690 lines
24 KiB
Python
690 lines
24 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 Any, Dict, List, Optional, Tuple
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from twisted.internet import defer
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from synapse.replication.slave.storage._slaved_id_tracker import SlavedIdTracker
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from synapse.replication.tcp.streams import ReceiptsStream
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from synapse.storage._base import SQLBaseStore, db_to_json, make_in_list_sql_clause
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from synapse.storage.database import DatabasePool
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from synapse.storage.engines import PostgresEngine
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from synapse.storage.util.id_generators import MultiWriterIdGenerator, 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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from synapse.util.caches.stream_change_cache import StreamChangeCache
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logger = logging.getLogger(__name__)
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class ReceiptsWorkerStore(SQLBaseStore):
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def __init__(self, database: DatabasePool, db_conn, hs):
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self._instance_name = hs.get_instance_name()
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if isinstance(database.engine, PostgresEngine):
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self._can_write_to_receipts = (
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self._instance_name in hs.config.worker.writers.receipts
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)
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self._receipts_id_gen = MultiWriterIdGenerator(
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db_conn=db_conn,
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db=database,
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stream_name="receipts",
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instance_name=self._instance_name,
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tables=[("receipts_linearized", "instance_name", "stream_id")],
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sequence_name="receipts_sequence",
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writers=hs.config.worker.writers.receipts,
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)
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else:
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self._can_write_to_receipts = True
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# We shouldn't be running in worker mode with SQLite, but its useful
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# to support it for unit tests.
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#
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# If this process is the writer than we need to use
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# `StreamIdGenerator`, otherwise we use `SlavedIdTracker` which gets
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# updated over replication. (Multiple writers are not supported for
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# SQLite).
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if hs.get_instance_name() in hs.config.worker.writers.receipts:
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self._receipts_id_gen = StreamIdGenerator(
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db_conn, "receipts_linearized", "stream_id"
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)
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else:
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self._receipts_id_gen = SlavedIdTracker(
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db_conn, "receipts_linearized", "stream_id"
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)
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super().__init__(database, db_conn, hs)
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self._receipts_stream_cache = StreamChangeCache(
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"ReceiptsRoomChangeCache", self.get_max_receipt_stream_id()
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)
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def get_max_receipt_stream_id(self):
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"""Get the current max stream ID for receipts stream
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Returns:
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int
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"""
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return self._receipts_id_gen.get_current_token()
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@cached()
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async def get_users_with_read_receipts_in_room(self, room_id):
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receipts = await self.get_receipts_for_room(room_id, "m.read")
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return {r["user_id"] for r in receipts}
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@cached(num_args=2)
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async def get_receipts_for_room(
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self, room_id: str, receipt_type: str
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) -> List[Dict[str, Any]]:
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return await self.db_pool.simple_select_list(
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table="receipts_linearized",
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keyvalues={"room_id": room_id, "receipt_type": receipt_type},
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retcols=("user_id", "event_id"),
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desc="get_receipts_for_room",
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)
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@cached(num_args=3)
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async def get_last_receipt_event_id_for_user(
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self, user_id: str, room_id: str, receipt_type: str
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) -> Optional[str]:
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return await self.db_pool.simple_select_one_onecol(
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table="receipts_linearized",
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keyvalues={
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"room_id": room_id,
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"receipt_type": receipt_type,
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"user_id": user_id,
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},
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retcol="event_id",
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desc="get_own_receipt_for_user",
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allow_none=True,
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)
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@cached(num_args=2)
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async def get_receipts_for_user(self, user_id, receipt_type):
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rows = await self.db_pool.simple_select_list(
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table="receipts_linearized",
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keyvalues={"user_id": user_id, "receipt_type": receipt_type},
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retcols=("room_id", "event_id"),
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desc="get_receipts_for_user",
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)
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return {row["room_id"]: row["event_id"] for row in rows}
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async def get_receipts_for_user_with_orderings(self, user_id, receipt_type):
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def f(txn):
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sql = (
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"SELECT rl.room_id, rl.event_id,"
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" e.topological_ordering, e.stream_ordering"
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" FROM receipts_linearized AS rl"
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" INNER JOIN events AS e USING (room_id, event_id)"
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" WHERE rl.room_id = e.room_id"
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" AND rl.event_id = e.event_id"
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" AND user_id = ?"
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)
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txn.execute(sql, (user_id,))
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return txn.fetchall()
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rows = await self.db_pool.runInteraction(
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"get_receipts_for_user_with_orderings", f
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)
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return {
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row[0]: {
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"event_id": row[1],
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"topological_ordering": row[2],
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"stream_ordering": row[3],
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}
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for row in rows
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}
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async def get_linearized_receipts_for_rooms(
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self, room_ids: List[str], to_key: int, from_key: Optional[int] = None
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) -> List[dict]:
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"""Get receipts for multiple rooms for sending to clients.
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Args:
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room_id: List of room_ids.
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to_key: Max stream id to fetch receipts up to.
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from_key: Min stream id to fetch receipts from. None fetches
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from the start.
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Returns:
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A list of receipts.
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"""
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room_ids = set(room_ids)
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if from_key is not None:
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# Only ask the database about rooms where there have been new
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# receipts added since `from_key`
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room_ids = self._receipts_stream_cache.get_entities_changed(
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room_ids, from_key
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)
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results = await self._get_linearized_receipts_for_rooms(
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room_ids, to_key, from_key=from_key
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)
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return [ev for res in results.values() for ev in res]
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async def get_linearized_receipts_for_room(
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self, room_id: str, to_key: int, from_key: Optional[int] = None
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) -> List[dict]:
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"""Get receipts for a single room for sending to clients.
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Args:
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room_ids: The room id.
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to_key: Max stream id to fetch receipts up to.
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from_key: Min stream id to fetch receipts from. None fetches
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from the start.
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Returns:
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A list of receipts.
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"""
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if from_key is not None:
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# Check the cache first to see if any new receipts have been added
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# since`from_key`. If not we can no-op.
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if not self._receipts_stream_cache.has_entity_changed(room_id, from_key):
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return []
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return await self._get_linearized_receipts_for_room(room_id, to_key, from_key)
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@cached(num_args=3, tree=True)
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async def _get_linearized_receipts_for_room(
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self, room_id: str, to_key: int, from_key: Optional[int] = None
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) -> List[dict]:
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"""See get_linearized_receipts_for_room"""
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def f(txn):
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if from_key:
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sql = (
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"SELECT * FROM receipts_linearized WHERE"
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" room_id = ? AND stream_id > ? AND stream_id <= ?"
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)
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txn.execute(sql, (room_id, from_key, to_key))
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else:
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sql = (
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"SELECT * FROM receipts_linearized WHERE"
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" room_id = ? AND stream_id <= ?"
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)
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txn.execute(sql, (room_id, to_key))
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rows = self.db_pool.cursor_to_dict(txn)
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return rows
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rows = await self.db_pool.runInteraction("get_linearized_receipts_for_room", f)
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if not rows:
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return []
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content = {}
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for row in rows:
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content.setdefault(row["event_id"], {}).setdefault(row["receipt_type"], {})[
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row["user_id"]
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] = db_to_json(row["data"])
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return [{"type": "m.receipt", "room_id": room_id, "content": content}]
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@cachedList(
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cached_method_name="_get_linearized_receipts_for_room",
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list_name="room_ids",
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num_args=3,
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)
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async def _get_linearized_receipts_for_rooms(self, room_ids, to_key, from_key=None):
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if not room_ids:
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return {}
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def f(txn):
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if from_key:
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sql = """
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SELECT * FROM receipts_linearized WHERE
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stream_id > ? AND stream_id <= ? AND
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"""
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clause, args = make_in_list_sql_clause(
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self.database_engine, "room_id", room_ids
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)
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txn.execute(sql + clause, [from_key, to_key] + list(args))
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else:
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sql = """
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SELECT * FROM receipts_linearized WHERE
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stream_id <= ? AND
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"""
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clause, args = make_in_list_sql_clause(
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self.database_engine, "room_id", room_ids
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)
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txn.execute(sql + clause, [to_key] + list(args))
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return self.db_pool.cursor_to_dict(txn)
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txn_results = await self.db_pool.runInteraction(
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"_get_linearized_receipts_for_rooms", f
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)
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results = {}
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for row in txn_results:
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# We want a single event per room, since we want to batch the
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# receipts by room, event and type.
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room_event = results.setdefault(
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row["room_id"],
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{"type": "m.receipt", "room_id": row["room_id"], "content": {}},
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)
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# The content is of the form:
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# {"$foo:bar": { "read": { "@user:host": <receipt> }, .. }, .. }
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event_entry = room_event["content"].setdefault(row["event_id"], {})
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receipt_type = event_entry.setdefault(row["receipt_type"], {})
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receipt_type[row["user_id"]] = db_to_json(row["data"])
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results = {
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room_id: [results[room_id]] if room_id in results else []
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for room_id in room_ids
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}
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return results
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@cached(
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num_args=2,
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)
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async def get_linearized_receipts_for_all_rooms(
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self, to_key: int, from_key: Optional[int] = None
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) -> Dict[str, JsonDict]:
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"""Get receipts for all rooms between two stream_ids, up
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to a limit of the latest 100 read receipts.
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Args:
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to_key: Max stream id to fetch receipts up to.
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from_key: Min stream id to fetch receipts from. None fetches
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from the start.
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Returns:
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A dictionary of roomids to a list of receipts.
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"""
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def f(txn):
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if from_key:
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sql = """
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SELECT * FROM receipts_linearized WHERE
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stream_id > ? AND stream_id <= ?
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ORDER BY stream_id DESC
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LIMIT 100
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"""
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txn.execute(sql, [from_key, to_key])
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else:
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sql = """
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SELECT * FROM receipts_linearized WHERE
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stream_id <= ?
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ORDER BY stream_id DESC
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LIMIT 100
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"""
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txn.execute(sql, [to_key])
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return self.db_pool.cursor_to_dict(txn)
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txn_results = await self.db_pool.runInteraction(
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"get_linearized_receipts_for_all_rooms", f
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)
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results = {}
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for row in txn_results:
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# We want a single event per room, since we want to batch the
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# receipts by room, event and type.
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room_event = results.setdefault(
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row["room_id"],
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{"type": "m.receipt", "room_id": row["room_id"], "content": {}},
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)
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# The content is of the form:
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# {"$foo:bar": { "read": { "@user:host": <receipt> }, .. }, .. }
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event_entry = room_event["content"].setdefault(row["event_id"], {})
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receipt_type = event_entry.setdefault(row["receipt_type"], {})
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receipt_type[row["user_id"]] = db_to_json(row["data"])
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return results
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async def get_users_sent_receipts_between(
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self, last_id: int, current_id: int
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) -> List[str]:
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"""Get all users who sent receipts between `last_id` exclusive and
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`current_id` inclusive.
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Returns:
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The list of users.
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"""
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if last_id == current_id:
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return defer.succeed([])
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def _get_users_sent_receipts_between_txn(txn):
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sql = """
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SELECT DISTINCT user_id FROM receipts_linearized
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WHERE ? < stream_id AND stream_id <= ?
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"""
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txn.execute(sql, (last_id, current_id))
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return [r[0] for r in txn]
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return await self.db_pool.runInteraction(
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"get_users_sent_receipts_between", _get_users_sent_receipts_between_txn
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)
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async def get_all_updated_receipts(
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self, instance_name: str, last_id: int, current_id: int, limit: int
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) -> Tuple[List[Tuple[int, list]], int, bool]:
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"""Get updates for receipts 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_receipts_txn(txn):
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sql = """
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SELECT stream_id, room_id, receipt_type, user_id, event_id, data
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FROM receipts_linearized
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WHERE ? < stream_id AND stream_id <= ?
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ORDER BY stream_id ASC
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LIMIT ?
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"""
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txn.execute(sql, (last_id, current_id, limit))
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updates = [(r[0], r[1:5] + (db_to_json(r[5]),)) for r in txn]
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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_receipts", get_all_updated_receipts_txn
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)
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def _invalidate_get_users_with_receipts_in_room(
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self, room_id: str, receipt_type: str, user_id: str
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):
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if receipt_type != "m.read":
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return
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res = self.get_users_with_read_receipts_in_room.cache.get_immediate(
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room_id, None, update_metrics=False
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)
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if res and user_id in res:
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# We'd only be adding to the set, so no point invalidating if the
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# user is already there
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return
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self.get_users_with_read_receipts_in_room.invalidate((room_id,))
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def invalidate_caches_for_receipt(self, room_id, receipt_type, user_id):
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self.get_receipts_for_user.invalidate((user_id, receipt_type))
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self._get_linearized_receipts_for_room.invalidate_many((room_id,))
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self.get_last_receipt_event_id_for_user.invalidate(
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(user_id, room_id, receipt_type)
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)
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self._invalidate_get_users_with_receipts_in_room(room_id, receipt_type, user_id)
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self.get_receipts_for_room.invalidate((room_id, receipt_type))
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def process_replication_rows(self, stream_name, instance_name, token, rows):
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if stream_name == ReceiptsStream.NAME:
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self._receipts_id_gen.advance(instance_name, token)
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for row in rows:
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self.invalidate_caches_for_receipt(
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row.room_id, row.receipt_type, row.user_id
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)
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self._receipts_stream_cache.entity_has_changed(row.room_id, token)
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return super().process_replication_rows(stream_name, instance_name, token, rows)
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def insert_linearized_receipt_txn(
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self, txn, room_id, receipt_type, user_id, event_id, data, stream_id
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):
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"""Inserts a read-receipt into the database if it's newer than the current RR
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Returns: int|None
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None if the RR is older than the current RR
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otherwise, the rx timestamp of the event that the RR corresponds to
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(or 0 if the event is unknown)
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"""
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assert self._can_write_to_receipts
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res = self.db_pool.simple_select_one_txn(
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txn,
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table="events",
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retcols=["stream_ordering", "received_ts"],
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keyvalues={"event_id": event_id},
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allow_none=True,
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)
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stream_ordering = int(res["stream_ordering"]) if res else None
|
|
rx_ts = res["received_ts"] if res else 0
|
|
|
|
# We don't want to clobber receipts for more recent events, so we
|
|
# have to compare orderings of existing receipts
|
|
if stream_ordering is not None:
|
|
sql = (
|
|
"SELECT stream_ordering, event_id FROM events"
|
|
" INNER JOIN receipts_linearized as r USING (event_id, room_id)"
|
|
" WHERE r.room_id = ? AND r.receipt_type = ? AND r.user_id = ?"
|
|
)
|
|
txn.execute(sql, (room_id, receipt_type, user_id))
|
|
|
|
for so, eid in txn:
|
|
if int(so) >= stream_ordering:
|
|
logger.debug(
|
|
"Ignoring new receipt for %s in favour of existing "
|
|
"one for later event %s",
|
|
event_id,
|
|
eid,
|
|
)
|
|
return None
|
|
|
|
txn.call_after(
|
|
self.invalidate_caches_for_receipt, room_id, receipt_type, user_id
|
|
)
|
|
|
|
txn.call_after(
|
|
self._receipts_stream_cache.entity_has_changed, room_id, stream_id
|
|
)
|
|
|
|
self.db_pool.simple_upsert_txn(
|
|
txn,
|
|
table="receipts_linearized",
|
|
keyvalues={
|
|
"room_id": room_id,
|
|
"receipt_type": receipt_type,
|
|
"user_id": user_id,
|
|
},
|
|
values={
|
|
"stream_id": stream_id,
|
|
"event_id": event_id,
|
|
"data": json_encoder.encode(data),
|
|
},
|
|
# receipts_linearized has a unique constraint on
|
|
# (user_id, room_id, receipt_type), so no need to lock
|
|
lock=False,
|
|
)
|
|
|
|
if receipt_type == "m.read" and stream_ordering is not None:
|
|
self._remove_old_push_actions_before_txn(
|
|
txn, room_id=room_id, user_id=user_id, stream_ordering=stream_ordering
|
|
)
|
|
|
|
return rx_ts
|
|
|
|
async def insert_receipt(
|
|
self,
|
|
room_id: str,
|
|
receipt_type: str,
|
|
user_id: str,
|
|
event_ids: List[str],
|
|
data: dict,
|
|
) -> Optional[Tuple[int, int]]:
|
|
"""Insert a receipt, either from local client or remote server.
|
|
|
|
Automatically does conversion between linearized and graph
|
|
representations.
|
|
"""
|
|
assert self._can_write_to_receipts
|
|
|
|
if not event_ids:
|
|
return None
|
|
|
|
if len(event_ids) == 1:
|
|
linearized_event_id = event_ids[0]
|
|
else:
|
|
# we need to points in graph -> linearized form.
|
|
# TODO: Make this better.
|
|
def graph_to_linear(txn):
|
|
clause, args = make_in_list_sql_clause(
|
|
self.database_engine, "event_id", event_ids
|
|
)
|
|
|
|
sql = """
|
|
SELECT event_id WHERE room_id = ? AND stream_ordering IN (
|
|
SELECT max(stream_ordering) WHERE %s
|
|
)
|
|
""" % (
|
|
clause,
|
|
)
|
|
|
|
txn.execute(sql, [room_id] + list(args))
|
|
rows = txn.fetchall()
|
|
if rows:
|
|
return rows[0][0]
|
|
else:
|
|
raise RuntimeError("Unrecognized event_ids: %r" % (event_ids,))
|
|
|
|
linearized_event_id = await self.db_pool.runInteraction(
|
|
"insert_receipt_conv", graph_to_linear
|
|
)
|
|
|
|
async with self._receipts_id_gen.get_next() as stream_id:
|
|
event_ts = await self.db_pool.runInteraction(
|
|
"insert_linearized_receipt",
|
|
self.insert_linearized_receipt_txn,
|
|
room_id,
|
|
receipt_type,
|
|
user_id,
|
|
linearized_event_id,
|
|
data,
|
|
stream_id=stream_id,
|
|
)
|
|
|
|
if event_ts is None:
|
|
return None
|
|
|
|
now = self._clock.time_msec()
|
|
logger.debug(
|
|
"RR for event %s in %s (%i ms old)",
|
|
linearized_event_id,
|
|
room_id,
|
|
now - event_ts,
|
|
)
|
|
|
|
await self.insert_graph_receipt(room_id, receipt_type, user_id, event_ids, data)
|
|
|
|
max_persisted_id = self._receipts_id_gen.get_current_token()
|
|
|
|
return stream_id, max_persisted_id
|
|
|
|
async def insert_graph_receipt(
|
|
self, room_id, receipt_type, user_id, event_ids, data
|
|
):
|
|
assert self._can_write_to_receipts
|
|
|
|
return await self.db_pool.runInteraction(
|
|
"insert_graph_receipt",
|
|
self.insert_graph_receipt_txn,
|
|
room_id,
|
|
receipt_type,
|
|
user_id,
|
|
event_ids,
|
|
data,
|
|
)
|
|
|
|
def insert_graph_receipt_txn(
|
|
self, txn, room_id, receipt_type, user_id, event_ids, data
|
|
):
|
|
assert self._can_write_to_receipts
|
|
|
|
txn.call_after(self.get_receipts_for_room.invalidate, (room_id, receipt_type))
|
|
txn.call_after(
|
|
self._invalidate_get_users_with_receipts_in_room,
|
|
room_id,
|
|
receipt_type,
|
|
user_id,
|
|
)
|
|
txn.call_after(self.get_receipts_for_user.invalidate, (user_id, receipt_type))
|
|
# FIXME: This shouldn't invalidate the whole cache
|
|
txn.call_after(
|
|
self._get_linearized_receipts_for_room.invalidate_many, (room_id,)
|
|
)
|
|
|
|
self.db_pool.simple_delete_txn(
|
|
txn,
|
|
table="receipts_graph",
|
|
keyvalues={
|
|
"room_id": room_id,
|
|
"receipt_type": receipt_type,
|
|
"user_id": user_id,
|
|
},
|
|
)
|
|
self.db_pool.simple_insert_txn(
|
|
txn,
|
|
table="receipts_graph",
|
|
values={
|
|
"room_id": room_id,
|
|
"receipt_type": receipt_type,
|
|
"user_id": user_id,
|
|
"event_ids": json_encoder.encode(event_ids),
|
|
"data": json_encoder.encode(data),
|
|
},
|
|
)
|
|
|
|
|
|
class ReceiptsStore(ReceiptsWorkerStore):
|
|
pass
|