summary refs log tree commit diff
path: root/synapse/storage/group_server.py
blob: a7a43de279b16a64eba8c0b0cf95a1ac7c6e2be4 (plain) (blame)
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
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
# -*- coding: utf-8 -*-
# Copyright 2017 Vector Creations Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from twisted.internet import defer

from synapse.api.errors import SynapseError

from ._base import SQLBaseStore

import ujson as json


# The category ID for the "default" category. We don't store as null in the
# database to avoid the fun of null != null
_DEFAULT_CATEGORY_ID = ""
_DEFAULT_ROLE_ID = ""


class GroupServerStore(SQLBaseStore):
    def get_group(self, group_id):
        return self._simple_select_one(
            table="groups",
            keyvalues={
                "group_id": group_id,
            },
            retcols=(
                "name", "short_description", "long_description", "avatar_url", "is_public"
            ),
            allow_none=True,
            desc="is_user_in_group",
        )

    def get_users_in_group(self, group_id, include_private=False):
        # TODO: Pagination

        keyvalues = {
            "group_id": group_id,
        }
        if not include_private:
            keyvalues["is_public"] = True

        return self._simple_select_list(
            table="group_users",
            keyvalues=keyvalues,
            retcols=("user_id", "is_public",),
            desc="get_users_in_group",
        )

    def get_invited_users_in_group(self, group_id):
        # TODO: Pagination

        return self._simple_select_onecol(
            table="group_invites",
            keyvalues={
                "group_id": group_id,
            },
            retcol="user_id",
            desc="get_invited_users_in_group",
        )

    def get_rooms_in_group(self, group_id, include_private=False):
        # TODO: Pagination

        keyvalues = {
            "group_id": group_id,
        }
        if not include_private:
            keyvalues["is_public"] = True

        return self._simple_select_list(
            table="group_rooms",
            keyvalues=keyvalues,
            retcols=("room_id", "is_public",),
            desc="get_rooms_in_group",
        )

    def get_rooms_for_summary_by_category(self, group_id, include_private=False):
        """Get the rooms and categories that should be included in a summary request

        Returns ([rooms], [categories])
        """
        def _get_rooms_for_summary_txn(txn):
            keyvalues = {
                "group_id": group_id,
            }
            if not include_private:
                keyvalues["is_public"] = True

            sql = """
                SELECT room_id, is_public, category_id, room_order
                FROM group_summary_rooms
                WHERE group_id = ?
            """

            if not include_private:
                sql += " AND is_public = ?"
                txn.execute(sql, (group_id, True))
            else:
                txn.execute(sql, (group_id,))

            rooms = [
                {
                    "room_id": row[0],
                    "is_public": row[1],
                    "category_id": row[2] if row[2] != _DEFAULT_CATEGORY_ID else None,
                    "order": row[3],
                }
                for row in txn
            ]

            sql = """
                SELECT category_id, is_public, profile, cat_order
                FROM group_summary_room_categories
                INNER JOIN group_room_categories USING (group_id, category_id)
                WHERE group_id = ?
            """

            if not include_private:
                sql += " AND is_public = ?"
                txn.execute(sql, (group_id, True))
            else:
                txn.execute(sql, (group_id,))

            categories = {
                row[0]: {
                    "is_public": row[1],
                    "profile": json.loads(row[2]),
                    "order": row[3],
                }
                for row in txn
            }

            return rooms, categories
        return self.runInteraction(
            "get_rooms_for_summary", _get_rooms_for_summary_txn
        )

    def add_room_to_summary(self, group_id, room_id, category_id, order, is_public):
        return self.runInteraction(
            "add_room_to_summary", self._add_room_to_summary_txn,
            group_id, room_id, category_id, order, is_public,
        )

    def _add_room_to_summary_txn(self, txn, group_id, room_id, category_id, order,
                                 is_public):
        """Add (or update) room's entry in summary.

        Args:
            group_id (str)
            room_id (str)
            category_id (str): If not None then adds the category to the end of
                the summary if its not already there. [Optional]
            order (int): If not None inserts the room at that position, e.g.
                an order of 1 will put the room first. Otherwise, the room gets
                added to the end.
        """
        room_in_group = self._simple_select_one_onecol_txn(
            txn,
            table="group_rooms",
            keyvalues={
                "group_id": group_id,
                "room_id": room_id,
            },
            retcol="room_id",
            allow_none=True,
        )
        if not room_in_group:
            raise SynapseError(400, "room not in group")

        if category_id is None:
            category_id = _DEFAULT_CATEGORY_ID
        else:
            cat_exists = self._simple_select_one_onecol_txn(
                txn,
                table="group_room_categories",
                keyvalues={
                    "group_id": group_id,
                    "category_id": category_id,
                },
                retcol="group_id",
                allow_none=True,
            )
            if not cat_exists:
                raise SynapseError(400, "Category doesn't exist")

            # TODO: Check category is part of summary already
            cat_exists = self._simple_select_one_onecol_txn(
                txn,
                table="group_summary_room_categories",
                keyvalues={
                    "group_id": group_id,
                    "category_id": category_id,
                },
                retcol="group_id",
                allow_none=True,
            )
            if not cat_exists:
                # If not, add it with an order larger than all others
                txn.execute("""
                    INSERT INTO group_summary_room_categories
                    (group_id, category_id, cat_order)
                    SELECT ?, ?, COALESCE(MAX(cat_order), 0) + 1
                    FROM group_summary_room_categories
                    WHERE group_id = ? AND category_id = ?
                """, (group_id, category_id, group_id, category_id))

        existing = self._simple_select_one_txn(
            txn,
            table="group_summary_rooms",
            keyvalues={
                "group_id": group_id,
                "room_id": room_id,
                "category_id": category_id,
            },
            retcols=("room_order", "is_public",),
            allow_none=True,
        )

        if order is not None:
            # Shuffle other room orders that come after the given order
            sql = """
                UPDATE group_summary_rooms SET room_order = room_order + 1
                WHERE group_id = ? AND category_id = ? AND room_order >= ?
            """
            txn.execute(sql, (group_id, category_id, order,))
        elif not existing:
            sql = """
                SELECT COALESCE(MAX(room_order), 0) + 1 FROM group_summary_rooms
                WHERE group_id = ? AND category_id = ?
            """
            txn.execute(sql, (group_id, category_id,))
            order, = txn.fetchone()

        if existing:
            to_update = {}
            if order is not None:
                to_update["room_order"] = order
            if is_public is not None:
                to_update["is_public"] = is_public
            self._simple_update_txn(
                txn,
                table="group_summary_rooms",
                keyvalues={
                    "group_id": group_id,
                    "category_id": category_id,
                    "room_id": room_id,
                },
                values=to_update,
            )
        else:
            if is_public is None:
                is_public = True

            self._simple_insert_txn(
                txn,
                table="group_summary_rooms",
                values={
                    "group_id": group_id,
                    "category_id": category_id,
                    "room_id": room_id,
                    "room_order": order,
                    "is_public": is_public,
                },
            )

    def remove_room_from_summary(self, group_id, room_id, category_id):
        if category_id is None:
            category_id = _DEFAULT_CATEGORY_ID

        return self._simple_delete(
            table="group_summary_rooms",
            keyvalues={
                "group_id": group_id,
                "category_id": category_id,
                "room_id": room_id,
            },
            desc="remove_room_from_summary",
        )

    @defer.inlineCallbacks
    def get_group_categories(self, group_id):
        rows = yield self._simple_select_list(
            table="group_room_categories",
            keyvalues={
                "group_id": group_id,
            },
            retcols=("category_id", "is_public", "profile"),
            desc="get_group_categories",
        )

        defer.returnValue({
            row["category_id"]: {
                "is_public": row["is_public"],
                "profile": json.loads(row["profile"]),
            }
            for row in rows
        })

    @defer.inlineCallbacks
    def get_group_category(self, group_id, category_id):
        category = yield self._simple_select_one(
            table="group_room_categories",
            keyvalues={
                "group_id": group_id,
                "category_id": category_id,
            },
            retcols=("is_public", "profile"),
            desc="get_group_category",
        )

        category["profile"] = json.loads(category["profile"])

        defer.returnValue(category)

    def upsert_group_category(self, group_id, category_id, profile, is_public):
        """Add/update room category for group
        """
        insertion_values = {}
        update_values = {"category_id": category_id}  # This cannot be empty

        if profile is None:
            insertion_values["profile"] = "{}"
        else:
            update_values["profile"] = json.dumps(profile)

        if is_public is None:
            insertion_values["is_public"] = True
        else:
            update_values["is_public"] = is_public

        return self._simple_upsert(
            table="group_room_categories",
            keyvalues={
                "group_id": group_id,
                "category_id": category_id,
            },
            values=update_values,
            insertion_values=insertion_values,
            desc="upsert_group_category",
        )

    def remove_group_category(self, group_id, category_id):
        return self._simple_delete(
            table="group_room_categories",
            keyvalues={
                "group_id": group_id,
                "category_id": category_id,
            },
            desc="remove_group_category",
        )

    @defer.inlineCallbacks
    def get_group_roles(self, group_id):
        rows = yield self._simple_select_list(
            table="group_roles",
            keyvalues={
                "group_id": group_id,
            },
            retcols=("role_id", "is_public", "profile"),
            desc="get_group_roles",
        )

        defer.returnValue({
            row["role_id"]: {
                "is_public": row["is_public"],
                "profile": json.loads(row["profile"]),
            }
            for row in rows
        })

    @defer.inlineCallbacks
    def get_group_role(self, group_id, role_id):
        role = yield self._simple_select_one(
            table="group_roles",
            keyvalues={
                "group_id": group_id,
                "role_id": role_id,
            },
            retcols=("is_public", "profile"),
            desc="get_group_role",
        )

        role["profile"] = json.loads(role["profile"])

        defer.returnValue(role)

    def upsert_group_role(self, group_id, role_id, profile, is_public):
        """Add/remove user role
        """
        insertion_values = {}
        update_values = {"role_id": role_id}  # This cannot be empty

        if profile is None:
            insertion_values["profile"] = "{}"
        else:
            update_values["profile"] = json.dumps(profile)

        if is_public is None:
            insertion_values["is_public"] = True
        else:
            update_values["is_public"] = is_public

        return self._simple_upsert(
            table="group_roles",
            keyvalues={
                "group_id": group_id,
                "role_id": role_id,
            },
            values=update_values,
            insertion_values=insertion_values,
            desc="upsert_group_role",
        )

    def remove_group_role(self, group_id, role_id):
        return self._simple_delete(
            table="group_roles",
            keyvalues={
                "group_id": group_id,
                "role_id": role_id,
            },
            desc="remove_group_role",
        )

    def add_user_to_summary(self, group_id, user_id, role_id, order, is_public):
        return self.runInteraction(
            "add_user_to_summary", self._add_user_to_summary_txn,
            group_id, user_id, role_id, order, is_public,
        )

    def _add_user_to_summary_txn(self, txn, group_id, user_id, role_id, order,
                                 is_public):
        """Add (or update) user's entry in summary.

        Args:
            group_id (str)
            user_id (str)
            role_id (str): If not None then adds the role to the end of
                the summary if its not already there. [Optional]
            order (int): If not None inserts the user at that position, e.g.
                an order of 1 will put the user first. Otherwise, the user gets
                added to the end.
        """
        user_in_group = self._simple_select_one_onecol_txn(
            txn,
            table="group_users",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            retcol="user_id",
            allow_none=True,
        )
        if not user_in_group:
            raise SynapseError(400, "user not in group")

        if role_id is None:
            role_id = _DEFAULT_ROLE_ID
        else:
            role_exists = self._simple_select_one_onecol_txn(
                txn,
                table="group_roles",
                keyvalues={
                    "group_id": group_id,
                    "role_id": role_id,
                },
                retcol="group_id",
                allow_none=True,
            )
            if not role_exists:
                raise SynapseError(400, "Role doesn't exist")

            # TODO: Check role is part of the summary already
            role_exists = self._simple_select_one_onecol_txn(
                txn,
                table="group_summary_roles",
                keyvalues={
                    "group_id": group_id,
                    "role_id": role_id,
                },
                retcol="group_id",
                allow_none=True,
            )
            if not role_exists:
                # If not, add it with an order larger than all others
                txn.execute("""
                    INSERT INTO group_summary_roles
                    (group_id, role_id, role_order)
                    SELECT ?, ?, COALESCE(MAX(role_order), 0) + 1
                    FROM group_summary_roles
                    WHERE group_id = ? AND role_id = ?
                """, (group_id, role_id, group_id, role_id))

        existing = self._simple_select_one_txn(
            txn,
            table="group_summary_users",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
                "role_id": role_id,
            },
            retcols=("user_order", "is_public",),
            allow_none=True,
        )

        if order is not None:
            # Shuffle other users orders that come after the given order
            sql = """
                UPDATE group_summary_users SET user_order = user_order + 1
                WHERE group_id = ? AND role_id = ? AND user_order >= ?
            """
            txn.execute(sql, (group_id, role_id, order,))
        elif not existing:
            sql = """
                SELECT COALESCE(MAX(user_order), 0) + 1 FROM group_summary_users
                WHERE group_id = ? AND role_id = ?
            """
            txn.execute(sql, (group_id, role_id,))
            order, = txn.fetchone()

        if existing:
            to_update = {}
            if order is not None:
                to_update["user_order"] = order
            if is_public is not None:
                to_update["is_public"] = is_public
            self._simple_update_txn(
                txn,
                table="group_summary_users",
                keyvalues={
                    "group_id": group_id,
                    "role_id": role_id,
                    "user_id": user_id,
                },
                values=to_update,
            )
        else:
            if is_public is None:
                is_public = True

            self._simple_insert_txn(
                txn,
                table="group_summary_users",
                values={
                    "group_id": group_id,
                    "role_id": role_id,
                    "user_id": user_id,
                    "user_order": order,
                    "is_public": is_public,
                },
            )

    def remove_user_from_summary(self, group_id, user_id, role_id):
        if role_id is None:
            role_id = _DEFAULT_ROLE_ID

        return self._simple_delete(
            table="group_summary_users",
            keyvalues={
                "group_id": group_id,
                "role_id": role_id,
                "user_id": user_id,
            },
            desc="remove_user_from_summary",
        )

    def get_users_for_summary_by_role(self, group_id, include_private=False):
        """Get the users and roles that should be included in a summary request

        Returns ([users], [roles])
        """
        def _get_users_for_summary_txn(txn):
            keyvalues = {
                "group_id": group_id,
            }
            if not include_private:
                keyvalues["is_public"] = True

            sql = """
                SELECT user_id, is_public, role_id, user_order
                FROM group_summary_users
                WHERE group_id = ?
            """

            if not include_private:
                sql += " AND is_public = ?"
                txn.execute(sql, (group_id, True))
            else:
                txn.execute(sql, (group_id,))

            users = [
                {
                    "user_id": row[0],
                    "is_public": row[1],
                    "role_id": row[2] if row[2] != _DEFAULT_ROLE_ID else None,
                    "order": row[3],
                }
                for row in txn
            ]

            sql = """
                SELECT role_id, is_public, profile, role_order
                FROM group_summary_roles
                INNER JOIN group_roles USING (group_id, role_id)
                WHERE group_id = ?
            """

            if not include_private:
                sql += " AND is_public = ?"
                txn.execute(sql, (group_id, True))
            else:
                txn.execute(sql, (group_id,))

            roles = {
                row[0]: {
                    "is_public": row[1],
                    "profile": json.loads(row[2]),
                    "order": row[3],
                }
                for row in txn
            }

            return users, roles
        return self.runInteraction(
            "get_users_for_summary_by_role", _get_users_for_summary_txn
        )

    def is_user_in_group(self, user_id, group_id):
        return self._simple_select_one_onecol(
            table="group_users",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            retcol="user_id",
            allow_none=True,
            desc="is_user_in_group",
        ).addCallback(lambda r: bool(r))

    def is_user_admin_in_group(self, group_id, user_id):
        return self._simple_select_one_onecol(
            table="group_users",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            retcol="is_admin",
            allow_none=True,
            desc="is_user_admin_in_group",
        )

    def add_group_invite(self, group_id, user_id):
        """Record that the group server has invited a user
        """
        return self._simple_insert(
            table="group_invites",
            values={
                "group_id": group_id,
                "user_id": user_id,
            },
            desc="add_group_invite",
        )

    def is_user_invited_to_local_group(self, group_id, user_id):
        """Has the group server invited a user?
        """
        return self._simple_select_one_onecol(
            table="group_invites",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            retcol="user_id",
            desc="is_user_invited_to_local_group",
            allow_none=True,
        )

    def get_users_membership_info_in_group(self, group_id, user_id):
        """Get a dict describing the membership of a user in a group.

        Example if joined:

            {
                "membership": "join",
                "is_public": True,
                "is_privileged": False,
            }

        Returns an empty dict if the user is not join/invite/etc
        """
        def _get_users_membership_in_group_txn(txn):
            row = self._simple_select_one_txn(
                txn,
                table="group_users",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
                retcols=("is_admin", "is_public"),
                allow_none=True,
            )

            if row:
                return {
                    "membership": "join",
                    "is_public": row["is_public"],
                    "is_privileged": row["is_admin"],
                }

            row = self._simple_select_one_onecol_txn(
                txn,
                table="group_invites",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
                retcol="user_id",
                allow_none=True,
            )

            if row:
                return {
                    "membership": "invite",
                }

            return {}

        return self.runInteraction(
            "get_users_membership_info_in_group", _get_users_membership_in_group_txn,
        )

    def add_user_to_group(self, group_id, user_id, is_admin=False, is_public=True,
                          local_attestation=None, remote_attestation=None):
        """Add a user to the group server.

        Args:
            group_id (str)
            user_id (str)
            is_admin (bool)
            is_public (bool)
            local_attestation (dict): The attestation the GS created to give
                to the remote server. Optional if the user and group are on the
                same server
            remote_attestation (dict): The attestation given to GS by remote
                server. Optional if the user and group are on the same server
        """
        def _add_user_to_group_txn(txn):
            self._simple_insert_txn(
                txn,
                table="group_users",
                values={
                    "group_id": group_id,
                    "user_id": user_id,
                    "is_admin": is_admin,
                    "is_public": is_public,
                },
            )

            self._simple_delete_txn(
                txn,
                table="group_invites",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
            )

            if local_attestation:
                self._simple_insert_txn(
                    txn,
                    table="group_attestations_renewals",
                    values={
                        "group_id": group_id,
                        "user_id": user_id,
                        "valid_until_ms": local_attestation["valid_until_ms"],
                    },
                )
            if remote_attestation:
                self._simple_insert_txn(
                    txn,
                    table="group_attestations_remote",
                    values={
                        "group_id": group_id,
                        "user_id": user_id,
                        "valid_until_ms": remote_attestation["valid_until_ms"],
                        "attestation_json": json.dumps(remote_attestation),
                    },
                )

        return self.runInteraction(
            "add_user_to_group", _add_user_to_group_txn
        )

    def remove_user_from_group(self, group_id, user_id):
        def _remove_user_from_group_txn(txn):
            self._simple_delete_txn(
                txn,
                table="group_users",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
            )
            self._simple_delete_txn(
                txn,
                table="group_invites",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
            )
            self._simple_delete_txn(
                txn,
                table="group_attestations_renewals",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
            )
            self._simple_delete_txn(
                txn,
                table="group_attestations_remote",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
            )
            self._simple_delete_txn(
                txn,
                table="group_summary_users",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
            )
        return self.runInteraction("remove_user_from_group", _remove_user_from_group_txn)

    def update_room_group_association(self, group_id, room_id, is_public=True):
        return self._simple_upsert(
            table="group_rooms",
            keyvalues={
                "group_id": group_id,
                "room_id": room_id,
            },
            values={
                "is_public": is_public,
            },
            insertion_values={
                "group_id": group_id,
                "room_id": room_id,
            },
            desc="update_room_group_association",
        )

    def delete_room_group_association(self, group_id, room_id):
        def _delete_room_group_association_txn(txn):
            self._simple_delete_txn(
                txn,
                table="group_rooms",
                keyvalues={
                    "group_id": group_id,
                    "room_id": room_id,
                },
            )

            self._simple_delete_txn(
                txn,
                table="group_summary_rooms",
                keyvalues={
                    "group_id": group_id,
                    "room_id": room_id,
                },
            )
        return self.runInteraction(
            "delete_room_group_association", _delete_room_group_association_txn,
        )

    def get_publicised_groups_for_user(self, user_id):
        """Get all groups a user is publicising
        """
        return self._simple_select_onecol(
            table="local_group_membership",
            keyvalues={
                "user_id": user_id,
                "membership": "join",
                "is_publicised": True,
            },
            retcol="group_id",
            desc="get_publicised_groups_for_user",
        )

    def update_group_publicity(self, group_id, user_id, publicise):
        """Update whether the user is publicising their membership of the group
        """
        return self._simple_update_one(
            table="local_group_membership",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            updatevalues={
                "is_publicised": publicise,
            },
            desc="update_group_publicity"
        )

    @defer.inlineCallbacks
    def register_user_group_membership(self, group_id, user_id, membership,
                                       is_admin=False, content={},
                                       local_attestation=None,
                                       remote_attestation=None,
                                       is_publicised=False,
                                       ):
        """Registers that a local user is a member of a (local or remote) group.

        Args:
            group_id (str)
            user_id (str)
            membership (str)
            is_admin (bool)
            content (dict): Content of the membership, e.g. includes the inviter
                if the user has been invited.
            local_attestation (dict): If remote group then store the fact that we
                have given out an attestation, else None.
            remote_attestation (dict): If remote group then store the remote
                attestation from the group, else None.
        """
        def _register_user_group_membership_txn(txn, next_id):
            # TODO: Upsert?
            self._simple_delete_txn(
                txn,
                table="local_group_membership",
                keyvalues={
                    "group_id": group_id,
                    "user_id": user_id,
                },
            )
            self._simple_insert_txn(
                txn,
                table="local_group_membership",
                values={
                    "group_id": group_id,
                    "user_id": user_id,
                    "is_admin": is_admin,
                    "membership": membership,
                    "is_publicised": is_publicised,
                    "content": json.dumps(content),
                },
            )

            self._simple_insert_txn(
                txn,
                table="local_group_updates",
                values={
                    "stream_id": next_id,
                    "group_id": group_id,
                    "user_id": user_id,
                    "type": "membership",
                    "content": json.dumps({"membership": membership, "content": content}),
                }
            )
            self._group_updates_stream_cache.entity_has_changed(user_id, next_id)

            # TODO: Insert profile to ensure it comes down stream if its a join.

            if membership == "join":
                if local_attestation:
                    self._simple_insert_txn(
                        txn,
                        table="group_attestations_renewals",
                        values={
                            "group_id": group_id,
                            "user_id": user_id,
                            "valid_until_ms": local_attestation["valid_until_ms"],
                        }
                    )
                if remote_attestation:
                    self._simple_insert_txn(
                        txn,
                        table="group_attestations_remote",
                        values={
                            "group_id": group_id,
                            "user_id": user_id,
                            "valid_until_ms": remote_attestation["valid_until_ms"],
                            "attestation_json": json.dumps(remote_attestation),
                        }
                    )
            else:
                self._simple_delete_txn(
                    txn,
                    table="group_attestations_renewals",
                    keyvalues={
                        "group_id": group_id,
                        "user_id": user_id,
                    },
                )
                self._simple_delete_txn(
                    txn,
                    table="group_attestations_remote",
                    keyvalues={
                        "group_id": group_id,
                        "user_id": user_id,
                    },
                )

            return next_id

        with self._group_updates_id_gen.get_next() as next_id:
            res = yield self.runInteraction(
                "register_user_group_membership",
                _register_user_group_membership_txn, next_id,
            )
        defer.returnValue(res)

    @defer.inlineCallbacks
    def create_group(self, group_id, user_id, name, avatar_url, short_description,
                     long_description,):
        yield self._simple_insert(
            table="groups",
            values={
                "group_id": group_id,
                "name": name,
                "avatar_url": avatar_url,
                "short_description": short_description,
                "long_description": long_description,
                "is_public": True,
            },
            desc="create_group",
        )

    @defer.inlineCallbacks
    def update_group_profile(self, group_id, profile,):
        yield self._simple_update_one(
            table="groups",
            keyvalues={
                "group_id": group_id,
            },
            updatevalues=profile,
            desc="update_group_profile",
        )

    def get_attestations_need_renewals(self, valid_until_ms):
        """Get all attestations that need to be renewed until givent time
        """
        def _get_attestations_need_renewals_txn(txn):
            sql = """
                SELECT group_id, user_id FROM group_attestations_renewals
                WHERE valid_until_ms <= ?
            """
            txn.execute(sql, (valid_until_ms,))
            return self.cursor_to_dict(txn)
        return self.runInteraction(
            "get_attestations_need_renewals", _get_attestations_need_renewals_txn
        )

    def update_attestation_renewal(self, group_id, user_id, attestation):
        """Update an attestation that we have renewed
        """
        return self._simple_update_one(
            table="group_attestations_renewals",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            updatevalues={
                "valid_until_ms": attestation["valid_until_ms"],
            },
            desc="update_attestation_renewal",
        )

    def update_remote_attestion(self, group_id, user_id, attestation):
        """Update an attestation that a remote has renewed
        """
        return self._simple_update_one(
            table="group_attestations_remote",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            updatevalues={
                "valid_until_ms": attestation["valid_until_ms"],
                "attestation_json": json.dumps(attestation)
            },
            desc="update_remote_attestion",
        )

    def remove_attestation_renewal(self, group_id, user_id):
        """Remove an attestation that we thought we should renew, but actually
        shouldn't. Ideally this would never get called as we would never
        incorrectly try and do attestations for local users on local groups.

        Args:
            group_id (str)
            user_id (str)
        """
        return self._simple_delete(
            table="group_attestations_renewals",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            desc="remove_attestation_renewal",
        )

    @defer.inlineCallbacks
    def get_remote_attestation(self, group_id, user_id):
        """Get the attestation that proves the remote agrees that the user is
        in the group.
        """
        row = yield self._simple_select_one(
            table="group_attestations_remote",
            keyvalues={
                "group_id": group_id,
                "user_id": user_id,
            },
            retcols=("valid_until_ms", "attestation_json"),
            desc="get_remote_attestation",
            allow_none=True,
        )

        now = int(self._clock.time_msec())
        if row and now < row["valid_until_ms"]:
            defer.returnValue(json.loads(row["attestation_json"]))

        defer.returnValue(None)

    def get_joined_groups(self, user_id):
        return self._simple_select_onecol(
            table="local_group_membership",
            keyvalues={
                "user_id": user_id,
                "membership": "join",
            },
            retcol="group_id",
            desc="get_joined_groups",
        )

    def get_all_groups_for_user(self, user_id, now_token):
        def _get_all_groups_for_user_txn(txn):
            sql = """
                SELECT group_id, type, membership, u.content
                FROM local_group_updates AS u
                INNER JOIN local_group_membership USING (group_id, user_id)
                WHERE user_id = ? AND membership != 'leave'
                    AND stream_id <= ?
            """
            txn.execute(sql, (user_id, now_token,))
            return [
                {
                    "group_id": row[0],
                    "type": row[1],
                    "membership": row[2],
                    "content": json.loads(row[3]),
                }
                for row in txn
            ]
        return self.runInteraction(
            "get_all_groups_for_user", _get_all_groups_for_user_txn,
        )

    def get_groups_changes_for_user(self, user_id, from_token, to_token):
        from_token = int(from_token)
        has_changed = self._group_updates_stream_cache.has_entity_changed(
            user_id, from_token,
        )
        if not has_changed:
            return []

        def _get_groups_changes_for_user_txn(txn):
            sql = """
                SELECT group_id, membership, type, u.content
                FROM local_group_updates AS u
                INNER JOIN local_group_membership USING (group_id, user_id)
                WHERE user_id = ? AND ? < stream_id AND stream_id <= ?
            """
            txn.execute(sql, (user_id, from_token, to_token,))
            return [{
                "group_id": group_id,
                "membership": membership,
                "type": gtype,
                "content": json.loads(content_json),
            } for group_id, membership, gtype, content_json in txn]
        return self.runInteraction(
            "get_groups_changes_for_user", _get_groups_changes_for_user_txn,
        )

    def get_all_groups_changes(self, from_token, to_token, limit):
        from_token = int(from_token)
        has_changed = self._group_updates_stream_cache.has_any_entity_changed(
            from_token,
        )
        if not has_changed:
            return []

        def _get_all_groups_changes_txn(txn):
            sql = """
                SELECT stream_id, group_id, user_id, type, content
                FROM local_group_updates
                WHERE ? < stream_id AND stream_id <= ?
                LIMIT ?
            """
            txn.execute(sql, (from_token, to_token, limit,))
            return [(
                stream_id,
                group_id,
                user_id,
                gtype,
                json.loads(content_json),
            ) for stream_id, group_id, user_id, gtype, content_json in txn]
        return self.runInteraction(
            "get_all_groups_changes", _get_all_groups_changes_txn,
        )

    def get_group_stream_token(self):
        return self._group_updates_id_gen.get_current_token()