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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 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> | |
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 | #include <ctype.h> | |
15 | #include <sstream> | |
16 | #include "include/memory.h" | |
17 | #include "ObjectStore.h" | |
18 | #include "common/Formatter.h" | |
19 | #include "common/safe_io.h" | |
20 | ||
21 | #include "filestore/FileStore.h" | |
22 | #include "memstore/MemStore.h" | |
23 | #if defined(HAVE_LIBAIO) | |
24 | #include "bluestore/BlueStore.h" | |
25 | #endif | |
26 | #include "kstore/KStore.h" | |
27 | ||
28 | void decode_str_str_map_to_bl(bufferlist::iterator& p, | |
29 | bufferlist *out) | |
30 | { | |
31 | bufferlist::iterator start = p; | |
32 | __u32 n; | |
33 | ::decode(n, p); | |
34 | unsigned len = 4; | |
35 | while (n--) { | |
36 | __u32 l; | |
37 | ::decode(l, p); | |
38 | p.advance(l); | |
39 | len += 4 + l; | |
40 | ::decode(l, p); | |
41 | p.advance(l); | |
42 | len += 4 + l; | |
43 | } | |
44 | start.copy(len, *out); | |
45 | } | |
46 | ||
47 | void decode_str_set_to_bl(bufferlist::iterator& p, | |
48 | bufferlist *out) | |
49 | { | |
50 | bufferlist::iterator start = p; | |
51 | __u32 n; | |
52 | ::decode(n, p); | |
53 | unsigned len = 4; | |
54 | while (n--) { | |
55 | __u32 l; | |
56 | ::decode(l, p); | |
57 | p.advance(l); | |
58 | len += 4 + l; | |
59 | } | |
60 | start.copy(len, *out); | |
61 | } | |
62 | ||
63 | ObjectStore *ObjectStore::create(CephContext *cct, | |
64 | const string& type, | |
65 | const string& data, | |
66 | const string& journal, | |
67 | osflagbits_t flags) | |
68 | { | |
69 | if (type == "filestore") { | |
70 | return new FileStore(cct, data, journal, flags); | |
71 | } | |
72 | if (type == "memstore") { | |
73 | return new MemStore(cct, data); | |
74 | } | |
75 | #if defined(HAVE_LIBAIO) | |
31f18b77 | 76 | if (type == "bluestore") { |
7c673cae FG |
77 | return new BlueStore(cct, data); |
78 | } | |
31f18b77 | 79 | if (type == "random") { |
7c673cae FG |
80 | if (rand() % 2) { |
81 | return new FileStore(cct, data, journal, flags); | |
82 | } else { | |
83 | return new BlueStore(cct, data); | |
84 | } | |
85 | } | |
86 | #else | |
87 | if (type == "random") { | |
88 | return new FileStore(cct, data, journal, flags); | |
89 | } | |
90 | #endif | |
91 | if (type == "kstore" && | |
92 | cct->check_experimental_feature_enabled("kstore")) { | |
93 | return new KStore(cct, data); | |
94 | } | |
95 | return NULL; | |
96 | } | |
97 | ||
98 | int ObjectStore::probe_block_device_fsid( | |
99 | CephContext *cct, | |
100 | const string& path, | |
101 | uuid_d *fsid) | |
102 | { | |
103 | int r; | |
104 | ||
105 | #if defined(HAVE_LIBAIO) | |
106 | // first try bluestore -- it has a crc on its header and will fail | |
107 | // reliably. | |
108 | r = BlueStore::get_block_device_fsid(cct, path, fsid); | |
109 | if (r == 0) { | |
110 | lgeneric_dout(cct, 0) << __func__ << " " << path << " is bluestore, " | |
111 | << *fsid << dendl; | |
112 | return r; | |
113 | } | |
114 | #endif | |
115 | ||
116 | // okay, try FileStore (journal). | |
117 | r = FileStore::get_block_device_fsid(cct, path, fsid); | |
118 | if (r == 0) { | |
119 | lgeneric_dout(cct, 0) << __func__ << " " << path << " is filestore, " | |
120 | << *fsid << dendl; | |
121 | return r; | |
122 | } | |
123 | ||
124 | return -EINVAL; | |
125 | } | |
126 | ||
127 | int ObjectStore::write_meta(const std::string& key, | |
128 | const std::string& value) | |
129 | { | |
130 | string v = value; | |
131 | v += "\n"; | |
132 | int r = safe_write_file(path.c_str(), key.c_str(), | |
133 | v.c_str(), v.length()); | |
134 | if (r < 0) | |
135 | return r; | |
136 | return 0; | |
137 | } | |
138 | ||
139 | int ObjectStore::read_meta(const std::string& key, | |
140 | std::string *value) | |
141 | { | |
142 | char buf[4096]; | |
143 | int r = safe_read_file(path.c_str(), key.c_str(), | |
144 | buf, sizeof(buf)); | |
145 | if (r <= 0) | |
146 | return r; | |
147 | // drop trailing newlines | |
148 | while (r && isspace(buf[r-1])) { | |
149 | --r; | |
150 | } | |
151 | *value = string(buf, r); | |
152 | return 0; | |
153 | } | |
154 | ||
155 | ||
156 | ||
157 | ||
158 | ostream& operator<<(ostream& out, const ObjectStore::Sequencer& s) | |
159 | { | |
160 | return out << "osr(" << s.get_name() << " " << &s << ")"; | |
161 | } | |
162 | ||
163 | ostream& operator<<(ostream& out, const ObjectStore::Transaction& tx) { | |
164 | ||
165 | return out << "Transaction(" << &tx << ")"; | |
166 | } | |
167 | ||
168 | unsigned ObjectStore::apply_transactions(Sequencer *osr, | |
169 | vector<Transaction>& tls, | |
170 | Context *ondisk) | |
171 | { | |
172 | // use op pool | |
173 | Cond my_cond; | |
174 | Mutex my_lock("ObjectStore::apply_transaction::my_lock"); | |
175 | int r = 0; | |
176 | bool done; | |
177 | C_SafeCond *onreadable = new C_SafeCond(&my_lock, &my_cond, &done, &r); | |
178 | ||
179 | queue_transactions(osr, tls, onreadable, ondisk); | |
180 | ||
181 | my_lock.Lock(); | |
182 | while (!done) | |
183 | my_cond.Wait(my_lock); | |
184 | my_lock.Unlock(); | |
185 | return r; | |
186 | } | |
187 | ||
188 | int ObjectStore::queue_transactions( | |
189 | Sequencer *osr, | |
190 | vector<Transaction>& tls, | |
191 | Context *onreadable, | |
192 | Context *oncommit, | |
193 | Context *onreadable_sync, | |
194 | Context *oncomplete, | |
195 | TrackedOpRef op = TrackedOpRef()) | |
196 | { | |
197 | RunOnDeleteRef _complete (std::make_shared<RunOnDelete>(oncomplete)); | |
198 | Context *_onreadable = new Wrapper<RunOnDeleteRef>( | |
199 | onreadable, _complete); | |
200 | Context *_oncommit = new Wrapper<RunOnDeleteRef>( | |
201 | oncommit, _complete); | |
202 | return queue_transactions(osr, tls, _onreadable, _oncommit, | |
203 | onreadable_sync, op); | |
204 | } |