content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.nacos.naming.web;
  
  import com.alibaba.nacos.api.exception.runtime.NacosDeserializationException;
  import com.alibaba.nacos.common.utils.InternetAddressUtil;
  import com.alibaba.nacos.common.utils.JacksonUtils;
  import com.alibaba.nacos.common.utils.StringUtils;
  import com.alibaba.nacos.core.utils.ReuseHttpServletRequest;
  import com.alibaba.nacos.naming.healthcheck.RsInfo;
  
  /**
   * Distro IP and port tag generator.
   *
   * @author xiweng.yy
   */
  public class DistroIpPortTagGenerator implements DistroTagGenerator {
      
      private static final String PARAMETER_BEAT = "beat";
      
      private static final String PARAMETER_IP = "ip";
      
      private static final String PARAMETER_PORT = "port";
      
      @Override
      public String getResponsibleTag(ReuseHttpServletRequest request) {
          String ip = request.getParameter(PARAMETER_IP);
          String port = request.getParameter(PARAMETER_PORT);
          if (StringUtils.isBlank(ip)) {
              // some old version clients using beat parameter
              String beatStr = request.getParameter(PARAMETER_BEAT);
              if (StringUtils.isNotBlank(beatStr)) {
                  try {
                      RsInfo rsInfo = JacksonUtils.toObj(beatStr, RsInfo.class);
                      ip = rsInfo.getIp();
                      port = String.valueOf(rsInfo.getPort());
                  } catch (NacosDeserializationException ignored) {
                  }
              }
          }
          if (StringUtils.isNotBlank(ip)) {
              ip = ip.trim();
          }
          port = StringUtils.isBlank(port) ? "0" : port.trim();
          return ip + InternetAddressUtil.IP_PORT_SPLITER + port;
      }
  }
  