summaryrefslogtreecommitdiff
path: root/src/mongo/db/range_deleter_test.cpp
blob: 29034535e442c0025abb5c50a83e7356d2250634 (plain)
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
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
/**
 *    Copyright (C) 2013 10gen 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 <string>

#include "mongo/db/field_parser.h"
#include "mongo/db/range_deleter.h"
#include "mongo/db/range_deleter_mock_env.h"
#include "mongo/db/repl/repl_settings.h"
#include "mongo/db/repl/replication_coordinator_mock.h"
#include "mongo/db/service_context.h"
#include "mongo/db/write_concern_options.h"
#include "mongo/stdx/functional.h"
#include "mongo/stdx/future.h"
#include "mongo/stdx/thread.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/scopeguard.h"

namespace mongo {
namespace {

using std::string;

OperationContext* const noTxn = NULL;  // MockEnv doesn't need txn XXX SERVER-13931

// Capped sleep interval is 640 mSec, Nyquist frequency is 1280 mSec => round up to 2 sec.
const int MAX_IMMEDIATE_DELETE_WAIT_SECS = 2;

const mongo::repl::ReplSettings replSettings;

// Should not be able to queue deletes if deleter workers were not started.
TEST(QueueDelete, CantAfterStop) {
    RangeDeleterMockEnv* env = new RangeDeleterMockEnv();
    RangeDeleter deleter(env);

    std::unique_ptr<mongo::repl::ReplicationCoordinatorMock> mock(
        new mongo::repl::ReplicationCoordinatorMock(replSettings));

    mongo::repl::ReplicationCoordinator::set(mongo::getGlobalServiceContext(), std::move(mock));

    deleter.startWorkers();
    deleter.stopWorkers();

    string errMsg;
    ASSERT_FALSE(
        deleter.queueDelete(noTxn,
                            RangeDeleterOptions(KeyRange(
                                "test.user", BSON("x" << 120), BSON("x" << 200), BSON("x" << 1))),
                            NULL /* notifier not needed */,
                            &errMsg));
    ASSERT_FALSE(errMsg.empty());
    ASSERT_FALSE(env->deleteOccured());
}

// Should not start delete if the set of cursors that were open when the
// delete was queued is still open.
TEST(QueuedDelete, ShouldWaitCursor) {
    const string ns("test.user");

    RangeDeleterMockEnv* env = new RangeDeleterMockEnv();
    RangeDeleter deleter(env);

    std::unique_ptr<mongo::repl::ReplicationCoordinatorMock> mock(
        new mongo::repl::ReplicationCoordinatorMock(replSettings));

    mongo::repl::ReplicationCoordinator::set(mongo::getGlobalServiceContext(), std::move(mock));

    deleter.startWorkers();

    env->addCursorId(ns, 345);

    Notification notifyDone;
    RangeDeleterOptions deleterOptions(
        KeyRange(ns, BSON("x" << 0), BSON("x" << 10), BSON("x" << 1)));
    deleterOptions.waitForOpenCursors = true;

    ASSERT_TRUE(
        deleter.queueDelete(noTxn, deleterOptions, &notifyDone, NULL /* errMsg not needed */));

    env->waitForNthGetCursor(1u);

    ASSERT_EQUALS(1U, deleter.getPendingDeletes());
    ASSERT_FALSE(env->deleteOccured());

    // Set the open cursors to a totally different sets of cursorIDs.
    env->addCursorId(ns, 200);
    env->removeCursorId(ns, 345);

    notifyDone.waitToBeNotified();

    ASSERT_TRUE(env->deleteOccured());
    const DeletedRange deletedChunk(env->getLastDelete());

    ASSERT_EQUALS(ns, deletedChunk.ns);
    ASSERT_TRUE(deletedChunk.min.equal(BSON("x" << 0)));
    ASSERT_TRUE(deletedChunk.max.equal(BSON("x" << 10)));

    deleter.stopWorkers();
}

// Should terminate when stop is requested.
TEST(QueuedDelete, StopWhileWaitingCursor) {
    const string ns("test.user");

    RangeDeleterMockEnv* env = new RangeDeleterMockEnv();
    RangeDeleter deleter(env);

    std::unique_ptr<mongo::repl::ReplicationCoordinatorMock> mock(
        new mongo::repl::ReplicationCoordinatorMock(replSettings));

    mongo::repl::ReplicationCoordinator::set(mongo::getGlobalServiceContext(), std::move(mock));

    deleter.startWorkers();

    env->addCursorId(ns, 345);

    Notification notifyDone;
    RangeDeleterOptions deleterOptions(
        KeyRange(ns, BSON("x" << 0), BSON("x" << 10), BSON("x" << 1)));
    deleterOptions.waitForOpenCursors = true;
    ASSERT_TRUE(
        deleter.queueDelete(noTxn, deleterOptions, &notifyDone, NULL /* errMsg not needed */));


    env->waitForNthGetCursor(1u);

    deleter.stopWorkers();
    ASSERT_FALSE(env->deleteOccured());
}

// Should not start delete if the set of cursors that were open when the
// deleteNow method is called is still open.
TEST(ImmediateDelete, ShouldWaitCursor) {
    const string ns("test.user");

    RangeDeleterMockEnv* env = new RangeDeleterMockEnv();
    RangeDeleter deleter(env);

    std::unique_ptr<mongo::repl::ReplicationCoordinatorMock> mock(
        new mongo::repl::ReplicationCoordinatorMock(replSettings));

    mongo::repl::ReplicationCoordinator::set(mongo::getGlobalServiceContext(), std::move(mock));

    deleter.startWorkers();

    env->addCursorId(ns, 345);

    string errMsg;
    RangeDeleterOptions deleterOption(
        KeyRange(ns, BSON("x" << 0), BSON("x" << 10), BSON("x" << 1)));
    deleterOption.waitForOpenCursors = true;

    // VS2013 Doesn't support future<void>, so fake it with a bool.
    stdx::packaged_task<bool()> deleterTask([&] {
        deleter.deleteNow(noTxn, deleterOption, &errMsg);
        return true;
    });
    stdx::future<bool> deleterFuture = deleterTask.get_future();
    stdx::thread deleterThread(std::move(deleterTask));

    auto guard = MakeGuard([&] {
        deleter.stopWorkers();
        deleterThread.join();
    });

    env->waitForNthGetCursor(1u);

    // Note: immediate deletes has no pending state, it goes directly to inProgress
    // even while waiting for cursors.
    ASSERT_EQUALS(1U, deleter.getDeletesInProgress());

    ASSERT_FALSE(env->deleteOccured());

    // Set the open cursors to a totally different sets of cursorIDs.
    env->addCursorId(ns, 200);
    env->removeCursorId(ns, 345);

    ASSERT_TRUE(stdx::future_status::ready ==
                deleterFuture.wait_for(stdx::chrono::seconds(MAX_IMMEDIATE_DELETE_WAIT_SECS)));

    ASSERT_TRUE(env->deleteOccured());
    const DeletedRange deletedChunk(env->getLastDelete());

    ASSERT_EQUALS(ns, deletedChunk.ns);
    ASSERT_TRUE(deletedChunk.min.equal(BSON("x" << 0)));
    ASSERT_TRUE(deletedChunk.max.equal(BSON("x" << 10)));
    ASSERT_TRUE(deletedChunk.shardKeyPattern.equal(BSON("x" << 1)));
}

// Should terminate when stop is requested.
TEST(ImmediateDelete, StopWhileWaitingCursor) {
    const string ns("test.user");

    RangeDeleterMockEnv* env = new RangeDeleterMockEnv();
    RangeDeleter deleter(env);

    std::unique_ptr<mongo::repl::ReplicationCoordinatorMock> mock(
        new mongo::repl::ReplicationCoordinatorMock(replSettings));

    mongo::repl::ReplicationCoordinator::set(mongo::getGlobalServiceContext(), std::move(mock));

    deleter.startWorkers();

    env->addCursorId(ns, 345);

    string errMsg;
    RangeDeleterOptions deleterOption(
        KeyRange(ns, BSON("x" << 0), BSON("x" << 10), BSON("x" << 1)));
    deleterOption.waitForOpenCursors = true;

    // VS2013 Doesn't support future<void>, so fake it with a bool.
    stdx::packaged_task<bool()> deleterTask([&] {
        deleter.deleteNow(noTxn, deleterOption, &errMsg);
        return true;
    });
    stdx::future<bool> deleterFuture = deleterTask.get_future();
    stdx::thread deleterThread(std::move(deleterTask));

    auto join_thread_guard = MakeGuard([&] { deleterThread.join(); });
    auto stop_deleter_guard = MakeGuard([&] { deleter.stopWorkers(); });

    env->waitForNthGetCursor(1u);

    // Note: immediate deletes has no pending state, it goes directly to inProgress
    // even while waiting for cursors.
    ASSERT_EQUALS(1U, deleter.getDeletesInProgress());

    ASSERT_FALSE(env->deleteOccured());

    stop_deleter_guard.Execute();

    ASSERT_TRUE(stdx::future_status::ready ==
                deleterFuture.wait_for(stdx::chrono::seconds(MAX_IMMEDIATE_DELETE_WAIT_SECS)));

    ASSERT_FALSE(env->deleteOccured());
}

// Tests the interaction of multiple deletes queued with different states.
// Starts by adding a new delete task, waits for the worker to work on it,
// and then adds 2 more task, one of which is ready to be deleted, while the
// other one is waiting for an open cursor. The test then makes sure that the
// deletes are performed in the right order.
TEST(MixedDeletes, MultipleDeletes) {
    const string blockedNS("foo.bar");
    const string ns("test.user");

    RangeDeleterMockEnv* env = new RangeDeleterMockEnv();
    RangeDeleter deleter(env);

    std::unique_ptr<mongo::repl::ReplicationCoordinatorMock> mock(
        new mongo::repl::ReplicationCoordinatorMock(replSettings));

    mongo::repl::ReplicationCoordinator::set(mongo::getGlobalServiceContext(), std::move(mock));

    deleter.startWorkers();

    env->addCursorId(blockedNS, 345);
    env->pauseDeletes();

    Notification notifyDone1;
    RangeDeleterOptions deleterOption1(
        KeyRange(ns, BSON("x" << 10), BSON("x" << 20), BSON("x" << 1)));
    deleterOption1.waitForOpenCursors = true;
    ASSERT_TRUE(
        deleter.queueDelete(noTxn, deleterOption1, &notifyDone1, NULL /* don't care errMsg */));

    env->waitForNthPausedDelete(1u);

    // Make sure that the delete is already in progress before proceeding.
    ASSERT_EQUALS(1U, deleter.getDeletesInProgress());

    Notification notifyDone2;
    RangeDeleterOptions deleterOption2(
        KeyRange(blockedNS, BSON("x" << 20), BSON("x" << 30), BSON("x" << 1)));
    deleterOption2.waitForOpenCursors = true;
    ASSERT_TRUE(
        deleter.queueDelete(noTxn, deleterOption2, &notifyDone2, NULL /* don't care errMsg */));

    Notification notifyDone3;
    RangeDeleterOptions deleterOption3(
        KeyRange(ns, BSON("x" << 30), BSON("x" << 40), BSON("x" << 1)));
    deleterOption3.waitForOpenCursors = true;
    ASSERT_TRUE(
        deleter.queueDelete(noTxn, deleterOption3, &notifyDone3, NULL /* don't care errMsg */));

    // Now, the setup is:
    // { x: 10 } => { x: 20 } in progress.
    // { x: 20 } => { x: 30 } waiting for cursor id 345.
    // { x: 30 } => { x: 40 } waiting to be picked up by worker.

    // Make sure that the current state matches the setup.
    ASSERT_EQUALS(3U, deleter.getTotalDeletes());
    ASSERT_EQUALS(2U, deleter.getPendingDeletes());
    ASSERT_EQUALS(1U, deleter.getDeletesInProgress());

    // Let the first delete proceed.
    env->resumeOneDelete();
    notifyDone1.waitToBeNotified();

    ASSERT_TRUE(env->deleteOccured());

    // { x: 10 } => { x: 20 } should be the first one since it is already in
    // progress before the others are queued.
    DeletedRange deleted1(env->getLastDelete());

    ASSERT_EQUALS(ns, deleted1.ns);
    ASSERT_TRUE(deleted1.min.equal(BSON("x" << 10)));
    ASSERT_TRUE(deleted1.max.equal(BSON("x" << 20)));
    ASSERT_TRUE(deleted1.shardKeyPattern.equal(BSON("x" << 1)));

    // Let the second delete proceed.
    env->resumeOneDelete();
    notifyDone3.waitToBeNotified();

    DeletedRange deleted2(env->getLastDelete());

    // { x: 30 } => { x: 40 } should be next since there are still
    // cursors open for blockedNS.

    ASSERT_EQUALS(ns, deleted2.ns);
    ASSERT_TRUE(deleted2.min.equal(BSON("x" << 30)));
    ASSERT_TRUE(deleted2.max.equal(BSON("x" << 40)));
    ASSERT_TRUE(deleted2.shardKeyPattern.equal(BSON("x" << 1)));

    env->removeCursorId(blockedNS, 345);
    // Let the last delete proceed.
    env->resumeOneDelete();
    notifyDone2.waitToBeNotified();

    DeletedRange deleted3(env->getLastDelete());

    ASSERT_EQUALS(blockedNS, deleted3.ns);
    ASSERT_TRUE(deleted3.min.equal(BSON("x" << 20)));
    ASSERT_TRUE(deleted3.max.equal(BSON("x" << 30)));
    ASSERT_TRUE(deleted3.shardKeyPattern.equal(BSON("x" << 1)));

    deleter.stopWorkers();
}

}  // unnamed namespace
}  // namespace mongo