523 lines
18 KiB
Python
523 lines
18 KiB
Python
# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2018 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from typing import TYPE_CHECKING, Any, Dict, Iterable, Iterator, List, Optional, Tuple
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from synapse.push import PusherConfig, ThrottleParams
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from synapse.storage._base import SQLBaseStore, db_to_json
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from synapse.storage.database import DatabasePool
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from synapse.storage.types import Connection
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from synapse.storage.util.id_generators import StreamIdGenerator
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from synapse.types import JsonDict
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from synapse.util import json_encoder
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from synapse.util.caches.descriptors import cached, cachedList
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class PusherWorkerStore(SQLBaseStore):
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def __init__(self, database: DatabasePool, db_conn: Connection, hs: "HomeServer"):
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super().__init__(database, db_conn, hs)
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self._pushers_id_gen = StreamIdGenerator(
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db_conn, "pushers", "id", extra_tables=[("deleted_pushers", "stream_id")]
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)
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self.db_pool.updates.register_background_update_handler(
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"remove_deactivated_pushers",
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self._remove_deactivated_pushers,
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)
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self.db_pool.updates.register_background_update_handler(
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"remove_stale_pushers",
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self._remove_stale_pushers,
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)
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def _decode_pushers_rows(self, rows: Iterable[dict]) -> Iterator[PusherConfig]:
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"""JSON-decode the data in the rows returned from the `pushers` table
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Drops any rows whose data cannot be decoded
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"""
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for r in rows:
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data_json = r["data"]
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try:
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r["data"] = db_to_json(data_json)
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except Exception as e:
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logger.warning(
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"Invalid JSON in data for pusher %d: %s, %s",
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r["id"],
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data_json,
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e.args[0],
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)
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continue
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yield PusherConfig(**r)
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async def user_has_pusher(self, user_id: str) -> bool:
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ret = await self.db_pool.simple_select_one_onecol(
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"pushers", {"user_name": user_id}, "id", allow_none=True
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)
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return ret is not None
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async def get_pushers_by_app_id_and_pushkey(
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self, app_id: str, pushkey: str
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) -> Iterator[PusherConfig]:
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return await self.get_pushers_by({"app_id": app_id, "pushkey": pushkey})
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async def get_pushers_by_user_id(self, user_id: str) -> Iterator[PusherConfig]:
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return await self.get_pushers_by({"user_name": user_id})
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async def get_pushers_by(self, keyvalues: Dict[str, Any]) -> Iterator[PusherConfig]:
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ret = await self.db_pool.simple_select_list(
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"pushers",
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keyvalues,
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[
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"id",
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"user_name",
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"access_token",
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"profile_tag",
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"kind",
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"app_id",
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"app_display_name",
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"device_display_name",
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"pushkey",
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"ts",
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"lang",
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"data",
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"last_stream_ordering",
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"last_success",
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"failing_since",
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],
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desc="get_pushers_by",
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)
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return self._decode_pushers_rows(ret)
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async def get_all_pushers(self) -> Iterator[PusherConfig]:
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def get_pushers(txn):
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txn.execute("SELECT * FROM pushers")
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rows = self.db_pool.cursor_to_dict(txn)
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return self._decode_pushers_rows(rows)
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return await self.db_pool.runInteraction("get_all_pushers", get_pushers)
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async def get_all_updated_pushers_rows(
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self, instance_name: str, last_id: int, current_id: int, limit: int
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) -> Tuple[List[Tuple[int, tuple]], int, bool]:
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"""Get updates for pushers replication stream.
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Args:
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instance_name: The writer we want to fetch updates from. Unused
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here since there is only ever one writer.
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last_id: The token to fetch updates from. Exclusive.
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current_id: The token to fetch updates up to. Inclusive.
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limit: The requested limit for the number of rows to return. The
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function may return more or fewer rows.
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Returns:
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A tuple consisting of: the updates, a token to use to fetch
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subsequent updates, and whether we returned fewer rows than exists
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between the requested tokens due to the limit.
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The token returned can be used in a subsequent call to this
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function to get further updatees.
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The updates are a list of 2-tuples of stream ID and the row data
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"""
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if last_id == current_id:
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return [], current_id, False
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def get_all_updated_pushers_rows_txn(txn):
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sql = """
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SELECT id, user_name, app_id, pushkey
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FROM pushers
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WHERE ? < id AND id <= ?
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ORDER BY id ASC LIMIT ?
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"""
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txn.execute(sql, (last_id, current_id, limit))
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updates = [
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(stream_id, (user_name, app_id, pushkey, False))
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for stream_id, user_name, app_id, pushkey in txn
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]
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sql = """
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SELECT stream_id, user_id, app_id, pushkey
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FROM deleted_pushers
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WHERE ? < stream_id AND stream_id <= ?
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ORDER BY stream_id ASC LIMIT ?
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"""
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txn.execute(sql, (last_id, current_id, limit))
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updates.extend(
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(stream_id, (user_name, app_id, pushkey, True))
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for stream_id, user_name, app_id, pushkey in txn
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)
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updates.sort() # Sort so that they're ordered by stream id
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limited = False
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upper_bound = current_id
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if len(updates) >= limit:
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limited = True
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upper_bound = updates[-1][0]
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return updates, upper_bound, limited
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return await self.db_pool.runInteraction(
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"get_all_updated_pushers_rows", get_all_updated_pushers_rows_txn
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)
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@cached(num_args=1, max_entries=15000)
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async def get_if_user_has_pusher(self, user_id: str):
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# This only exists for the cachedList decorator
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raise NotImplementedError()
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@cachedList(
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cached_method_name="get_if_user_has_pusher",
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list_name="user_ids",
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num_args=1,
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)
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async def get_if_users_have_pushers(
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self, user_ids: Iterable[str]
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) -> Dict[str, bool]:
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rows = await self.db_pool.simple_select_many_batch(
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table="pushers",
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column="user_name",
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iterable=user_ids,
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retcols=["user_name"],
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desc="get_if_users_have_pushers",
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)
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result = {user_id: False for user_id in user_ids}
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result.update({r["user_name"]: True for r in rows})
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return result
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async def update_pusher_last_stream_ordering(
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self, app_id, pushkey, user_id, last_stream_ordering
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) -> None:
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await self.db_pool.simple_update_one(
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"pushers",
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{"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
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{"last_stream_ordering": last_stream_ordering},
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desc="update_pusher_last_stream_ordering",
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)
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async def update_pusher_last_stream_ordering_and_success(
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self,
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app_id: str,
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pushkey: str,
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user_id: str,
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last_stream_ordering: int,
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last_success: int,
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) -> bool:
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"""Update the last stream ordering position we've processed up to for
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the given pusher.
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Args:
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app_id
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pushkey
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user_id
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last_stream_ordering
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last_success
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Returns:
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True if the pusher still exists; False if it has been deleted.
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"""
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updated = await self.db_pool.simple_update(
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table="pushers",
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keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
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updatevalues={
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"last_stream_ordering": last_stream_ordering,
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"last_success": last_success,
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},
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desc="update_pusher_last_stream_ordering_and_success",
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)
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return bool(updated)
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async def update_pusher_failing_since(
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self, app_id: str, pushkey: str, user_id: str, failing_since: Optional[int]
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) -> None:
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await self.db_pool.simple_update(
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table="pushers",
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keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
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updatevalues={"failing_since": failing_since},
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desc="update_pusher_failing_since",
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)
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async def get_throttle_params_by_room(
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self, pusher_id: str
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) -> Dict[str, ThrottleParams]:
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res = await self.db_pool.simple_select_list(
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"pusher_throttle",
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{"pusher": pusher_id},
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["room_id", "last_sent_ts", "throttle_ms"],
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desc="get_throttle_params_by_room",
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)
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params_by_room = {}
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for row in res:
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params_by_room[row["room_id"]] = ThrottleParams(
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row["last_sent_ts"],
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row["throttle_ms"],
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)
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return params_by_room
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async def set_throttle_params(
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self, pusher_id: str, room_id: str, params: ThrottleParams
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) -> None:
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# no need to lock because `pusher_throttle` has a primary key on
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# (pusher, room_id) so simple_upsert will retry
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await self.db_pool.simple_upsert(
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"pusher_throttle",
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{"pusher": pusher_id, "room_id": room_id},
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{"last_sent_ts": params.last_sent_ts, "throttle_ms": params.throttle_ms},
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desc="set_throttle_params",
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lock=False,
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)
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async def _remove_deactivated_pushers(self, progress: dict, batch_size: int) -> int:
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"""A background update that deletes all pushers for deactivated users.
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Note that we don't proacively tell the pusherpool that we've deleted
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these (just because its a bit off a faff to do from here), but they will
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get cleaned up at the next restart
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"""
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last_user = progress.get("last_user", "")
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def _delete_pushers(txn) -> int:
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sql = """
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SELECT name FROM users
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WHERE deactivated = ? and name > ?
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ORDER BY name ASC
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LIMIT ?
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"""
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txn.execute(sql, (1, last_user, batch_size))
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users = [row[0] for row in txn]
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self.db_pool.simple_delete_many_txn(
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txn,
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table="pushers",
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column="user_name",
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iterable=users,
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keyvalues={},
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)
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if users:
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self.db_pool.updates._background_update_progress_txn(
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txn, "remove_deactivated_pushers", {"last_user": users[-1]}
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)
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return len(users)
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number_deleted = await self.db_pool.runInteraction(
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"_remove_deactivated_pushers", _delete_pushers
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)
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if number_deleted < batch_size:
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await self.db_pool.updates._end_background_update(
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"remove_deactivated_pushers"
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)
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return number_deleted
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async def _remove_stale_pushers(self, progress: dict, batch_size: int) -> int:
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"""A background update that deletes all pushers for logged out devices.
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Note that we don't proacively tell the pusherpool that we've deleted
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these (just because its a bit off a faff to do from here), but they will
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get cleaned up at the next restart
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"""
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last_pusher = progress.get("last_pusher", 0)
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def _delete_pushers(txn) -> int:
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sql = """
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SELECT p.id, access_token FROM pushers AS p
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LEFT JOIN access_tokens AS a ON (p.access_token = a.id)
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WHERE p.id > ?
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ORDER BY p.id ASC
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LIMIT ?
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"""
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txn.execute(sql, (last_pusher, batch_size))
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pushers = [(row[0], row[1]) for row in txn]
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self.db_pool.simple_delete_many_txn(
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txn,
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table="pushers",
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column="id",
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iterable=(pusher_id for pusher_id, token in pushers if token is None),
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keyvalues={},
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)
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if pushers:
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self.db_pool.updates._background_update_progress_txn(
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txn, "remove_stale_pushers", {"last_pusher": pushers[-1][0]}
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)
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return len(pushers)
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number_deleted = await self.db_pool.runInteraction(
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"_remove_stale_pushers", _delete_pushers
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)
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if number_deleted < batch_size:
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await self.db_pool.updates._end_background_update("remove_stale_pushers")
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return number_deleted
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class PusherStore(PusherWorkerStore):
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def get_pushers_stream_token(self) -> int:
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return self._pushers_id_gen.get_current_token()
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async def add_pusher(
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self,
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user_id: str,
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access_token: Optional[int],
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kind: str,
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app_id: str,
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app_display_name: str,
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device_display_name: str,
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pushkey: str,
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pushkey_ts: int,
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lang: Optional[str],
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data: Optional[JsonDict],
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last_stream_ordering: int,
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profile_tag: str = "",
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) -> None:
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async with self._pushers_id_gen.get_next() as stream_id:
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# no need to lock because `pushers` has a unique key on
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# (app_id, pushkey, user_name) so simple_upsert will retry
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await self.db_pool.simple_upsert(
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table="pushers",
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keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
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values={
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"access_token": access_token,
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"kind": kind,
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"app_display_name": app_display_name,
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"device_display_name": device_display_name,
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"ts": pushkey_ts,
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"lang": lang,
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"data": json_encoder.encode(data),
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"last_stream_ordering": last_stream_ordering,
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"profile_tag": profile_tag,
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"id": stream_id,
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},
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desc="add_pusher",
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lock=False,
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)
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user_has_pusher = self.get_if_user_has_pusher.cache.get_immediate(
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(user_id,), None, update_metrics=False
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)
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if user_has_pusher is not True:
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# invalidate, since we the user might not have had a pusher before
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await self.db_pool.runInteraction(
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"add_pusher",
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self._invalidate_cache_and_stream, # type: ignore
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self.get_if_user_has_pusher,
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(user_id,),
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)
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async def delete_pusher_by_app_id_pushkey_user_id(
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self, app_id: str, pushkey: str, user_id: str
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) -> None:
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def delete_pusher_txn(txn, stream_id):
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self._invalidate_cache_and_stream( # type: ignore
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txn, self.get_if_user_has_pusher, (user_id,)
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)
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# It is expected that there is exactly one pusher to delete, but
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# if it isn't there (or there are multiple) delete them all.
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self.db_pool.simple_delete_txn(
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txn,
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"pushers",
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{"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
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)
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# it's possible for us to end up with duplicate rows for
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# (app_id, pushkey, user_id) at different stream_ids, but that
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# doesn't really matter.
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self.db_pool.simple_insert_txn(
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txn,
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table="deleted_pushers",
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values={
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"stream_id": stream_id,
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"app_id": app_id,
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"pushkey": pushkey,
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"user_id": user_id,
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},
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)
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async with self._pushers_id_gen.get_next() as stream_id:
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await self.db_pool.runInteraction(
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"delete_pusher", delete_pusher_txn, stream_id
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)
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async def delete_all_pushers_for_user(self, user_id: str) -> None:
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"""Delete all pushers associated with an account."""
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# We want to generate a row in `deleted_pushers` for each pusher we're
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# deleting, so we fetch the list now so we can generate the appropriate
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# number of stream IDs.
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#
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# Note: technically there could be a race here between adding/deleting
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# pushers, but a) the worst case if we don't stop a pusher until the
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# next restart and b) this is only called when we're deactivating an
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# account.
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pushers = list(await self.get_pushers_by_user_id(user_id))
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def delete_pushers_txn(txn, stream_ids):
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self._invalidate_cache_and_stream( # type: ignore
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txn, self.get_if_user_has_pusher, (user_id,)
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)
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self.db_pool.simple_delete_txn(
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txn,
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table="pushers",
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keyvalues={"user_name": user_id},
|
|
)
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="deleted_pushers",
|
|
values=[
|
|
{
|
|
"stream_id": stream_id,
|
|
"app_id": pusher.app_id,
|
|
"pushkey": pusher.pushkey,
|
|
"user_id": 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
|
|
)
|