summary refs log tree commit diff
path: root/synapse/storage/databases/main/pusher.py
blob: 40fd781a6ab1b41b3c623f39cbeec03ae4335cc8 (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
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2018 New Vector 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.

import logging
from typing import (
    TYPE_CHECKING,
    Any,
    Dict,
    Iterable,
    Iterator,
    List,
    Optional,
    Tuple,
    cast,
)

from synapse.push import PusherConfig, ThrottleParams
from synapse.replication.tcp.streams import PushersStream
from synapse.storage._base import SQLBaseStore, db_to_json
from synapse.storage.database import (
    DatabasePool,
    LoggingDatabaseConnection,
    LoggingTransaction,
)
from synapse.storage.util.id_generators import (
    AbstractStreamIdGenerator,
    AbstractStreamIdTracker,
    StreamIdGenerator,
)
from synapse.types import JsonDict
from synapse.util import json_encoder
from synapse.util.caches.descriptors import cached

if TYPE_CHECKING:
    from synapse.server import HomeServer

logger = logging.getLogger(__name__)


class PusherWorkerStore(SQLBaseStore):
    def __init__(
        self,
        database: DatabasePool,
        db_conn: LoggingDatabaseConnection,
        hs: "HomeServer",
    ):
        super().__init__(database, db_conn, hs)

        # In the worker store this is an ID tracker which we overwrite in the non-worker
        # class below that is used on the main process.
        self._pushers_id_gen: AbstractStreamIdTracker = StreamIdGenerator(
            db_conn,
            "pushers",
            "id",
            extra_tables=[("deleted_pushers", "stream_id")],
            is_writer=hs.config.worker.worker_app is None,
        )

        self.db_pool.updates.register_background_update_handler(
            "remove_deactivated_pushers",
            self._remove_deactivated_pushers,
        )

        self.db_pool.updates.register_background_update_handler(
            "remove_stale_pushers",
            self._remove_stale_pushers,
        )

        self.db_pool.updates.register_background_update_handler(
            "remove_deleted_email_pushers",
            self._remove_deleted_email_pushers,
        )

    def _decode_pushers_rows(self, rows: Iterable[dict]) -> Iterator[PusherConfig]:
        """JSON-decode the data in the rows returned from the `pushers` table

        Drops any rows whose data cannot be decoded
        """
        for r in rows:
            data_json = r["data"]
            try:
                r["data"] = db_to_json(data_json)
            except Exception as e:
                logger.warning(
                    "Invalid JSON in data for pusher %d: %s, %s",
                    r["id"],
                    data_json,
                    e.args[0],
                )
                continue

            # If we're using SQLite, then boolean values are integers. This is
            # troublesome since some code using the return value of this method might
            # expect it to be a boolean, or will expose it to clients (in responses).
            r["enabled"] = bool(r["enabled"])

            yield PusherConfig(**r)

    def get_pushers_stream_token(self) -> int:
        return self._pushers_id_gen.get_current_token()

    def process_replication_rows(
        self, stream_name: str, instance_name: str, token: int, rows: Iterable[Any]
    ) -> None:
        if stream_name == PushersStream.NAME:
            self._pushers_id_gen.advance(instance_name, token)
        return super().process_replication_rows(stream_name, instance_name, token, rows)

    async def get_pushers_by_app_id_and_pushkey(
        self, app_id: str, pushkey: str
    ) -> Iterator[PusherConfig]:
        return await self.get_pushers_by({"app_id": app_id, "pushkey": pushkey})

    async def get_pushers_by_user_id(self, user_id: str) -> Iterator[PusherConfig]:
        return await self.get_pushers_by({"user_name": user_id})

    async def get_pushers_by(self, keyvalues: Dict[str, Any]) -> Iterator[PusherConfig]:
        """Retrieve pushers that match the given criteria.

        Args:
            keyvalues: A {column: value} dictionary.

        Returns:
            The pushers for which the given columns have the given values.
        """

        def get_pushers_by_txn(txn: LoggingTransaction) -> List[Dict[str, Any]]:
            # We could technically use simple_select_list here, but we need to call
            # COALESCE on the 'enabled' column. While it is technically possible to give
            # simple_select_list the whole `COALESCE(...) AS ...` as a column name, it
            # feels a bit hacky, so it's probably better to just inline the query.
            sql = """
            SELECT
                id, user_name, access_token, profile_tag, kind, app_id,
                app_display_name, device_display_name, pushkey, ts, lang, data,
                last_stream_ordering, last_success, failing_since,
                COALESCE(enabled, TRUE) AS enabled, device_id
            FROM pushers
            """

            sql += "WHERE %s" % (" AND ".join("%s = ?" % (k,) for k in keyvalues),)

            txn.execute(sql, list(keyvalues.values()))

            return self.db_pool.cursor_to_dict(txn)

        ret = await self.db_pool.runInteraction(
            desc="get_pushers_by",
            func=get_pushers_by_txn,
        )

        return self._decode_pushers_rows(ret)

    async def get_enabled_pushers(self) -> Iterator[PusherConfig]:
        def get_enabled_pushers_txn(txn: LoggingTransaction) -> Iterator[PusherConfig]:
            txn.execute("SELECT * FROM pushers WHERE COALESCE(enabled, TRUE)")
            rows = self.db_pool.cursor_to_dict(txn)

            return self._decode_pushers_rows(rows)

        return await self.db_pool.runInteraction(
            "get_enabled_pushers", get_enabled_pushers_txn
        )

    async def get_all_updated_pushers_rows(
        self, instance_name: str, last_id: int, current_id: int, limit: int
    ) -> Tuple[List[Tuple[int, tuple]], int, bool]:
        """Get updates for pushers replication stream.

        Args:
            instance_name: The writer we want to fetch updates from. Unused
                here since there is only ever one writer.
            last_id: The token to fetch updates from. Exclusive.
            current_id: The token to fetch updates up to. Inclusive.
            limit: The requested limit for the number of rows to return. The
                function may return more or fewer rows.

        Returns:
            A tuple consisting of: the updates, a token to use to fetch
            subsequent updates, and whether we returned fewer rows than exists
            between the requested tokens due to the limit.

            The token returned can be used in a subsequent call to this
            function to get further updatees.

            The updates are a list of 2-tuples of stream ID and the row data
        """

        if last_id == current_id:
            return [], current_id, False

        def get_all_updated_pushers_rows_txn(
            txn: LoggingTransaction,
        ) -> Tuple[List[Tuple[int, tuple]], int, bool]:
            sql = """
                SELECT id, user_name, app_id, pushkey
                FROM pushers
                WHERE ? < id AND id <= ?
                ORDER BY id ASC LIMIT ?
            """
            txn.execute(sql, (last_id, current_id, limit))
            updates = cast(
                List[Tuple[int, tuple]],
                [
                    (stream_id, (user_name, app_id, pushkey, False))
                    for stream_id, user_name, app_id, pushkey in txn
                ],
            )

            sql = """
                SELECT stream_id, user_id, app_id, pushkey
                FROM deleted_pushers
                WHERE ? < stream_id AND stream_id <= ?
                ORDER BY stream_id ASC LIMIT ?
            """
            txn.execute(sql, (last_id, current_id, limit))
            updates.extend(
                (stream_id, (user_name, app_id, pushkey, True))
                for stream_id, user_name, app_id, pushkey in txn
            )

            updates.sort()  # Sort so that they're ordered by stream id

            limited = False
            upper_bound = current_id
            if len(updates) >= limit:
                limited = True
                upper_bound = updates[-1][0]

            return updates, upper_bound, limited

        return await self.db_pool.runInteraction(
            "get_all_updated_pushers_rows", get_all_updated_pushers_rows_txn
        )

    @cached(num_args=1, max_entries=15000)
    async def get_if_user_has_pusher(self, user_id: str) -> None:
        # This only exists for the cachedList decorator
        raise NotImplementedError()

    async def update_pusher_last_stream_ordering(
        self, app_id: str, pushkey: str, user_id: str, last_stream_ordering: int
    ) -> None:
        await self.db_pool.simple_update_one(
            "pushers",
            {"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
            {"last_stream_ordering": last_stream_ordering},
            desc="update_pusher_last_stream_ordering",
        )

    async def update_pusher_last_stream_ordering_and_success(
        self,
        app_id: str,
        pushkey: str,
        user_id: str,
        last_stream_ordering: int,
        last_success: int,
    ) -> bool:
        """Update the last stream ordering position we've processed up to for
        the given pusher.

        Args:
            app_id
            pushkey
            user_id
            last_stream_ordering
            last_success

        Returns:
            True if the pusher still exists; False if it has been deleted.
        """
        updated = await self.db_pool.simple_update(
            table="pushers",
            keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
            updatevalues={
                "last_stream_ordering": last_stream_ordering,
                "last_success": last_success,
            },
            desc="update_pusher_last_stream_ordering_and_success",
        )

        return bool(updated)

    async def update_pusher_failing_since(
        self, app_id: str, pushkey: str, user_id: str, failing_since: Optional[int]
    ) -> None:
        await self.db_pool.simple_update(
            table="pushers",
            keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
            updatevalues={"failing_since": failing_since},
            desc="update_pusher_failing_since",
        )

    async def get_throttle_params_by_room(
        self, pusher_id: str
    ) -> Dict[str, ThrottleParams]:
        res = await self.db_pool.simple_select_list(
            "pusher_throttle",
            {"pusher": pusher_id},
            ["room_id", "last_sent_ts", "throttle_ms"],
            desc="get_throttle_params_by_room",
        )

        params_by_room = {}
        for row in res:
            params_by_room[row["room_id"]] = ThrottleParams(
                row["last_sent_ts"],
                row["throttle_ms"],
            )

        return params_by_room

    async def set_throttle_params(
        self, pusher_id: str, room_id: str, params: ThrottleParams
    ) -> None:
        await self.db_pool.simple_upsert(
            "pusher_throttle",
            {"pusher": pusher_id, "room_id": room_id},
            {"last_sent_ts": params.last_sent_ts, "throttle_ms": params.throttle_ms},
            desc="set_throttle_params",
        )

    async def _remove_deactivated_pushers(self, progress: dict, batch_size: int) -> int:
        """A background update that deletes all pushers for deactivated users.

        Note that we don't proacively tell the pusherpool that we've deleted
        these (just because its a bit off a faff to do from here), but they will
        get cleaned up at the next restart
        """

        last_user = progress.get("last_user", "")

        def _delete_pushers(txn: LoggingTransaction) -> int:

            sql = """
                SELECT name FROM users
                WHERE deactivated = ? and name > ?
                ORDER BY name ASC
                LIMIT ?
            """

            txn.execute(sql, (1, last_user, batch_size))
            users = [row[0] for row in txn]

            self.db_pool.simple_delete_many_txn(
                txn,
                table="pushers",
                column="user_name",
                values=users,
                keyvalues={},
            )

            if users:
                self.db_pool.updates._background_update_progress_txn(
                    txn, "remove_deactivated_pushers", {"last_user": users[-1]}
                )

            return len(users)

        number_deleted = await self.db_pool.runInteraction(
            "_remove_deactivated_pushers", _delete_pushers
        )

        if number_deleted < batch_size:
            await self.db_pool.updates._end_background_update(
                "remove_deactivated_pushers"
            )

        return number_deleted

    async def _remove_stale_pushers(self, progress: dict, batch_size: int) -> int:
        """A background update that deletes all pushers for logged out devices.

        Note that we don't proacively tell the pusherpool that we've deleted
        these (just because its a bit off a faff to do from here), but they will
        get cleaned up at the next restart
        """

        last_pusher = progress.get("last_pusher", 0)

        def _delete_pushers(txn: LoggingTransaction) -> int:

            sql = """
                SELECT p.id, access_token FROM pushers AS p
                LEFT JOIN access_tokens AS a ON (p.access_token = a.id)
                WHERE p.id > ?
                ORDER BY p.id ASC
                LIMIT ?
            """

            txn.execute(sql, (last_pusher, batch_size))
            pushers = [(row[0], row[1]) for row in txn]

            self.db_pool.simple_delete_many_txn(
                txn,
                table="pushers",
                column="id",
                values=[pusher_id for pusher_id, token in pushers if token is None],
                keyvalues={},
            )

            if pushers:
                self.db_pool.updates._background_update_progress_txn(
                    txn, "remove_stale_pushers", {"last_pusher": pushers[-1][0]}
                )

            return len(pushers)

        number_deleted = await self.db_pool.runInteraction(
            "_remove_stale_pushers", _delete_pushers
        )

        if number_deleted < batch_size:
            await self.db_pool.updates._end_background_update("remove_stale_pushers")

        return number_deleted

    async def _remove_deleted_email_pushers(
        self, progress: dict, batch_size: int
    ) -> int:
        """A background update that deletes all pushers for deleted email addresses.

        In previous versions of synapse, when users deleted their email address, it didn't
        also delete all the pushers for that email address. This background update removes
        those to prevent unwanted emails. This should only need to be run once (when users
        upgrade to v1.42.0

        Args:
            progress: dict used to store progress of this background update
            batch_size: the maximum number of rows to retrieve in a single select query

        Returns:
            The number of deleted rows
        """

        last_pusher = progress.get("last_pusher", 0)

        def _delete_pushers(txn: LoggingTransaction) -> int:

            sql = """
                SELECT p.id, p.user_name, p.app_id, p.pushkey
                FROM pushers AS p
                    LEFT JOIN user_threepids AS t
                        ON t.user_id = p.user_name
                        AND t.medium = 'email'
                        AND t.address = p.pushkey
                WHERE t.user_id is NULL
                    AND p.app_id = 'm.email'
                    AND p.id > ?
                ORDER BY p.id ASC
                LIMIT ?
            """

            txn.execute(sql, (last_pusher, batch_size))
            rows = txn.fetchall()

            last = None
            num_deleted = 0
            for row in rows:
                last = row[0]
                num_deleted += 1
                self.db_pool.simple_delete_txn(
                    txn,
                    "pushers",
                    {"user_name": row[1], "app_id": row[2], "pushkey": row[3]},
                )

            if last is not None:
                self.db_pool.updates._background_update_progress_txn(
                    txn, "remove_deleted_email_pushers", {"last_pusher": last}
                )

            return num_deleted

        number_deleted = await self.db_pool.runInteraction(
            "_remove_deleted_email_pushers", _delete_pushers
        )

        if number_deleted < batch_size:
            await self.db_pool.updates._end_background_update(
                "remove_deleted_email_pushers"
            )

        return number_deleted


class PusherBackgroundUpdatesStore(SQLBaseStore):
    def __init__(
        self,
        database: DatabasePool,
        db_conn: LoggingDatabaseConnection,
        hs: "HomeServer",
    ):
        super().__init__(database, db_conn, hs)

        self.db_pool.updates.register_background_update_handler(
            "set_device_id_for_pushers", self._set_device_id_for_pushers
        )

    async def _set_device_id_for_pushers(
        self, progress: JsonDict, batch_size: int
    ) -> int:
        """Background update to populate the device_id column of the pushers table."""
        last_pusher_id = progress.get("pusher_id", 0)

        def set_device_id_for_pushers_txn(txn: LoggingTransaction) -> int:
            txn.execute(
                """
                    SELECT p.id, at.device_id
                    FROM pushers AS p
                    INNER JOIN access_tokens AS at
                        ON p.access_token = at.id
                    WHERE
                        p.access_token IS NOT NULL
                        AND at.device_id IS NOT NULL
                        AND p.id > ?
                    ORDER BY p.id
                    LIMIT ?
                """,
                (last_pusher_id, batch_size),
            )

            rows = self.db_pool.cursor_to_dict(txn)
            if len(rows) == 0:
                return 0

            self.db_pool.simple_update_many_txn(
                txn=txn,
                table="pushers",
                key_names=("id",),
                key_values=[(row["id"],) for row in rows],
                value_names=("device_id",),
                value_values=[(row["device_id"],) for row in rows],
            )

            self.db_pool.updates._background_update_progress_txn(
                txn, "set_device_id_for_pushers", {"pusher_id": rows[-1]["id"]}
            )

            return len(rows)

        nb_processed = await self.db_pool.runInteraction(
            "set_device_id_for_pushers", set_device_id_for_pushers_txn
        )

        if nb_processed < batch_size:
            await self.db_pool.updates._end_background_update(
                "set_device_id_for_pushers"
            )

        return nb_processed


class PusherStore(PusherWorkerStore, PusherBackgroundUpdatesStore):
    # Because we have write access, this will be a StreamIdGenerator
    # (see PusherWorkerStore.__init__)
    _pushers_id_gen: AbstractStreamIdGenerator

    async def add_pusher(
        self,
        user_id: str,
        access_token: Optional[int],
        kind: str,
        app_id: str,
        app_display_name: str,
        device_display_name: str,
        pushkey: str,
        pushkey_ts: int,
        lang: Optional[str],
        data: Optional[JsonDict],
        last_stream_ordering: int,
        profile_tag: str = "",
        enabled: bool = True,
        device_id: Optional[str] = None,
    ) -> None:
        async with self._pushers_id_gen.get_next() as stream_id:
            await self.db_pool.simple_upsert(
                table="pushers",
                keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
                values={
                    "access_token": access_token,
                    "kind": kind,
                    "app_display_name": app_display_name,
                    "device_display_name": device_display_name,
                    "ts": pushkey_ts,
                    "lang": lang,
                    "data": json_encoder.encode(data),
                    "last_stream_ordering": last_stream_ordering,
                    "profile_tag": profile_tag,
                    "id": stream_id,
                    "enabled": enabled,
                    "device_id": device_id,
                },
                desc="add_pusher",
            )

            user_has_pusher = self.get_if_user_has_pusher.cache.get_immediate(
                (user_id,), None, update_metrics=False
            )

            if user_has_pusher is not True:
                # invalidate, since we the user might not have had a pusher before
                await self.db_pool.runInteraction(
                    "add_pusher",
                    self._invalidate_cache_and_stream,  # type: ignore[attr-defined]
                    self.get_if_user_has_pusher,
                    (user_id,),
                )

    async def delete_pusher_by_app_id_pushkey_user_id(
        self, app_id: str, pushkey: str, user_id: str
    ) -> None:
        def delete_pusher_txn(txn: LoggingTransaction, stream_id: int) -> None:
            self._invalidate_cache_and_stream(  # type: ignore[attr-defined]
                txn, self.get_if_user_has_pusher, (user_id,)
            )

            # It is expected that there is exactly one pusher to delete, but
            # if it isn't there (or there are multiple) delete them all.
            self.db_pool.simple_delete_txn(
                txn,
                "pushers",
                {"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
            )

            # it's possible for us to end up with duplicate rows for
            # (app_id, pushkey, user_id) at different stream_ids, but that
            # doesn't really matter.
            self.db_pool.simple_insert_txn(
                txn,
                table="deleted_pushers",
                values={
                    "stream_id": stream_id,
                    "app_id": app_id,
                    "pushkey": pushkey,
                    "user_id": user_id,
                },
            )

        async with self._pushers_id_gen.get_next() as stream_id:
            await self.db_pool.runInteraction(
                "delete_pusher", delete_pusher_txn, stream_id
            )

    async def delete_all_pushers_for_user(self, user_id: str) -> None:
        """Delete all pushers associated with an account."""

        # We want to generate a row in `deleted_pushers` for each pusher we're
        # deleting, so we fetch the list now so we can generate the appropriate
        # number of stream IDs.
        #
        # Note: technically there could be a race here between adding/deleting
        # pushers, but a) the worst case if we don't stop a pusher until the
        # next restart and b) this is only called when we're deactivating an
        # account.
        pushers = list(await self.get_pushers_by_user_id(user_id))

        def delete_pushers_txn(txn: LoggingTransaction, stream_ids: List[int]) -> None:
            self._invalidate_cache_and_stream(  # type: ignore[attr-defined]
                txn, self.get_if_user_has_pusher, (user_id,)
            )

            self.db_pool.simple_delete_txn(
                txn,
                table="pushers",
                keyvalues={"user_name": user_id},
            )

            self.db_pool.simple_insert_many_txn(
                txn,
                table="deleted_pushers",
                keys=("stream_id", "app_id", "pushkey", "user_id"),
                values=[
                    (stream_id, pusher.app_id, pusher.pushkey, user_id)
                    for stream_id, pusher in zip(stream_ids, pushers)
                ],
            )

        async with self._pushers_id_gen.get_next_mult(len(pushers)) as stream_ids:
            await self.db_pool.runInteraction(
                "delete_all_pushers_for_user", delete_pushers_txn, stream_ids
            )