content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * 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.
   */
  
  package com.alibaba.cobar.manager.web.screen;
  
  import static com.alibaba.cobar.manager.util.ConstantDefine.CHOOSE_COBAR;
  import static com.alibaba.cobar.manager.util.ConstantDefine.CHOOSE_DATANODE;
  import static com.alibaba.cobar.manager.util.ConstantDefine.CONNECTION_FAIL;
  import static com.alibaba.cobar.manager.util.ConstantDefine.DATANODE_DIFF;
  import static com.alibaba.cobar.manager.util.ConstantDefine.LOGIN;
  import static com.alibaba.cobar.manager.util.ConstantDefine.PASSWORD_NULL;
  import static com.alibaba.cobar.manager.util.ConstantDefine.UNKNOW;
  import static com.alibaba.cobar.manager.util.ConstantDefine.USER_NULL;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.web.servlet.ModelAndView;
  import org.springframework.web.servlet.mvc.AbstractController;
  
  public class Alert extends AbstractController implements InitializingBean {
  
      @Override
      public void afterPropertiesSet() throws Exception {
  
      }
  
      @Override
      protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
              throws Exception {
          int reason = 0;
          String result = null;
          try {
              reason = Integer.parseInt(request.getParameter("reason").trim());
          } catch (NullPointerException e) {
              reason = 0;
          }
          result = typeMap.get(reason);
          if (null == result) {
              result = typeMap.get(UNKNOW);
          }
          return new ModelAndView("failure", "reason", result);
      }
  
      private static final Map<Integer, String> typeMap = new HashMap<Integer, String>();
      static {
          typeMap.put(UNKNOW, "unknown");
          typeMap.put(CHOOSE_COBAR, "choose cobar!");
          typeMap.put(CONNECTION_FAIL, "cann't connect to cobar in cluster");
          typeMap.put(DATANODE_DIFF, "datanodes index is not consistent");
          typeMap.put(LOGIN, "LOGIN");
          typeMap.put(USER_NULL, "username is null");
          typeMap.put(PASSWORD_NULL, "password is null");
          typeMap.put(CHOOSE_DATANODE, "choose datanode");
      }
  
  }
  