summaryrefslogtreecommitdiffstats
path: root/src/rgw/rgw_sal_dbstore.h
blob: 2d65a7f3fee11116e8dfde8f38d6a5ce9f387901 (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
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp

/*
 * Ceph - scalable distributed file system
 *
 * Copyright (C) 2021 Red Hat, Inc.
 *
 * This is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 2.1, as published by the Free Software
 * Foundation. See file COPYING.
 *
 */

#pragma once

#include "rgw_sal_store.h"
#include "rgw_oidc_provider.h"
#include "rgw_role.h"
#include "rgw_lc.h"
#include "rgw_multi.h"

#include "driver/dbstore/common/dbstore.h"
#include "driver/dbstore/dbstore_mgr.h"

namespace rgw { namespace sal {

  class DBStore;

class LCDBSerializer : public StoreLCSerializer {

public:
  LCDBSerializer(DBStore* store, const std::string& oid, const std::string& lock_name, const std::string& cookie) {}

  virtual int try_lock(const DoutPrefixProvider *dpp, utime_t dur, optional_yield y) override { return 0; }
  virtual int unlock() override {
    return 0;
  }
};

class DBLifecycle : public StoreLifecycle {
  DBStore* store;

public:
  DBLifecycle(DBStore* _st) : store(_st) {}

  using StoreLifecycle::get_entry;
  virtual int get_entry(const std::string& oid, const std::string& marker, std::unique_ptr<LCEntry>* entry) override;
  virtual int get_next_entry(const std::string& oid, const std::string& marker, std::unique_ptr<LCEntry>* entry) override;
  virtual int set_entry(const std::string& oid, LCEntry& entry) override;
  virtual int list_entries(const std::string& oid, const std::string& marker,
			   uint32_t max_entries,
			   std::vector<std::unique_ptr<LCEntry>>& entries) override;
  virtual int rm_entry(const std::string& oid, LCEntry& entry) override;
  virtual int get_head(const std::string& oid, std::unique_ptr<LCHead>* head) override;
  virtual int put_head(const std::string& oid, LCHead& head) override;
  virtual std::unique_ptr<LCSerializer> get_serializer(const std::string& lock_name,
						       const std::string& oid,
						       const std::string& cookie) override;
};

class DBNotification : public StoreNotification {
protected:
  public:
  DBNotification(Object* _obj, Object* _src_obj, rgw::notify::EventType _type)
    : StoreNotification(_obj, _src_obj, _type) {}
    ~DBNotification() = default;

    virtual int publish_reserve(const DoutPrefixProvider *dpp, RGWObjTags* obj_tags = nullptr) override { return 0;}
    virtual int publish_commit(const DoutPrefixProvider* dpp, uint64_t size,
			       const ceph::real_time& mtime, const std::string& etag, const std::string& version) override { return 0; }
};

  class DBUser : public StoreUser {
    private:
      DBStore *store;

    public:
      DBUser(DBStore *_st, const rgw_user& _u) : StoreUser(_u), store(_st) { }
      DBUser(DBStore *_st, const RGWUserInfo& _i) : StoreUser(_i), store(_st) { }
      DBUser(DBStore *_st) : store(_st) { }
      DBUser(DBUser& _o) = default;
      DBUser() {}

      virtual std::unique_ptr<User> clone() override {
        return std::unique_ptr<User>(new DBUser(*this));
      }
      int list_buckets(const DoutPrefixProvider *dpp, const std::string& marker, const std::string& end_marker,
          uint64_t max, bool need_stats, BucketList& buckets, optional_yield y) override;
      virtual int create_bucket(const DoutPrefixProvider* dpp,
          const rgw_bucket& b,
          const std::string& zonegroup_id,
          rgw_placement_rule& placement_rule,
          std::string& swift_ver_location,
          const RGWQuotaInfo* pquota_info,
          const RGWAccessControlPolicy& policy,
          Attrs& attrs,
          RGWBucketInfo& info,
          obj_version& ep_objv,
          bool exclusive,
          bool obj_lock_enabled,
          bool* existed,
          req_info& req_info,
          std::unique_ptr<Bucket>* bucket,
          optional_yield y) override;
      virtual int read_attrs(const DoutPrefixProvider* dpp, optional_yield y) override;
      virtual int read_stats(const DoutPrefixProvider *dpp,
          optional_yield y, RGWStorageStats* stats,
          ceph::real_time *last_stats_sync = nullptr,
          ceph::real_time *last_stats_update = nullptr) override;
      virtual int read_stats_async(const DoutPrefixProvider *dpp, RGWGetUserStats_CB* cb) override;
      virtual int complete_flush_stats(const DoutPrefixProvider *dpp, optional_yield y) override;
      virtual int read_usage(const DoutPrefixProvider *dpp, uint64_t start_epoch, uint64_t end_epoch, uint32_t max_entries,
          bool* is_truncated, RGWUsageIter& usage_iter,
          std::map<rgw_user_bucket, rgw_usage_log_entry>& usage) override;
      virtual int trim_usage(const DoutPrefixProvider *dpp, uint64_t start_epoch, uint64_t end_epoch) override;

      /* Placeholders */
      virtual int merge_and_store_attrs(const DoutPrefixProvider* dpp, Attrs& new_attrs, optional_yield y) override;
      virtual int load_user(const DoutPrefixProvider* dpp, optional_yield y) override;
      virtual int store_user(const DoutPrefixProvider* dpp, optional_yield y, bool exclusive, RGWUserInfo* old_info = nullptr) override;
      virtual int remove_user(const DoutPrefixProvider* dpp, optional_yield y) override;
      virtual int verify_mfa(const std::string& mfa_str, bool* verified, const DoutPrefixProvider* dpp, optional_yield y) override;

      friend class DBBucket;
  };

  class DBBucket : public StoreBucket {
    private:
      DBStore *store;
      RGWAccessControlPolicy acls;

    public:
      DBBucket(DBStore *_st)
        : store(_st),
        acls() {
        }

      DBBucket(DBStore *_st, User* _u)
        : StoreBucket(_u),
        store(_st),
        acls() {
        }

      DBBucket(DBStore *_st, const rgw_bucket& _b)
        : StoreBucket(_b),
        store(_st),
        acls() {
        }

      DBBucket(DBStore *_st, const RGWBucketEnt& _e)
        : StoreBucket(_e),
        store(_st),
        acls() {
        }

      DBBucket(DBStore *_st, const RGWBucketInfo& _i)
        : StoreBucket(_i),
        store(_st),
        acls() {
        }

      DBBucket(DBStore *_st, const rgw_bucket& _b, User* _u)
        : StoreBucket(_b, _u),
        store(_st),
        acls() {
        }

      DBBucket(DBStore *_st, const RGWBucketEnt& _e, User* _u)
        : StoreBucket(_e, _u),
        store(_st),
        acls() {
        }

      DBBucket(DBStore *_st, const RGWBucketInfo& _i, User* _u)
        : StoreBucket(_i, _u),
        store(_st),
        acls() {
        }

      ~DBBucket() { }

      virtual std::unique_ptr<Object> get_object(const rgw_obj_key& k) override;
      virtual int list(const DoutPrefixProvider *dpp, ListParams&, int, ListResults&, optional_yield y) override;
      virtual int remove_bucket(const DoutPrefixProvider *dpp, bool delete_children, bool forward_to_master, req_info* req_info, optional_yield y) override;
      virtual int remove_bucket_bypass_gc(int concurrent_max, bool
					keep_index_consistent,
					optional_yield y, const
					DoutPrefixProvider *dpp) override;
      virtual RGWAccessControlPolicy& get_acl(void) override { return acls; }
      virtual int set_acl(const DoutPrefixProvider *dpp, RGWAccessControlPolicy& acl, optional_yield y) override;
      virtual int load_bucket(const DoutPrefixProvider *dpp, optional_yield y, bool get_stats = false) override;
      virtual int read_stats(const DoutPrefixProvider *dpp,
			     const bucket_index_layout_generation& idx_layout,
			     int shard_id,
          std::string *bucket_ver, std::string *master_ver,
          std::map<RGWObjCategory, RGWStorageStats>& stats,
          std::string *max_marker = nullptr,
          bool *syncstopped = nullptr) override;
      virtual int read_stats_async(const DoutPrefixProvider *dpp, const bucket_index_layout_generation& idx_layout, int shard_id, RGWGetBucketStats_CB* ctx) override;
      virtual int sync_user_stats(const DoutPrefixProvider *dpp, optional_yield y) override;
      virtual int update_container_stats(const DoutPrefixProvider *dpp) override;
      virtual int check_bucket_shards(const DoutPrefixProvider *dpp) override;
      virtual int chown(const DoutPrefixProvider *dpp, User& new_user, optional_yield y) override;
      virtual int put_info(const DoutPrefixProvider *dpp, bool exclusive, ceph::real_time mtime) override;
      virtual bool is_owner(User* user) override;
      virtual int check_empty(const DoutPrefixProvider *dpp, optional_yield y) override;
      virtual int check_quota(const DoutPrefixProvider *dpp, RGWQuota& quota, uint64_t obj_size, optional_yield y, bool check_size_only = false) override;
      virtual int merge_and_store_attrs(const DoutPrefixProvider *dpp, Attrs& attrs, optional_yield y) override;
      virtual int try_refresh_info(const DoutPrefixProvider *dpp, ceph::real_time *pmtime) override;
      virtual int read_usage(const DoutPrefixProvider *dpp, uint64_t start_epoch, uint64_t end_epoch, uint32_t max_entries,
          bool *is_truncated, RGWUsageIter& usage_iter,
          std::map<rgw_user_bucket, rgw_usage_log_entry>& usage) override;
      virtual int trim_usage(const DoutPrefixProvider *dpp, uint64_t start_epoch, uint64_t end_epoch) override;
      virtual int remove_objs_from_index(const DoutPrefixProvider *dpp, std::list<rgw_obj_index_key>& objs_to_unlink) override;
      virtual int check_index(const DoutPrefixProvider *dpp, std::map<RGWObjCategory, RGWStorageStats>& existing_stats, std::map<RGWObjCategory, RGWStorageStats>& calculated_stats) override;
      virtual int rebuild_index(const DoutPrefixProvider *dpp) override;
      virtual int set_tag_timeout(const DoutPrefixProvider *dpp, uint64_t timeout) override;
      virtual int purge_instance(const DoutPrefixProvider *dpp) override;
      virtual std::unique_ptr<Bucket> clone() override {
        return std::make_unique<DBBucket>(*this);
      }
      virtual std::unique_ptr<MultipartUpload> get_multipart_upload(
				const std::string& oid, std::optional<std::string> upload_id,
				ACLOwner owner={}, ceph::real_time mtime=ceph::real_clock::now()) override;
      virtual int list_multiparts(const DoutPrefixProvider *dpp,
				const std::string& prefix,
				std::string& marker,
				const std::string& delim,
				const int& max_uploads,
				std::vector<std::unique_ptr<MultipartUpload>>& uploads,
				std::map<std::string, bool> *common_prefixes,
				bool *is_truncated) override;
      virtual int abort_multiparts(const DoutPrefixProvider* dpp,
				   CephContext* cct) override;

      friend class DBStore;
  };

  class DBPlacementTier: public StorePlacementTier {
    DBStore* store;
    RGWZoneGroupPlacementTier tier;
  public:
    DBPlacementTier(DBStore* _store, const RGWZoneGroupPlacementTier& _tier) : store(_store), tier(_tier) {}
    virtual ~DBPlacementTier() = default;

    virtual const std::string& get_tier_type() { return tier.tier_type; }
    virtual const std::string& get_storage_class() { return tier.storage_class; }
    virtual bool retain_head_object() { return tier.retain_head_object; }
    RGWZoneGroupPlacementTier& get_rt() { return tier; }
  };

  class DBZoneGroup : public StoreZoneGroup {
    DBStore* store;
    std::unique_ptr<RGWZoneGroup> group;
    std::string empty;
  public:
    DBZoneGroup(DBStore* _store, std::unique_ptr<RGWZoneGroup> _group) : store(_store), group(std::move(_group)) {}
    virtual ~DBZoneGroup() = default;

    virtual const std::string& get_id() const override { return group->get_id(); };
    virtual const std::string& get_name() const override { return group->get_name(); };
    virtual int equals(const std::string& other_zonegroup) const override {
      return group->equals(other_zonegroup);
    };
    /** Get the endpoint from zonegroup, or from master zone if not set */
    virtual const std::string& get_endpoint() const override;
    virtual bool placement_target_exists(std::string& target) const override;
    virtual bool is_master_zonegroup() const override {
      return group->is_master_zonegroup();
    };
    virtual const std::string& get_api_name() const override { return group->api_name; };
    virtual void get_placement_target_names(std::set<std::string>& names) const override;
    virtual const std::string& get_default_placement_name() const override {
      return group->default_placement.name; };
    virtual int get_hostnames(std::list<std::string>& names) const override {
      names = group->hostnames;
      return 0;
    };
    virtual int get_s3website_hostnames(std::list<std::string>& names) const override {
      names = group->hostnames_s3website;
      return 0;
    };
    virtual int get_zone_count() const override {
      /* currently only 1 zone supported */
      return 1;
    }
    virtual int get_placement_tier(const rgw_placement_rule& rule,
				   std::unique_ptr<PlacementTier>* tier) {
      return -1;
    }
    virtual int get_zone_by_id(const std::string& id, std::unique_ptr<Zone>* zone) override {
      return -1;
    }
    virtual int get_zone_by_name(const std::string& name, std::unique_ptr<Zone>* zone) override {
      return -1;
    }
    virtual int list_zones(std::list<std::string>& zone_ids) override {
      zone_ids.clear();
      return 0;
    }
    bool supports(std::string_view feature) const override {
      return group->supports(feature);
    }
    virtual std::unique_ptr<ZoneGroup> clone() override {
      std::unique_ptr<RGWZoneGroup>zg = std::make_unique<RGWZoneGroup>(*group.get());
      return std::make_unique<DBZoneGroup>(store, std::move(zg));
    }
  };

  class DBZone : public StoreZone {
    protected:
      DBStore* store;
      RGWRealm *realm{nullptr};
      DBZoneGroup *zonegroup{nullptr};
      RGWZone *zone_public_config{nullptr}; /* external zone params, e.g., entrypoints, log flags, etc. */
      RGWZoneParams *zone_params{nullptr}; /* internal zone params, e.g., rados pools */
      RGWPeriod *current_period{nullptr};

    public:
      DBZone(DBStore* _store) : store(_store) {
	realm = new RGWRealm();
        zonegroup = new DBZoneGroup(store, std::make_unique<RGWZoneGroup>());
        zone_public_config = new RGWZone();
        zone_params = new RGWZoneParams();
        current_period = new RGWPeriod();

        // XXX: only default and STANDARD supported for now
        RGWZonePlacementInfo info;
        RGWZoneStorageClasses sc;
        sc.set_storage_class("STANDARD", nullptr, nullptr);
        info.storage_classes = sc;
        zone_params->placement_pools["default"] = info;
      }
      ~DBZone() {
	delete realm;
	delete zonegroup;
	delete zone_public_config;
	delete zone_params;
	delete current_period;
      }

      virtual std::unique_ptr<Zone> clone() override {
	return std::make_unique<DBZone>(store);
      }
      virtual ZoneGroup& get_zonegroup() override;
      const RGWZoneParams& get_rgw_params();
      virtual const std::string& get_id() override;
      virtual const std::string& get_name() const override;
      virtual bool is_writeable() override;
      virtual bool get_redirect_endpoint(std::string* endpoint) override;
      virtual bool has_zonegroup_api(const std::string& api) const override;
      virtual const std::string& get_current_period_id() override;
      virtual const RGWAccessKey& get_system_key() override;
      virtual const std::string& get_realm_name() override;
      virtual const std::string& get_realm_id() override;
      virtual const std::string_view get_tier_type() override { return "rgw"; }
      virtual RGWBucketSyncPolicyHandlerRef get_sync_policy_handler() override;
  };

  class DBLuaManager : public StoreLuaManager {
    DBStore* store;

    public:
    DBLuaManager(DBStore* _s) : store(_s)
    {
    }
    virtual ~DBLuaManager() = default;

    /** Get a script named with the given key from the backing store */
    virtual int get_script(const DoutPrefixProvider* dpp, optional_yield y, const std::string& key, std::string& script) override;
    /** Put a script named with the given key to the backing store */
    virtual int put_script(const DoutPrefixProvider* dpp, optional_yield y, const std::string& key, const std::string& script) override;
    /** Delete a script named with the given key from the backing store */
    virtual int del_script(const DoutPrefixProvider* dpp, optional_yield y, const std::string& key) override;
    /** Add a lua package */
    virtual int add_package(const DoutPrefixProvider* dpp, optional_yield y, const std::string& package_name) override;
    /** Remove a lua package */
    virtual int remove_package(const DoutPrefixProvider* dpp, optional_yield y, const std::string& package_name) override;
    /** List lua packages */
    virtual int list_packages(const DoutPrefixProvider* dpp, optional_yield y, rgw::lua::packages_t& packages) override;
  };

  class DBOIDCProvider : public RGWOIDCProvider {
    DBStore* store;
    public:
    DBOIDCProvider(DBStore* _store) : store(_store) {}
    ~DBOIDCProvider() = default;

    virtual int store_url(const DoutPrefixProvider *dpp, const std::string& url, bool exclusive, optional_yield y) override { return 0; }
    virtual int read_url(const DoutPrefixProvider *dpp, const std::string& url, const std::string& tenant) override { return 0; }
    virtual int delete_obj(const DoutPrefixProvider *dpp, optional_yield y) override { return 0;}

    void encode(bufferlist& bl) const {
      RGWOIDCProvider::encode(bl);
    }
    void decode(bufferlist::const_iterator& bl) {
      RGWOIDCProvider::decode(bl);
    }
  };

  /*
   * For multipart upload, below is the process flow -
   *
   * MultipartUpload::Init - create head object of meta obj (src_obj_name + "." + upload_id)
   *                     [ Meta object stores all the parts upload info]
   * MultipartWriter::process - create all data/tail objects with obj_name same as
   *                        meta obj (so that they can all be identified & deleted
   *                        during abort)
   * MultipartUpload::Abort - Just delete meta obj .. that will indirectly delete all the
   *                     uploads associated with that upload id / meta obj so far.
   * MultipartUpload::Complete - create head object of the original object (if not exists) &
   *                     rename all data/tail objects to orig object name and update
   *                     metadata of the orig object.
   */
  class DBMultipartPart : public StoreMultipartPart {
  protected:
    RGWUploadPartInfo info; /* XXX: info contains manifest also which is not needed */

  public:
    DBMultipartPart() = default;
    virtual ~DBMultipartPart() = default;

    virtual RGWUploadPartInfo& get_info() { return info; }
    virtual void set_info(const RGWUploadPartInfo& _info) { info = _info; }
    virtual uint32_t get_num() { return info.num; }
    virtual uint64_t get_size() { return info.accounted_size; }
    virtual const std::string& get_etag() { return info.etag; }
    virtual ceph::real_time& get_mtime() { return info.modified; }

  };

  class DBMPObj {
    std::string oid; // object name
    std::string upload_id;
    std::string meta; // multipart meta object = <oid>.<upload_id>
  public:
    DBMPObj() {}
    DBMPObj(const std::string& _oid, const std::string& _upload_id) {
      init(_oid, _upload_id, _upload_id);
    }
    DBMPObj(const std::string& _oid, std::optional<std::string> _upload_id) {
      if (_upload_id) {
        init(_oid, *_upload_id, *_upload_id);
      } else {
        from_meta(_oid);
      }
    }
    void init(const std::string& _oid, const std::string& _upload_id) {
      init(_oid, _upload_id, _upload_id);
    }
    void init(const std::string& _oid, const std::string& _upload_id, const std::string& part_unique_str) {
      if (_oid.empty()) {
        clear();
        return;
      }
      oid = _oid;
      upload_id = _upload_id;
      meta = oid + "." + upload_id;
    }
    const std::string& get_upload_id() const {
      return upload_id;
    }
    const std::string& get_key() const {
      return oid;
    }
    const std::string& get_meta() const { return meta; }
    bool from_meta(const std::string& meta) {
      int end_pos = meta.length();
      int mid_pos = meta.rfind('.', end_pos - 1); // <key>.<upload_id>
      if (mid_pos < 0)
        return false;
      oid = meta.substr(0, mid_pos);
      upload_id = meta.substr(mid_pos + 1, end_pos - mid_pos - 1);
      init(oid, upload_id, upload_id);
      return true;
    }
    void clear() {
      oid = "";
      meta = "";
      upload_id = "";
    }
  };

  class DBMultipartUpload : public StoreMultipartUpload {
    DBStore* store;
    DBMPObj mp_obj;
    ACLOwner owner;
    ceph::real_time mtime;
    rgw_placement_rule placement;

  public:
    DBMultipartUpload(DBStore* _store, Bucket* _bucket, const std::string& oid, std::optional<std::string> upload_id, ACLOwner _owner, ceph::real_time _mtime) : StoreMultipartUpload(_bucket), store(_store), mp_obj(oid, upload_id), owner(_owner), mtime(_mtime) {}
    virtual ~DBMultipartUpload() = default;

    virtual const std::string& get_meta() const { return mp_obj.get_meta(); }
    virtual const std::string& get_key() const { return mp_obj.get_key(); }
    virtual const std::string& get_upload_id() const { return mp_obj.get_upload_id(); }
    virtual const ACLOwner& get_owner() const override { return owner; }
    virtual ceph::real_time& get_mtime() { return mtime; }
    virtual std::unique_ptr<rgw::sal::Object> get_meta_obj() override;
    virtual int init(const DoutPrefixProvider* dpp, optional_yield y, ACLOwner& owner, rgw_placement_rule& dest_placement, rgw::sal::Attrs& attrs) override;
    virtual int list_parts(const DoutPrefixProvider* dpp, CephContext* cct,
			 int num_parts, int marker,
			 int* next_marker, bool* truncated,
			 bool assume_unsorted = false) override;
    virtual int abort(const DoutPrefixProvider* dpp, CephContext* cct) override;
    virtual int complete(const DoutPrefixProvider* dpp,
		       optional_yield y, CephContext* cct,
		       std::map<int, std::string>& part_etags,
		       std::list<rgw_obj_index_key>& remove_objs,
		       uint64_t& accounted_size, bool& compressed,
		       RGWCompressionInfo& cs_info, off_t& ofs,
		       std::string& tag, ACLOwner& owner,
		       uint64_t olh_epoch,
		       rgw::sal::Object* target_obj) override;
    virtual int get_info(const DoutPrefixProvider *dpp, optional_yield y, rgw_placement_rule** rule, rgw::sal::Attrs* attrs = nullptr) override;
    virtual std::unique_ptr<Writer> get_writer(const DoutPrefixProvider *dpp,
			  optional_yield y,
			  rgw::sal::Object* obj,
			  const rgw_user& owner,
			  const rgw_placement_rule *ptail_placement_rule,
			  uint64_t part_num,
			  const std::string& part_num_str) override;
  };

  class DBObject : public StoreObject {
    private:
      DBStore* store;
      RGWAccessControlPolicy acls;

    public:
      struct DBReadOp : public ReadOp {
        private:
          DBObject* source;
          RGWObjectCtx* rctx;
          DB::Object op_target;
          DB::Object::Read parent_op;

        public:
          DBReadOp(DBObject *_source, RGWObjectCtx *_rctx);

          virtual int prepare(optional_yield y, const DoutPrefixProvider* dpp) override;

	  /*
	   * Both `read` and `iterate` read up through index `end`
	   * *inclusive*. The number of bytes that could be returned is
	   * `end - ofs + 1`.
	   */
	  virtual int read(int64_t ofs, int64_t end, bufferlist& bl,
			   optional_yield y,
			   const DoutPrefixProvider* dpp) override;
	  virtual int iterate(const DoutPrefixProvider* dpp, int64_t ofs,
			      int64_t end, RGWGetDataCB* cb,
			      optional_yield y) override;

	  virtual int get_attr(const DoutPrefixProvider* dpp, const char* name, bufferlist& dest, optional_yield y) override;
      };

      struct DBDeleteOp : public DeleteOp {
        private:
          DBObject* source;
          DB::Object op_target;
          DB::Object::Delete parent_op;

        public:
          DBDeleteOp(DBObject* _source);

          virtual int delete_obj(const DoutPrefixProvider* dpp, optional_yield y, uint32_t flags) override;
      };

      DBObject() = default;

      DBObject(DBStore *_st, const rgw_obj_key& _k)
        : StoreObject(_k),
        store(_st),
        acls() {}

      DBObject(DBStore *_st, const rgw_obj_key& _k, Bucket* _b)
        : StoreObject(_k, _b),
        store(_st),
        acls() {}

      DBObject(DBObject& _o) = default;

      virtual int delete_object(const DoutPrefixProvider* dpp,
          optional_yield y,
          uint32_t flags) override;
      virtual int delete_obj_aio(const DoutPrefixProvider* dpp, RGWObjState* astate, Completions* aio,
          bool keep_index_consistent, optional_yield y) override;
      virtual int copy_object(User* user,
          req_info* info, const rgw_zone_id& source_zone,
          rgw::sal::Object* dest_object, rgw::sal::Bucket* dest_bucket,
          rgw::sal::Bucket* src_bucket,
          const rgw_placement_rule& dest_placement,
          ceph::real_time* src_mtime, ceph::real_time* mtime,
          const ceph::real_time* mod_ptr, const ceph::real_time* unmod_ptr,
          bool high_precision_time,
          const char* if_match, const char* if_nomatch,
          AttrsMod attrs_mod, bool copy_if_newer, Attrs& attrs,
          RGWObjCategory category, uint64_t olh_epoch,
          boost::optional<ceph::real_time> delete_at,
          std::string* version_id, std::string* tag, std::string* etag,
          void (*progress_cb)(off_t, void *), void* progress_data,
          const DoutPrefixProvider* dpp, optional_yield y) override;
      virtual RGWAccessControlPolicy& get_acl(void) override { return acls; }
      virtual int set_acl(const RGWAccessControlPolicy& acl) override { acls = acl; return 0; }

      virtual int get_obj_state(const DoutPrefixProvider* dpp, RGWObjState **state, optional_yield y, bool follow_olh = true) override;
      virtual int set_obj_attrs(const DoutPrefixProvider* dpp, Attrs* setattrs, Attrs* delattrs, optional_yield y) override;
      virtual int get_obj_attrs(optional_yield y, const DoutPrefixProvider* dpp, rgw_obj* target_obj = NULL) override;
      virtual int modify_obj_attrs(const char* attr_name, bufferlist& attr_val, optional_yield y, const DoutPrefixProvider* dpp) override;
      virtual int delete_obj_attrs(const DoutPrefixProvider* dpp, const char* attr_name, optional_yield y) override;
      virtual bool is_expired() override;
      virtual void gen_rand_obj_instance_name() override;
      virtual std::unique_ptr<Object> clone() override {
        return std::unique_ptr<Object>(new DBObject(*this));
      }
      virtual std::unique_ptr<MPSerializer> get_serializer(const DoutPrefixProvider *dpp,
							   const std::string& lock_name) override;
      virtual int transition(Bucket* bucket,
          const rgw_placement_rule& placement_rule,
          const real_time& mtime,
          uint64_t olh_epoch,
          const DoutPrefixProvider* dpp,
          optional_yield y,
          uint32_t flags) override;
      virtual bool placement_rules_match(rgw_placement_rule& r1, rgw_placement_rule& r2) override;
      virtual int dump_obj_layout(const DoutPrefixProvider *dpp, optional_yield y, Formatter* f) override;

      /* Swift versioning */
      virtual int swift_versioning_restore(bool& restored,
          const DoutPrefixProvider* dpp) override;
      virtual int swift_versioning_copy(const DoutPrefixProvider* dpp,
          optional_yield y) override;

      /* OPs */
      virtual std::unique_ptr<ReadOp> get_read_op() override;
      virtual std::unique_ptr<DeleteOp> get_delete_op() override;

      /* OMAP */
      virtual int omap_get_vals(const DoutPrefixProvider *dpp, const std::string& marker, uint64_t count,
          std::map<std::string, bufferlist> *m,
          bool* pmore, optional_yield y) override;
      virtual int omap_get_all(const DoutPrefixProvider *dpp, std::map<std::string, bufferlist> *m,
          optional_yield y) override;
      virtual int omap_get_vals_by_keys(const DoutPrefixProvider *dpp, const std::string& oid,
          const std::set<std::string>& keys,
          Attrs* vals) override;
      virtual int omap_set_val_by_key(const DoutPrefixProvider *dpp, const std::string& key, bufferlist& val,
          bool must_exist, optional_yield y) override;
      virtual int chown(User& new_user, const DoutPrefixProvider* dpp, optional_yield y) override;
    private:
      int read_attrs(const DoutPrefixProvider* dpp, DB::Object::Read &read_op, optional_yield y, rgw_obj* target_obj = nullptr);
  };

  class MPDBSerializer : public StoreMPSerializer {

  public:
    MPDBSerializer(const DoutPrefixProvider *dpp, DBStore* store, DBObject* obj, const std::string& lock_name) {}

    virtual int try_lock(const DoutPrefixProvider *dpp, utime_t dur, optional_yield y) override {return 0; }
    virtual int unlock() override { return 0;}
  };

  class DBAtomicWriter : public StoreWriter {
    protected:
    rgw::sal::DBStore* store;
    const rgw_user& owner;
	const rgw_placement_rule *ptail_placement_rule;
	uint64_t olh_epoch;
	const std::string& unique_tag;
    DBObject obj;
    DB::Object op_target;
    DB::Object::Write parent_op;
    uint64_t total_data_size = 0; /* for total data being uploaded */
    bufferlist head_data;
    bufferlist tail_part_data;
    uint64_t tail_part_offset;
    uint64_t tail_part_size = 0; /* corresponds to each tail part being
                                  written to dbstore */

    public:
    DBAtomicWriter(const DoutPrefixProvider *dpp,
	    	    optional_yield y,
		        rgw::sal::Object* obj,
		        DBStore* _store,
    		    const rgw_user& _owner,
	    	    const rgw_placement_rule *_ptail_placement_rule,
		        uint64_t _olh_epoch,
		        const std::string& _unique_tag);
    ~DBAtomicWriter() = default;

    // prepare to start processing object data
    virtual int prepare(optional_yield y) override;

    // Process a bufferlist
    virtual int process(bufferlist&& data, uint64_t offset) override;

    // complete the operation and make its result visible to clients
    virtual int complete(size_t accounted_size, const std::string& etag,
                         ceph::real_time *mtime, ceph::real_time set_mtime,
                         std::map<std::string, bufferlist>& attrs,
                         ceph::real_time delete_at,
                         const char *if_match, const char *if_nomatch,
                         const std::string *user_data,
                         rgw_zone_set *zones_trace, bool *canceled,
                         optional_yield y,
                         uint32_t flags) override;
  };

  class DBMultipartWriter : public StoreWriter {
  protected:
    rgw::sal::DBStore* store;
    const rgw_user& owner;
	const rgw_placement_rule *ptail_placement_rule;
	uint64_t olh_epoch;
    rgw::sal::Object* head_obj;
    std::string upload_id;
    int part_num;
    std::string oid; /* object->name() + "." + "upload_id" + "." + part_num */
    std::unique_ptr<rgw::sal::Object> meta_obj;
    DB::Object op_target;
    DB::Object::Write parent_op;
    std::string part_num_str;
    uint64_t total_data_size = 0; /* for total data being uploaded */
    bufferlist head_data;
    bufferlist tail_part_data;
    uint64_t tail_part_offset;
    uint64_t tail_part_size = 0; /* corresponds to each tail part being
                                  written to dbstore */

public:
    DBMultipartWriter(const DoutPrefixProvider *dpp,
		       optional_yield y, MultipartUpload* upload,
		       rgw::sal::Object* obj,
		       DBStore* _store,
		       const rgw_user& owner,
		       const rgw_placement_rule *ptail_placement_rule,
		       uint64_t part_num, const std::string& part_num_str);
    ~DBMultipartWriter() = default;

    // prepare to start processing object data
    virtual int prepare(optional_yield y) override;

    // Process a bufferlist
    virtual int process(bufferlist&& data, uint64_t offset) override;

    // complete the operation and make its result visible to clients
    virtual int complete(size_t accounted_size, const std::string& etag,
                       ceph::real_time *mtime, ceph::real_time set_mtime,
                       std::map<std::string, bufferlist>& attrs,
                       ceph::real_time delete_at,
                       const char *if_match, const char *if_nomatch,
                       const std::string *user_data,
                       rgw_zone_set *zones_trace, bool *canceled,
                       optional_yield y,
                       uint32_t flags) override;
  };

  class DBStore : public StoreDriver {
    private:
      /* DBStoreManager is used in case multiple
       * connections are needed one for each tenant.
       */
      DBStoreManager *dbsm;
      /* default db (single connection). If needed
       * multiple db handles (for eg., one for each tenant),
       * use dbsm->getDB(tenant) */
      DB *db;
      DBZone zone;
      RGWSyncModuleInstanceRef sync_module;
      RGWLC* lc;
      CephContext *cct;
      const DoutPrefixProvider *dpp;
      bool use_lc_thread;

    public:
      DBStore(): dbsm(nullptr), zone(this), cct(nullptr), dpp(nullptr),
                 use_lc_thread(false) {}
      ~DBStore() { delete dbsm; }

      DBStore& set_run_lc_thread(bool _use_lc_thread) {
        use_lc_thread = _use_lc_thread;
        return *this;
      }

      virtual int initialize(CephContext *cct, const DoutPrefixProvider *dpp) override;

      virtual const std::string get_name() const override {
        return "dbstore";
      }

      virtual std::unique_ptr<User> get_user(const rgw_user& u) override;
      virtual int get_user_by_access_key(const DoutPrefixProvider *dpp, const std::string& key, optional_yield y, std::unique_ptr<User>* user) override;
      virtual int get_user_by_email(const DoutPrefixProvider *dpp, const std::string& email, optional_yield y, std::unique_ptr<User>* user) override;
      virtual int get_user_by_swift(const DoutPrefixProvider *dpp, const std::string& user_str, optional_yield y, std::unique_ptr<User>* user) override;
      virtual std::unique_ptr<Object> get_object(const rgw_obj_key& k) override;
      virtual std::string get_cluster_id(const DoutPrefixProvider* dpp, optional_yield y);
      virtual int get_bucket(const DoutPrefixProvider *dpp, User* u, const rgw_bucket& b, std::unique_ptr<Bucket>* bucket, optional_yield y) override;
      virtual int get_bucket(User* u, const RGWBucketInfo& i, std::unique_ptr<Bucket>* bucket) override;
      virtual int get_bucket(const DoutPrefixProvider *dpp, User* u, const std::string& tenant, const std::string&name, std::unique_ptr<Bucket>* bucket, optional_yield y) override;
      virtual bool is_meta_master() override;
      virtual int forward_request_to_master(const DoutPrefixProvider *dpp, User* user, obj_version* objv,
          bufferlist& in_data, JSONParser *jp, req_info& info,
          optional_yield y) override;
      virtual int forward_iam_request_to_master(const DoutPrefixProvider *dpp, const RGWAccessKey& key, obj_version* objv,
					     bufferlist& in_data,
					     RGWXMLDecoder::XMLParser* parser, req_info& info,
					     optional_yield y) override;
      virtual Zone* get_zone() { return &zone; }
      virtual std::string zone_unique_id(uint64_t unique_num) override;
      virtual std::string zone_unique_trans_id(const uint64_t unique_num) override;
      virtual int get_zonegroup(const std::string& id, std::unique_ptr<ZoneGroup>* zonegroup) override;
      virtual int list_all_zones(const DoutPrefixProvider* dpp, std::list<std::string>& zone_ids) override;
      virtual int cluster_stat(RGWClusterStat& stats) override;
      virtual std::unique_ptr<Lifecycle> get_lifecycle(void) override;
      virtual std::unique_ptr<Completions> get_completions(void) override;

  virtual std::unique_ptr<Notification> get_notification(
    rgw::sal::Object* obj, rgw::sal::Object* src_obj, req_state* s,
    rgw::notify::EventType event_type, optional_yield y, const std::string* object_name) override;

  virtual std::unique_ptr<Notification> get_notification(
    const DoutPrefixProvider* dpp, rgw::sal::Object* obj,
    rgw::sal::Object* src_obj,
    rgw::notify::EventType event_type, rgw::sal::Bucket* _bucket,
    std::string& _user_id, std::string& _user_tenant, std::string& _req_id,
    optional_yield y) override;

      virtual RGWLC* get_rgwlc(void) override;
      virtual RGWCoroutinesManagerRegistry* get_cr_registry() override { return NULL; }
      virtual int log_usage(const DoutPrefixProvider *dpp, std::map<rgw_user_bucket, RGWUsageBatch>& usage_info) override;
      virtual int log_op(const DoutPrefixProvider *dpp, std::string& oid, bufferlist& bl) override;
      virtual int register_to_service_map(const DoutPrefixProvider *dpp, const std::string& daemon_type,
          const std::map<std::string, std::string>& meta) override;
      virtual void get_ratelimit(RGWRateLimitInfo& bucket_ratelimit, RGWRateLimitInfo& user_ratelimit, RGWRateLimitInfo& anon_ratelimit) override;
      virtual void get_quota(RGWQuota& quota) override;
    virtual int set_buckets_enabled(const DoutPrefixProvider *dpp, std::vector<rgw_bucket>& buckets, bool enabled) override;
      virtual int get_sync_policy_handler(const DoutPrefixProvider *dpp,
          std::optional<rgw_zone_id> zone,
          std::optional<rgw_bucket> bucket,
          RGWBucketSyncPolicyHandlerRef *phandler,
          optional_yield y) override;
      virtual RGWDataSyncStatusManager* get_data_sync_manager(const rgw_zone_id& source_zone) override;
      virtual void wakeup_meta_sync_shards(std::set<int>& shard_ids) override { return; }
      virtual void wakeup_data_sync_shards(const DoutPrefixProvider *dpp,
					   const rgw_zone_id& source_zone,
					   boost::container::flat_map<
					     int,
					   boost::container::flat_set<rgw_data_notify_entry>>& shard_ids) override { return; }
      virtual int clear_usage(const DoutPrefixProvider *dpp) override { return 0; }
      virtual int read_all_usage(const DoutPrefixProvider *dpp, uint64_t start_epoch, uint64_t end_epoch,
          uint32_t max_entries, bool *is_truncated,
          RGWUsageIter& usage_iter,
          std::map<rgw_user_bucket, rgw_usage_log_entry>& usage) override;
      virtual int trim_all_usage(const DoutPrefixProvider *dpp, uint64_t start_epoch, uint64_t end_epoch) override;
      virtual int get_config_key_val(std::string name, bufferlist* bl) override;
      virtual int meta_list_keys_init(const DoutPrefixProvider *dpp, const std::string& section, const std::string& marker, void** phandle) override;
      virtual int meta_list_keys_next(const DoutPrefixProvider *dpp, void* handle, int max, std::list<std::string>& keys, bool* truncated) override;
      virtual void meta_list_keys_complete(void* handle) override;
      virtual std::string meta_get_marker(void *handle) override;
      virtual int meta_remove(const DoutPrefixProvider *dpp, std::string& metadata_key, optional_yield y) override;

      virtual const RGWSyncModuleInstanceRef& get_sync_module() { return sync_module; }
      virtual std::string get_host_id() { return ""; }

      virtual std::unique_ptr<LuaManager> get_lua_manager() override;
      virtual std::unique_ptr<RGWRole> get_role(std::string name,
          std::string tenant,
          std::string path="",
          std::string trust_policy="",
          std::string max_session_duration_str="",
          std::multimap<std::string,std::string> tags={}) override;
      virtual std::unique_ptr<RGWRole> get_role(std::string id) override;
      virtual std::unique_ptr<RGWRole> get_role(const RGWRoleInfo& info) override;
      virtual int get_roles(const DoutPrefixProvider *dpp,
          optional_yield y,
          const std::string& path_prefix,
          const std::string& tenant,
          std::vector<std::unique_ptr<RGWRole>>& roles) override;
      virtual std::unique_ptr<RGWOIDCProvider> get_oidc_provider() override;
      virtual int get_oidc_providers(const DoutPrefixProvider *dpp,
          const std::string& tenant,
          std::vector<std::unique_ptr<RGWOIDCProvider>>& providers) override;
      virtual std::unique_ptr<Writer> get_append_writer(const DoutPrefixProvider *dpp,
				  optional_yield y,
				  rgw::sal::Object* obj,
				  const rgw_user& owner,
				  const rgw_placement_rule *ptail_placement_rule,
				  const std::string& unique_tag,
				  uint64_t position,
				  uint64_t *cur_accounted_size) override;
      virtual std::unique_ptr<Writer> get_atomic_writer(const DoutPrefixProvider *dpp,
				  optional_yield y,
				  rgw::sal::Object* obj,
				  const rgw_user& owner,
				  const rgw_placement_rule *ptail_placement_rule,
				  uint64_t olh_epoch,
				  const std::string& unique_tag) override;

      virtual const std::string& get_compression_type(const rgw_placement_rule& rule) override;
      virtual bool valid_placement(const rgw_placement_rule& rule) override;

      virtual void finalize(void) override;

      virtual CephContext *ctx(void) override {
        return db->ctx();
      }

      virtual void register_admin_apis(RGWRESTMgr* mgr) override { };

      /* Unique to DBStore */
      void setDBStoreManager(DBStoreManager *stm) { dbsm = stm; }
      DBStoreManager *getDBStoreManager(void) { return dbsm; }

      void setDB(DB * st) { db = st; }
      DB *getDB(void) { return db; }

      DB *getDB(std::string tenant) { return dbsm->getDB(tenant, false); }
  };

} } // namespace rgw::sal