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
|
/**
* 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 "mongo/client/dbclientinterface.h"
#include "mongo/db/dbmessage.h"
#include "mongo/db/lasterror.h"
#include "mongo/util/net/hostandport.h"
namespace mongo {
class OperationContext;
/**
* Embedded calls to the local server using the DBClientBase API without going over the network.
*
* Caller does not need to lock, that is handled within.
*
* All operations are performed within the scope of a passed-in OperationContext (except when
* using the deprecated constructor). You must ensure that the OperationContext is valid when
* calling into any function. If you ever need to change the OperationContext, that can be done
* without the overhead of creating a new DBDirectClient by calling setOpCtx(), after which all
* operations will use the new OperationContext.
*/
class DBDirectClient : public DBClientBase {
public:
DBDirectClient(OperationContext* opCtx);
using DBClientBase::query;
// XXX: is this valid or useful?
void setOpCtx(OperationContext* opCtx);
virtual std::unique_ptr<DBClientCursor> query(const std::string& ns,
Query query,
int nToReturn = 0,
int nToSkip = 0,
const BSONObj* fieldsToReturn = 0,
int queryOptions = 0,
int batchSize = 0);
virtual bool isFailed() const;
virtual bool isStillConnected();
virtual std::string toString() const;
virtual std::string getServerAddress() const;
virtual bool call(Message& toSend,
Message& response,
bool assertOk = true,
std::string* actualServer = 0);
virtual void say(Message& toSend, bool isRetry = false, std::string* actualServer = 0);
virtual unsigned long long count(const std::string& ns,
const BSONObj& query = BSONObj(),
int options = 0,
int limit = 0,
int skip = 0);
virtual ConnectionString::ConnectionType type() const;
double getSoTimeout() const;
virtual bool lazySupported() const;
virtual QueryOptions _lookupAvailableOptions();
int getMinWireVersion() final;
int getMaxWireVersion() final;
bool isReplicaSetMember() const final;
bool isMongos() const final {
return false;
}
private:
OperationContext* _opCtx;
LastError _lastError; // This LastError will be used for all operations on this client.
};
} // namespace mongo
|
