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
|
/**
* Copyright (C) 2019-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/map_reduce_agg.h"
#include "mongo/db/commands/map_reduce_command_base.h"
#include "mongo/db/commands/mr.h"
#include "mongo/db/commands/test_commands_enabled.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/query/find_common.h"
#include "mongo/db/query/query_knobs_gen.h"
namespace mongo {
namespace {
/**
* This class represents a map/reduce command executed on a single server.
*/
class MapReduceCommand : public MapReduceCommandBase {
public:
MapReduceCommand() = default;
AllowedOnSecondary secondaryAllowed(ServiceContext* serviceContext) const override {
if (repl::ReplicationCoordinator::get(serviceContext)->getReplicationMode() !=
repl::ReplicationCoordinator::modeReplSet) {
return AllowedOnSecondary::kAlways;
}
return AllowedOnSecondary::kOptIn;
}
std::size_t reserveBytesForReply() const override {
return FindCommon::kInitReplyBufferSize;
}
private:
bool _runImpl(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmd,
std::string& errmsg,
BSONObjBuilder& result) final {
if (getTestCommandsEnabled() && internalQueryUseAggMapReduce.load()) {
return map_reduce_agg::runAggregationMapReduce(opCtx, dbname, cmd, errmsg, result);
}
return mr::runMapReduce(opCtx, dbname, cmd, errmsg, result);
}
} mapReduceCommand;
} // namespace
} // namespace mongo
|
