text: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  
  #pragma once
  
  #include <vector>
  #include <memory>
  #include <string>
  #include <unordered_map>
  #include <time.h>
  #include "ts/parentselectdefs.h"
  
  struct PLHostRecord;
  
  enum PLNHCmd { PL_NH_MARK_UP, PL_NH_MARK_DOWN };
  
  typedef enum {
    PL_NH_PARENT_UNDEFINED,
    PL_NH_PARENT_DIRECT,
    PL_NH_PARENT_SPECIFIED,
    PL_NH_PARENT_AGENT,
    PL_NH_PARENT_FAIL,
  } PLNHParentResultType;
  
  struct PLStatusTxn {
    PLNHParentResultType result = PL_NH_PARENT_UNDEFINED;
    bool retry                  = false;
  };
  
  class PLNextHopHealthStatus
  {
  public:
    void insert(std::vector<std::shared_ptr<PLHostRecord>> &hosts);
    void mark(TSHttpTxn txn, PLStatusTxn *healthTxn, const char *hostname, const size_t hostname_len, const in_port_t port,
              const PLNHCmd status, const time_t now = 0);
    PLNextHopHealthStatus(){};
  
  private:
    std::unordered_map<std::string, std::shared_ptr<PLHostRecord>> host_map;
  };
  