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
|
/**
* Copyright (C) 2015 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/client/read_preference.h"
#include "mongo/db/jsobj.h"
#include "mongo/unittest/unittest.h"
namespace {
using namespace mongo;
void checkParse(const BSONObj& rpsObj, const ReadPreferenceSetting& expected) {
const auto swRps = ReadPreferenceSetting::fromBSON(rpsObj);
ASSERT_OK(swRps.getStatus());
const auto rps = swRps.getValue();
ASSERT_TRUE(rps.equals(expected));
}
TEST(ReadPreferenceSetting, ParseValid) {
checkParse(BSON("mode" << "primary"),
ReadPreferenceSetting(ReadPreference::PrimaryOnly,
TagSet::primaryOnly()));
// Check that primary with wildcard tags is accepted for backwards compatibility, but
// that the tags are parsed as the empty TagSet.
checkParse(BSON("mode" << "primary" <<
"tags" << BSON_ARRAY(BSONObj())),
ReadPreferenceSetting(ReadPreference::PrimaryOnly,
TagSet::primaryOnly()));
checkParse(BSON("mode" << "secondaryPreferred" <<
"tags" << BSON_ARRAY(BSON("dc" << "ny"))),
ReadPreferenceSetting(ReadPreference::SecondaryPreferred,
TagSet(BSON_ARRAY(BSON("dc" << "ny")))));
}
void checkParseFails(const BSONObj& rpsObj) {
auto swRps = ReadPreferenceSetting::fromBSON(rpsObj);
ASSERT_NOT_OK(swRps.getStatus());
}
TEST(ReadPreferenceSetting, ParseInvalid) {
// mode primary can not have tags
checkParseFails(BSON("mode" << "primary" <<
"tags" << BSON_ARRAY(BSON("foo" << "bar"))));
// bad mode
checkParseFails(BSON("mode" << "khalesi"));
// no mode
checkParseFails(BSON("foo" << "bar"));
// tags not an array
checkParseFails(BSON("mode" << "nearest" <<
"tags" << "bad"));
}
void checkRoundtrip(const ReadPreferenceSetting& rps) {
auto parsed = ReadPreferenceSetting::fromBSON(rps.toBSON());
ASSERT_OK(parsed.getStatus());
ASSERT_TRUE(parsed.getValue().equals(rps));
}
TEST(ReadPreferenceSetting, Roundtrip) {
checkRoundtrip(ReadPreferenceSetting(ReadPreference::Nearest,
TagSet(BSON_ARRAY(BSON("dc" << "ca") <<
BSON("foo" << "bar")))));
checkRoundtrip(ReadPreferenceSetting());
checkRoundtrip(ReadPreferenceSetting(ReadPreference::PrimaryPreferred,
TagSet()));
checkRoundtrip(ReadPreferenceSetting(ReadPreference::SecondaryOnly,
TagSet(BSON_ARRAY(BSON("dc" << "ca" <<
"rack" << "bar")))));
}
} // namespace
|