ceph/src/crimson/os/seastore/collection_manager.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 <seastar/core/future.hh>
   7
   8 #include "osd/osd_types.h"
   9
  10 #include "crimson/os/seastore/seastore_types.h"
  11 #include "crimson/os/seastore/transaction_manager.h"
  12
  13 namespace crimson::os::seastore {
  14
  15 struct coll_info_t {
  16   unsigned split_bits;
  17
  18   coll_info_t(unsigned bits)
  19     : split_bits(bits) {}
  20
  21   bool operator==(const coll_info_t &rhs) const {
  22     return split_bits == rhs.split_bits;
  23   }
  24 };
  25
  26 /// Interface for maintaining set of collections
  27 class CollectionManager {
  28 public:
  29   using base_iertr = TransactionManager::read_extent_iertr;
  30
  31     /// Initialize collection manager instance for an empty store
  32   using mkfs_iertr = TransactionManager::alloc_extent_iertr;
  33   using mkfs_ret = mkfs_iertr::future<coll_root_t>;
  34   virtual mkfs_ret mkfs(
  35     Transaction &t) = 0;
  36
  37   /// Create collection
  38   using create_iertr = base_iertr;
  39   using create_ret = create_iertr::future<>;
  40   virtual create_ret create(
  41     coll_root_t &root,
  42     Transaction &t,
  43     coll_t cid,
  44     coll_info_t info
  45   ) = 0;
  46
  47   /// List collections with info
  48   using list_iertr = base_iertr;
  49   using list_ret_bare = std::vector<std::pair<coll_t, coll_info_t>>;
  50   using list_ret = list_iertr::future<list_ret_bare>;
  51   virtual list_ret list(
  52     const coll_root_t &root,
  53     Transaction &t) = 0;
  54
  55   /// Remove cid
  56   using remove_iertr = base_iertr;
  57   using remove_ret = remove_iertr::future<>;
  58   virtual remove_ret remove(
  59     const coll_root_t &coll_root,
  60     Transaction &t,
  61     coll_t cid) = 0;
  62
  63   /// Update info for cid
  64   using update_iertr = base_iertr;
  65   using update_ret = base_iertr::future<>;
  66   virtual update_ret update(
  67     const coll_root_t &coll_root,
  68     Transaction &t,
  69     coll_t cid,
  70     coll_info_t info
  71   ) = 0;
  72
  73   virtual ~CollectionManager() {}
  74 };
  75 using CollectionManagerRef = std::unique_ptr<CollectionManager>;
  76
  77 namespace collection_manager {
  78 /* creat CollectionMapManager for Collection  */
  79 CollectionManagerRef create_coll_manager(
  80   TransactionManager &trans_manager);
  81
  82 }
  83
  84 }