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 <boost/utility/string_view.hpp>
  20
  21 #include "mds/mdstypes.h"
  22
  23 class FSMapUser {
  24 public:
  25   struct fs_info_t {
  26     fs_cluster_id_t cid;
  27     std::string name;
  28     fs_info_t() : cid(FS_CLUSTER_ID_NONE) {}
  29     void encode(bufferlist& bl, uint64_t features) const;
  30     void decode(bufferlist::iterator &bl);
  31   };
  32
  33   epoch_t epoch;
  34   fs_cluster_id_t legacy_client_fscid;
  35   std::map<fs_cluster_id_t, fs_info_t> filesystems;
  36
  37   FSMapUser()
  38     : epoch(0), legacy_client_fscid(FS_CLUSTER_ID_NONE) { }
  39
  40   epoch_t get_epoch() const { return epoch; }
  41
  42   fs_cluster_id_t get_fs_cid(boost::string_view name) const {
  43     for (auto &p : filesystems) {
  44       if (p.second.name == name)
  45         return p.first;
  46     }
  47     return FS_CLUSTER_ID_NONE;
  48   }
  49
  50   void encode(bufferlist& bl, uint64_t features) const;
  51   void decode(bufferlist::iterator& bl);
  52
  53   void print(ostream& out) const;
  54   void print_summary(Formatter *f, ostream *out);
  55
  56   static void generate_test_instances(list<FSMapUser*>& ls);
  57 };
  58 WRITE_CLASS_ENCODER_FEATURES(FSMapUser::fs_info_t)
  59 WRITE_CLASS_ENCODER_FEATURES(FSMapUser)
  60
  61 inline ostream& operator<<(ostream& out, FSMapUser& m) {
  62   m.print_summary(NULL, &out);
  63   return out;
  64 }
  65 #endif