晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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/* Copyright 2021 Codership Oy <info@codership.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

#ifndef WSREP_STATUS_H
#define WSREP_STATUS_H

/* wsrep-lib */
#include "wsrep/reporter.hpp"

/* implementation */
#include "wsrep_mutex.h"

class Wsrep_status
{
public:
  static void init_once(const std::string& file_name);
  static void destroy();

  static void report_state(enum wsrep::server_state::state const state)
  {
    if (!Wsrep_status::m_instance) return;

    Wsrep_status::m_instance->report_state(state);
  }

  static void report_progress(const std::string& progress)
  {
    if (!Wsrep_status::m_instance) return;

    Wsrep_status::m_instance->report_progress(progress);
  }

  static void report_event(const std::string& event)
  {
    if (!Wsrep_status::m_instance) return;

    Wsrep_status::m_instance->report_event(event);
  }

  static void report_log_msg(wsrep::reporter::log_level level,
                             const char* tag, size_t tag_len,
                             const char* buf, size_t buf_len,
                             double const tstamp = wsrep::reporter::undefined);

  static bool is_instance_initialized()
  {
      return m_instance;
  }

private:
  Wsrep_status(const std::string& file_name);

  static Wsrep_mutex*     m_mutex;
  static wsrep::reporter* m_instance;
};

#endif /* WSREP_STATUS_H */