[ceph.git] / ceph / src / os / memstore / MemStore.h

// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
 * Ceph - scalable distributed file system
 *
 * Copyright (C) 2013- Sage Weil <sage@inktank.com>
 *
 * This is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 2.1, as published by the Free Software
 * Foundation.  See file COPYING.
 *
 */


#ifndef CEPH_MEMSTORE_H
#define CEPH_MEMSTORE_H

#include <mutex>
#include <boost/intrusive_ptr.hpp>

#include "include/unordered_map.h"
#include "include/memory.h"
#include "include/Spinlock.h"
#include "common/Finisher.h"
#include "common/RefCountedObj.h"
#include "common/RWLock.h"
#include "os/ObjectStore.h"
#include "PageSet.h"
#include "include/assert.h"

class MemStore : public ObjectStore {
public:
  struct Object : public RefCountedObject {
    std::mutex xattr_mutex;
    std::mutex omap_mutex;
    map<string,bufferptr> xattr;
    bufferlist omap_header;
    map<string,bufferlist> omap;

    typedef boost::intrusive_ptr<Object> Ref;
    friend void intrusive_ptr_add_ref(Object *o) { o->get(); }
    friend void intrusive_ptr_release(Object *o) { o->put(); }

    Object() : RefCountedObject(nullptr, 0) {}
    // interface for object data
    virtual size_t get_size() const = 0;
    virtual int read(uint64_t offset, uint64_t len, bufferlist &bl) = 0;
    virtual int write(uint64_t offset, const bufferlist &bl) = 0;
    virtual int clone(Object *src, uint64_t srcoff, uint64_t len,
                      uint64_t dstoff) = 0;
    virtual int truncate(uint64_t offset) = 0;
    virtual void encode(bufferlist& bl) const = 0;
    virtual void decode(bufferlist::iterator& p) = 0;

    void encode_base(bufferlist& bl) const {
      ::encode(xattr, bl);
      ::encode(omap_header, bl);
      ::encode(omap, bl);
    }
    void decode_base(bufferlist::iterator& p) {
      ::decode(xattr, p);
      ::decode(omap_header, p);
      ::decode(omap, p);
    }

    void dump(Formatter *f) const {
      f->dump_int("data_len", get_size());
      f->dump_int("omap_header_len", omap_header.length());

      f->open_array_section("xattrs");
      for (map<string,bufferptr>::const_iterator p = xattr.begin();
	   p != xattr.end();
	   ++p) {
	f->open_object_section("xattr");
	f->dump_string("name", p->first);
	f->dump_int("length", p->second.length());
	f->close_section();
      }
      f->close_section();

      f->open_array_section("omap");
      for (map<string,bufferlist>::const_iterator p = omap.begin();
	   p != omap.end();
	   ++p) {
	f->open_object_section("pair");
	f->dump_string("key", p->first);
	f->dump_int("length", p->second.length());
	f->close_section();
      }
      f->close_section();
    }
  };
  typedef Object::Ref ObjectRef;

  struct PageSetObject;
  struct Collection : public CollectionImpl {
    coll_t cid;
    int bits;
    CephContext *cct;
    bool use_page_set;
    ceph::unordered_map<ghobject_t, ObjectRef> object_hash;  ///< for lookup
    map<ghobject_t, ObjectRef> object_map;        ///< for iteration
    map<string,bufferptr> xattr;
    RWLock lock;   ///< for object_{map,hash}
    bool exists;

    typedef boost::intrusive_ptr<Collection> Ref;
    friend void intrusive_ptr_add_ref(Collection *c) { c->get(); }
    friend void intrusive_ptr_release(Collection *c) { c->put(); }

    const coll_t &get_cid() override {
      return cid;
    }

    ObjectRef create_object() const;

    // NOTE: The lock only needs to protect the object_map/hash, not the
    // contents of individual objects.  The osd is already sequencing
    // reads and writes, so we will never see them concurrently at this
    // level.

    ObjectRef get_object(ghobject_t oid) {
      RWLock::RLocker l(lock);
      auto o = object_hash.find(oid);
      if (o == object_hash.end())
	return ObjectRef();
      return o->second;
    }

    ObjectRef get_or_create_object(ghobject_t oid) {
      RWLock::WLocker l(lock);
      auto result = object_hash.emplace(oid, ObjectRef());
      if (result.second)
        object_map[oid] = result.first->second = create_object();
      return result.first->second;
    }

    void encode(bufferlist& bl) const {
      ENCODE_START(1, 1, bl);
      ::encode(xattr, bl);
      ::encode(use_page_set, bl);
      uint32_t s = object_map.size();
      ::encode(s, bl);
      for (map<ghobject_t, ObjectRef>::const_iterator p = object_map.begin();
	   p != object_map.end();
	   ++p) {
	::encode(p->first, bl);
	p->second->encode(bl);
      }
      ENCODE_FINISH(bl);
    }
    void decode(bufferlist::iterator& p) {
      DECODE_START(1, p);
      ::decode(xattr, p);
      ::decode(use_page_set, p);
      uint32_t s;
      ::decode(s, p);
      while (s--) {
	ghobject_t k;
	::decode(k, p);
	auto o = create_object();
	o->decode(p);
	object_map.insert(make_pair(k, o));
	object_hash.insert(make_pair(k, o));
      }
      DECODE_FINISH(p);
    }

    uint64_t used_bytes() const {
      uint64_t result = 0;
      for (map<ghobject_t, ObjectRef>::const_iterator p = object_map.begin();
	   p != object_map.end();
	   ++p) {
        result += p->second->get_size();
      }

      return result;
    }

    explicit Collection(CephContext *cct, coll_t c)
      : cid(c),
	cct(cct),
	use_page_set(cct->_conf->memstore_page_set),
        lock("MemStore::Collection::lock", true, false),
	exists(true) {}
  };
  typedef Collection::Ref CollectionRef;

private:
  class OmapIteratorImpl;


  ceph::unordered_map<coll_t, CollectionRef> coll_map;
  RWLock coll_lock;    ///< rwlock to protect coll_map

  CollectionRef get_collection(const coll_t& cid);

  Finisher finisher;

  uint64_t used_bytes;

  void _do_transaction(Transaction& t);

  int _touch(const coll_t& cid, const ghobject_t& oid);
  int _write(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len,
	      const bufferlist& bl, uint32_t fadvise_flags = 0);
  int _zero(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len);
  int _truncate(const coll_t& cid, const ghobject_t& oid, uint64_t size);
  int _remove(const coll_t& cid, const ghobject_t& oid);
  int _setattrs(const coll_t& cid, const ghobject_t& oid, map<string,bufferptr>& aset);
  int _rmattr(const coll_t& cid, const ghobject_t& oid, const char *name);
  int _rmattrs(const coll_t& cid, const ghobject_t& oid);
  int _clone(const coll_t& cid, const ghobject_t& oldoid, const ghobject_t& newoid);
  int _clone_range(const coll_t& cid, const ghobject_t& oldoid,
		   const ghobject_t& newoid,
		   uint64_t srcoff, uint64_t len, uint64_t dstoff);
  int _omap_clear(const coll_t& cid, const ghobject_t &oid);
  int _omap_setkeys(const coll_t& cid, const ghobject_t &oid, bufferlist& aset_bl);
  int _omap_rmkeys(const coll_t& cid, const ghobject_t &oid, bufferlist& keys_bl);
  int _omap_rmkeyrange(const coll_t& cid, const ghobject_t &oid,
		       const string& first, const string& last);
  int _omap_setheader(const coll_t& cid, const ghobject_t &oid, const bufferlist &bl);

  int _collection_hint_expected_num_objs(const coll_t& cid, uint32_t pg_num,
      uint64_t num_objs) const { return 0; }
  int _create_collection(const coll_t& c, int bits);
  int _destroy_collection(const coll_t& c);
  int _collection_add(const coll_t& cid, const coll_t& ocid, const ghobject_t& oid);
  int _collection_move_rename(const coll_t& oldcid, const ghobject_t& oldoid,
			      coll_t cid, const ghobject_t& o);
  int _split_collection(const coll_t& cid, uint32_t bits, uint32_t rem, coll_t dest);

  int _save();
  int _load();

  void dump(Formatter *f);
  void dump_all();

public:
  MemStore(CephContext *cct, const string& path)
    : ObjectStore(cct, path),
      coll_lock("MemStore::coll_lock"),
      finisher(cct),
      used_bytes(0) {}
  ~MemStore() override { }

  string get_type() override {
    return "memstore";
  }

  bool test_mount_in_use() override {
    return false;
  }

  int mount() override;
  int umount() override;

  int fsck(bool deep) override {
    return 0;
  }

  int validate_hobject_key(const hobject_t &obj) const override {
    return 0;
  }
  unsigned get_max_attr_name_length() override {
    return 256;  // arbitrary; there is no real limit internally
  }

  int mkfs() override;
  int mkjournal() override {
    return 0;
  }
  bool wants_journal() override {
    return false;
  }
  bool allows_journal() override {
    return false;
  }
  bool needs_journal() override {
    return false;
  }

  int statfs(struct store_statfs_t *buf) override;

  bool exists(const coll_t& cid, const ghobject_t& oid) override;
  bool exists(CollectionHandle &c, const ghobject_t& oid) override;
  int stat(const coll_t& cid, const ghobject_t& oid,
	   struct stat *st, bool allow_eio = false) override;
  int stat(CollectionHandle &c, const ghobject_t& oid,
	   struct stat *st, bool allow_eio = false) override;
  int set_collection_opts(
    const coll_t& cid,
    const pool_opts_t& opts) override;
  int read(
    const coll_t& cid,
    const ghobject_t& oid,
    uint64_t offset,
    size_t len,
    bufferlist& bl,
    uint32_t op_flags = 0) override;
  int read(
    CollectionHandle &c,
    const ghobject_t& oid,
    uint64_t offset,
    size_t len,
    bufferlist& bl,
    uint32_t op_flags = 0) override;
  using ObjectStore::fiemap;
  int fiemap(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len, bufferlist& bl) override;
  int fiemap(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len, map<uint64_t, uint64_t>& destmap) override;
  int getattr(const coll_t& cid, const ghobject_t& oid, const char *name,
	      bufferptr& value) override;
  int getattr(CollectionHandle &c, const ghobject_t& oid, const char *name,
	      bufferptr& value) override;
  int getattrs(const coll_t& cid, const ghobject_t& oid,
	       map<string,bufferptr>& aset) override;
  int getattrs(CollectionHandle &c, const ghobject_t& oid,
	       map<string,bufferptr>& aset) override;

  int list_collections(vector<coll_t>& ls) override;

  CollectionHandle open_collection(const coll_t& c) override {
    return get_collection(c);
  }
  bool collection_exists(const coll_t& c) override;
  int collection_empty(const coll_t& c, bool *empty) override;
  int collection_bits(const coll_t& c) override;
  using ObjectStore::collection_list;
  int collection_list(const coll_t& cid,
		      const ghobject_t& start, const ghobject_t& end, int max,
		      vector<ghobject_t> *ls, ghobject_t *next) override;

  using ObjectStore::omap_get;
  int omap_get(
    const coll_t& cid,                ///< [in] Collection containing oid
    const ghobject_t &oid,   ///< [in] Object containing omap
    bufferlist *header,      ///< [out] omap header
    map<string, bufferlist> *out /// < [out] Key to value map
    ) override;

  using ObjectStore::omap_get_header;
  /// Get omap header
  int omap_get_header(
    const coll_t& cid,                ///< [in] Collection containing oid
    const ghobject_t &oid,   ///< [in] Object containing omap
    bufferlist *header,      ///< [out] omap header
    bool allow_eio = false ///< [in] don't assert on eio
    ) override;

  using ObjectStore::omap_get_keys;
  /// Get keys defined on oid
  int omap_get_keys(
    const coll_t& cid,              ///< [in] Collection containing oid
    const ghobject_t &oid, ///< [in] Object containing omap
    set<string> *keys      ///< [out] Keys defined on oid
    ) override;

  using ObjectStore::omap_get_values;
  /// Get key values
  int omap_get_values(
    const coll_t& cid,                    ///< [in] Collection containing oid
    const ghobject_t &oid,       ///< [in] Object containing omap
    const set<string> &keys,     ///< [in] Keys to get
    map<string, bufferlist> *out ///< [out] Returned keys and values
    ) override;

  using ObjectStore::omap_check_keys;
  /// Filters keys into out which are defined on oid
  int omap_check_keys(
    const coll_t& cid,                ///< [in] Collection containing oid
    const ghobject_t &oid,   ///< [in] Object containing omap
    const set<string> &keys, ///< [in] Keys to check
    set<string> *out         ///< [out] Subset of keys defined on oid
    ) override;

  using ObjectStore::get_omap_iterator;
  ObjectMap::ObjectMapIterator get_omap_iterator(
    const coll_t& cid,              ///< [in] collection
    const ghobject_t &oid  ///< [in] object
    ) override;

  void set_fsid(uuid_d u) override;
  uuid_d get_fsid() override;

  uint64_t estimate_objects_overhead(uint64_t num_objects) override {
    return 0; //do not care
  }

  objectstore_perf_stat_t get_cur_stats() override;

  const PerfCounters* get_perf_counters() const override {
    return nullptr;
  }


  int queue_transactions(
    Sequencer *osr, vector<Transaction>& tls,
    TrackedOpRef op = TrackedOpRef(),
    ThreadPool::TPHandle *handle = NULL) override;
};


#endif
Commit	Line	Data
7c673cae FG	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) 2013- Sage Weil <sage@inktank.com>
	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
	15
	16	#ifndef CEPH_MEMSTORE_H
	17	#define CEPH_MEMSTORE_H
	18
	19	#include <mutex>
	20	#include <boost/intrusive_ptr.hpp>
	21
	22	#include "include/unordered_map.h"
	23	#include "include/memory.h"
	24	#include "include/Spinlock.h"
	25	#include "common/Finisher.h"
	26	#include "common/RefCountedObj.h"
	27	#include "common/RWLock.h"
	28	#include "os/ObjectStore.h"
	29	#include "PageSet.h"
	30	#include "include/assert.h"
	31
	32	class MemStore : public ObjectStore {
	33	public:
	34	struct Object : public RefCountedObject {
	35	std::mutex xattr_mutex;
	36	std::mutex omap_mutex;
	37	map<string,bufferptr> xattr;
	38	bufferlist omap_header;
	39	map<string,bufferlist> omap;
	40
	41	typedef boost::intrusive_ptr<Object> Ref;
	42	friend void intrusive_ptr_add_ref(Object *o) { o->get(); }
	43	friend void intrusive_ptr_release(Object *o) { o->put(); }
	44
	45	Object() : RefCountedObject(nullptr, 0) {}
	46	// interface for object data
	47	virtual size_t get_size() const = 0;
	48	virtual int read(uint64_t offset, uint64_t len, bufferlist &bl) = 0;
	49	virtual int write(uint64_t offset, const bufferlist &bl) = 0;
	50	virtual int clone(Object *src, uint64_t srcoff, uint64_t len,
	51	uint64_t dstoff) = 0;
	52	virtual int truncate(uint64_t offset) = 0;
	53	virtual void encode(bufferlist& bl) const = 0;
	54	virtual void decode(bufferlist::iterator& p) = 0;
	55
	56	void encode_base(bufferlist& bl) const {
	57	::encode(xattr, bl);
	58	::encode(omap_header, bl);
	59	::encode(omap, bl);
	60	}
	61	void decode_base(bufferlist::iterator& p) {
	62	::decode(xattr, p);
	63	::decode(omap_header, p);
	64	::decode(omap, p);
65	}
66
67	void dump(Formatter *f) const {
68	f->dump_int("data_len", get_size());
69	f->dump_int("omap_header_len", omap_header.length());
70
71	f->open_array_section("xattrs");
72	for (map<string,bufferptr>::const_iterator p = xattr.begin();
73	p != xattr.end();
74	++p) {
75	f->open_object_section("xattr");
76	f->dump_string("name", p->first);
77	f->dump_int("length", p->second.length());
78	f->close_section();
79	}
80	f->close_section();
81
82	f->open_array_section("omap");
83	for (map<string,bufferlist>::const_iterator p = omap.begin();
84	p != omap.end();
85	++p) {
86	f->open_object_section("pair");
87	f->dump_string("key", p->first);
88	f->dump_int("length", p->second.length());
89	f->close_section();
90	}
91	f->close_section();
92	}
93	};
94	typedef Object::Ref ObjectRef;
95
96	struct PageSetObject;
97	struct Collection : public CollectionImpl {
98	coll_t cid;
99	int bits;
100	CephContext *cct;
101	bool use_page_set;
102	ceph::unordered_map<ghobject_t, ObjectRef> object_hash; ///< for lookup
103	map<ghobject_t, ObjectRef> object_map; ///< for iteration
104	map<string,bufferptr> xattr;
105	RWLock lock; ///< for object_{map,hash}
106	bool exists;
107
108	typedef boost::intrusive_ptr<Collection> Ref;
109	friend void intrusive_ptr_add_ref(Collection *c) { c->get(); }
110	friend void intrusive_ptr_release(Collection *c) { c->put(); }
111
112	const coll_t &get_cid() override {
113	return cid;
114	}
115
116	ObjectRef create_object() const;
117
118	// NOTE: The lock only needs to protect the object_map/hash, not the
119	// contents of individual objects. The osd is already sequencing
120	// reads and writes, so we will never see them concurrently at this
121	// level.
122
123	ObjectRef get_object(ghobject_t oid) {
124	RWLock::RLocker l(lock);
125	auto o = object_hash.find(oid);
126	if (o == object_hash.end())
127	return ObjectRef();
128	return o->second;
129	}
130
131	ObjectRef get_or_create_object(ghobject_t oid) {
132	RWLock::WLocker l(lock);
133	auto result = object_hash.emplace(oid, ObjectRef());
134	if (result.second)
135	object_map[oid] = result.first->second = create_object();
136	return result.first->second;
137	}
138
139	void encode(bufferlist& bl) const {
140	ENCODE_START(1, 1, bl);
141	::encode(xattr, bl);
142	::encode(use_page_set, bl);
143	uint32_t s = object_map.size();
144	::encode(s, bl);
145	for (map<ghobject_t, ObjectRef>::const_iterator p = object_map.begin();
146	p != object_map.end();
147	++p) {
148	::encode(p->first, bl);
149	p->second->encode(bl);
150	}
151	ENCODE_FINISH(bl);
152	}
153	void decode(bufferlist::iterator& p) {
154	DECODE_START(1, p);
155	::decode(xattr, p);
156	::decode(use_page_set, p);
157	uint32_t s;
158	::decode(s, p);
159	while (s--) {
160	ghobject_t k;
161	::decode(k, p);
162	auto o = create_object();
163	o->decode(p);
164	object_map.insert(make_pair(k, o));
165	object_hash.insert(make_pair(k, o));
166	}
167	DECODE_FINISH(p);
168	}
169
170	uint64_t used_bytes() const {
171	uint64_t result = 0;
172	for (map<ghobject_t, ObjectRef>::const_iterator p = object_map.begin();
173	p != object_map.end();
174	++p) {
175	result += p->second->get_size();
176	}
177
178	return result;
179	}
180
181	explicit Collection(CephContext *cct, coll_t c)
182	: cid(c),
183	cct(cct),
184	use_page_set(cct->_conf->memstore_page_set),
185	lock("MemStore::Collection::lock", true, false),
186	exists(true) {}
187	};
188	typedef Collection::Ref CollectionRef;
189
190	private:
191	class OmapIteratorImpl;
192
193
194	ceph::unordered_map<coll_t, CollectionRef> coll_map;
195	RWLock coll_lock; ///< rwlock to protect coll_map
196
197	CollectionRef get_collection(const coll_t& cid);
198
199	Finisher finisher;
200
201	uint64_t used_bytes;
202
203	void _do_transaction(Transaction& t);
204
205	int _touch(const coll_t& cid, const ghobject_t& oid);
206	int _write(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len,
207	const bufferlist& bl, uint32_t fadvise_flags = 0);
208	int _zero(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len);
209	int _truncate(const coll_t& cid, const ghobject_t& oid, uint64_t size);
210	int _remove(const coll_t& cid, const ghobject_t& oid);
211	int _setattrs(const coll_t& cid, const ghobject_t& oid, map<string,bufferptr>& aset);
212	int _rmattr(const coll_t& cid, const ghobject_t& oid, const char *name);
213	int _rmattrs(const coll_t& cid, const ghobject_t& oid);
214	int _clone(const coll_t& cid, const ghobject_t& oldoid, const ghobject_t& newoid);
215	int _clone_range(const coll_t& cid, const ghobject_t& oldoid,
216	const ghobject_t& newoid,
217	uint64_t srcoff, uint64_t len, uint64_t dstoff);
218	int _omap_clear(const coll_t& cid, const ghobject_t &oid);
219	int _omap_setkeys(const coll_t& cid, const ghobject_t &oid, bufferlist& aset_bl);
220	int _omap_rmkeys(const coll_t& cid, const ghobject_t &oid, bufferlist& keys_bl);
221	int _omap_rmkeyrange(const coll_t& cid, const ghobject_t &oid,
222	const string& first, const string& last);
223	int _omap_setheader(const coll_t& cid, const ghobject_t &oid, const bufferlist &bl);
224
225	int _collection_hint_expected_num_objs(const coll_t& cid, uint32_t pg_num,
226	uint64_t num_objs) const { return 0; }
227	int _create_collection(const coll_t& c, int bits);
228	int _destroy_collection(const coll_t& c);
229	int _collection_add(const coll_t& cid, const coll_t& ocid, const ghobject_t& oid);
230	int _collection_move_rename(const coll_t& oldcid, const ghobject_t& oldoid,
231	coll_t cid, const ghobject_t& o);
232	int _split_collection(const coll_t& cid, uint32_t bits, uint32_t rem, coll_t dest);
233
234	int _save();
235	int _load();
236
237	void dump(Formatter *f);
238	void dump_all();
239
240	public:
241	MemStore(CephContext *cct, const string& path)
242	: ObjectStore(cct, path),
243	coll_lock("MemStore::coll_lock"),
244	finisher(cct),
245	used_bytes(0) {}
246	~MemStore() override { }
247
248	string get_type() override {
249	return "memstore";
250	}
251
252	bool test_mount_in_use() override {
253	return false;
254	}
255
256	int mount() override;
257	int umount() override;
258
259	int fsck(bool deep) override {
260	return 0;
261	}
262
263	int validate_hobject_key(const hobject_t &obj) const override {
264	return 0;
265	}
266	unsigned get_max_attr_name_length() override {
267	return 256; // arbitrary; there is no real limit internally
268	}
269
270	int mkfs() override;
271	int mkjournal() override {
272	return 0;
273	}
274	bool wants_journal() override {
275	return false;
276	}
277	bool allows_journal() override {
278	return false;
279	}
280	bool needs_journal() override {
281	return false;
282	}
283
284	int statfs(struct store_statfs_t *buf) override;
285
286	bool exists(const coll_t& cid, const ghobject_t& oid) override;
287	bool exists(CollectionHandle &c, const ghobject_t& oid) override;
288	int stat(const coll_t& cid, const ghobject_t& oid,
289	struct stat *st, bool allow_eio = false) override;
290	int stat(CollectionHandle &c, const ghobject_t& oid,
291	struct stat *st, bool allow_eio = false) override;
292	int set_collection_opts(
293	const coll_t& cid,
294	const pool_opts_t& opts) override;
295	int read(
296	const coll_t& cid,
297	const ghobject_t& oid,
298	uint64_t offset,
299	size_t len,
300	bufferlist& bl,
224ce89b	301	uint32_t op_flags = 0) override;
7c673cae FG	302	int read(
	303	CollectionHandle &c,
	304	const ghobject_t& oid,
	305	uint64_t offset,
	306	size_t len,
	307	bufferlist& bl,
224ce89b	308	uint32_t op_flags = 0) override;
7c673cae FG	309	using ObjectStore::fiemap;
	310	int fiemap(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len, bufferlist& bl) override;
	311	int fiemap(const coll_t& cid, const ghobject_t& oid, uint64_t offset, size_t len, map<uint64_t, uint64_t>& destmap) override;
	312	int getattr(const coll_t& cid, const ghobject_t& oid, const char *name,
	313	bufferptr& value) override;
	314	int getattr(CollectionHandle &c, const ghobject_t& oid, const char *name,
	315	bufferptr& value) override;
	316	int getattrs(const coll_t& cid, const ghobject_t& oid,
	317	map<string,bufferptr>& aset) override;
	318	int getattrs(CollectionHandle &c, const ghobject_t& oid,
	319	map<string,bufferptr>& aset) override;
	320
	321	int list_collections(vector<coll_t>& ls) override;
	322
	323	CollectionHandle open_collection(const coll_t& c) override {
	324	return get_collection(c);
	325	}
	326	bool collection_exists(const coll_t& c) override;
	327	int collection_empty(const coll_t& c, bool *empty) override;
	328	int collection_bits(const coll_t& c) override;
	329	using ObjectStore::collection_list;
	330	int collection_list(const coll_t& cid,
	331	const ghobject_t& start, const ghobject_t& end, int max,
	332	vector<ghobject_t> ls, ghobject_t next) override;
	333
	334	using ObjectStore::omap_get;
	335	int omap_get(
	336	const coll_t& cid, ///< [in] Collection containing oid
	337	const ghobject_t &oid, ///< [in] Object containing omap
	338	bufferlist *header, ///< [out] omap header
	339	map<string, bufferlist> *out /// < [out] Key to value map
	340	) override;
	341
	342	using ObjectStore::omap_get_header;
	343	/// Get omap header
	344	int omap_get_header(
	345	const coll_t& cid, ///< [in] Collection containing oid
	346	const ghobject_t &oid, ///< [in] Object containing omap
	347	bufferlist *header, ///< [out] omap header
	348	bool allow_eio = false ///< [in] don't assert on eio
	349	) override;
	350
	351	using ObjectStore::omap_get_keys;
	352	/// Get keys defined on oid
	353	int omap_get_keys(
	354	const coll_t& cid, ///< [in] Collection containing oid
	355	const ghobject_t &oid, ///< [in] Object containing omap
	356	set<string> *keys ///< [out] Keys defined on oid
	357	) override;
	358
	359	using ObjectStore::omap_get_values;
	360	/// Get key values
	361	int omap_get_values(
	362	const coll_t& cid, ///< [in] Collection containing oid
	363	const ghobject_t &oid, ///< [in] Object containing omap
	364	const set<string> &keys, ///< [in] Keys to get
	365	map<string, bufferlist> *out ///< [out] Returned keys and values
	366	) override;
	367
	368	using ObjectStore::omap_check_keys;
	369	/// Filters keys into out which are defined on oid
	370	int omap_check_keys(
	371	const coll_t& cid, ///< [in] Collection containing oid
	372	const ghobject_t &oid, ///< [in] Object containing omap
373	const set<string> &keys, ///< [in] Keys to check
374	set<string> *out ///< [out] Subset of keys defined on oid
375	) override;
376
377	using ObjectStore::get_omap_iterator;
378	ObjectMap::ObjectMapIterator get_omap_iterator(
379	const coll_t& cid, ///< [in] collection
380	const ghobject_t &oid ///< [in] object
381	) override;
382
383	void set_fsid(uuid_d u) override;
384	uuid_d get_fsid() override;
385
386	uint64_t estimate_objects_overhead(uint64_t num_objects) override {
387	return 0; //do not care
388	}
389
390	objectstore_perf_stat_t get_cur_stats() override;
391
392	const PerfCounters* get_perf_counters() const override {
393	return nullptr;
394	}
395
396
397	int queue_transactions(
398	Sequencer *osr, vector<Transaction>& tls,
399	TrackedOpRef op = TrackedOpRef(),
400	ThreadPool::TPHandle *handle = NULL) override;
401	};
402
403
404
405
406	#endif