summaryrefslogtreecommitdiffstats
path: root/src/rocksdb/utilities/checkpoint/checkpoint_test.cc
blob: 3da753d5f3ba4b6fe460b7c2ef4390d3f3a779b3 (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
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.

// Syncpoint prevents us building and running tests in release
#ifndef ROCKSDB_LITE
#include "rocksdb/utilities/checkpoint.h"

#ifndef OS_WIN
#include <unistd.h>
#endif
#include <iostream>
#include <thread>
#include <utility>

#include "db/db_impl/db_impl.h"
#include "file/file_util.h"
#include "port/port.h"
#include "port/stack_trace.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/utilities/transaction_db.h"
#include "test_util/sync_point.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "utilities/fault_injection_env.h"
#include "utilities/fault_injection_fs.h"

namespace ROCKSDB_NAMESPACE {
class CheckpointTest : public testing::Test {
 protected:
  // Sequence of option configurations to try
  enum OptionConfig {
    kDefault = 0,
  };
  int option_config_;

 public:
  std::string dbname_;
  std::string alternative_wal_dir_;
  Env* env_;
  DB* db_;
  Options last_options_;
  std::vector<ColumnFamilyHandle*> handles_;
  std::string snapshot_name_;
  std::string export_path_;
  ColumnFamilyHandle* cfh_reverse_comp_;
  ExportImportFilesMetaData* metadata_;

  CheckpointTest() : env_(Env::Default()) {
    env_->SetBackgroundThreads(1, Env::LOW);
    env_->SetBackgroundThreads(1, Env::HIGH);
    dbname_ = test::PerThreadDBPath(env_, "checkpoint_test");
    alternative_wal_dir_ = dbname_ + "/wal";
    auto options = CurrentOptions();
    auto delete_options = options;
    delete_options.wal_dir = alternative_wal_dir_;
    EXPECT_OK(DestroyDB(dbname_, delete_options));
    // Destroy it for not alternative WAL dir is used.
    EXPECT_OK(DestroyDB(dbname_, options));
    db_ = nullptr;
    snapshot_name_ = test::PerThreadDBPath(env_, "snapshot");
    std::string snapshot_tmp_name = snapshot_name_ + ".tmp";
    EXPECT_OK(DestroyDB(snapshot_name_, options));
    test::DeleteDir(env_, snapshot_name_);
    EXPECT_OK(DestroyDB(snapshot_tmp_name, options));
    test::DeleteDir(env_, snapshot_tmp_name);
    Reopen(options);
    export_path_ = test::PerThreadDBPath("/export");
    DestroyDir(env_, export_path_).PermitUncheckedError();
    cfh_reverse_comp_ = nullptr;
    metadata_ = nullptr;
  }

  ~CheckpointTest() override {
    ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
    ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({});
    ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
    if (cfh_reverse_comp_) {
      EXPECT_OK(db_->DestroyColumnFamilyHandle(cfh_reverse_comp_));
      cfh_reverse_comp_ = nullptr;
    }
    if (metadata_) {
      delete metadata_;
      metadata_ = nullptr;
    }
    Close();
    Options options;
    options.db_paths.emplace_back(dbname_, 0);
    options.db_paths.emplace_back(dbname_ + "_2", 0);
    options.db_paths.emplace_back(dbname_ + "_3", 0);
    options.db_paths.emplace_back(dbname_ + "_4", 0);
    EXPECT_OK(DestroyDB(dbname_, options));
    EXPECT_OK(DestroyDB(snapshot_name_, options));
    DestroyDir(env_, export_path_).PermitUncheckedError();
  }

  // Return the current option configuration.
  Options CurrentOptions() {
    Options options;
    options.env = env_;
    options.create_if_missing = true;
    return options;
  }

  void CreateColumnFamilies(const std::vector<std::string>& cfs,
                            const Options& options) {
    ColumnFamilyOptions cf_opts(options);
    size_t cfi = handles_.size();
    handles_.resize(cfi + cfs.size());
    for (auto cf : cfs) {
      ASSERT_OK(db_->CreateColumnFamily(cf_opts, cf, &handles_[cfi++]));
    }
  }

  void CreateAndReopenWithCF(const std::vector<std::string>& cfs,
                             const Options& options) {
    CreateColumnFamilies(cfs, options);
    std::vector<std::string> cfs_plus_default = cfs;
    cfs_plus_default.insert(cfs_plus_default.begin(), kDefaultColumnFamilyName);
    ReopenWithColumnFamilies(cfs_plus_default, options);
  }

  void ReopenWithColumnFamilies(const std::vector<std::string>& cfs,
                                const std::vector<Options>& options) {
    ASSERT_OK(TryReopenWithColumnFamilies(cfs, options));
  }

  void ReopenWithColumnFamilies(const std::vector<std::string>& cfs,
                                const Options& options) {
    ASSERT_OK(TryReopenWithColumnFamilies(cfs, options));
  }

  Status TryReopenWithColumnFamilies(const std::vector<std::string>& cfs,
                                     const std::vector<Options>& options) {
    Close();
    EXPECT_EQ(cfs.size(), options.size());
    std::vector<ColumnFamilyDescriptor> column_families;
    for (size_t i = 0; i < cfs.size(); ++i) {
      column_families.push_back(ColumnFamilyDescriptor(cfs[i], options[i]));
    }
    DBOptions db_opts = DBOptions(options[0]);
    return DB::Open(db_opts, dbname_, column_families, &handles_, &db_);
  }

  Status TryReopenWithColumnFamilies(const std::vector<std::string>& cfs,
                                     const Options& options) {
    Close();
    std::vector<Options> v_opts(cfs.size(), options);
    return TryReopenWithColumnFamilies(cfs, v_opts);
  }

  void Reopen(const Options& options) { ASSERT_OK(TryReopen(options)); }

  void CompactAll() {
    for (auto h : handles_) {
      ASSERT_OK(db_->CompactRange(CompactRangeOptions(), h, nullptr, nullptr));
    }
  }

  void Close() {
    for (auto h : handles_) {
      delete h;
    }
    handles_.clear();
    delete db_;
    db_ = nullptr;
  }

  void DestroyAndReopen(const Options& options) {
    // Destroy using last options
    Destroy(last_options_);
    ASSERT_OK(TryReopen(options));
  }

  void Destroy(const Options& options) {
    Close();
    ASSERT_OK(DestroyDB(dbname_, options));
  }

  Status ReadOnlyReopen(const Options& options) {
    return DB::OpenForReadOnly(options, dbname_, &db_);
  }

  Status ReadOnlyReopenWithColumnFamilies(const std::vector<std::string>& cfs,
                                          const Options& options) {
    std::vector<ColumnFamilyDescriptor> column_families;
    for (const auto& cf : cfs) {
      column_families.emplace_back(cf, options);
    }
    return DB::OpenForReadOnly(options, dbname_, column_families, &handles_,
                               &db_);
  }

  Status TryReopen(const Options& options) {
    Close();
    last_options_ = options;
    return DB::Open(options, dbname_, &db_);
  }

  Status Flush(int cf = 0) {
    if (cf == 0) {
      return db_->Flush(FlushOptions());
    } else {
      return db_->Flush(FlushOptions(), handles_[cf]);
    }
  }

  Status Put(const Slice& k, const Slice& v, WriteOptions wo = WriteOptions()) {
    return db_->Put(wo, k, v);
  }

  Status Put(int cf, const Slice& k, const Slice& v,
             WriteOptions wo = WriteOptions()) {
    return db_->Put(wo, handles_[cf], k, v);
  }

  Status Delete(const std::string& k) { return db_->Delete(WriteOptions(), k); }

  Status Delete(int cf, const std::string& k) {
    return db_->Delete(WriteOptions(), handles_[cf], k);
  }

  std::string Get(const std::string& k, const Snapshot* snapshot = nullptr) {
    ReadOptions options;
    options.verify_checksums = true;
    options.snapshot = snapshot;
    std::string result;
    Status s = db_->Get(options, k, &result);
    if (s.IsNotFound()) {
      result = "NOT_FOUND";
    } else if (!s.ok()) {
      result = s.ToString();
    }
    return result;
  }

  std::string Get(int cf, const std::string& k,
                  const Snapshot* snapshot = nullptr) {
    ReadOptions options;
    options.verify_checksums = true;
    options.snapshot = snapshot;
    std::string result;
    Status s = db_->Get(options, handles_[cf], k, &result);
    if (s.IsNotFound()) {
      result = "NOT_FOUND";
    } else if (!s.ok()) {
      result = s.ToString();
    }
    return result;
  }
};

TEST_F(CheckpointTest, GetSnapshotLink) {
  for (uint64_t log_size_for_flush : {0, 1000000}) {
    Options options;
    DB* snapshotDB;
    ReadOptions roptions;
    std::string result;
    Checkpoint* checkpoint;

    options = CurrentOptions();
    delete db_;
    db_ = nullptr;
    ASSERT_OK(DestroyDB(dbname_, options));

    // Create a database
    options.create_if_missing = true;
    ASSERT_OK(DB::Open(options, dbname_, &db_));
    std::string key = std::string("foo");
    ASSERT_OK(Put(key, "v1"));
    // Take a snapshot
    ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
    ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_, log_size_for_flush));
    ASSERT_OK(Put(key, "v2"));
    ASSERT_EQ("v2", Get(key));
    ASSERT_OK(Flush());
    ASSERT_EQ("v2", Get(key));
    // Open snapshot and verify contents while DB is running
    options.create_if_missing = false;
    ASSERT_OK(DB::Open(options, snapshot_name_, &snapshotDB));
    ASSERT_OK(snapshotDB->Get(roptions, key, &result));
    ASSERT_EQ("v1", result);
    delete snapshotDB;
    snapshotDB = nullptr;
    delete db_;
    db_ = nullptr;

    // Destroy original DB
    ASSERT_OK(DestroyDB(dbname_, options));

    // Open snapshot and verify contents
    options.create_if_missing = false;
    dbname_ = snapshot_name_;
    ASSERT_OK(DB::Open(options, dbname_, &db_));
    ASSERT_EQ("v1", Get(key));
    delete db_;
    db_ = nullptr;
    ASSERT_OK(DestroyDB(dbname_, options));
    delete checkpoint;

    // Restore DB name
    dbname_ = test::PerThreadDBPath(env_, "db_test");
  }
}

TEST_F(CheckpointTest, CheckpointWithBlob) {
  // Create a database with a blob file
  Options options = CurrentOptions();
  options.create_if_missing = true;
  options.enable_blob_files = true;
  options.min_blob_size = 0;

  Reopen(options);

  constexpr char key[] = "key";
  constexpr char blob[] = "blob";

  ASSERT_OK(Put(key, blob));
  ASSERT_OK(Flush());

  // Create a checkpoint
  Checkpoint* checkpoint = nullptr;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));

  std::unique_ptr<Checkpoint> checkpoint_guard(checkpoint);

  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));

  // Make sure it contains the blob file
  std::vector<std::string> files;
  ASSERT_OK(env_->GetChildren(snapshot_name_, &files));

  bool blob_file_found = false;
  for (const auto& file : files) {
    uint64_t number = 0;
    FileType type = kWalFile;

    if (ParseFileName(file, &number, &type) && type == kBlobFile) {
      blob_file_found = true;
      break;
    }
  }

  ASSERT_TRUE(blob_file_found);

  // Make sure the checkpoint can be opened and the blob value read
  options.create_if_missing = false;
  DB* checkpoint_db = nullptr;
  ASSERT_OK(DB::Open(options, snapshot_name_, &checkpoint_db));

  std::unique_ptr<DB> checkpoint_db_guard(checkpoint_db);

  PinnableSlice value;
  ASSERT_OK(checkpoint_db->Get(
      ReadOptions(), checkpoint_db->DefaultColumnFamily(), key, &value));

  ASSERT_EQ(value, blob);
}

TEST_F(CheckpointTest, ExportColumnFamilyWithLinks) {
  // Create a database
  auto options = CurrentOptions();
  options.create_if_missing = true;
  CreateAndReopenWithCF({}, options);

  // Helper to verify the number of files in metadata and export dir
  auto verify_files_exported = [&](const ExportImportFilesMetaData& metadata,
                                   int num_files_expected) {
    ASSERT_EQ(metadata.files.size(), num_files_expected);
    std::vector<std::string> subchildren;
    ASSERT_OK(env_->GetChildren(export_path_, &subchildren));
    ASSERT_EQ(subchildren.size(), num_files_expected);
  };

  // Test DefaultColumnFamily
  {
    const auto key = std::string("foo");
    ASSERT_OK(Put(key, "v1"));

    Checkpoint* checkpoint;
    ASSERT_OK(Checkpoint::Create(db_, &checkpoint));

    // Export the Tables and verify
    ASSERT_OK(checkpoint->ExportColumnFamily(db_->DefaultColumnFamily(),
                                             export_path_, &metadata_));
    verify_files_exported(*metadata_, 1);
    ASSERT_EQ(metadata_->db_comparator_name, options.comparator->Name());
    ASSERT_OK(DestroyDir(env_, export_path_));
    delete metadata_;
    metadata_ = nullptr;

    // Check again after compaction
    CompactAll();
    ASSERT_OK(Put(key, "v2"));
    ASSERT_OK(checkpoint->ExportColumnFamily(db_->DefaultColumnFamily(),
                                             export_path_, &metadata_));
    verify_files_exported(*metadata_, 2);
    ASSERT_EQ(metadata_->db_comparator_name, options.comparator->Name());
    ASSERT_OK(DestroyDir(env_, export_path_));
    delete metadata_;
    metadata_ = nullptr;
    delete checkpoint;
  }

  // Test non default column family with non default comparator
  {
    auto cf_options = CurrentOptions();
    cf_options.comparator = ReverseBytewiseComparator();
    ASSERT_OK(db_->CreateColumnFamily(cf_options, "yoyo", &cfh_reverse_comp_));

    const auto key = std::string("foo");
    ASSERT_OK(db_->Put(WriteOptions(), cfh_reverse_comp_, key, "v1"));

    Checkpoint* checkpoint;
    ASSERT_OK(Checkpoint::Create(db_, &checkpoint));

    // Export the Tables and verify
    ASSERT_OK(checkpoint->ExportColumnFamily(cfh_reverse_comp_, export_path_,
                                             &metadata_));
    verify_files_exported(*metadata_, 1);
    ASSERT_EQ(metadata_->db_comparator_name,
              ReverseBytewiseComparator()->Name());
    delete checkpoint;
  }
}

TEST_F(CheckpointTest, ExportColumnFamilyNegativeTest) {
  // Create a database
  auto options = CurrentOptions();
  options.create_if_missing = true;
  CreateAndReopenWithCF({}, options);

  const auto key = std::string("foo");
  ASSERT_OK(Put(key, "v1"));

  Checkpoint* checkpoint;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));

  // Export onto existing directory
  ASSERT_OK(env_->CreateDirIfMissing(export_path_));
  ASSERT_EQ(checkpoint->ExportColumnFamily(db_->DefaultColumnFamily(),
                                           export_path_, &metadata_),
            Status::InvalidArgument("Specified export_dir exists"));
  ASSERT_OK(DestroyDir(env_, export_path_));

  // Export with invalid directory specification
  export_path_ = "";
  ASSERT_EQ(checkpoint->ExportColumnFamily(db_->DefaultColumnFamily(),
                                           export_path_, &metadata_),
            Status::InvalidArgument("Specified export_dir invalid"));
  delete checkpoint;
}

TEST_F(CheckpointTest, CheckpointCF) {
  Options options = CurrentOptions();
  CreateAndReopenWithCF({"one", "two", "three", "four", "five"}, options);
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
      {{"CheckpointTest::CheckpointCF:2", "DBImpl::GetLiveFiles:2"},
       {"DBImpl::GetLiveFiles:1", "CheckpointTest::CheckpointCF:1"}});

  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();

  ASSERT_OK(Put(0, "Default", "Default"));
  ASSERT_OK(Put(1, "one", "one"));
  ASSERT_OK(Put(2, "two", "two"));
  ASSERT_OK(Put(3, "three", "three"));
  ASSERT_OK(Put(4, "four", "four"));
  ASSERT_OK(Put(5, "five", "five"));

  DB* snapshotDB;
  ReadOptions roptions;
  std::string result;
  std::vector<ColumnFamilyHandle*> cphandles;

  // Take a snapshot
  ROCKSDB_NAMESPACE::port::Thread t([&]() {
    Checkpoint* checkpoint;
    ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
    ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
    delete checkpoint;
  });
  TEST_SYNC_POINT("CheckpointTest::CheckpointCF:1");
  ASSERT_OK(Put(0, "Default", "Default1"));
  ASSERT_OK(Put(1, "one", "eleven"));
  ASSERT_OK(Put(2, "two", "twelve"));
  ASSERT_OK(Put(3, "three", "thirteen"));
  ASSERT_OK(Put(4, "four", "fourteen"));
  ASSERT_OK(Put(5, "five", "fifteen"));
  TEST_SYNC_POINT("CheckpointTest::CheckpointCF:2");
  t.join();
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
  ASSERT_OK(Put(1, "one", "twentyone"));
  ASSERT_OK(Put(2, "two", "twentytwo"));
  ASSERT_OK(Put(3, "three", "twentythree"));
  ASSERT_OK(Put(4, "four", "twentyfour"));
  ASSERT_OK(Put(5, "five", "twentyfive"));
  ASSERT_OK(Flush());

  // Open snapshot and verify contents while DB is running
  options.create_if_missing = false;
  std::vector<std::string> cfs;
  cfs = {kDefaultColumnFamilyName, "one", "two", "three", "four", "five"};
  std::vector<ColumnFamilyDescriptor> column_families;
  for (size_t i = 0; i < cfs.size(); ++i) {
    column_families.push_back(ColumnFamilyDescriptor(cfs[i], options));
  }
  ASSERT_OK(DB::Open(options, snapshot_name_, column_families, &cphandles,
                     &snapshotDB));
  ASSERT_OK(snapshotDB->Get(roptions, cphandles[0], "Default", &result));
  ASSERT_EQ("Default1", result);
  ASSERT_OK(snapshotDB->Get(roptions, cphandles[1], "one", &result));
  ASSERT_EQ("eleven", result);
  ASSERT_OK(snapshotDB->Get(roptions, cphandles[2], "two", &result));
  for (auto h : cphandles) {
    delete h;
  }
  cphandles.clear();
  delete snapshotDB;
  snapshotDB = nullptr;
}

TEST_F(CheckpointTest, CheckpointCFNoFlush) {
  Options options = CurrentOptions();
  CreateAndReopenWithCF({"one", "two", "three", "four", "five"}, options);

  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();

  ASSERT_OK(Put(0, "Default", "Default"));
  ASSERT_OK(Put(1, "one", "one"));
  ASSERT_OK(Flush());
  ASSERT_OK(Put(2, "two", "two"));

  DB* snapshotDB;
  ReadOptions roptions;
  std::string result;
  std::vector<ColumnFamilyHandle*> cphandles;

  // Take a snapshot
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
      "DBImpl::BackgroundCallFlush:start", [&](void* /*arg*/) {
        // Flush should never trigger.
        FAIL();
      });
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
  Checkpoint* checkpoint;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_, 1000000));
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();

  delete checkpoint;
  ASSERT_OK(Put(1, "one", "two"));
  ASSERT_OK(Flush(1));
  ASSERT_OK(Put(2, "two", "twentytwo"));
  Close();
  EXPECT_OK(DestroyDB(dbname_, options));

  // Open snapshot and verify contents while DB is running
  options.create_if_missing = false;
  std::vector<std::string> cfs;
  cfs = {kDefaultColumnFamilyName, "one", "two", "three", "four", "five"};
  std::vector<ColumnFamilyDescriptor> column_families;
  for (size_t i = 0; i < cfs.size(); ++i) {
    column_families.push_back(ColumnFamilyDescriptor(cfs[i], options));
  }
  ASSERT_OK(DB::Open(options, snapshot_name_, column_families, &cphandles,
                     &snapshotDB));
  ASSERT_OK(snapshotDB->Get(roptions, cphandles[0], "Default", &result));
  ASSERT_EQ("Default", result);
  ASSERT_OK(snapshotDB->Get(roptions, cphandles[1], "one", &result));
  ASSERT_EQ("one", result);
  ASSERT_OK(snapshotDB->Get(roptions, cphandles[2], "two", &result));
  ASSERT_EQ("two", result);
  for (auto h : cphandles) {
    delete h;
  }
  cphandles.clear();
  delete snapshotDB;
  snapshotDB = nullptr;
}

TEST_F(CheckpointTest, CurrentFileModifiedWhileCheckpointing) {
  Options options = CurrentOptions();
  options.max_manifest_file_size = 0;  // always rollover manifest for file add
  Reopen(options);

  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
      {// Get past the flush in the checkpoint thread before adding any keys to
       // the db so the checkpoint thread won't hit the WriteManifest
       // syncpoints.
       {"CheckpointImpl::CreateCheckpoint:FlushDone",
        "CheckpointTest::CurrentFileModifiedWhileCheckpointing:PrePut"},
       // Roll the manifest during checkpointing right after live files are
       // snapshotted.
       {"CheckpointImpl::CreateCheckpoint:SavedLiveFiles1",
        "VersionSet::LogAndApply:WriteManifest"},
       {"VersionSet::LogAndApply:WriteManifestDone",
        "CheckpointImpl::CreateCheckpoint:SavedLiveFiles2"}});
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();

  ROCKSDB_NAMESPACE::port::Thread t([&]() {
    Checkpoint* checkpoint;
    ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
    ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
    delete checkpoint;
  });
  TEST_SYNC_POINT(
      "CheckpointTest::CurrentFileModifiedWhileCheckpointing:PrePut");
  ASSERT_OK(Put("Default", "Default1"));
  ASSERT_OK(Flush());
  t.join();

  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();

  DB* snapshotDB;
  // Successful Open() implies that CURRENT pointed to the manifest in the
  // checkpoint.
  ASSERT_OK(DB::Open(options, snapshot_name_, &snapshotDB));
  delete snapshotDB;
  snapshotDB = nullptr;
}

TEST_F(CheckpointTest, CurrentFileModifiedWhileCheckpointing2PC) {
  Close();
  const std::string dbname = test::PerThreadDBPath("transaction_testdb");
  ASSERT_OK(DestroyDB(dbname, CurrentOptions()));
  test::DeleteDir(env_, dbname);

  Options options = CurrentOptions();
  options.allow_2pc = true;
  // allow_2pc is implicitly set with tx prepare
  // options.allow_2pc = true;
  TransactionDBOptions txn_db_options;
  TransactionDB* txdb;
  Status s = TransactionDB::Open(options, txn_db_options, dbname, &txdb);
  ASSERT_OK(s);
  ColumnFamilyHandle* cfa;
  ColumnFamilyHandle* cfb;
  ColumnFamilyOptions cf_options;
  ASSERT_OK(txdb->CreateColumnFamily(cf_options, "CFA", &cfa));

  WriteOptions write_options;
  // Insert something into CFB so lots of log files will be kept
  // before creating the checkpoint.
  ASSERT_OK(txdb->CreateColumnFamily(cf_options, "CFB", &cfb));
  ASSERT_OK(txdb->Put(write_options, cfb, "", ""));

  ReadOptions read_options;
  std::string value;
  TransactionOptions txn_options;
  Transaction* txn = txdb->BeginTransaction(write_options, txn_options);
  s = txn->SetName("xid");
  ASSERT_OK(s);
  ASSERT_EQ(txdb->GetTransactionByName("xid"), txn);

  s = txn->Put(Slice("foo"), Slice("bar"));
  ASSERT_OK(s);
  s = txn->Put(cfa, Slice("foocfa"), Slice("barcfa"));
  ASSERT_OK(s);
  // Writing prepare into middle of first WAL, then flush WALs many times
  for (int i = 1; i <= 100000; i++) {
    Transaction* tx = txdb->BeginTransaction(write_options, txn_options);
    ASSERT_OK(tx->SetName("x"));
    ASSERT_OK(tx->Put(Slice(std::to_string(i)), Slice("val")));
    ASSERT_OK(tx->Put(cfa, Slice("aaa"), Slice("111")));
    ASSERT_OK(tx->Prepare());
    ASSERT_OK(tx->Commit());
    if (i % 10000 == 0) {
      ASSERT_OK(txdb->Flush(FlushOptions()));
    }
    if (i == 88888) {
      ASSERT_OK(txn->Prepare());
    }
    delete tx;
  }
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
      {{"CheckpointImpl::CreateCheckpoint:SavedLiveFiles1",
        "CheckpointTest::CurrentFileModifiedWhileCheckpointing2PC:PreCommit"},
       {"CheckpointTest::CurrentFileModifiedWhileCheckpointing2PC:PostCommit",
        "CheckpointImpl::CreateCheckpoint:SavedLiveFiles2"}});
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
  ROCKSDB_NAMESPACE::port::Thread t([&]() {
    Checkpoint* checkpoint;
    ASSERT_OK(Checkpoint::Create(txdb, &checkpoint));
    ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
    delete checkpoint;
  });
  TEST_SYNC_POINT(
      "CheckpointTest::CurrentFileModifiedWhileCheckpointing2PC:PreCommit");
  ASSERT_OK(txn->Commit());
  delete txn;
  TEST_SYNC_POINT(
      "CheckpointTest::CurrentFileModifiedWhileCheckpointing2PC:PostCommit");
  t.join();

  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();

  // No more than two logs files should exist.
  std::vector<std::string> files;
  ASSERT_OK(env_->GetChildren(snapshot_name_, &files));
  int num_log_files = 0;
  for (auto& file : files) {
    uint64_t num;
    FileType type;
    WalFileType log_type;
    if (ParseFileName(file, &num, &type, &log_type) && type == kWalFile) {
      num_log_files++;
    }
  }
  // One flush after preapare + one outstanding file before checkpoint + one log
  // file generated after checkpoint.
  ASSERT_LE(num_log_files, 3);

  TransactionDB* snapshotDB;
  std::vector<ColumnFamilyDescriptor> column_families;
  column_families.push_back(
      ColumnFamilyDescriptor(kDefaultColumnFamilyName, ColumnFamilyOptions()));
  column_families.push_back(
      ColumnFamilyDescriptor("CFA", ColumnFamilyOptions()));
  column_families.push_back(
      ColumnFamilyDescriptor("CFB", ColumnFamilyOptions()));
  std::vector<ROCKSDB_NAMESPACE::ColumnFamilyHandle*> cf_handles;
  ASSERT_OK(TransactionDB::Open(options, txn_db_options, snapshot_name_,
                                column_families, &cf_handles, &snapshotDB));
  ASSERT_OK(snapshotDB->Get(read_options, "foo", &value));
  ASSERT_EQ(value, "bar");
  ASSERT_OK(snapshotDB->Get(read_options, cf_handles[1], "foocfa", &value));
  ASSERT_EQ(value, "barcfa");

  delete cfa;
  delete cfb;
  delete cf_handles[0];
  delete cf_handles[1];
  delete cf_handles[2];
  delete snapshotDB;
  snapshotDB = nullptr;
  delete txdb;
}

TEST_F(CheckpointTest, CheckpointInvalidDirectoryName) {
  for (std::string checkpoint_dir : {"", "/", "////"}) {
    Checkpoint* checkpoint;
    ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
    ASSERT_TRUE(
        checkpoint->CreateCheckpoint(checkpoint_dir).IsInvalidArgument());
    delete checkpoint;
  }
}

TEST_F(CheckpointTest, CheckpointWithParallelWrites) {
  // When run with TSAN, this exposes the data race fixed in
  // https://github.com/facebook/rocksdb/pull/3603
  ASSERT_OK(Put("key1", "val1"));
  port::Thread thread([this]() { ASSERT_OK(Put("key2", "val2")); });
  Checkpoint* checkpoint;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
  delete checkpoint;
  thread.join();
}

TEST_F(CheckpointTest, CheckpointWithUnsyncedDataDropped) {
  Options options = CurrentOptions();
  std::unique_ptr<FaultInjectionTestEnv> env(new FaultInjectionTestEnv(env_));
  options.env = env.get();
  Reopen(options);
  ASSERT_OK(Put("key1", "val1"));
  Checkpoint* checkpoint;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
  delete checkpoint;
  ASSERT_OK(env->DropUnsyncedFileData());

  // make sure it's openable even though whatever data that wasn't synced got
  // dropped.
  options.env = env_;
  DB* snapshot_db;
  ASSERT_OK(DB::Open(options, snapshot_name_, &snapshot_db));
  ReadOptions read_opts;
  std::string get_result;
  ASSERT_OK(snapshot_db->Get(read_opts, "key1", &get_result));
  ASSERT_EQ("val1", get_result);
  delete snapshot_db;
  delete db_;
  db_ = nullptr;
}

TEST_F(CheckpointTest, CheckpointOptionsFileFailedToPersist) {
  // Regression test for a bug where checkpoint failed on a DB where persisting
  // OPTIONS file failed and the DB was opened with
  // `fail_if_options_file_error == false`.
  Options options = CurrentOptions();
  options.fail_if_options_file_error = false;
  auto fault_fs = std::make_shared<FaultInjectionTestFS>(FileSystem::Default());

  // Setup `FaultInjectionTestFS` and `SyncPoint` callbacks to fail one
  // operation when inside the OPTIONS file persisting code.
  std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
  fault_fs->SetRandomMetadataWriteError(1 /* one_in */);
  SyncPoint::GetInstance()->SetCallBack(
      "PersistRocksDBOptions:start", [fault_fs](void* /* arg */) {
        fault_fs->EnableMetadataWriteErrorInjection();
      });
  SyncPoint::GetInstance()->SetCallBack(
      "FaultInjectionTestFS::InjectMetadataWriteError:Injected",
      [fault_fs](void* /* arg */) {
        fault_fs->DisableMetadataWriteErrorInjection();
      });
  options.env = fault_fs_env.get();
  SyncPoint::GetInstance()->EnableProcessing();

  Reopen(options);
  ASSERT_OK(Put("key1", "val1"));
  Checkpoint* checkpoint;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
  delete checkpoint;

  // Make sure it's usable.
  options.env = env_;
  DB* snapshot_db;
  ASSERT_OK(DB::Open(options, snapshot_name_, &snapshot_db));
  ReadOptions read_opts;
  std::string get_result;
  ASSERT_OK(snapshot_db->Get(read_opts, "key1", &get_result));
  ASSERT_EQ("val1", get_result);
  delete snapshot_db;
  delete db_;
  db_ = nullptr;
}

TEST_F(CheckpointTest, CheckpointReadOnlyDB) {
  ASSERT_OK(Put("foo", "foo_value"));
  ASSERT_OK(Flush());
  Close();
  Options options = CurrentOptions();
  ASSERT_OK(ReadOnlyReopen(options));
  Checkpoint* checkpoint = nullptr;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
  delete checkpoint;
  checkpoint = nullptr;
  Close();
  DB* snapshot_db = nullptr;
  ASSERT_OK(DB::Open(options, snapshot_name_, &snapshot_db));
  ReadOptions read_opts;
  std::string get_result;
  ASSERT_OK(snapshot_db->Get(read_opts, "foo", &get_result));
  ASSERT_EQ("foo_value", get_result);
  delete snapshot_db;
}

TEST_F(CheckpointTest, CheckpointReadOnlyDBWithMultipleColumnFamilies) {
  Options options = CurrentOptions();
  CreateAndReopenWithCF({"pikachu", "eevee"}, options);
  for (int i = 0; i != 3; ++i) {
    ASSERT_OK(Put(i, "foo", "foo_value"));
    ASSERT_OK(Flush(i));
  }
  Close();
  Status s = ReadOnlyReopenWithColumnFamilies(
      {kDefaultColumnFamilyName, "pikachu", "eevee"}, options);
  ASSERT_OK(s);
  Checkpoint* checkpoint = nullptr;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));
  delete checkpoint;
  checkpoint = nullptr;
  Close();

  std::vector<ColumnFamilyDescriptor> column_families{
      {kDefaultColumnFamilyName, options},
      {"pikachu", options},
      {"eevee", options}};
  DB* snapshot_db = nullptr;
  std::vector<ColumnFamilyHandle*> snapshot_handles;
  s = DB::Open(options, snapshot_name_, column_families, &snapshot_handles,
               &snapshot_db);
  ASSERT_OK(s);
  ReadOptions read_opts;
  for (int i = 0; i != 3; ++i) {
    std::string get_result;
    s = snapshot_db->Get(read_opts, snapshot_handles[i], "foo", &get_result);
    ASSERT_OK(s);
    ASSERT_EQ("foo_value", get_result);
  }

  for (auto snapshot_h : snapshot_handles) {
    delete snapshot_h;
  }
  snapshot_handles.clear();
  delete snapshot_db;
}

TEST_F(CheckpointTest, CheckpointWithDbPath) {
  Options options = CurrentOptions();
  options.db_paths.emplace_back(dbname_ + "_2", 0);
  Reopen(options);
  ASSERT_OK(Put("key1", "val1"));
  Flush();
  Checkpoint* checkpoint;
  ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
  // Currently not supported
  ASSERT_TRUE(checkpoint->CreateCheckpoint(snapshot_name_).IsNotSupported());
  delete checkpoint;
}

TEST_F(CheckpointTest, PutRaceWithCheckpointTrackedWalSync) {
  // Repro for a race condition where a user write comes in after the checkpoint
  // syncs WAL for `track_and_verify_wals_in_manifest` but before the
  // corresponding MANIFEST update. With the bug, that scenario resulted in an
  // unopenable DB with error "Corruption: Size mismatch: WAL ...".
  Options options = CurrentOptions();
  std::unique_ptr<FaultInjectionTestEnv> fault_env(
      new FaultInjectionTestEnv(env_));
  options.env = fault_env.get();
  options.track_and_verify_wals_in_manifest = true;
  Reopen(options);

  ASSERT_OK(Put("key1", "val1"));

  SyncPoint::GetInstance()->SetCallBack(
      "DBImpl::SyncWAL:BeforeMarkLogsSynced:1",
      [this](void* /* arg */) { ASSERT_OK(Put("key2", "val2")); });
  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();

  std::unique_ptr<Checkpoint> checkpoint;
  {
    Checkpoint* checkpoint_ptr;
    ASSERT_OK(Checkpoint::Create(db_, &checkpoint_ptr));
    checkpoint.reset(checkpoint_ptr);
  }

  ASSERT_OK(checkpoint->CreateCheckpoint(snapshot_name_));

  // Ensure callback ran.
  ASSERT_EQ("val2", Get("key2"));

  Close();

  // Simulate full loss of unsynced data. This drops "key2" -> "val2" from the
  // DB WAL.
  fault_env->DropUnsyncedFileData();

  // Before the bug fix, reopening the DB would fail because the MANIFEST's
  // AddWal entry indicated the WAL should be synced through "key2" -> "val2".
  Reopen(options);

  // Need to close before `fault_env` goes out of scope.
  Close();
}

}  // namespace ROCKSDB_NAMESPACE

int main(int argc, char** argv) {
  ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
  ::testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}

#else
#include <stdio.h>

int main(int /*argc*/, char** /*argv*/) {
  fprintf(stderr, "SKIPPED as Checkpoint is not supported in ROCKSDB_LITE\n");
  return 0;
}

#endif  // !ROCKSDB_LITE