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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
// wiredtiger_kv_engine.h
/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <set>
#include <string>
#include <wiredtiger.h>
#include "mongo/bson/ordering.h"
#include "mongo/db/storage/kv/kv_engine.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_session_cache.h"
#include "mongo/stdx/mutex.h"
#include "mongo/util/elapsed_tracker.h"
namespace mongo {
class WiredTigerSessionCache;
class WiredTigerSizeStorer;
class WiredTigerKVEngine final : public KVEngine {
public:
WiredTigerKVEngine(const std::string& canonicalName,
const std::string& path,
const std::string& extraOpenOptions,
size_t cacheSizeGB,
bool durable,
bool ephemeral,
bool repair);
virtual ~WiredTigerKVEngine();
void setRecordStoreExtraOptions(const std::string& options);
void setSortedDataInterfaceExtraOptions(const std::string& options);
virtual bool supportsDocLocking() const;
virtual bool supportsDirectoryPerDB() const;
virtual bool isDurable() const {
return _durable;
}
virtual bool isEphemeral() {
return _ephemeral;
}
virtual RecoveryUnit* newRecoveryUnit();
virtual Status createRecordStore(OperationContext* opCtx,
StringData ns,
StringData ident,
const CollectionOptions& options);
virtual RecordStore* getRecordStore(OperationContext* opCtx,
StringData ns,
StringData ident,
const CollectionOptions& options);
virtual Status createSortedDataInterface(OperationContext* opCtx,
StringData ident,
const IndexDescriptor* desc);
virtual SortedDataInterface* getSortedDataInterface(OperationContext* opCtx,
StringData ident,
const IndexDescriptor* desc);
virtual Status dropIdent(OperationContext* opCtx, StringData ident);
virtual Status okToRename(OperationContext* opCtx,
StringData fromNS,
StringData toNS,
StringData ident,
const RecordStore* originalRecordStore) const;
virtual int flushAllFiles(bool sync);
virtual Status beginBackup(OperationContext* txn);
virtual void endBackup(OperationContext* txn);
virtual int64_t getIdentSize(OperationContext* opCtx, StringData ident);
virtual Status repairIdent(OperationContext* opCtx, StringData ident);
virtual bool hasIdent(OperationContext* opCtx, StringData ident) const;
std::vector<std::string> getAllIdents(OperationContext* opCtx) const;
virtual void cleanShutdown();
SnapshotManager* getSnapshotManager() const final {
return &_sessionCache->snapshotManager();
}
// wiredtiger specific
// Calls WT_CONNECTION::reconfigure on the underlying WT_CONNECTION
// held by this class
int reconfigure(const char* str);
WT_CONNECTION* getConnection() {
return _conn;
}
void dropAllQueued();
bool haveDropsQueued() const;
void syncSizeInfo(bool sync) const;
/**
* Initializes a background job to remove excess documents in the oplog collections.
* This applies to the capped collections in the local.oplog.* namespaces (specifically
* local.oplog.rs for replica sets and local.oplog.$main for master/slave replication).
* Returns true if a background job is running for the namespace.
*/
static bool initRsOplogBackgroundThread(StringData ns);
static void appendGlobalStats(BSONObjBuilder& b);
private:
class WiredTigerJournalFlusher;
Status _salvageIfNeeded(const char* uri);
void _checkIdentPath(StringData ident);
bool _hasUri(WT_SESSION* session, const std::string& uri) const;
std::string _uri(StringData ident) const;
bool _drop(StringData ident);
WT_CONNECTION* _conn;
WT_EVENT_HANDLER _eventHandler;
std::unique_ptr<WiredTigerSessionCache> _sessionCache;
std::string _canonicalName;
std::string _path;
bool _durable;
bool _ephemeral;
std::unique_ptr<WiredTigerJournalFlusher> _journalFlusher;
std::string _rsOptions;
std::string _indexOptions;
std::set<std::string> _identToDrop;
mutable stdx::mutex _identToDropMutex;
std::unique_ptr<WiredTigerSizeStorer> _sizeStorer;
std::string _sizeStorerUri;
mutable ElapsedTracker _sizeStorerSyncTracker;
mutable Date_t _previousCheckedDropsQueued;
std::unique_ptr<WiredTigerSession> _backupSession;
};
}
|
