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.action;
  
  import static com.alibaba.cobar.manager.util.ConstantDefine.CONFIG_RELOAD;
  import static com.alibaba.cobar.manager.util.ConstantDefine.CONFIG_ROLLBACK;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.concurrent.locks.ReentrantLock;
  
  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;
  
  import com.alibaba.cobar.manager.dao.CobarAdapterDAO;
  import com.alibaba.cobar.manager.dataobject.xml.CobarDO;
  import com.alibaba.cobar.manager.dataobject.xml.UserDO;
  import com.alibaba.cobar.manager.service.CobarAccesser;
  import com.alibaba.cobar.manager.service.XmlAccesser;
  import com.alibaba.cobar.manager.util.CobarStringUtil;
  import com.alibaba.cobar.manager.util.ConstantDefine;
  
  /**
   * @author haiqing.zhuhq 2011-6-27
   */
  public class PropertyReload extends AbstractController implements InitializingBean {
      private static Map<String, Integer> typeMap;
      private XmlAccesser xmlAccesser;
      private CobarAccesser cobarAccesser;
      private static final ReentrantLock lock = new ReentrantLock();
  
      public void setXmlAccesser(XmlAccesser xmlAccesser) {
          this.xmlAccesser = xmlAccesser;
      }
  
      public void setCobarAccesser(CobarAccesser cobarAccesser) {
          this.cobarAccesser = cobarAccesser;
      }
  
      static {
          typeMap = new HashMap<String, Integer>();
          typeMap.put("configReload", CONFIG_RELOAD);
          typeMap.put("configRollback", CONFIG_ROLLBACK);
      }
  
      @Override
      public void afterPropertiesSet() throws Exception {
          if (xmlAccesser == null) {
              throw new IllegalArgumentException("property 'xmlAccesser' is null!");
          }
          if (null == cobarAccesser) {
              throw new IllegalArgumentException("property 'cobarAccesser' is null!");
          }
      }
  
      @Override
      protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
              throws Exception {
          UserDO user = (UserDO) request.getSession().getAttribute("user");
          String types = request.getParameter("type");
          int type = typeMap.get(types);
          String list = request.getParameter("list");
          String temp[] = list.split(",");
          int index[] = new int[temp.length];
          for (int i = 0; i < temp.length; i++) {
              index[i] = Integer.parseInt(temp[i]);
          }
          if (logger.isWarnEnabled()) {
              StringBuilder log =
                      new StringBuilder(user.getUsername()).append(" | do ").append(types).append(" | cobar:");
              for (int i = 0; i < index.length; i++) {
                  log.append(xmlAccesser.getCobarDAO().getCobarById(index[i])).append(" ");
              }
              logger.warn(log.toString());
          }
          List<Map<String, Object>> resultList = new ArrayList<Map<String, Object>>();
  
          lock.lock();
          try {
              switch (type) {
              case CONFIG_RELOAD:
                  for (int i = 0; i < index.length; i++) {
                      CobarDO c = xmlAccesser.getCobarDAO().getCobarById(index[i]);
                      Map<String, Object> map = new HashMap<String, Object>();
                      map.put("name", CobarStringUtil.htmlEscapedString(c.getName()));
                      if (c.getStatus().equals(ConstantDefine.ACTIVE)) {
                          CobarAdapterDAO perf = cobarAccesser.getAccesser(index[i]);
                          if (perf.checkConnection()) {
                              if (perf.reloadConfig()) {
                                  map.put("result", "success");
                              } else {
                                  map.put("result", "config reload error");
                              }
                          } else {
                              map.put("result", "connection error");
                          }
                      } else {
                          map.put("result", "cobar InActive");
                      }
                      resultList.add(map);
                  }
                  break;
              case CONFIG_ROLLBACK:
                  for (int i = 0; i < index.length; i++) {
                      CobarDO c = xmlAccesser.getCobarDAO().getCobarById(index[i]);
                      Map<String, Object> map = new HashMap<String, Object>();
                      map.put("name", CobarStringUtil.htmlEscapedString(c.getName()));
                      if (c.getStatus().equals(ConstantDefine.ACTIVE)) {
                          CobarAdapterDAO perf = cobarAccesser.getAccesser(index[i]);
                          if (perf.checkConnection()) {
                              if (perf.rollbackConfig()) {
                                  map.put("result", "success");
                              } else {
                                  map.put("result", "config reload error");
                              }
                          } else {
                              map.put("result", "connection error");
                          }
                      } else {
                          map.put("result", "cobar InActive");
                      }
                      resultList.add(map);
                  }
                  break;
              default:
                  logger.error("Wrong property control type!");
                  break;
  
              }
          } catch (Exception e) {
              logger.error(e.getMessage(), e);
              Map<String, Object> map = new HashMap<String, Object>();
              map.put("name", "UNKNOWN ERROR");
              map.put("result", "unknown exception occurs when reloading");
              resultList.clear();
              resultList.add(map);
          } finally {
              lock.unlock();
          }
  
          return new ModelAndView("c_result", "resultList", resultList);
      }
  
  }
  