationContext(GenericApplicationContext.getApplicationContext(getServletContext()));

      sherpaRequest.doService(request, response);
     
    } catch (SherpaInvalidUsernamePassword e) {
      response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
      response.setContentType("application/json");
      LOGGER.info(msg("INFO "+e.getMessage() ));     
    } catch (SherpaRuntimeException e) {
      response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
      response.setContentType("application/json");
      LOGGER.error(msg("ERROR "+e.getMessage() ));
    } catch (Exception e) {
      response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
      response.setContentType("application/json");
    } finally {
      // do nothing right now
    }
  }
 
  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doService(request, response);
  }

  /**
   * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
   */
  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doService(request, response);
  }

  @Override
  protected void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doService(request, response);
  }

  @Override
  protected void doDelete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doService(request, response);
  }

  @Override
  protected long getLastModified(HttpServletRequest req) {
    return super.getLastModified(req);
  }

  @Override
  protected void doHead(HttpServletRequest req, HttpServletResponse resp)
      throws ServletException, IOException {
    super.doHead(req, resp);
  }
 
  @Override
  protected void doOptions(HttpServletRequest req, HttpServletResponse resp)
      throws ServletException, IOException {
    super.doOptions(req, resp);
  }

  @Override
  protected void doTrace(HttpServletRequest req, HttpServletResponse resp)
      throws ServletException, IOException {
    super.doTrace(req, resp);
  }
 
}
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