Method get_foreign_config

src/mgr/ActivePyModules.cc:1394–1486

}

PyObject *ActivePyModules::get_foreign_config(
  const std::string& who,
  const std::string& name)
{
  dout(10) << "ceph_foreign_option_get " << who << " " << name << dendl;

  // NOTE: for now this will only work with build-in options, not module options.
  const Option *opt = g_conf().find_option(name);
  if (!opt) {
    dout(4) << "ceph_foreign_option_get " << name << " not found " << dendl;
    PyErr_Format(PyExc_KeyError, "option not found: %s", name.c_str());
    return nullptr;
  }

  // If the monitors are not yet running pacific, we cannot rely on our local
  // ConfigMap
  if (!have_local_config_map) {
    dout(20) << "mon cluster wasn't pacific when we started: falling back to 'config get'"
	     << dendl;
    without_gil_t no_gil;
    Command cmd;
    {
      std::lock_guard l(lock);
      cmd.run(
	&monc,
	"{\"prefix\": \"config get\","s +
	"\"who\": \""s + who + "\","s +
	"\"key\": \""s + name + "\"}");
    }
    cmd.wait();
    dout(10) << "ceph_foreign_option_get (mon command) " << who << " " << name << " = "
	     << cmd.outbl.to_str() << dendl;
    no_gil.acquire_gil();
    return get_python_typed_option_value(opt->type, cmd.outbl.to_str());
  }

  // mimic the behavor of mon/ConfigMonitor's 'config get' command
  EntityName entity;
  if (!entity.from_str(who) &&
      !entity.from_str(who + ".")) {
    dout(5) << "unrecognized entity '" << who << "'" << dendl;
    PyErr_Format(PyExc_KeyError, "invalid entity: %s", who.c_str());
    return nullptr;
  }

  without_gil_t no_gil;
  lock.lock();

  // FIXME: this is super inefficient, since we generate the entire daemon
  // config just to extract one value from it!

  std::map<std::string,std::string,std::less<>> config;
  cluster_state.with_osdmap([&](const OSDMap &osdmap) {
      std::map<string,string> crush_location;
      string device_class;
      if (entity.is_osd()) {
	osdmap.crush->get_full_location(who, &crush_location);
	int id = atoi(entity.get_id().c_str());