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
|
/*
* Copyright (C) 2013 10gen 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 <string>
/*
* This file defines the storage for options that come from the command line related to data file
* persistence. Many executables that can access data files directly such as mongod and certain
* tools use these variables, but each executable may have a different set of command line flags
* that allow the user to change a different subset of these options.
*/
namespace mongo {
struct StorageGlobalParams {
// Default data directory for mongod when running in non-config server mode.
static const char* kDefaultDbPath;
// Default data directory for mongod when running as the config database of
// a sharded cluster.
static const char* kDefaultConfigDbPath;
StorageGlobalParams() :
engine("wiredTiger"),
engineSetByUser(false),
dbpath(kDefaultDbPath),
upgrade(false),
repair(false),
noTableScan(false),
directoryperdb(false),
syncdelay(60.0) {
dur = false;
if (sizeof(void*) == 8)
dur = true;
}
// --storageEngine
// storage engine for this instance of mongod.
std::string engine;
// True if --storageEngine was passed on the command line, and false otherwise.
bool engineSetByUser;
// The directory where the mongod instance stores its data.
std::string dbpath;
// --upgrade
// Upgrades the on-disk data format of the files specified by the --dbpath to the
// latest version, if needed.
bool upgrade;
// --repair
// Runs a repair routine on all databases. This is equivalent to shutting down and
// running the repairDatabase database command on all databases.
bool repair;
// --repairpath
// Specifies the root directory containing MongoDB data files to use for the --repair
// operation.
// Default: A _tmp directory within the path specified by the dbPath option.
std::string repairpath;
bool dur; // --dur durability (now --journal)
// --notablescan
// no table scans allowed
bool noTableScan;
// --directoryperdb
// Stores each database’s files in its own folder in the data directory.
// When applied to an existing system, the directoryPerDB option alters
// the storage pattern of the data directory.
bool directoryperdb;
// --syncdelay
// Controls how much time can pass before MongoDB flushes data to the data files
// via an fsync operation.
// Do not set this value on production systems.
// In almost every situation, you should use the default setting.
double syncdelay; // seconds between fsyncs
};
extern StorageGlobalParams storageGlobalParams;
} // namespace mongo
|
