ceph/src/crimson/osd/osd_meta.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #pragma once
   5
   6 #include <map>
   7 #include <string>
   8 #include <seastar/core/future.hh>
   9 #include "osd/osd_types.h"
  10
  11 namespace ceph::os {
  12   class CyanStore;
  13   class Collection;
  14   class Transaction;
  15 }
  16
  17 /// metadata shared across PGs, or put in another way,
  18 /// metadata not specific to certain PGs.
  19 class OSDMeta {
  20   template<typename T> using Ref = boost::intrusive_ptr<T>;
  21
  22   ceph::os::CyanStore* store;
  23   Ref<ceph::os::Collection> coll;
  24
  25 public:
  26   OSDMeta(Ref<ceph::os::Collection> coll,
  27           ceph::os::CyanStore* store)
  28     : store{store}, coll{coll}
  29   {}
  30
  31
  32   auto collection() {
  33     return coll;
  34   }
  35   void create(ceph::os::Transaction& t);
  36
  37   void store_map(ceph::os::Transaction& t,
  38                  epoch_t e, const bufferlist& m);
  39   seastar::future<bufferlist> load_map(epoch_t e);
  40
  41   void store_superblock(ceph::os::Transaction& t,
  42                         const OSDSuperblock& sb);
  43   seastar::future<OSDSuperblock> load_superblock();
  44
  45   using ec_profile_t = std::map<std::string, std::string>;
  46   seastar::future<pg_pool_t,
  47                   std::string,
  48                   ec_profile_t> load_final_pool_info(int64_t pool);
  49 private:
  50   static ghobject_t osdmap_oid(epoch_t epoch);
  51   static ghobject_t final_pool_info_oid(int64_t pool);
  52   static ghobject_t superblock_oid();
  53 };