ceph/src/mds/FSMapUser.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  */
  13
  14 #ifndef CEPH_FSMAPCOMPACT_H
  15 #define CEPH_FSMAPCOMPACT_H
  16
  17 #include <map>
  18 #include <string>
  19 #include <string_view>
  20
  21 #include "mds/mdstypes.h"
  22
  23 class FSMapUser {
  24 public:
  25   struct fs_info_t {
  26     fs_info_t() {}
  27     void encode(ceph::buffer::list& bl, uint64_t features) const;
  28     void decode(ceph::buffer::list::const_iterator &bl);
  29     std::string name;
  30     fs_cluster_id_t cid = FS_CLUSTER_ID_NONE;
  31   };
  32
  33   FSMapUser() {}
  34
  35   epoch_t get_epoch() const { return epoch; }
  36
  37   fs_cluster_id_t get_fs_cid(std::string_view name) const {
  38     for (auto &p : filesystems) {
  39       if (p.second.name == name)
  40         return p.first;
  41     }
  42     return FS_CLUSTER_ID_NONE;
  43   }
  44
  45   void encode(ceph::buffer::list& bl, uint64_t features) const;
  46   void decode(ceph::buffer::list::const_iterator& bl);
  47
  48   void print(std::ostream& out) const;
  49   void print_summary(ceph::Formatter *f, std::ostream *out) const;
  50
  51   static void generate_test_instances(std::list<FSMapUser*>& ls);
  52
  53   std::map<fs_cluster_id_t, fs_info_t> filesystems;
  54   fs_cluster_id_t legacy_client_fscid = FS_CLUSTER_ID_NONE;
  55   epoch_t epoch = 0;
  56 };
  57 WRITE_CLASS_ENCODER_FEATURES(FSMapUser::fs_info_t)
  58 WRITE_CLASS_ENCODER_FEATURES(FSMapUser)
  59
  60 inline std::ostream& operator<<(std::ostream& out, const FSMapUser& m) {
  61   m.print_summary(NULL, &out);
  62   return out;
  63 }
  64 #endif