ceph/src/crimson/crush/CrushLocation.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 #pragma once
   4
   5 #include <iosfwd>
   6 #include <map>
   7 #include <string>
   8 #if FMT_VERSION >= 90000
   9 #include <fmt/ostream.h>
  10 #endif
  11
  12 #include <seastar/core/seastar.hh>
  13
  14 namespace crimson::crush {
  15
  16 class CrushLocation {
  17 public:
  18   explicit CrushLocation() {
  19   }
  20
  21   seastar::future<> update_from_conf();  ///< refresh from config
  22   seastar::future<> init_on_startup();
  23   seastar::future<> update_from_hook();  ///< call hook, if present
  24
  25   std::multimap<std::string, std::string> get_location() const;
  26
  27 private:
  28   void _parse(const std::string& s);
  29   std::multimap<std::string, std::string> loc;
  30 };
  31
  32 std::ostream& operator<<(std::ostream& os, const CrushLocation& loc);
  33 }
  34
  35 #if FMT_VERSION >= 90000
  36 template <> struct fmt::formatter<crimson::crush::CrushLocation> : fmt::ostream_formatter {};
  37 #endif