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
|
/**
* Copyright (C) 2018-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/client/dbclient_mockcursor.h"
#include "mongo/client/dbclient_cursor.h"
#include "mongo/util/fail_point.h"
namespace mongo {
MONGO_FAIL_POINT_DEFINE(mockCursorThrowErrorOnGetMore);
DBClientMockCursor::DBClientMockCursor(mongo::DBClientBase* client,
const BSONArray& mockCollection,
const bool provideResumeToken,
unsigned long batchSize)
: mongo::DBClientCursor(client, NamespaceString(), 0, 0, 0),
_collectionArray(mockCollection),
_iter(_collectionArray),
_provideResumeToken(provideResumeToken),
_batchSize(batchSize) {
if (_batchSize)
setBatchSize(_batchSize);
_fillNextBatch();
}
bool DBClientMockCursor::more() {
// Throw if requested via failpoint.
mockCursorThrowErrorOnGetMore.execute([&](const BSONObj& data) {
auto errorString = data["errorType"].valueStringDataSafe();
auto errorCode = ErrorCodes::fromString(errorString);
std::string message = str::stream()
<< "mockCursorThrowErrorOnGetMore throwing error for test: " << errorString;
uasserted(errorCode, message);
});
if (_batchSize && batch.pos == _batchSize) {
_fillNextBatch();
}
return batch.pos < batch.objs.size();
}
void DBClientMockCursor::_fillNextBatch() {
int leftInBatch = _batchSize;
batch.objs.clear();
while (_iter.more() && (!_batchSize || leftInBatch--)) {
batch.objs.emplace_back(_iter.next().Obj().getOwned());
}
batch.pos = 0;
// Store a mock resume token, if applicable.
if (!batch.objs.empty()) {
auto lastId = batch.objs.back()["_id"].numberInt();
_postBatchResumeToken = BSON("n" << lastId);
}
}
boost::optional<BSONObj> DBClientMockCursor::getPostBatchResumeToken() const {
if (!_provideResumeToken) {
return boost::none;
}
return _postBatchResumeToken;
}
} // namespace mongo
|
