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 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.ClusterDO;
  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 2011-8-17
   */
  public class StopHeartbeat extends AbstractController implements InitializingBean {
      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;
      }
  
      @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) {
          UserDO user = (UserDO) request.getSession().getAttribute("user");
          String datanodes = request.getParameter("datanodes");
          int time = Integer.parseInt(request.getParameter("stoptime"));
          long clusterId = Long.parseLong(request.getParameter("clusterIdK"));
          ClusterDO cluster = xmlAccesser.getClusterDAO().getClusterById(clusterId);
          List<Map<String, Object>> resultList = new ArrayList<Map<String, Object>>();
  
          if (logger.isWarnEnabled()) {
              StringBuilder log = new StringBuilder();
              log.append(user.getUsername()).append(" | stop heartbeat | cluster:");
              log.append(cluster.getName()).append(" | ");
              log.append(datanodes).append(" | time:");
              log.append(time);
              logger.warn(log.toString());
          }
  
          List<CobarDO> cobarList = null;
  
          lock.lock();
          try {
              cobarList = xmlAccesser.getCobarDAO().getCobarList(clusterId, ConstantDefine.ACTIVE);
              for (CobarDO c : cobarList) {
                  CobarAdapterDAO control = cobarAccesser.getAccesser(c.getId());
                  Map<String, Object> map = new HashMap<String, Object>();
                  map.put("name", CobarStringUtil.htmlEscapedString(c.getName()));
                  if (control.checkConnection()) {
                      int num = control.stopHeartbeat(datanodes, time);
                      map.put("result", num + " rows");
                  } else {
                      map.put("result", "connction error!");
                  }
                  resultList.add(map);
              }
          } 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 stopping heartbeat");
              resultList.clear();
              resultList.add(map);
          } finally {
              lock.unlock();
          }
  
          return new ModelAndView("c_result", "resultList", resultList);
  
      }
  }
  