Function config_reloader

plugins/origin_server_auth/origin_server_auth.cc:1134–1181

}

int
config_reloader(TSCont cont, TSEvent /* event ATS_UNUSED */, void *edata)
{
  Dbg(dbg_ctl, "reloading configs");
  S3Config *s3 = static_cast<S3Config *>(TSContDataGet(cont));
  s3->check_current_action(edata);
  S3Config   *file_config  = gConfCache.get(s3->conf_fname());
  std::string config_fname = makeConfigPath(s3->conf_fname() == nullptr ? "" : s3->conf_fname());

  if (!file_config || !file_config->valid()) {
    TSError("[%s] invalid configuration for version: %s %s. Check mandatory fields. Scheduling reload", PLUGIN_NAME,
            s3->versionString(), config_fname.c_str());
    long delay = 1 << s3->incr_invalid_file_count();
    s3->schedule_conf_reload(delay);
    return TS_ERROR;
  }
  s3->reset_invalid_file_count();

  {
    std::unique_lock lock(s3->reload_mutex);
    s3->copy_changes_from(file_config);
  }

  if (s3->expiration() == 0) {
    Dbg(dbg_ctl, "disabling auto config reload for version: %s %s", s3->versionString(), config_fname.c_str());
  } else {
    // auto reload is scheduled to be 5 minutes before the expiration time to get some headroom
    long time_diff = s3->expiration() -
                     std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now().time_since_epoch()).count();
    if (time_diff > 0) {
      long delay = cal_reload_delay(time_diff);
      TSNote("scheduling config reload with %ld seconds delay for version: %s %s", delay, s3->versionString(),
             config_fname.c_str());
      s3->reset_conf_reload_count();
      s3->schedule_conf_reload(delay);
    } else {
      Dbg(dbg_ctl, "config expiration time for version: %s %s is in the past, re-checking in 1 minute", s3->versionString(),
          config_fname.c_str());
      if (s3->incr_conf_reload_count() % 10 == 0) {
        TSError("[%s] tried to reload config automatically but failed, please try manual reloading the config file: %s",
                PLUGIN_NAME, config_fname.c_str());
      }
      s3->schedule_conf_reload(60);
    }
  }

  return TS_SUCCESS;
}

///////////////////////////////////////////////////////////////////////////////
// Initialize the plugin.