OpenCloud
/
MatrixSynapse
mirror of https://github.com/matrix-org/synapse
1
0
Fork 0
Code Issues Releases Wiki Activity
MatrixSynapse/synapse/storage/data_stores/main/roommember.py

1146 lines
42 KiB
Python
Raw Blame History

# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from six import iteritems, itervalues
from canonicaljson import json
from twisted.internet import defer
from synapse.api.constants import EventTypes, Membership
from synapse.metrics import LaterGauge
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage._base import LoggingTransaction, make_in_list_sql_clause
from synapse.storage.background_updates import BackgroundUpdateStore
from synapse.storage.data_stores.main.events_worker import EventsWorkerStore
from synapse.storage.engines import Sqlite3Engine
from synapse.storage.roommember import (
GetRoomsForUserWithStreamOrdering,
MemberSummary,
ProfileInfo,
RoomsForUser,
)
from synapse.types import get_domain_from_id
from synapse.util.async_helpers import Linearizer
from synapse.util.caches import intern_string
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks, cachedList
from synapse.util.metrics import Measure
from synapse.util.stringutils import to_ascii
logger = logging.getLogger(__name__)
_MEMBERSHIP_PROFILE_UPDATE_NAME = "room_membership_profile_update"
_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME = "current_state_events_membership"
class RoomMemberWorkerStore(EventsWorkerStore):
def __init__(self, db_conn, hs):
super(RoomMemberWorkerStore, self).__init__(db_conn, hs)
# Is the current_state_events.membership up to date? Or is the
# background update still running?
self._current_state_events_membership_up_to_date = False
txn = LoggingTransaction(
db_conn.cursor(),
name="_check_safe_current_state_events_membership_updated",
database_engine=self.database_engine,
)
self._check_safe_current_state_events_membership_updated_txn(txn)
txn.close()
if self.hs.config.metrics_flags.known_servers:
self._known_servers_count = 1
self.hs.get_clock().looping_call(
run_as_background_process,
60 * 1000,
"_count_known_servers",
self._count_known_servers,
)
self.hs.get_clock().call_later(
1000,
run_as_background_process,
"_count_known_servers",
self._count_known_servers,
)
LaterGauge(
"synapse_federation_known_servers",
"",
[],
lambda: self._known_servers_count,
)
@defer.inlineCallbacks
def _count_known_servers(self):
"""
Count the servers that this server knows about.
The statistic is stored on the class for the
`synapse_federation_known_servers` LaterGauge to collect.
"""
def _transact(txn):
if isinstance(self.database_engine, Sqlite3Engine):
query = """
SELECT COUNT(DISTINCT substr(out.user_id, pos+1))
FROM (
SELECT rm.user_id as user_id, instr(rm.user_id, ':')
AS pos FROM room_memberships as rm
INNER JOIN current_state_events as c ON rm.event_id = c.event_id
WHERE c.type = 'm.room.member'
) as out
"""
else:
query = """
SELECT COUNT(DISTINCT split_part(state_key, ':', 2))
FROM current_state_events
WHERE type = 'm.room.member' AND membership = 'join';
"""
txn.execute(query)
return list(txn)[0][0]
count = yield self.runInteraction("get_known_servers", _transact)
# We always know about ourselves, even if we have nothing in
# room_memberships (for example, the server is new).
self._known_servers_count = max([count, 1])
return self._known_servers_count
def _check_safe_current_state_events_membership_updated_txn(self, txn):
"""Checks if it is safe to assume the new current_state_events
membership column is up to date
"""
pending_update = self._simple_select_one_txn(
txn,
table="background_updates",
keyvalues={"update_name": _CURRENT_STATE_MEMBERSHIP_UPDATE_NAME},
retcols=["update_name"],
allow_none=True,
)
self._current_state_events_membership_up_to_date = not pending_update
# If the update is still running, reschedule to run.
if pending_update:
self._clock.call_later(
15.0,
run_as_background_process,
"_check_safe_current_state_events_membership_updated",
self.runInteraction,
"_check_safe_current_state_events_membership_updated",
self._check_safe_current_state_events_membership_updated_txn,
)
@cachedInlineCallbacks(max_entries=100000, iterable=True, cache_context=True)
def get_hosts_in_room(self, room_id, cache_context):
"""Returns the set of all hosts currently in the room
"""
user_ids = yield self.get_users_in_room(
room_id, on_invalidate=cache_context.invalidate
)
hosts = frozenset(get_domain_from_id(user_id) for user_id in user_ids)
return hosts
@cached(max_entries=100000, iterable=True)
def get_users_in_room(self, room_id):
return self.runInteraction(
"get_users_in_room", self.get_users_in_room_txn, room_id
)
def get_users_in_room_txn(self, txn, room_id):
# If we can assume current_state_events.membership is up to date
# then we can avoid a join, which is a Very Good Thing given how
# frequently this function gets called.
if self._current_state_events_membership_up_to_date:
sql = """
SELECT state_key FROM current_state_events
WHERE type = 'm.room.member' AND room_id = ? AND membership = ?
"""
else:
sql = """
SELECT state_key FROM room_memberships as m
INNER JOIN current_state_events as c
ON m.event_id = c.event_id
AND m.room_id = c.room_id
AND m.user_id = c.state_key
WHERE c.type = 'm.room.member' AND c.room_id = ? AND m.membership = ?
"""
txn.execute(sql, (room_id, Membership.JOIN))
return [to_ascii(r[0]) for r in txn]
@cached(max_entries=100000)
def get_room_summary(self, room_id):
""" Get the details of a room roughly suitable for use by the room
summary extension to /sync. Useful when lazy loading room members.
Args:
room_id (str): The room ID to query
Returns:
Deferred[dict[str, MemberSummary]:
dict of membership states, pointing to a MemberSummary named tuple.
"""
def _get_room_summary_txn(txn):
# first get counts.
# We do this all in one transaction to keep the cache small.
# FIXME: get rid of this when we have room_stats
# If we can assume current_state_events.membership is up to date
# then we can avoid a join, which is a Very Good Thing given how
# frequently this function gets called.
if self._current_state_events_membership_up_to_date:
# Note, rejected events will have a null membership field, so
# we we manually filter them out.
sql = """
SELECT count(*), membership FROM current_state_events
WHERE type = 'm.room.member' AND room_id = ?
AND membership IS NOT NULL
GROUP BY membership
"""
else:
sql = """
SELECT count(*), m.membership FROM room_memberships as m
INNER JOIN current_state_events as c
ON m.event_id = c.event_id
AND m.room_id = c.room_id
AND m.user_id = c.state_key
WHERE c.type = 'm.room.member' AND c.room_id = ?
GROUP BY m.membership
"""
txn.execute(sql, (room_id,))
res = {}
for count, membership in txn:
summary = res.setdefault(to_ascii(membership), MemberSummary([], count))
# we order by membership and then fairly arbitrarily by event_id so
# heroes are consistent
if self._current_state_events_membership_up_to_date:
# Note, rejected events will have a null membership field, so
# we we manually filter them out.
sql = """
SELECT state_key, membership, event_id
FROM current_state_events
WHERE type = 'm.room.member' AND room_id = ?
AND membership IS NOT NULL
ORDER BY
CASE membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC,
event_id ASC
LIMIT ?
"""
else:
sql = """
SELECT c.state_key, m.membership, c.event_id
FROM room_memberships as m
INNER JOIN current_state_events as c USING (room_id, event_id)
WHERE c.type = 'm.room.member' AND c.room_id = ?
ORDER BY
CASE m.membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC,
c.event_id ASC
LIMIT ?
"""
# 6 is 5 (number of heroes) plus 1, in case one of them is the calling user.
txn.execute(sql, (room_id, Membership.JOIN, Membership.INVITE, 6))
for user_id, membership, event_id in txn:
summary = res[to_ascii(membership)]
# we will always have a summary for this membership type at this
# point given the summary currently contains the counts.
members = summary.members
members.append((to_ascii(user_id), to_ascii(event_id)))
return res
return self.runInteraction("get_room_summary", _get_room_summary_txn)
def _get_user_counts_in_room_txn(self, txn, room_id):
"""
Get the user count in a room by membership.
Args:
room_id (str)
membership (Membership)
Returns:
Deferred[int]
"""
sql = """
SELECT m.membership, count(*) FROM room_memberships as m
INNER JOIN current_state_events as c USING(event_id)
WHERE c.type = 'm.room.member' AND c.room_id = ?
GROUP BY m.membership
"""
txn.execute(sql, (room_id,))
return {row[0]: row[1] for row in txn}
@cached()
def get_invited_rooms_for_user(self, user_id):
""" Get all the rooms the user is invited to
Args:
user_id (str): The user ID.
Returns:
A deferred list of RoomsForUser.
"""
return self.get_rooms_for_user_where_membership_is(user_id, [Membership.INVITE])
@defer.inlineCallbacks
def get_invite_for_user_in_room(self, user_id, room_id):
"""Gets the invite for the given user and room
Args:
user_id (str)
room_id (str)
Returns:
Deferred: Resolves to either a RoomsForUser or None if no invite was
found.
"""
invites = yield self.get_invited_rooms_for_user(user_id)
for invite in invites:
if invite.room_id == room_id:
return invite
return None
@defer.inlineCallbacks
def get_rooms_for_user_where_membership_is(self, user_id, membership_list):
""" Get all the rooms for this user where the membership for this user
matches one in the membership list.
Filters out forgotten rooms.
Args:
user_id (str): The user ID.
membership_list (list): A list of synapse.api.constants.Membership
values which the user must be in.
Returns:
Deferred[list[RoomsForUser]]
"""
if not membership_list:
return defer.succeed(None)
rooms = yield self.runInteraction(
"get_rooms_for_user_where_membership_is",
self._get_rooms_for_user_where_membership_is_txn,
user_id,
membership_list,
)
# Now we filter out forgotten rooms
forgotten_rooms = yield self.get_forgotten_rooms_for_user(user_id)
return [room for room in rooms if room.room_id not in forgotten_rooms]
def _get_rooms_for_user_where_membership_is_txn(
self, txn, user_id, membership_list
):
do_invite = Membership.INVITE in membership_list
membership_list = [m for m in membership_list if m != Membership.INVITE]
results = []
if membership_list:
if self._current_state_events_membership_up_to_date:
clause, args = make_in_list_sql_clause(
self.database_engine, "c.membership", membership_list
)
sql = """
SELECT room_id, e.sender, c.membership, event_id, e.stream_ordering
FROM current_state_events AS c
INNER JOIN events AS e USING (room_id, event_id)
WHERE
c.type = 'm.room.member'
AND state_key = ?
AND %s
""" % (
clause,
)
else:
clause, args = make_in_list_sql_clause(
self.database_engine, "m.membership", membership_list
)
sql = """
SELECT room_id, e.sender, m.membership, event_id, e.stream_ordering
FROM current_state_events AS c
INNER JOIN room_memberships AS m USING (room_id, event_id)
INNER JOIN events AS e USING (room_id, event_id)
WHERE
c.type = 'm.room.member'
AND state_key = ?
AND %s
""" % (
clause,
)
txn.execute(sql, (user_id, *args))
results = [RoomsForUser(**r) for r in self.cursor_to_dict(txn)]
if do_invite:
sql = (
"SELECT i.room_id, inviter, i.event_id, e.stream_ordering"
" FROM local_invites as i"
" INNER JOIN events as e USING (event_id)"
" WHERE invitee = ? AND locally_rejected is NULL"
" AND replaced_by is NULL"
)
txn.execute(sql, (user_id,))
results.extend(
RoomsForUser(
room_id=r["room_id"],
sender=r["inviter"],
event_id=r["event_id"],
stream_ordering=r["stream_ordering"],
membership=Membership.INVITE,
)
for r in self.cursor_to_dict(txn)
)
return results
@cachedInlineCallbacks(max_entries=500000, iterable=True)
def get_rooms_for_user_with_stream_ordering(self, user_id):
"""Returns a set of room_ids the user is currently joined to
Args:
user_id (str)
Returns:
Deferred[frozenset[GetRoomsForUserWithStreamOrdering]]: Returns
the rooms the user is in currently, along with the stream ordering
of the most recent join for that user and room.
"""
rooms = yield self.get_rooms_for_user_where_membership_is(
user_id, membership_list=[Membership.JOIN]
)
return frozenset(
GetRoomsForUserWithStreamOrdering(r.room_id, r.stream_ordering)
for r in rooms
)
@defer.inlineCallbacks
def get_rooms_for_user(self, user_id, on_invalidate=None):
"""Returns a set of room_ids the user is currently joined to
"""
rooms = yield self.get_rooms_for_user_with_stream_ordering(
user_id, on_invalidate=on_invalidate
)
return frozenset(r.room_id for r in rooms)
@cachedInlineCallbacks(max_entries=500000, cache_context=True, iterable=True)
def get_users_who_share_room_with_user(self, user_id, cache_context):
"""Returns the set of users who share a room with `user_id`
"""
room_ids = yield self.get_rooms_for_user(
user_id, on_invalidate=cache_context.invalidate
)
user_who_share_room = set()
for room_id in room_ids:
user_ids = yield self.get_users_in_room(
room_id, on_invalidate=cache_context.invalidate
)
user_who_share_room.update(user_ids)
return user_who_share_room
@defer.inlineCallbacks
def get_joined_users_from_context(self, event, context):
state_group = context.state_group
if not state_group:
# If state_group is None it means it has yet to be assigned a
# state group, i.e. we need to make sure that calls with a state_group
# of None don't hit previous cached calls with a None state_group.
# To do this we set the state_group to a new object as object() != object()
state_group = object()
current_state_ids = yield context.get_current_state_ids(self)
result = yield self._get_joined_users_from_context(
event.room_id, state_group, current_state_ids, event=event, context=context
)
return result
@defer.inlineCallbacks
def get_joined_users_from_state(self, room_id, state_entry):
state_group = state_entry.state_group
if not state_group:
# If state_group is None it means it has yet to be assigned a
# state group, i.e. we need to make sure that calls with a state_group
# of None don't hit previous cached calls with a None state_group.
# To do this we set the state_group to a new object as object() != object()
state_group = object()
with Measure(self._clock, "get_joined_users_from_state"):
return (
yield self._get_joined_users_from_context(
room_id, state_group, state_entry.state, context=state_entry
)
)
@cachedInlineCallbacks(
num_args=2, cache_context=True, iterable=True, max_entries=100000
)
def _get_joined_users_from_context(
self,
room_id,
state_group,
current_state_ids,
cache_context,
event=None,
context=None,
):
# We don't use `state_group`, it's there so that we can cache based
# on it. However, it's important that it's never None, since two current_states
# with a state_group of None are likely to be different.
# See bulk_get_push_rules_for_room for how we work around this.
assert state_group is not None
users_in_room = {}
member_event_ids = [
e_id
for key, e_id in iteritems(current_state_ids)
if key[0] == EventTypes.Member
]
if context is not None:
# If we have a context with a delta from a previous state group,
# check if we also have the result from the previous group in cache.
# If we do then we can reuse that result and simply update it with
# any membership changes in `delta_ids`
if context.prev_group and context.delta_ids:
prev_res = self._get_joined_users_from_context.cache.get(
(room_id, context.prev_group), None
)
if prev_res and isinstance(prev_res, dict):
users_in_room = dict(prev_res)
member_event_ids = [
e_id
for key, e_id in iteritems(context.delta_ids)
if key[0] == EventTypes.Member
]
for etype, state_key in context.delta_ids:
users_in_room.pop(state_key, None)
# We check if we have any of the member event ids in the event cache
# before we ask the DB
# We don't update the event cache hit ratio as it completely throws off
# the hit ratio counts. After all, we don't populate the cache if we
# miss it here
event_map = self._get_events_from_cache(
member_event_ids, allow_rejected=False, update_metrics=False
)
missing_member_event_ids = []
for event_id in member_event_ids:
ev_entry = event_map.get(event_id)
if ev_entry:
if ev_entry.event.membership == Membership.JOIN:
users_in_room[to_ascii(ev_entry.event.state_key)] = ProfileInfo(
display_name=to_ascii(
ev_entry.event.content.get("displayname", None)
),
avatar_url=to_ascii(
ev_entry.event.content.get("avatar_url", None)
),
)
else:
missing_member_event_ids.append(event_id)
if missing_member_event_ids:
event_to_memberships = yield self._get_joined_profiles_from_event_ids(
missing_member_event_ids
)
users_in_room.update((row for row in event_to_memberships.values() if row))
if event is not None and event.type == EventTypes.Member:
if event.membership == Membership.JOIN:
if event.event_id in member_event_ids:
users_in_room[to_ascii(event.state_key)] = ProfileInfo(
display_name=to_ascii(event.content.get("displayname", None)),
avatar_url=to_ascii(event.content.get("avatar_url", None)),
)
return users_in_room
@cached(max_entries=10000)
def _get_joined_profile_from_event_id(self, event_id):
raise NotImplementedError()
@cachedList(
cached_method_name="_get_joined_profile_from_event_id",
list_name="event_ids",
inlineCallbacks=True,
)
def _get_joined_profiles_from_event_ids(self, event_ids):
"""For given set of member event_ids check if they point to a join
event and if so return the associated user and profile info.
Args:
event_ids (Iterable[str]): The member event IDs to lookup
Returns:
Deferred[dict[str, Tuple[str, ProfileInfo]|None]]: Map from event ID
to `user_id` and ProfileInfo (or None if not join event).
"""
rows = yield self._simple_select_many_batch(
table="room_memberships",
column="event_id",
iterable=event_ids,
retcols=("user_id", "display_name", "avatar_url", "event_id"),
keyvalues={"membership": Membership.JOIN},
batch_size=500,
desc="_get_membership_from_event_ids",
)
return {
row["event_id"]: (
row["user_id"],
ProfileInfo(
avatar_url=row["avatar_url"], display_name=row["display_name"]
),
)
for row in rows
}
@cachedInlineCallbacks(max_entries=10000)
def is_host_joined(self, room_id, host):
if "%" in host or "_" in host:
raise Exception("Invalid host name")
sql = """
SELECT state_key FROM current_state_events AS c
INNER JOIN room_memberships AS m USING (event_id)
WHERE m.membership = 'join'
AND type = 'm.room.member'
AND c.room_id = ?
AND state_key LIKE ?
LIMIT 1
"""
# We do need to be careful to ensure that host doesn't have any wild cards
# in it, but we checked above for known ones and we'll check below that
# the returned user actually has the correct domain.
like_clause = "%:" + host
rows = yield self._execute("is_host_joined", None, sql, room_id, like_clause)
if not rows:
return False
user_id = rows[0][0]
if get_domain_from_id(user_id) != host:
# This can only happen if the host name has something funky in it
raise Exception("Invalid host name")
return True
@cachedInlineCallbacks()
def was_host_joined(self, room_id, host):
"""Check whether the server is or ever was in the room.
Args:
room_id (str)
host (str)
Returns:
Deferred: Resolves to True if the host is/was in the room, otherwise
False.
"""
if "%" in host or "_" in host:
raise Exception("Invalid host name")
sql = """
SELECT user_id FROM room_memberships
WHERE room_id = ?
AND user_id LIKE ?
AND membership = 'join'
LIMIT 1
"""
# We do need to be careful to ensure that host doesn't have any wild cards
# in it, but we checked above for known ones and we'll check below that
# the returned user actually has the correct domain.
like_clause = "%:" + host
rows = yield self._execute("was_host_joined", None, sql, room_id, like_clause)
if not rows:
return False
user_id = rows[0][0]
if get_domain_from_id(user_id) != host:
# This can only happen if the host name has something funky in it
raise Exception("Invalid host name")
return True
@defer.inlineCallbacks
def get_joined_hosts(self, room_id, state_entry):
state_group = state_entry.state_group
if not state_group:
# If state_group is None it means it has yet to be assigned a
# state group, i.e. we need to make sure that calls with a state_group
# of None don't hit previous cached calls with a None state_group.
# To do this we set the state_group to a new object as object() != object()
state_group = object()
with Measure(self._clock, "get_joined_hosts"):
return (
yield self._get_joined_hosts(
room_id, state_group, state_entry.state, state_entry=state_entry
)
)
@cachedInlineCallbacks(num_args=2, max_entries=10000, iterable=True)
# @defer.inlineCallbacks
def _get_joined_hosts(self, room_id, state_group, current_state_ids, state_entry):
# We don't use `state_group`, its there so that we can cache based
# on it. However, its important that its never None, since two current_state's
# with a state_group of None are likely to be different.
# See bulk_get_push_rules_for_room for how we work around this.
assert state_group is not None
cache = self._get_joined_hosts_cache(room_id)
joined_hosts = yield cache.get_destinations(state_entry)
return joined_hosts
@cached(max_entries=10000)
def _get_joined_hosts_cache(self, room_id):
return _JoinedHostsCache(self, room_id)
@cachedInlineCallbacks(num_args=2)
def did_forget(self, user_id, room_id):
"""Returns whether user_id has elected to discard history for room_id.
Returns False if they have since re-joined."""
def f(txn):
sql = (
"SELECT"
" COUNT(*)"
" FROM"
" room_memberships"
" WHERE"
" user_id = ?"
" AND"
" room_id = ?"
" AND"
" forgotten = 0"
)
txn.execute(sql, (user_id, room_id))
rows = txn.fetchall()
return rows[0][0]
count = yield self.runInteraction("did_forget_membership", f)
return count == 0
@cached()
def get_forgotten_rooms_for_user(self, user_id):
"""Gets all rooms the user has forgotten.
Args:
user_id (str)
Returns:
Deferred[set[str]]
"""
def _get_forgotten_rooms_for_user_txn(txn):
# This is a slightly convoluted query that first looks up all rooms
# that the user has forgotten in the past, then rechecks that list
# to see if any have subsequently been updated. This is done so that
# we can use a partial index on `forgotten = 1` on the assumption
# that few users will actually forget many rooms.
#
# Note that a room is considered "forgotten" if *all* membership
# events for that user and room have the forgotten field set (as
# when a user forgets a room we update all rows for that user and
# room, not just the current one).
sql = """
SELECT room_id, (
SELECT count(*) FROM room_memberships
WHERE room_id = m.room_id AND user_id = m.user_id AND forgotten = 0
) AS count
FROM room_memberships AS m
WHERE user_id = ? AND forgotten = 1
GROUP BY room_id, user_id;
"""
txn.execute(sql, (user_id,))
return set(row[0] for row in txn if row[1] == 0)
return self.runInteraction(
"get_forgotten_rooms_for_user", _get_forgotten_rooms_for_user_txn
)
@defer.inlineCallbacks
def get_rooms_user_has_been_in(self, user_id):
"""Get all rooms that the user has ever been in.
Args:
user_id (str)
Returns:
Deferred[set[str]]: Set of room IDs.
"""
room_ids = yield self._simple_select_onecol(
table="room_memberships",
keyvalues={"membership": Membership.JOIN, "user_id": user_id},
retcol="room_id",
desc="get_rooms_user_has_been_in",
)
return set(room_ids)
class RoomMemberBackgroundUpdateStore(BackgroundUpdateStore):
def __init__(self, db_conn, hs):
super(RoomMemberBackgroundUpdateStore, self).__init__(db_conn, hs)
self.register_background_update_handler(
_MEMBERSHIP_PROFILE_UPDATE_NAME, self._background_add_membership_profile
)
self.register_background_update_handler(
_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME,
self._background_current_state_membership,
)
self.register_background_index_update(
"room_membership_forgotten_idx",
index_name="room_memberships_user_room_forgotten",
table="room_memberships",
columns=["user_id", "room_id"],
where_clause="forgotten = 1",
)
@defer.inlineCallbacks
def _background_add_membership_profile(self, progress, batch_size):
target_min_stream_id = progress.get(
"target_min_stream_id_inclusive", self._min_stream_order_on_start
)
max_stream_id = progress.get(
"max_stream_id_exclusive", self._stream_order_on_start + 1
)
INSERT_CLUMP_SIZE = 1000
def add_membership_profile_txn(txn):
sql = """
SELECT stream_ordering, event_id, events.room_id, event_json.json
FROM events
INNER JOIN event_json USING (event_id)
INNER JOIN room_memberships USING (event_id)
WHERE ? <= stream_ordering AND stream_ordering < ?
AND type = 'm.room.member'
ORDER BY stream_ordering DESC
LIMIT ?
"""
txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
rows = self.cursor_to_dict(txn)
if not rows:
return 0
min_stream_id = rows[-1]["stream_ordering"]
to_update = []
for row in rows:
event_id = row["event_id"]
room_id = row["room_id"]
try:
event_json = json.loads(row["json"])
content = event_json["content"]
except Exception:
continue
display_name = content.get("displayname", None)
avatar_url = content.get("avatar_url", None)
if display_name or avatar_url:
to_update.append((display_name, avatar_url, event_id, room_id))
to_update_sql = """
UPDATE room_memberships SET display_name = ?, avatar_url = ?
WHERE event_id = ? AND room_id = ?
"""
for index in range(0, len(to_update), INSERT_CLUMP_SIZE):
clump = to_update[index : index + INSERT_CLUMP_SIZE]
txn.executemany(to_update_sql, clump)
progress = {
"target_min_stream_id_inclusive": target_min_stream_id,
"max_stream_id_exclusive": min_stream_id,
}
self._background_update_progress_txn(
txn, _MEMBERSHIP_PROFILE_UPDATE_NAME, progress
)
return len(rows)
result = yield self.runInteraction(
_MEMBERSHIP_PROFILE_UPDATE_NAME, add_membership_profile_txn
)
if not result:
yield self._end_background_update(_MEMBERSHIP_PROFILE_UPDATE_NAME)
return result
@defer.inlineCallbacks
def _background_current_state_membership(self, progress, batch_size):
"""Update the new membership column on current_state_events.
This works by iterating over all rooms in alphebetical order.
"""
def _background_current_state_membership_txn(txn, last_processed_room):
processed = 0
while processed < batch_size:
txn.execute(
"""
SELECT MIN(room_id) FROM current_state_events WHERE room_id > ?
""",
(last_processed_room,),
)
row = txn.fetchone()
if not row or not row[0]:
return processed, True
next_room, = row
sql = """
UPDATE current_state_events
SET membership = (
SELECT membership FROM room_memberships
WHERE event_id = current_state_events.event_id
)
WHERE room_id = ?
"""
txn.execute(sql, (next_room,))
processed += txn.rowcount
last_processed_room = next_room
self._background_update_progress_txn(
txn,
_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME,
{"last_processed_room": last_processed_room},
)
return processed, False
# If we haven't got a last processed room then just use the empty
# string, which will compare before all room IDs correctly.
last_processed_room = progress.get("last_processed_room", "")
row_count, finished = yield self.runInteraction(
"_background_current_state_membership_update",
_background_current_state_membership_txn,
last_processed_room,
)
if finished:
yield self._end_background_update(_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME)
return row_count
class RoomMemberStore(RoomMemberWorkerStore, RoomMemberBackgroundUpdateStore):
def __init__(self, db_conn, hs):
super(RoomMemberStore, self).__init__(db_conn, hs)
def _store_room_members_txn(self, txn, events, backfilled):
"""Store a room member in the database.
"""
self._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": event.content.get("displayname", None),
"avatar_url": event.content.get("avatar_url", None),
}
for event in events
],
)
for event in events:
txn.call_after(
self._membership_stream_cache.entity_has_changed,
event.state_key,
event.internal_metadata.stream_ordering,
)
txn.call_after(
self.get_invited_rooms_for_user.invalidate, (event.state_key,)
)
# We update the local_invites table only if the event is "current",
# i.e., its something that has just happened. If the event is an
# outlier it is only current if its an "out of band membership",
# like a remote invite or a rejection of a remote invite.
is_new_state = not backfilled and (
not event.internal_metadata.is_outlier()
or event.internal_metadata.is_out_of_band_membership()
)
is_mine = self.hs.is_mine_id(event.state_key)
if is_new_state and is_mine:
if event.membership == Membership.INVITE:
self._simple_insert_txn(
txn,
table="local_invites",
values={
"event_id": event.event_id,
"invitee": event.state_key,
"inviter": event.sender,
"room_id": event.room_id,
"stream_id": event.internal_metadata.stream_ordering,
},
)
else:
sql = (
"UPDATE local_invites SET stream_id = ?, replaced_by = ? WHERE"
" room_id = ? AND invitee = ? AND locally_rejected is NULL"
" AND replaced_by is NULL"
)
txn.execute(
sql,
(
event.internal_metadata.stream_ordering,
event.event_id,
event.room_id,
event.state_key,
),
)
@defer.inlineCallbacks
def locally_reject_invite(self, user_id, room_id):
sql = (
"UPDATE local_invites SET stream_id = ?, locally_rejected = ? WHERE"
" room_id = ? AND invitee = ? AND locally_rejected is NULL"
" AND replaced_by is NULL"
)
def f(txn, stream_ordering):
txn.execute(sql, (stream_ordering, True, room_id, user_id))
with self._stream_id_gen.get_next() as stream_ordering:
yield self.runInteraction("locally_reject_invite", f, stream_ordering)
def forget(self, user_id, room_id):
"""Indicate that user_id wishes to discard history for room_id."""
def f(txn):
sql = (
"UPDATE"
" room_memberships"
" SET"
" forgotten = 1"
" WHERE"
" user_id = ?"
" AND"
" room_id = ?"
)
txn.execute(sql, (user_id, room_id))
self._invalidate_cache_and_stream(txn, self.did_forget, (user_id, room_id))
self._invalidate_cache_and_stream(
txn, self.get_forgotten_rooms_for_user, (user_id,)
)
return self.runInteraction("forget_membership", f)
class _JoinedHostsCache(object):
"""Cache for joined hosts in a room that is optimised to handle updates
via state deltas.
"""
def __init__(self, store, room_id):
self.store = store
self.room_id = room_id
self.hosts_to_joined_users = {}
self.state_group = object()
self.linearizer = Linearizer("_JoinedHostsCache")
self._len = 0
@defer.inlineCallbacks
def get_destinations(self, state_entry):
"""Get set of destinations for a state entry
Args:
state_entry(synapse.state._StateCacheEntry)
"""
if state_entry.state_group == self.state_group:
return frozenset(self.hosts_to_joined_users)
with (yield self.linearizer.queue(())):
if state_entry.state_group == self.state_group:
pass
elif state_entry.prev_group == self.state_group:
for (typ, state_key), event_id in iteritems(state_entry.delta_ids):
if typ != EventTypes.Member:
continue
host = intern_string(get_domain_from_id(state_key))
user_id = state_key
known_joins = self.hosts_to_joined_users.setdefault(host, set())
event = yield self.store.get_event(event_id)
if event.membership == Membership.JOIN:
known_joins.add(user_id)
else:
known_joins.discard(user_id)
if not known_joins:
self.hosts_to_joined_users.pop(host, None)
else:
joined_users = yield self.store.get_joined_users_from_state(
self.room_id, state_entry
)
self.hosts_to_joined_users = {}
for user_id in joined_users:
host = intern_string(get_domain_from_id(user_id))
self.hosts_to_joined_users.setdefault(host, set()).add(user_id)
if state_entry.state_group:
self.state_group = state_entry.state_group
else:
self.state_group = object()
self._len = sum(len(v) for v in itervalues(self.hosts_to_joined_users))
return frozenset(self.hosts_to_joined_users)
def __len__(self):
return self._len
Reference in New Issue View Git Blame Copy Permalink