mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
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5009ffcaa4
When pulling events out of the DB to send over replication we were not filtering by instance name, and so we were sending events for other instances.
1492 lines
56 KiB
Python
1492 lines
56 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2018-2019 New Vector Ltd
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# Copyright 2019 The Matrix.org Foundation C.I.C.
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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 itertools
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import logging
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from collections import OrderedDict, namedtuple
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from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Optional, Set, Tuple
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import attr
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from prometheus_client import Counter
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import synapse.metrics
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from synapse.api.constants import EventContentFields, EventTypes, RelationTypes
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from synapse.api.room_versions import RoomVersions
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from synapse.crypto.event_signing import compute_event_reference_hash
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from synapse.events import EventBase # noqa: F401
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from synapse.events.snapshot import EventContext # noqa: F401
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from synapse.logging.utils import log_function
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from synapse.storage._base import db_to_json, make_in_list_sql_clause
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from synapse.storage.database import DatabasePool, LoggingTransaction
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from synapse.storage.databases.main.search import SearchEntry
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from synapse.storage.util.id_generators import MultiWriterIdGenerator
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from synapse.types import StateMap, get_domain_from_id
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from synapse.util.frozenutils import frozendict_json_encoder
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from synapse.util.iterutils import batch_iter
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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from synapse.storage.databases.main import DataStore
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logger = logging.getLogger(__name__)
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persist_event_counter = Counter("synapse_storage_events_persisted_events", "")
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event_counter = Counter(
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"synapse_storage_events_persisted_events_sep",
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"",
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["type", "origin_type", "origin_entity"],
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)
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_EventCacheEntry = namedtuple("_EventCacheEntry", ("event", "redacted_event"))
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@attr.s(slots=True)
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class DeltaState:
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"""Deltas to use to update the `current_state_events` table.
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Attributes:
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to_delete: List of type/state_keys to delete from current state
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to_insert: Map of state to upsert into current state
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no_longer_in_room: The server is not longer in the room, so the room
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should e.g. be removed from `current_state_events` table.
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"""
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to_delete = attr.ib(type=List[Tuple[str, str]])
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to_insert = attr.ib(type=StateMap[str])
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no_longer_in_room = attr.ib(type=bool, default=False)
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class PersistEventsStore:
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"""Contains all the functions for writing events to the database.
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Should only be instantiated on one process (when using a worker mode setup).
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Note: This is not part of the `DataStore` mixin.
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"""
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def __init__(
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self, hs: "HomeServer", db: DatabasePool, main_data_store: "DataStore"
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):
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self.hs = hs
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self.db_pool = db
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self.store = main_data_store
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self.database_engine = db.engine
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self._clock = hs.get_clock()
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self._instance_name = hs.get_instance_name()
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self._ephemeral_messages_enabled = hs.config.enable_ephemeral_messages
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self.is_mine_id = hs.is_mine_id
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# Ideally we'd move these ID gens here, unfortunately some other ID
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# generators are chained off them so doing so is a bit of a PITA.
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self._backfill_id_gen = (
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self.store._backfill_id_gen
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) # type: MultiWriterIdGenerator
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self._stream_id_gen = self.store._stream_id_gen # type: MultiWriterIdGenerator
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# This should only exist on instances that are configured to write
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assert (
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hs.get_instance_name() in hs.config.worker.writers.events
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), "Can only instantiate EventsStore on master"
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async def _persist_events_and_state_updates(
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self,
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events_and_contexts: List[Tuple[EventBase, EventContext]],
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current_state_for_room: Dict[str, StateMap[str]],
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state_delta_for_room: Dict[str, DeltaState],
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new_forward_extremeties: Dict[str, List[str]],
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backfilled: bool = False,
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) -> None:
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"""Persist a set of events alongside updates to the current state and
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forward extremities tables.
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Args:
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events_and_contexts:
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current_state_for_room: Map from room_id to the current state of
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the room based on forward extremities
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state_delta_for_room: Map from room_id to the delta to apply to
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room state
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new_forward_extremities: Map from room_id to list of event IDs
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that are the new forward extremities of the room.
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backfilled
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Returns:
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Resolves when the events have been persisted
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"""
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# We want to calculate the stream orderings as late as possible, as
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# we only notify after all events with a lesser stream ordering have
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# been persisted. I.e. if we spend 10s inside the with block then
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# that will delay all subsequent events from being notified about.
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# Hence why we do it down here rather than wrapping the entire
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# function.
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#
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# Its safe to do this after calculating the state deltas etc as we
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# only need to protect the *persistence* of the events. This is to
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# ensure that queries of the form "fetch events since X" don't
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# return events and stream positions after events that are still in
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# flight, as otherwise subsequent requests "fetch event since Y"
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# will not return those events.
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#
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# Note: Multiple instances of this function cannot be in flight at
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# the same time for the same room.
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if backfilled:
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stream_ordering_manager = self._backfill_id_gen.get_next_mult(
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len(events_and_contexts)
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)
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else:
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stream_ordering_manager = self._stream_id_gen.get_next_mult(
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len(events_and_contexts)
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)
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async with stream_ordering_manager as stream_orderings:
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for (event, context), stream in zip(events_and_contexts, stream_orderings):
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event.internal_metadata.stream_ordering = stream
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await self.db_pool.runInteraction(
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"persist_events",
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self._persist_events_txn,
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events_and_contexts=events_and_contexts,
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backfilled=backfilled,
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state_delta_for_room=state_delta_for_room,
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new_forward_extremeties=new_forward_extremeties,
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)
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persist_event_counter.inc(len(events_and_contexts))
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if not backfilled:
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# backfilled events have negative stream orderings, so we don't
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# want to set the event_persisted_position to that.
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synapse.metrics.event_persisted_position.set(
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events_and_contexts[-1][0].internal_metadata.stream_ordering
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)
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for event, context in events_and_contexts:
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if context.app_service:
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origin_type = "local"
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origin_entity = context.app_service.id
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elif self.hs.is_mine_id(event.sender):
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origin_type = "local"
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origin_entity = "*client*"
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else:
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origin_type = "remote"
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origin_entity = get_domain_from_id(event.sender)
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event_counter.labels(event.type, origin_type, origin_entity).inc()
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for room_id, new_state in current_state_for_room.items():
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self.store.get_current_state_ids.prefill((room_id,), new_state)
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for room_id, latest_event_ids in new_forward_extremeties.items():
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self.store.get_latest_event_ids_in_room.prefill(
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(room_id,), list(latest_event_ids)
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)
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async def _get_events_which_are_prevs(self, event_ids: Iterable[str]) -> List[str]:
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"""Filter the supplied list of event_ids to get those which are prev_events of
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existing (non-outlier/rejected) events.
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Args:
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event_ids: event ids to filter
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Returns:
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Filtered event ids
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"""
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results = [] # type: List[str]
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def _get_events_which_are_prevs_txn(txn, batch):
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sql = """
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SELECT prev_event_id, internal_metadata
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FROM event_edges
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INNER JOIN events USING (event_id)
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LEFT JOIN rejections USING (event_id)
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LEFT JOIN event_json USING (event_id)
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WHERE
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NOT events.outlier
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AND rejections.event_id IS NULL
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AND
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"""
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clause, args = make_in_list_sql_clause(
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self.database_engine, "prev_event_id", batch
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)
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txn.execute(sql + clause, args)
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results.extend(r[0] for r in txn if not db_to_json(r[1]).get("soft_failed"))
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for chunk in batch_iter(event_ids, 100):
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await self.db_pool.runInteraction(
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"_get_events_which_are_prevs", _get_events_which_are_prevs_txn, chunk
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)
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return results
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async def _get_prevs_before_rejected(self, event_ids: Iterable[str]) -> Set[str]:
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"""Get soft-failed ancestors to remove from the extremities.
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Given a set of events, find all those that have been soft-failed or
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rejected. Returns those soft failed/rejected events and their prev
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events (whether soft-failed/rejected or not), and recurses up the
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prev-event graph until it finds no more soft-failed/rejected events.
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This is used to find extremities that are ancestors of new events, but
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are separated by soft failed events.
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Args:
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event_ids: Events to find prev events for. Note that these must have
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already been persisted.
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Returns:
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The previous events.
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"""
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# The set of event_ids to return. This includes all soft-failed events
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# and their prev events.
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existing_prevs = set()
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def _get_prevs_before_rejected_txn(txn, batch):
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to_recursively_check = batch
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while to_recursively_check:
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sql = """
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SELECT
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event_id, prev_event_id, internal_metadata,
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rejections.event_id IS NOT NULL
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FROM event_edges
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INNER JOIN events USING (event_id)
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LEFT JOIN rejections USING (event_id)
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LEFT JOIN event_json USING (event_id)
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WHERE
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NOT events.outlier
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AND
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"""
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clause, args = make_in_list_sql_clause(
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self.database_engine, "event_id", to_recursively_check
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)
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txn.execute(sql + clause, args)
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to_recursively_check = []
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for event_id, prev_event_id, metadata, rejected in txn:
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if prev_event_id in existing_prevs:
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continue
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soft_failed = db_to_json(metadata).get("soft_failed")
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if soft_failed or rejected:
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to_recursively_check.append(prev_event_id)
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existing_prevs.add(prev_event_id)
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for chunk in batch_iter(event_ids, 100):
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await self.db_pool.runInteraction(
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"_get_prevs_before_rejected", _get_prevs_before_rejected_txn, chunk
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)
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return existing_prevs
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@log_function
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def _persist_events_txn(
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self,
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txn: LoggingTransaction,
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events_and_contexts: List[Tuple[EventBase, EventContext]],
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backfilled: bool,
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state_delta_for_room: Dict[str, DeltaState] = {},
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new_forward_extremeties: Dict[str, List[str]] = {},
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):
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"""Insert some number of room events into the necessary database tables.
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Rejected events are only inserted into the events table, the events_json table,
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and the rejections table. Things reading from those table will need to check
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whether the event was rejected.
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Args:
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txn
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events_and_contexts: events to persist
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backfilled: True if the events were backfilled
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delete_existing True to purge existing table rows for the events
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from the database. This is useful when retrying due to
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IntegrityError.
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state_delta_for_room: The current-state delta for each room.
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new_forward_extremetie: The new forward extremities for each room.
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For each room, a list of the event ids which are the forward
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extremities.
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"""
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all_events_and_contexts = events_and_contexts
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min_stream_order = events_and_contexts[0][0].internal_metadata.stream_ordering
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max_stream_order = events_and_contexts[-1][0].internal_metadata.stream_ordering
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# stream orderings should have been assigned by now
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assert min_stream_order
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assert max_stream_order
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self._update_forward_extremities_txn(
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txn,
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new_forward_extremities=new_forward_extremeties,
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max_stream_order=max_stream_order,
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)
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# Ensure that we don't have the same event twice.
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events_and_contexts = self._filter_events_and_contexts_for_duplicates(
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events_and_contexts
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)
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self._update_room_depths_txn(
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txn, events_and_contexts=events_and_contexts, backfilled=backfilled
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)
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# _update_outliers_txn filters out any events which have already been
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# persisted, and returns the filtered list.
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events_and_contexts = self._update_outliers_txn(
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txn, events_and_contexts=events_and_contexts
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)
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# From this point onwards the events are only events that we haven't
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# seen before.
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self._store_event_txn(txn, events_and_contexts=events_and_contexts)
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# Insert into event_to_state_groups.
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self._store_event_state_mappings_txn(txn, events_and_contexts)
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# We want to store event_auth mappings for rejected events, as they're
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# used in state res v2.
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# This is only necessary if the rejected event appears in an accepted
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# event's auth chain, but its easier for now just to store them (and
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# it doesn't take much storage compared to storing the entire event
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# anyway).
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self.db_pool.simple_insert_many_txn(
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txn,
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table="event_auth",
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values=[
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{
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"event_id": event.event_id,
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"room_id": event.room_id,
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"auth_id": auth_id,
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}
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for event, _ in events_and_contexts
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for auth_id in event.auth_event_ids()
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if event.is_state()
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],
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)
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# _store_rejected_events_txn filters out any events which were
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# rejected, and returns the filtered list.
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events_and_contexts = self._store_rejected_events_txn(
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txn, events_and_contexts=events_and_contexts
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)
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# From this point onwards the events are only ones that weren't
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# rejected.
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self._update_metadata_tables_txn(
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txn,
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events_and_contexts=events_and_contexts,
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all_events_and_contexts=all_events_and_contexts,
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backfilled=backfilled,
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)
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# We call this last as it assumes we've inserted the events into
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# room_memberships, where applicable.
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self._update_current_state_txn(txn, state_delta_for_room, min_stream_order)
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def _update_current_state_txn(
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self,
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txn: LoggingTransaction,
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state_delta_by_room: Dict[str, DeltaState],
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stream_id: int,
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):
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for room_id, delta_state in state_delta_by_room.items():
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to_delete = delta_state.to_delete
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to_insert = delta_state.to_insert
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if delta_state.no_longer_in_room:
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# Server is no longer in the room so we delete the room from
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# current_state_events, being careful we've already updated the
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# rooms.room_version column (which gets populated in a
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# background task).
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self._upsert_room_version_txn(txn, room_id)
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# Before deleting we populate the current_state_delta_stream
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# so that async background tasks get told what happened.
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sql = """
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INSERT INTO current_state_delta_stream
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(stream_id, instance_name, room_id, type, state_key, event_id, prev_event_id)
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SELECT ?, ?, room_id, type, state_key, null, event_id
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FROM current_state_events
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WHERE room_id = ?
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"""
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txn.execute(sql, (stream_id, self._instance_name, room_id))
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self.db_pool.simple_delete_txn(
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txn, table="current_state_events", keyvalues={"room_id": room_id},
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)
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else:
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# We're still in the room, so we update the current state as normal.
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# First we add entries to the current_state_delta_stream. We
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# do this before updating the current_state_events table so
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# that we can use it to calculate the `prev_event_id`. (This
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# allows us to not have to pull out the existing state
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# unnecessarily).
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#
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# The stream_id for the update is chosen to be the minimum of the stream_ids
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# for the batch of the events that we are persisting; that means we do not
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# end up in a situation where workers see events before the
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# current_state_delta updates.
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#
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sql = """
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INSERT INTO current_state_delta_stream
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(stream_id, instance_name, room_id, type, state_key, event_id, prev_event_id)
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SELECT ?, ?, ?, ?, ?, ?, (
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SELECT event_id FROM current_state_events
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WHERE room_id = ? AND type = ? AND state_key = ?
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)
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"""
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txn.executemany(
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sql,
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(
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(
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stream_id,
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self._instance_name,
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room_id,
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etype,
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state_key,
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to_insert.get((etype, state_key)),
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room_id,
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etype,
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state_key,
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)
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for etype, state_key in itertools.chain(to_delete, to_insert)
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),
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)
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# Now we actually update the current_state_events table
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txn.executemany(
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"DELETE FROM current_state_events"
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" WHERE room_id = ? AND type = ? AND state_key = ?",
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(
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(room_id, etype, state_key)
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for etype, state_key in itertools.chain(to_delete, to_insert)
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),
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)
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# We include the membership in the current state table, hence we do
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# a lookup when we insert. This assumes that all events have already
|
|
# been inserted into room_memberships.
|
|
txn.executemany(
|
|
"""INSERT INTO current_state_events
|
|
(room_id, type, state_key, event_id, membership)
|
|
VALUES (?, ?, ?, ?, (SELECT membership FROM room_memberships WHERE event_id = ?))
|
|
""",
|
|
[
|
|
(room_id, key[0], key[1], ev_id, ev_id)
|
|
for key, ev_id in to_insert.items()
|
|
],
|
|
)
|
|
|
|
# We now update `local_current_membership`. We do this regardless
|
|
# of whether we're still in the room or not to handle the case where
|
|
# e.g. we just got banned (where we need to record that fact here).
|
|
|
|
# Note: Do we really want to delete rows here (that we do not
|
|
# subsequently reinsert below)? While technically correct it means
|
|
# we have no record of the fact the user *was* a member of the
|
|
# room but got, say, state reset out of it.
|
|
if to_delete or to_insert:
|
|
txn.executemany(
|
|
"DELETE FROM local_current_membership"
|
|
" WHERE room_id = ? AND user_id = ?",
|
|
(
|
|
(room_id, state_key)
|
|
for etype, state_key in itertools.chain(to_delete, to_insert)
|
|
if etype == EventTypes.Member and self.is_mine_id(state_key)
|
|
),
|
|
)
|
|
|
|
if to_insert:
|
|
txn.executemany(
|
|
"""INSERT INTO local_current_membership
|
|
(room_id, user_id, event_id, membership)
|
|
VALUES (?, ?, ?, (SELECT membership FROM room_memberships WHERE event_id = ?))
|
|
""",
|
|
[
|
|
(room_id, key[1], ev_id, ev_id)
|
|
for key, ev_id in to_insert.items()
|
|
if key[0] == EventTypes.Member and self.is_mine_id(key[1])
|
|
],
|
|
)
|
|
|
|
txn.call_after(
|
|
self.store._curr_state_delta_stream_cache.entity_has_changed,
|
|
room_id,
|
|
stream_id,
|
|
)
|
|
|
|
# Invalidate the various caches
|
|
|
|
# Figure out the changes of membership to invalidate the
|
|
# `get_rooms_for_user` cache.
|
|
# We find out which membership events we may have deleted
|
|
# and which we have added, then we invlidate the caches for all
|
|
# those users.
|
|
members_changed = {
|
|
state_key
|
|
for ev_type, state_key in itertools.chain(to_delete, to_insert)
|
|
if ev_type == EventTypes.Member
|
|
}
|
|
|
|
for member in members_changed:
|
|
txn.call_after(
|
|
self.store.get_rooms_for_user_with_stream_ordering.invalidate,
|
|
(member,),
|
|
)
|
|
|
|
self.store._invalidate_state_caches_and_stream(
|
|
txn, room_id, members_changed
|
|
)
|
|
|
|
def _upsert_room_version_txn(self, txn: LoggingTransaction, room_id: str):
|
|
"""Update the room version in the database based off current state
|
|
events.
|
|
|
|
This is used when we're about to delete current state and we want to
|
|
ensure that the `rooms.room_version` column is up to date.
|
|
"""
|
|
|
|
sql = """
|
|
SELECT json FROM event_json
|
|
INNER JOIN current_state_events USING (room_id, event_id)
|
|
WHERE room_id = ? AND type = ? AND state_key = ?
|
|
"""
|
|
txn.execute(sql, (room_id, EventTypes.Create, ""))
|
|
row = txn.fetchone()
|
|
if row:
|
|
event_json = db_to_json(row[0])
|
|
content = event_json.get("content", {})
|
|
creator = content.get("creator")
|
|
room_version_id = content.get("room_version", RoomVersions.V1.identifier)
|
|
|
|
self.db_pool.simple_upsert_txn(
|
|
txn,
|
|
table="rooms",
|
|
keyvalues={"room_id": room_id},
|
|
values={"room_version": room_version_id},
|
|
insertion_values={"is_public": False, "creator": creator},
|
|
)
|
|
|
|
def _update_forward_extremities_txn(
|
|
self, txn, new_forward_extremities, max_stream_order
|
|
):
|
|
for room_id, new_extrem in new_forward_extremities.items():
|
|
self.db_pool.simple_delete_txn(
|
|
txn, table="event_forward_extremities", keyvalues={"room_id": room_id}
|
|
)
|
|
txn.call_after(
|
|
self.store.get_latest_event_ids_in_room.invalidate, (room_id,)
|
|
)
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="event_forward_extremities",
|
|
values=[
|
|
{"event_id": ev_id, "room_id": room_id}
|
|
for room_id, new_extrem in new_forward_extremities.items()
|
|
for ev_id in new_extrem
|
|
],
|
|
)
|
|
# We now insert into stream_ordering_to_exterm a mapping from room_id,
|
|
# new stream_ordering to new forward extremeties in the room.
|
|
# This allows us to later efficiently look up the forward extremeties
|
|
# for a room before a given stream_ordering
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="stream_ordering_to_exterm",
|
|
values=[
|
|
{
|
|
"room_id": room_id,
|
|
"event_id": event_id,
|
|
"stream_ordering": max_stream_order,
|
|
}
|
|
for room_id, new_extrem in new_forward_extremities.items()
|
|
for event_id in new_extrem
|
|
],
|
|
)
|
|
|
|
@classmethod
|
|
def _filter_events_and_contexts_for_duplicates(
|
|
cls, events_and_contexts: List[Tuple[EventBase, EventContext]]
|
|
) -> List[Tuple[EventBase, EventContext]]:
|
|
"""Ensure that we don't have the same event twice.
|
|
|
|
Pick the earliest non-outlier if there is one, else the earliest one.
|
|
|
|
Args:
|
|
events_and_contexts (list[(EventBase, EventContext)]):
|
|
Returns:
|
|
list[(EventBase, EventContext)]: filtered list
|
|
"""
|
|
new_events_and_contexts = (
|
|
OrderedDict()
|
|
) # type: OrderedDict[str, Tuple[EventBase, EventContext]]
|
|
for event, context in events_and_contexts:
|
|
prev_event_context = new_events_and_contexts.get(event.event_id)
|
|
if prev_event_context:
|
|
if not event.internal_metadata.is_outlier():
|
|
if prev_event_context[0].internal_metadata.is_outlier():
|
|
# To ensure correct ordering we pop, as OrderedDict is
|
|
# ordered by first insertion.
|
|
new_events_and_contexts.pop(event.event_id, None)
|
|
new_events_and_contexts[event.event_id] = (event, context)
|
|
else:
|
|
new_events_and_contexts[event.event_id] = (event, context)
|
|
return list(new_events_and_contexts.values())
|
|
|
|
def _update_room_depths_txn(
|
|
self,
|
|
txn,
|
|
events_and_contexts: List[Tuple[EventBase, EventContext]],
|
|
backfilled: bool,
|
|
):
|
|
"""Update min_depth for each room
|
|
|
|
Args:
|
|
txn (twisted.enterprise.adbapi.Connection): db connection
|
|
events_and_contexts (list[(EventBase, EventContext)]): events
|
|
we are persisting
|
|
backfilled (bool): True if the events were backfilled
|
|
"""
|
|
depth_updates = {} # type: Dict[str, int]
|
|
for event, context in events_and_contexts:
|
|
# Remove the any existing cache entries for the event_ids
|
|
txn.call_after(self.store._invalidate_get_event_cache, event.event_id)
|
|
if not backfilled:
|
|
txn.call_after(
|
|
self.store._events_stream_cache.entity_has_changed,
|
|
event.room_id,
|
|
event.internal_metadata.stream_ordering,
|
|
)
|
|
|
|
if not event.internal_metadata.is_outlier() and not context.rejected:
|
|
depth_updates[event.room_id] = max(
|
|
event.depth, depth_updates.get(event.room_id, event.depth)
|
|
)
|
|
|
|
for room_id, depth in depth_updates.items():
|
|
self._update_min_depth_for_room_txn(txn, room_id, depth)
|
|
|
|
def _update_outliers_txn(self, txn, events_and_contexts):
|
|
"""Update any outliers with new event info.
|
|
|
|
This turns outliers into ex-outliers (unless the new event was
|
|
rejected).
|
|
|
|
Args:
|
|
txn (twisted.enterprise.adbapi.Connection): db connection
|
|
events_and_contexts (list[(EventBase, EventContext)]): events
|
|
we are persisting
|
|
|
|
Returns:
|
|
list[(EventBase, EventContext)] new list, without events which
|
|
are already in the events table.
|
|
"""
|
|
txn.execute(
|
|
"SELECT event_id, outlier FROM events WHERE event_id in (%s)"
|
|
% (",".join(["?"] * len(events_and_contexts)),),
|
|
[event.event_id for event, _ in events_and_contexts],
|
|
)
|
|
|
|
have_persisted = {event_id: outlier for event_id, outlier in txn}
|
|
|
|
to_remove = set()
|
|
for event, context in events_and_contexts:
|
|
if event.event_id not in have_persisted:
|
|
continue
|
|
|
|
to_remove.add(event)
|
|
|
|
if context.rejected:
|
|
# If the event is rejected then we don't care if the event
|
|
# was an outlier or not.
|
|
continue
|
|
|
|
outlier_persisted = have_persisted[event.event_id]
|
|
if not event.internal_metadata.is_outlier() and outlier_persisted:
|
|
# We received a copy of an event that we had already stored as
|
|
# an outlier in the database. We now have some state at that
|
|
# so we need to update the state_groups table with that state.
|
|
|
|
# insert into event_to_state_groups.
|
|
try:
|
|
self._store_event_state_mappings_txn(txn, ((event, context),))
|
|
except Exception:
|
|
logger.exception("")
|
|
raise
|
|
|
|
metadata_json = frozendict_json_encoder.encode(
|
|
event.internal_metadata.get_dict()
|
|
)
|
|
|
|
sql = "UPDATE event_json SET internal_metadata = ? WHERE event_id = ?"
|
|
txn.execute(sql, (metadata_json, event.event_id))
|
|
|
|
# Add an entry to the ex_outlier_stream table to replicate the
|
|
# change in outlier status to our workers.
|
|
stream_order = event.internal_metadata.stream_ordering
|
|
state_group_id = context.state_group
|
|
self.db_pool.simple_insert_txn(
|
|
txn,
|
|
table="ex_outlier_stream",
|
|
values={
|
|
"event_stream_ordering": stream_order,
|
|
"event_id": event.event_id,
|
|
"state_group": state_group_id,
|
|
"instance_name": self._instance_name,
|
|
},
|
|
)
|
|
|
|
sql = "UPDATE events SET outlier = ? WHERE event_id = ?"
|
|
txn.execute(sql, (False, event.event_id))
|
|
|
|
# Update the event_backward_extremities table now that this
|
|
# event isn't an outlier any more.
|
|
self._update_backward_extremeties(txn, [event])
|
|
|
|
return [ec for ec in events_and_contexts if ec[0] not in to_remove]
|
|
|
|
def _store_event_txn(self, txn, events_and_contexts):
|
|
"""Insert new events into the event and event_json tables
|
|
|
|
Args:
|
|
txn (twisted.enterprise.adbapi.Connection): db connection
|
|
events_and_contexts (list[(EventBase, EventContext)]): events
|
|
we are persisting
|
|
"""
|
|
|
|
if not events_and_contexts:
|
|
# nothing to do here
|
|
return
|
|
|
|
def event_dict(event):
|
|
d = event.get_dict()
|
|
d.pop("redacted", None)
|
|
d.pop("redacted_because", None)
|
|
return d
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="event_json",
|
|
values=[
|
|
{
|
|
"event_id": event.event_id,
|
|
"room_id": event.room_id,
|
|
"internal_metadata": frozendict_json_encoder.encode(
|
|
event.internal_metadata.get_dict()
|
|
),
|
|
"json": frozendict_json_encoder.encode(event_dict(event)),
|
|
"format_version": event.format_version,
|
|
}
|
|
for event, _ in events_and_contexts
|
|
],
|
|
)
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="events",
|
|
values=[
|
|
{
|
|
"instance_name": self._instance_name,
|
|
"stream_ordering": event.internal_metadata.stream_ordering,
|
|
"topological_ordering": event.depth,
|
|
"depth": event.depth,
|
|
"event_id": event.event_id,
|
|
"room_id": event.room_id,
|
|
"type": event.type,
|
|
"processed": True,
|
|
"outlier": event.internal_metadata.is_outlier(),
|
|
"origin_server_ts": int(event.origin_server_ts),
|
|
"received_ts": self._clock.time_msec(),
|
|
"sender": event.sender,
|
|
"contains_url": (
|
|
"url" in event.content and isinstance(event.content["url"], str)
|
|
),
|
|
}
|
|
for event, _ in events_and_contexts
|
|
],
|
|
)
|
|
|
|
for event, _ in events_and_contexts:
|
|
if not event.internal_metadata.is_redacted():
|
|
# If we're persisting an unredacted event we go and ensure
|
|
# that we mark any redactions that reference this event as
|
|
# requiring censoring.
|
|
self.db_pool.simple_update_txn(
|
|
txn,
|
|
table="redactions",
|
|
keyvalues={"redacts": event.event_id},
|
|
updatevalues={"have_censored": False},
|
|
)
|
|
|
|
def _store_rejected_events_txn(self, txn, events_and_contexts):
|
|
"""Add rows to the 'rejections' table for received events which were
|
|
rejected
|
|
|
|
Args:
|
|
txn (twisted.enterprise.adbapi.Connection): db connection
|
|
events_and_contexts (list[(EventBase, EventContext)]): events
|
|
we are persisting
|
|
|
|
Returns:
|
|
list[(EventBase, EventContext)] new list, without the rejected
|
|
events.
|
|
"""
|
|
# Remove the rejected events from the list now that we've added them
|
|
# to the events table and the events_json table.
|
|
to_remove = set()
|
|
for event, context in events_and_contexts:
|
|
if context.rejected:
|
|
# Insert the event_id into the rejections table
|
|
self._store_rejections_txn(txn, event.event_id, context.rejected)
|
|
to_remove.add(event)
|
|
|
|
return [ec for ec in events_and_contexts if ec[0] not in to_remove]
|
|
|
|
def _update_metadata_tables_txn(
|
|
self, txn, events_and_contexts, all_events_and_contexts, backfilled
|
|
):
|
|
"""Update all the miscellaneous tables for new events
|
|
|
|
Args:
|
|
txn (twisted.enterprise.adbapi.Connection): db connection
|
|
events_and_contexts (list[(EventBase, EventContext)]): events
|
|
we are persisting
|
|
all_events_and_contexts (list[(EventBase, EventContext)]): all
|
|
events that we were going to persist. This includes events
|
|
we've already persisted, etc, that wouldn't appear in
|
|
events_and_context.
|
|
backfilled (bool): True if the events were backfilled
|
|
"""
|
|
|
|
# Insert all the push actions into the event_push_actions table.
|
|
self._set_push_actions_for_event_and_users_txn(
|
|
txn,
|
|
events_and_contexts=events_and_contexts,
|
|
all_events_and_contexts=all_events_and_contexts,
|
|
)
|
|
|
|
if not events_and_contexts:
|
|
# nothing to do here
|
|
return
|
|
|
|
for event, context in events_and_contexts:
|
|
if event.type == EventTypes.Redaction and event.redacts is not None:
|
|
# Remove the entries in the event_push_actions table for the
|
|
# redacted event.
|
|
self._remove_push_actions_for_event_id_txn(
|
|
txn, event.room_id, event.redacts
|
|
)
|
|
|
|
# Remove from relations table.
|
|
self._handle_redaction(txn, event.redacts)
|
|
|
|
# Update the event_forward_extremities, event_backward_extremities and
|
|
# event_edges tables.
|
|
self._handle_mult_prev_events(
|
|
txn, events=[event for event, _ in events_and_contexts]
|
|
)
|
|
|
|
for event, _ in events_and_contexts:
|
|
if event.type == EventTypes.Name:
|
|
# Insert into the event_search table.
|
|
self._store_room_name_txn(txn, event)
|
|
elif event.type == EventTypes.Topic:
|
|
# Insert into the event_search table.
|
|
self._store_room_topic_txn(txn, event)
|
|
elif event.type == EventTypes.Message:
|
|
# Insert into the event_search table.
|
|
self._store_room_message_txn(txn, event)
|
|
elif event.type == EventTypes.Redaction and event.redacts is not None:
|
|
# Insert into the redactions table.
|
|
self._store_redaction(txn, event)
|
|
elif event.type == EventTypes.Retention:
|
|
# Update the room_retention table.
|
|
self._store_retention_policy_for_room_txn(txn, event)
|
|
|
|
self._handle_event_relations(txn, event)
|
|
|
|
# Store the labels for this event.
|
|
labels = event.content.get(EventContentFields.LABELS)
|
|
if labels:
|
|
self.insert_labels_for_event_txn(
|
|
txn, event.event_id, labels, event.room_id, event.depth
|
|
)
|
|
|
|
if self._ephemeral_messages_enabled:
|
|
# If there's an expiry timestamp on the event, store it.
|
|
expiry_ts = event.content.get(EventContentFields.SELF_DESTRUCT_AFTER)
|
|
if isinstance(expiry_ts, int) and not event.is_state():
|
|
self._insert_event_expiry_txn(txn, event.event_id, expiry_ts)
|
|
|
|
# Insert into the room_memberships table.
|
|
self._store_room_members_txn(
|
|
txn,
|
|
[
|
|
event
|
|
for event, _ in events_and_contexts
|
|
if event.type == EventTypes.Member
|
|
],
|
|
backfilled=backfilled,
|
|
)
|
|
|
|
# Insert event_reference_hashes table.
|
|
self._store_event_reference_hashes_txn(
|
|
txn, [event for event, _ in events_and_contexts]
|
|
)
|
|
|
|
state_events_and_contexts = [
|
|
ec for ec in events_and_contexts if ec[0].is_state()
|
|
]
|
|
|
|
state_values = []
|
|
for event, context in state_events_and_contexts:
|
|
vals = {
|
|
"event_id": event.event_id,
|
|
"room_id": event.room_id,
|
|
"type": event.type,
|
|
"state_key": event.state_key,
|
|
}
|
|
|
|
# TODO: How does this work with backfilling?
|
|
if hasattr(event, "replaces_state"):
|
|
vals["prev_state"] = event.replaces_state
|
|
|
|
state_values.append(vals)
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn, table="state_events", values=state_values
|
|
)
|
|
|
|
# Prefill the event cache
|
|
self._add_to_cache(txn, events_and_contexts)
|
|
|
|
def _add_to_cache(self, txn, events_and_contexts):
|
|
to_prefill = []
|
|
|
|
rows = []
|
|
N = 200
|
|
for i in range(0, len(events_and_contexts), N):
|
|
ev_map = {e[0].event_id: e[0] for e in events_and_contexts[i : i + N]}
|
|
if not ev_map:
|
|
break
|
|
|
|
sql = (
|
|
"SELECT "
|
|
" e.event_id as event_id, "
|
|
" r.redacts as redacts,"
|
|
" rej.event_id as rejects "
|
|
" FROM events as e"
|
|
" LEFT JOIN rejections as rej USING (event_id)"
|
|
" LEFT JOIN redactions as r ON e.event_id = r.redacts"
|
|
" WHERE "
|
|
)
|
|
|
|
clause, args = make_in_list_sql_clause(
|
|
self.database_engine, "e.event_id", list(ev_map)
|
|
)
|
|
|
|
txn.execute(sql + clause, args)
|
|
rows = self.db_pool.cursor_to_dict(txn)
|
|
for row in rows:
|
|
event = ev_map[row["event_id"]]
|
|
if not row["rejects"] and not row["redacts"]:
|
|
to_prefill.append(
|
|
_EventCacheEntry(event=event, redacted_event=None)
|
|
)
|
|
|
|
def prefill():
|
|
for cache_entry in to_prefill:
|
|
self.store._get_event_cache.prefill(
|
|
(cache_entry[0].event_id,), cache_entry
|
|
)
|
|
|
|
txn.call_after(prefill)
|
|
|
|
def _store_redaction(self, txn, event):
|
|
# invalidate the cache for the redacted event
|
|
txn.call_after(self.store._invalidate_get_event_cache, event.redacts)
|
|
|
|
self.db_pool.simple_insert_txn(
|
|
txn,
|
|
table="redactions",
|
|
values={
|
|
"event_id": event.event_id,
|
|
"redacts": event.redacts,
|
|
"received_ts": self._clock.time_msec(),
|
|
},
|
|
)
|
|
|
|
def insert_labels_for_event_txn(
|
|
self, txn, event_id, labels, room_id, topological_ordering
|
|
):
|
|
"""Store the mapping between an event's ID and its labels, with one row per
|
|
(event_id, label) tuple.
|
|
|
|
Args:
|
|
txn (LoggingTransaction): The transaction to execute.
|
|
event_id (str): The event's ID.
|
|
labels (list[str]): A list of text labels.
|
|
room_id (str): The ID of the room the event was sent to.
|
|
topological_ordering (int): The position of the event in the room's topology.
|
|
"""
|
|
return self.db_pool.simple_insert_many_txn(
|
|
txn=txn,
|
|
table="event_labels",
|
|
values=[
|
|
{
|
|
"event_id": event_id,
|
|
"label": label,
|
|
"room_id": room_id,
|
|
"topological_ordering": topological_ordering,
|
|
}
|
|
for label in labels
|
|
],
|
|
)
|
|
|
|
def _insert_event_expiry_txn(self, txn, event_id, expiry_ts):
|
|
"""Save the expiry timestamp associated with a given event ID.
|
|
|
|
Args:
|
|
txn (LoggingTransaction): The database transaction to use.
|
|
event_id (str): The event ID the expiry timestamp is associated with.
|
|
expiry_ts (int): The timestamp at which to expire (delete) the event.
|
|
"""
|
|
return self.db_pool.simple_insert_txn(
|
|
txn=txn,
|
|
table="event_expiry",
|
|
values={"event_id": event_id, "expiry_ts": expiry_ts},
|
|
)
|
|
|
|
def _store_event_reference_hashes_txn(self, txn, events):
|
|
"""Store a hash for a PDU
|
|
Args:
|
|
txn (cursor):
|
|
events (list): list of Events.
|
|
"""
|
|
|
|
vals = []
|
|
for event in events:
|
|
ref_alg, ref_hash_bytes = compute_event_reference_hash(event)
|
|
vals.append(
|
|
{
|
|
"event_id": event.event_id,
|
|
"algorithm": ref_alg,
|
|
"hash": memoryview(ref_hash_bytes),
|
|
}
|
|
)
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn, table="event_reference_hashes", values=vals
|
|
)
|
|
|
|
def _store_room_members_txn(self, txn, events, backfilled):
|
|
"""Store a room member in the database.
|
|
"""
|
|
|
|
def str_or_none(val: Any) -> Optional[str]:
|
|
return val if isinstance(val, str) else None
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="room_memberships",
|
|
values=[
|
|
{
|
|
"event_id": event.event_id,
|
|
"user_id": event.state_key,
|
|
"sender": event.user_id,
|
|
"room_id": event.room_id,
|
|
"membership": event.membership,
|
|
"display_name": str_or_none(event.content.get("displayname")),
|
|
"avatar_url": str_or_none(event.content.get("avatar_url")),
|
|
}
|
|
for event in events
|
|
],
|
|
)
|
|
|
|
for event in events:
|
|
txn.call_after(
|
|
self.store._membership_stream_cache.entity_has_changed,
|
|
event.state_key,
|
|
event.internal_metadata.stream_ordering,
|
|
)
|
|
txn.call_after(
|
|
self.store.get_invited_rooms_for_local_user.invalidate,
|
|
(event.state_key,),
|
|
)
|
|
|
|
# We update the local_current_membership table only if the event is
|
|
# "current", i.e., its something that has just happened.
|
|
#
|
|
# This will usually get updated by the `current_state_events` handling,
|
|
# unless its an outlier, and an outlier is only "current" if it's an "out of
|
|
# band membership", like a remote invite or a rejection of a remote invite.
|
|
if (
|
|
self.is_mine_id(event.state_key)
|
|
and not backfilled
|
|
and event.internal_metadata.is_outlier()
|
|
and event.internal_metadata.is_out_of_band_membership()
|
|
):
|
|
self.db_pool.simple_upsert_txn(
|
|
txn,
|
|
table="local_current_membership",
|
|
keyvalues={"room_id": event.room_id, "user_id": event.state_key},
|
|
values={
|
|
"event_id": event.event_id,
|
|
"membership": event.membership,
|
|
},
|
|
)
|
|
|
|
def _handle_event_relations(self, txn, event):
|
|
"""Handles inserting relation data during peristence of events
|
|
|
|
Args:
|
|
txn
|
|
event (EventBase)
|
|
"""
|
|
relation = event.content.get("m.relates_to")
|
|
if not relation:
|
|
# No relations
|
|
return
|
|
|
|
rel_type = relation.get("rel_type")
|
|
if rel_type not in (
|
|
RelationTypes.ANNOTATION,
|
|
RelationTypes.REFERENCE,
|
|
RelationTypes.REPLACE,
|
|
):
|
|
# Unknown relation type
|
|
return
|
|
|
|
parent_id = relation.get("event_id")
|
|
if not parent_id:
|
|
# Invalid relation
|
|
return
|
|
|
|
aggregation_key = relation.get("key")
|
|
|
|
self.db_pool.simple_insert_txn(
|
|
txn,
|
|
table="event_relations",
|
|
values={
|
|
"event_id": event.event_id,
|
|
"relates_to_id": parent_id,
|
|
"relation_type": rel_type,
|
|
"aggregation_key": aggregation_key,
|
|
},
|
|
)
|
|
|
|
txn.call_after(self.store.get_relations_for_event.invalidate_many, (parent_id,))
|
|
txn.call_after(
|
|
self.store.get_aggregation_groups_for_event.invalidate_many, (parent_id,)
|
|
)
|
|
|
|
if rel_type == RelationTypes.REPLACE:
|
|
txn.call_after(self.store.get_applicable_edit.invalidate, (parent_id,))
|
|
|
|
def _handle_redaction(self, txn, redacted_event_id):
|
|
"""Handles receiving a redaction and checking whether we need to remove
|
|
any redacted relations from the database.
|
|
|
|
Args:
|
|
txn
|
|
redacted_event_id (str): The event that was redacted.
|
|
"""
|
|
|
|
self.db_pool.simple_delete_txn(
|
|
txn, table="event_relations", keyvalues={"event_id": redacted_event_id}
|
|
)
|
|
|
|
def _store_room_topic_txn(self, txn, event):
|
|
if hasattr(event, "content") and "topic" in event.content:
|
|
self.store_event_search_txn(
|
|
txn, event, "content.topic", event.content["topic"]
|
|
)
|
|
|
|
def _store_room_name_txn(self, txn, event):
|
|
if hasattr(event, "content") and "name" in event.content:
|
|
self.store_event_search_txn(
|
|
txn, event, "content.name", event.content["name"]
|
|
)
|
|
|
|
def _store_room_message_txn(self, txn, event):
|
|
if hasattr(event, "content") and "body" in event.content:
|
|
self.store_event_search_txn(
|
|
txn, event, "content.body", event.content["body"]
|
|
)
|
|
|
|
def _store_retention_policy_for_room_txn(self, txn, event):
|
|
if hasattr(event, "content") and (
|
|
"min_lifetime" in event.content or "max_lifetime" in event.content
|
|
):
|
|
if (
|
|
"min_lifetime" in event.content
|
|
and not isinstance(event.content.get("min_lifetime"), int)
|
|
) or (
|
|
"max_lifetime" in event.content
|
|
and not isinstance(event.content.get("max_lifetime"), int)
|
|
):
|
|
# Ignore the event if one of the value isn't an integer.
|
|
return
|
|
|
|
self.db_pool.simple_insert_txn(
|
|
txn=txn,
|
|
table="room_retention",
|
|
values={
|
|
"room_id": event.room_id,
|
|
"event_id": event.event_id,
|
|
"min_lifetime": event.content.get("min_lifetime"),
|
|
"max_lifetime": event.content.get("max_lifetime"),
|
|
},
|
|
)
|
|
|
|
self.store._invalidate_cache_and_stream(
|
|
txn, self.store.get_retention_policy_for_room, (event.room_id,)
|
|
)
|
|
|
|
def store_event_search_txn(self, txn, event, key, value):
|
|
"""Add event to the search table
|
|
|
|
Args:
|
|
txn (cursor):
|
|
event (EventBase):
|
|
key (str):
|
|
value (str):
|
|
"""
|
|
self.store.store_search_entries_txn(
|
|
txn,
|
|
(
|
|
SearchEntry(
|
|
key=key,
|
|
value=value,
|
|
event_id=event.event_id,
|
|
room_id=event.room_id,
|
|
stream_ordering=event.internal_metadata.stream_ordering,
|
|
origin_server_ts=event.origin_server_ts,
|
|
),
|
|
),
|
|
)
|
|
|
|
def _set_push_actions_for_event_and_users_txn(
|
|
self, txn, events_and_contexts, all_events_and_contexts
|
|
):
|
|
"""Handles moving push actions from staging table to main
|
|
event_push_actions table for all events in `events_and_contexts`.
|
|
|
|
Also ensures that all events in `all_events_and_contexts` are removed
|
|
from the push action staging area.
|
|
|
|
Args:
|
|
events_and_contexts (list[(EventBase, EventContext)]): events
|
|
we are persisting
|
|
all_events_and_contexts (list[(EventBase, EventContext)]): all
|
|
events that we were going to persist. This includes events
|
|
we've already persisted, etc, that wouldn't appear in
|
|
events_and_context.
|
|
"""
|
|
|
|
sql = """
|
|
INSERT INTO event_push_actions (
|
|
room_id, event_id, user_id, actions, stream_ordering,
|
|
topological_ordering, notif, highlight, unread
|
|
)
|
|
SELECT ?, event_id, user_id, actions, ?, ?, notif, highlight, unread
|
|
FROM event_push_actions_staging
|
|
WHERE event_id = ?
|
|
"""
|
|
|
|
if events_and_contexts:
|
|
txn.executemany(
|
|
sql,
|
|
(
|
|
(
|
|
event.room_id,
|
|
event.internal_metadata.stream_ordering,
|
|
event.depth,
|
|
event.event_id,
|
|
)
|
|
for event, _ in events_and_contexts
|
|
),
|
|
)
|
|
|
|
for event, _ in events_and_contexts:
|
|
user_ids = self.db_pool.simple_select_onecol_txn(
|
|
txn,
|
|
table="event_push_actions_staging",
|
|
keyvalues={"event_id": event.event_id},
|
|
retcol="user_id",
|
|
)
|
|
|
|
for uid in user_ids:
|
|
txn.call_after(
|
|
self.store.get_unread_event_push_actions_by_room_for_user.invalidate_many,
|
|
(event.room_id, uid),
|
|
)
|
|
|
|
# Now we delete the staging area for *all* events that were being
|
|
# persisted.
|
|
txn.executemany(
|
|
"DELETE FROM event_push_actions_staging WHERE event_id = ?",
|
|
((event.event_id,) for event, _ in all_events_and_contexts),
|
|
)
|
|
|
|
def _remove_push_actions_for_event_id_txn(self, txn, room_id, event_id):
|
|
# Sad that we have to blow away the cache for the whole room here
|
|
txn.call_after(
|
|
self.store.get_unread_event_push_actions_by_room_for_user.invalidate_many,
|
|
(room_id,),
|
|
)
|
|
txn.execute(
|
|
"DELETE FROM event_push_actions WHERE room_id = ? AND event_id = ?",
|
|
(room_id, event_id),
|
|
)
|
|
|
|
def _store_rejections_txn(self, txn, event_id, reason):
|
|
self.db_pool.simple_insert_txn(
|
|
txn,
|
|
table="rejections",
|
|
values={
|
|
"event_id": event_id,
|
|
"reason": reason,
|
|
"last_check": self._clock.time_msec(),
|
|
},
|
|
)
|
|
|
|
def _store_event_state_mappings_txn(
|
|
self, txn, events_and_contexts: Iterable[Tuple[EventBase, EventContext]]
|
|
):
|
|
state_groups = {}
|
|
for event, context in events_and_contexts:
|
|
if event.internal_metadata.is_outlier():
|
|
continue
|
|
|
|
# if the event was rejected, just give it the same state as its
|
|
# predecessor.
|
|
if context.rejected:
|
|
state_groups[event.event_id] = context.state_group_before_event
|
|
continue
|
|
|
|
state_groups[event.event_id] = context.state_group
|
|
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="event_to_state_groups",
|
|
values=[
|
|
{"state_group": state_group_id, "event_id": event_id}
|
|
for event_id, state_group_id in state_groups.items()
|
|
],
|
|
)
|
|
|
|
for event_id, state_group_id in state_groups.items():
|
|
txn.call_after(
|
|
self.store._get_state_group_for_event.prefill,
|
|
(event_id,),
|
|
state_group_id,
|
|
)
|
|
|
|
def _update_min_depth_for_room_txn(self, txn, room_id, depth):
|
|
min_depth = self.store._get_min_depth_interaction(txn, room_id)
|
|
|
|
if min_depth is not None and depth >= min_depth:
|
|
return
|
|
|
|
self.db_pool.simple_upsert_txn(
|
|
txn,
|
|
table="room_depth",
|
|
keyvalues={"room_id": room_id},
|
|
values={"min_depth": depth},
|
|
)
|
|
|
|
def _handle_mult_prev_events(self, txn, events):
|
|
"""
|
|
For the given event, update the event edges table and forward and
|
|
backward extremities tables.
|
|
"""
|
|
self.db_pool.simple_insert_many_txn(
|
|
txn,
|
|
table="event_edges",
|
|
values=[
|
|
{
|
|
"event_id": ev.event_id,
|
|
"prev_event_id": e_id,
|
|
"room_id": ev.room_id,
|
|
"is_state": False,
|
|
}
|
|
for ev in events
|
|
for e_id in ev.prev_event_ids()
|
|
],
|
|
)
|
|
|
|
self._update_backward_extremeties(txn, events)
|
|
|
|
def _update_backward_extremeties(self, txn, events):
|
|
"""Updates the event_backward_extremities tables based on the new/updated
|
|
events being persisted.
|
|
|
|
This is called for new events *and* for events that were outliers, but
|
|
are now being persisted as non-outliers.
|
|
|
|
Forward extremities are handled when we first start persisting the events.
|
|
"""
|
|
events_by_room = {} # type: Dict[str, List[EventBase]]
|
|
for ev in events:
|
|
events_by_room.setdefault(ev.room_id, []).append(ev)
|
|
|
|
query = (
|
|
"INSERT INTO event_backward_extremities (event_id, room_id)"
|
|
" SELECT ?, ? WHERE NOT EXISTS ("
|
|
" SELECT 1 FROM event_backward_extremities"
|
|
" WHERE event_id = ? AND room_id = ?"
|
|
" )"
|
|
" AND NOT EXISTS ("
|
|
" SELECT 1 FROM events WHERE event_id = ? AND room_id = ? "
|
|
" AND outlier = ?"
|
|
" )"
|
|
)
|
|
|
|
txn.executemany(
|
|
query,
|
|
[
|
|
(e_id, ev.room_id, e_id, ev.room_id, e_id, ev.room_id, False)
|
|
for ev in events
|
|
for e_id in ev.prev_event_ids()
|
|
if not ev.internal_metadata.is_outlier()
|
|
],
|
|
)
|
|
|
|
query = (
|
|
"DELETE FROM event_backward_extremities"
|
|
" WHERE event_id = ? AND room_id = ?"
|
|
)
|
|
txn.executemany(
|
|
query,
|
|
[
|
|
(ev.event_id, ev.room_id)
|
|
for ev in events
|
|
if not ev.internal_metadata.is_outlier()
|
|
],
|
|
)
|