1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
// -*- 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) 2004-2006 Sage Weil <sage@newdream.net>
*
* 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 OS_KEYVALUESTORE_H
#define OS_KEYVALUESTORE_H
#include "IndexManager.h"
#include "SequencerPosition.h"
#include <string>
#include <vector>
#include <tr1/memory>
/**
* Encapsulates the FileStore key value store
*
* Implementations of this interface will be used to implement TMAP
*/
class ObjectMap {
public:
/// Set keys and values from specified map
virtual int set_keys(
const ghobject_t &oid, ///< [in] object containing map
const map<string, bufferlist> &set, ///< [in] key to value map to set
const SequencerPosition *spos=0 ///< [in] sequencer position
) = 0;
/// Set header
virtual int set_header(
const ghobject_t &oid, ///< [in] object containing map
const bufferlist &bl, ///< [in] header to set
const SequencerPosition *spos=0 ///< [in] sequencer position
) = 0;
/// Retrieve header
virtual int get_header(
const ghobject_t &oid, ///< [in] object containing map
bufferlist *bl ///< [out] header to set
) = 0;
/// Clear all map keys and values from oid
virtual int clear(
const ghobject_t &oid, ///< [in] object containing map
const SequencerPosition *spos=0 ///< [in] sequencer position
) = 0;
/// Clear all map keys and values from oid
virtual int rm_keys(
const ghobject_t &oid, ///< [in] object containing map
const set<string> &to_clear, ///< [in] Keys to clear
const SequencerPosition *spos=0 ///< [in] sequencer position
) = 0;
/// Get all keys and values
virtual int get(
const ghobject_t &oid, ///< [in] object containing map
bufferlist *header, ///< [out] Returned Header
map<string, bufferlist> *out ///< [out] Returned keys and values
) = 0;
/// Get values for supplied keys
virtual int get_keys(
const ghobject_t &oid, ///< [in] object containing map
set<string> *keys ///< [out] Keys defined on oid
) = 0;
/// Get values for supplied keys
virtual int get_values(
const ghobject_t &oid, ///< [in] object containing map
const set<string> &keys, ///< [in] Keys to get
map<string, bufferlist> *out ///< [out] Returned keys and values
) = 0;
/// Check key existence
virtual int check_keys(
const ghobject_t &oid, ///< [in] object containing map
const set<string> &keys, ///< [in] Keys to check
set<string> *out ///< [out] Subset of keys defined on oid
) = 0;
/// Get xattrs
virtual int get_xattrs(
const ghobject_t &oid, ///< [in] object
const set<string> &to_get, ///< [in] keys to get
map<string, bufferlist> *out ///< [out] subset of attrs/vals defined
) = 0;
/// Get all xattrs
virtual int get_all_xattrs(
const ghobject_t &oid, ///< [in] object
set<string> *out ///< [out] attrs and values
) = 0;
/// set xattrs in to_set
virtual int set_xattrs(
const ghobject_t &oid, ///< [in] object
const map<string, bufferlist> &to_set,///< [in] attrs/values to set
const SequencerPosition *spos=0 ///< [in] sequencer position
) = 0;
/// remove xattrs in to_remove
virtual int remove_xattrs(
const ghobject_t &oid, ///< [in] object
const set<string> &to_remove, ///< [in] attrs to remove
const SequencerPosition *spos=0 ///< [in] sequencer position
) = 0;
/// Clone keys efficiently from oid map to target map
virtual int clone(
const ghobject_t &oid, ///< [in] object containing map
const ghobject_t &target, ///< [in] target of clone
const SequencerPosition *spos=0 ///< [in] sequencer position
) { return 0; }
/// Ensure all previous writes are durable
virtual int sync(
const ghobject_t *oid=0, ///< [in] object
const SequencerPosition *spos=0 ///< [in] Sequencer
) { return 0; }
virtual bool check(std::ostream &out) { return true; }
class ObjectMapIteratorImpl {
public:
virtual int seek_to_first() = 0;
virtual int upper_bound(const string &after) = 0;
virtual int lower_bound(const string &to) = 0;
virtual bool valid() = 0;
virtual int next() = 0;
virtual string key() = 0;
virtual bufferlist value() = 0;
virtual int status() = 0;
virtual ~ObjectMapIteratorImpl() {}
};
typedef std::tr1::shared_ptr<ObjectMapIteratorImpl> ObjectMapIterator;
virtual ObjectMapIterator get_iterator(const ghobject_t &oid) {
return ObjectMapIterator();
}
virtual ~ObjectMap() {}
};
#endif
|
