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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #ifndef CEPH_CACHE_OBJECT_CACHE_STORE_H | |
5 | #define CEPH_CACHE_OBJECT_CACHE_STORE_H | |
6 | ||
7 | #include "common/ceph_context.h" | |
8 | #include "common/ceph_mutex.h" | |
a4b75251 | 9 | #include "common/Timer.h" |
f67539c2 TL |
10 | #include "common/Throttle.h" |
11 | #include "common/Cond.h" | |
9f95a23c TL |
12 | #include "include/rados/librados.hpp" |
13 | ||
14 | #include "SimplePolicy.h" | |
15 | ||
16 | ||
17 | using librados::Rados; | |
18 | using librados::IoCtx; | |
19 | class Context; | |
20 | ||
21 | namespace ceph { | |
22 | namespace immutable_obj_cache { | |
23 | ||
24 | typedef shared_ptr<librados::Rados> RadosRef; | |
25 | typedef shared_ptr<librados::IoCtx> IoCtxRef; | |
26 | ||
27 | class ObjectCacheStore { | |
28 | public: | |
29 | ObjectCacheStore(CephContext *cct); | |
30 | ~ObjectCacheStore(); | |
31 | int init(bool reset); | |
32 | int shutdown(); | |
33 | int init_cache(); | |
34 | int lookup_object(std::string pool_nspace, | |
35 | uint64_t pool_id, uint64_t snap_id, | |
f67539c2 | 36 | uint64_t object_size, |
9f95a23c | 37 | std::string object_name, |
f91f0fd5 | 38 | bool return_dne_path, |
9f95a23c | 39 | std::string& target_cache_file_path); |
9f95a23c | 40 | private: |
f67539c2 TL |
41 | enum ThrottleTypeCode { |
42 | THROTTLE_CODE_BYTE, | |
43 | THROTTLE_CODE_OBJECT | |
44 | }; | |
45 | ||
9f95a23c TL |
46 | std::string get_cache_file_name(std::string pool_nspace, uint64_t pool_id, |
47 | uint64_t snap_id, std::string oid); | |
48 | std::string get_cache_file_path(std::string cache_file_name, | |
49 | bool mkdir = false); | |
50 | int evict_objects(); | |
51 | int do_promote(std::string pool_nspace, uint64_t pool_id, | |
52 | uint64_t snap_id, std::string object_name); | |
53 | int promote_object(librados::IoCtx*, std::string object_name, | |
54 | librados::bufferlist* read_buf, | |
55 | Context* on_finish); | |
56 | int handle_promote_callback(int, bufferlist*, std::string); | |
57 | int do_evict(std::string cache_file); | |
58 | ||
f67539c2 TL |
59 | bool take_token_from_throttle(uint64_t object_size, uint64_t object_num); |
60 | void handle_throttle_ready(uint64_t tokens, uint64_t type); | |
61 | void apply_qos_tick_and_limit(const uint64_t flag, | |
62 | std::chrono::milliseconds min_tick, | |
63 | uint64_t limit, uint64_t burst, | |
64 | std::chrono::seconds burst_seconds); | |
65 | ||
9f95a23c TL |
66 | CephContext *m_cct; |
67 | RadosRef m_rados; | |
68 | std::map<uint64_t, librados::IoCtx> m_ioctx_map; | |
69 | ceph::mutex m_ioctx_map_lock = | |
70 | ceph::make_mutex("ceph::cache::ObjectCacheStore::m_ioctx_map_lock"); | |
71 | Policy* m_policy; | |
72 | std::string m_cache_root_dir; | |
f67539c2 TL |
73 | // throttle mechanism |
74 | uint64_t m_qos_enabled_flag{0}; | |
75 | std::map<uint64_t, TokenBucketThrottle*> m_throttles; | |
76 | bool m_io_throttled{false}; | |
77 | ceph::mutex m_throttle_lock = | |
78 | ceph::make_mutex("ceph::cache::ObjectCacheStore::m_throttle_lock");; | |
79 | uint64_t m_iops_tokens{0}; | |
80 | uint64_t m_bps_tokens{0}; | |
9f95a23c TL |
81 | }; |
82 | ||
83 | } // namespace immutable_obj_cache | |
84 | } // ceph | |
85 | #endif // CEPH_CACHE_OBJECT_CACHE_STORE_H |