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# -*- coding: utf-8 -*-
# Copyright 2014 OpenMarket 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.
from twisted.internet import defer
from ._base import SQLBaseStore
from synapse.api.constants import Membership
import logging
logger = logging.getLogger(__name__)
class RoomMemberStore(SQLBaseStore):
def _store_room_member_txn(self, txn, event):
"""Store a room member in the database.
"""
try:
target_user_id = event.state_key
domain = self.hs.parse_userid(target_user_id).domain
except:
logger.exception(
"Failed to parse target_user_id=%s", target_user_id
)
raise
logger.debug(
"_store_room_member_txn: target_user_id=%s, membership=%s",
target_user_id,
event.membership,
)
self._simple_insert_txn(
txn,
"room_memberships",
{
"event_id": event.event_id,
"user_id": target_user_id,
"sender": event.user_id,
"room_id": event.room_id,
"membership": event.membership,
}
)
# Update room hosts table
if event.membership == Membership.JOIN:
sql = (
"INSERT OR IGNORE INTO room_hosts (room_id, host) "
"VALUES (?, ?)"
)
txn.execute(sql, (event.room_id, domain))
elif event.membership != Membership.INVITE:
# Check if this was the last person to have left.
member_events = self._get_members_query_txn(
txn,
where_clause=("c.room_id = ? AND m.membership = ?"
" AND m.user_id != ?"),
where_values=(event.room_id, Membership.JOIN, target_user_id,)
)
joined_domains = set()
for e in member_events:
try:
joined_domains.add(
self.hs.parse_userid(e.state_key).domain
)
except:
# FIXME: How do we deal with invalid user ids in the db?
logger.exception("Invalid user_id: %s", event.state_key)
if domain not in joined_domains:
sql = (
"DELETE FROM room_hosts WHERE room_id = ? AND host = ?"
)
txn.execute(sql, (event.room_id, domain))
@defer.inlineCallbacks
def get_room_member(self, user_id, room_id):
"""Retrieve the current state of a room member.
Args:
user_id (str): The member's user ID.
room_id (str): The room the member is in.
Returns:
Deferred: Results in a MembershipEvent or None.
"""
rows = yield self._get_members_by_dict({
"e.room_id": room_id,
"m.user_id": user_id,
})
defer.returnValue(rows[0] if rows else None)
def _get_room_member(self, txn, user_id, room_id):
sql = (
"SELECT e.* FROM events as e"
" INNER JOIN room_memberships as m"
" ON e.event_id = m.event_id"
" INNER JOIN current_state_events as c"
" ON m.event_id = c.event_id"
" WHERE m.user_id = ? and e.room_id = ?"
" LIMIT 1"
)
txn.execute(sql, (user_id, room_id))
rows = self.cursor_to_dict(txn)
if rows:
return self._parse_events_txn(txn, rows)[0]
else:
return None
def get_room_members(self, room_id, membership=None):
"""Retrieve the current room member list for a room.
Args:
room_id (str): The room to get the list of members.
membership (synapse.api.constants.Membership): The filter to apply
to this list, or None to return all members with some state
associated with this room.
Returns:
list of namedtuples representing the members in this room.
"""
where = {"m.room_id": room_id}
if membership:
where["m.membership"] = membership
return self._get_members_by_dict(where)
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.
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:
A list of RoomMemberEvent objects
"""
if not membership_list:
return defer.succeed(None)
args = [user_id]
args.extend(membership_list)
where_clause = "user_id = ? AND (%s)" % (
" OR ".join(["membership = ?" for _ in membership_list]),
)
return self._get_members_query(where_clause, args)
def get_joined_hosts_for_room(self, room_id):
return self._simple_select_onecol(
"room_hosts",
{"room_id": room_id},
"host"
)
def _get_members_by_dict(self, where_dict):
clause = " AND ".join("%s = ?" % k for k in where_dict.keys())
vals = where_dict.values()
return self._get_members_query(clause, vals)
def _get_members_query(self, where_clause, where_values):
return self.runInteraction(
"get_members_query", self._get_members_query_txn,
where_clause, where_values
)
def _get_members_query_txn(self, txn, where_clause, where_values):
sql = (
"SELECT e.* FROM events as e "
"INNER JOIN room_memberships as m "
"ON e.event_id = m.event_id "
"INNER JOIN current_state_events as c "
"ON m.event_id = c.event_id "
"WHERE %(where)s "
) % {
"where": where_clause,
}
txn.execute(sql, where_values)
rows = self.cursor_to_dict(txn)
results = self._parse_events_txn(txn, rows)
return results
@defer.inlineCallbacks
def user_rooms_intersect(self, user_id_list):
""" Checks whether all the users whose IDs are given in a list share a
room.
"""
user_list_clause = " OR ".join(["m.user_id = ?"] * len(user_id_list))
sql = (
"SELECT m.room_id FROM room_memberships as m "
"INNER JOIN current_state_events as c "
"ON m.event_id = c.event_id "
"WHERE m.membership = 'join' "
"AND (%(clause)s) "
# TODO(paul): We've got duplicate rows in the database somewhere
# so we have to DISTINCT m.user_id here
"GROUP BY m.room_id HAVING COUNT(DISTINCT m.user_id) = ?"
) % {"clause": user_list_clause}
args = list(user_id_list)
args.append(len(user_id_list))
rows = yield self._execute(None, sql, *args)
defer.returnValue(len(rows) > 0)
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