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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/**
* 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 <string>
#include "mongo/base/disallow_copying.h"
#include "mongo/base/string_data.h"
#include "mongo/db/jsobj.h"
namespace mongo {
/**
* This class represents the layout and contents of documents contained in the
* config.actionlog collection. All manipulation of documents coming from that
* collection should be done with this class.
*
* Usage Example:
*
* // Contact the config. 'conn' has been obtained before.
* DBClientBase* conn;
* BSONObj query = QUERY(ActionLogType::exampleField("exampleFieldName"));
* exampleDoc = conn->findOne(ActionLogType::ConfigNS, query);
*
* // Process the response.
* ActionLogType exampleType;
* std::string errMsg;
* if (!exampleType.parseBSON(exampleDoc, &errMsg) || !exampleType.isValid(&errMsg)) {
* // Can't use 'exampleType'. Take action.
* }
* // use 'exampleType'
*
*/
class ActionLogType {
MONGO_DISALLOW_COPYING(ActionLogType);
public:
//
// schema declarations
//
// Name of the actionlog collection in the config server.
static const std::string ConfigNS;
// Field names and types in the actionlog collection type.
static const BSONField<std::string> server;
static const BSONField<std::string> what;
static const BSONField<Date_t> time;
static const BSONField<BSONObj> details;
// Common field names included under details
static const BSONField<int> candidateChunks;
static const BSONField<int> chunksMoved;
static const BSONField<bool> didError;
static const BSONField<long long> executionTimeMicros;
static const BSONField<std::string> errmsg;
//
// actionlog type methods
//
ActionLogType();
~ActionLogType();
/**
* Returns true if all the mandatory fields are present and have valid
* representations. Otherwise returns false and fills in the optional 'errMsg' string.
*/
bool isValid(std::string* errMsg) const;
/**
* Returns the BSON representation of the entry.
*/
BSONObj toBSON() const;
void buildDetails();
/**
* Clears and populates the internal state using the 'source' BSON object if the
* latter contains valid values. Otherwise sets errMsg and returns false.
*/
bool parseBSON(const BSONObj& source, std::string* errMsg);
/**
* Clears the internal state.
*/
void clear();
/**
* Copies all the fields present in 'this' to 'other'.
*/
void cloneTo(ActionLogType* other) const;
/**
* Returns a std::string representation of the current internal state.
*/
std::string toString() const;
//
// individual field accessors
//
void setServer(const StringData& server) {
_server = server.toString();
_isServerSet = true;
}
void unsetServer() { _isServerSet = false; }
bool isServerSet() const { return _isServerSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const std::string& getServer() const {
dassert(_isServerSet);
return _what;
}
void setWhat(const StringData& what) {
_what = what.toString();
_isWhatSet = true;
}
void unsetWhat() { _isWhatSet = false; }
bool isWhatSet() const { return _isWhatSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const std::string& getWhat() const {
dassert(_isWhatSet);
return _what;
}
void setTime(const Date_t time) {
_time = time;
_isTimeSet = true;
}
void unsetTime() { _isTimeSet = false; }
bool isTimeSet() const { return _isTimeSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const Date_t getTime() const {
dassert(_isTimeSet);
return _time;
}
void setDetails(const BSONObj& details) {
_details = details.getOwned();
_isDetailsSet = true;
}
void unsetDetails() { _isDetailsSet = false; }
bool isDetailsSet() const { return _isDetailsSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const BSONObj getDetails() const {
dassert(_isDetailsSet);
return _details;
}
private:
// Convention: (M)andatory, (O)ptional, (S)pecial rule.
std::string _server; // (M) hostname of server that we are making the change on.
// Does not include port.
bool _isServerSet;
std::string _what; // (M) what the action being performed was.
bool _isWhatSet;
Date_t _time; // (M) time this change was made
bool _isTimeSet;
BSONObj _details; // (M) A BSONObj containing extra information about some operations
bool _isDetailsSet;
};
} // namespace mongo
|