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anonymousland-synapse/synapse/storage/databases/main/room.py
Sean Quah 0a686d1d13
Faster joins: Refactor handling of servers in room (#14954) 
Ensure that the list of servers in a partial state room always contains
the server we joined off.

Also refactor `get_partial_state_servers_at_join` to return `None` when
the given room is no longer partial stated, to explicitly indicate when
the room has partial state. Otherwise it's not clear whether an empty
list means that the room has full state, or the room is partial stated,
but the server we joined off told us that there are no servers in the
room.

Signed-off-by: Sean Quah <seanq@matrix.org>
2023-02-03 15:39:59 +00:00

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# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2019, 2022 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from abc import abstractmethod
from enum import Enum
from typing import (
TYPE_CHECKING,
AbstractSet,
Any,
Awaitable,
Collection,
Dict,
List,
Mapping,
Optional,
Set,
Tuple,
Union,
cast,
)
import attr
from synapse.api.constants import (
Direction,
EventContentFields,
EventTypes,
JoinRules,
PublicRoomsFilterFields,
)
from synapse.api.errors import StoreError
from synapse.api.room_versions import RoomVersion, RoomVersions
from synapse.config.homeserver import HomeServerConfig
from synapse.events import EventBase
from synapse.replication.tcp.streams.partial_state import UnPartialStatedRoomStream
from synapse.storage._base import SQLBaseStore, db_to_json, make_in_list_sql_clause
from synapse.storage.database import (
DatabasePool,
LoggingDatabaseConnection,
LoggingTransaction,
)
from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore
from synapse.storage.engines import PostgresEngine
from synapse.storage.types import Cursor
from synapse.storage.util.id_generators import (
AbstractStreamIdGenerator,
IdGenerator,
MultiWriterIdGenerator,
StreamIdGenerator,
)
from synapse.types import JsonDict, RetentionPolicy, StrCollection, ThirdPartyInstanceID
from synapse.util import json_encoder
from synapse.util.caches.descriptors import cached, cachedList
from synapse.util.stringutils import MXC_REGEX
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
@attr.s(slots=True, frozen=True, auto_attribs=True)
class RatelimitOverride:
messages_per_second: int
burst_count: int
class RoomSortOrder(Enum):
"""
Enum to define the sorting method used when returning rooms with get_rooms_paginate
NAME = sort rooms alphabetically by name
JOINED_MEMBERS = sort rooms by membership size, highest to lowest
"""
# ALPHABETICAL and SIZE are deprecated.
# ALPHABETICAL is the same as NAME.
ALPHABETICAL = "alphabetical"
# SIZE is the same as JOINED_MEMBERS.
SIZE = "size"
NAME = "name"
CANONICAL_ALIAS = "canonical_alias"
JOINED_MEMBERS = "joined_members"
JOINED_LOCAL_MEMBERS = "joined_local_members"
VERSION = "version"
CREATOR = "creator"
ENCRYPTION = "encryption"
FEDERATABLE = "federatable"
PUBLIC = "public"
JOIN_RULES = "join_rules"
GUEST_ACCESS = "guest_access"
HISTORY_VISIBILITY = "history_visibility"
STATE_EVENTS = "state_events"
@attr.s(slots=True, frozen=True, auto_attribs=True)
class PartialStateResyncInfo:
joined_via: Optional[str]
servers_in_room: Set[str] = attr.ib(factory=set)
class RoomWorkerStore(CacheInvalidationWorkerStore):
def __init__(
self,
database: DatabasePool,
db_conn: LoggingDatabaseConnection,
hs: "HomeServer",
):
super().__init__(database, db_conn, hs)
self.config: HomeServerConfig = hs.config
self._un_partial_stated_rooms_stream_id_gen: AbstractStreamIdGenerator
if isinstance(database.engine, PostgresEngine):
self._un_partial_stated_rooms_stream_id_gen = MultiWriterIdGenerator(
db_conn=db_conn,
db=database,
notifier=hs.get_replication_notifier(),
stream_name="un_partial_stated_room_stream",
instance_name=self._instance_name,
tables=[
("un_partial_stated_room_stream", "instance_name", "stream_id")
],
sequence_name="un_partial_stated_room_stream_sequence",
# TODO(faster_joins, multiple writers) Support multiple writers.
writers=["master"],
)
else:
self._un_partial_stated_rooms_stream_id_gen = StreamIdGenerator(
db_conn,
hs.get_replication_notifier(),
"un_partial_stated_room_stream",
"stream_id",
)
def process_replication_position(
self, stream_name: str, instance_name: str, token: int
) -> None:
if stream_name == UnPartialStatedRoomStream.NAME:
self._un_partial_stated_rooms_stream_id_gen.advance(instance_name, token)
return super().process_replication_position(stream_name, instance_name, token)
async def store_room(
self,
room_id: str,
room_creator_user_id: str,
is_public: bool,
room_version: RoomVersion,
) -> None:
"""Stores a room.
Args:
room_id: The desired room ID, can be None.
room_creator_user_id: The user ID of the room creator.
is_public: True to indicate that this room should appear in
public room lists.
room_version: The version of the room
Raises:
StoreError if the room could not be stored.
"""
try:
await self.db_pool.simple_insert(
"rooms",
{
"room_id": room_id,
"creator": room_creator_user_id,
"is_public": is_public,
"room_version": room_version.identifier,
"has_auth_chain_index": True,
},
desc="store_room",
)
except Exception as e:
logger.error("store_room with room_id=%s failed: %s", room_id, e)
raise StoreError(500, "Problem creating room.")
async def get_room(self, room_id: str) -> Optional[Dict[str, Any]]:
"""Retrieve a room.
Args:
room_id: The ID of the room to retrieve.
Returns:
A dict containing the room information, or None if the room is unknown.
"""
return await self.db_pool.simple_select_one(
table="rooms",
keyvalues={"room_id": room_id},
retcols=("room_id", "is_public", "creator", "has_auth_chain_index"),
desc="get_room",
allow_none=True,
)
async def get_room_with_stats(self, room_id: str) -> Optional[Dict[str, Any]]:
"""Retrieve room with statistics.
Args:
room_id: The ID of the room to retrieve.
Returns:
A dict containing the room information, or None if the room is unknown.
"""
def get_room_with_stats_txn(
txn: LoggingTransaction, room_id: str
) -> Optional[Dict[str, Any]]:
sql = """
SELECT room_id, state.name, state.canonical_alias, curr.joined_members,
curr.local_users_in_room AS joined_local_members, rooms.room_version AS version,
rooms.creator, state.encryption, state.is_federatable AS federatable,
rooms.is_public AS public, state.join_rules, state.guest_access,
state.history_visibility, curr.current_state_events AS state_events,
state.avatar, state.topic, state.room_type
FROM rooms
LEFT JOIN room_stats_state state USING (room_id)
LEFT JOIN room_stats_current curr USING (room_id)
WHERE room_id = ?
"""
txn.execute(sql, [room_id])
# Catch error if sql returns empty result to return "None" instead of an error
try:
res = self.db_pool.cursor_to_dict(txn)[0]
except IndexError:
return None
res["federatable"] = bool(res["federatable"])
res["public"] = bool(res["public"])
return res
return await self.db_pool.runInteraction(
"get_room_with_stats", get_room_with_stats_txn, room_id
)
async def get_public_room_ids(self) -> List[str]:
return await self.db_pool.simple_select_onecol(
table="rooms",
keyvalues={"is_public": True},
retcol="room_id",
desc="get_public_room_ids",
)
def _construct_room_type_where_clause(
self, room_types: Union[List[Union[str, None]], None]
) -> Tuple[Union[str, None], list]:
if not room_types:
return None, []
# Since None is used to represent a room without a type, care needs to
# be taken into account when constructing the where clause.
clauses = []
args: list = []
room_types_set = set(room_types)
# We use None to represent a room without a type.
if None in room_types_set:
clauses.append("room_type IS NULL")
room_types_set.remove(None)
# If there are other room types, generate the proper clause.
if room_types:
list_clause, args = make_in_list_sql_clause(
self.database_engine, "room_type", room_types_set
)
clauses.append(list_clause)
return f"({' OR '.join(clauses)})", args
async def count_public_rooms(
self,
network_tuple: Optional[ThirdPartyInstanceID],
ignore_non_federatable: bool,
search_filter: Optional[dict],
) -> int:
"""Counts the number of public rooms as tracked in the room_stats_current
and room_stats_state table.
Args:
network_tuple
ignore_non_federatable: If true filters out non-federatable rooms
search_filter
"""
def _count_public_rooms_txn(txn: LoggingTransaction) -> int:
query_args = []
if network_tuple:
if network_tuple.appservice_id:
published_sql = """
SELECT room_id from appservice_room_list
WHERE appservice_id = ? AND network_id = ?
"""
query_args.append(network_tuple.appservice_id)
assert network_tuple.network_id is not None
query_args.append(network_tuple.network_id)
else:
published_sql = """
SELECT room_id FROM rooms WHERE is_public
"""
else:
published_sql = """
SELECT room_id FROM rooms WHERE is_public
UNION SELECT room_id from appservice_room_list
"""
room_type_clause, args = self._construct_room_type_where_clause(
search_filter.get(PublicRoomsFilterFields.ROOM_TYPES, None)
if search_filter
else None
)
room_type_clause = f" AND {room_type_clause}" if room_type_clause else ""
query_args += args
sql = f"""
SELECT
COUNT(*)
FROM (
{published_sql}
) published
INNER JOIN room_stats_state USING (room_id)
INNER JOIN room_stats_current USING (room_id)
WHERE
(
join_rules = '{JoinRules.PUBLIC}'
OR join_rules = '{JoinRules.KNOCK}'
OR join_rules = '{JoinRules.KNOCK_RESTRICTED}'
OR history_visibility = 'world_readable'
)
{room_type_clause}
AND joined_members > 0
"""
txn.execute(sql, query_args)
return cast(Tuple[int], txn.fetchone())[0]
return await self.db_pool.runInteraction(
"count_public_rooms", _count_public_rooms_txn
)
async def get_room_count(self) -> int:
"""Retrieve the total number of rooms."""
def f(txn: LoggingTransaction) -> int:
sql = "SELECT count(*) FROM rooms"
txn.execute(sql)
row = cast(Tuple[int], txn.fetchone())
return row[0]
return await self.db_pool.runInteraction("get_rooms", f)
async def get_largest_public_rooms(
self,
network_tuple: Optional[ThirdPartyInstanceID],
search_filter: Optional[dict],
limit: Optional[int],
bounds: Optional[Tuple[int, str]],
forwards: bool,
ignore_non_federatable: bool = False,
) -> List[Dict[str, Any]]:
"""Gets the largest public rooms (where largest is in terms of joined
members, as tracked in the statistics table).
Args:
network_tuple
search_filter
limit: Maxmimum number of rows to return, unlimited otherwise.
bounds: An uppoer or lower bound to apply to result set if given,
consists of a joined member count and room_id (these are
excluded from result set).
forwards: true iff going forwards, going backwards otherwise
ignore_non_federatable: If true filters out non-federatable rooms.
Returns:
Rooms in order: biggest number of joined users first.
We then arbitrarily use the room_id as a tie breaker.
"""
where_clauses = []
query_args: List[Union[str, int]] = []
if network_tuple:
if network_tuple.appservice_id:
published_sql = """
SELECT room_id from appservice_room_list
WHERE appservice_id = ? AND network_id = ?
"""
query_args.append(network_tuple.appservice_id)
assert network_tuple.network_id is not None
query_args.append(network_tuple.network_id)
else:
published_sql = """
SELECT room_id FROM rooms WHERE is_public
"""
else:
published_sql = """
SELECT room_id FROM rooms WHERE is_public
UNION SELECT room_id from appservice_room_list
"""
# Work out the bounds if we're given them, these bounds look slightly
# odd, but are designed to help query planner use indices by pulling
# out a common bound.
if bounds:
last_joined_members, last_room_id = bounds
if forwards:
where_clauses.append(
"""
joined_members <= ? AND (
joined_members < ? OR room_id < ?
)
"""
)
else:
where_clauses.append(
"""
joined_members >= ? AND (
joined_members > ? OR room_id > ?
)
"""
)
query_args += [last_joined_members, last_joined_members, last_room_id]
if ignore_non_federatable:
where_clauses.append("is_federatable")
if search_filter and search_filter.get(
PublicRoomsFilterFields.GENERIC_SEARCH_TERM, None
):
search_term = (
"%" + search_filter[PublicRoomsFilterFields.GENERIC_SEARCH_TERM] + "%"
)
where_clauses.append(
"""
(
LOWER(name) LIKE ?
OR LOWER(topic) LIKE ?
OR LOWER(canonical_alias) LIKE ?
)
"""
)
query_args += [
search_term.lower(),
search_term.lower(),
search_term.lower(),
]
room_type_clause, args = self._construct_room_type_where_clause(
search_filter.get(PublicRoomsFilterFields.ROOM_TYPES, None)
if search_filter
else None
)
if room_type_clause:
where_clauses.append(room_type_clause)
query_args += args
where_clause = ""
if where_clauses:
where_clause = " AND " + " AND ".join(where_clauses)
dir = "DESC" if forwards else "ASC"
sql = f"""
SELECT
room_id, name, topic, canonical_alias, joined_members,
avatar, history_visibility, guest_access, join_rules, room_type
FROM (
{published_sql}
) published
INNER JOIN room_stats_state USING (room_id)
INNER JOIN room_stats_current USING (room_id)
WHERE
(
join_rules = '{JoinRules.PUBLIC}'
OR join_rules = '{JoinRules.KNOCK}'
OR join_rules = '{JoinRules.KNOCK_RESTRICTED}'
OR history_visibility = 'world_readable'
)
AND joined_members > 0
{where_clause}
ORDER BY
joined_members {dir},
room_id {dir}
"""
if limit is not None:
query_args.append(limit)
sql += """
LIMIT ?
"""
def _get_largest_public_rooms_txn(
txn: LoggingTransaction,
) -> List[Dict[str, Any]]:
txn.execute(sql, query_args)
results = self.db_pool.cursor_to_dict(txn)
if not forwards:
results.reverse()
return results
ret_val = await self.db_pool.runInteraction(
"get_largest_public_rooms", _get_largest_public_rooms_txn
)
return ret_val
@cached(max_entries=10000)
async def is_room_blocked(self, room_id: str) -> Optional[bool]:
return await self.db_pool.simple_select_one_onecol(
table="blocked_rooms",
keyvalues={"room_id": room_id},
retcol="1",
allow_none=True,
desc="is_room_blocked",
)
async def room_is_blocked_by(self, room_id: str) -> Optional[str]:
"""
Function to retrieve user who has blocked the room.
user_id is non-nullable
It returns None if the room is not blocked.
"""
return await self.db_pool.simple_select_one_onecol(
table="blocked_rooms",
keyvalues={"room_id": room_id},
retcol="user_id",
allow_none=True,
desc="room_is_blocked_by",
)
async def get_rooms_paginate(
self,
start: int,
limit: int,
order_by: str,
reverse_order: bool,
search_term: Optional[str],
) -> Tuple[List[Dict[str, Any]], int]:
"""Function to retrieve a paginated list of rooms as json.
Args:
start: offset in the list
limit: maximum amount of rooms to retrieve
order_by: the sort order of the returned list
reverse_order: whether to reverse the room list
search_term: a string to filter room names,
canonical alias and room ids by.
Room ID must match exactly. Canonical alias must match a substring of the local part.
Returns:
A list of room dicts and an integer representing the total number of
rooms that exist given this query
"""
# Filter room names by a string
where_statement = ""
search_pattern: List[object] = []
if search_term:
where_statement = """
WHERE LOWER(state.name) LIKE ?
OR LOWER(state.canonical_alias) LIKE ?
OR state.room_id = ?
"""
# Our postgres db driver converts ? -> %s in SQL strings as that's the
# placeholder for postgres.
# HOWEVER, if you put a % into your SQL then everything goes wibbly.
# To get around this, we're going to surround search_term with %'s
# before giving it to the database in python instead
search_pattern = [
"%" + search_term.lower() + "%",
"#%" + search_term.lower() + "%:%",
search_term,
]
# Set ordering
if RoomSortOrder(order_by) == RoomSortOrder.SIZE:
# Deprecated in favour of RoomSortOrder.JOINED_MEMBERS
order_by_column = "curr.joined_members"
order_by_asc = False
elif RoomSortOrder(order_by) == RoomSortOrder.ALPHABETICAL:
# Deprecated in favour of RoomSortOrder.NAME
order_by_column = "state.name"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.NAME:
order_by_column = "state.name"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.CANONICAL_ALIAS:
order_by_column = "state.canonical_alias"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.JOINED_MEMBERS:
order_by_column = "curr.joined_members"
order_by_asc = False
elif RoomSortOrder(order_by) == RoomSortOrder.JOINED_LOCAL_MEMBERS:
order_by_column = "curr.local_users_in_room"
order_by_asc = False
elif RoomSortOrder(order_by) == RoomSortOrder.VERSION:
order_by_column = "rooms.room_version"
order_by_asc = False
elif RoomSortOrder(order_by) == RoomSortOrder.CREATOR:
order_by_column = "rooms.creator"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.ENCRYPTION:
order_by_column = "state.encryption"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.FEDERATABLE:
order_by_column = "state.is_federatable"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.PUBLIC:
order_by_column = "rooms.is_public"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.JOIN_RULES:
order_by_column = "state.join_rules"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.GUEST_ACCESS:
order_by_column = "state.guest_access"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.HISTORY_VISIBILITY:
order_by_column = "state.history_visibility"
order_by_asc = True
elif RoomSortOrder(order_by) == RoomSortOrder.STATE_EVENTS:
order_by_column = "curr.current_state_events"
order_by_asc = False
else:
raise StoreError(
500, "Incorrect value for order_by provided: %s" % order_by
)
# Whether to return the list in reverse order
if reverse_order:
# Flip the boolean
order_by_asc = not order_by_asc
# Create one query for getting the limited number of events that the user asked
# for, and another query for getting the total number of events that could be
# returned. Thus allowing us to see if there are more events to paginate through
info_sql = """
SELECT state.room_id, state.name, state.canonical_alias, curr.joined_members,
curr.local_users_in_room, rooms.room_version, rooms.creator,
state.encryption, state.is_federatable, rooms.is_public, state.join_rules,
state.guest_access, state.history_visibility, curr.current_state_events,
state.room_type
FROM room_stats_state state
INNER JOIN room_stats_current curr USING (room_id)
INNER JOIN rooms USING (room_id)
{where}
ORDER BY {order_by} {direction}, state.room_id {direction}
LIMIT ?
OFFSET ?
""".format(
where=where_statement,
order_by=order_by_column,
direction="ASC" if order_by_asc else "DESC",
)
# Use a nested SELECT statement as SQL can't count(*) with an OFFSET
count_sql = """
SELECT count(*) FROM (
SELECT room_id FROM room_stats_state state
{where}
) AS get_room_ids
""".format(
where=where_statement,
)
def _get_rooms_paginate_txn(
txn: LoggingTransaction,
) -> Tuple[List[Dict[str, Any]], int]:
# Add the search term into the WHERE clause
# and execute the data query
txn.execute(info_sql, search_pattern + [limit, start])
# Refactor room query data into a structured dictionary
rooms = []
for room in txn:
rooms.append(
{
"room_id": room[0],
"name": room[1],
"canonical_alias": room[2],
"joined_members": room[3],
"joined_local_members": room[4],
"version": room[5],
"creator": room[6],
"encryption": room[7],
# room_stats_state.federatable is an integer on sqlite.
"federatable": bool(room[8]),
# rooms.is_public is an integer on sqlite.
"public": bool(room[9]),
"join_rules": room[10],
"guest_access": room[11],
"history_visibility": room[12],
"state_events": room[13],
"room_type": room[14],
}
)
# Execute the count query
# Add the search term into the WHERE clause if present
txn.execute(count_sql, search_pattern)
room_count = cast(Tuple[int], txn.fetchone())
return rooms, room_count[0]
return await self.db_pool.runInteraction(
"get_rooms_paginate",
_get_rooms_paginate_txn,
)
@cached(max_entries=10000)
async def get_ratelimit_for_user(self, user_id: str) -> Optional[RatelimitOverride]:
"""Check if there are any overrides for ratelimiting for the given user
Args:
user_id: user ID of the user
Returns:
RatelimitOverride if there is an override, else None. If the contents
of RatelimitOverride are None or 0 then ratelimitng has been
disabled for that user entirely.
"""
row = await self.db_pool.simple_select_one(
table="ratelimit_override",
keyvalues={"user_id": user_id},
retcols=("messages_per_second", "burst_count"),
allow_none=True,
desc="get_ratelimit_for_user",
)
if row:
return RatelimitOverride(
messages_per_second=row["messages_per_second"],
burst_count=row["burst_count"],
)
else:
return None
async def set_ratelimit_for_user(
self, user_id: str, messages_per_second: int, burst_count: int
) -> None:
"""Sets whether a user is set an overridden ratelimit.
Args:
user_id: user ID of the user
messages_per_second: The number of actions that can be performed in a second.
burst_count: How many actions that can be performed before being limited.
"""
def set_ratelimit_txn(txn: LoggingTransaction) -> None:
self.db_pool.simple_upsert_txn(
txn,
table="ratelimit_override",
keyvalues={"user_id": user_id},
values={
"messages_per_second": messages_per_second,
"burst_count": burst_count,
},
)
self._invalidate_cache_and_stream(
txn, self.get_ratelimit_for_user, (user_id,)
)
await self.db_pool.runInteraction("set_ratelimit", set_ratelimit_txn)
async def delete_ratelimit_for_user(self, user_id: str) -> None:
"""Delete an overridden ratelimit for a user.
Args:
user_id: user ID of the user
"""
def delete_ratelimit_txn(txn: LoggingTransaction) -> None:
row = self.db_pool.simple_select_one_txn(
txn,
table="ratelimit_override",
keyvalues={"user_id": user_id},
retcols=["user_id"],
allow_none=True,
)
if not row:
return
# They are there, delete them.
self.db_pool.simple_delete_one_txn(
txn, "ratelimit_override", keyvalues={"user_id": user_id}
)
self._invalidate_cache_and_stream(
txn, self.get_ratelimit_for_user, (user_id,)
)
await self.db_pool.runInteraction("delete_ratelimit", delete_ratelimit_txn)
@cached()
async def get_retention_policy_for_room(self, room_id: str) -> RetentionPolicy:
"""Get the retention policy for a given room.
If no retention policy has been found for this room, returns a policy defined
by the configured default policy (which has None as both the 'min_lifetime' and
the 'max_lifetime' if no default policy has been defined in the server's
configuration).
If support for retention policies is disabled, a policy with a 'min_lifetime' and
'max_lifetime' of None is returned.
Args:
room_id: The ID of the room to get the retention policy of.
Returns:
A dict containing "min_lifetime" and "max_lifetime" for this room.
"""
# If the room retention feature is disabled, return a policy with no minimum nor
# maximum. This prevents incorrectly filtering out events when sending to
# the client.
if not self.config.retention.retention_enabled:
return RetentionPolicy()
def get_retention_policy_for_room_txn(
txn: LoggingTransaction,
) -> List[Dict[str, Optional[int]]]:
txn.execute(
"""
SELECT min_lifetime, max_lifetime FROM room_retention
INNER JOIN current_state_events USING (event_id, room_id)
WHERE room_id = ?;
""",
(room_id,),
)
return self.db_pool.cursor_to_dict(txn)
ret = await self.db_pool.runInteraction(
"get_retention_policy_for_room",
get_retention_policy_for_room_txn,
)
# If we don't know this room ID, ret will be None, in this case return the default
# policy.
if not ret:
return RetentionPolicy(
min_lifetime=self.config.retention.retention_default_min_lifetime,
max_lifetime=self.config.retention.retention_default_max_lifetime,
)
min_lifetime = ret[0]["min_lifetime"]
max_lifetime = ret[0]["max_lifetime"]
# If one of the room's policy's attributes isn't defined, use the matching
# attribute from the default policy.
# The default values will be None if no default policy has been defined, or if one
# of the attributes is missing from the default policy.
if min_lifetime is None:
min_lifetime = self.config.retention.retention_default_min_lifetime
if max_lifetime is None:
max_lifetime = self.config.retention.retention_default_max_lifetime
return RetentionPolicy(
min_lifetime=min_lifetime,
max_lifetime=max_lifetime,
)
async def get_media_mxcs_in_room(self, room_id: str) -> Tuple[List[str], List[str]]:
"""Retrieves all the local and remote media MXC URIs in a given room
Args:
room_id
Returns:
The local and remote media as a lists of the media IDs.
"""
def _get_media_mxcs_in_room_txn(
txn: LoggingTransaction,
) -> Tuple[List[str], List[str]]:
local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
local_media_mxcs = []
remote_media_mxcs = []
# Convert the IDs to MXC URIs
for media_id in local_mxcs:
local_media_mxcs.append("mxc://%s/%s" % (self.hs.hostname, media_id))
for hostname, media_id in remote_mxcs:
remote_media_mxcs.append("mxc://%s/%s" % (hostname, media_id))
return local_media_mxcs, remote_media_mxcs
return await self.db_pool.runInteraction(
"get_media_ids_in_room", _get_media_mxcs_in_room_txn
)
async def quarantine_media_ids_in_room(
self, room_id: str, quarantined_by: str
) -> int:
"""For a room loops through all events with media and quarantines
the associated media
"""
logger.info("Quarantining media in room: %s", room_id)
def _quarantine_media_in_room_txn(txn: LoggingTransaction) -> int:
local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
return self._quarantine_media_txn(
txn, local_mxcs, remote_mxcs, quarantined_by
)
return await self.db_pool.runInteraction(
"quarantine_media_in_room", _quarantine_media_in_room_txn
)
def _get_media_mxcs_in_room_txn(
self, txn: LoggingTransaction, room_id: str
) -> Tuple[List[str], List[Tuple[str, str]]]:
"""Retrieves all the local and remote media MXC URIs in a given room
Returns:
The local and remote media as a lists of tuples where the key is
the hostname and the value is the media ID.
"""
sql = """
SELECT stream_ordering, json FROM events
JOIN event_json USING (room_id, event_id)
WHERE room_id = ?
%(where_clause)s
AND contains_url = ? AND outlier = ?
ORDER BY stream_ordering DESC
LIMIT ?
"""
txn.execute(sql % {"where_clause": ""}, (room_id, True, False, 100))
local_media_mxcs = []
remote_media_mxcs = []
while True:
next_token = None
for stream_ordering, content_json in txn:
next_token = stream_ordering
event_json = db_to_json(content_json)
content = event_json["content"]
content_url = content.get("url")
info = content.get("info")
if isinstance(info, dict):
thumbnail_url = info.get("thumbnail_url")
else:
thumbnail_url = None
for url in (content_url, thumbnail_url):
if not url:
continue
matches = MXC_REGEX.match(url)
if matches:
hostname = matches.group(1)
media_id = matches.group(2)
if hostname == self.hs.hostname:
local_media_mxcs.append(media_id)
else:
remote_media_mxcs.append((hostname, media_id))
if next_token is None:
# We've gone through the whole room, so we're finished.
break
txn.execute(
sql % {"where_clause": "AND stream_ordering < ?"},
(room_id, next_token, True, False, 100),
)
return local_media_mxcs, remote_media_mxcs
async def quarantine_media_by_id(
self,
server_name: str,
media_id: str,
quarantined_by: Optional[str],
) -> int:
"""quarantines or unquarantines a single local or remote media id
Args:
server_name: The name of the server that holds this media
media_id: The ID of the media to be quarantined
quarantined_by: The user ID that initiated the quarantine request
If it is `None` media will be removed from quarantine
"""
logger.info("Quarantining media: %s/%s", server_name, media_id)
is_local = server_name == self.config.server.server_name
def _quarantine_media_by_id_txn(txn: LoggingTransaction) -> int:
local_mxcs = [media_id] if is_local else []
remote_mxcs = [(server_name, media_id)] if not is_local else []
return self._quarantine_media_txn(
txn, local_mxcs, remote_mxcs, quarantined_by
)
return await self.db_pool.runInteraction(
"quarantine_media_by_user", _quarantine_media_by_id_txn
)
async def quarantine_media_ids_by_user(
self, user_id: str, quarantined_by: str
) -> int:
"""quarantines all local media associated with a single user
Args:
user_id: The ID of the user to quarantine media of
quarantined_by: The ID of the user who made the quarantine request
"""
def _quarantine_media_by_user_txn(txn: LoggingTransaction) -> int:
local_media_ids = self._get_media_ids_by_user_txn(txn, user_id)
return self._quarantine_media_txn(txn, local_media_ids, [], quarantined_by)
return await self.db_pool.runInteraction(
"quarantine_media_by_user", _quarantine_media_by_user_txn
)
def _get_media_ids_by_user_txn(
self, txn: LoggingTransaction, user_id: str, filter_quarantined: bool = True
) -> List[str]:
"""Retrieves local media IDs by a given user
Args:
txn (cursor)
user_id: The ID of the user to retrieve media IDs of
Returns:
The local and remote media as a lists of tuples where the key is
the hostname and the value is the media ID.
"""
# Local media
sql = """
SELECT media_id
FROM local_media_repository
WHERE user_id = ?
"""
if filter_quarantined:
sql += "AND quarantined_by IS NULL"
txn.execute(sql, (user_id,))
local_media_ids = [row[0] for row in txn]
# TODO: Figure out all remote media a user has referenced in a message
return local_media_ids
def _quarantine_media_txn(
self,
txn: LoggingTransaction,
local_mxcs: List[str],
remote_mxcs: List[Tuple[str, str]],
quarantined_by: Optional[str],
) -> int:
"""Quarantine and unquarantine local and remote media items
Args:
txn (cursor)
local_mxcs: A list of local mxc URLs
remote_mxcs: A list of (remote server, media id) tuples representing
remote mxc URLs
quarantined_by: The ID of the user who initiated the quarantine request
If it is `None` media will be removed from quarantine
Returns:
The total number of media items quarantined
"""
# Update all the tables to set the quarantined_by flag
sql = """
UPDATE local_media_repository
SET quarantined_by = ?
WHERE media_id = ?
"""
# set quarantine
if quarantined_by is not None:
sql += "AND safe_from_quarantine = ?"
txn.executemany(
sql, [(quarantined_by, media_id, False) for media_id in local_mxcs]
)
# remove from quarantine
else:
txn.executemany(
sql, [(quarantined_by, media_id) for media_id in local_mxcs]
)
# Note that a rowcount of -1 can be used to indicate no rows were affected.
total_media_quarantined = txn.rowcount if txn.rowcount > 0 else 0
txn.executemany(
"""
UPDATE remote_media_cache
SET quarantined_by = ?
WHERE media_origin = ? AND media_id = ?
""",
((quarantined_by, origin, media_id) for origin, media_id in remote_mxcs),
)
total_media_quarantined += txn.rowcount if txn.rowcount > 0 else 0
return total_media_quarantined
async def get_rooms_for_retention_period_in_range(
self, min_ms: Optional[int], max_ms: Optional[int], include_null: bool = False
) -> Dict[str, RetentionPolicy]:
"""Retrieves all of the rooms within the given retention range.
Optionally includes the rooms which don't have a retention policy.
Args:
min_ms: Duration in milliseconds that define the lower limit of
the range to handle (exclusive). If None, doesn't set a lower limit.
max_ms: Duration in milliseconds that define the upper limit of
the range to handle (inclusive). If None, doesn't set an upper limit.
include_null: Whether to include rooms which retention policy is NULL
in the returned set.
Returns:
The rooms within this range, along with their retention
policy. The key is "room_id", and maps to a dict describing the retention
policy associated with this room ID. The keys for this nested dict are
"min_lifetime" (int|None), and "max_lifetime" (int|None).
"""
def get_rooms_for_retention_period_in_range_txn(
txn: LoggingTransaction,
) -> Dict[str, RetentionPolicy]:
range_conditions = []
args = []
if min_ms is not None:
range_conditions.append("max_lifetime > ?")
args.append(min_ms)
if max_ms is not None:
range_conditions.append("max_lifetime <= ?")
args.append(max_ms)
# Do a first query which will retrieve the rooms that have a retention policy
# in their current state.
sql = """
SELECT room_id, min_lifetime, max_lifetime FROM room_retention
INNER JOIN current_state_events USING (event_id, room_id)
"""
if len(range_conditions):
sql += " WHERE (" + " AND ".join(range_conditions) + ")"
if include_null:
sql += " OR max_lifetime IS NULL"
txn.execute(sql, args)
rows = self.db_pool.cursor_to_dict(txn)
rooms_dict = {}
for row in rows:
rooms_dict[row["room_id"]] = RetentionPolicy(
min_lifetime=row["min_lifetime"],
max_lifetime=row["max_lifetime"],
)
if include_null:
# If required, do a second query that retrieves all of the rooms we know
# of so we can handle rooms with no retention policy.
sql = "SELECT DISTINCT room_id FROM current_state_events"
txn.execute(sql)
rows = self.db_pool.cursor_to_dict(txn)
# If a room isn't already in the dict (i.e. it doesn't have a retention
# policy in its state), add it with a null policy.
for row in rows:
if row["room_id"] not in rooms_dict:
rooms_dict[row["room_id"]] = RetentionPolicy()
return rooms_dict
return await self.db_pool.runInteraction(
"get_rooms_for_retention_period_in_range",
get_rooms_for_retention_period_in_range_txn,
)
async def get_partial_state_servers_at_join(
self, room_id: str
) -> Optional[AbstractSet[str]]:
"""Gets the set of servers in a partial state room at the time we joined it.
Returns:
The `servers_in_room` list from the `/send_join` response for partial state
rooms. May not be accurate or complete, as it comes from a remote
homeserver.
`None` for full state rooms.
"""
servers_in_room = await self._get_partial_state_servers_at_join(room_id)
if len(servers_in_room) == 0:
return None
return servers_in_room
@cached(iterable=True)
async def _get_partial_state_servers_at_join(
self, room_id: str
) -> AbstractSet[str]:
return frozenset(
await self.db_pool.simple_select_onecol(
"partial_state_rooms_servers",
keyvalues={"room_id": room_id},
retcol="server_name",
desc="get_partial_state_servers_at_join",
)
)
async def get_partial_state_room_resync_info(
self,
) -> Mapping[str, PartialStateResyncInfo]:
"""Get all rooms containing events with partial state, and the information
needed to restart a "resync" of those rooms.
Returns:
A dictionary of rooms with partial state, with room IDs as keys and
lists of servers in rooms as values.
"""
room_servers: Dict[str, PartialStateResyncInfo] = {}
rows = await self.db_pool.simple_select_list(
table="partial_state_rooms",
keyvalues={},
retcols=("room_id", "joined_via"),
desc="get_server_which_served_partial_join",
)
for row in rows:
room_id = row["room_id"]
joined_via = row["joined_via"]
room_servers[room_id] = PartialStateResyncInfo(joined_via=joined_via)
rows = await self.db_pool.simple_select_list(
"partial_state_rooms_servers",
keyvalues=None,
retcols=("room_id", "server_name"),
desc="get_partial_state_rooms",
)
for row in rows:
room_id = row["room_id"]
server_name = row["server_name"]
entry = room_servers.get(room_id)
if entry is None:
# There is a foreign key constraint which enforces that every room_id in
# partial_state_rooms_servers appears in partial_state_rooms. So we
# expect `entry` to be non-null. (This reasoning fails if we've
# partial-joined between the two SELECTs, but this is unlikely to happen
# in practice.)
continue
entry.servers_in_room.add(server_name)
return room_servers
@cached(max_entries=10000)
async def is_partial_state_room(self, room_id: str) -> bool:
"""Checks if this room has partial state.
Returns true if this is a "partial-state" room, which means that the state
at events in the room, and `current_state_events`, may not yet be
complete.
"""
entry = await self.db_pool.simple_select_one_onecol(
table="partial_state_rooms",
keyvalues={"room_id": room_id},
retcol="room_id",
allow_none=True,
desc="is_partial_state_room",
)
return entry is not None
@cachedList(cached_method_name="is_partial_state_room", list_name="room_ids")
async def is_partial_state_room_batched(
self, room_ids: StrCollection
) -> Mapping[str, bool]:
"""Checks if the given rooms have partial state.
Returns true for "partial-state" rooms, which means that the state
at events in the room, and `current_state_events`, may not yet be
complete.
"""
rows: List[Dict[str, str]] = await self.db_pool.simple_select_many_batch(
table="partial_state_rooms",
column="room_id",
iterable=room_ids,
retcols=("room_id",),
desc="is_partial_state_room_batched",
)
partial_state_rooms = {row_dict["room_id"] for row_dict in rows}
return {room_id: room_id in partial_state_rooms for room_id in room_ids}
async def get_join_event_id_and_device_lists_stream_id_for_partial_state(
self, room_id: str
) -> Tuple[str, int]:
"""Get the event ID of the initial join that started the partial
join, and the device list stream ID at the point we started the partial
join.
"""
result = await self.db_pool.simple_select_one(
table="partial_state_rooms",
keyvalues={"room_id": room_id},
retcols=("join_event_id", "device_lists_stream_id"),
desc="get_join_event_id_for_partial_state",
)
return result["join_event_id"], result["device_lists_stream_id"]
def get_un_partial_stated_rooms_token(self, instance_name: str) -> int:
return self._un_partial_stated_rooms_stream_id_gen.get_current_token_for_writer(
instance_name
)
async def get_un_partial_stated_rooms_between(
self, last_id: int, current_id: int, room_ids: Collection[str]
) -> Set[str]:
"""Get all rooms that got un partial stated between `last_id` exclusive and
`current_id` inclusive.
Returns:
The list of room ids.
"""
if last_id == current_id:
return set()
def _get_un_partial_stated_rooms_between_txn(
txn: LoggingTransaction,
) -> Set[str]:
sql = """
SELECT DISTINCT room_id FROM un_partial_stated_room_stream
WHERE ? < stream_id AND stream_id <= ? AND
"""
clause, args = make_in_list_sql_clause(
self.database_engine, "room_id", room_ids
)
txn.execute(sql + clause, [last_id, current_id] + args)
return {r[0] for r in txn}
return await self.db_pool.runInteraction(
"get_un_partial_stated_rooms_between",
_get_un_partial_stated_rooms_between_txn,
)
async def get_un_partial_stated_rooms_from_stream(
self, instance_name: str, last_id: int, current_id: int, limit: int
) -> Tuple[List[Tuple[int, Tuple[str]]], int, bool]:
"""Get updates for un partial stated rooms replication stream.
Args:
instance_name: The writer we want to fetch updates from. Unused
here since there is only ever one writer.
last_id: The token to fetch updates from. Exclusive.
current_id: The token to fetch updates up to. Inclusive.
limit: The requested limit for the number of rows to return. The
function may return more or fewer rows.
Returns:
A tuple consisting of: the updates, a token to use to fetch
subsequent updates, and whether we returned fewer rows than exists
between the requested tokens due to the limit.
The token returned can be used in a subsequent call to this
function to get further updatees.
The updates are a list of 2-tuples of stream ID and the row data
"""
if last_id == current_id:
return [], current_id, False
def get_un_partial_stated_rooms_from_stream_txn(
txn: LoggingTransaction,
) -> Tuple[List[Tuple[int, Tuple[str]]], int, bool]:
sql = """
SELECT stream_id, room_id
FROM un_partial_stated_room_stream
WHERE ? < stream_id AND stream_id <= ? AND instance_name = ?
ORDER BY stream_id ASC
LIMIT ?
"""
txn.execute(sql, (last_id, current_id, instance_name, limit))
updates = [(row[0], (row[1],)) for row in txn]
limited = False
upto_token = current_id
if len(updates) >= limit:
upto_token = updates[-1][0]
limited = True
return updates, upto_token, limited
return await self.db_pool.runInteraction(
"get_un_partial_stated_rooms_from_stream",
get_un_partial_stated_rooms_from_stream_txn,
)
class _BackgroundUpdates:
REMOVE_TOMESTONED_ROOMS_BG_UPDATE = "remove_tombstoned_rooms_from_directory"
ADD_ROOMS_ROOM_VERSION_COLUMN = "add_rooms_room_version_column"
POPULATE_ROOM_DEPTH_MIN_DEPTH2 = "populate_room_depth_min_depth2"
REPLACE_ROOM_DEPTH_MIN_DEPTH = "replace_room_depth_min_depth"
POPULATE_ROOMS_CREATOR_COLUMN = "populate_rooms_creator_column"
ADD_ROOM_TYPE_COLUMN = "add_room_type_column"
_REPLACE_ROOM_DEPTH_SQL_COMMANDS = (
"DROP TRIGGER populate_min_depth2_trigger ON room_depth",
"DROP FUNCTION populate_min_depth2()",
"ALTER TABLE room_depth DROP COLUMN min_depth",
"ALTER TABLE room_depth RENAME COLUMN min_depth2 TO min_depth",
)
class RoomBackgroundUpdateStore(SQLBaseStore):
def __init__(
self,
database: DatabasePool,
db_conn: LoggingDatabaseConnection,
hs: "HomeServer",
):
super().__init__(database, db_conn, hs)
self.db_pool.updates.register_background_update_handler(
"insert_room_retention",
self._background_insert_retention,
)
self.db_pool.updates.register_background_update_handler(
_BackgroundUpdates.REMOVE_TOMESTONED_ROOMS_BG_UPDATE,
self._remove_tombstoned_rooms_from_directory,
)
self.db_pool.updates.register_background_update_handler(
_BackgroundUpdates.ADD_ROOMS_ROOM_VERSION_COLUMN,
self._background_add_rooms_room_version_column,
)
self.db_pool.updates.register_background_update_handler(
_BackgroundUpdates.ADD_ROOM_TYPE_COLUMN,
self._background_add_room_type_column,
)
# BG updates to change the type of room_depth.min_depth
self.db_pool.updates.register_background_update_handler(
_BackgroundUpdates.POPULATE_ROOM_DEPTH_MIN_DEPTH2,
self._background_populate_room_depth_min_depth2,
)
self.db_pool.updates.register_background_update_handler(
_BackgroundUpdates.REPLACE_ROOM_DEPTH_MIN_DEPTH,
self._background_replace_room_depth_min_depth,
)
self.db_pool.updates.register_background_update_handler(
_BackgroundUpdates.POPULATE_ROOMS_CREATOR_COLUMN,
self._background_populate_rooms_creator_column,
)
async def _background_insert_retention(
self, progress: JsonDict, batch_size: int
) -> int:
"""Retrieves a list of all rooms within a range and inserts an entry for each of
them into the room_retention table.
NULLs the property's columns if missing from the retention event in the room's
state (or NULLs all of them if there's no retention event in the room's state),
so that we fall back to the server's retention policy.
"""
last_room = progress.get("room_id", "")
def _background_insert_retention_txn(txn: LoggingTransaction) -> bool:
txn.execute(
"""
SELECT state.room_id, state.event_id, events.json
FROM current_state_events as state
LEFT JOIN event_json AS events ON (state.event_id = events.event_id)
WHERE state.room_id > ? AND state.type = '%s'
ORDER BY state.room_id ASC
LIMIT ?;
"""
% EventTypes.Retention,
(last_room, batch_size),
)
rows = self.db_pool.cursor_to_dict(txn)
if not rows:
return True
for row in rows:
if not row["json"]:
retention_policy = {}
else:
ev = db_to_json(row["json"])
retention_policy = ev["content"]
self.db_pool.simple_insert_txn(
txn=txn,
table="room_retention",
values={
"room_id": row["room_id"],
"event_id": row["event_id"],
"min_lifetime": retention_policy.get("min_lifetime"),
"max_lifetime": retention_policy.get("max_lifetime"),
},
)
logger.info("Inserted %d rows into room_retention", len(rows))
self.db_pool.updates._background_update_progress_txn(
txn, "insert_room_retention", {"room_id": rows[-1]["room_id"]}
)
if batch_size > len(rows):
return True
else:
return False
end = await self.db_pool.runInteraction(
"insert_room_retention",
_background_insert_retention_txn,
)
if end:
await self.db_pool.updates._end_background_update("insert_room_retention")
return batch_size
async def _background_add_rooms_room_version_column(
self, progress: JsonDict, batch_size: int
) -> int:
"""Background update to go and add room version information to `rooms`
table from `current_state_events` table.
"""
last_room_id = progress.get("room_id", "")
def _background_add_rooms_room_version_column_txn(
txn: LoggingTransaction,
) -> bool:
sql = """
SELECT room_id, json FROM current_state_events
INNER JOIN event_json USING (room_id, event_id)
WHERE room_id > ? AND type = 'm.room.create' AND state_key = ''
ORDER BY room_id
LIMIT ?
"""
txn.execute(sql, (last_room_id, batch_size))
updates = []
for room_id, event_json in txn:
event_dict = db_to_json(event_json)
room_version_id = event_dict.get("content", {}).get(
"room_version", RoomVersions.V1.identifier
)
creator = event_dict.get("content").get("creator")
updates.append((room_id, creator, room_version_id))
if not updates:
return True
new_last_room_id = ""
for room_id, creator, room_version_id in updates:
# We upsert here just in case we don't already have a row,
# mainly for paranoia as much badness would happen if we don't
# insert the row and then try and get the room version for the
# room.
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},
)
new_last_room_id = room_id
self.db_pool.updates._background_update_progress_txn(
txn,
_BackgroundUpdates.ADD_ROOMS_ROOM_VERSION_COLUMN,
{"room_id": new_last_room_id},
)
return False
end = await self.db_pool.runInteraction(
"_background_add_rooms_room_version_column",
_background_add_rooms_room_version_column_txn,
)
if end:
await self.db_pool.updates._end_background_update(
_BackgroundUpdates.ADD_ROOMS_ROOM_VERSION_COLUMN
)
return batch_size
async def _remove_tombstoned_rooms_from_directory(
self, progress: JsonDict, batch_size: int
) -> int:
"""Removes any rooms with tombstone events from the room directory
Nowadays this is handled by the room upgrade handler, but we may have some
that got left behind
"""
last_room = progress.get("room_id", "")
def _get_rooms(txn: LoggingTransaction) -> List[str]:
txn.execute(
"""
SELECT room_id
FROM rooms r
INNER JOIN current_state_events cse USING (room_id)
WHERE room_id > ? AND r.is_public
AND cse.type = '%s' AND cse.state_key = ''
ORDER BY room_id ASC
LIMIT ?;
"""
% EventTypes.Tombstone,
(last_room, batch_size),
)
return [row[0] for row in txn]
rooms = await self.db_pool.runInteraction(
"get_tombstoned_directory_rooms", _get_rooms
)
if not rooms:
await self.db_pool.updates._end_background_update(
_BackgroundUpdates.REMOVE_TOMESTONED_ROOMS_BG_UPDATE
)
return 0
for room_id in rooms:
logger.info("Removing tombstoned room %s from the directory", room_id)
await self.set_room_is_public(room_id, False)
await self.db_pool.updates._background_update_progress(
_BackgroundUpdates.REMOVE_TOMESTONED_ROOMS_BG_UPDATE, {"room_id": rooms[-1]}
)
return len(rooms)
@abstractmethod
def set_room_is_public(self, room_id: str, is_public: bool) -> Awaitable[None]:
# this will need to be implemented if a background update is performed with
# existing (tombstoned, public) rooms in the database.
#
# It's overridden by RoomStore for the synapse master.
raise NotImplementedError()
async def has_auth_chain_index(self, room_id: str) -> bool:
"""Check if the room has (or can have) a chain cover index.
Defaults to True if we don't have an entry in `rooms` table nor any
events for the room.
"""
has_auth_chain_index = await self.db_pool.simple_select_one_onecol(
table="rooms",
keyvalues={"room_id": room_id},
retcol="has_auth_chain_index",
desc="has_auth_chain_index",
allow_none=True,
)
if has_auth_chain_index:
return True
# It's possible that we already have events for the room in our DB
# without a corresponding room entry. If we do then we don't want to
# mark the room as having an auth chain cover index.
max_ordering = await self.db_pool.simple_select_one_onecol(
table="events",
keyvalues={"room_id": room_id},
retcol="MAX(stream_ordering)",
allow_none=True,
desc="has_auth_chain_index_fallback",
)
return max_ordering is None
async def _background_populate_room_depth_min_depth2(
self, progress: JsonDict, batch_size: int
) -> int:
"""Populate room_depth.min_depth2
This is to deal with the fact that min_depth was initially created as a
32-bit integer field.
"""
def process(txn: LoggingTransaction) -> int:
last_room = progress.get("last_room", "")
txn.execute(
"""
UPDATE room_depth SET min_depth2=min_depth
WHERE room_id IN (
SELECT room_id FROM room_depth WHERE room_id > ?
ORDER BY room_id LIMIT ?
)
RETURNING room_id;
""",
(last_room, batch_size),
)
row_count = txn.rowcount
if row_count == 0:
return 0
last_room = max(row[0] for row in txn)
logger.info("populated room_depth up to %s", last_room)
self.db_pool.updates._background_update_progress_txn(
txn,
_BackgroundUpdates.POPULATE_ROOM_DEPTH_MIN_DEPTH2,
{"last_room": last_room},
)
return row_count
result = await self.db_pool.runInteraction(
"_background_populate_min_depth2", process
)
if result != 0:
return result
await self.db_pool.updates._end_background_update(
_BackgroundUpdates.POPULATE_ROOM_DEPTH_MIN_DEPTH2
)
return 0
async def _background_replace_room_depth_min_depth(
self, progress: JsonDict, batch_size: int
) -> int:
"""Drop the old 'min_depth' column and rename 'min_depth2' into its place."""
def process(txn: Cursor) -> None:
for sql in _REPLACE_ROOM_DEPTH_SQL_COMMANDS:
logger.info("completing room_depth migration: %s", sql)
txn.execute(sql)
await self.db_pool.runInteraction("_background_replace_room_depth", process)
await self.db_pool.updates._end_background_update(
_BackgroundUpdates.REPLACE_ROOM_DEPTH_MIN_DEPTH,
)
return 0
async def _background_populate_rooms_creator_column(
self, progress: JsonDict, batch_size: int
) -> int:
"""Background update to go and add creator information to `rooms`
table from `current_state_events` table.
"""
last_room_id = progress.get("room_id", "")
def _background_populate_rooms_creator_column_txn(
txn: LoggingTransaction,
) -> bool:
sql = """
SELECT room_id, json FROM event_json
INNER JOIN rooms AS room USING (room_id)
INNER JOIN current_state_events AS state_event USING (room_id, event_id)
WHERE room_id > ? AND (room.creator IS NULL OR room.creator = '') AND state_event.type = 'm.room.create' AND state_event.state_key = ''
ORDER BY room_id
LIMIT ?
"""
txn.execute(sql, (last_room_id, batch_size))
room_id_to_create_event_results = txn.fetchall()
new_last_room_id = ""
for room_id, event_json in room_id_to_create_event_results:
event_dict = db_to_json(event_json)
creator = event_dict.get("content").get(EventContentFields.ROOM_CREATOR)
self.db_pool.simple_update_txn(
txn,
table="rooms",
keyvalues={"room_id": room_id},
updatevalues={"creator": creator},
)
new_last_room_id = room_id
if new_last_room_id == "":
return True
self.db_pool.updates._background_update_progress_txn(
txn,
_BackgroundUpdates.POPULATE_ROOMS_CREATOR_COLUMN,
{"room_id": new_last_room_id},
)
return False
end = await self.db_pool.runInteraction(
"_background_populate_rooms_creator_column",
_background_populate_rooms_creator_column_txn,
)
if end:
await self.db_pool.updates._end_background_update(
_BackgroundUpdates.POPULATE_ROOMS_CREATOR_COLUMN
)
return batch_size
async def _background_add_room_type_column(
self, progress: JsonDict, batch_size: int
) -> int:
"""Background update to go and add room_type information to `room_stats_state`
table from `event_json` table.
"""
last_room_id = progress.get("room_id", "")
def _background_add_room_type_column_txn(
txn: LoggingTransaction,
) -> bool:
sql = """
SELECT state.room_id, json FROM event_json
INNER JOIN current_state_events AS state USING (event_id)
WHERE state.room_id > ? AND type = 'm.room.create'
ORDER BY state.room_id
LIMIT ?
"""
txn.execute(sql, (last_room_id, batch_size))
room_id_to_create_event_results = txn.fetchall()
new_last_room_id = None
for room_id, event_json in room_id_to_create_event_results:
event_dict = db_to_json(event_json)
room_type = event_dict.get("content", {}).get(
EventContentFields.ROOM_TYPE, None
)
if isinstance(room_type, str):
self.db_pool.simple_update_txn(
txn,
table="room_stats_state",
keyvalues={"room_id": room_id},
updatevalues={"room_type": room_type},
)
new_last_room_id = room_id
if new_last_room_id is None:
return True
self.db_pool.updates._background_update_progress_txn(
txn,
_BackgroundUpdates.ADD_ROOM_TYPE_COLUMN,
{"room_id": new_last_room_id},
)
return False
end = await self.db_pool.runInteraction(
"_background_add_room_type_column",
_background_add_room_type_column_txn,
)
if end:
await self.db_pool.updates._end_background_update(
_BackgroundUpdates.ADD_ROOM_TYPE_COLUMN
)
return batch_size
class RoomStore(RoomBackgroundUpdateStore, RoomWorkerStore):
def __init__(
self,
database: DatabasePool,
db_conn: LoggingDatabaseConnection,
hs: "HomeServer",
):
super().__init__(database, db_conn, hs)
self._event_reports_id_gen = IdGenerator(db_conn, "event_reports", "id")
self._instance_name = hs.get_instance_name()
async def upsert_room_on_join(
self, room_id: str, room_version: RoomVersion, state_events: List[EventBase]
) -> None:
"""Ensure that the room is stored in the table
Called when we join a room over federation, and overwrites any room version
currently in the table.
"""
# It's possible that we already have events for the room in our DB
# without a corresponding room entry. If we do then we don't want to
# mark the room as having an auth chain cover index.
has_auth_chain_index = await self.has_auth_chain_index(room_id)
create_event = None
for e in state_events:
if (e.type, e.state_key) == (EventTypes.Create, ""):
create_event = e
break
if create_event is None:
# If the state doesn't have a create event then the room is
# invalid, and it would fail auth checks anyway.
raise StoreError(400, "No create event in state")
room_creator = create_event.content.get(EventContentFields.ROOM_CREATOR)
if not isinstance(room_creator, str):
# If the create event does not have a creator then the room is
# invalid, and it would fail auth checks anyway.
raise StoreError(400, "No creator defined on the create event")
await self.db_pool.simple_upsert(
desc="upsert_room_on_join",
table="rooms",
keyvalues={"room_id": room_id},
values={"room_version": room_version.identifier},
insertion_values={
"is_public": False,
"creator": room_creator,
"has_auth_chain_index": has_auth_chain_index,
},
)
async def store_partial_state_room(
self,
room_id: str,
servers: AbstractSet[str],
device_lists_stream_id: int,
joined_via: str,
) -> None:
"""Mark the given room as containing events with partial state.
We also store additional data that describes _when_ we first partial-joined this
room, which helps us to keep other homeservers in sync when we finally fully
join this room.
We do not include a `join_event_id` here---we need to wait for the join event
to be persisted first.
Args:
room_id: the ID of the room
servers: other servers known to be in the room. must include `joined_via`.
device_lists_stream_id: the device_lists stream ID at the time when we first
joined the room.
joined_via: the server name we requested a partial join from.
"""
assert joined_via in servers
await self.db_pool.runInteraction(
"store_partial_state_room",
self._store_partial_state_room_txn,
room_id,
servers,
device_lists_stream_id,
joined_via,
)
def _store_partial_state_room_txn(
self,
txn: LoggingTransaction,
room_id: str,
servers: AbstractSet[str],
device_lists_stream_id: int,
joined_via: str,
) -> None:
DatabasePool.simple_insert_txn(
txn,
table="partial_state_rooms",
values={
"room_id": room_id,
"device_lists_stream_id": device_lists_stream_id,
# To be updated later once the join event is persisted.
"join_event_id": None,
"joined_via": joined_via,
},
)
DatabasePool.simple_insert_many_txn(
txn,
table="partial_state_rooms_servers",
keys=("room_id", "server_name"),
values=((room_id, s) for s in servers),
)
self._invalidate_cache_and_stream(txn, self.is_partial_state_room, (room_id,))
self._invalidate_cache_and_stream(
txn, self._get_partial_state_servers_at_join, (room_id,)
)
async def write_partial_state_rooms_join_event_id(
self,
room_id: str,
join_event_id: str,
) -> None:
"""Record the join event which resulted from a partial join.
We do this separately to `store_partial_state_room` because we need to wait for
the join event to be persisted. Otherwise we violate a foreign key constraint.
"""
await self.db_pool.runInteraction(
"write_partial_state_rooms_join_event_id",
self._write_partial_state_rooms_join_event_id,
room_id,
join_event_id,
)
def _write_partial_state_rooms_join_event_id(
self,
txn: LoggingTransaction,
room_id: str,
join_event_id: str,
) -> None:
DatabasePool.simple_update_txn(
txn,
table="partial_state_rooms",
keyvalues={"room_id": room_id},
updatevalues={"join_event_id": join_event_id},
)
async def maybe_store_room_on_outlier_membership(
self, room_id: str, room_version: RoomVersion
) -> None:
"""
When we receive an invite or any other event over federation that may relate to a room
we are not in, store the version of the room if we don't already know the room version.
"""
# It's possible that we already have events for the room in our DB
# without a corresponding room entry. If we do then we don't want to
# mark the room as having an auth chain cover index.
has_auth_chain_index = await self.has_auth_chain_index(room_id)
await self.db_pool.simple_upsert(
desc="maybe_store_room_on_outlier_membership",
table="rooms",
keyvalues={"room_id": room_id},
values={},
insertion_values={
"room_version": room_version.identifier,
"is_public": False,
# We don't worry about setting the `creator` here because
# we don't process any messages in a room while a user is
# invited (only after the join).
"creator": "",
"has_auth_chain_index": has_auth_chain_index,
},
)
async def set_room_is_public(self, room_id: str, is_public: bool) -> None:
await self.db_pool.simple_update_one(
table="rooms",
keyvalues={"room_id": room_id},
updatevalues={"is_public": is_public},
desc="set_room_is_public",
)
self.hs.get_notifier().on_new_replication_data()
async def set_room_is_public_appservice(
self, room_id: str, appservice_id: str, network_id: str, is_public: bool
) -> None:
"""Edit the appservice/network specific public room list.
Each appservice can have a number of published room lists associated
with them, keyed off of an appservice defined `network_id`, which
basically represents a single instance of a bridge to a third party
network.
Args:
room_id
appservice_id
network_id
is_public: Whether to publish or unpublish the room from the list.
"""
if is_public:
await self.db_pool.simple_upsert(
table="appservice_room_list",
keyvalues={
"appservice_id": appservice_id,
"network_id": network_id,
"room_id": room_id,
},
values={},
insertion_values={
"appservice_id": appservice_id,
"network_id": network_id,
"room_id": room_id,
},
desc="set_room_is_public_appservice_true",
)
else:
await self.db_pool.simple_delete(
table="appservice_room_list",
keyvalues={
"appservice_id": appservice_id,
"network_id": network_id,
"room_id": room_id,
},
desc="set_room_is_public_appservice_false",
)
self.hs.get_notifier().on_new_replication_data()
async def add_event_report(
self,
room_id: str,
event_id: str,
user_id: str,
reason: Optional[str],
content: JsonDict,
received_ts: int,
) -> None:
next_id = self._event_reports_id_gen.get_next()
await self.db_pool.simple_insert(
table="event_reports",
values={
"id": next_id,
"received_ts": received_ts,
"room_id": room_id,
"event_id": event_id,
"user_id": user_id,
"reason": reason,
"content": json_encoder.encode(content),
},
desc="add_event_report",
)
async def get_event_report(self, report_id: int) -> Optional[Dict[str, Any]]:
"""Retrieve an event report
Args:
report_id: ID of reported event in database
Returns:
JSON dict of information from an event report or None if the
report does not exist.
"""
def _get_event_report_txn(
txn: LoggingTransaction, report_id: int
) -> Optional[Dict[str, Any]]:
sql = """
SELECT
er.id,
er.received_ts,
er.room_id,
er.event_id,
er.user_id,
er.content,
events.sender,
room_stats_state.canonical_alias,
room_stats_state.name,
event_json.json AS event_json
FROM event_reports AS er
LEFT JOIN events
ON events.event_id = er.event_id
JOIN event_json
ON event_json.event_id = er.event_id
JOIN room_stats_state
ON room_stats_state.room_id = er.room_id
WHERE er.id = ?
"""
txn.execute(sql, [report_id])
row = txn.fetchone()
if not row:
return None
event_report = {
"id": row[0],
"received_ts": row[1],
"room_id": row[2],
"event_id": row[3],
"user_id": row[4],
"score": db_to_json(row[5]).get("score"),
"reason": db_to_json(row[5]).get("reason"),
"sender": row[6],
"canonical_alias": row[7],
"name": row[8],
"event_json": db_to_json(row[9]),
}
return event_report
return await self.db_pool.runInteraction(
"get_event_report", _get_event_report_txn, report_id
)
async def get_event_reports_paginate(
self,
start: int,
limit: int,
direction: Direction = Direction.BACKWARDS,
user_id: Optional[str] = None,
room_id: Optional[str] = None,
) -> Tuple[List[Dict[str, Any]], int]:
"""Retrieve a paginated list of event reports
Args:
start: event offset to begin the query from
limit: number of rows to retrieve
direction: Whether to fetch the most recent first (backwards) or the
oldest first (forwards)
user_id: search for user_id. Ignored if user_id is None
room_id: search for room_id. Ignored if room_id is None
Returns:
Tuple of:
json list of event reports
total number of event reports matching the filter criteria
"""
def _get_event_reports_paginate_txn(
txn: LoggingTransaction,
) -> Tuple[List[Dict[str, Any]], int]:
filters = []
args: List[object] = []
if user_id:
filters.append("er.user_id LIKE ?")
args.extend(["%" + user_id + "%"])
if room_id:
filters.append("er.room_id LIKE ?")
args.extend(["%" + room_id + "%"])
if direction == Direction.BACKWARDS:
order = "DESC"
else:
order = "ASC"
where_clause = "WHERE " + " AND ".join(filters) if len(filters) > 0 else ""
# We join on room_stats_state despite not using any columns from it
# because the join can influence the number of rows returned;
# e.g. a room that doesn't have state, maybe because it was deleted.
# The query returning the total count should be consistent with
# the query returning the results.
sql = """
SELECT COUNT(*) as total_event_reports
FROM event_reports AS er
JOIN room_stats_state ON room_stats_state.room_id = er.room_id
{}
""".format(
where_clause
)
txn.execute(sql, args)
count = cast(Tuple[int], txn.fetchone())[0]
sql = """
SELECT
er.id,
er.received_ts,
er.room_id,
er.event_id,
er.user_id,
er.content,
events.sender,
room_stats_state.canonical_alias,
room_stats_state.name
FROM event_reports AS er
LEFT JOIN events
ON events.event_id = er.event_id
JOIN room_stats_state
ON room_stats_state.room_id = er.room_id
{where_clause}
ORDER BY er.received_ts {order}
LIMIT ?
OFFSET ?
""".format(
where_clause=where_clause,
order=order,
)
args += [limit, start]
txn.execute(sql, args)
event_reports = []
for row in txn:
try:
s = db_to_json(row[5]).get("score")
r = db_to_json(row[5]).get("reason")
except Exception:
logger.error("Unable to parse json from event_reports: %s", row[0])
continue
event_reports.append(
{
"id": row[0],
"received_ts": row[1],
"room_id": row[2],
"event_id": row[3],
"user_id": row[4],
"score": s,
"reason": r,
"sender": row[6],
"canonical_alias": row[7],
"name": row[8],
}
)
return event_reports, count
return await self.db_pool.runInteraction(
"get_event_reports_paginate", _get_event_reports_paginate_txn
)
async def block_room(self, room_id: str, user_id: str) -> None:
"""Marks the room as blocked.
Can be called multiple times (though we'll only track the last user to
block this room).
Can be called on a room unknown to this homeserver.
Args:
room_id: Room to block
user_id: Who blocked it
"""
await self.db_pool.simple_upsert(
table="blocked_rooms",
keyvalues={"room_id": room_id},
values={},
insertion_values={"user_id": user_id},
desc="block_room",
)
await self.db_pool.runInteraction(
"block_room_invalidation",
self._invalidate_cache_and_stream,
self.is_room_blocked,
(room_id,),
)
async def unblock_room(self, room_id: str) -> None:
"""Remove the room from blocking list.
Args:
room_id: Room to unblock
"""
await self.db_pool.simple_delete(
table="blocked_rooms",
keyvalues={"room_id": room_id},
desc="unblock_room",
)
await self.db_pool.runInteraction(
"block_room_invalidation",
self._invalidate_cache_and_stream,
self.is_room_blocked,
(room_id,),
)
async def clear_partial_state_room(self, room_id: str) -> Optional[int]:
"""Clears the partial state flag for a room.
Args:
room_id: The room whose partial state flag is to be cleared.
Returns:
The corresponding stream id for the un-partial-stated rooms stream.
`None` if the partial state flag could not be cleared because the room
still contains events with partial state.
"""
try:
async with self._un_partial_stated_rooms_stream_id_gen.get_next() as un_partial_state_room_stream_id:
await self.db_pool.runInteraction(
"clear_partial_state_room",
self._clear_partial_state_room_txn,
room_id,
un_partial_state_room_stream_id,
)
return un_partial_state_room_stream_id
except self.db_pool.engine.module.IntegrityError as e:
# Assume that any `IntegrityError`s are due to partial state events.
logger.info(
"Exception while clearing lazy partial-state-room %s, retrying: %s",
room_id,
e,
)
return None
def _clear_partial_state_room_txn(
self,
txn: LoggingTransaction,
room_id: str,
un_partial_state_room_stream_id: int,
) -> None:
DatabasePool.simple_delete_txn(
txn,
table="partial_state_rooms_servers",
keyvalues={"room_id": room_id},
)
DatabasePool.simple_delete_one_txn(
txn,
table="partial_state_rooms",
keyvalues={"room_id": room_id},
)
self._invalidate_cache_and_stream(txn, self.is_partial_state_room, (room_id,))
self._invalidate_cache_and_stream(
txn, self._get_partial_state_servers_at_join, (room_id,)
)
DatabasePool.simple_insert_txn(
txn,
"un_partial_stated_room_stream",
{
"stream_id": un_partial_state_room_stream_id,
"instance_name": self._instance_name,
"room_id": room_id,
},
)
# We now delete anything from `device_lists_remote_pending` with a
# stream ID less than the minimum
# `partial_state_rooms.device_lists_stream_id`, as we no longer need them.
device_lists_stream_id = DatabasePool.simple_select_one_onecol_txn(
txn,
table="partial_state_rooms",
keyvalues={},
retcol="MIN(device_lists_stream_id)",
allow_none=True,
)
if device_lists_stream_id is None:
# There are no rooms being currently partially joined, so we delete everything.
txn.execute("DELETE FROM device_lists_remote_pending")
else:
sql = """
DELETE FROM device_lists_remote_pending
WHERE stream_id <= ?
"""
txn.execute(sql, (device_lists_stream_id,))
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