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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/**
* Copyright (C) 2016 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 <boost/intrusive_ptr.hpp>
#include <vector>
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/json.h"
#include "mongo/db/pipeline/aggregation_context_fixture.h"
#include "mongo/db/pipeline/document.h"
#include "mongo/db/pipeline/document_source_change_notification.h"
#include "mongo/db/pipeline/document_source_limit.h"
#include "mongo/db/pipeline/document_source_match.h"
#include "mongo/db/pipeline/document_source_mock.h"
#include "mongo/db/pipeline/document_source_sort.h"
#include "mongo/db/pipeline/document_value_test_util.h"
#include "mongo/db/pipeline/value.h"
#include "mongo/db/pipeline/value_comparator.h"
#include "mongo/db/repl/oplog_entry.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
namespace {
using std::vector;
using std::string;
using boost::intrusive_ptr;
using repl::OplogEntry;
using repl::OpTypeEnum;
using D = Document;
using V = Value;
static const Timestamp ts(100, 1);
static const repl::OpTime optime(ts, 1);
static const NamespaceString nss("unittests.change_notification");
class ChangeNotificationStageTest : public AggregationContextFixture {
public:
ChangeNotificationStageTest() : AggregationContextFixture(nss) {}
void checkTransformation(const OplogEntry& entry, const boost::optional<Document> expectedDoc) {
const auto spec = fromjson("{$changeNotification: {}}");
vector<intrusive_ptr<DocumentSource>> result =
DocumentSourceChangeNotification::createFromBson(spec.firstElement(), getExpCtx());
auto match = dynamic_cast<DocumentSourceMatch*>(result[0].get());
ASSERT(match);
auto mock = DocumentSourceMock::create(D(entry.toBSON()));
match->setSource(mock.get());
// Check the oplog entry is transformed correctly.
auto transform = result.back().get();
ASSERT(transform);
ASSERT_EQ(string(transform->getSourceName()), "$changeNotification");
transform->setSource(match);
auto next = transform->getNext();
// Match stage should pass the doc down if expectedDoc is given.
ASSERT_EQ(next.isAdvanced(), static_cast<bool>(expectedDoc));
if (expectedDoc) {
ASSERT_DOCUMENT_EQ(next.releaseDocument(), *expectedDoc);
}
}
OplogEntry createCommand(const BSONObj& oField) {
return OplogEntry(optime, 1, OpTypeEnum::kCommand, nss.getCommandNS(), oField);
}
};
TEST_F(ChangeNotificationStageTest, StagesGeneratedCorrectly) {
const auto spec = fromjson("{$changeNotification: {}}");
vector<intrusive_ptr<DocumentSource>> result =
DocumentSourceChangeNotification::createFromBson(spec.firstElement(), getExpCtx());
ASSERT_EQUALS(result.size(), 2UL);
ASSERT_TRUE(dynamic_cast<DocumentSourceMatch*>(result[0].get()));
ASSERT_EQUALS(string(result[0]->getSourceName()), "$changeNotification");
ASSERT_EQUALS(string(result[1]->getSourceName()), "$changeNotification");
// TODO: Check explain result.
}
TEST_F(ChangeNotificationStageTest, TransformInsert) {
OplogEntry insert(optime, 1, OpTypeEnum::kInsert, nss, BSON("_id" << 1 << "x" << 1));
// Insert
Document expectedInsert{
{"_id", D{{"ts", ts}, {"ns", nss.ns()}, {"_id", 1}}},
{"operationType", "insert"_sd},
{"ns", D{{"db", nss.db()}, {"coll", nss.coll()}}},
{"documentKey", D{{"_id", 1}}},
{"newDocument", D{{"_id", 1}, {"x", 1}}},
};
checkTransformation(insert, expectedInsert);
}
TEST_F(ChangeNotificationStageTest, TransformUpdateFields) {
OplogEntry updateField(
optime, 1, OpTypeEnum::kUpdate, nss, BSON("$set" << BSON("y" << 1)), BSON("_id" << 1));
// Update fields
Document expectedUpdateField{
{"_id", D{{"ts", ts}, {"ns", nss.ns()}, {"_id", 1}}},
{"operationType", "update"_sd},
{"ns", D{{"db", nss.db()}, {"coll", nss.coll()}}},
{"documentKey", D{{"_id", 1}}},
{
"updateDescription", D{{"updatedFields", D{{"y", 1}}}, {"removedFields", vector<V>()}},
}};
checkTransformation(updateField, expectedUpdateField);
}
TEST_F(ChangeNotificationStageTest, TransformRemoveFields) {
OplogEntry removeField(
optime, 1, OpTypeEnum::kUpdate, nss, BSON("$unset" << BSON("y" << 1)), BSON("_id" << 1));
// Remove fields
Document expectedRemoveField{
{"_id", D{{"ts", ts}, {"ns", nss.ns()}, {"_id", 1}}},
{"operationType", "update"_sd},
{"ns", D{{"db", nss.db()}, {"coll", nss.coll()}}},
{"documentKey", D{{"_id", 1}}},
{
"updateDescription", D{{"updatedFields", D{}}, {"removedFields", vector<V>{V("y"_sd)}}},
}};
checkTransformation(removeField, expectedRemoveField);
}
TEST_F(ChangeNotificationStageTest, TransformReplace) {
OplogEntry replace(
optime, 1, OpTypeEnum::kUpdate, nss, BSON("_id" << 1 << "y" << 1), BSON("_id" << 1));
// Replace
Document expectedReplace{
{"_id", D{{"ts", ts}, {"ns", nss.ns()}, {"_id", 1}}},
{"operationType", "replace"_sd},
{"ns", D{{"db", nss.db()}, {"coll", nss.coll()}}},
{"documentKey", D{{"_id", 1}}},
{"newDocument", D{{"_id", 1}, {"y", 1}}},
};
checkTransformation(replace, expectedReplace);
}
TEST_F(ChangeNotificationStageTest, TransformDelete) {
OplogEntry deleteEntry(optime, 1, OpTypeEnum::kDelete, nss, BSON("_id" << 1));
// Delete
Document expectedDelete{
{"_id", D{{"ts", ts}, {"ns", nss.ns()}, {"_id", 1}}},
{"operationType", "delete"_sd},
{"ns", D{{"db", nss.db()}, {"coll", nss.coll()}}},
{"documentKey", D{{"_id", 1}}},
};
checkTransformation(deleteEntry, expectedDelete);
}
TEST_F(ChangeNotificationStageTest, TransformInvalidate) {
NamespaceString otherColl("test.bar");
OplogEntry dropColl = createCommand(BSON("drop" << nss.coll()));
OplogEntry dropDB = createCommand(BSON("dropDatabase" << 1));
OplogEntry rename =
createCommand(BSON("renameCollection" << nss.ns() << "to" << otherColl.ns()));
// Invalidate entry includes $cmd namespace in _id and doesn't have a document id.
Document expectedInvalidate{
{"_id", D{{"ts", ts}, {"ns", nss.getCommandNS().ns()}}}, {"operationType", "invalidate"_sd},
};
for (auto& entry : {dropColl, dropDB, rename}) {
checkTransformation(entry, expectedInvalidate);
}
}
TEST_F(ChangeNotificationStageTest, TransformInvalidateRenameDropTarget) {
// renameCollection command with dropTarget: true has the namespace of the "from" database.
NamespaceString otherColl("test.bar");
OplogEntry rename(optime,
1,
OpTypeEnum::kCommand,
otherColl.getCommandNS(),
BSON("renameCollection" << otherColl.ns() << "to" << nss.ns()));
Document expectedInvalidate{
{"_id", D{{"ts", ts}, {"ns", otherColl.getCommandNS().ns()}}},
{"operationType", "invalidate"_sd},
};
checkTransformation(rename, expectedInvalidate);
}
TEST_F(ChangeNotificationStageTest, MatchFiltersCreateCollection) {
auto collSpec =
D{{"create", "foo"_sd},
{"idIndex", D{{"v", 2}, {"key", D{{"_id", 1}}}, {"name", "_id_"_sd}, {"ns", nss.ns()}}}};
OplogEntry createColl = createCommand(collSpec.toBson());
checkTransformation(createColl, boost::none);
}
TEST_F(ChangeNotificationStageTest, MatchFiltersNoOp) {
OplogEntry noOp(
optime, 1, OpTypeEnum::kNoop, NamespaceString(), fromjson("{'msg':'new primary'}"));
checkTransformation(noOp, boost::none);
}
TEST_F(ChangeNotificationStageTest, MatchFiltersCreateIndex) {
auto indexSpec = D{{"v", 2}, {"key", D{{"a", 1}}}, {"name", "a_1"_sd}, {"ns", nss.ns()}};
NamespaceString indexNs(nss.getSystemIndexesCollection());
OplogEntry createIndex(optime, 1, OpTypeEnum::kInsert, indexNs, indexSpec.toBson());
checkTransformation(createIndex, boost::none);
}
} // namespace
} // namespace mongo
|
