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
|
// lasterror.h
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "../bson/oid.h"
namespace mongo {
class BSONObjBuilder;
class Message;
struct LastError {
int code;
string msg;
enum UpdatedExistingType { NotUpdate, True, False } updatedExisting;
OID upsertedId;
OID writebackId;
long long nObjects;
int nPrev;
bool valid;
bool disabled;
void writeback( OID& oid ) {
reset( true );
writebackId = oid;
}
void raiseError(int _code , const char *_msg) {
reset( true );
code = _code;
msg = _msg;
}
void recordUpdate( bool _updateObjects , long long _nObjects , OID _upsertedId ) {
reset( true );
nObjects = _nObjects;
updatedExisting = _updateObjects ? True : False;
if ( _upsertedId.isSet() )
upsertedId = _upsertedId;
}
void recordDelete( long long nDeleted ) {
reset( true );
nObjects = nDeleted;
}
LastError() {
reset();
}
void reset( bool _valid = false ) {
code = 0;
msg.clear();
updatedExisting = NotUpdate;
nObjects = 0;
nPrev = 1;
valid = _valid;
disabled = false;
upsertedId.clear();
writebackId.clear();
}
/**
* @return if there is an err
*/
bool appendSelf( BSONObjBuilder &b , bool blankErr = true );
struct Disabled : boost::noncopyable {
Disabled( LastError * le ) {
_le = le;
if ( _le ) {
_prev = _le->disabled;
_le->disabled = true;
}
else {
_prev = false;
}
}
~Disabled() {
if ( _le )
_le->disabled = _prev;
}
LastError * _le;
bool _prev;
};
static LastError noError;
};
extern class LastErrorHolder {
public:
LastErrorHolder(){}
~LastErrorHolder();
LastError * get( bool create = false );
LastError * getSafe() {
LastError * le = get(false);
if ( ! le ) {
error() << " no LastError!" << endl;
assert( le );
}
return le;
}
LastError * _get( bool create = false ); // may return a disabled LastError
void reset( LastError * le );
/** ok to call more than once. */
void initThread();
int getID();
void release();
/** when db receives a message/request, call this */
LastError * startRequest( Message& m , LastError * connectionOwned );
void disconnect( int clientId );
// used to disable lastError reporting while processing a killCursors message
// disable causes get() to return 0.
LastError *disableForCommand(); // only call once per command invocation!
private:
boost::thread_specific_ptr<LastError> _tl;
struct Status {
time_t time;
LastError *lerr;
};
} lastError;
void raiseError(int code , const char *msg);
} // namespace mongo
|
