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.response;
  
  import java.util.Map;
  
  import org.apache.log4j.Logger;
  
  import com.alibaba.cobar.CobarServer;
  import com.alibaba.cobar.manager.ManagerConnection;
  import com.alibaba.cobar.manager.parser.ManagerParseStop;
  import com.alibaba.cobar.mysql.MySQLDataNode;
  import com.alibaba.cobar.net.mysql.OkPacket;
  import com.alibaba.cobar.parser.util.Pair;
  import com.alibaba.cobar.util.FormatUtil;
  import com.alibaba.cobar.util.TimeUtil;
  
  /**
   * 暂停数据节点心跳检测
   * 
   * @author xianmao.hexm
   */
  public final class StopHeartbeat {
  
      private static final Logger logger = Logger.getLogger(StopHeartbeat.class);
  
      public static void execute(String stmt, ManagerConnection c) {
          int count = 0;
          Pair<String[], Integer> keys = ManagerParseStop.getPair(stmt);
          if (keys.getKey() != null && keys.getValue() != null) {
              long time = keys.getValue().intValue() * 1000L;
              Map<String, MySQLDataNode> dns = CobarServer.getInstance().getConfig().getDataNodes();
              for (String key : keys.getKey()) {
                  MySQLDataNode dn = dns.get(key);
                  if (dn != null) {
                      dn.setHeartbeatRecoveryTime(TimeUtil.currentTimeMillis() + time);
                      ++count;
                      StringBuilder s = new StringBuilder();
                      s.append(dn.getName()).append(" stop heartbeat '");
                      logger.warn(s.append(FormatUtil.formatTime(time, 3)).append("' by manager."));
                  }
              }
          }
          OkPacket packet = new OkPacket();
          packet.packetId = 1;
          packet.affectedRows = count;
          packet.serverStatus = 2;
          packet.write(c);
      }
  
  }
  